Installation and Service Manual - Maritime Geothermal...Outdoor Circulator Wiring The outdoor loop circulator provides flow between the heat pump and the ground loop. In most multiple-unit

ISSUE 03 10-Jan-2018 Page 1 002097MAN-01

Maritime Geothermal Ltd. P.O. Box 2555, 170 Plantation Road Petitcodiac, NB E4Z 6H4 (506) 756-8135

Commercial W-Series & WH-Series Water to Water Heat Pumps

Dual Refrigeration Circuit

Model Sizes 150-900 (12 to 70 ton)

[email protected] www.nordicghp.com

002097MAN-01 (ISSUE 03)

10-Jan-2018

Installation and Service Manual

Page 2 002097MAN-01 ISSUE 03 10-Jan-2018

W - 400 - H - P - 2D - PP - xx

Series: W = liquid to water (hydronic) WH = high temperature liquid to water

Nominal Size: 150 = 12 ton 185 = 17 ton 240 = 20 ton 300 = 23 ton 400 = 30 ton 500 = 40 ton 600 = 50 ton 800 = 65 ton 900 = 70 ton

Functions: H = Heating AC = Active Cooling (reversing) W = desuperheater for DHW

Refrigerant: P = R410a (W series) B = R134a (WH series)

Voltage Code: 1 = 208/230-1-60 2 = 208-3-60 4 = 460-3-60 5 = 575-3-60 6 = 220-1-50 7 = 380-3-50

Indoor Loop Exchanger: P = brazed plate

Revision: 01, 02 etc.

Compressor: D = dual scroll

Outdoor Loop Exchanger: P = brazed plate

WARNING: Ensure all access panels are in place and properly secured before applying power to the unit. Failure to do so may cause electrical shock. WARNING: Before performing service or maintenance on the heat pump system, ensure all power sources are DISCONNECTED. Electrical shock can cause serious personal injury or death. WARNING: Heat pump systems contain refrigerant under high pressure and as such can be hazardous to work on. Only qualified service personnel should install, repair, or service the heat pump. CAUTION: Safety glasses and work gloves should be worn at all times whenever a heat pump is serviced. A fire extinguisher and proper ventilation should be present whenever brazing is performed.

CAUTION: Venting refrigerant to atmosphere is illegal. A proper refrigerant recovery system must be employed whenever repairs require removal of refrigerant from the heat pump.

SAFETY PRECAUTIONS

Model Nomenclature


Only the models shown in these tables are available.

Maritime Geothermal Ltd. has a continuous improvement policy and reserves the right to modify specification data at any time without prior notice .

W-SERIES APPLICATION TABLE

MODEL FUNCTION REFRIGERANT VOLTAGE COMPR. OUTDOOR COIL INDOOR COIL REVISIONS

W-150 H HAC P

1 2 4 5 6 7

D P P 01

W-185 H HAC P

2 4 5 7

D P P 01

W-240 H HAC P

2 4 5 7

D P P 01

W-300 H HAC P

2 4 5 7

D P P 01

W-400 H HAC P

2 4 5 7

D P P 01

W-500 H HAC P

4 5 7

D P P 01

W-600 H HAC P

4 5 7

D P P 01

W-800 H HAC P

4 5 7

D P P 01

W-900 H P 4 5 7

D P P 01

WH-SERIES APPLICATION TABLE

MODEL FUNCTION REFRIGERANT VOLTAGE COMPR. OUTDOOR COIL INDOOR COIL REVISIONS

WH-150 H HAC B

1 2 4 5 6 7

D P P 01

WH-185 H HAC B

2 4 5 7

D P P 01

WH-240 H HAC B

2 4 5 7

D P P 01

WH-300 H HAC B

2 4 5 7

D P P 01

WH-400 H HAC B

2 4 5 7

D P P 01


Tables, Figures, & Documents ............................ 5

Installation Basics ....................................................... 6 Unit description ........................................................................ 6 Unpacking the unit ................................................................... 6 Optimum Placement ................................................................ 6 Electrical Connections ............................................................. 6 Control Transformer ................................................................. 6 Outdoor Circulator Wiring ........................................................ 6 Outdoor Water Valve Wiring .................................................... 6 Indoor Circulator Wiring ........................................................... 7 Indoor Water Valve Wiring ....................................................... 7 Control Requirements: 1. BACnet ............................................ 7 Control Requirements: 2. Setpoint Control .............................. 7 Control Requirements: 3. Hardwired Control ........................... 8 002188CDG – Typical ICR Connections for Setpoint Control .. 9 002067CDG - Typ. Heating Only Zone Wiring (Setpoint) ...... 10 002069CDG - Typ. Heating Only Zone Wiring (Hardwired) ... 11 Piping & Loop Information ................................... 12 Water Line Connections ......................................................... 12 Open Loop Systems .............................................................. 12 Ground Loop Systems ........................................................... 12 PC Application (PC APP) ....................................... 13 PC Application Menus............................................................ 13 LCD Display & Menus ............................................. 29 Setpoint Control ......................................................... 32 1. Setpoint Control Method - Indoor Loop .............................. 32 2. Setpoint Control Method - HTS/CTS .................................. 32 a) Heat Pump Mode - One Tank ........................................ 32 b) Heat Pump Mode - Two Tanks ...................................... 33 c) Chiller Mode ................................................................... 34 Indoor Circulator Operation .................................................... 35 Outdoor Reset ....................................................................... 35 BACnet Interface ........................................................ 36 Startup Procedure ..................................................... 39 Pre-start Inspection ................................................................ 39 Unit Startup ............................................................................ 40 Startup Record ....................................................................... 41 General Maintenance ............................................... 42 Troubleshooting Guide .......................................... 43 Repair Procedures ................................................................. 52 Model Specific Information .................................. 53 Loop Flow Rates .................................................................... 53 Refrigerant Charge Chart ....................................................... 53 Shipping Information .............................................................. 53 Indoor Loop Pressure Drop .................................................... 53 Outdoor Loop Pressure Drop ................................................. 54 Minimum and Maximum Operating Temperatures ................. 55 Standard Capacity Ratings - W-Series .................................. 56 Performance Tables: W-150 .................................................. 57 Performance Tables: W-185 .................................................. 58 Performance Tables: W-240 .................................................. 59 Performance Tables: W-300 .................................................. 60 Performance Tables: W-400 .................................................. 61 Performance Tables: W-500 .................................................. 62

Table of Contents Performance Tables: W-600 .................................................. 63 Performance Tables: W-800 .................................................. 64 Performance Tables: W-900 .................................................. 65 Performance Tables: WH-150 ............................................... 66 Performance Tables: WH-185 ............................................... 67 Performance Tables: WH-240 ............................................... 68 Performance Tables: WH-300 ............................................... 69 Performance Tables: WH-400 ............................................... 70 Electrical Specifications - W Series ....................................... 71 Electrical Specifications - WH Series ..................................... 72 Electrical Diagrams (All Voltages) .......................................... 73 Refrigeration Circuit Diagrams ............................................... 76 Dimensions - Without Enclosure (Sizes 150-400) .................. 79 Dimensions - With Enclosure (Sizes 150-400) ....................... 80 Dimensions - Without Enclosure (Sizes 500-900) .................. 81 Dimensions - With Enclosure (Sizes 500-900) ....................... 82 APPENDIX A: Control Board Description ... 83 APPENDIX B: PC App Installation ................... 88 APPENDIX C: USB Driver Setup ....................... 89 APPENDIX D: Updating Firmware via PC App .................................... 90 APPENDIX E: Updating Firmware via Jumper Pins ......................... 92 Warranty .......................................................................... 94


Tables, Figures, & Documents Table 1 - Power Supply Connections .............................................................................................................. 6 Table 2 - Control Transformer ......................................................................................................................... 6 Table 3 - Control Signal Description ................................................................................................................ 8 Table 4a - Typical W-Series Aquastat Settings ............................................................................................... 8 Table 4b - Typical WH-Series Aquastat Settings ............................................................................................. 8 Table 5 - Loop Connections .......................................................................................................................... 12 Table 6 - Buffer Tank Size ............................................................................................................................. 12 Table 7a - Typical W-Series Temperature Setpoints ..................................................................................... 33 Table 7b - Typical WH-Series Temperature Setpoints .................................................................................. 33 Table 8 - Typical Temperature Setpoints (Chiller Mode) ............................................................................... 34 Table 9 - BACnet Objects—CONTROL (READ/WRITE) ............................................................................... 36 Table 10 - BACnet Objects—DATA (READ ONLY) ....................................................................................... 37 Table 11 - BACnet Objects—ALARMS AND FAULTS (READ ONLY) .......................................................... 38 Table 12 - Loop Flow Rates .......................................................................................................................... 53 Table 13 - Refrigerant Charge (Per Circuit) ................................................................................................... 53 Table 14 - Shipping Information..................................................................................................................... 53 Table 15a - Indoor Loop Pressure Drop ........................................................................................................ 53 Table 15b - Outdoor Loop Pressure Drop - Open Loop ................................................................................. 54 Table 15c - Outdoor Loop Pressure Drop - Closed Loop .............................................................................. 54 Table 16a - W-Series Minimum & Maximum Operating Temperatures ......................................................... 55 Table 16b - WH-Series Minimum & Maximum Operating Temperatures ....................................................... 55 Table 17 - W-Series Standard Capacity Ratings ........................................................................................... 56 Table 18a - W-Series Electrical Specifications .............................................................................................. 71 Table 18b - WH-Series Electrical Specifications ........................................................................................... 72 Table 19 - Control Board Connector Descriptions (Top) ............................................................................... 78 Table 20 - Control Board Connector Descriptions (Left Side) ....................................................................... 79 Table 21 - Control Board Connector Descriptions (Bottom) ......................................................................... 80 Table 22 - Control Board Connector Descriptions (Right Side) .................................................................... 81 Dimensions—Without Enclosure (Size 150 to 400) ...................................................................................... 79 Dimensions—With Enclosure (Size 150 to 400) ........................................................................................... 80 Dimensions—Without Enclosure (Size 500 to 900) ...................................................................................... 81 Dimensions—With Enclosure (Size 500 to 900) ........................................................................................... 82 002188CDG – Commercial W Typical ICR Connections for GEN2 Setpoint Control ...................................... 9 002067CDG - Typical Zone and Auxiliary Wiring with GEN2 Setpoint Control (Heating Only) ...................... 10 002069CDG - Typical Zone and Auxiliary Wiring with GEN2 Hardwired Option (Heating Only) ................... 11 001717SCH – W-150-1000-H***-*-*D-PP High Voltage Schematic Diagram ................................................ 73 001718SCH – W-150-1000-H***-*-*D-PP Schematic Diagram ..................................................................... 74 001719ELB – W-150-1000-H***-*-*D-PP Electrical Box Diagram ................................................................. 75 001720RCD – W-Series H(W) (150-1000) Dual Circuit Refrigeration Circuit Diagram—Heating Mode ........ 76 001721RCD – W-Series HAC(W) (150-800) Dual Circuit Refrigeration Circuit Diagram—Heating Mode ..... 77 001722RCD – W-Series HAC(W) (150-800) Dual Circuit Refrigeration Circuit Diagram—Cooling Mode ..... 78

Tables Figures

Documents


Installation Basics Unit Description

These units are 2-compressor dual refrigeration circuit water-to-water heat pumps. The W-series uses R410a refriger-ant to achieve a standard geothermal temperature range, while the WH-series uses R134a refrigerant to achieve a higher 160°F indoor output temperature (but with a minimum source tempera-ture of 45°F). They are designed in the ’vertical chiller’ style, for ease of passage through doors and convenience for multiple-unit installations.

Unpacking the Unit When the heat pump reaches its destination it should be

unpacked to determine if any damage has occurred during shipment. Any visible damage should be noted on the carrier's freight bill and a suitable claim filed at once.

Optimum Placement Locate the unit as per the system design drawings. The

access panels on the ends of the units must remain clear of obstruction for a distance of 3 ft (1 m) to facilitate installation and servicing. Since all serving can be done from the ends, no access is required to the long side panels, which are fully re-movable from the ends. This means that multiple units can be installed side by side with minimal clearance, although if large headers obstruct access to the piping-end panels, side clear-ance may be provided to ease access to the components locat-ed there.

The heat pumps are provided with rubber mounting feet (shipped inside electrical box), which must be installed on site. These will preserve the frame finish and dampen vibrations when used on solid concrete floors. Optional spring feet should be ordered when heat pump is installed on floors with flex, e.g. mezzanines.

Electrical Connections

The heat pump has several knockouts / holes for the elec-trical connections. A schematic diagram (SCH) and electrical box layout diagram (ELB) can be found inside the electrical box cover of the unit as well as in the Model Specific Information section of this manual.

The Electrical Specifications in the Model Specific Infor-

mation section and the ELB document contain information about the size of wire for the connections, as well as the recom-mended breaker size. Power supply connections to the unit are made directly to the power block inside the electrical box and are as per TABLE 1. Ground is to be connected to the GND lug inside the electrical box.

TABLE 1 - Power Supply Connections Line Description Voltages

L1 Line 1 All

L2 Line 2 All

L3 Line 3 All 3-phase (208-3-60, 460-3-60, 575-3-60, 380-3-50)

N Neutral No Connection

TABLE 2 - Control Transformer

Voltage Low Voltage Circuit Protection

(1) 208/230-1-60 Resettable breaker on transformer

(2) 208-3-60 Resettable breaker on transformer

(4) 460-3-60 Primary / Secondary fuses




Control Transformer The low voltage controls are powered by a 100VA class II

transformer. Circuit protection is provided by either a resettable breaker on the secondary side of the transformer or primary and secondary fuses (refer to TABLE 2). Should the breaker trip (or fuse blow), locate and correct the problem and then reset the breaker by pressing in on it (or replace the blown fuse).

Outdoor Circulator Wiring The outdoor loop circulator provides flow between the heat

pump and the ground loop. In most multiple-unit commercial installations, the circulators (and the heat pump) will be con-trolled by the building automation system, since one circulator may serve several heat pumps. Connect circulator pumps as per site drawings.

If the heat pump is to control the outdoor circulator, there are dry contacts provided to control the circulator pump so that it will be turned on whenever the compressor operates. Wire to CP1 and CP2 on the terminal strip at the lower right side of electrical box, as shown on the following diagram 002188CDG and the wiring diagram (SCH) in the Model Specific Information section of this manual. Ensure that the total current draw does not exceed the value indicated on the diagram.

There is also provision for directly connecting an outdoor circulator contactor with 24VAC coil, without an external 24VAC source. See “Outdoor Water Valve Wiring - ON/OFF”, below. IMPORTANT: If the outdoor circulator is connected via CP1 and CP2, it may be unnecessarily activated at times when the compressor is not running, if using the Setpoint Control option (refer to Setpoint Control section of this manual). The heat pump will start and stop indoor circulators connected via CP1 and CP2 to sample the water temperature when the heat pump is not operating. Therefore, if using Setpoint Control, outdoor circulators should be connected as per “Outdoor Water Valve Wiring - ON/OFF”, below.

Outdoor Water Valve Wiring

ON/OFF: Connect a 24VAC outdoor loop water valve be-tween OV1 and GND (terminals DO_0 and LC on control board), as shown on the wiring diagram (SCH) in the Model Specific Information section of this manual. Ensure that the total current draw of all water valves does not exceed the value indicated on the diagram.

IMPORTANT NOTE: A properly qualified electrician should be retained for all connections to the heat pump and associat-ed controls. The connections to the heat pump MUST CONFORM TO LOCAL CODES.

IMPORTANT NOTE: For 208/230VAC-1-60 units, if connecting to 208VAC power supply move the red wire connected to the 240 ter-minal of the transformer to the 208 terminal of the transformer.


MODULATING: Connect a 0-10VDC or PWM driven water valve between OV2 and GND (terminals PWM3 and GND on control board), as shown on the wiring diagram (SCH) in the Model Specific Information section of this manual. An out-door modulating water valve will give the control board the means to restrict the outdoor loop water flow in cooling mode on reversing units, in case a low outdoor loop temperature causes a dip in the head pressure and therefore suction pressure. This will prevent nuisance low pressure control trips, for example when using cold open loop well water in cooling mode. It will be closed when unit is off, and will always be 100% open in heating mode.

The head pressure below which the modulating water valve will start restricting water flow can be adjusted via the Configuration page in the PC App. Default is 350 psi. Indoor Circulator Wiring

The indoor loop circulator provides flow between the heat pump and the buffer tank. In most multiple-unit commercial installations, the circulators (and the heat pump) will be con-trolled by the building automation system, since one circulator may serve several heat pumps. Connect circulator pumps as per site drawings.

If the heat pump is to control the indoor circulator, there are dry contacts provided to control the circulator pump so that it will be turned on whenever the compressor operates. Wire to CP1 and CP2 on the terminal strip at the lower right side of electrical box, as shown on the following diagram 002188CDG and the wiring diagram (SCH) in the Model Specific Information section of this manual. Ensure that the total current draw does not exceed the value indicated on the diagram.

There is also provision for directly connecting an indoor circulator contactor with 24VAC coil, without an external 24VAC source. See “Indoor Water Valve Wiring - ON/OFF”, below.

However, only if the indoor circulator is connected via CP1 and CP2 can it be activated at times when the compressor is not running, when using the Setpoint Control option (refer to Set-point Control section of the manual). The heat pump will start and stop indoor circulators connected via CP1 and CP2 to sample the water temperature when the heat pump is not oper-ating. Indoor Water Valve Wiring

ON/OFF: Connect a 24VAC indoor loop water valve between IV1 and GND (terminals DO_1 and LC on control board), as shown on the wiring diagram (SCH) in the Model Specific Infor-mation section of this manual. Ensure that the total current draw of all water valves does not exceed the value indicated on the diagram. MODULATING: Connect a 0-10VDC or PWM driven water valve between IV2 and GND (terminals PWM4 and GND on control board), as shown on the wiring diagram (SCH) in the Model Specific Information section of this manual. An in-door modulating water valve will give the control board the means to restrict the indoor loop water flow in heating mode, in case a low indoor loop temperature causes a dip in the head pressure and therefore suction pressure. This will prevent nui-sance low pressure control trips, for example in case a large zone containing cool water opens. It will be closed when unit is off (and not sampling for Setpoint Control), and will always be 100% open in cooling mode on reversing units.

The head pressure below which the modulating water valve will start restricting water flow can be adjusted via the Configuration page in the PC App. Default is 350 psi.

Control Requirements: 1. BACnet

In most multiple-unit commercial installations, the heat pump) will be controlled by the building automation system. Connect A / B / GND to lower left corner of control board as shown on the wiring diagram (SCH) in the Model Specific Infor-mation section of this manual. Refer to the BACnet Inter-face section of this manual for object names.

2. Setpoint Control One of the features of the GEN2 Control Board is built in

aquastat functionality (with optional outdoor reset) known as “Setpoint Control”. Refer to the Setpoint Control section of this manual for more information. If this control method is used, it eliminates the need for an external aquastat and temperature probe in the tank(s) and provides a three stage system along with delay timer for the hydronic auxiliary heat. No external con-trol signals are required for the non-reversing H and HW mod-els. A dry contact between RA and the O signal is required for the reversing HAC and HACW models to switch to cooling mode. Drawing 002067CDG shows a typical wiring setup for zones, zone circulator and hydronic auxiliary.

Note that for reversing models in cooling mode, it is im-

portant to choose zone thermostats or other control devices that continuously send an “O” signal, even when there is no cooling demand. This is to avoid repeated heating and cooling of the buffer tank on demand cycling, causing temperature lags and high electricity consumption.

When using the Setpoint Control method, hydronic auxilia-

ry heat can be activated by the heat pump’s control board. A 24VAC control signal is available to power the coil of an external contactor in order to operate hydronic auxiliary as the 3rd stage of heat. Connect contactor between HYD_AUX and GND (DO_2 and and LC on control board), as shown on the wir-ing diagram (SCH) in the Model Specific Information section of this manual.


TABLE 3 - Control Signal Description

Signal Description

CA 24VAC common (ground)

RA 24VAC hot

O* Cooling mode (reversing valve both stages)*

Y2A Compressor #2 (Top)

*reversing models only

Y1A Compressor #1 (Bottom)

Note that for reversing models in cooling mode, it is im-portant to choose zone thermostats or other control devices that continuously send an “O” signal, even when there is no cooling demand. This is to avoid repeated heating and cooling of the buffer tank on demand cycling, causing temperature lags and high electricity consumption.

TABLE 4a - Typical W-Series Aquastat Settings

HEATING

Stage 1 Stage 2 Stage 3 Item °F °C °F °C °F °C

Setpoint 108 42 105 41 90 32

Delta 8 4 8 4 20 10

Activation * 100 38 97 37 70 22

Delay

COOLING

Stage 1 Stage 2 Item °F °C °F °C

Setpoint 45 7 48 9

Delta 8 4 8 4

Activation * 53 11 56 13

*Activation is determined by the Setpoint and Delta values

10 minutes

3. Hardwired Control In this mode of operation, the compressor stages are

turned on and off according to an external thermostat or other switching device for 24VAC signals, e.g. a 2-stage aquastat. The CA, RA, O, Y1A, and Y2A connections are located on the right side towards the top of the control board, on the screw terminal connector section marked AQUASTAT.

The external signals required are shown in TABLE 3. A

dry contact from RA to Y1A will start the bottom compressor, and a dry contact from RA to Y2A will start the top compressor. Use stage 1 of the aquastat for Y1A and stage 2 for Y2A. Alter-natively, auxiliary heat may be controlled by the second stage of a the aquastat if desired (no connection to heat pump). Place the aquastat probe in a dry well at the top of the buffer tank. Drawing 002069CDG shows a typical wiring setup for zones, zone circulator and hydronic auxiliary. A dry contact between RA and the O signal is required for re-versing models to switch to cooling mode.

TABLE 4a & 4b show typical settings for the aq-uastats. With these settings, stage 1 will activate when the tank temperature reaches the activation point. If the load is too great, the tank temperature will continue to drop when heating until stage 2 is activated. As the tank temperature stops dropping and begins to increase when heating, stage 2 will turn off before stage 1, rather than at the same time as stage 1. There are three main advantages to this:

Less aquastat probe lag leading to reduced overshoot as the tank temperature rate of change is reduced when only Stage 1 is active.

Prolonged stage 1 runtime leads to increased overall efficien-cy.

Reduced number of compressor starts. The settings may be changed as desired; however stage 1

setpoint for heating should not exceed 130°F (54°C) for W-series and 160°F (71°C) for WH-series; stage 1 cooling setpoint should not be set below 43°F (6°C) for W-series and 45°F (7°C) for WH-series. Exceeding these setpoint limits will cause the heat pump operating pressures to approach the safety control settings, possibly causing nuisance shutdowns.

If only floor zones are being heated, it is highly recom-

mended to drop each of the heating setpoints by 15°F (8°C) for increased efficiency.

It is recommended that a buffer tank with electric elements

be selected to provide auxiliary heat. When using Hardwired Control, the tank element thermostat can be set to maximum, allowing the electric elements to be controlled by an external contactor placed in the power supply connections. The contac-tor can be connected to stage 2 of the heating aquastat via an optional 0-2hour timer. Diagram 002069CDG show a typical wiring setup for zones, zone circulator, and hydronic auxiliary for a heating only system.

TABLE 4b - Typical WH-Series Aquastat Settings

HEATING


Setpoint 150 66 147 64 130 54

Delta 8 4 8 4 20 10

Activation * 142 62 139 60 110 44

Delay

COOLING


Setpoint 45 7 48 9

Delta 8 4 8 4



10 minutes





TABLE 6 - Buffer Tank Size Heat Pump

Size Minimum Size

gal (L)

150 100 (380)

185 130 (500)

240 160 (600)

300 200 (750)

400 250 (950)

500 320 (1200)

600 400 (1500)

900 560 (2100)

Recommended Size gal (L)

120 (450)

180 (680)

200 (750)

250 (950)

300 (1100)

400 (1500)

500 (1900)

600 (2300)

800 520 (2000) 600 (2300)

TABLE 5 - Loop Connections

Model Size Connection Size (SS Victaulic)

150 2” (51mm)

185 2” (51mm)

240 2” (51mm)

300 2” (51mm)

400 2” (51mm)

600 3” (76mm)

900 3” (76mm)

500 3” (76mm)

800 3” (76mm)

IMPORTANT NOTE: Units are shipped configured for water for both the indoor and the outdoor loop. This prevents the heat exchangers from freezing when a low pressure alarm occurs regardless of the fluid type and mixture in the sys-tem loops. For W-series, during commissioning or startup the fluid type and mixture for both the indoor and outdoor loop must be configured via the PC APP using the Tools - Configuration menu. (There is no need for antifreeze with WH-series due to source temperature limit of 45°F.)

Open Loop Systems

The temperature of the well water should be a minimum of 45°F (7°C). Refer to the Model Specific Information section for a complete table of temperature operation limits. With prop-er flow, there should be 5-7°F (3-4°C) delta T between the Out-door IN and OUT water temperatures of the heat pump when operating in the heating mode.

Discharge water from the heat pump should be returned to the ground as per the system piping diagram and local codes.

IMPORTANT NOTE: Some well water applications may re-quire a modulating water valve connected to the heat pump’s control board to restrict water flow under certain conditions. This will avoid low pressure trips due to refrig-eration system overcapacity when the buffer tank is cold upon heating startup; or if a large heating zone opens and causes a large drop in the tank temperature; or in cooling mode when rejecting heat into relatively cold well water. Ground Loop Systems

Note that in northern climates, only the W-series is suita-ble for use with a ground loop (WH is generally not suitable).

Adequate freeze protection for the loop fluid is required.

The proper type and quantity of antifreeze must be added to the ground loop as per the system design requirements.

Once the antifreeze solution has been added to the ground loop and all air has been purged from the system, the entire ground loop can be pressurized to the appropriate value as per the system design requirements. If possible, the ground loop circulators should be tested prior to starting the heat pump to ensure that the loop is functioning properly.

Piping and Loop Information Water Line Connections

The Outdoor Loop (Supply) and Indoor Loop (Hot) connec-tions are stainless steel pipe designed for Victaulic connectors. The connection sizes are shown in TABLE 5. Piping should be done as per the system piping diagram as well as local codes. It is recommended that all piping be insulated to prevent con-densation. All piping connected to the unit must be sufficiently externally supported so as not to strain the heat exchanger con-nections.

To avoid fouling of the brazed plate heat exchangers, a strainer is required on each loop IN connection. The strain-er should be specified to stop particles larger than 1 mm, and corresponds to a mesh size of 16-20 depending on wire diame-ter. For closed loops, the strainer may be able to be removed after startup and commissioning is complete and a cleaned filter shows no removed particles after 1 week of operation.

Each port has a temperature sensor. The output is shown on the LCD Display on the unit and may also be viewed via the PC APP. There is also a P/T port installed in each line. Both of the “OUT” ports have a flow switch on reversing models; only one for non-reversing models.

Buffer tank sizing should be as per the engineering specifications for the jobsite. However, the minimum buffer tank size should follow the rule of 8 US gallons per ton of heat pump capacity to avoid problems with short-cycling the heat pump(s). TABLE 6 shows the minimum buffer tank size for each heat pump along with the recommended size. The recommended size will provide longer runtimes and fewer starts for improved efficiency.

WARNING: ENSURE THAT BOTH THE IN-DOOR AND OUTDOOR FLUID TYPES ARE SET TO WATER USING THE PC APP. FAIL-URE TO DO SO COULD CAUSE THE HEAT EXCHANGER TO FREEZE AND RUPTURE, DESTROYING THE HEAT PUMP AND VOID-ING THE WARRANTY.

WARNING: REPEATED RESETS OF A LOW PRESSURE LOCKOUT COULD CAUSE THE HEAT EXCHANGER TO FREEZE AND RUP-TURE, DESTROYING THE HEAT PUMP AND VOIDING THE WARRANTY.

WARNING: It is recommended that enough antifreeze be added to allow for a temperature 20°F (11°C) lower than the expected lowest loop fluid temperature entering the heat pump.


NOTE: Before using the PC Application refer to Appendices B and C for installation instructions for the PC Application and USB driver for the com port. Both must be installed in order to run the PC APP and communicate with the control board. Connect a USB cable between the PC and the control board USB connector located at the bottom center of the board. Double click on the NordicGEN2Vx.xx application to launch the PC APP. You should see a screen similar to the one below. The revision of the PC APP is shown in the top left corner of the screen. Click the Connect button to begin communications with the control board.

PC Application (PC APP)

Once connected, the menus and buttons will become accessible, the number of Objects available and Read should appear (they should be the same) and the Polling LED will begin to flash. The PC time and date will appear at the bottom left corner of the screen. Clicking on “Control Board Date and Time” will display the current control board date and time. If the date and time need to be adjust-ed, click on menu Tools—Set Date and Time. The control board date and time will be set to that of the PC.

PC Application Menus The following pages describe the PC APP’s menus in detail. There are five main menus: File, View, Graphs, Tools, Help. File Menu: This menu handles page arrangements. If one or multiple pages are open and arranged as desired for viewing, this page arrangement may be saved and re-used the next time the PC APP is used. File—Open: Opens a saved page arrangement. File—Save: Saves the current page arrangement under the current name. File—Save As: Save the current page arrangement under a new name. File—Exit: Exits the PC Application. Windows Menu: This menu is used to arrange windows (pages), or to bring a particular window to the front. Windows—Cascade: Arranges windows one in front of the other each with a small right and down offset from the last. Windows—Tile Vertical: Arranges windows side by side, stretching them fully from top to bottom. Windows—Tile Horizontal: Arranges windows up and down, stretching them fully from left to right Windows—Close All: Closes all open windows. Windows— Window Name: Brings the named open window to the front. Help Menu: This simply shows information about the PC Application. Help—About: Displays the window shown to the right.


View Menu: This menu handles all of the operational viewing screens. Clicking on the View submenus will open the page in the PC APP’s frame. The next few pages of the manual show screenshots of each of the pages along with some descriptions of what is on each page. View—Control Panel: The main control screen page will open, shown below.

Operational status of the heat pump system.

Manual controls are enabled when in MANUAL OVER-RIDE mode.

Indicators show the de-mand from the control sys-tem.

Clicking the SERVICE but-ton will disable the unit and fully open the EEV to allow repair work to be done to the refrigeration system.

Stage run timer.

EEV data. Status light indicates when in use.

Refrigeration system pressure data, along with alarm indicators.

Refrigeration system temperature data.

Short Cycle timer and override button for when unit is being serviced.

Heat pump model infor-mation.

Click on STATS button or menu View-Stage Stats to open the Stage Sta-tistics window shown below.

Erase the compressor statis-tics (only for if a compressor should need to be replaced).

Compressor current.


View—Alarms: The alarms page has three tabs, the first shows the current alarm status, number of alarms, high and low re-frigeration alarm cutout values as well as the short cycle timer. The second tab shows a list of alarms that have occurred since the PC APP has been operating (this will be lost when the PC is disconnected from the controller board.) The third tab is a list of board hard-ware faults. RESET button: This will reset all alarms and alarm counts, including a permanent alarm.

WARNING: Repeated resets can freeze and rupture the heat exchanger, ruining the heat pump and voiding the war-ranty. The source of the alarm should be determined before resetting the unit if possible or during operation after a reset.

!

ALARMS Tab (see screen shot on next page): NOTE: Alarms that are greyed out are not applicable to the system setup and are not monitored by the control board. NOTE: Refer to Alarms and Faults screenshot on next page to see which alarms have a count. Alarms without a count: These alarms only occur one time at which point they immediately create a Permanent Alarm. Alarms with a count: When an alarm occurs the compressor will stop, the alarm count will increase and the Short Cycle Timer will start. When the SC Timer expires the compressor will re-start. If no further alarms occur within Count Reduce Time, the alarm count will be reduced by 1. If another alarm occurs within Count Reduce Time (see Configuration Page) the count will increase by 1. If alarms continue to occur, when the alarm count reaches the Maximum Count value a Permanent Alarm will occur. Master Alarm: This alarm occurs when any alarm occurs. It is used to simply indicate that there is an alarm. Permanent Alarm: The compressor will be locked out until the Permanent Alarm is manually reset either by cycling the power or clicking on the RESET button Low Pressure: A low pressure alarm occurs when the suction pressure drops to or below the Low Pressure Cutout value. The low pressure is checked just before a compressor start, if it is OK the compressor will start, otherwise an alarm will occur. When the compressor starts, the low pressure alarm will be ignored for the number of seconds that Low Pressure Ignore is set to, after which the low pressure alarm will be re-enabled. This allows a dip in suction pressure below the cutout point during startup without causing a nuisance alarm. High Pressure: A high pressure alarm occurs when the discharge pressure rises to or above the High Pressure Cutout Value. Compressor Monitor: This alarm occurs when the compressor protection module sends a fault signal to the control board, generally due to the compressor windings overheating. Compressor Status: This alarm occurs when there is a current draw on the compressor but no call for the compressor to be on (ie welded contactor) or when there is a call for the compressor to be on but there is no compressor current draw (ie manual high pressure control is open or contactor failure). Requires current sensor accessory. Phase Monitor: This alarm occurs when the Phase Monitor detects a fault condition and sends a fault signal to the control board. For three phase units only and requires Phase Monitor accessory. Loss of Charge: This alarm occurs if both the low pressure and high pressure sensors are below 30PSIG (207kPa). Outdoor Flow: This alarm is ignored on compressor start for the number of seconds the Outdoor Flow Ignore on Start is set to. Alarm monitoring will begin when the timer expires. Indoor Flow: This alarm is ignored on compressor start for the number of seconds the Indoor Flow Ignore on Start is set to. Alarm monitoring will begin when the timer expires. IMPORTANT NOTE: The datalogging function of the GEN2 Control Board is a very useful tool for troubleshooting alarms. It provides a history of the unit operation up to and including the time at which the alarm(s) occurred. Go the Alarms Troubleshooting section of the Trouble Shooting section of the manual to address alarm issues.


This button will erase all alarms and alarm counters, including a permanent alarm.

Low Pressure Cutout. High Pressure Cutout.

This button will reduce the short cycle timer value to 9 seconds.

Greyed out alarms are not applicable to the system.

Master Alarm occurs when any alarm occurs.

Short Cycle Timer counts down time until the next com-pressor start is allowed.

Each alarm that occurs while the PC APP is connected to the control board will appear here. The alarm type and a time stamp will be shown. The alarms list will be erased when the PC APP is disconnected from the control board.

This button will erase the alarm events in the Alarm List.

ALARMS LIST Tab: This tab show a history of alarms that have occurred since the PC APP was connected to the control board. This list will be lost when the PC APP is disconnected.


Fault Indicators

Greyed out do not apply.

BOARD FAULTS Tab: This tab shows hardware faults that could occur. If one of these faults occurs there may be a problem with the control board hardware or with the LCD Display and buttons. NOTE: If a Board Fault occurs, try cycling the power to the heat pump. Turn the power off for 10 seconds and then back on again. If the fault persists then there is most likely a problem with the hardware and the board will need to be replaced. Digital Inputs: A failure has occurred and the Control Board may no longer respond to the digital input signals. Digital Outputs: A failure has occurred and the digital outputs may no longer work properly. PWM Outputs: A failure has occurred and the PWM / 0-10VDC outputs may no longer work properly. Analog to Digital: A failure has occurred and the data from the A/D converter may be corrupt resulting in erratic data values. Real Time Clock: A failure has occurred, system time / date may no longer be valid, all time stamped data may be corrupt. Flash Memory: A failure has occurred stored data may be corrupt. It may be possible to correct this by using the menu item Tools—Reset to Factory Defaults. If this clears the fault then the system configuration will have to be setup again. Menu Buttons: A failure has occurred and the Control board may no longer respond to menu button keypresses. Try turning off the power, disconnecting and reconnecting the cable between the LDC Display board and the Control Board and then turning the power back on again. If this does not work then either the LDC Display board, the cable or the driver section of the Control Board may be faulty. LCD Display: A failure has occurred and display may show erratic data, no data or may not turn on at all. Try turning off the power, disconnecting and reconnecting the cable between the LDC Display board and the Control Board and then turning the power back on again. If this does not work then either the LDC Display board, the cable or the driver section of the Control Board may be faulty. Temperature Sensors: A failure has occurred or the sensor is disconnected. Greyed out sensors do not to apply to the system as configured. Some sensors may be optional, go to the Configuration Page to enable/disable them. IMPORTANT NOTE: If the Indoor OUT (I_OUT) probe is faulty or disconnected, neither the heat pump nor the auxiliary will operate if using Setpoint Control. They will continue to operate under Signals or BACnet control.


View—Setpoint Control : Shows the on-board aquastat control screen. This screen is only available when Control Source HYD on the Configuration Page is set to Setpoints. This screen is described in detail in the Setpoint Control section of the manual.

View—Water Lines: Shows the water line temperatures. For the W-series, the Outdoor IN, Outdoor OUT, Indoor IN and Indoor OUT are connected to the water lines inside the unit.


View—Digital Inputs: Shows the digital inputs and their in-dividual status (ON/OFF). They may be individually controlled when in Manual Override Mode in order to facilitate trouble shooting.

View—Digital Outputs: Shows the digital outputs and their individual status (ON/OFF). They may be individually controlled when in Manual Override Mode in order to facilitate trouble shooting.

View—Analog Inputs: Shows the Analog inputs and their individual settings and values. Click on the EDIT button to modify the blue boxes (button will now say SAVE). For each channel a name may be selected (up to 16 characters), and the multiplier and Offset values may be set to accommodate the connected sensor scaling. Signals may be 4-20mA (channel jumper on board ON) or 0-10VDC (channel jumper on board OFF). A variety of units are also available for selection of com-mon measurement types. Click on SAVE to save the changes. Values are kept even when power is removed from the unit.

View—PWM Channels: Shows the PWM channels and their individual status (0-100%). They may be individually controlled when in Manual Override Mode in order to facilitate trouble shooting.


Graphs Menu: This menu is a list of the available graphs. Graphs are real-time and show a time stamp of when the recording start-ed as well as a current time which will show when the graph was Screen Printed. Each graph has a CLEAR button which will erase the stored data and restart the graph. There is also a master CLEAR ALL button at the top right of the PC APP, this will clear all open graphs and re-start them all simultaneously to keep them in sync with each other. The refresh rate for the graphs is also located at the top right of the PC APP. TIP: To screen print a graph and save it as a picture, press Print Screen and then paste the clipboard into MS Paint. Select the desired graph with the selection tool and copy it to a new MS Paint, then save the file as the desired name. Here is the complete list of available graphs: Graph— Control Signals Graph: ON/OFF status of the system control signals. EEV Graph: EEV position, the suction line temperature and superheat. Refrigeration Pressures Graph: Suction and discharge pressures. Refrigeration Temperatures Graph: Evaporation and condensing temperatures. Outdoor Fan Graph: Suction (heating) or Discharge (Cooling and defrost) pressure vs outdoor fan speed. Outdoor Temperature Graph: Suction (heating) or Discharge (Cooling and defrost) pressure vs outdoor temperature. Water Lines Graph: Indoor IN, Indoor OUT and Indoor Delta T values. Discharge vs Hot Tank Graph: Discharge pressure vs tank temperature. HTS CTS Graph: For control systems using the HTS and/or CTS probe(s). Analog Inputs Graph: All six analog input channels (0-10VDC or 4-20mA). PWM Channels Graph: All four PWM / 0-10VDC output channels as well as one PWM / 0-10VDC input channel. Input Power Graph *: For future use. An example of a graph is shown on the next page.


Graph Name.

CLEAR but-ton erases all graph data.

Checkboxes to select which items are graphed.

Current values.

Graph Start Time.

X axis = Number of samples. Elapsed time = Number of Samples x Refresh rate. ie 20 samples by 1second refresh = elapsed time of 20seconds.

Graph Printed Time.

Refresh Rate.

Primary Y axis on the left, Second-ary Y axis on the right.

Below is an example of a typical graph screen. Items that are checked will be plotted, unchecked items will not. The graph screens show the time the graph started as well as the current time to time stamp the graph when screen printed.


The Enabled Indicators show which alarms are enabled and which are disabled .

If an alarm is standard or not available the Enable button will be greyed out. If an alarm is optional (may re-quire accessory items) the Enable button will be acces-sible, click on it to enable the alarm.

Clicking this will reset the saved parameters to the default values. The configuration will need to be completed afterwards.

Green when pa-rameters have been updated, red during the update.

Firmware Revision can also be seen on the LCD Display during power up.

Model Configura-tion is used to se-lect the system type.

Jumper configuration is used to select system options. Items that do not pertain to the type of sys-tem selected are greyed out.

Fluid selection determines the low pressure cutout value. Select the appropriate Fluid Type and Fluid Mixture by volume. SEE WARNING ABOVE.

Low pressure cutouts are determined by the combi-nation of Refrigerant Type, Fluid Type and Fluid Mix-ture.

High pressure cutouts are determined by Refrigerant type.

Control Source HYD selects how the system will be controlled. The options are: BACnet, Setpoints and Signals.

Click to enable/disable the sys-tem. Configuration changes will disable the system automatically. Units are shipped disabled.

Tools Menu: This is a list of the various tools are used for system setup and monitoring. Tools—Configuration: This is where the system setup is done. THIS SHOULD BE DONE ONLY BY A QUALIFIED INSTALL-ER. Improper settings could cause the system to operate poorly or not at all. WARNING: Selecting the wrong Fluid Type and/or Fluid mixture can cause the heat exchanger to freeze, possibly rupturing it and destroying the heat pump, VOIDING THE WARRANTY. Ensure the Fluid Type and Fluid mixture match the fluids and mixtures that have actually been put into the system.

Outdoor Temperature Enable if using optional sensor to measure out-side temperature which is used in conjunction with the Outdoor Reset func-tionality of Setpoint Con-trol

Setpoints Method Selects whether the ICR method (default) or HTS/CTS method is used for tank sampling.


The following describes each item on the Configuration Tab of the Configuration Page . IMPORTANT NOTE: System setup is done at the factory. Normally, only the control source, optional alarms and fluid type / fluid mix may need to be changed. Note that items that become unavailable or are automatic will be greyed out. Model Configuration: These are used to select the type of heat pump the control board is installed in. Model Series: Select the model series (refer to nameplate on unit) This will update remaining items to default values. Model Size: Select the model size (refer to nameplate on unit). Model Function: Select the model function (refer to the nameplate on the unit). Refrigerant Type: Select the refrigerant type (refer to the nameplate on the unit). Number of Stages: Automatically selected. EEV Step Range: Automatically selected. Jumper Configuration: These are system level settings. Control Source AIR: Not Applicable. Control Source HYD: Select desired control source: BACnet: System is controlled via BACnet MS/TP RS-485 Interface. Refer to the BACnet Interface Section of the manual for more information.

Signals: System is controlled via hardwired signals from an external source. Refer to the Ther-mostat Requirements section of the manual for more information.

Setpoints: System is controlled via on-board aquastat functionality. Refer to the Setpoint Control section of the manual for more information. Setpoints Method: Applicable only if Setpoints selected for Control Source HYD. Select Indoor Loop (default) for the Indoor Circulator Sampling method or HTS / CTS to use external probes mounted in tanks. Air/Hydronic Priority: Not applicable. Number of Tanks: Applicable only if Setpoints selected for Control Source HYD and HTS / CTS selected for Setpoints Method. Select One for single tank systems or Two for systems with a hot and cold tank. Fan En. For Hydronic: Not applicable. Heat Pump / Chiller: Applicable only for H models.. Pressure Cutouts: Automatically Selected based on Refrigerant Type, Fluid Type and Fluid Mixture. Alarm Controls: These are optional or automatically selected alarms. If a button is greyed out and the Enabled Indicator is on the alarm is automatic, if the Enabled Indicator is off then the alarm is not available. Buttons that are not greyed out are optional alarms. Outdoor Flow: Automatically selected. Indoor Flow: Automatically selected. Outdoor IN and OUT: Automatically selected. Indoor IN and OUT: Automatically selected. Phase Monitor1: Automatically selected. Compressor Status1: Selectable. Click to enable/disable. Compressor Monitor1: Automatically selected.


The screenshot below shows the Alarms and Delays tab of the Configuration Page. Click on the UP/DOWN arrows to change the value, note that values have both a low and high limit. Once values have been selected, click on APPLY to save the changes, a con-firmation window will appear (see below), click on OK.

Click on UP/DOWN arrows to adjust values within the range limits.

Items that do not apply to the model are greyed out.

Maximum Count is the number of alarms al-lowed before a perma-nent lockout occurs.

Count Reduce Time is the number of hours after which the alarm count is reduced by 1 if no other alarm occurred within the timeframe.

Short Cycle Delay is the number of minutes before the unit can start again after a normal shutdown.

The number of minutes before the unit can start again after alarm shutdown.

Ignore On Start is the number seconds an alarm will not be moni-tored after a compres-sor start occurs.


Tools—Calibration: NOTE: Generally there is no need for calibration. The suction and discharge pressures may be calibrated in increments/decrements of 1PSIG if there is a discrepancy in the readings when compared to a known good reference. Temperature sensors may be adjusted in increments/decrements of 0.1F. There is an AUTO CALIBRATION routine in the program that continually calibrates the temperatures sensors against an on board reference by applying an offset to the temperature sensors. Calibration adjustments made here are in addition to the Auto Calibration routine. Click on the RESET ALL CALIBRATIONS button to clear all calibration data. A popup window will appear for confirmation.

Tools—Set Date and Time: This will synchronize the date and time of the Control Board with the PC date and time. The Date and time of both the PC and the Control Board are shown in the status bar at the bottom of the APP. Click on the Control Board Date and Time(Click): button to show/refresh the control board date and time. Tools—Reset to Factory Defaults: This will reset all parameters to default values. THE SYSTEM MUST BE RECONFIGURED AFTER A RESET IS PERFORMED. A reset will default the system to a two stage ATW Series Size 65 with Signals as the control source. Calibrations, alarm delays, analog configurations, compressor statistics and Setpoint Control values will be returned to defaults as well.

Calibration Adjustment. Pressures are +/-1PSIG, temperatures are +/- 0.1°F.

Current values in standard and metric.

Temperature Auto Calibra-tion information. The offset is applied to the temperature sensors. Calibration adjust-ments made here are in addition to the Auto Calibrat-ed Values.


Tools—Set Date and Time: This will synchronize the date and time of the Control Board with the PC date and time. The Date and time of both the PC and the Control Board are shown in the status bar at the bottom of the APP. Click on the Control Board Date and Time(Click): button to show/refresh the control board date and time. Tools—Reset to Factory Defaults: This will reset all parameters to default values. THE SYSTEM MUST BE RECONFIGURED AFTER A RESET IS PERFORMED. A reset will default the system to a two stage ATA Series Size 65 with Signals as the control source. Calibrations, alarm delays, analog configurations, compressor statistics and Setpoint Control values will be returned to defaults as well.

Tools—Datalogging: This will display the on-board datalogging screen. The datalog rate is set via the dropdown box at the top right of the APP. A log will be taken at the datalog rate whenever the system is operating or the system is off and the SC Timer is counting down. It will stop taking logs after the SC Timer expires until the system restarts again. It will stop taking logs when a per-manent alarm occurs. The functionality of the screen is described below. Click on the Enable/Disable Tab to customize which col-umns are shown/hidden.

Finds the earliest date log entry.

Loads the # of LOGS beginning from the se-lected date.

Erases the screen only.

Erases all logged data in the control board and resets the log count to 0.

Export the data to a file.

Clicking anywhere on a row will update all LEDs to show the status at the time of the log.

Click on this tab to customize which col-umns are shown/hidden.

Click on the checkboxes to customize which columns are shown/hidden in the datalog table.


Tools—MODBUS: For Future Use. Tools—Parameters: WARNING! The Parameters page is for advanced use only. Changing parameter values can cause the system to stop functioning properly. The parameters page shows all configurable memory spaces with their name and current value and allows them to be edited directly. To change a parameter value type in the new value and press ENTER.

Clicking on menu item Tools—Parameters will display this warning.

Type in the new value and press ENTER, the confirmation popup will appear, click on OK.

Click on YES to open the parameters page.

Click this button to reload the table with the values from the control board memory.


Tools—SYSTEM TIMERS: This page shows all timers by name along with their current values.


Below are three pictures of the LCD Display and menu buttons. The screenshots are examples of the unit status and operating data displayed when at the message display level (top level). Pressing ENTER will enter into the menu levels beginning with the Main Menu. Pressing OK will toggle between message auto scroll and manual scroll modes. UP and DOWN do not do anything if in auto scroll mode, they cycle through the messages if in manual scroll mode.

LCD Display & Menus

2x16 LCD Display

UP button: Use this to scroll up through the items availa-ble at a menu level.

OK/EXIT button: Use this to come back up one menu level. Also saves value if at parame-ter menu level.

ENTER button: Use this to push down to the next menu level. Also saves value if at parameter menu level.

DOWN button: Use this to scroll down through the items availa-ble at a menu level.


Main Menu: This is a list of the various tools are used for system setup and monitoring. They are each described below. The table shows what is displayed based on each press of the ENTER button starting at the Main Menu level.

ENTER (From Main)

ENTER (First Press)

ENTER (Second Press)

ENTER (Third Press) Description

Setpoint Control — Setpoints — Heating — Stage 1 Setpoint Stage 1 stops when water temperature rises to this point.

(only if using Setpoint control) — Stage 1 Delta Stage 1 starts when water temperature

drops below setpoint by this amount.

— AUX (S2) Setpoint Stage 2 stops when water temperature rises to this point.

— AUX (S2) Delta

Stage 2 time delay starts when water tem-perature drops below setpoint by this amount. (Stage 2 starts immediately if time delay is set to 0).

— AUX (S2) Delay Delays Stage 2 start by timer amount.

— Outdoor Reset Temperature factor to use for outdoor reset table (Outdoor Reset must be enabled).

— Cooling — Stage 1 Setpoint Stage 1 stops when water temperature drops to this point.

— Stage 1 Delta Stage 1 starts when water temperature rises above setpoint by this amount.

— Stage 2 Setpoint Stage 2 stops when water temperature drops to this point.

— Stage 2 Delta Stage 2 starts when water temperature rises above setpoint by this amount.

System Enable* Stage 1 (BOT) — Disable Disable Stage 1 compressor.

— Enable Enable Stage 1 compressor.

Stage 2 (TOP) — Disable Disable Stage 2 compressor.

— Enable Enable Stage 2 compressor.

Service Mode Stage 1 (BOT) — Service Mode? — No Do not enter Service Mode for Stage1.

— Yes Enter into Service Mode for Stage1.

Stage 2 (TOP) — Service Mode? — No Do not enter Service Mode for Stage2.

— Yes Enter into Service Mode for Stage2.

EEV Control — EEV1 (Local) — Auto/Manual — Auto Puts EEV in Auto mode.

— Manual Puts EEV in Manual mode.

— Manual Position — EEV Position (%) Sets EEV to manual position.

— EEV2 (Remote) — Auto/Manual — Auto Puts EEV in Auto mode.

— Manual Puts EEV in Manual mode.

— Manual Position — EEV Position (%) Sets EEV to manual position.

* NOTE: if both Stages are disabled then the auxiliary and ICR sampling will also be disabled.


Main Menu Continued ENTER

(From Main) ENTER

(First Press) ENTER

(Second Press) ENTER

(Third Press) Description

Configuration — Control HYD — BACnet BACnet control—see BACnet section.

(continued) — Signals Hardwired Signal control.

— Setpoints On-board aquastat control—see SET-POINT CONTROL section.

— Outdoor Reset — Disable Disables Outdoor Reset functionality.

— Enable Enables Outdoor Reset functionality.

— Outdoor Ambient — Disable Disables Outdoor Ambient temperature.

— Enable Enables Outdoor Reset functionality.

— Setpoints Method — ICR Use Indoor Circulator Relay sampling.

— HTS/CTS Use external temperature sensors.

— Time Delays — Short Cycle Short-cycle timer delay in minutes.

— Units — Standard Standard units.

— Metric Metric units (does not affect calibration units).

— Set Time — Hours Set the system hours.

— Minutes Set the system minutes.

— Set Date — Day Set the system day.

— Month Set the system month.

— Year Set the system year.

Calibration — Suction 1 Suction Pressure. Calibration in 1PSI intervals.

— Discharge 1 Discharge Pressure Calibration in 1PSI intervals.

— Vapour Line 1 Suction line tempera-ture Calibration in 0.1°F intervals

— Outdoor Ambient Outside air tempera-ture Calibration in 0.1°F intervals

— Outdoor IN Temp Calibration in 0.1°F intervals

— Outdoor OUT Temp Calibration in 0.1°F intervals

— Indoor IN Temp Calibration in 0.1°F intervals

— Indoor OUT Temp Calibration in 0.1°F intervals

NOTE: Calibration is generally not required. Pressure sensors may be calibrated against a known source if needed. All temperature sensors have an Auto Calibration feature.


Units are shipped with the Control Source set to Setpoints as shown in the screenshot of the Configuration Page below. In order to prevent the compressor from starting when the power is first turned on, the system is DISABLED after factory testing is completed. The LCD display will show “SYSTEM DISABLED” when the system status display is shown. To enable the sys-tem, use either the System Enable/Disable button on the config-uration page (top right corner) or use the LCD menus and select SYSTEM ENABLE.

There are two categories of control methods for Setpoint

Control, one using the built-in sampling routine (Indoor Loop), and one using external sensors (HTS/CTS).

1. Setpoint Control Method - Indoor Loop

This is the default method and uses the Indoor OUT tem-perature probe inside the unit for temperature control. Its value is displayed in the Tank Temperature box on the Setpoint Con-trol screen. If this temperature shows NC, then either the probe is not connected to the board or there is a problem with it. The indoor circulator is used to sample the water temperature as described in the Indoor Circulator Operation section. Cooling mode is selected by making a dry contact connection between the R/RA and O terminals on the control board.

2. Setpoint Control Method - HTS/CTS In this method, the buffer tank temperature is continuously

monitored, rather than sampled, and the circulators are not run except while the compressor is running. It requires one or two external temperature sensors placed in dry wells in the buffer tank(s), as would be the case for a traditional aquastat control system. There are two ways to use HTS/CTS: heat pump mode and chiller mode.

Setpoint Control

a) HTS/CTS Method - Heat Pump Mode - One Tank

This method requires an external temperature sensor placed in a dry well near the top of the system buffer tank, as would be the case for a traditional aq-uastat control system. Its value is displayed in the Hot Tank box on the Setpoint Control screen. If this temperature shows NC, then either the probe is not connected to the board or there is a problem with it.

A 10K Type 7 (or Type 3) NTC thermistor along with a 10K 1% (or better) resistor must be connected to the control board in order to use the HTS/CTS meth-od. Connect the Hot Tank sensor to the AI_5 input as shown below. Remove the AI_5 jumper on the

control board. This sensor will be used for both heating and cool-ing mode. Cool-ing mode is se-lected by making a dry contact con-nection between the R/RA and O terminals on the control board.

CLICK ON UP/DOWN ARROWS

TO ADJUST VALUES

INDICATORS WILL TURN ON WHEN A

DEMAND OCCURS

RED—heating BLUE—cooling

Click on menu View—Setpoint Control to open the Setpoint Control screen, which looks like this for both of the preced-ing methods:

To adjust the setpoints and deltas, click on the up/down arrows. TABLES 7a & 7b show the recommended settings for both heating and cooling modes. Depending on the distribu-tion system, the heating setpoints may have to be set higher; the maximum value is 130°F (54°C) for W-series and 160°F (71°C) for WH-series. If the in-floor heating design is well done, the heating setpoints may be able to be lowered. They should be set to lowest value that still maintains an acceptable comfort level in order to achieve maximum system efficiency. Increasing Delta values will also increase efficiency due to longer runtimes and reduced number of compressor starts.

The minimum value for cooling with water as the indoor loop fluid is 45°F (7°C).


b) HTS/CTS Method - Heat Pump Mode - Two Tanks

This method requires an external temperature sensor placed in a dry well near the top of the system hot buffer tank, as well as one placed near the bot-tom of the system cold buffer tank. The readings are displayed in the Hot Tank box and Cold Tank box on the Setpoint Con-trol screen. If a temperature shows NC, then either the probe is not connected to the board or there is a problem with it.

Two 10K Type 7 (or Type 3) NTC thermistors along with 10K 1% (or better) resistors must be connected to the control board in order to use the 2-tank HTS/CTS method. Connect the hot tank sensor to the AI_5 input and the cold tank sensor to the AI_4 input as shown below. Remove the AI_5 and AI_4 jumpers on the control board.

WARNING: When using Manual Override mode, the activation will no longer respond to the Setpoint Control values (i.e. if a stage is on it will not turn off when the setpoint is reached). Go to the Control Panel to turn demand ON/OFF with the Stage buttons when in Manual Override Mode .

In this method, the hot tank sensor will be used for heat pump control in heating mode, and the cold tank sensor will be used for control in cooling mode. Cooling mode is selected by making a dry contact connection between the R/RA and O ter-minals on the control board.

Click on menu View—Setpoint Control to open the Set-point Control screen, which looks appears as at the top of the next column for the Two Tanks method.

To adjust the setpoints and deltas, click on the up/down arrows. TABLES 7a & 7b show the recommended settings for both heating and cooling modes. Depending on the distribu-tion system, the heating setpoints may have to be set higher; the maximum value is 130°F (54°C) for W-series and 160°F (71°C) for WH-series. If the in-floor heating design is well done, the heating setpoints may be able to be lowered. They should be set to lowest value that still maintains an acceptable comfort level in order to achieve maximum system efficiency. Increasing Delta values will also increase efficiency due to longer runtimes and reduced number of compressor starts.

The minimum value for cooling with water as the indoor loop fluid is 45°F (7°C).

TABLE 7a - Typical W-Series Temp. Setpoints HEATING


Setpoint 108 42 105 41 90 32 Delta 8 4 8 4 20 10 Activation * 100 38 97 37 70 22

Delay 10 minutes

COOLING


Setpoint 45 7 48 9 Delta 8 4 8 4 Activation * 53 11 56 13

TABLE 7b - Typical WH-Series Temp. Setpoints

HEATING


Setpoint 150 66 147 64 130 54 Delta 8 4 8 4 20 10 Activation * 142 62 139 60 110 44

Delay

COOLING


Setpoint 45 7 48 9 Delta 8 4 8 4 Activation * 53 11 56 13


10 minutes


c) HTS/CTS Method - Chiller Mode

This method requires an external temperature sensor placed in a dry well near the bot-tom of the system cold buffer tank. The reading is displayed in the Cold Tank box on the Set-point Control screen. If a tem-perature shows NC, then either the probe is not connected to the board or there is a problem with it.

A 10K Type 7 (or Type 3) NTC thermistor along with a 10K 1% (or better) resistor must be connected to the control board in order to use Chiller Mode. Con-nect Cold Tank sensor to AI_4 input as shown below. Remove the AI_4 jumper.

WARNING: When using Manual Override mode, the activation will no longer respond to the Setpoint Control values (i.e. if a stage is on it will not turn off when the setpoint is reached). Go to the Control Panel to turn demand ON/OFF with the Stage buttons when in Manual Override Mode .

Click on menu View—Setpoint Control to open the Setpoint Control screen, which looks like the following for Chiller Mode:

TABLE 8 - Typical Temperature Setpoints HTS/CTS Method-Chiller Mode

Stage 1 Stage 2

Item °F °C °F °C

Setpoint 45 7 48 9

Delta 8 4 8 4



Chiller Mode allows the heat pump to be controlled from the Outdoor Loop (cold side) rather than the Indoor Loop (hot side) for applications that require controlled cooling with high temp water rejection. The heat pump is still operating in “heating mode”; it is simply being started and stopped based on the cold side temperature.

To adjust the setpoints and deltas, click on the up/down arrows. TABLE 8 shows the default / recommended values. The minimum value with water as the indoor loop fluid is 45°F (7°C).

For all modes, the Setpoint Units button only affects the

Setpoint Control screen; it does not change the System Units. To change the System Units click on the System Units button at the top of the PC APP.


Indoor Circulator Operation The Indoor Circulator will operate any time the compressor

is on. When Setpoints Method is set to Indoor Loop (not HTS/CTS), the circulator will also cycle on and off when the com-pressor is not operating in order to sample the water tempera-ture of the tank. When the compressor stops, the circulator will continue to run for 30 seconds. It will then cycle with an OFF time and ON time as set by the Set ICR Sampling popup which appears when SET is clicked on the Setpoint Control Page. The timer counts downs the time remaining before the next switch between ON/OFF. The Indoor Circulator indicator will indicate when the circulator is ON, OFF or SAMPLING. The default sampling times are 2 minutes ON and 6 minutes OFF. The LCD Display will indicate when the ICR is sampling (ON) as well.

The Override Timer button will reduce the countdown timer

to 10 seconds.

Delta Adjustment.

Current Setpoint Val-ue based on outdoor temperature.

Row in use will be RED.

Outdoor Reset When using Setpoint Control (either Indoor Loop, or HTS/

CTS in Heat Pump mode), an optional Outdoor Reset control algorithm is available. This functionality reduces the heating temperature setpoints at warmer outdoor temperatures, as measured by an accessory 91-1980 outdoor temperature probe connected to HTS connector at top of control board (see wiring/SCH diagrams later in this manual). To use outdoor reset, go to the Configuration page and enable the sensor (if not done al-ready), then click on the Outdoor Reset button at the bottom of the Setpoint Control screen. The button will change to say Ena-bled, the indicator will come on, and the Outdoor Reset table will appear.

The current Heating Setpoints Adjustments will appear in the top row of the Outdoor Reset Table. The Delta Adjustments will remain where they were. The current Setpoint Value based on the outdoor temperature is displayed where the Setpoint Ad-justments were originally. The Outdoor Reset Table row in use based on outdoor temperature will turn red.

The Outdoor Reset Table is created by subtracting the value of the Outdoor Reset Factor from the original setpoints once for each table row . The original setpoints are located in table row 0 (<10F). The next row down equals the row above minus the Outdoor Reset Factor.

The original setpoints are the hottest temperature desired, while the calculated row setpoints will decrease as the outdoor temperature rises, and increase back towards the original set-points as the outdoor temperature drops. This improves system efficiency by maintaining a lower tank temperature when hotter tank temperatures are not needed due to the warmer weather.

Reset factor adjusts the temperature dif-ference between table rows.

Click on SET button to open Set ICR Sampling popup.

Outdoor Ambient Tem-perature. Optional 91-1980 sensor must be connected to HTS con-nector at top of control board and enabled on Configuration Page.

Change units of Setpoint Control only.

RED—Heating BLUE—Cooling


BACnet Interface The BACnet interface is an MS/TP connection via RS-485 twisted pair. There is a termination jumper if required to terminate the con-nection. It is located just above the BACnet connector, marked as TERM on the control board. The connector on the control board is a three wire removable screw connector. The signals are as follows: A: Communications line (+) (right pin) B: Communications line (-) (middle pin) C: Ground connection (left pin) Vendor: Maritime Geothermal Ltd. Vendor ID: 260 Model Name: MGT GEN2 Control Board

The following parameters can be set via the LED Display Configuration Menu or via the PC APP Configuration Page.

1) Baud rate 2) Instance number 3) MAC address

The data is available regardless of the selected control method. In order to control the unit via the BACnet interface, set the Control Source to BACnet either by using the PC APP configuration page or the display menus.

The following tables provide a list of the objects applicable to this model series, along with a description of each.

Note that there may be other objects available that do not apply to a particular heat pump model.

TABLE 9 - BACnet OBJECTS - CONTROL SIGNALS (READ/WRITE)

Name Data Type ID Property Description

SYSTEM_Y1A Binary Value BV0 Present Value Stage 1 - bottom compressor (active is on)

SYSTEM_Y2A Binary Value BV1 Present Value Stage 2 - top compressor (active is on)

SYSTEM_O Binary Value BV2 Present Value Switch both stages to cooling mode (RV#1 and RV#2). Inactive=HEATING, Active=COOLING

Note: object names may be subject to change without prior notice.

BACnet_Units Binary Value BV9 Present Value Select the units to use for the BACnet objects


TABLE 10 - BACnet OBJECTS - DATA (READ ONLY)

Name Data Type ID Property Units Description

LPS1 Analog Input AI6 Present Value PSIG (kPa) Stage 1 Low pressure value (suction pressure)

HPS1 Analog Input AI7 Present Value PSIG (kPa) Stage 1 High pressure value (discharge pressure)

EVAP1 Analog Input AI8 Present Value degF (degC) Stage 1 Evaporating Temperature

COND1 Analog Input AI9 Setpoint Value degF (degC) Stage 1 Condensing Temperature

Suction_Line1 Analog Input AI10 Present Value degF (degC) Stage1 Suction line temperature

Superheat1 Analog Input AI11 Setpoint Value degF (degC) Stage1 Superheat

EEV1_POS Analog Input AI12 Present Value % Stage 1 EEV position (% open)

LPS2 Analog Input AI13 Present Value PSIG (kPa) Stage 2 Low pressure value (suction pressure)

HPS2 Analog Input AI14 Present Value PSIG (kPa) Stage 2 High pressure value (discharge pressure)

EVAP2 Analog Input AI15 Present Value degF (degC) Stage 2 Evaporating Temperature

COND2 Analog Input AI16 Setpoint Value degF (degC) Stage 2 Condensing Temperature

Suction_Line2 Analog Input AI17 Present Value degF (degC) Stage 2 Suction line temperature

Superheat2 Analog Input AI18 Setpoint Value degF (degC) Stage 2 Superheat

EEV2_POS Analog Input AI19 Present Value % Stage 2 EEV position (% open)

Outside_Temp Analog Input AI20 Present Value degF (degC) Outdoor Ambient temperature—ACCESSORY

O_IN Analog Input AI21 Present Value degF (degC) Indoor IN temperature

O_OUT Analog Input AI22 Present Value degF (degC) Indoor OUT temperature

I_IN Analog Input AI23 Present Value degF (degC) Indoor IN temperature

I_OUT Analog Input AI24 Present Value degF (degC) Indoor OUT temperature

Comp1_Current Analog Input AI0 Present Value A Stage1 compressor current draw (AI0)

Comp2_Current Analog Input AI1 Present Value A Stage2 compressor current draw (AI1)

AI_2 Analog Input AI2 Present Value User Selectable User defined (0-5VDC or 4-20mA)




PWM_IN Analog Value AV0 Present Value % PWM input (from external source)

PWM1 Analog Value AV1 Present Value % PWM output value (spare)

PWM2 Analog Value AV2 Present Value % PWM output value (spare)

PWM3 Analog Value AV3 Present Value % OV2 - PWM or 0-10VDC for Outdoor Loop water valve

PWM4 Analog Value AV4 Present Value % IV2 - PWM or 0-10VDC for Indoor Loop water valve

STAGE1 Binary Output BO0 Present Value N/A Compressor#1 contactor

STAGE2 Binary Output BO1 Present Value N/A Compressor#2 contactor

ICR Binary Output BO2 Present Value N/A Indoor circulator control

DO_0 Binary Output BO3 Present Value N/A OV1 (for 24VAC Outdoor Loop water valve)

DO_1 Binary Output BO4 Present Value N/A IV1 (for 24VAC Indoor Loop water valve)

HYD_AUX Binary Output BO5 Present Value N/A Hydronic Auxiliary

DO_3 Binary Output BO6 Present Value N/A Hydronic Auxiliary Only (without compressor)

PHS_1 Binary Output BO7 Present Value N/A Dry contact lockout pin for Stage 1

PHS_2 Binary Output BO8 Present Value N/A Dry contact lockout pin for Stage 2

Outdoor Flow Binary Value BV10 Present Value N/A Outdoor Loop flow switch

Indoor Flow Binary Value BV11 Present Value N/A Indoor Loop flow switch

Phase Monitor1 Binary Value BV12 Present Value N/A Phase Monitor Stage 1

Phase Monitor2 Binary Value BV13 Present Value N/A Phase Monitor Stage 2 Comp_Monitor1 Binary Value BV14 Present Value N/A Compressor Monitor Stage 1

Comp_Monitor2 Binary Value BV15 Present Value N/A Compressor Monitor Stage 2

Note: available objects may be subject to change without prior notice.


TABLE 11 - BACnet OBJECTS - ALARMS AND FAULTS (READ ONLY)

Name Data Type ID Alarm / Fault Description

LPS1 Analog Value AI6 Alarm Low pressure alarm Stage 1.

HPS1 Analog Value AI7 Alarm High pressure alarm Stage 1

LPS2 Analog Value AI13 Alarm Low pressure alarm Stage 2.

HPS2 Analog Value AI14 Alarm High pressure alarm Stage 2.

Outdoor Flow Binary Value BV10 Alarm Outdoor Loop flow alarm.

Indoor Flow Binary Value BV11 Alarm Indoor Loop flow alarm.

Phase Monitor1 Binary Value BV12 Alarm Phase Monitor alarm Stage 1.

Phase Monitor2 Binary Value BV13 Alarm Phase Monitor alarm Stage 2.

Comp_Monitor1 Binary Value BV14 Alarm Compressor Monitor alarm Stage 1.

Comp_Monitor2 Binary Value BV15 Alarm Compressor Monitor alarm Stage 2.

PERM_ALARMS1 Binary Value BV16 Alarm Indicates a permanent alarm for Stage 1.

PERM_ALARMS2 Binary Value BV17 Alarm Indicates a permanent alarm for Stage 2.

LPS1 Analog Value AI6 Fault Low pressure sensor faulty or disconnected Stage 1.

HPS1 Analog Value AI7 Fault High pressure sensor faulty or disconnected Stage 1.

LPS2 Analog Value AI13 Fault Low pressure sensor faulty or disconnected Stage 2.

HPS2 Analog Value AI14 Fault High pressure sensor faulty or disconnected Stage 2.

Suction_Line1 Analog Value AI10 Fault Suction line 1 temperature sensor faulty or disconnected.

Suction_Line2 Analog Value AI17 Fault Suction line 2 temperature sensor faulty or disconnected.

Outside_Temp Analog Value AI20 Fault Outside temperature sensor faulty or disconnected (ACCESSORY).

O_IN Analog Value AI21 Fault Outdoor IN temperature sensor faulty or disconnected.

O_OUT Analog Value AI22 Fault Outdoor OUT temperature sensor faulty or disconnected.

I_IN Analog Value AI23 Fault Outdoor IN temperature sensor faulty or disconnected.

I_OUT Analog Value AI24 Fault Outdoor OUT temperature sensor faulty or disconnected.

Note: objects may be subject to change without prior notice.


The W/WH-Series Startup Record located in this manual is used in conjunction with this startup procedure to provide a detailed record of the installation. A completed copy should be left on site, a copy kept on file by the installer, and a copy should be sent to Maritime Geothermal Ltd..

Check the boxes or fill in the data as each step is completed. For data boxes, circle the appropriate units. Fill in the top section of all three copies, or one copy if photocopies can be made after the startup has been completed. Pre-Start Inspection Indoor Loop (Hydronic Loop):

1. Verify that all shutoff valves are fully open and there are no restrictions in the piping from the heat pump to the indoor loop, and that full flow is available to the heat pump. 2. Verify that the entire system has been flooded and all the air has been purged as much as possible. Further purging may be required after the system has been operating for a while. 3. Verify that the loop contains the proper mix of antifreeze (if used) for the intended application. If applicable, record the type of antifreeze and the mixture value on the startup sheet, circle % Vol. or % Weight. 4. Record the static loop pressure on the startup sheet.

Outdoor Loop (Ground Loop):

1. Verify that all shutoff valves are fully open and there are no restrictions in the piping from the heat pump to the ground loop, and that full flow is available to the heat pump. 2. Verify that the entire system has been flooded and all the air has been purged as much as possible. Further purging may be required after the system has been operating for a while. 3. Verify that the loop contains the proper mix of antifreeze for the intended application. Record the type of antifreeze and the mixture value on the startup sheet; circle % Vol. or % Weight. 4. Record the static loop pressure on the startup sheet.

Outdoor Loop (Ground Water):

1. Verify there are no leaks in the connections to the unit. Verify the water valve is installed and properly oriented in the return line. 2. Verify that there is flow control in the return line.

Electrical:

1. Ensure the power to the unit is off. 2. Verify all high voltage connections. Ensure that there are no stray wire strands, all connections are tight, and the ground wire is connected tightly to the ground connector.

3. Record the circuit breaker size and wire gauge for the heat pump. 4. Verify that the control connections to the unit are properly connected and all control signals are off, so that the unit will not start up when the power is turned on. 5. Verify that the circulator pumps are connected to the proper voltages. Record the voltages of the circulator pumps.

6. Ensure all access panels except the one that provides access to the electrical box are in place.

Startup Procedure


Unit Startup The unit is now ready to be started. The steps below outline the procedure for starting the unit and verifying proper operation of the unit. It is recommended that safety glasses be worn during the following procedures. IMPORTANT NOTE: The unit is shipped as System Disabled in order to prevent the unit from starting when the power is first turned on. When ready to start the unit change the Control Source to the desired source with the PC APP or through the LCD menus and then enable the system. The LCD display will show the outdoor temperature (if available), low (suction) pressure, high (discharge) pressure, super-heat, EEV position and water in/out temperatures.

Preparation:

1. Turn the power on to the heat pump and set the all controls to OFF. All LED’s on the control board should turn on, the LCD display should say “MGT GEN2 VERx.xx” on line 1 and “Zeroing EEV’s” on line 2. You should be able to hear the EEV mov-ing (a clicking sound).

2. Measure the following voltages on the compressor contactor and record them on the startup sheet: L1-L2, L2-L3, L1-L3. 3. Connect a USB cable between the USB connector on the board and a laptop. 4. Select the desired Control Source HYD via the PC APP or Configuration Menu. (NOTE: compressor will start on its own if Setpoints is selected). 5. Enable the system either from the Configuration Page of the PC APP or through the menu buttons.

Heating Mode: 1. Activate Stage 1 and Stage 2. The EEVs will begin to open and the compressor will start, as will the circulator pumps. 2. Check the PC APP or LCD Display. The suction and discharge pressures will vary based on the outdoor and indoor loop tem-

perature, but they should be about 90-110PSIG and 260-360PSIG respectively for a typical start-up. 3. Monitor the unit via the PC APP or LCD Display while the unit runs, and record the following after 10 minutes of run time:

1. Suction pressure (both stages) 2. Discharge pressure (both stages) 3. Indoor Loop In (Hot In) temperature 4. Indoor Loop Out (Hot Out) temperature 5. Indoor Delta T (should be 8-12°F, 4-6°C) 6. Indoor flow (if available) 7. Outdoor Loop In (Supply In) temperature 8. Outdoor Loop Out (Supply Out) temperature 9. Outdoor Delta T (should be 5-8°F, 3-4°C) 10. Outdoor flow (if available) 11. Compressor L1(C) current (black wire, place meter between electrical box and compressor)

4. Adjust the control setpoints to the desired buffer tank temperature and let the unit run through a cycle. Record the setpoint and the discharge pressure just before the unit shuts off. Cooling Mode: 1. Set the unit to cooling mode and adjust the cooling control setpoints to activate Stage 1 and Stage 2. 2. Monitoring the unit via the PC APP or LCD display while the unit runs, and record the following after 10 minutes of run time:

1. Suction pressure (both stages) 2. Discharge pressure (both stages) 3. Indoor Loop In temperature 4. Indoor Loop Out temperature 5. Indoor Delta T 6. Outdoor Loop In (Supply In) temperature 7. Outdoor Loop Out (Supply Out) temperature 8. Outdoor Delta T

3. Adjust the cooling control setpoints to the desired tank temperature, and allow the unit to run through a cycle. Record the setpoints and the suction pressure when the unit shuts off. Final Inspection:

1. Turn the power off to the unit and remove all test equipment. 2. Install the electrical box cover and the access panel on the heat pump. Install the service port caps securely to prevent refrigerant loss. 3. Do a final check for leaks in the Indoor Loop piping and ensure the area is clean. 4. Turn the power on to the unit. Set the Setpoints Control (or aquastat) to the final settings and record the values.

Startup Record: 1. The startup personnel shall sign and date the Startup Record and have the startup witness or appropriate site personnel sign as well. The startup personnel shall leave the Startup Record with the homeowner, retain a copy for filing and send a copy to Maritime Geothermal Ltd. for warranty registration.


Startup Record Sheet - Commercial W/WH-Series

Installation Site Startup Date Installer

City Company

Province Check boxes unless asked to record data.

Circle data units.

Model

Country Serial #

Client Name Site Owner Phone #

PRE-START INSPECTION Indoor Loop (Hydronic)

All shut-off valve are open (full flow available)

Loop is full and purged of air

Antifreeze type

Antifreeze concentration % Volume % Weight

Loop static pressure psig kPa

Ground Loop System

All shut-off valve are open (full flow available)

Loop is full and purged of air

Loop static pressure psig kPa

Ground Water System

Water valve installed in return line

Flow control installed in return line

Electrical High voltage connections are correct and securely fastened

Circuit breaker (or fuse) size and wire gauge for Heat Pump A Ga.

Circulator pump voltages (Outdoor 1, Outdoor 2, Indoor 1) V V V

Low voltage connections are correct and securely fastened

STARTUP DATA

Preparation Voltage across L1 and L2, L1 and L3, L2 and L3 VAC

Heating Mode (10 minutes)

Stage 1 Suction Pressure / Discharge Pressure psig kPa

Indoor In (Hot In), Indoor Out (Hot Out), and Delta T In Out °F °C

Outdoor In (Supply In), Outdoor Out (Supply Out), and Delta T In Out °F °C

Outdoor Flow igpm gpm L/s

Compressor L1 (black wire) current A

Heating setpoint and discharge pressure at cycle end °F °C psig kPa

Cooling Mode (HAC only) (10 minutes)


Indoor In (Hot In), Indoor Out (Hot Out), and Delta T In Out °F °C

Outdoor In (Supply In), Outdoor Out (Supply Out), and Delta T In Out °F °C

Cooling setpoint and suction pressure at cycle end °F °C psig kPa

Final Control Set-tings

Heating S1 Setpoint, S1 Delta °F °C

Heating S3 Setpoint, S3 Delta, S3 Time Delay °F °C min

Cooling S2 Setpoint, S2 Delta °F °C



Heating S2 Setpoint, S2 Delta °F °C

Cooling S1 Setpoint, S1 Delta °F °C

Date: Startup Personnel Signature:

Witness/Site Signature:

A total of three copies are required, one for the site, one for the installer/startup and one to be sent to Maritime Geothermal Ltd.


GENERAL MAINTENANCE SCHEDULE Item Interval Procedure

Contactor 1 year Inspect for pitted or burned points. Replace if necessary.

Heat exchanger As required* Clean as per HEAT EXCHANGER FLUSING PROCEDURE below.

*Generally not required for closed loop systems. Whenever system performance is reduced for open loop.

General Maintenance

HEAT EXCHANGER FLUSHING PROCEDURE - GROUNDWATER

STEP 1 Isolate the heat exchanger by closing the valves in the IN and OUT ports to the heat exchanger.

STEP 2 Blow out the heat exchanger into a clean 5 gallon bucket using compressed air.

STEP 3 If a purge cart is not available, use a 5 gallon plastic bucket, a circulator and some plastic piping to create a makeshift pump system. Connect at the inlet and outlet to the heat exchanger ports.*

STEP 4 Place 2 gallons of RYDLYME or equivalent in the purge cart (or bucket). Circulate the fluid through the heat exchanger for at least 2 hours (3 recommended).

STEP 5 Disconnect the purge system dispose of the solution. RYDLYME is non-toxic and biodegradable and as such can be poured down a drain.

*Depending on the plumbing, there should be either unions or boiler drains for to access the heat exchanger.

STEP 6 Connect fresh water and a drain to the heat exchanger ports and flush the exchanger for several minutes.

STEP 7 Return the plumbing to its original configuration and open the IN and OUT valves. Operate the system and check for improved performance.

HEAT EXCHANGER FLUSHING PROCEDURE - GROUND LOOP

STEP 1 Isolate the heat exchanger by placing the pump module valves in the exchanger flushing position.

STEP 2 Connect a compressed air and a drain pipe to the pump module purge ports and blow the anti-freeze solu-tion into a clean 5 gallon bucket.

STEP 3 Connect a purge cart to the pump module purge ports.

STEP 4 Place 2 gallons of RYDLYME or equivalent in the purge cart. Circulate the fluid through the heat exchanger for at least 2 hours (3 recommended).

STEP 5 Disconnect the purge cart and dispose of the solution. RYDLYME is non-toxic and biodegradable and as such can be poured down a drain. Clean the purge cart thoroughly.

*Depending on the plumbing, there should be either unions or boiler drains for to access the heat exchanger.

STEP 6 Connect fresh water and a drain to the pump module purge ports and flush the exchanger for several minutes.

STEP 7 Blow the heat exchanger out with compressed air as per STEP 2 and dump the water down a drain.

STEP 8 Connect the purge cart to the pump module purge ports. Re-fill and purge the heat exchanger with as per standard procedures (the anti-freeze from STEP 2 can be re-used).

STEP 9 Disconnect the purge cart and set the pump module valves back to the original positions.

STEP 10 Operate the system and check for improved performance.


POWER SUPPLY TROUBLESHOOTING

Fault Possible Cause Verification Recommended Action

No power to the heat pump

Disconnect switch open (if installed).

Verify disconnect switch is in the ON position.

Determine why the disconnect switch was opened, if all is OK close the switch.

Fuse blown / breaker tripped.

At heat pump disconnect box, voltmeter shows 230VAC on the line side but not on the load side.

Reset breaker or replace fuse with proper size and type. (Time-delay type “D”)

Faulty control board. 24VAC is present across 24VAC and COM of the control board.

Replace the control board.

Faulty wiring between heat pump and aquastat.

24VAC is not present across 24V and COM of the aquastat.

Correct the wiring.

Faulty aquastat. 24VAC is present across COM and 24V of the aquastat but aq-uastat has no display.

Replace aquastat.

No display on aquastat (if used)

No power from transform-er.

See No heartbeat on control board.

Faulty transformer. Transformer breaker is not tripped (or fuse not blown), 230VAC is present across L1 and L3 of the compressor contactor but 24VAC is not present across 24VAC and COM of the control board.

Replace transformer.

No heartbeat on control board

Transformer breaker tripped (or fuse blown for those without breaker).

Breaker on transformer is sticking out (or fuse looks burnt).

Push breaker back in. If it trips again locate cause of short circuit and correct (or replace fuse) .

The following steps are for troubleshooting the heat pump. Repair procedures and reference refrigeration circuit dia-grams can be found at the end of the troubleshooting guide. STEP 1: Verify that the LCD Display is functioning . If it is not, proceed to POWER SUPPLY TROUBLE SHOOTING, otherwise pro-

ceed to STEP 2. STEP 2: Record the alarm shown on the LCD Display or use the PC APP Alarms page to determine the alarm type. Proceed to the

ALARMS TROUBLESHOOTING section. STEP 3: If there are no alarms and STAGE1 is showing as on (LCD Display, PC APP or LED on control board) but the compressor is

not operating, does not attempt to start, attempts to start but cannot, starts hard, or starts but does not sound normal, pro-ceed to the COMPRESSOR TROUBLESHOOTING section.

STEP 4: If the compressor starts and sounds normal, this means the compressor is most likely OK. Proceed to the OPERATION

TROUBLESHOOTING section. NOTE: To speed up the troubleshooting process, if using the PC Application, click on SC Override to reduce the short cycle timer to

10 seconds.

Troubleshooting Guide


ALARMS AND FAULTS TROUBLESHOOTING

Alarm/Fault Description Recommended Action

The following is a description of the alarms along with what to do when they occur. The data logging function of the GEN2 Control Board is a very useful tool for troubleshooting alarms. It provides a history of the unit operation up to and including the time at which the alarm(s) occurred. Alarms and faults that are not applicable to the unit will be greyed out on the Alarms page of the PC APP. Note that some alarms require accessory components. The LCD display will also indicate alarms and faults. Look up the alarm/fault in the table below and proceed to the appropriate section of the trou-bleshooting guide.

Low Pressure (Stage 1 or Stage 2)

A low pressure alarm occurs when the suction pressure drops to or below the Low Pressure Cutout value. The low pressure is checked just before a compressor start; if it is OK the compres-sor will start, otherwise an alarm will occur. When the compres-sor starts, the low pressure alarm will be ignored for the number of seconds that Low Pressure Ignore is set to, after which the low pressure alarm will be re-enabled. This allows a dip in suction pressure below the cutout point during startup without causing a nuisance alarm.

Go to the Low Pressure sec-tion of the mode the unit was operating in at the time of the alarm.

High Pressure (Stage 1 or Stage 2)

A high pressure alarm occurs when the discharge pressure rises to or above the High Pressure Cutout Value.

Go to the High Pressure sec-tion of the mode the unit was operating in at the time of the alarm.

Compressor Monitor (Stage 1 or Stage 2)

This alarm occurs when the compressor protection module sends a fault signal to the control board, generally due to the compressor windings overheating.

Check contactor if compres-sor is staying on when it should be off. Go to Com-pressor section if compressor is not on when it should be.

Compressor Status (Stage 1 or Stage 2)

This alarm occurs when there is a current draw on the compres-sor but no call for the compressor to be on (i.e. welded contactor) or when there is a call for the compressor to be on but there is no compressor current draw (i.e. manual high pressure control is open or contactor failure).

Check contactor if compres-sor is staying on when it should be off. Go to Com-pressor section if compressor is not on when it should be.

Phase Monitor (Stage 1 or Stage 2)

This alarm occurs when the phase monitor detects a fault condi-tion and sends a fault signal to the control board. For three phase units only.

Verify power supply for under/over voltages as well as phase balance. Check com-pressor contactors for pits or burns.

Loss of Charge (Stage 1 or Stage 2)

This alarm occurs if both the low pressure and high pressure sensors are below 30 psig (207 kPa).

Check system for refrigerant leak.

Outdoor Flow This alarm is ignored on compressor start for the number of sec-onds the Outdoor Flow Ignore on Start is set to. Alarm monitor-ing will begin when the timer expires.

Check outdoor flow switch. Check outdoor loop flow.

Indoor Flow This alarm is ignored on compressor start for the number of sec-onds the Indoor Flow Ignore on Start is set to. Alarm monitoring will begin when the timer expires.

Check indoor flow switch. Check indoor loop flow.


ALARMS AND FAULTS TROUBLESHOOTING

Alarm/Fault Description Recommended Action

The following are the control board hardware faults (Board Faults).

Digital Inputs A failure has occurred and the control board may no longer respond to the digital input signals.

Cycle the power a few times, if the fault persists replace the control board.

Digital Outputs A failure has occurred and the digital outputs may no longer work properly.


PWM Outputs A failure has occurred and the PWM / 0-10VDC outputs may no longer work properly.


Analog to Digital A failure has occurred and the data from the A/D converter may be corrupt resulting in erratic data values.


Real Time Clock A failure has occurred: system time / date may no longer be valid, and all time stamped data may be corrupt.


Flash Memory A failure has occurred stored data may be corrupt. It may be possible to correct this by using the menu item Tools—Reset to Factory Defaults. If this clears the fault then the sys-tem configuration will have to be set up again.

Menu Buttons A failure has occurred and the control board may no longer respond to menu button key presses.

Try turning off the power, dis-connecting and reconnecting the cable between the LCD display board and the control board and then turning the power back on again. If this does not work then either the LCD display board, the cable or the driver section of the control board may be faulty.

LCD Display A failure has occurred and display may show erratic data, no data, or may not turn on at all.

Try turning off the power, dis-connecting and reconnecting the cable between the LCD display board and the control board and then turning the power back on again. If this does not work then either the LCD display board, the cable or the driver section of the control board may be faulty.

Temperature Sensors

The sensor is reading outside of the acceptable range. Check to ensure connector is on securely.

Replace the temperature sensor. If this does not rectify the prob-lem replace the control board.


COMPRESSOR TROUBLESHOOTING


Compressor will not start

Faulty control board. No 24vac output on STAGE1 when compressor should be operating.

Replace control board.

Faulty run capacitor. (Single phase only)

Check value with capacitance meter. Should match label on capacitor. Compressor will hum while trying to start and then trip its overload.

Replace if faulty.

Loose or faulty wiring. Check all compressor wiring, includ-ing inside compressor electrical box.

Fix any loose connections. Re-place any damaged wires.

Faulty compressor contactor.

Voltage on line side with contactor held closed, but no voltage on one or both terminals on the load side. Points pitted or burned. Or, 24VAC across coil but contactor will not engage.

Replace contactor.

Thermal overload on compressor tripped.

Ohmmeter shows reading when placed across R and S terminals and infinity between C & R or C & S. A valid resistance reading is present again after the compressor has cooled down.

Proceed to Operation Trouble-shooting to determine the cause of the thermal overload trip.

Burned out motor (open winding)

Remove wires from compressor. Ohmmeter shows infinite resistance between any two terminals Note: Be sure compressor overload has had a chance to reset. If compressor is hot this may take several hours.

Replace the compressor.

Burned out motor (shorted windings)

Remove wires from compressor. Resistance between any two termi-nals is below the specified value.

Replace the compressor.

Motor shorted to ground. Remove wires from compressor. Check for infinite resistance be-tween each terminal and ground.

If any terminal to ground is not infinite replace the compressor.

Seized compressor due to locked or damaged mechanism.

Compressor attempts to start but trips its internal overload after a few seconds. (Run capacitor already verified for single phase units.)

Attempt to “rock” compressor free. If normal operation cannot be established, replace compressor.

Compressor starts hard

Start capacitor faulty. (Single phase only)

Check with capacitance meter. Check for black residue around blowout hole on top of capacitor.

Replace if faulty. Remove black residue in electrical box if any.

Potential Relay faulty. (Single phase only)

Replace with new one and verify compressor starts properly.

Replace if faulty.

Compressor is “tight” due to damaged mechanism

Compressor attempts to start but trips its internal overload after a few seconds. Run capacitor has been verified already.

Attempt to “rock” compressor free. If normal operation cannot be es-tablished, replace compressor.


OPERATION TROUBLESHOOTING - HEATING MODE


High or Low Suc-tion or Discharge Pressure

Faulty sensor. Compare pressure sensor reading against a known reference such as a new refrigeration manifold set.

Check wiring, replace sensor. If problem persists replace control board.

High Discharge Pressure

Low Indoor Loop flow rate. Verify that indoor delta T is 8-12°F (4-7°C)

Increase flow rate if new installation, check for fouled heat exchanger if existing installation.

Temperature setpoint(s) too high (if using external sig-nals or BACnet control)

Use PC APP to verify that Indoor OUT does not exceed 130°F (54°C) for W-series or 160°F (71°C) for WH-series.

Reduce setpoint(s).

EEV stuck almost closed or partially blocked by foreign object.

Manually adjusting the EEV does not affect the superheat or the suction pressure. Low super heat and dis-charge pressure.

Go to EEV troubleshooting section.

Filter-dryer plugged.

Feel each end of the filter-dryer; they should be the same temperature. If there is a temperature difference then it is plugged. Also causes low suction pres-sure.

Replace filter-dryer.

Unit is overcharged.

High sub-cooling, low indoor loop delta T.

Remove 1/2 lb of refrigerant at a time and verify that the discharge pressure gets lower.

Low Suction Pressure

Indoor OUT temperature too cold (on startup or if unit has been off for extended period).

Ensure Indoor OUT temperature is above the low limit indicated in the Model Specific Information section.

Reduce flow temporarily until Indoor OUT temperature has risen suffi-ciently.

Low or no outdoor liquid flow.

Delta T across the Outdoor Loop ports should be 5-7°F (3-4°C), or compare pressure drop to the tables for the unit.

Determine the cause of the flow restriction and correct it. Verify pumps are working and sized correctly for ground loop systems. Verify well pump and water valve is working for ground water systems.

TS1 (or TS2) temperature sensor not reading proper-ly.

If the sensor is reading low, the super-heat will appear high, which causes the EEV to continually close.

Verify EEV position is low compared to normal. Check temperature sen-sor, replace if necessary.


Feel each end of the filter-dryer; they should be the same temperature. If there is a temperature difference then it is plugged. Also causes low suction pres-sure.



Manually adjusting the EEV does not affect the superheat or the suction pressure. Low super heat and dis-charge pressure.


Low refrigerant charge. Superheat is high, EEV position is high. Locate the leak and repair it. Spray Nine, a sniffer, and/or dye are com-mon methods of locating a leak.

Dirty or fouled brazed plate heat exchanger. (typically for open loop, less likely for ground loop)

Disconnect the water lines and check the inside of the pipes for scale depos-its.

Backflush the heat exchanger with a calcium-removing cleaning solution.

Entering liquid temperature too cold.

Measure the entering liquid tempera-ture. Most likely caused by undersized ground loop.

Increase the size of the ground loop.


OPERATION TROUBLESHOOTING - COOLING MODE


Heating instead of cooling (units with reversing valve only)

Thermostat or external con-trol system not set up properly.

Verify that there is 24VAC across O and C/CA of the aquastat strip on control board when calling for cool-ing.

Correct thermostat or external control system setup.

Faulty reversing valve sole-noid coil or motorized actu-ator.

Verify solenoid by removing it from the shaft while the unit is running. There should be a loud “whoosh” sound when it is removed. Or for motorized actuator, verify shaft ro-tates 90° when changing modes.

Replace solenoid or motorized actu-ator if faulty.

Faulty or stuck reversing valve.

A click can be heard when the coil is energized but the unit continues to heat instead of cool, or shaft will not turn.

Replace reversing valve.

High Discharge pressure

Low or no outdoor liquid flow.

Delta T across the outdoor loop ports should be 8-12°F (4-7°C), or com-pare pressure drop to the tables for the unit.

Determine the cause of the flow re-striction and correct it. Verify pumps are working for ground loop systems. Verify well pump and water valve is working for ground water systems.

Entering liquid temperature too warm.

Most likely caused by undersized ground loop.

Verify the ground loop sizing. In-crease the size of the ground loop if undersized.

Dirty or fouled brazed plate heat exchanger. (typically for open loop, less likely for ground loop)

Disconnect the water lines and check the inside of the pipes for scale deposits.

Backflush the heat exchanger with a calcium-removing cleaning solution.

OPERATION TROUBLESHOOTING - HEATING MODE


Compressor frosting up

See Low Suction Pressure in this section.

EEV frosting up EEV stuck almost closed or partially blocked by foreign object.

Manually adjusting the EEV does not affect the superheat or the suction pressure. Low superheat and dis-charge pressure.


Random high pressure trip (may not occur while on site)

Faulty indoor circulator relay.

Using the PC APP, manually turn the ICR on/off several times and ensure the circulator(s) start and stop.

Replace relay.

Random manual high pressure trip (may not oc-cur while on site)

Faulty compressor contac-tor.

Points pitted or burned. Contactor sometimes sticks causing the com-pressor to run when it should be off.

Replace contactor.

Faulty compressor, not pumping.

Pressures change only slightly from static values when compressor is started.

Replace compressor.

Leaking reversing valve (if present).

Reversing valve is the same tempera-ture on both ends of body, common suction line is warm, compressor is running hot.


High Suction Pressure (may appear to not be pumping)

EEV stuck open. Manually adjusting the EEV does not affect the superheat or the suction pressure. Low superheat and dis-charge pressure.



OPERATION TROUBLESHOOTING - COOLING MODE


High Discharge pressure (continued)


Feel each end of the filter-dryer; they should be the same temperature. If there is a temperature difference then it is plugged. Also causes low suction pressure.


Unit is overcharged.

High subcooling. Remove 1/2lb of refrigerant at a time and verify that the discharge pressure reduces.

High Suction Pressure (may appear to not be pumping)

EEV stuck open. Manually adjusting the EEV does not affect the superheat or the suction pressure. Low super heat and dis-charge pressure.


Leaking reversing valve. Reversing valve is the same temper-ature on both ends of body, common suction line is warm, compressor is running hot.


Faulty compressor, not pumping.

Pressures change only slightly from static values when compressor is started.

Replace compressor.

Low Suction Pressure

Low indoor loop liquid flow. Check for high delta T with the PC APP. The EEV will be at a lower position than normal as well.

Correct the problem.




TS1 (or TS2) temperature sensor not reading proper-ly.

If the sensor is reading low it will cause the superheat to appear high, which causes the EEV to continually close.

Verify EEV position is low compared to normal. Check temperature sensor, replace if necessary.


Feel each end of the filter-dryer; they should be the same temperature. If there is a temperature difference then it is plugged. Also causes low suction pressure.


Low or no refrigerant charge.

Entering water temperature and flow are good but suction is low. Check static refrigeration pressure of unit for low value.

Locate the leak and repair it. Spray Nine, a sniffer, and dye are common methods of locating a leak.

Compressor frosting up

See Low Suction Pressure in this section.

EEV frosting up EEV stuck almost closed or partially blocked by foreign object.



Random manual high pressure trip (may not occur while on site)

Faulty compressor contac-tor.

Points pitted or burned. Contactor sometimes sticks causing the com-pressor to run when it should be off.

Replace contactor.


EEV TROUBLESHOOTING

If there is a refrigeration problem such as low charge, plugged filter-dryer, EEV stuck, or any other kind of restriction in the refrigeration system, the apparent EEV position will work its way towards 100% (full open). High superheat is also a symptom. If an EEV is not working and is stuck partway open, the apparent EEV position will work its way either to 100% or to the 10% minimum. If there is low suction and the EEV position is also low then the problem is generally not in the refrigeration system; check the water or air flow of the indoor or outdoor loop, whichever is currently being used as the source (evaporator). To determine if an EEV is working, use the PC APP and put the system in manual override mode. Manually adjust the EEV position by at least 25% either up or down and check to see that the suction pressure, discharge pressure and su-perheat react to the change. If there is no reaction, then it is likely that the EEV is not working or is stuck. There are 3 possibilities: the control board is not working properly, the cable is faulty, or the EEV is faulty. Set the EEV back to AUTO and then turn the heating or cooling demand off (but leave power on). Once the demand is off, if the EEV is working then the discharge pressure should remain significantly higher than the suction pressure, i.e. the system will not equalize (since EEV’s are closed when there is no demand). If the system does equalize it is likely that the EEV is not working and is partially open. Manually set the EEV to 25% and wait for it to stop. Set the EEV to –1, this will cause it to overdrive. You should hear the valve clicking and then the clicking should change and get louder when the valve bottoms out. If there is no clicking sound then either the control board is faulty, or the cable is faulty. The simplest method to check this is to connect a new EEV and cable to the control board and visually check the EEV so see if it opens and closes by setting the position o 0 and 100% If the new EEV works then the EEV in the unit needs to be replaced. 1) Connect a test EEV and test cable to the control board. 2) Set the EEV position to 0%. 3) Set the EEV position to 100% and then listen for clicking and watch to see if the pintle in the EEV moves open. 4) Set the EEV position to 0% and then listen for clicking and watch to see if the pintle in the EEV moves closed. 5) If the EEV does not move in one or both directions then the control board must be replaced. 6) If the test EEV moves in both directions then then either the cable or the EEV in the unit is faulty. 7) Disconnect the test EEV from the test cable and connect it to the cable in the unit. 8) Repeat steps 2 to 4. 9) If the test EEV moves in both directions then the EEV in the unit is faulty and must be replaced. 10) If the test EEV does not move in one or both directions then the cable must be replaced.


DOMESTIC HOT WATER (DESUPERHEATER) TROUBLESHOOTING Fault Possible Cause Verification Recommended Action

Insufficient hot water (Tank Problem)

Thermostat on hot water tank set too low. Should be set at 120°F. (140°F if required by local code)

Visually inspect the setting. Adjust the setting.

Breaker tripped, or fuse blown in electrical supply to hot water tank.

Check both line and load sides of fuses. If switch is open determine why.

Replace blown fuse or reset breaker.

Reset button tripped on hot water tank.

Check voltage at elements with multimeter.

Push reset button.

Circulator pump seized or motor failed.

Use an amprobe to measure current draw.

Replace if faulty.

Blockage or restriction in the water line or hot water heat exchanger.

Check water flow and power to pump. Check water lines for obstructions.

Remove obstruction in water lines. Acid treat the domestic hot water coil.

Faulty DHW cutout (failed open).

Check contact operation. Should close at 120°F and open at 140°F.

Replace DHW cutout if faulty.

Heat pump not running enough hours to make sufficient hot water.

Note the amount of time the heat pump runs in any given hour.

Temporarily turn up the tank thermostats until colder weather creates longer run cycles.

Water is too hot. Faulty DHW cutout (failed closed).

Check contact operation. Should close at 120°F and open at 140°F.

Replace DHW cutout if faulty.

Thermostat on hot water tank set too high. Should be set at 120°F. (140°F if required by local code)

Visually inspect the setting. Adjust the setting.

Insufficient hot water (Heat Pump Problem)

Digital Refrigeration

In-line Flowmeter

Multimeter - Voltmeter /

Troubleshooting Tools


PUMP DOWN PROCEDURE STEP 1 Connect the refrigerant recovery unit to the heat pump service ports via a refrigeration charging manifold

and to a recovery tank as per the instructions in the recovery unit manual. If there was a compressor burn out, the refrigerant cannot be reused and must be disposed of according to local codes.

STEP 2 All water coil heat exchangers must either have full flow or be completely drained of fluid before recovery begins. Failure to do so can freeze and rupture the heat exchanger, voiding its warranty. (Note that this does not apply to double wall domestic hot water exchangers (desuperheater coils)

STEP 3 Ensure all hose connections are properly purged of air. Start the refrigerant recovery as per the instructions in the recovery unit manual.

STEP 4 Allow the recovery unit suction pressure to reach a vacuum. Once achieved, close the charging manifold valves. Shut down, purge and disconnect the recovery unit as per the instructions in its manual. Ensure the recovery tank valve is closed before disconnecting the hose to it.

STEP 5 Connect a nitrogen tank to the charging manifold and add nitrogen to the heat pump until a positive pres-sure of 5-10PSIG is reached. This prevents air from being sucked into the unit by the vacuum when the hoses are disconnected.

STEP 6 The heat pump is now ready for repairs. Always ensure nitrogen is flowing through the system during any soldering procedures to prevent soot buildup inside the pipes. Maritime Geothermal Ltd. recommends re-placing the liquid line filter-drier anytime the refrigeration system has been exposed to the atmosphere.

VACUUM AND CHARGING PROCEDURE STEP 1 After completion of repairs and nitrogen pressure testing, the refrigeration circuit is ready for vacuuming.

STEP 2 Release the refrigerant circuit pressure and connect the vacuum pump to the charging manifold. Start the vacuum pump and open the charging manifold valves. Vacuum until the vacuum gauge remains at less than 500 microns for at least 1 minute with the vacuum pump valve closed.

STEP 3 Close the charging manifold valves then shut off and disconnect the vacuum pump. Place a refrigerant tank with the proper refrigerant on a scale and connect it to the charging manifold. Purge the hose to the tank.

STEP 4 Weigh in the appropriate amount of refrigerant through the low pressure (suction) service port. Refer to the label on the unit or the Refrigerant Charge Chart in the MODEL SPECIFIC INFORMATION section for the proper charge amount.

STEP 5 If the unit will not accept the entire charge, the remainder can be added through the low pressure service port after the unit has been restarted.

REPLACMENT PROCEDURE FOR A COMPRESSOR BURNOUT STEP 1 Pump down the unit as per the Pump Down Procedure above. Discard the refrigerant according to local

codes.

STEP 2 Replace the compressor. Replace the liquid line filter-drier.

STEP 3 Vacuum the unit until it remains under 500 microns for several minutes with the vacuum pump valve closed.

STEP 4 Charge the unit with NEW REFRIGERANT and operate it for continuously for 2 hours. Pump down the unit and replace the filter-drier. Vacuum the unit until it remains under 500 microns for several minutes with the vacuum pump valve closed.

STEP 5 Charge the unit (refrigerant can be re-used) and operate it for 2-3 days. Perform an acid test. If it fails, pump down the unit and replace the filter-drier.

STEP 6 Charge the unit (refrigerant can be re-used) and operate it for 2 weeks. Perform and acid test, If it fails pump down the unit and replace the filter-drier.

STEP 7 Charge the unit a final time. Unit should now be clean and repeated future burn-outs can be avoided.

Repair Procedures


Model Specific Information Table 13 - Refrigerant Charge (Per Circuit)

SIZE TYPE lb kg OIL

W-150 R410a 5.5 2.5 POE

W-185 R410a 9.5 4.3 POE

W-240 R410a 10 4.5 PVE-BVC32

W-300 R410a 11 5.0 PVE-BVC32

W-400 R410a 13 5.9 PVE-BVC32

W-500 R410a 16 7.3 PVE-BVC32

W-600 R410a 19 8.6 PVE-BVC32

W-800 R410a 24 10.9 PVE-BVC32

W-900 R410a 25 11.4 PVE-BVC32

Table 14 - Shipping Information

WEIGHT DIMENSIONS in (cm)

lb (kg) L W H

150 950 (432) 78 (198) 32 (81) 82 (208)

185 1207 (549) 78 (198) 32 (81) 82 (208)

240 1351 (614) 78 (198) 32 (81) 82 (208)

300 1386 (630) 78 (198) 32 (81) 82 (208)

400 1440 (655) 78 (198) 32 (81) 82 (208)

500 1955 (889) 89 (226) 36 (91) 88 (224)

600 2054 (934) 89 (226) 36 (91) 88 (224)

900 2192 (996) 89 (226) 36 (91) 88 (224)

MODEL (W/WH)

800 2192 (996) 89 (226) 36 (91) 88 (224)

Table 12 - Loop Flow Rates Nominal

Size (60Hz)

Nominal Size

(50Hz)

Liquid Flow (Outdoor & Indoor)

tons tons gpm L/s

150 12 10 36 2.3

185 17 14 48 3.0

240 20 17 60 3.8

300 23 20 72 4.5

400 30 28 100 6.3

500 40 34 120 7.6

600 50 42 150 9.5

900 70 58 190 12.0

MODEL (W/WH)

800 65 55 190 12.0

WATER @ 104°F

FLOW (gpm)

PRESSURE DROP (psi)

W/WH-150 W/WH-185 W/WH-240 W/WH-300 W/WH-400 W/WH-500 W/WH-600 W/WH-800

24 0.9

28 1.2

32 1.5 1.0 0.8

36 1.9 1.3 1.0 0.7

40 2.3 1.6 1.2 0.9

48 3.3 2.2 1.7 1.2

60 3.4 2.6 1.8 1.0

72 3.7 2.6 1.4 1.5

90 4.0 2.2 2.2 1.5

100 2.7 2.6 1.8

110 3.2 3.1 2.2 1.5

120 3.8 3.6 2.6 1.8

130 4.2 3.0 2.0

150 3.8 2.6

170 4.8 3.3

190 4.0

210 4.8

Table 15a: Indoor Loop Pressure Drop"

W/WH-900

1.3

1.5

1.8

2.3

2.8

3.5

4.1

WH-150 R134a 5.5 2.5 POE

WH-185 R134a 9.5 4.3 POE

WH-240 R134a 10 4.5 POE

WH-300 R134a 11 5.0 POE

WH-400 R134a 13 5.9 POE

- Oil capacity is marked on the compressor label. - Refrigerant charge is subject to revision; actual charge is indi-cated on the unit nameplate.


WATER @ 50°F

FLOW (gpm)

PRESSURE DROP (psi)


24 1.0

28 1.3

32 1.6 1.1 0.9

36 2.0 1.4 1.1 0.8

40 2.4 1.7 1.3 1.0

48 3.4 2.3 1.8 1.3

60 3.5 2.7 1.9 1.1

72 3.8 2.7 1.5 1.6

90 4.1 2.3 2.3 1.6

100 2.8 2.7 1.9

110 3.3 3.2 2.3 1.6

120 3.9 3.7 2.7 1.9

130 4.3 3.1 2.1

150 3.9 2.7

170 4.9 3.4

190 4.1

210 4.9

Table 15b: Outdoor Loop Pressure Drop - Open Loop"

W/WH-900

1.5

1.7

2.0

2.5

3.2

4.0

4.7

35% PROP. GLYCOL @ 32°F

FLOW (gpm)

PRESSURE DROP (psi)


24 1.2

28 1.7

32 2.2 2.0 1.7

36 2.7 2.2 2.0

40 3.2 2.4 2.2 2.1

48 2.9 2.5 2.5

60 3.7 3.3 3.1 1.9

72 4.1 3.7 2.3 2.7

90 4.8 3.1 3.6 2.7

100 3.5 4.2 3.1

110 4.0 5.0 3.5 2.6

120 4.6 5.8 4.1 3.0

130 6.7 4.7 3.3

150 6.0 4.1

170 7.5 5.1

190 6.2

210 7.4

Table 15c: Outdoor Loop Pressure Drop - Closed Loop"

W/WH-900

2.6

2.9

3.3

3.9

4.9

5.9

7.1


Table 16a - W-SERIES Minimum and Maximum Operating Temperatures

Loop Parameter Mode (°F) (°C) Notes

Outdoor (Antifreeze)

Minimum ELT Heating 26 -3

Maximum ELT Heating 80 27

Minimum ELT Cooling 41* 5* Flow control valve may be required in Outdoor Loop.

Maximum ELT Cooling 113 45

Indoor (Antifreeze)

Minimum EWT Heating 50* 10* Flow control valve may be required in Indoor Loop.

Maximum LWT Heating 130 54

Minimum LWT Cooling 32 0

Maximum EWT Cooling 80 27

NOTES—ELT/LLT: Entering/Leaving Liquid Temperature, EWT/LWT: Entering/Leaving Water Temperature. Values in these tables are for rated liquid and water flow values. Ensure adequate antifreeze protection is present for desired operating temperatures. * Reduce Loop flow until value is reached for startup if necessary.


Minimum ELT Heating 26 -3




Indoor (Water)





Outdoor (Water)

Minimum ELT Heating 46 8




Indoor (Water)





Outdoor (Water)

Minimum ELT Heating 46 8


Minimum LLT Cooling 41* 5* Flow control valve may be required in Outdoor Loop.


Indoor (Antifreeze)






Minimum LLT ICE 0 -17

Maximum ELT ICE 80 27

Indoor Minimum EWT ICE 50* 10* Flow control valve may be required in Indoor Loop.

Maximum LWT ICE 110 43

Table 16b - WH-SERIES Minimum and Maximum Operating Temperatures

Loop Parameter (°F) (°C) Notes

Outdoor (Water)

Minimum ELT 45 7

Maximum ELT 90 32

Indoor (Water)

Minimum EWT 70 - 110 21 - 43 Use formula (Outdoor ELT + 20°F) or (Outdoor ELT + 11°C). Indoor loop may require flow control.

Maximum LWT 160 71


Standard Capacity Ratings - W-Series

Standard Capacity Ratings - Ground Loop Heating* EWT 104°F (40°C), ELT 32°F (0°C) 60Hz

Model Nominal

Size Liquid Flow

(Outdoor & Indoor) Outdoor

Pressure Drop Indoor

Pressure Drop Input

Energy Capacity Capacity COPH

tons gpm L/s psi kPa psi kPa watts Btu/hr kW W/W

W-150 12 36 2.3 2.7 19 1.9 13 9,545 108,200 32 3.32

W-185 17 48 3.0 2.9 20 2.2 15 14,920 168,400 49 3.31

W-240 20 60 3.8 3.3 23 2.6 18 16,790 197,900 58 3.45 W-300 23 72 4.6 3.7 26 2.6 18 18,650 231,000 68 3.66 W-400 30 100 6.3 3.5 24 2.7 19 24,915 291,700 85 3.43 W-500 40 120 7.6 5.8 40 3.6 25 36,400 423,900 124 3.41 W-600 50 150 9.5 6.0 41 3.8 26 41,150 478,900 140 3.41

W-900 70 210 13.2 7.1 49 4.1 28 57,600 683,500 200 3.48 * 35% Propylene Glycol by Volume Outdoor (Ground) Loop Fluid

W-800 65 190 12.0 6.2 43 4.0 28 52,910 612,500 179 3.39

Note: There are no Standard Capacity Ratings for the WH-Series; see WH Performance Tables.

Table 17 - W-SERIES Standard Capacity Ratings C13256-2

Standard Capacity Ratings - Ground Water Heating EWT 104°F (40°C), ELT 50°F (10°C) 60Hz

Model Nominal

Size Liquid Flow



Pressure Drop Input

Energy Capacity Capacity COPH

tons gpm L/s psi kPa psi kPa watts Btu/hr kW W/W

W-150 12 36 2.3 2.0 14 1.9 13 9928 148,700 44 4.39

W-185 17 48 3.0 2.3 16 2.2 15 15,390 230,000 67 4.38

W-240 20 60 3.8 2.7 19 2.6 18 17,625 274,500 80 4.56

W-300 23 72 4.6 2.7 19 2.6 18 19,360 316,900 93 4.80

W-400 30 100 6.3 2.8 19 2.7 19 25,970 408,600 119 4.61

W-500 40 120 7.6 3.7 26 3.6 25 36,465 569,800 167 4.58 W-600 50 150 9.5 3.9 27 3.8 26 42,630 683,400 200 4.70

W-900 70 210 13.2 4.7 32 4.1 28 59,500 914,800 268 4.51

W-800 65 190 12.0 4.1 28 4.0 28 54,885 850,600 249 4.54

Standard Capacity Ratings - Ground Water Cooling EWT 53.6°F (12°C), ELT 59°F (15°C) 60Hz

Model Nominal

Size Liquid Flow



Pressure Drop Input

Energy Capacity COPC EER

tons gpm L/s psi kPa psi kPa watts Btu/hr kW W/W Btu/hr/W

W-150 12 36 2.3 2.0 14 2.0 14 6,380 139,626 41 6.41 21.9

W-185 17 48 3.0 2.3 16 2.3 16 9,800 212,600 62 6.36 21.7

W-240 20 60 3.8 2.7 19 2.7 19 11,890 253,900 74 6.26 21.4

W-300 23 72 4.6 2.7 19 2.7 19 13,330 297,700 87 6.54 22.3

W-400 30 100 6.3 2.8 19 2.8 19 18,190 393,000 115 6.33 21.6

W-500 40 120 7.6 3.7 26 3.7 26 23,005 493,500 144 6.28 21.4

W-600 50 150 9.5 3.9 27 3.9 27 29,055 620,000 182 6.25 21.3

W-900 70 210 13.2 4.6 32 4.7 32 41,600 872,500 256 6.15 21.0

W-800 65 190 12.0 4.1 28 4.1 28 37,335 796,400 233 6.25 21.3

60Hz

Model Nominal

Size Liquid Flow



Pressure Drop Input

Energy Capacity COPC EER

tons gpm L/s psi kPa psi kPa watts Btu/hr kW W/W Btu/hr/W

W-150 12 36 2.3 2.4 17 2.0 14 8,145 124,189 36 4.47 15.2

W-185 17 48 3.0 2.5 17 2.3 16 12,560 189,800 56 4.43 15.1

W-240 20 60 3.8 2.9 20 2.7 19 14,635 224,600 66 4.50 15.4

W-300 23 72 4.6 2.8 19 2.7 19 15,960 272,500 80 5.00 17.1

W-400 30 100 6.3 3.0 21 2.8 19 22,070 365,300 107 4.85 16.6

W-500 40 120 7.6 5.4 37 3.7 26 29,055 474,600 139 4.79 15.5

W-600 50 150 9.5 5.7 39 3.9 27 36,415 578,000 169 4.65 15.9

W-900 70 210 13.2 4.5 31 4.7 32 52,300 802,000 235 4.50 15.3

* 35% Propylene Glycol by Volume Outdoor (Ground) Loop Fluid

Standard Capacity Ratings - Ground Loop Cooling* EWT 53.6°F (12°C), ELT 77°F (25°C)

W-800 65 190 12.0 5.9 62 4.1 28 47,030 743,800 228 4.63 15.8


Heating W-150-H(AC) Nominal 12 Ton R410a 60 Hz

Source Data (Outdoor Loop) 35% Propylene Glycol by Volume Power Consumption Sink Data (Indoor Loop)

Water ELT Evap.

Temp Flow LLT Delta T HAB Effective COPh EWT Cond. Temp. Flow LWT Delta T Output

°F °F gpm °F °F Btu/hr Watts Amps* W/W °F °F gpm °F °F Btu/hr

°C °C L/s °C °C watts °C °C L/s °C °C watts

25.0 12.5 36 21.5 3.5 59,164 9,812 14.4 2.75 104.0 118 36 109.1 5.1 92,192

-3.9 -10.8 2.3 -5.9 2.0 17,335 40.0 47.5 2.3 42.8 2.8 27,012

30.0 18 36 25.9 4.1 67,716 9,873 14.5 3.00 104.0 118 36 109.6 5.6 100,952

-1.1 -7.8 2.3 -3.4 2.3 19,841 40.0 47.8 2.3 43.1 3.1 29,579

35.0 23.5 36 30.2 4.8 79,568 9,923 14.5 3.34 104.0 119 36 110.3 6.3 112,975

1.7 -4.7 2.3 -1.0 2.7 23,313 40.0 48.1 2.3 43.5 3.5 33,101

40.0 29 36 34.6 5.4 90,716 9,987 14.6 3.65 104.0 119 36 110.9 6.9 124,341

4.4 -1.7 2.3 1.4 3.0 26,580 40.0 48.3 2.3 43.8 3.8 36,431

45.0 34.5 36 39.3 5.7 102,632 9,997 14.7 4.00 104.0 120 36 111.6 7.6 136,447

7.2 1.4 2.3 4.1 3.2 30,071 40.0 48.6 2.3 44.2 4.2 39,979

50.0 40 36 43.6 6.4 115,160 9,995 14.6 4.37 104.0 120 36 112.3 8.3 148,968

10.0 4.4 2.3 6.4 3.6 33,742 40.0 48.9 2.3 44.6 4.6 43,647

55.0 45.5 36 47.9 7.1 128,505 10,067 14.7 4.73 104.0 121 36 113.0 9.0 162,558

12.8 7.5 2.3 8.8 4.0 37,652 40.0 49.2 2.3 45.0 5.0 47,629

60.0 51 36 52.1 7.9 142,976 10,149 14.8 5.12 104.0 121 36 113.9 9.9 177,310

15.6 10.6 2.3 11.1 4.4 41,892 40.0 49.4 2.3 45.5 5.5 51,951 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressor: ZP67KCE-TFD (460-3-60)

Cooling (Full Load) W-150-H(AC) R410a 60 Hz

Source Data (Indoor Loop) Water Power Consumption Sink Data (Outdoor Loop)

35% Propylene Glycol by Volume EWT Evap.

Temp Flow LWT Delta T HAB Effective Efficiency ELT Cond. Temp. Flow LLT Delta T Rejection

°F °F gpm °F °F Btu/hr Watts Amps* COPc °F °F gpm °F °F Btu/hr

°C °C L/s °C °C watts EER °C °C L/s °C °C watts

53.6 38.2 36 45.1 8.5 152,363 6,597 11.0 6.8 55 81 36 65.2 10.2 174,120

12.0 3.4 2.3 7.3 4.7 44,642 23.1 13 27.2 2.3 18.4 5.7 51,017

53.6 38.3 36 45.3 8.3 148,471 7,018 11.4 6.2 60 87 36 70.0 10.0 171,664

12.0 3.5 2.3 7.4 4.6 43,501 21.2 16 30.6 2.3 21.1 5.6 50,297

53.6 38.4 36 45.6 8.0 144,391 7,463 11.9 5.7 65 93 36 74.9 9.9 169,106

12.0 3.6 2.3 7.5 4.5 42,306 19.3 18 33.9 2.3 23.8 5.5 49,548

53.6 38.5 36 45.8 7.8 140,421 7,895 12.3 5.2 70 99 36 79.7 9.7 166,609

12.0 3.6 2.3 7.7 4.3 41,143 17.8 21 36.9 2.3 26.5 5.4 48,816

53.6 38.6 36 46.0 7.6 136,195 8,361 12.8 4.8 75 104 36 84.8 9.8 163,960

12.0 3.7 2.3 7.8 4.2 39,905 16.3 24 40.0 2.3 29.4 5.5 48,040

53.6 38.7 36 46.3 7.3 131,337 8,899 13.4 4.3 80 110 36 89.7 9.7 160,937

12.0 3.7 2.3 7.9 4.1 38,481 14.8 27 43.3 2.3 32.0 5.4 47,154

53.6 38.8 36 46.6 7.0 126,284 9,493 14.0 3.9 85 116 36 94.5 9.5 157,911

12.0 3.8 2.3 8.1 3.9 37,001 13.3 29 46.7 2.3 34.7 5.3 46,267

53.7 38.9 36 47.0 6.7 120,930 10,139 14.7 3.5 90 122 36 99.3 9.3 154,763

12.1 3.8 2.3 8.3 3.7 35,432 11.9 32 50.0 2.3 37.4 5.2 45,345 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressor: ZP67KCE-TFD (460-3-60)

Performance Tables - W-Series


Heating (Full Load) W-185-H(AC) Nominal 17 Ton R410a 60 Hz


Water ELT Evap.




25.0 15 48 20.4 4.6 103,081 14,755 22.6 3.03 104.0 115 48 110.4 6.4 152,362

-3.9 -9.4 3.0 -6.5 2.6 30,202 40.0 46.1 3.0 43.5 3.5 44,642

30.0 19 48 24.9 5.1 113,440 14,928 22.8 3.21 104.0 116 48 110.8 6.8 163,310

-1.1 -7.2 3.0 -3.9 2.8 33,238 40.0 46.7 3.0 43.8 3.8 47,849

35.0 24 48 29.2 5.8 128,106 14,906 22.7 3.50 104.0 116 48 111.4 7.4 177,902

1.7 -4.4 3.0 -1.5 3.2 37,535 40.0 46.7 3.0 44.1 4.1 52,125

40.0 29 48 33.5 6.5 143,658 15,068 22.9 3.77 104.0 117 48 112.1 8.1 194,005

4.4 -1.7 3.0 0.9 3.6 42,091 40.0 47.2 3.0 44.5 4.5 56,843

45.0 34 48 38.3 6.7 160,365 15,213 23.4 4.08 104.0 117 48 112.8 8.8 211,654

7.2 1.1 3.0 3.5 3.7 46,987 40.0 47.2 3.0 44.9 4.9 62,014

50.0 39 48 42.6 7.4 178,091 15,392 23.6 4.38 104.0 118 48 113.6 9.6 229,989

10.0 3.9 3.0 5.9 4.1 52,180 40.0 47.8 3.0 45.3 5.3 67,386

55.0 43 48 47.0 8.0 192,447 15,397 23.6 4.65 104.0 118 48 114.2 10.2 244,364

12.8 6.1 3.0 8.3 4.5 56,387 40.0 47.8 3.0 45.7 5.7 71,598

60.0 48 48 51.2 8.8 210,221 15,606 23.8 4.93 104.0 119 48 115.0 11.0 262,852

15.6 8.9 3.0 10.7 4.9 61,594 40.0 48.3 3.0 46.1 6.1 77,015 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressors: ZP103KCE-TFD (460-3-60)







53.6 37.0 48 44.5 9.1 218,092 9,222 17.3 6.9 55 76 48 65.9 10.9 248,175

12.0 2.8 3.0 6.9 5.1 63,900 23.6 13 24.4 3.0 18.8 6.0 72,715

53.6 37.2 48 44.8 8.8 211,528 9,918 18.0 6.2 60 82 48 70.7 10.7 243,988

12.0 2.9 3.0 7.1 4.9 61,977 21.3 16 27.8 3.0 21.5 5.9 71,488

53.6 37.4 48 45.0 8.6 205,836 10,522 18.6 5.7 65 87 48 75.5 10.5 240,358

12.0 3.0 3.0 7.2 4.8 60,309 19.6 18 30.6 3.0 24.2 5.9 70,424

53.6 37.6 48 45.3 8.3 199,089 11,285 19.3 5.2 70 93 48 80.4 10.4 236,213

12.0 3.1 3.0 7.4 4.6 58,332 17.6 21 33.9 3.0 26.9 5.8 69,210

53.6 37.8 48 45.5 8.1 193,360 11,987 19.9 4.7 75 98 48 85.5 10.5 232,787

12.0 3.2 3.0 7.5 4.5 56,654 16.1 24 36.7 3.0 29.7 5.8 68,206

53.6 38.0 48 45.8 7.8 186,493 13,004 21.0 4.2 80 104 48 90.3 10.3 229,392

12.0 3.3 3.0 7.7 4.3 54,642 14.3 27 40.0 3.0 32.4 5.7 67,211

53.6 38.2 48 46.1 7.5 180,818 13,789 21.8 3.8 85 109 48 95.2 10.2 226,395

12.0 3.4 3.0 7.8 4.2 52,979 13.1 29 42.8 3.0 35.1 5.7 66,333

53.6 38.4 48 46.3 7.3 174,057 14,805 22.8 3.4 90 115 48 100.0 10.0 223,103

12.0 3.6 3.0 8.0 4.0 50,998 11.8 32 46.1 3.0 37.8 5.6 65,369 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressors: ZP103KCE-TFD (460-3-60)





Water ELT Evap.




25.0 15 60 20.5 4.5 124,010 16,540 22.3 3.18 104.0 115 60 110.0 6.0 179,382

-3.9 -9.4 3.8 -6.4 2.5 36,335 40.0 46.1 3.8 43.3 3.3 52,559

30.0 19 60 25.1 4.9 135,844 16,771 22.6 3.35 104.0 116 60 110.4 6.4 192,004

-1.1 -7.2 3.8 -3.8 2.7 39,802 40.0 46.7 3.8 43.6 3.6 56,257

35.0 24 60 29.5 5.5 152,652 16,822 22.7 3.64 104.0 116 60 111.0 7.0 208,988

1.7 -4.4 3.8 -1.4 3.1 44,727 40.0 46.7 3.8 43.9 3.9 61,233

40.0 29 60 33.9 6.1 170,718 17,067 23.0 3.91 104.0 117 60 111.6 7.6 227,887

4.4 -1.7 3.8 1.0 3.4 50,020 40.0 47.2 3.8 44.2 4.2 66,770

45.0 34 60 38.7 6.3 190,144 17,339 23.6 4.20 104.0 117 60 112.3 8.3 248,688

7.2 1.1 3.8 3.7 3.5 55,712 40.0 47.2 3.8 44.6 4.6 72,865

50.0 39 60 43.0 7.0 210,878 17,609 24.0 4.50 104.0 118 60 113.0 9.0 270,346

10.0 3.9 3.8 6.1 3.9 61,787 40.0 47.8 3.8 45.0 5.0 79,211

55.0 43 60 47.4 7.6 227,622 17,684 24.1 4.76 104.0 118 60 113.6 9.6 287,345

12.8 6.1 3.8 8.6 4.2 66,693 40.0 47.8 3.8 45.3 5.3 84,191

60.0 48 60 51.7 8.3 248,374 17,990 24.5 5.03 104.0 119 60 114.3 10.3 309,139

15.6 8.9 3.8 11.0 4.6 72,773 40.0 48.3 3.8 45.7 5.7 90,577 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressors: GSD60120VAB-430 (460-3-60)







53.6 37.0 60 44.9 8.7 261,239 11,378 16.0 6.7 55 76 60 65.5 10.5 298,680

12.0 2.8 3.8 7.2 4.8 76,542 23.0 13 24.4 3.8 18.6 5.8 87,513

53.6 37.2 60 45.2 8.4 252,505 11,994 16.7 6.2 60 82 60 70.2 10.2 292,050

12.0 2.9 3.8 7.3 4.7 73,983 21.1 16 27.8 3.8 21.2 5.7 85,570

53.6 37.4 60 45.4 8.2 245,087 12,562 17.4 5.7 65 87 60 75.1 10.1 286,572

12.0 3.0 3.8 7.5 4.5 71,810 19.5 18 30.6 3.8 23.9 5.6 83,965

53.6 37.6 60 45.7 7.9 236,457 13,311 18.4 5.2 70 93 60 79.8 9.8 280,496

12.0 3.1 3.8 7.6 4.4 69,281 17.8 21 33.9 3.8 26.6 5.5 82,185

53.6 37.8 60 46.0 7.6 229,288 14,022 19.2 4.8 75 98 60 84.9 9.9 275,660

12.0 3.2 3.8 7.8 4.2 67,181 16.4 24 36.7 3.8 29.4 5.5 80,768

53.6 38.0 60 46.2 7.4 220,879 15,093 20.6 4.3 80 104 60 89.7 9.7 270,906

12.0 3.3 3.8 7.9 4.1 64,717 14.6 27 40.0 3.8 32.1 5.4 79,375

53.6 38.2 60 46.5 7.1 214,090 15,911 21.7 3.9 85 109 60 94.6 9.6 266,911

12.0 3.4 3.8 8.0 4.0 62,728 13.5 29 42.8 3.8 34.8 5.3 78,204

53.6 38.4 60 46.7 6.9 206,208 16,974 23.0 3.6 90 115 60 99.4 9.4 262,656

12.0 3.6 3.8 8.2 3.8 60,418 12.1 32 46.1 3.8 37.5 5.2 76,957 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressors: GSD60120VAB-430 (460-3-60)





Water ELT Evap.




25.0 15 72 20.6 4.4 145,251 18,253 24.6 3.31 104.0 115 72 109.7 5.7 206,114

-3.9 -9.4 4.5 -6.3 2.4 42,558 40.0 45.8 4.5 43.2 3.2 60,391

30.0 19 72 25.1 4.9 162,335 18,460 24.9 3.55 104.0 115 72 110.2 6.2 223,905

-1.1 -7.2 4.5 -3.8 2.7 47,564 40.0 46.1 4.5 43.5 3.5 65,604

35.0 24 72 29.5 5.5 184,728 18,657 25.2 3.88 104.0 116 72 110.9 6.9 246,973

1.7 -4.4 4.5 -1.4 3.1 54,125 40.0 46.4 4.5 43.8 3.8 72,362

40.0 30 72 33.8 6.2 207,317 18,873 25.5 4.20 104.0 116 72 111.5 7.5 270,296

4.4 -1.1 4.5 1.0 3.5 60,743 40.0 46.7 4.5 44.2 4.2 79,196

45.0 34 72 38.6 6.4 228,925 19,033 25.9 4.51 104.0 117 72 112.1 8.1 292,910

7.2 1.1 4.5 3.7 3.5 67,074 40.0 46.9 4.5 44.5 4.5 85,822

50.0 39 72 43.0 7.0 251,767 19,360 26.3 4.80 104.0 117 72 112.8 8.8 316,871

10.0 3.9 4.5 6.1 3.9 73,767 40.0 47.2 4.5 44.9 4.9 92,842

55.0 43 72 47.4 7.6 273,206 19,711 26.8 5.05 104.0 118 72 113.4 9.4 339,506

12.8 6.1 4.5 8.6 4.2 80,049 40.0 47.5 4.5 45.2 5.2 99,474

60.0 48 72 51.7 8.3 298,426 20,039 27.2 5.35 104.0 118 72 114.2 10.2 365,845

15.6 8.9 4.5 10.9 4.6 87,438 40.0 47.8 4.5 45.7 5.7 107,192 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressors: GSD60137VAB-430 (460-3-60)







53.6 36.5 72 45.2 8.4 302,741 12,879 18.2 6.9 55 75 72 65.1 10.1 344,649

12.0 2.5 4.5 7.3 4.7 88,702 23.5 13 23.9 4.5 18.4 5.6 100,981

53.6 37.0 72 45.4 8.2 296,024 13,444 18.9 6.5 60 80 72 69.9 9.9 339,859

12.0 2.8 4.5 7.4 4.6 86,734 22.0 16 26.7 4.5 21.1 5.5 99,578

53.6 37.5 72 45.6 8.0 288,743 14,187 19.8 6.0 65 86 72 74.8 9.8 335,117

12.0 3.1 4.5 7.5 4.5 84,601 20.4 18 30.0 4.5 23.8 5.4 98,188

53.6 38.0 72 45.8 7.8 282,195 14,851 20.6 5.6 70 91 72 79.7 9.7 330,833

12.0 3.3 4.5 7.6 4.4 82,682 19.0 21 32.8 4.5 26.5 5.4 96,933

53.6 38.5 72 45.9 7.7 275,705 15,650 21.5 5.2 75 96 72 84.8 9.8 326,847

12.0 3.6 4.5 7.7 4.3 80,781 17.6 24 35.6 4.5 29.3 5.4 95,765

53.6 39.0 72 46.1 7.5 268,481 16,608 22.7 4.7 80 102 72 89.7 9.7 322,894

12.0 3.9 4.5 7.9 4.1 78,664 16.2 27 38.9 4.5 32.0 5.4 94,607

53.6 39.5 72 46.3 7.3 261,310 17,473 23.8 4.4 85 107 72 94.6 9.6 318,675

12.0 4.2 4.5 8.0 4.0 76,563 15.0 29 41.7 4.5 34.8 5.3 93,371

53.6 40.0 72 46.5 7.1 254,369 18,401 25.0 4.1 90 112 72 99.4 9.4 314,903

12.0 4.4 4.5 8.1 3.9 74,530 13.8 32 44.4 4.5 37.5 5.2 92,266 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressors: GSD60137VAB-430 (460-3-60)





Water ELT Evap.




25.0 15 100 21.1 3.9 178,729 24,510 33.3 3.10 104.0 115 100 109.2 5.2 259,274

-3.9 -9.4 6.3 -6.0 2.1 52,367 40.0 46.1 6.3 42.9 2.9 75,967

30.0 19 100 25.7 4.3 200,848 24,863 33.8 3.33 104.0 116 100 109.7 5.7 282,599

-1.1 -7.2 6.3 -3.5 2.4 58,848 40.0 46.7 6.3 43.1 3.1 82,801

35.0 24 100 30.0 5.0 233,789 25,097 34.1 3.69 104.0 116 100 110.3 6.3 316,335

1.7 -4.4 6.3 -1.1 2.8 68,499 40.0 46.7 6.3 43.5 3.5 92,685

40.0 29 100 34.3 5.7 265,168 25,611 34.7 4.00 104.0 117 100 111.0 7.0 349,468

4.4 -1.7 6.3 1.3 3.2 77,693 40.0 47.2 6.3 43.9 3.9 102,393

45.0 34 100 39.1 5.9 296,663 25,463 34.9 4.39 104.0 117 100 111.6 7.6 381,217

7.2 1.1 6.3 3.9 3.3 86,921 40.0 47.2 6.3 44.2 4.2 111,695

50.0 39 100 43.4 6.6 328,730 26,002 35.6 4.68 104.0 118 100 112.3 8.3 415,123

10.0 3.9 6.3 6.3 3.7 96,317 40.0 47.8 6.3 44.6 4.6 121,630

55.0 43 100 47.9 7.1 354,935 26,253 35.9 4.94 104.0 118 100 112.9 8.9 442,185

12.8 6.1 6.3 8.8 3.9 103,995 40.0 47.8 6.3 44.9 4.9 129,559

60.0 48 100 52.2 7.8 387,317 26,691 36.4 5.23 104.0 119 100 113.5 9.5 476,063

15.6 8.9 6.3 11.2 4.3 113,483 40.0 48.3 6.3 45.3 5.3 139,485 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressor: GSD60182VAB-430 (460-3-60)







53.6 35.5 100 45.6 8.0 399,578 17,424 25.5 6.7 55 76 100 64.6 9.6 455,748

12.0 1.9 6.3 7.6 4.4 117,075 22.9 13 24.4 6.3 18.1 5.3 133,533

53.6 36.0 100 45.8 7.8 391,149 18,352 26.6 6.2 60 82 100 69.5 9.5 450,489

12.0 2.2 6.3 7.7 4.3 114,606 21.3 16 27.8 6.3 20.8 5.3 131,992

53.6 36.5 100 45.9 7.7 383,825 19,210 27.6 5.9 65 87 100 74.4 9.4 446,092

12.0 2.5 6.3 7.7 4.3 112,460 20.0 18 30.6 6.3 23.6 5.2 130,704

53.6 37.0 100 46.1 7.5 377,030 20,124 28.7 5.5 70 92 100 79.3 9.3 442,416

12.0 2.8 6.3 7.8 4.2 110,469 18.7 21 33.3 6.3 26.3 5.2 129,627

53.6 37.5 100 46.2 7.4 369,205 21,424 29.9 5.0 75 97 100 84.5 9.5 437,969

12.0 3.1 6.3 7.9 4.1 108,176 17.2 24 36.1 6.3 29.1 5.3 128,324

53.6 38.0 100 46.4 7.2 359,349 22,745 31.4 4.6 80 103 100 89.3 9.3 432,622

12.0 3.3 6.3 8.0 4.0 105,288 15.8 27 39.4 6.3 31.9 5.2 126,757

53.6 38.5 100 46.6 7.0 351,195 23,935 32.9 4.3 85 108 100 94.3 9.3 428,530

12.0 3.6 6.3 8.1 3.9 102,899 14.7 29 42.2 6.3 34.6 5.1 125,558

53.6 39.0 100 46.7 6.9 343,105 25,209 34.4 4.0 90 113 100 99.2 9.2 424,788

12.0 3.9 6.3 8.2 3.8 100,529 13.6 32 45.0 6.3 37.3 5.1 124,462 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressor: GSD60182VAB-430 (460-3-60)





Water ELT Evap.




25.0 15 120 20.4 4.6 255,634 36,097 48.3 3.05 104.0 115 120 110.3 6.3 375,720

-3.9 -9.4 7.6 -6.4 2.6 74,900 40.0 46.1 7.6 43.5 3.5 110,085

30.0 19 120 24.8 5.2 289,631 36,497 48.9 3.30 104.0 116 120 110.9 6.9 411,082

-1.1 -7.2 7.6 -4.0 2.9 84,861 40.0 46.7 7.6 43.8 3.8 120,446

35.0 24 120 29.0 6.0 330,887 36,558 49.0 3.63 104.0 116 120 111.5 7.5 452,546

1.7 -4.4 7.6 -1.6 3.3 96,949 40.0 46.7 7.6 44.2 4.2 132,595

40.0 29 120 33.4 6.6 368,358 36,541 48.9 3.93 104.0 117 120 112.2 8.2 489,959

4.4 -1.7 7.6 0.8 3.7 107,928 40.0 47.2 7.6 44.5 4.5 143,557

45.0 34 120 38.2 6.8 405,962 36,058 48.7 4.28 104.0 117 120 112.8 8.8 526,689

7.2 1.1 7.6 3.5 3.8 118,946 40.0 47.2 7.6 44.9 4.9 154,319

50.0 39 120 42.5 7.5 447,628 36,467 49.2 4.58 104.0 118 120 113.5 9.5 569,753

10.0 3.9 7.6 5.9 4.1 131,154 40.0 47.8 7.6 45.3 5.3 166,936

55.0 43 120 47.0 8.0 481,318 36,559 49.4 4.84 104.0 118 120 114.1 10.1 603,755

12.8 6.1 7.6 8.3 4.5 141,025 40.0 47.8 7.6 45.6 5.6 176,899

60.0 48 120 51.3 8.7 522,675 36,687 49.6 5.16 104.0 119 120 114.8 10.8 645,548

15.6 8.9 7.6 10.7 4.8 153,142 40.0 48.3 7.6 46.0 6.0 189,144 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressor: GSD80235VW (460-3-60)







53.6 35.5 120 45.3 8.3 496,114 20,903 32.3 6.6 55 76 120 65.0 10.0 567,456

12.0 1.9 7.6 7.4 4.6 145,360 22.7 13 24.4 7.6 18.3 5.5 166,263

53.6 36.0 120 45.4 8.2 490,977 22,340 33.8 6.2 60 82 120 70.0 10.0 567,222

12.0 2.2 7.6 7.5 4.5 143,855 21.1 16 27.8 7.6 21.1 5.5 166,195

53.6 36.5 120 45.5 8.1 487,559 23,848 35.5 5.8 65 87 120 75.0 10.0 568,951

12.0 2.5 7.6 7.5 4.5 142,853 19.6 18 30.6 7.6 23.9 5.5 166,701

53.6 37.0 120 45.5 8.1 483,917 25,277 37.1 5.4 70 92 120 80.0 10.0 570,188

12.0 2.8 7.6 7.5 4.5 141,786 18.4 21 33.3 7.6 26.7 5.6 167,064

53.6 37.5 120 45.6 8.0 480,194 27,013 39.1 5.0 75 97 120 85.3 10.3 572,391

12.0 3.1 7.6 7.6 4.4 140,696 17.0 24 36.1 7.6 29.6 5.7 167,709

53.6 38.0 120 45.7 7.9 473,679 29,327 41.8 4.5 80 103 120 90.3 10.3 573,772

12.0 3.3 7.6 7.6 4.4 138,787 15.5 27 39.4 7.6 32.4 5.7 168,114

53.6 38.5 120 45.8 7.8 470,629 31,409 44.4 4.2 85 108 120 95.4 10.4 577,828

12.0 3.6 7.6 7.6 4.4 137,893 14.4 29 42.2 7.6 35.2 5.8 169,302

53.6 39.0 120 45.8 7.8 467,046 33,651 47.1 3.9 90 113 120 100.5 10.5 581,898

12.0 3.9 7.6 7.7 4.3 136,843 13.4 32 45.0 7.6 38.0 5.8 170,494 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressor: GSD80235-VW (460-3-60)





Water ELT Evap.




25.0 15 150 20.9 4.1 285,040 40,524 53.7 3.04 104.0 115 150 109.6 5.6 420,223

-3.9 -9.4 9.5 -6.2 2.3 83,516 40.0 46.1 9.5 43.1 3.1 123,124

30.0 19 150 25.3 4.7 326,767 41,302 54.7 3.30 104.0 116 150 110.2 6.2 464,608

-1.1 -7.2 9.5 -3.7 2.6 95,742 40.0 46.7 9.5 43.4 3.4 136,129

35.0 24 150 29.6 5.4 376,514 41,892 55.6 3.61 104.0 116 150 110.9 6.9 516,369

1.7 -4.4 9.5 -1.3 3.0 110,318 40.0 46.7 9.5 43.8 3.8 151,295

40.0 29 150 33.9 6.1 425,675 42,559 56.5 3.91 104.0 117 150 111.6 7.6 567,805

4.4 -1.7 9.5 1.0 3.4 124,722 40.0 47.2 9.5 44.2 4.2 166,365

45.0 34 150 38.7 6.3 473,236 42,397 56.6 4.25 104.0 117 150 112.2 8.2 615,532

7.2 1.1 9.5 3.7 3.5 138,657 40.0 47.2 9.5 44.6 4.6 180,349

50.0 39 150 43.1 6.9 519,947 42,827 57.2 4.54 104.0 118 150 112.9 8.9 663,709

10.0 3.9 9.5 6.1 3.9 152,343 40.0 47.8 9.5 44.9 4.9 194,465

55.0 43 150 47.6 7.4 556,877 42,957 57.4 4.78 104.0 118 150 113.4 9.4 701,085

12.8 6.1 9.5 8.6 4.1 163,164 40.0 47.8 9.5 45.2 5.2 205,416

60.0 48 150 51.9 8.1 603,596 43,016 57.5 5.09 104.0 119 150 114.0 10.0 748,002

15.6 8.9 9.5 11.1 4.5 176,852 40.0 48.3 9.5 45.5 5.5 219,163 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressor: GSD80295VWB-51 (460-3-60)







53.6 35.5 150 45.2 8.4 630,504 28,015 40.1 6.6 55 76 150 65.1 10.1 722,791

12.0 1.9 9.5 7.3 4.7 184,736 22.5 13 24.4 9.5 18.4 5.6 211,776

53.6 36.0 150 45.4 8.2 616,658 29,493 41.6 6.1 60 82 150 70.0 10.0 713,989

12.0 2.2 9.5 7.4 4.6 180,679 20.9 16 27.8 9.5 21.1 5.6 209,197

53.6 36.5 150 45.5 8.1 605,883 31,255 43.6 5.7 65 87 150 75.0 10.0 709,229

12.0 2.5 9.5 7.5 4.5 177,522 19.4 18 30.6 9.5 23.9 5.5 207,802

53.6 37.0 150 45.7 7.9 594,797 33,366 46.1 5.2 70 92 150 79.9 9.9 705,349

12.0 2.8 9.5 7.6 4.4 174,274 17.8 21 33.3 9.5 26.6 5.5 206,665

53.6 37.5 150 45.8 7.8 582,945 35,870 48.7 4.8 75 97 150 85.1 10.1 700,914

12.0 3.1 9.5 7.7 4.3 170,801 16.3 24 36.1 9.5 29.5 5.6 205,366

53.6 38.0 150 46.0 7.6 567,415 38,034 51.2 4.4 80 103 150 90.0 10.0 692,770

12.0 3.3 9.5 7.8 4.2 166,251 14.9 27 39.4 9.5 32.2 5.5 202,980

53.6 38.5 150 46.2 7.4 554,750 39,628 53.1 4.1 85 108 150 94.9 9.9 685,545

12.0 3.6 9.5 7.9 4.1 162,540 14.0 29 42.2 9.5 34.9 5.5 200,863

53.6 39.0 150 46.4 7.2 541,396 42,510 56.8 3.7 90 113 150 99.8 9.8 682,029

12.0 3.9 9.5 8.0 4.0 158,628 12.7 32 45.0 9.5 37.7 5.5 199,833 * Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressor: GSD80295VWB-51 (460-3-60)





Water ELT Evap.




25.0 15 190 20.9 4.1 364,942 51,982 70.8 3.04 104.0 115 190 109.7 5.7 539,215

-3.9 -9.4 12.0 -6.2 2.3 106,927 40.0 46.1 12.0 43.2 3.2 157,989

30.0 19 190 25.3 4.7 416,143 53,040 72.2 3.28 104.0 116 190 110.3 6.3 594,030

-1.1 -7.2 12.0 -3.7 2.6 121,929 40.0 46.7 12.0 43.5 3.5 174,049

35.0 24 190 29.5 5.5 483,522 53,313 72.6 3.64 104.0 116 190 111.0 7.0 662,339

1.7 -4.4 12.0 -1.4 3.1 141,671 40.0 46.7 12.0 43.9 3.9 194,064

40.0 29 190 33.8 6.2 545,310 54,279 73.9 3.93 104.0 117 190 111.7 7.7 727,425

4.4 -1.7 12.0 1.0 3.4 159,775 40.0 47.2 12.0 44.3 4.3 213,134

45.0 34 190 38.6 6.4 607,144 54,239 74.3 4.27 104.0 117 190 112.3 8.3 789,871

7.2 1.1 12.0 3.7 3.6 177,892 40.0 47.2 12.0 44.6 4.6 231,430

50.0 39 190 43.0 7.0 665,667 54,885 75.2 4.54 104.0 118 190 113.0 9.0 850,599

10.0 3.9 12.0 6.1 3.9 195,039 40.0 47.8 12.0 45.0 5.0 249,223

55.0 43 190 47.5 7.5 713,255 55,133 75.5 4.78 104.0 118 190 113.5 9.5 899,034

12.8 6.1 12.0 8.6 4.2 208,982 40.0 47.8 12.0 45.3 5.3 263,415

60.0 48 190 51.9 8.1 773,317 55,315 75.8 5.08 104.0 119 190 114.1 10.1 959,718








53.6 35.5 190 45.1 8.5 808,620 35,990 52.5 6.6 55 76 190 65.3 10.3 928,094

12.0 1.9 12.0 7.3 4.7 236,924 22.5 13 24.4 12.0 18.5 5.7 271,929

53.6 36.0 190 45.3 8.3 792,420 37,870 54.4 6.1 60 82 190 70.2 10.2 918,309

12.0 2.2 12.0 7.4 4.6 232,177 20.9 16 27.8 12.0 21.2 5.7 269,062

53.6 36.5 190 45.4 8.2 779,334 40,240 57.3 5.7 65 87 190 75.1 10.1 913,313

12.0 2.5 12.0 7.4 4.6 228,343 19.4 18 30.6 12.0 24.0 5.6 267,598

53.6 37.0 190 45.5 8.1 765,416 42,981 60.7 5.2 70 92 190 80.1 10.1 908,749

12.0 2.8 12.0 7.5 4.5 224,265 17.8 21 33.3 12.0 26.7 5.6 266,261

53.6 37.5 190 45.7 7.9 750,309 46,414 64.6 4.7 75 97 190 85.3 10.3 904,300

12.0 3.1 12.0 7.6 4.4 219,838 16.2 24 36.1 12.0 29.6 5.7 264,958

53.6 38.0 190 45.9 7.7 729,901 49,104 67.9 4.4 80 103 190 90.1 10.1 893,074

12.0 3.3 12.0 7.7 4.3 213,859 14.9 27 39.4 12.0 32.3 5.6 261,668

53.6 38.5 190 46.1 7.5 712,992 51,114 70.3 4.1 85 108 190 95.0 10.0 883,025

12.0 3.6 12.0 7.8 4.2 208,905 13.9 29 42.2 12.0 35.0 5.6 258,724

53.6 39.0 190 46.3 7.3 695,032 54,881 75.2 3.7 90 113 190 100.0 10.0 877,922





Heating (Full Load) W-900-H Nominal 70 Ton R410a 60 Hz


Water ELT Evap.




25.0 15 210 20.9 4.1 396,857 56,628 80.0 3.04 104.0 115 210 109.6 5.6 586,987

-3.9 -9.4 13.2 -6.2 2.3 116,278 40.0 46.1 13.2 43.1 3.1 171,986

30.0 19.8 210 25.2 4.8 464,049 57,280 81.0 3.36 104.0 116 210 110.3 6.3 656,405

-1.1 -6.8 13.2 -3.8 2.7 135,965 40.0 46.4 13.2 43.5 3.5 192,325

35.0 24.6 210 29.6 5.4 529,456 57,975 82.0 3.66 104.0 116 210 110.9 6.9 724,186

1.7 -4.1 13.2 -1.4 3.0 155,129 40.0 46.7 13.2 43.8 3.8 212,185

40.0 29.4 210 33.9 6.1 592,737 58,642 82.9 3.95 104.0 117 210 111.5 7.5 789,742

4.4 -1.4 13.2 1.1 3.4 173,670 40.0 46.9 13.2 44.2 4.2 231,392

45.0 34.2 210 38.8 6.2 653,162 59,142 83.9 4.22 104.0 117 210 112.1 8.1 852,557

7.2 1.2 13.2 3.8 3.5 191,375 40.0 47.2 13.2 44.5 4.5 249,797

50.0 39 210 43.2 6.8 714,260 59,467 84.4 4.51 104.0 118 210 112.7 8.7 914,764

10.0 3.9 13.2 6.2 3.8 209,276 40.0 47.5 13.2 44.8 4.8 268,024

55.0 43 210 47.7 7.3 770,112 60,178 85.5 4.74 104.0 118 210 113.3 9.3 973,043

12.8 6.1 13.2 8.7 4.1 225,641 40.0 47.8 13.2 45.2 5.2 285,099

60.0 47.8 210 52.1 7.9 827,690 59,951 85.2 5.03 104.0 119 210 113.8 9.8 1,029,846


Cooling (Full Load) W-900-H R410a 60 Hz






53.6 35.5 210 45.1 8.5 888,078 39,932 63.8 6.52 55 76 210 64.7 9.7 1,021,006

12.0 1.9 13.2 7.3 4.7 260,205 22.2 13 24.4 13.2 18.2 5.4 299,152

53.6 36.0 210 45.3 8.3 868,544 41,973 65.4 6.06 60 82 210 69.6 9.6 1,008,436

12.0 2.2 13.2 7.4 4.6 254,481 20.7 16 27.8 13.2 20.9 5.3 295,469

53.6 36.5 210 45.5 8.1 849,053 44,532 68.2 5.59 65 87 210 74.5 9.5 997,680

12.0 2.5 13.2 7.5 4.5 248,770 19.1 18 30.6 13.2 23.6 5.3 292,317

53.6 37.0 210 45.7 7.9 829,349 47,472 71.6 5.12 70 92 210 79.4 9.4 988,010

12.0 2.8 13.2 7.6 4.4 242,997 17.5 21 33.3 13.2 26.3 5.2 289,484

53.6 37.5 210 45.9 7.7 809,766 51,162 75.5 4.64 75 97 210 85.1 10.1 979,807

12.0 3.1 13.2 7.7 4.3 237,259 15.8 24 36.1 13.2 29.5 5.6 287,081

53.6 38.0 210 46.1 7.5 790,326 53,964 78.5 4.29 80 103 210 90.0 10.0 969,933

12.0 3.3 13.2 7.8 4.2 231,563 14.6 27 39.4 13.2 32.2 5.5 284,188

53.6 38.5 210 46.3 7.3 770,255 56,029 80.7 4.03 85 108 210 94.8 9.8 956,910

12.0 3.6 13.2 7.9 4.1 225,683 13.7 29 42.2 13.2 34.9 5.5 280,372

53.6 39.0 210 46.5 7.1 749,674 60,007 85.6 3.66 90 113 210 99.8 9.8 949,906



Performance Tables - WH-Series

120°F (49°C) Output WH-150-H(AC) R134a 60 Hz

Source Data (Outdoor Loop) Water Power / Efficiency Sink Data (Indoor Loop)

Water

ELT Evap. Temp Flow LLT Delta T Heat

Absorbed Effective COPh EWT Cond. Temp. Flow LWT Delta T Output

°F °F USGPM °F °F BTU/Hr Watts Amps* W/W °F °F USGPM °F °F BTU/Hr

°C °C L/s °C °C Watts °C °C L/s °C °C Watts

50.0 39 36.0 46.1 3.9 70,021 7,319 11.7 3.78 114.7 125 36.0 120.0 5.3 94,542

10.0 3.9 2.271 7.8 2.2 20,516 45.9 51.4 2.271 48.9 2.9 27,700

60.0 48.3 36.0 55.4 4.6 82,423 7,329 11.7 4.28 114.1 125 36.0 120.0 5.9 106,977

15.6 9.1 2.271 13.0 2.5 24,150 45.6 51.5 2.271 48.9 3.3 31,344

70.0 57.5 36.0 64.6 5.4 98,005 7,495 11.9 4.81 113.2 125 36.0 120.0 6.8 123,125

21.1 14.2 2.271 18.1 3.0 28,715 45.1 51.8 2.271 48.9 3.8 36,075

80.0 66.3 36.0 73.5 6.5 117,040 7,684 12.1 5.45 112.1 126 36.0 120.0 7.9 142,806

26.7 19.1 2.271 23.1 3.6 34,292 44.5 52.0 2.271 48.9 4.4 41,842

90.0 75 36.0 82.3 7.7 139,356 7,888 12.3 6.16 110.8 126 36.0 120.0 9.2 165,817

32.2 23.9 2.271 27.9 4.3 40,831 43.8 52.2 2.271 48.9 5.1 48,584

140°F (60°C) Output 50.0 39 36.0 46.5 3.5 62,292 8,834 13.2 3.05 134.9 144 36.0 140.0 5.1 91,983

10.0 3.9 2.271 8.1 1.9 18,251 57.2 62.2 2.271 60.0 2.8 26,951

60.0 49 36.0 55.9 4.1 73,445 8,747 13.1 3.44 134.3 144 36.0 140.0 5.7 102,840

15.6 9.4 2.271 13.3 2.3 21,519 56.8 62.4 2.271 60.0 3.2 30,132

70.0 59 36.0 65.2 4.8 86,801 8,794 13.1 3.88 133.5 145 36.0 140.0 6.5 116,353

21.1 15.0 2.271 18.4 2.7 25,432 56.4 62.6 2.271 60.0 3.6 34,091

80.0 67.5 36.0 74.3 5.7 102,894 8,917 13.2 4.37 132.6 145 36.0 140.0 7.4 132,868

26.7 19.7 2.271 23.5 3.2 30,148 55.9 62.8 2.271 60.0 4.1 38,930

90.0 76 36.0 83.3 6.7 121,247 9,071 13.4 4.90 131.6 146 36.0 140.0 8.4 151,745

32.2 24.4 2.271 28.5 3.7 35,525 55.3 63.2 2.271 60.0 4.7 44,461

160°F (71°C) Output 50.0 41 36.0 47.1 2.9 52,021 10,849 15.5 2.39 155.1 164 36.0 160.0 4.9 88,587

10.0 5.0 2.271 8.4 1.6 15,242 68.4 73.3 2.271 71.1 2.7 25,956

60.0 50 36.0 56.6 3.4 60,724 10,725 15.3 2.65 154.7 164 36.0 160.0 5.4 96,868

15.6 10.0 2.271 13.7 1.9 17,792 68.1 73.5 2.271 71.1 3.0 28,382

70.0 59 36.0 66.0 4.0 72,339 10,651 15.1 2.98 154.0 165 36.0 160.0 6.0 108,232

21.1 15.0 2.271 18.9 2.2 21,195 67.8 73.6 2.271 71.1 3.3 31,712

80.0 68 36.0 75.2 4.8 85,968 10,533 14.9 3.38 153.3 165 36.0 160.0 6.8 121,457

26.7 20.0 2.271 24.0 2.7 25,188 67.4 73.8 2.271 71.1 3.8 35,587

90.0 77 36.0 84.3 5.7 101,928 10,531 14.9 3.82 152.4 165 36.0 160.0 7.6 137,411

32.2 25.0 2.271 29.1 3.1 29,865 66.9 74.0 2.271 71.1 4.2 40,261

* Multiply by 2.2 for 208VAC, by 0.8 for 575VAC Compressor: ZR68KCE-TFD (460-3-60)





Water





50.0 39 48.0 45.8 4.2 101,865 9,522 37.5 4.11 114.4 124 48.0 120.0 5.6 133,715

10.0 3.9 3.028 7.6 2.4 29,846 45.8 51.2 3.028 48.9 3.1 39,178

60.0 48.3 48.0 55.0 5.0 119,972 9,605 37.7 4.64 113.7 125 48.0 120.0 6.3 152,106

15.6 9.1 3.028 12.8 2.8 35,151 45.4 51.4 3.028 48.9 3.5 44,567

70.0 57.5 48.0 64.0 6.0 142,871 9,842 38.9 5.23 112.7 125 48.0 120.0 7.3 175,814

21.1 14.2 3.028 17.8 3.3 41,861 44.8 51.7 3.028 48.9 4.1 51,513

80.0 66.3 48.0 72.9 7.1 170,793 10,185 40.8 5.89 111.5 125 48.0 120.0 8.5 204,906

26.7 19.1 3.028 22.7 4.0 50,042 44.1 51.8 3.028 48.9 4.7 60,037

90.0 75 48.0 81.5 8.5 203,267 10,798 44.4 6.50 110.0 126 48.0 120.0 10.0 239,471

32.2 23.9 3.028 27.5 4.7 59,557 43.3 51.9 3.028 48.9 5.5 70,164

140°F (60°C) Output 50.0 39 48.0 46.3 3.7 87,970 12,735 47.0 3.01 134.5 144 48.0 140.0 5.5 130,785

10.0 3.9 3.028 8.0 2.0 25,775 56.9 62.2 3.028 60.0 3.0 38,320

60.0 49 48.0 55.6 4.4 104,471 12,605 46.5 3.41 133.9 144 48.0 140.0 6.1 146,842

15.6 9.4 3.028 13.1 2.4 30,610 56.6 62.4 3.028 60.0 3.4 43,024

70.0 59 48.0 64.8 5.2 124,053 12,776 47.4 3.83 133.0 145 48.0 140.0 7.0 167,010

21.1 15.0 3.028 18.2 2.9 36,347 56.1 62.5 3.028 60.0 3.9 48,934

80.0 67.5 48.0 73.8 6.2 148,227 12,818 48.1 4.37 132.1 145 48.0 140.0 8.0 191,325

26.7 19.7 3.028 23.2 3.4 43,430 55.6 62.6 3.028 60.0 4.4 56,058

90.0 76 48.0 82.7 7.3 175,456 13,129 50.3 4.90 130.8 145 48.0 140.0 9.2 219,615

32.2 24.4 3.028 28.2 4.1 51,408 54.9 62.8 3.028 60.0 5.1 64,347

160°F (71°C) Output 50.0 41 48.0 46.9 3.1 73,812 15,386 54.1 2.39 154.8 164 48.0 160.0 5.2 125,674

10.0 5.0 3.028 8.3 1.7 21,627 68.2 73.3 3.028 71.1 2.9 36,822

60.0 50 48.0 56.4 3.6 87,123 15,190 53.5 2.67 154.3 164 48.0 160.0 5.8 138,319

15.6 10.0 3.028 13.5 2.0 25,527 67.9 73.5 3.028 71.1 3.2 40,527

70.0 59 48.0 65.7 4.3 103,771 15,156 53.6 2.99 153.5 165 48.0 160.0 6.5 154,851

21.1 15.0 3.028 18.7 2.4 30,405 67.5 73.6 3.028 71.1 3.6 45,371

80.0 68 48.0 74.8 5.2 124,121 15,153 54.2 3.39 152.7 165 48.0 160.0 7.3 175,191

26.7 20.0 3.028 23.8 2.9 36,367 67.0 73.8 3.028 71.1 4.1 51,330

90.0 77 48.0 83.8 6.2 147,752 15,251 55.4 3.83 151.7 165 48.0 160.0 8.3 199,155

32.2 25.0 3.028 28.8 3.4 43,291 66.5 73.9 3.028 71.1 4.6 58,352

* Divide by 2.2 for 460VAC, by 2.75 for 575VAC Compressor: ZR94KCE-TF5 (208-3-60)





Water





50.0 39 60.0 45.7 4.3 128,176 13,416 21.9 3.79 114.4 124 60.0 120.0 5.8 173,332

10.0 3.9 3.785 7.6 2.4 37,555 45.8 51.2 3.785 48.9 3.2 50,786

60.0 48.3 60.0 55.0 5.0 150,406 13,525 22.0 4.24 113.6 125 60.0 120.0 6.5 195,934

15.6 9.1 3.785 12.8 2.8 44,068 45.3 51.4 3.785 48.9 3.6 57,408

70.0 57.5 60.0 64.0 6.0 178,850 13,665 22.4 4.82 112.5 125 60.0 120.0 7.5 224,856

21.1 14.2 3.785 17.8 3.3 52,402 44.7 51.6 3.785 48.9 4.2 65,882

80.0 66.3 60.0 72.9 7.1 213,234 13,996 23.4 5.45 111.3 125 60.0 120.0 8.7 260,370

26.7 19.1 3.785 22.7 4.0 62,477 44.1 51.7 3.785 48.9 4.8 76,288

90.0 75 60.0 81.5 8.5 253,503 14,461 25.1 6.12 109.9 125 60.0 120.0 10.1 302,226

32.2 23.9 3.785 27.5 4.7 74,276 43.3 51.9 3.785 48.9 5.6 88,551

140°F (60°C) Output 50.0 39 60.0 46.1 3.9 115,665 16,356 23.3 3.02 134.4 144 60.0 140.0 5.6 168,381

10.0 3.9 3.785 7.9 2.1 33,890 56.9 62.2 3.785 60.0 3.1 49,335

60.0 49 60.0 55.5 4.5 136,024 16,078 22.9 3.42 133.8 144 60.0 140.0 6.3 187,789

15.6 9.4 3.785 13.0 2.5 39,855 56.5 62.4 3.785 60.0 3.5 55,022

70.0 59 60.0 64.6 5.4 160,466 16,154 23.2 3.85 132.9 145 60.0 140.0 7.1 212,490

21.1 15.0 3.785 18.1 3.0 47,016 56.1 62.5 3.785 60.0 3.9 62,259

80.0 67.5 60.0 73.7 6.3 189,468 16,375 24.0 4.33 132.0 145 60.0 140.0 8.1 242,247

26.7 19.7 3.785 23.2 3.5 55,514 55.5 62.6 3.785 60.0 4.5 70,978

90.0 76 60.0 82.6 7.4 222,146 16,722 25.8 4.85 130.8 145 60.0 140.0 9.2 276,866

32.2 24.4 3.785 28.1 4.1 65,088 54.9 62.8 3.785 60.0 5.1 81,121

160°F (71°C) Output 50.0 41 60.0 46.8 3.2 96,130 20,086 27.6 2.36 154.6 164 60.0 160.0 5.4 161,576

10.0 5.0 3.785 8.2 1.8 28,166 68.1 73.3 3.785 71.1 3.0 47,341

60.0 50 60.0 56.2 3.8 112,863 19,709 27.0 2.63 154.1 164 60.0 160.0 5.9 177,021

15.6 10.0 3.785 13.5 2.1 33,068 67.8 73.5 3.785 71.1 3.3 51,867

70.0 59 60.0 65.5 4.5 134,024 19,464 26.8 2.97 153.4 165 60.0 160.0 6.6 197,345

21.1 15.0 3.785 18.6 2.5 39,269 67.4 73.6 3.785 71.1 3.7 57,822

80.0 68 60.0 74.7 5.3 159,648 19,421 27.2 3.36 152.6 165 60.0 160.0 7.4 222,823

26.7 20.0 3.785 23.7 3.0 46,776 67.0 73.8 3.785 71.1 4.1 65,287

90.0 77 60.0 83.7 6.3 189,632 19,357 28.4 3.83 151.5 165 60.0 160.0 8.5 253,347

32.2 25.0 3.785 28.7 3.5 55,562 66.4 73.9 3.785 71.1 4.7 74,230






Water





50.0 39 72.0 45.9 4.1 145,853 15,346 24.2 3.77 114.5 124 72.0 120.0 5.5 197,224

10.0 3.9 4.542 7.7 2.3 42,735 45.8 51.3 4.542 48.9 3.0 57,786

60.0 48.3 72.0 55.2 4.8 174,238 15,541 24.4 4.27 113.7 125 72.0 120.0 6.3 226,272

15.6 9.1 4.542 12.9 2.7 51,051 45.4 51.4 4.542 48.9 3.5 66,297

70.0 57.2 72.0 64.2 5.8 208,065 15,912 25.2 4.81 112.7 125 72.0 120.0 7.3 261,366

21.1 14.0 4.542 17.9 3.2 60,963 44.8 51.6 4.542 48.9 4.0 76,579

80.0 66.3 72.0 73.1 6.9 247,754 16,360 26.5 5.42 111.6 125 72.0 120.0 8.4 302,585

26.7 19.1 4.542 22.8 3.8 72,591 44.2 51.8 4.542 48.9 4.7 88,657

90.0 75 72.0 81.8 8.2 295,105 16,844 28.5 6.12 110.2 126 72.0 120.0 9.8 351,586

32.2 23.9 4.542 27.7 4.6 86,465 43.4 51.9 4.542 48.9 5.4 103,014

140°F (60°C) Output 50.0 39 72.0 46.4 3.6 129,553 18,444 27.5 3.04 134.7 144 72.0 140.0 5.3 191,496

10.0 3.9 4.542 8.0 2.0 37,959 57.1 62.2 4.542 60.0 3.0 56,108

60.0 49 72.0 55.8 4.2 152,846 18,302 27.2 3.43 134.0 144 72.0 140.0 6.0 214,303

15.6 9.4 4.542 13.2 2.4 44,783 56.7 62.3 4.542 60.0 3.3 62,790

70.0 59 72.0 65.0 5.0 181,162 18,454 27.7 3.86 133.2 145 72.0 140.0 6.8 243,138

21.1 15.0 4.542 18.3 2.8 53,080 56.2 62.5 4.542 60.0 3.8 71,239

80.0 67.5 72.0 74.0 6.0 214,684 18,646 28.6 4.36 132.3 145 72.0 140.0 7.7 277,317

26.7 19.7 4.542 23.4 3.3 62,902 55.7 62.6 4.542 60.0 4.3 81,253

90.0 76 72.0 83.0 7.0 252,964 19,115 30.5 4.86 131.2 145 72.0 140.0 8.8 317,196

32.2 24.4 4.542 28.3 3.9 74,118 55.1 62.8 4.542 60.0 4.9 92,938

160°F (71°C) Output 50.0 41 72.0 47.0 3.0 107,328 22,752 32.1 2.37 154.9 164 72.0 160.0 5.1 183,972

10.0 5.0 4.542 8.3 1.7 31,447 68.3 73.3 4.542 71.1 2.8 53,903

60.0 50 72.0 56.5 3.5 126,839 22,353 31.5 2.65 154.4 164 72.0 160.0 5.6 202,123

15.6 10.0 4.542 13.6 2.0 37,163 68.0 73.4 4.542 71.1 3.1 59,222

70.0 59 72.0 65.8 4.2 150,661 22,177 31.5 2.98 153.7 165 72.0 160.0 6.3 225,345

21.1 15.0 4.542 18.8 2.3 44,143 67.6 73.6 4.542 71.1 3.5 66,026

80.0 68 72.0 75.0 5.0 179,362 22,115 32.1 3.36 153.0 165 72.0 160.0 7.1 253,833

26.7 20.0 4.542 23.9 2.8 52,553 67.2 73.8 4.542 71.1 3.9 74,372

90.0 77 72.0 84.1 5.9 212,737 22,106 33.2 3.81 152.0 165 72.0 160.0 8.0 287,178

32.2 25.0 4.542 28.9 3.3 62,331 66.7 73.9 4.542 71.1 4.4 84,142






Water

ELT Evap. Temp Flow LLT Delta T HAB Effective COPh EWT Cond.

Temp. Flow LWT Delta T Output



50.0 39 100.0 46.0 4.0 198,701 20,719 37.4 3.77 114.7 125 100.0 120.0 5.3 266,306

10.0 3.9 6.309 7.8 2.2 58,219 45.9 51.4 6.309 48.9 3.0 78,027

60.0 48.3 100.0 55.3 4.7 236,899 21,054 37.8 4.25 113.9 125 100.0 120.0 6.1 305,648

15.6 9.1 6.309 12.9 2.6 69,411 45.5 51.5 6.309 48.9 3.4 89,554

70.0 57.5 100.0 64.3 5.7 285,621 21,758 38.8 4.80 112.9 125 100.0 120.0 7.1 356,773

21.1 14.2 6.309 17.9 3.2 83,686 44.9 51.7 6.309 48.9 4.0 104,533

80.0 66.3 100.0 73.1 6.9 345,767 22,662 40.1 5.43 111.5 125 100.0 119.9 8.4 420,005

26.7 19.1 6.309 22.8 3.8 101,309 44.1 51.8 6.309 48.8 4.7 123,060

90.0 75 100.0 81.7 8.3 416,573 23,613 41.7 6.14 110.1 126 100.0 120.0 9.9 494,811

32.2 23.9 6.309 27.6 4.6 122,055 43.4 51.9 6.309 48.9 5.5 144,978

140°F (60°C) Output 50.0 39 100.0 46.5 3.5 176,540 25,087 43.2 3.03 134.8 144 100.0 140.0 5.2 259,053

10.0 3.9 6.309 8.0 2.0 51,726 57.1 62.2 6.309 60.0 2.9 75,902

60.0 49 100.0 55.8 4.2 210,794 25,187 43.3 3.42 134.2 144 100.0 140.0 5.9 293,649

15.6 9.4 6.309 13.2 2.3 61,762 56.8 62.4 6.309 60.0 3.3 86,038

70.0 59 100.0 64.9 5.1 253,148 25,634 43.9 3.86 133.2 145 100.0 140.0 6.8 337,528

21.1 15.0 6.309 18.3 2.8 74,172 56.2 62.5 6.309 60.0 3.8 98,895

80.0 67.5 100.0 73.9 6.1 303,813 26,318 44.8 4.35 132.2 145 100.0 140.0 7.8 390,526

26.7 19.7 6.309 23.3 3.4 89,016 55.6 62.6 6.309 60.0 4.3 114,423

90.0 76 100.0 82.7 7.3 362,527 27,179 46.4 4.88 130.9 145 100.0 140.0 9.1 452,935

32.2 24.4 6.309 28.2 4.0 106,219 54.9 62.8 6.309 60.0 5.0 132,709

160°F (71°C) Output 50.0 41 100.0 47.1 2.9 147,110 30,625 51.1 2.38 155.0 164 100.0 160.0 5.0 248,525

10.0 5.0 6.309 8.4 1.6 43,103 68.3 73.3 6.309 71.1 2.8 72,817

60.0 50 100.0 56.5 3.5 175,221 30,654 51.1 2.65 154.5 164 100.0 160.0 5.5 276,733

15.6 10.0 6.309 13.6 1.9 51,339 68.0 73.5 6.309 71.1 3.1 81,082

70.0 59 100.0 65.8 4.2 211,048 30,811 51.3 2.98 153.7 165 100.0 160.0 6.3 313,096

21.1 15.0 6.309 18.8 2.3 61,836 67.6 73.6 6.309 71.1 3.5 91,736

80.0 68 100.0 74.9 5.1 254,508 31,101 51.7 3.37 152.9 165 100.0 160.0 7.2 357,549

26.7 20.0 6.309 23.8 2.8 74,570 67.1 73.8 6.309 71.1 4.0 104,761

90.0 77 100.0 83.9 6.1 305,130 31,512 52.5 3.82 151.8 165 100.0 160.0 8.2 410,330

32.2 25.0 6.309 28.8 3.4 89,402 66.6 73.9 6.309 71.1 4.6 120,226



Table 18a - W-Series Electrical Specifications

W-240

2 208-3-60 187 229 45.0 217 90.9 102.2 150 #1-3

4 460-3-60 414 506 23.6 122 47.7 53.6 80 #4-3

5 575-3-60 518 632 17.1 85 34.7 39.0 60 #6-3

7 380-3-50 342 418 23.6 122 47.7 53.6 80 #4-3

Nomenclature Identifier

Power Supply Compressors (each) FLA MCA Maximum

Fuse/Breaker Minimum Wire Size

V-ø-Hz MIN MAX RLA LRA Amps Amps Amps ga

W-150

1 230-1-60 187 253 35.7 148 71.9 80.8 100 #4-2

2 208-3-60 187 229 25.0 149 50.9 57.2 80 #6-3

4 460-3-60 414 506 11.8 75 24.1 27.1 30 #10-3

5 575-3-60 518 632 8.6 54 17.7 19.9 30 #10-3

6 220-1-50 187 253 32.9 176 66.3 74.5 100 #4-2

7 380-3-50 342 418 11.8 74 24.1 27.1 30 #10-3

W-185

2 208-3-60 187 229 33.6 225 68.1 76.5 100 #3-3

4 460-3-60 414 506 18.6 114 37.7 42.4 60 #6-3

5 575-3-60 518 632 13.6 80 27.7 31.1 40 #8-3

7 380-3-50 342 418 18.6 111 37.7 42.4 60 #6-3

W-300

2 208-3-60 187 229 49.3 252 99.5 111.8 150 #1-3

4 460-3-60 414 506 25.1 137 50.7 57.0 80 #4-3

5 575-3-60 518 632 21.4 103 43.3 48.7 60 #6-3

7 380-3-50 342 418 25.1 137 50.7 57.0 80 #4-3

W-400

2 208-3-60 187 229 64.3 330 129.5 145.6 200 #2/0-3

4 460-3-60 414 506 30.0 180 60.5 68.0 100 #3-3

5 575-3-60 518 632 24.0 132 48.5 54.5 80 #4-3

7 380-3-50 342 418 30.0 180 60.5 68.0 100 #3-3

Electrical Specifications - W-Series

W-500

4 460-3-60 414 506 38.3 212 77.1 86.7 125 #1-3

5 575-3-60 518 632 30.7 162 61.9 69.6 100 #3-3

7 380-3-50 342 418 38.3 212 77.1 86.7 125 #1-3

W-600

4 460-3-60 414 506 44.2 212 88.9 100.0 125 #1-3

5 575-3-60 518 632 35.4 168 71.3 80.2 100 #3-3

7 380-3-50 342 418 44.2 212 88.9 100.0 125 #1-3

W-800

4 460-3-60 414 506 54.8 241 110.1 123.8 150 #1-3

5 575-3-60 518 632 43.8 194 88.1 99.1 125 #1-3

7 380-3-50 342 418 54.8 241 110.1 123.8 150 #1-3

W-900

4 460-3-60 414 506 59.4 280 119.0 133.9 200 #000-3

5 575-3-60 518 632 47.6 225 95.4 107.3 150 #0-3

7 380-3-50 342 418 59.4 280 119.0 133.9 200 #000-3


Table 18b - WH-Series Electrical Specifications

WH-240

2 208-3-60 187 229 39.3 239 78.8 88.6 120 #2-3

4 460-3-60 414 506 20.0 125 40.2 45.2 60 #6-3

5 575-3-60 518 632 12.9 80 26.0 29.2 40 #8-3

7 380-3-50 342 418 20.0 125 40.2 45.2 60 #6-3

Nomenclature Identifier

Power Supply Compressors (each) FLA MCA Maximum

Fuse/Breaker Minimum Wire Size

V-ø-Hz MIN MAX RLA LRA Amps Amps Amps ga

WH-150

1 230-1-60 187 253 32.1 176 64.4 72.4 100 #4-2

2 208-3-60 187 229 20.7 156 41.6 46.8 60 #6-3

4 460-3-60 414 506 10.0 75 20.2 22.7 30 #10-3

5 575-3-60 518 632 8.2 54 16.6 18.7 30 #10-3

6 220-1-50 187 253 30.7 150 61.6 69.3 100 #4-2

7 380-3-50 342 418

WH-185

2 208-3-60 187 229 28.2 195 56.6 63.7 80 #4-3

4 460-3-60 414 506 12.9 95 26.0 29.2 40 #8-3

5 575-3-60 518 632 11.4 80 23.0 25.9 40 #8-3

7 380-3-50 342 418 12.9 95 26.0 29.2 40 #8-3

WH-300

2 208-3-60 187 229 43.9 245 88.0 99.0 140 #1-3

4 460-3-60 414 506 17.5 125 35.2 39.6 60 #6-3

5 575-3-60 518 632 14.6 100 29.4 33.1 40 #8-3

7 380-3-50 342 418 17.5 125 35.2 39.6 60 #6-3

WH-400

2 208-3-60 187 229 58.6 340 117.4 132.1 200 #00-3

4 460-3-60 414 506 28.6 173 57.4 64.6 80 #4-3

5 575-3-60 518 632 23.6 132 47.4 53.3 80 #4-3

7 380-3-50 342 418 28.6 173 57.4 64.6 80 #4-3

Electrical Specifications - WH-Series


Electrical Diagrams (W/WH-Series)




Refrigeration Circuit Diagrams (W/WH-Series)






Dimensions: Without Enclosure (Sizes 150-400)


Dimensions: With Enclosure (Sizes 150-400)


Dimensions: Without Enclosure (Sizes 500-900)


Dimensions: With Enclosure (Sizes 500-900)


Suction Line1 Temperature

Probe Connector

Heartbeat (flashes once per second)

The picture below shows the locations of the connectors and LED indicators of the control board. The control board offers many fea-tures such as short circuit protection on all digital outputs, Real Time Clock with super capacitor for backup power, WiFi capability, relay outputs for plenum heater control (if equipped), USB port, PIC32 microcontroller, etc.

Appendix A - GEN2 Control Board Description

High Pressure1

Sensor Connector

Remote (Outdoor)

EEV2 Connector

Local (Indoor) EEV1

Connector

Temperature Auto

Calibration Connector

High Pressure1

Fault Indicator

Low Pressure1

Sensor Connector

Temperature Connectors INDOOR OUTDOOR

IN OUT IN OUT

Short Circuit

Protectors

24VAC Power

Indicator

USB Connector

5VCD 12VDC 24VDC power indicators

Fault Indicator

BACnet MS/TP

Connector

PW

M C

hann

els

(4

out

1 in

)

Analog Inputs

AI0 to AI5

Power supplies for external sensors

for use with Analog Inputs

AI0 to AI5

Dig

ital O

utpu

ts

Indo

or F

an

Con

nect

or

The

rmos

tat

Con

nect

ions

Aqu

asta

t

Con

nect

ions

(O

ptio

nal)

Dig

ital I

nput

s F

low

S

witc

hes

Pha

se M

oni

tors

Plenum Heat

Airflow Reduction

Digital Outputs

MODBUS MS/TP

Connector

Low Pressure1

Fault Indicator

High Pressure2

Sensor Connector

High Pressure2

Fault Indicator

Low Pressure2

Sensor Connector

Low Pressure2

Fault Indicator

Suction Line2 Temperature

Probe Connector

Outdoor Temperature

Probe Connector

LCD Display

Connector

WiFi Connector


TABLE 19 - Control Board Connector Descriptions (Top)

Signal Description

HPS1 High Pressure Sensor 1 Measures Stage 1 discharge pressure.

LPS1 Low Pressure Sensor 1 Measures Stage 1 suction pressure.

EEV1 Local EEV Stage 1 EEV

TS1 Suction Line Temperature 1 Mounted to Stage 1 suction line.

EEV2 Remote EEV Stage 2 EEV.

TS2 Suction Line Temperature 2 Mounted to Stage 2 suction line.

HPS2 High Pressure Sensor 2 Measures Stage 2 discharge pressure.

LPS2 Low Pressure Sensor 2 Measures Stage 2 suction pressure.

HTS Outdoor Temperature Accessory.

CTS Auto Calibration Resistor in connector for auto-calibration reference (32°F—0°C).

I_IN Indoor Loop IN Mounted to pipe inside unit.

I_OUT Indoor Loop OUT Mounted to pipe inside unit.

O_IN Outdoor Loop IN Mounted to pipe inside unit.

O_OUT Outdoor Loop OUT Mounted to pipe inside unit.

Below is a picture of the control board . The tables following this picture describe the connections starting with the top of the board and working around the board counter clock-wise.


TABLE 20 - Control Board Connector Descriptions (Left Side)

Name Description

PWM_IN Signal for PWM IN Unused.

IN_SPARE Spare digital input Unused.

COM_IN Common for PWM IN Unused.

PWM4 PWM / 0-10VDC output IV2 signal for analog water valve for Indoor Loop.

PWM3 PWM / 0-10VDC output OV2 signal for analog water valve for Outdoor Loop.

PWM2 PWM / 0-10VDC output Unused.

PWM1 PWM / 0-10VDC output Unused.

GND Ground Ground for PWM channels.

HZC Hot Zone Circulator Unused.

CZC Cold Zone Circulator Unused.

ICR Internal Circulator Relay Signal for dry contact circulator control (CP1 And CP2).

DO_3 Digital output Unused.

DO_2 Hydronic Auxiliary Operates the hydronic auxiliary, pins CA and 1A (Setpoint control only).

DO_1 Digital output IV1 signal for 24VAC water valve or circulator control for Indoor Loop.

DO_0 Digital output OV1 signal for 24VAC water valve or circulator control for Outdoor Loop.

LC Loop common (ground) Ground for 24VAC water valve / circulator controls.

L6 Loop6 Unused.

L5 Loop5 Unused.

L4 Loop4 Unused.

L3 Loop3 Unused.

L2 Loop2 Unused.

L1 Loop1 Unused.

C(SH) Soaker Hose common Unused.

SH Soaker Hose Unused.


TABLE 21 - Control Board Connector Descriptions (Bottom)

Name Description

GND BACnet MS/TP Ground for shield if required.

B BACnet MS/TP RS-485.

A BACnet MS/TP RS-485.

STAGE1 Compressor Stage 1 Starts / stops the compressor.

STAGE2 Compressor Stage 2 Unused.

RV_#1 Reversing Valve#1 Off in heating mode, on in cooling mode.

RV_#2 Reversing Valve#2 Unused.

SOL#1 Solenoid#1 Unused.

SOL#2 Solenoid#2 Unused.

24VAC Power supply for board 24VAC power for control board.

COM Power supply for board GND for control board.

AI_5 Analog In Channel 5 0 to 5VDC or 4-20mA user settable with board jumper.





AI_0 Analog In Channel 0 Compressor current sensor.

GND Ground pin Ground for analog sensors.

GND Ground pin Ground for analog sensors.

5VDC Power for analog sensors Provides 5VDC power supply for sensors.



A MODBUS RS-485.

B MODBUS RS-485.

GND MODBUS Ground for shield if required.


TABLE 22 - Control Board Connector Descriptions (Right Side)

Signal Description

DI_1 Digital Input1 Unused.

DI_0 Digital Input0 Unused.

PM2 Phase Monitor2 Input from phase monitor.

PM1 Phase Monitor1 Input from phase monitor.

Y2A* Aquastat Stage2 Used only for external aquastat control.

RA* Aquastat Power (24VAC) Used only for external aquastat control.

Y1A* Aquastat Stage1 Used only for external aquastat control.

CA* Aquastat Power (Ground) Used only for external aquastat control.

2 Plenum Heat Stage2 Unused.

1 Plenum Heat Stage1 Unused.

C Plenum Heat Common Unused.

AR Ariflow Reductions Unused.

24VAC Power Accessory.

ODFLO Outdoor Flow Switch Accessory.

IDFLO Indoor Flow Swtich Accessory.

L Thermostat Lockout Indicator Unused.

E Thermostat Emergency Heat Unused.

O Thermostat Heat/Cool Connect external O signal here, energize to switch to cooling mode.

W2 Thermostat Auxiliary Heat Unused.

Y2 Thermostat Stage2 Unused.

Y1 Thermostat Stage1 Unused.

G Thermostat Fan Unused.

R Thermostat Power (24VAC) Unused.

C Thermostat Power (Ground) Unused. *NOTE: There is no need for an external aquastat for most systems, since the Setpoint Control Method provides built-in aquastat functionality.


6. The following window should appear, click on Install.

7. The installation will complete and the program should launch afterwards.

The PC Application MGL GEN2 PC APP is compatible with the following systems:

Windows 10 Windows 8 Windows 7, Windows Vista (32-bit) Windows Vista (64-bit) Windows XP Service Pack 2 Here are the installation steps for the PC APP, with screen-

shots from Windows XP. NOTE: An internet connection may be required if your

computer does not already have Miscrosoft Visual Basic PowerPaks 10.0 or .Net Framework.

1. Copy MGL GEN2 PC APP Vxxx.zip (or .rar) to the desk-

top. 2. Double click it to open the zip file. 3. Double click setup.exe. If the file was received via e-mail

then it may be named setup.abc, if so, change it back to .exe first.

4. The following window may appear asking to install Mi-crosoft Visual Basic PowerPaks 10.0. If it does, click on Accept to download and install the power packs. NOTE: If you already have an earlier version of Power-Paks installed, you may need to upgrade to Power-Paks10 for the application to work.

5. The following may appear asking to install .Net Frame-work. Click Accept. A re-start may be required once Framework has installed, if asked to reboot click YES. Continue once Windows starts again, you may have to run setup.exe again.

Appendix B - PC Application Installation


9. Click Next. The following window should appear.

10. Once complete the following window will appear, click Finish to complete the install. The USB connection should now work properly.

The PC Application MGL GEN2 PC APP is compatible with the following systems:

Windows 10, Windows 8, Windows 7, Windows Vista (32-bit), Windows Vista (64-bit) Windows XP Service Pack 2

Here are the installation steps for the USB driver, with screen-shots from Windows XP. When the USB cable from the GEN2 Control Board is plugged into the computer USB port for the first time, the Found New Hardware window should appear.

1. Copy MGL GEN2 USB INSTALLER.zip (or .rar) to the

desktop. 2. Double click it to open the zip file. 3. Double click on the MGL GEN2 USB Installer folder. 4. Verify that there is a file named USBDriverInstaller.exe.

If the file was received via e-mail then it may be named USBDriverInstaller.abc, if so, change it back to .exe.

5. Close the zip(or rar) file and then right click and Extract Here. This will place the MGL GEN2 USB Installer folder on the desktop.

6. Connect the a USB cable between the control board and the PC. The Found New Hardware window should ap-pear.

7. Select Install from a list or specific location (Advanced)

and then click Next.

8. Select Include this location in the search and then click Browse and select the MGL GEN2 USB Installer fold-er from the Desktop.

Appendix C - USB Driver Setup


Appendix D - Updating Firmware via PC App The following provides step by step instructions to update the firmware in the control board to the latest release. The firmware comes as a ZIP file named: MGT GEN2 Bootload Firmware Vxxx.zip where xxx is the version reference, e.g. 254 (version 2.54, this will be used for the remainder of this procedure). This file can be downloaded from our website www.nordicghp.com. Menu “For Dealers” --> “Download Software”; choose the latest (highest numbered) version. 1. Download the file to your PC; we recommend creating a folder system such as: Desktop\MGT GEN2 Bootload Firmware\V2.54 2. Unzip the file in the created folder. There will be three files: The firmware file: MGT_GEN2_V254.production.hex The programmer: PIC32UBL.exe Instruction sheet: USB Bootloader Instructions V2.pdf 3. Connect a USB (printer) cable from the PC to the control board. 4. Launch the PC APP (V1.30 or higher) and click on the Connect Button to connect to the control board.

9. Click on OK. The control board is now in bootloader mode and is ready to be programmed.

6. Click on the FIRMWARE UPDATE button. The following message will appear:

7. Click on YES. The following message will appear:

8. Click on OK. The following message will appear:

5. Go to menu Tools—Configuration Page

(picture to right)

10. Run PIC32UBL.exe. Click on the USB Enable check box. The screen should look like below.


13. Click on Erase—Program—Verify. Program-ming…. Wait while status bar shows progress. The messages should read as below when finished:

14. Programmed and verified. Click on Run Application. The messages should read:

16. Close the program. 17. WAIT APPROXIMATELY 10 SECONDS. This gives

the control board time to reset, initialize and re-connect to the PC USB port.

15. Wait until the programmer disconnects itself. The messages should read as follows:

18. Go back to the PC APP and click on the Connect button. Verify that the firmware version has been updated. Perform any configuration needed.

IMPORTANT NOTE: updating the firmware does not affect the configuration settings.

11. Click on Connect. The messages should read:

12. Click on Load Hex File. Select the MGT_GEN2_V254.production.hex file and click on Open. The messages should read:

If device fails to connect and an error message is displayed, the board’s bootloader may be older than v2.0. It will be necessary to instead update the firm-ware via jumper pins, as per the next section.


Appendix E - Updating Firmware via Jumper Pins The following provides step by step instructions to update the firmware in the control board to the latest release. The firmware comes as a ZIP file named: MGT GEN2 Bootload Firmware Vxxx.zip where xxx is the version reference, ie 255 (version 2.55, this will be used for the remainder of this procedure). This file can be downloaded from our website www.nordicghp.com. There is a table which lists the latest firmware by heat pump series, select the appropriate file to download. 1. Download the file to your PC, we recommend creating a folder system such as the following:

Desktop\MGT GEN2 Bootload Firmware\V2.55 2. Unzip the file in the created folder. There will be two files: The firmware file: MGT_GEN2_V255.production.hex The programmer: PIC32UBL.exe 3. Connect a USB cable to the control board. 4. Turn the power off to the unit. 5. Remove one of the black pin jumpers from just below the USB connector on the board and place in on the center pin pair of the EXPANSION header as shown below.

Place jumper here.

Remove a jumper from here.

6. Turn the power back on. The control board is now in boot loader mode and is ready to be programmed. 7. Run PIC32UBL.exe. Click on the USB Enable check box.

The screen should look like the picture below.

8. Click on Connect.

9. Click on Load Hex File. Select the MGT_GEN2_V255.production.hex file.

10. Click on Erase— Program—Verify

Programming…

11. “Programming completed. Verifi-cation successful.” Click on Disconnect and close the program.

14. Turn the power back on. Check that the LCD Display shows MGT GEN2 V2.55 on the top line.

IMPORTANT NOTE ON NEXT PAGE

12. Turn the power off.

13. Move the jumper back to where it was taken from.


IMPORTANT NOTE When updating from firmware V2.45 or V2.46 to V2.47 or higher, the following steps must be taken after the update as there are significant differences in the parameters used to operate the system. These steps do not need to be taken when updating from V2.47 to any higher version. 1. After completing the firmware update, use PC APP V117 or greater and connect to the unit via

the USB cable. 2. Go to menu TOOLS—RESET TO FACTORY DEFAULTS 3. Click on YES on the pop up warning window.

4. Click on OK on the pop up confirmation window.

5. Click on menu TOOLS—CONFIGURATION. 6. On the Configuration page, select the Model Series even if it already indicates the proper series as clicking on it will load the parameters for that series. 7. Select the Model Size and make any other changes that apply to the particular system setup such as Number of Stages, Control method, etc.


LIMITED WARRANTY

MARITIME GEOTHERMAL LTD. warrants that its commercial geothermal heat pumps shall be free from defects in materials and workmanship for a period of ONE (1) YEAR after the date of installation or for a period of ONE (1) YEAR AND SIXTY (60) DAYS after the date of shipment, whichever occurs first. This warranty covers all internal components of the heat pump. MARITIME GEOTHERMAL LTD. shall, at its option, repair or replace any part covered by this warranty. Defective parts shall be returned to MARITIME GEOTHERMAL LTD., transportation charges prepaid. Replacement of repaired parts and components are warranted only for the remaining portion of the original warranty period.

This warranty is subject to the following conditions:

1. The geothermal heat pump(s) must be properly installed and maintained in accordance with MARITIME GEOTHERMAL LTD.’s guidelines. Improper installation includes but is not limited to the following conditions: Indoor or outdoor loop flow lower than listed in engineering specification or as expressly

approved by MARITIME GEOTHERMAL LTD. Operating the heat pump either manually or with automated controls so that the unit is forced to

function outside its normal operating range or in a fashion which directly or indirectly leads to failure of components or the entire heat pump

Disabling of safety controls Insufficient loop antifreeze concentration for loop temperature, or antifreeze concentration

incorrectly set in control board Fouled heat exchangers due to poor water quality Failure to use strainers or clean them regularly Impact or physical damage sustained by the heat pump Poor refrigeration maintenance practices, including brazing without nitrogen flow, or using wrong

braze/flux Incorrect voltage or missing phase supplied to unit Unit modified electrically or mechanically from factory supplied condition Water quality outside of recommended limits (e.g. salinity or pH) Unit not mounted with supplied anti-vibration grommets or optional spring feet Corrosion damage due to corrosive ambient environment Failure due to excessive cycling caused by improper mechanical setup or improperly

programmed external controller Physical loads or pressures placed on unit from external equipment

2. The installer must complete the Startup Record and return it to MARITIME GEOTHERMAL LTD. within 21 days of unit installation.

3. For new construction, it is the responsibility of the building or general contractor to supply temporary heat to the structure prior to occupancy. Geothermal heat pumps are designed to provide heat only to the completely finished and insulated structure. Startup of the unit shall not be scheduled prior to completion of construction and final duct installation for validation of this warranty.

4. It is the customer's responsibility to supply the proper quantity and quality of water or properly sized ground loop with adequate freeze protection.

MARITIME GEOTHERMAL LTD.'s sole and exclusive liability shall be, at its option, to repair or replace any part or component which is returned by the customer during the applicable warranty period set forth above, provided that (1) MARITIME GEOTHERMAL LTD. is promptly notified in writing upon discovery by the customer that such part or component fails or is defective (2) the customer returns such part or component to MARITIME GEOTHERMAL LTD., transportation charges prepaid, within (30) thirty days of failure, and (3) MARITIME GEOTHERMAL LTD.'s examination of such component discloses to its satisfaction that such part or component has failed or is defective and was not caused by one of the circumstances listed above. MARITIME GEOTHERMAL LTD. will not be responsible for any consequential damages or labour costs incurred. In additional, MARITIME GEOTHERMAL LTD. will not be responsible for the cost of replacement parts purchased from a third party.