MBVC - Goodman MFG · 2017-11-09 · GOODMAN MANUFACTURING COMPANY, L.P. 19001 KERMIER ROAD WALLER, TEXAS 77484 (877) 254-4729 IMPORTANT SAFETY INSTRUCTIONS RECOGNIZE SAFETY SYMBOLS,

MBVCBLOWER CABINETINSTALLATION INSTRUCTIONS

© 2013, 2015-2017 Goodman Manufacturing Company, L.P.5151 San Felipe, Suite 500, Houston, TX 77056www.goodmanmfg.com -or- www.amana-hac.comP/N: IO-438D Date: April 2017

CONTENTS

is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.

INTRODUCTION .............................................................................. 1ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ..................................... 1CHECKING PRODUCT RECEIVED ........................................................... 2REPLACEMENT PARTS ...................................................................... 2ORDERING PARTS .......................................................................... 2IMPORTANT SAFETY INSTRUCTIONS ....................................................... 2RECOGNIZE SAFETY SYMBOLS, WORDS, AND LABELS ................................. 2GENERAL INFORMATION ................................................................... 3FEATURES .................................................................................... 3ACHIEVING LESS AIR LEAKAGE: .......................................................... 3CLEARANCES AND ACCESSIBILITY ......................................................... 3INSULATION ................................................................................. 3INSTALLATION INSTRUCTIONS .............................................................. 3BLOWER WITH CASED EVAPORATOR COIL INSTALLATION .............................. 3UPFLOW INSTALLATION .................................................................... 3COUNTERFLOW INSTALLATION ............................................................. 4HORIZONTAL INSTALLATION ............................................................... 4ELECTRICAL CONNECTIONS ................................................................ 5208/230 VOLT LINE CONNECTIONS .................................................... 5LOW VOLTAGE WIRING ................................................................... 5HIGH VOLTAGE FOAM TAPE .............................................................. 5OPERATION ON 208 VOLT SUPPLY ...................................................... 524 VOLT “LEGACY” THERMOSTAT WIRING ............................................ 624 VOLT DEHUMIDISTAT WIRING ....................................................... 6AUXILIARY ALARM SWITCH ............................................................... 6CIRCULATOR BLOWER ...................................................................... 7TROUBLESHOOTING ....................................................................... 10ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ................................... 10DIAGNOSTIC CHART ...................................................................... 10COMFORTNET™ SYSTEM ............................................................... 10OVERVIEW ................................................................................ 10AIRFLOW CONSIDERATION ............................................................... 10CONTROL WIRING ....................................................................... 11COMFORTNET™ SYSTEM ADVANCED FEATURES ..................................... 11DIAGNOSTICS ............................................................................. 13NETWORK TROUBLESHOOTING .......................................................... 13SYSTEM TROUBLESHOOTING............................................................. 13TROUBLESHOOTING INFORMATION: AIR HANDLER DIAGNOSTIC CODES ........... 14WIRING DIAGRAM ....................................................................... 19

IF AN “EC” ERROR IS ENCOUNTERED ON STARTUP, VERIFY THAT THE ELECTRIC HEATER DIP SWITCHES HAVE BEEN SET TO THE APPROPRIATE HEATER SIZE. SEE PAGES 7 AND 8 FOR THE HEATER KIT AIRFLOW DELIVERY AND DIP SWITCH SETTINGS.

NOTICE

THIS PRODUCT CONTAINS ELECTRONIC COMPONENTS WHICH REQUIRE A DEFINITEGROUND. PROVISIONS ARE MADE FOR CONNECTION OF THE GROUND. A DEDI-CATED GROUND FROM THE MAIN POWER SUPPLY OR AN EARTH GROUND MUSTBE PROVIDED.

INTRODUCTION

This booklet contains the installation and operating instructionsfor your modular blower cabinet. All warnings and precautionswithin this booklet must be observed. Improper installation canresult in problems ranging from noisy operation to property orequipment damages, dangerous conditions that could result ininjury or personal property damage and that are not covered bythe warranty. Read this booklet and any instructions packagedwith accessories prior to installation. Give this booklet to the userand explain its provisions. The user should retain this booklet forfuture reference.

NOTE: Upon start up in communicating mode the circuit boardmay display an “Ec” error. This is an indication that the dip switcheson the control board need to be configured in accordance withthe Electric Heating Airflow Table in this manual. Configuring thedip switches and resetting power to the unit will clear the errorcode.

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

NOTE: Discharge body’s static electricity before touching unit. Anelectrostatic discharge can adversely affect electrical components.

Use the following precautions during modular blower installationand servicing to protect the integrated control module from dam-age. By putting the modular blower, the control, and the personat the same electrostatic potential, these steps will help avoid ex-posing the integrated control module to electrostatic discharge.This procedure is applicable to both installed and uninstalled (un-grounded) blowers.

1. Disconnect all power to the blower. Do not touch theintegrated control module or any wire connected to thecontrol prior to discharging your body’s electrostatic chargeto ground.

2. Firmly touch a clean, unpainted, metal surface of themodular blower near the control. Any tools held in aperson’s hand during grounding will be discharged.

3. Service integrated control module or connecting wiringfollowing the discharge process in step 2. Use caution notto recharge your body with static electricity; (i.e., do notmove or shuffle your feet, do not touch ungroundedobjects, etc.). If you come in contact with an ungroundedobject, repeat step 2 before touching control or wires.

4. Discharge your body to ground before removing a newcontrol from its container. Follow steps 1 through 3 ifinstalling the control on a blower. Return any old or newcontrols to their containers before touching anyungrounded object.

2

CHECKING PRODUCT RECEIVED

Upon receiving the unit, inspect it for damage from shipment.Claims for damage, either shipping or concealed, should be filedimmediately with the shipping company. Check the unit modelnumber, specifications, electrical characteristics and accessoriesto determine if they are correct. In the event an incorrect unit isshipped, it must be returned to the supplier and must NOT beinstalled. The manufacturer assumes no responsibility for instal-lation of incorrectly shipped units.

REPLACEMENT PARTS

ORDERING PARTS

When reporting shortages or damages, or ordering repair parts,give the complete unit model and serial numbers as stamped onthe unit’s nameplate.Replacement parts for this appliance are available through yourcontractor or local distributor. For the location of your nearestdistributor, consult the white business pages, the yellow page sec-tion of the local telephone book or contact:

HOMEOWNER SUPPORTGOODMAN MANUFACTURING COMPANY, L.P.

19001 KERMIER ROADWALLER, TEXAS 77484

(877) 254-4729

IMPORTANT SAFETY INSTRUCTIONS

RECOGNIZE SAFETY SYMBOLS, WORDS, AND LABELS

The following symbols and labels are used throughout this manualto indicate immediate or potential hazards. It is the owner’s re-sponsibility to read and comply with all safety information andinstructions accompanying these symbols. Failure to heed safetyinformation increases the risk of property damage, product dam-age, personal injury or death.

HIGH VOLTAGE!DISCONNECT ALL POWER BEFORE SERVICING. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

WARNING

ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST, SERVICE OR REPAIR (HEREINAFTER, “SERVICE”) THE EQUIPMENT SPECIFIED IN THIS MANUAL SHOULD SERVICE THE EQUIPMENT. THE MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES. IF YOU SERVICE THIS UNIT, YOU ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY RESULT. IN ADDITION, IN JURISDICTIONS THAT REQUIRE ONE OR MORE LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL, ONLY LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT. IMPROPER INSTALLATION, ADJUSTMENT, SERVICING OR REPAIR OF THE EQUIPMENT SPECIFIED IN THIS MANUAL, OR ATTEMPTING TO INSTALL, ADJUST, SERVICE OR REPAIR THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER TRAINING MAY RESULT IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

CO can cause serious illness including permanent braindamage or death.

Advertencia especial para la instalación de calentadores ó manejadoras de aire en áreas cerradas como estacionamientos ó cuartos de servicio.

El monóxido de carbono puede causar enfermedades severas como daño cerebral permanente ó muerte.

Las emisiones de monóxido de carbono pueden circular a travésdel aparato cuando se opera en cualquier modo.

RISQUE D'EMPOISONNEMENT AU MONOXYDE DE CARBONE

Cette ventilation est nécessaire pour éviter le danger d'intoxicationau CO pouvant survenir si un appareil produisant du monoxyde de carbone continue de fonctionner au sein de la zone confinée.

3

GENERAL INFORMATION

The MBVC Blower Cabinets are used in combination with a casedevaporator coil. This combination of blower and coil functions asthe indoor part of a split air-conditioning system, and may bematched with a remote condensing or heat pump unit. The blowercabinet can also function as an electric furnace when used withan electric heater.

NOTE: The electric heating elements for electric furnaceinstallation are not shipped with the cabinet and are field-installed.

Systems should be properly sized by heat gain and loss calcula-tions made according to methods of the Air Conditioning Contrac-tors Association (ACCA) or equivalent. It is the contractor’s re-sponsibility to ensure the system has adequate capacity to heat orcool the conditioned space.

FEATURES

This modular blower is a part of the ComfortNet™ family of prod-ucts. It may be installed as part of a “legacy” system using a stan-dard 24 VAC thermostat or, with a ComfortNet™ thermostat kit,as part of a digitally communicating system. The ComfortNet™system simplifies wiring, provides enhanced setup features andelevates diagnostics capabilities.

ACHIEVING LESS AIR LEAKAGE:Ensure all the gaskets remain intact on surfaces as shipped withthe unit. Ensure upon installation that the plastic breaker cover isflush on with the access panel and access panel is flush with thecabinet. With these requirements satisfied, the unit achieves lessairflow leakage when tested in accordance with ASHRE Standard193.

• Cabinet air leakage less than 2.0% at 1.0 inch H2Owhen tested in accordance with ASHRAE standard 193.

• Cabinet air leakage less than 1.4% at 0.5 inch H2Owhen tested in accordance with ASHRAE standard 193.

CLEARANCES AND ACCESSIBILITY

The unit can be positioned for upflow, counterflow, horizontal rightor horizontal left operation. Zero clearance is allowed on all sidesfor combustible materials. Thirty-six inches should be allotted onthe door side for maintenance and service.To reduce risk of rusting, do not install the unit directly on theground or on a floor that is likely to be wet. In such environments,the unit must be elevated by use of a sturdy, nonporous material.

INSULATION

To ensure efficient operation, review the following precautions.• If the unit is located in an area with high ambient

temperature and/or high humidity, the air handler maybe subject to nuisance sweating of the casing. On theseinstallations, a wrap of 2” fiberglass insulation with avapor barrier is recommended.

• The factory recommends insulating the duct runningthrough any unconditioned spaces.

To reduce operating sound and vibration transmission use flexiblecanvas duct connections at the cabinet.

INSTALLATION INSTRUCTIONS

BLOWER WITH CASED EVAPORATOR COIL INSTALLATION

Secure the coil and blower together with the two connector platesand screws supplied in the blower bag assembly. Use one connec-tor plate and six screws on each side of the unit.If accessory electric heat is to be added, install now per the in-structions shipped with the heater kit.

Air Flow

Figure 1 - Coil and Blower Connection

Figure 2 - Upflow Application

UPFLOW INSTALLATION

For upflow installations, the blower cabinet must sit on top of thecoil cabinet (Figure 2).NOTE: All panels should be in place before installing the cabinet.

1. Place the blower and coil cabinet assembly upright on thereturn duct or duct opening. Ensure that there is amplesupport for the cabinet assembly and all attached ductwork.

2. Connect refrigerant and condensate drain connections perthe evaporator coil installation instructions. Ensurerefrigerant and drain lines do not interfere with serviceaccess to the unit.

3. Attach supply ductwork. Seal connections between unit andductwork as required to reduce/eliminate air leakage.

4. Make electrical connections as specified in ElectricalConnections section of this manual.

4

Figure 4 - Attic Installation

Figure 5 - Hanging Installation

Figure 6 - MBVC Motor Orientation

COUNTERFLOW INSTALLATION

For counterflow installations, the evaporator coil cabinet must siton top of the blower cabinet (Figure 3). NOTE: All panels shouldbe in place when installing the unit.

NOTE: Supply ductwork for counterflow applications, must beClass I. However, if combustible ductwork is used, sheet metalprotection is required.

Air Flow

1. Place the blower and coil cabinet assembly supply outleton the supply duct or duct opening. Ensure there is amplesupport for the unit and all attached ductwork.

2. Connect refrigerant and condensate drain connections perthe evaporator coil installation instructions. Ensurerefrigerant and drain lines do not interfere with serviceaccess to the unit.

3. Attach return ductwork. Seal connections between unit andductwork as required to reduce/eliminate air leakage.

4. Make electrical connections as specified in ElectricalConnections section of this manual.

HORIZONTAL INSTALLATION

For horizontal installations, the coil cabinet must be upstream ofthe blower cabinet (Figures 4 and 5). NOTE: All panels should bein place when installing the unit.1. Set the unit near its final installation place. The unit must be

supported along the entire length of the unit. Rubber isola-tion pads may be used to reduce sound and vibration trans-mission. Ensure there is ample support for the unit and allattached ductwork.

NOTE: Unit must be mounted with access panel facing the frontas shown in following diagrams.

2. If installed above a finished ceiling or living space, be sureto put a secondary drain pan under the entire unit, andpipe the drain separately from the main condensate drain.

3. Connect refrigerant and condensate drain connections perthe coil section installation instructions. Ensure refrigerantand drain lines do not interfere with service access to theunit.

Figure 3 - Counterflow Application

Support

4. Attach return and supply ductwork. Seal connections.5. Make electrical connections as specified in Electrical

Connections section of this manual.

Support

COUNTERFLOW AND HORIZONTAL APPLICATIONS

Loosen motor mount and rotate motor (See Figure 6). Be suremotor is oriented with the female connections on the casing point-ing down. If the motor is not oriented with the connections point-ing down, water could collect in the motor and cause prematurefailure.

NOTE: After rotating motor, tighten motor mount to secure motor.Be sure that the gap between the motor and the insulation is thesame as it was before loosening the motor mount. This will ensurethat the blower wheel is properly spaced inside the blower housing.

FEMALE CONNECTIONS

SIDE VIEW

WAR

NIN

GS

OF

TWA

RE V

ER

.

TOP

FRONT VIEW

5

ELECTRICAL CONNECTIONS

Consult the local power company and local codes before install-ing this unit. All wiring must be in accordance with the NationalElectrical Code as well as all local codes. Knockouts have beenprovided on side and top of the cabinet for the installation of theelectrical conduit. If the knockouts on the cabinet sides are usedfor electrical conduit, an adapter ring must be used in order tomeet UL1995 safety requirements. Use Minimum Circuit Ampac-ity and type of wire to determine proper wire size. The unit MUSTbe properly grounded. A ground lug is provided in the unit.Check all factory connections before connecting electrical powerto unit to ensure none were loosened or disconnected during ship-ping and handling.

208/230 VOLT LINE CONNECTIONS

If heater kits will not be installed, remove the proper size knock-out for the electrical conduit connection. Connect electrical con-duit to the unit using two washers to make an approved connec-tion. If the high voltage knockout is removed, please use the pro-vided foam tape to seal the opening with the conduit.The power supply wires must be connected to the red and blackpower wiring. Two wire nuts are provided in the bag assemblyfor this connection. Wrap the wire nuts with electrical tape. (In-sulated crimp type connectors, field supplied, may be substitutedfor the wire nuts and electrical tape provided proper size connec-tors are used.) A ground wire MUST be connected to the groundlug inside the unit.

LOW VOLTAGE WIRING

A 24V-control voltage connects the air handler to the room ther-mostat and condenser and must use low voltage wiring with cop-per conductors. A minimum 18 AWG wire must be used for in-stallations up to 150 feet. Low voltage wiring must be connectedthrough the top of the cabinet or either side. See the “Thermo-stat Wiring” section of this manual for typical low voltage wiringconnections. If the low voltage opening is being used, please re-place the pre-installed cap with the bushing provided in the lit-erature kit.

HIGH VOLTAGE!TO PREVENT PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, DISCONNECT THE ELECTRICAL POWER BEFORE ELECTRICALLY CONNECTING THE UNIT.

WARNING

TO AVOID THE RISK OF FIRE OR EQUIPMENT DAMAGE, USE COPPER CONDUCTORS.

WARNING

TO AVOID THE RISK OF PERSONAL INJURY, WIRING TO THE UNIT MUST BE PROPERLY POLARIZED AND GROUNDED.

CAUTION

ALL WIRING MUST COMPLY WITH APPLICABLE LOCAL AND NATIONAL CODES. TYPE AND LOCATION OF FUSED DISCONNECT SWITCH(ES) MUST COMPLY WITH ALL APPLICABLE CODES AND PROVIDE OVERCURRENT PROTECTION AS SHOWN ON THE NAMEPLATE.

WARNING

HIGH VOLTAGE FOAM TAPE1. If the high voltage knockout(s), are being used, wrap the

opening and wire with the provided foam tape. This shouldseal the opening.

RIGHT SIDE

LEFT SIDE

Figure 7 - High Voltage Grommets

OPERATION ON 208 VOLT SUPPLY

The unit transformer is factory connected for 230 V operation. Ifunit is to operate on 208 V, disconnect the red wire from terminal3 of the unit transformer and connect them to terminal 2 of theunit transformer.

6

24 VOLT “LEGACY” THERMOSTAT WIRING

NOTE: Wire routing must not interfere with the circulator bloweroperation or routine maintenance.

The optional usage of a dehumidistat allows the modular blower’scirculator blower to operate at a slightly lower speed during a com-bined thermostat call for cooling and dehumidistat call for dehu-midification. This lower blower speed enhances dehumidificationof the conditioned air as it passes through the AC coil. For properfunction, a dehumidistat applied to this modular blower must op-erate on 24 VAC and utilize a switch which opens on humidity rise.To install/connect a dehumidistat:1. Turn OFF power to modular blower2. Secure the dehumidistat neutral wire (typically the white

lead) to the screw terminal marked “DEHUM” on themodular blower’s integrated control module.

3. Secure the dehumidistat hot wire (typically the black lead)to the screw terminal marked “R” on the modular blower’sintegrated control module.

4. Secure the dehumidistat ground wire (typically the greenlead) to the ground screw on the modular blower. NOTE:Ground wire may not be present on all dehumidistats.

5. Turn ON power to modular blower.

To enable the dehumidification function, move the dehumidifica-tion dipswitch S7 from OFF to ON.To enable the dehumidification function, move the dehumidifica-tion dipswitch S7 from OFF to ON.

ON

OFF

Move to theON position

to enabledehumidification

S5 S6 S7 S8

Figure 8 - DipSwitches

AUXILIARY ALARM SWITCH

The control is equipped with two Auxiliary Alarm terminals labeledCAS which can be utilized with communicating mode setups (typi-cally used for condensate switch wiring but could be used withcompatible C02 sensors or fire alarms).Legacy mode useIn a legacy system (Non-communicating), this feature is not op-erational. Any auxiliary alarm switch must be used to interruptthe Y1 signal either to the indoor or outdoor unit.Communication mode useThis feature can be activated or deactivated through the thermo-stat user menus. An auxiliary alarm switch must be normally closedand open when the base pan’s water level in the evaporator coilreaches a particular level. The control will respond by turning offthe outdoor compressor and display the proper fault codes. If theswitch is detected closed for 30 seconds, normal operation re-sumes and the error message will be removed.

Air Handler IntegratedControl Module

Typical Single-Stage Cool, Single-Stage Heat Thermostat

Dehumidistat[Optional]

Remote Condensing Unit(Single-Stage AC)

NEU

HOT

1 2 R C G W1 Y1 Y2 O DEHUM

R C G W1 Y1

R C Y

Place Jumper Between Y1and O for Proper

Dehumidification Operationand Proper Ramping

Profile Operation

W2

Figure 9 - Typical Single-Stage Cooling withSingle-Stage Heating

Air Handler IntegratedControl Module

Typical Two-Stage Cool, Two-Stage Heat Thermostat


Remote Condensing Unit(Two-Stage AC)

NEU

HOT

1 2 R C G W1 W2 Y1 Y2 O DEHUM

R C G W1 W2 Y1 Y2

R C Y1 Y2

Place Jumper Between Y1and O for Proper

Dehumidification Operationand Proper Ramping

Profile Operation

Figure 10 - Typical Two-Stage Cooling withTwo Stage Heating

1 2 R CAir Handler

Integrated Control Module

Typical Single-Stage Cool,Single-Stage Heat

Heat Pump Thermostat


G W1 W2 Y1 Y2 O DEHUM

Remote Condensing Unit(Single-Stage HP)

NEU

HOT

W/ER C G Y1 O

R C W1 Y O

Figure 11 - Typical Single-Stage Heat Pump with

Auxiliary/Emergency Heating

1 2 R CAir Handler

Integrated Control Module

Typical Two-Stage Cool,Two-Stage Heat

Heat Pump Thermostat


G W1 W2 Y1 Y2 O DEHUM

Remote Condensing Unit(Two-Stage HP)

NEU

HOT

W/ER C G W2 Y1 Y2 O

R C W1 Y1 Y2 O

Figure 12 - Typical Two-Stage Heat Pump Heatingand Auxiliary/Emergency Heating

7

CIRCULATOR BLOWER

CAS

SWITCH

Figure 13 - Auxiliary Alarm Switch

This modular blower is equipped with a variable speed circulatorblower. This blower provides ease in adjusting blower speeds. TheSpecification Sheet applicable to your model provides an airflowtable, showing the relationship between airflow (CFM) and exter-nal static pressure (E.S.P.), for the proper selection of heating andcooling speeds. The heating blower speed is shipped set at “21kW”, and the cooling blower speed is set at “D”. These blowerspeeds should be adjusted by the installer to match the installa-tion requirements so as to provide the correct electric heating CFMand correct cooling CFM.Use the CFM LED (green) to obtain an approximate airflow quan-tity. The green CFM LED blinks once for each 100 CFM of airflow.1. Determine the tonnage of the cooling system installed with

the modular blower. If the cooling capacity is in BTU/hrdivide it by 12,000 to convert capacity to TONs.Example: Cooling Capacity of 30,000 BTU/hr.30,000/12,000 = 2.5 Tons

2. Determine the proper air flow for the cooling system. Mostcooling systems are designed to work with air flowsbetween 350 and 450 CFM per ton. Most manufacturersrecommend an air flow of about 400 CFM per ton.Example: 2.5 tons X 400 CFM per ton = 1000 CFM

1

2

1

2

1

2

1

2

OFF OFF OFF OFFON ON ON ON

Tap A Tap B

Cooling Air flow Speed Tap (*indicates factory setting)

Tap C Tap D*

3

4

+5%* -5%

Air flow Adjust Taps (*indicates factory setting)

+10% -10%


3

4

3

4

3

4

3

4

-5%

Air flow Adjust Taps (*indicates factory setting)

+10%


3

4

3

4

3

4

12

13

12

13

12

13

12

13


25% 50%*

Fan Only Selection (*indicates factory setting)

75% 100%

12

13

12

13

12

13

12

13


Fan Only Selection (*indicates factory setting)

Figure 14 - Airflow and Fan Selection

The cooling system manufacturer’s instructions must be checkedfor required air flow. Any electronic air cleaners or other devicesmay require a specific airflow; consult installation instructions ofthose devices for requirements.3. Knowing the modular blower model, locate the high stage

cooling air flow charts in the Specification Sheet applicableto your model. Look up the cooling air flow determined instep 2 and find the required cooling speed and adjustmentsetting.Example: A MBVC1200 modular blower installed with a2.5 ton air conditioning system. The air flow needed is1000 CFM. Looking at the cooling speed chart forMBVC1200, find the air flow closest to 1000 CFM. A coolingairflow of 1000 CFM can be attained by setting the coolingspeed to “C” and the adjustment to “Normal” (noadjustment).

4. Locate the blower speed selection DIP switches on theintegrated control module. Select the desired “cooling”speed tap by positioning switches 1 and 2 appropriately. Ifairflow adjustment is required, set dip switch S8 (trimenable) to ON (trim enable default is off). Then select thedesired “adjust” tap by positioning switches S3 and S4appropriately. Refer to the following figure for switchpositions and their corresponding taps. Verify CFM bycounting the number of times the green CFM LED blinks.

5. Continuous fan speeds that provide 25, 50, 75, and 100%of the furnace’s maximum airflow capability are selectablevia dip switches S12 and S13.If the furnace’s maximum airflow capability is 2000 CFMand 25% continuous fan spped is selected, the continuousfan speed will be 0.25 x 2000 CFM = 500 CFM.

6. The multi-speed circulator blower also offers severalcustom ON/OFF ramping profiles. These profiles may beused to enhance cooling performance and increase comfortlevel. The ramping profiles are selected using DIP switches5 and 6. Refer to Figure 14 for switch positions and theircorresponding taps. Refer to the bullet points below for adescription of each ramping profile. Verify profile selectionby counting the green CFM LED blinks and timing each stepof the ramping profile.

5

6

5

6

5

6

5

6


Tap A Tap B Tap C Tap D*

Figure 15 - Switch Positions and Taps

8

• Profile A provides only an OFF delay of one (1) minute at100% of the cooling demand airflow.

OFF100% CFM 100% CFM

1 min

OFF

Figure 16- Profile A

• Profile B ramps up to full cooling demand airflow by firststepping up to 50% of the full demand for 30 seconds. Themotor then ramps to 100% of the required airflow. A one(1) minute OFF delay at 100% of the cooling airflow.

50% CFM

1/2 min

100% CFM 100% CFM

1 minOFF OFF

Figure 17- Profile B

• Profile C ramps up to 82% of the full cooling demand airflowand operates there for approximately 7 1/2 minutes. Themotor then steps up to the full demand airflow. Profile Calso has a one (1) minute 100% OFF delay.

100% CFMOFF OFF

Figure 18 - Profile C

• Profile D ramps up to 50% of the demand for 1/2 minute,then ramps to 82% of the full cooling demand airflow andoperates there for approximately 7 1/2 minutes. The motorthen steps up to the full demand airflow. Profile D has a 1/2 minute at 50% airflow OFF delay.

OFFOFF

Figure 19 - Profile D

7. If an electric heater kit has been installed, determine theheater kilowatt (kW) rating. Find the heater size in the tablebelow. Set dipswitches 9, 10, and 11 for the installed heateras shown in the table below. The adjust setting (alreadyestablished by the cooling speed selection) also applies tothe electric heater kit airflow. Thus, the electric heaterairflow is adjusted by the same amount. Verify selectedCFM by counting the green CFM LED blinks.If an electric heater kit has not been installed, set dipswitches 9, 10, and 11 to any valid heater kit setting (seeairflow table for valid settings). This will prevent an Ec Errorcode from being displayed.

9

Figure 18 - Profile D

C ------- 7.5 min/82% 60 sec/100%

Profiles Pre-Run Short-Run OFF Delay

B ------- 30 sec/50% 60 sec/100%

Speed Selection Dip Switches

0140A00068-A

D 30 sec/50% 7.5 min/82% 30 sec/50%

A ------- -------- 60 sec/100%

To Set Airflow: (1) Select model and desired High Stage Cooling Airflow.Determine the corresponding tap (A,B,C,D). Set dip switches S1 and S2 tothe appropriate ON / OFF positions. (2) Select model and installed electricheater size. Set dip switches S9, S10, and S11 to the appropriate ON / OFFpositions. (3) If airflow adjustment is required set Trim Enable Switch S8 toON (OFF = 0% Trim) and set S3 and S4 to appropriate ON / OFF positions.Tap A is +5%, Tap B is -5%, Tap C is +10%, Tap D is -10%.To Set Comfort Mode: Select desired Comfort Mode Profile (see profilesabove). Set dip switches S5 and S6 to appropriate ON / OFF positions.Dehumidification: To enable, set dip switch S7 to ON. Cooling airflow willbe reduced to 85% of nominal value during cool call when Dehumcommand is present. To disable, set S7 to OFF.Continuous Fan Speed: Use dip switches S12 and S13 to select one of 4continuous fan speeds, Tap A is 25%. Tap B is 50%, Tap C is 75%, Tap Dis 100%.

A 800 1200B 1070 1600C 1200 1800D 1340 2000

A 670 1000B 800 1200C 940 1400D 1070 1600

A 400 600B 540 800C 670 1000D 800 1200

Model Low StageCool

Tap High StageCool

CoolSelectionSwitches

AdjustSelectionSwitches

ProfileSelectionSwitches

ContinuousFan

Speed

MBVC1200*

MBVC1600*

MBVC2000*

9

10


21 kW* 20 kW

Electric Heating Air Flow (*indicates factory setting)

15 kW 10 kW


8 kW 6 kW 5 kW 3 kW

11

9

10

11

9

10

11

9

10

11

9

10

11

9

10

11

9

10

11

9

10

11

Figure 20 - Dip Switches

NOTE: Upon start up in communicating mode the circuit boardmay display an “Ec” error. This is an indication that the dip switcheson the control board need to be configured in accordance withthe Electric Heating Airflow Table on page 7 of this manual. Con-figuring the dip switches and resetting power to the unit will clearthe error code.

10

FAULT RECALL

The integrated control module is equipped with a momentary push-button switch that can be used to display the last six faults on the7 segment LED display. The control must be in Standby Mode (nothermostat inputs) to use the feature. Depress the push-buttonfor approximately two seconds and less than five seconds. TheLED display will then display the six most recent faults beginningwith the most recent fault and decrementing to the least recentfault. The faults may be cleared by depressing the button forgreater than five seconds.

NOTE: Consecutively repeated faults are displayed a maximum ofthree times.

COMFORTNET™ SYSTEM

OVERVIEW

The ComfortNet™ system (or CT™ system) is a system that includesa ComfortNet™ compatible modular blower and air conditioner orheat pump with a CTK04 thermostat. Any other system configura-tions are considered invalid ComfortNet™ systems and must beconnected as a traditional (or legacy) system (see Electrical Con-nections - 24 Volt Thermostat Wiring for wiring connections).A ComfortNet™ heating/air conditioning system differs from alegacy/traditional system in the manner in which the indoor unit,outdoor unit and thermostat interact with one another. In a tradi-tional system, the thermostat sends commands to the indoor andoutdoor units via analog 24 VAC signals. It is a one-way communi-cation path in that the indoor and outdoor units typically do notreturn information to the thermostat.In a ComfortNetTM system, the indoor unit, outdoor unit, andthermostat “communicate” digitally with one anothercreating a two-way communications path. The thermostatsends commands to the indoor and outdoor units, and alsorequests and receives information from both the indoor andoutdoor units.

Two-way digital communications is accomplished using only twowires. The thermostat and subsystem controls are powered with24 VAC Thus, a maximum of 4 wires between the equipment andthermostat is all that is required to operate the system.

AIRFLOW CONSIDERATION

Airflow demands are managed differently in a fully communicat-ing system than they are in a legacy wired system. The systemoperating mode (as determined by the thermostat) determineswhich unit calculates the system airflow demand. If the indoorunit is responsible for determining the airflow demand, it calcu-lates the demand and sends it to the ECM motor. If the outdoorunit or thermostat is responsible for determining the demand, itcalculates the demand and transmits the demand along with afan request to the indoor unit. The indoor unit then sends thedemand to the ECM motor. Figure 21 lists the variousComfortNet™ systems, the operating mode, and airflow demandsource.

TROUBLESHOOTING

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

NOTE: Discharge body’s static electricity before touching unit. Anelectrostatic discharge can adversely affect electrical components.

Use the following precautions during modular blower installationand servicing to protect the integrated control module from dam-age. By putting the modular blower, the control, and the personat the same electrostatic potential, these steps will help avoid ex-posing the integrated control module to electrostatic discharge.This procedure is applicable to both installed and uninstalled (un-grounded) blowers.

1. Disconnect all power to the blower. Do not touch theintegrated control module or any wire connected to thecontrol prior to discharging your body’s electrostatic chargeto ground.

2. Firmly touch a clean, unpainted, metal surface of themodular blower near the control. Any tools held in aperson’s hand during grounding will be discharged.

3. Service integrated control module or connecting wiringfollowing the discharge process in step 2. Use caution notto recharge your body with static electricity; (i.e., do notmove or shuffle your feet, do not touch ungroundedobjects, etc.). If you come in contact with an ungroundedobject, repeat step 2 before touching control or wires.

4. Discharge your body to ground before removing a newcontrol from its container. Follow steps 1 through 3 ifinstalling the control on a blower. Return any old or newcontrols to their containers before touching anyungrounded object.

DIAGNOSTIC CHART

Refer to the Troubleshooting Chart at the end of this manual forassistance in determining the source of unit operational problems.The 7 segment LED display will provide any active fault codes. Anarrow printed next to the display indicates proper orientation (ar-row points to top of display). See following image.

HIGH VOLTAGE!TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY SERVICE OR MAINTENANCE.

WARNING

7 SegmentDiagnosticDisplay

Figure 21 - Diagnostic Display

11

dium, or high continuous fan speed. The low, medium, and highfan speeds correspond to 25%, 50%, and 75%, respectively, of theair handlers’ maximum airflow capability. During continuous fanoperation, the thermostat sends a fan request along with the con-tinuous fan demand to the air handler. The air handler, in turn,sends the demand to the ECM motor. The ECM motor deliversthe requested continuous fan airflow.

CONTROL WIRING

NOTE: Refer to section Electrical Connections for 208/230 voltline connections to the modular blower.

NOTE: A removable plug connector is provided with the control tomake thermostat wire connections. This plug may be removed,wire connections made to the plug, and replaced. It is STRONGLYrecommended that you do no connect multiple wires into a singleterminal. Wire nuts are recommended to ensure one wire is usedfor each terminal.

Typical 18 AWG thermostat wire may be used to wire the systemcomponents. 150 feet is the maximum recommended length ofwire recommended between indoor and outdoor unit, or betweenindoor unit and thermostat.Only data lines 1 and 2 are required between the indoor and out-door units. The included 40VA, 208/230 VAC to 24 VAC transformermust be installed in the outdoor unit to provide 24 VAC power tothe outdoor unit’s electronic control. See kit instructions for mount-ing and wiring instructions.

Figure 23 - System Wiring

COMFORTNET™ SYSTEM ADVANCED FEATURES

The ComfortNet™ system permits access to additional system in-formation, advanced setup features, and advanced diagnostic/troubleshooting features. These advanced features are organizedinto a menu structure. See the following MODULAR BLOWER AD-VANCED FEATURES MENUS section for layout of menu shortcuts.

SystemSystem Operating

ModeAirflow Demand Source

Cooling Air Conditioner

Heating Air Handler

Continuous Fan Thermostat

Cooling Heat Pump

Heat Pump Heating Only

Heat Pump

HP + Electric Heat Strips

> of Heat Pump or Air Handler Demand

Electric Heat Strips Only

Air Handler

Continuous Fan Thermostat

Air Conditioner + Air Handler

Heat Pump + Air Handler

Figure 22 - Airflow Demands

For example, assume the system is a heat pump matched with anair handler. With a call for low stage cooling, the heat pump willcalculate the system’s low stage cooling airflow demand. The heatpump will then send a fan request along with the low stage coolingairflow demand to the air handler. Once received, the air handlerwill send the low stage cooling airflow demand to the ECM motor.The ECM motor then delivers the low stage cooling airflow. See theapplicable ComfortNet™ air conditioner or heat pump installationmanual for the airflow delivered during cooling or heat pump heat-ing.In continuous fan mode, the CTK0* thermostat provides the airflowdemand. The thermostat may be configured for a low, medium, orhigh continuous fan speed. The low, medium, and high fan speedscorrespond to 25%, 50%, and 75%, respectively, of the air handlers’maximum airflow capability. During continuous fan operation, thethermostat sends a fan request along with the continuous fan de-mand to the air handler. The air handler, in turn, sends the demandto the ECM motor. The ECM motor delivers the requested continu-ous fan airflow.

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12

MODULAR BLOWER ADVANCED FEATURES MENU

Submenu Item Indication/User Modifiable Options Comments

Fault 1 (FAULT #1) Most recent fault For display only

Fault 2 (FAULT #2) Next most recent fault For display only




Fault 6 (FAULT #6) Least recent fault For display onlyClear Fault History (CLEAR) NO or YES Selecting “YES” clears the fault

history

NOTE: Consecutively repeated faults are shown a maximum of 3 times

DIAGNOSTICS

Submenu Item Indication (for Display Only; not User Modifiable)

Model Number (MOD NUM) Displays the modular blower model number

Serial Number (SER NUM) Displays the modular blower serial number (Optional)Software (SOFTWARE) Displays the application software revision

IDENTIFICATION

Submenu Item User Modifiable Options Comments

Heat Airflow Trim (HT TRM)

-10% to +10% in 2% increments, default is 0%

Trims the heating airflow by the selected amount.

Auxiliary Alarm ON / OFF Enable or disable Auxiliary Alarm input

SET-UP

Submenu Item Indication (for Display Only; not User Modifiable)Mode (MODE) Displays the current modular blower operating mode

CFM (CFM) Displays the airflow for the current operating mode

STATUS

13

DIAGNOSTICS

Accessing the modular blower’s diagnostics menu provides readyaccess to the last six faults detected by the modular blower. Faultsare stored most recent to least recent. Any consecutively repeatedfault is stored a maximum of three times. Example: A cloggedreturn air filter causes the modular blower’s motor to repeatedlyenter a limiting condition. The control will only store this fault thefirst three consecutive times the fault occurs.

NOTE: It is highly recommended that the fault history be clearedwhen performing maintenance or servicing the modular blower.

NETWORK TROUBLESHOOTING

The ComfortNet™ system is a fully communicating system, andthus, constitutes a network. Occasionally the need to trouble-shoot the network may arise. The integrated control has someon-board tools that may be used to troubleshoot the network.

These tools are: red communications LED, green receive (Rx) LED,and LEARN button.

• Red communications LED – Indicates the status of thenetwork. The table below indicates the LED status andthe corresponding potential problem.

• Green receive LED – Indicates network traffic. The tablebelow indicates the LED status and the correspondingpotential problem.

• Learn button – Used to reset the network. Depress thebutton for approximately 2 seconds to reset the network.

SYSTEM TROUBLESHOOTING

NOTE: Refer to the instructions accompanying the CT™ compatibleoutdoor AC/HP unit for troubleshooting information.

Refer to the Troubleshooting Chart in the Appendix for a listing ofpossible modular blower error codes, possible causes and correc-tive actions.

Communciations Status LED’s

LED LED Status Indication Possible Causes Corrective Action(s) Notes & Cautions Off Normal condition None None None

1 Flash Communications Failure

Communications Failure Depress Learn Button Verify that bus BIAS and TERM dipswitches are in the ON position.

Depress once quickly for a power-up reset

Depress and hold for 2 seconds for an out-of-box reset

Red Communications

LED

2 Flashes Out-of-box reset Control power up Learn button depressed

None None

Off No power Communications error

No power to modular blower

Open fuse Communications error

Check fuses and circuit breakers; replace/reset

Replace blown fuse Check for shorts in low voltage wiring in modular blower/system

Reset network by depressing learn button

Check data 1/ data 2 voltages

Turn power OFF prior to repair.

See Network Troubleshooting section.

1 Steady Flash

No network found Broken/ disconnected data wire(s)

Modular blower is installed as a legacy/ traditional system

Check communications wiring (data 1/ data 2 wires)

Check wire connections at terminal block

Verify modular blower installation type (legacy/ traditional or communicating)


Turn power OFF prior to repair

Verify wires at terminal blocks are securely twisted together prior to inserting into terminal block

See Network Troubleshooting section

Rapid Flashing

Normal network traffic

Control is “talking” on network as expected

None None

Green Receive LED

On Solid Data 1/ Data 2 miss-wire

Data 1 and data 2 wires reversed at modular blower, thermostat, or CT™ compatible outdoor AC/HP

Short between data 1 and data 2 wires

Short between data 1 or data 2 wires and R (24VAC) or C (24VAC common)

Check communications wiring (data 1/ data 2 wires)

Check wire connections at terminal block


Turn power OFF prior to repair

Verify wires at terminal blocks are securely twisted together prior to inserting into terminal block

See Network Troubleshooting section

14

TROUBLESHOOTING INFORMATION: AIR HANDLER DIAGNOSTIC CODES

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em

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ca

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pow

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po

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16

Co

mfo

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et™

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her

mo

stat

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ly

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pto

ms

of

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mfo

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at)

7-S

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LE

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tes

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auti

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LE

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all

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lls

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essage.

b0

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run

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b0

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tor.

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LE

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lls

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b1

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oto

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TO

R

CO

MM

b1

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blo

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tor.

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gra

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on

tro

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.

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tegra

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ontr

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LE

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lls

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b2

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in

sh

are

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po

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TO

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b2

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er

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sert

me

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EF

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od

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D d

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3 e

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.

b3

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p

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TO

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LIM

ITS

b3

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cke

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estr

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du

ctw

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nd

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ize

d d

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igh a

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ee

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sta

llatio

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uctio

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for

insta

llatio

n r

eq

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me

nts

.

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urn

pow

er

OF

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to

rep

air.

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od

ula

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low

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.

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ted c

ontr

ol m

odule

LE

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therm

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all

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om

fort

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therm

osta

t scro

lls

“Check A

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essage.

b4

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moto

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igh

curr

ent.

MO

TO

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TR

IPS

b4

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oto

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adin

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sudden c

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air

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for

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17

Co

mfo

rtN

et™

T

her

mo

stat

On

ly

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pto

ms

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erat

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egac

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mfo

rtN

et™

Th

erm

ost

at)

7-S

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ent

LE

D

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des

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ault

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crip

tio

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Message

Code

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ssib

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ause

s C

orr

ecti

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ctio

ns

No

tes

& C

auti

on

s

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od

ula

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low

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ontr

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LE

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dia

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om

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lls

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essage.

b5

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o s

tart

10

consecutive t

imes.

MT

R

LCK

D

RO

TO

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b5

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ou

sin

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eiz

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er

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tor

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gs.

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aile

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tor.

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l/m

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ne

cessary

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r sh

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erm

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t scro

lls

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essage.

b6

C

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ve

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nd

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volta

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itio

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sh

uts

do

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du

e

to o

ve

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mp

era

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itio

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.

MO

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VO

LTS

b6

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with

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sta

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for

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llatio

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eq

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nts

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om

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th

erm

osta

t scro

lls

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essage.

b7

C

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blo

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en

ou

gh

info

rmatio

n t

o

op

era

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oto

r fa

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o s

tart

40

consecutive t

imes.

MO

TO

R

PA

RA

MS

b7

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or

with

in

tegra

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con

trol

module

.

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oto

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locked r

oto

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nd

itio

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heck inte

gra

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ontr

ol

mo

du

le.

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ontr

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p

op

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are

d

da

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err

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bo

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fo

r d

eta

ils.

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heck f

or

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oto

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itio

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se

e e

rro

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de

a

bo

ve

fo

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urn

pow

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ep

lace w

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corr

ect

repla

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ent

part

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ory

card

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the

sp

ecific

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de

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sert

me

mo

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ard

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EF

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ing p

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.

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ory

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efo

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rem

ovin

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ory

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.

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od

ula

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pe

rfo

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tag

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b9

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irflo

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LOW

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FLO

W

b9

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locke

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18

0140A00070-A

7 SEGMENT LED (characters will alternate)

DESCRIPTION OF CONDITION

(no display) INTERNAL CONTROL FAULT / NO POWEROn STANDBY, WAITING FOR INPUTSEc HEATER KIT TOO LARGE, TOO SMALL, OR NO MATCHE5 FUSE OPENEF AUXILIARY SWITCH OPENd0 DATA NOT ON NETWORKd1 INVALID DATA ON NETWORKd4 INVALID MEMORY CARD DATAb0 BLOWER MOTOR NOT RUNNINGb1 BLOWER MOTOR COMMUNICATION ERRORb2 BLOWER MOTOR HP MISMATCH

b3BLOWER MOTOR OPERATING IN POWER, TEMP., OR SPEED LIMIT

b4 BLOWER MOTOR CURRENT TRIP OR LOST ROTORb5 BLOWER MOTOR ROTOR LOCKEDb6 OVER/UNDER VOLTAGE TRIP OR OVER TEMPERATURE TRIPb7 INCOMPLETE PARAMETER SENT TO MOTORb9 LOW INDOOR AIRFLOWC1 LOW STAGE COOL - LEGACY MODE ONLYC2 HIGH STAGE COOL - LEGACY MODE ONLYP1 LOW STAGE HEAT PUMP HEAT - LEGACY MODE ONLYP2 HIGH STAGE HEAT PUMP HEAT - LEGACY MODE ONLYh1 EMERGENCY HEAT LOW - COMMUNICATING MODE ONLYh2 EMERGENCY HEAT HIGH - COMMUNICATING MODE ONLYFC FAN COOL - COMMUNICATING MODE ONLYFH FAN HEAT - COMMUNICATING MODE ONLYF FAN ONLY

H1 ELECTRIC HEAT LOWH2 ELECTRIC HEAT HIGH

dFDEFROST - COMMUNICATING MODE ONLY (Note: defrost is displayed as H1 in a legacy setup)

GREEN CFM LED - EACH FLASH REPRESENTS 100CFM (USE FOR AIRFLOW APPROXIMATION ONLY) - EXAMPLE: 8 FLASHES = 800CFM


19Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.

HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING.MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SOMAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

WARNING

WIRING DIAGRAM

CO

NT

FA

N

4 CIRCUIT HEA TERCONNECTOR

COM

CIRCULATOR BLOWER

11

SEE NOTE 6

CIRC ULAT OR

CIRCU LATOR

RDWH

TOMICRO

R

CAS (1)

AIR

230 VAC

7 SEGMENTDIAGNOSTIC

DISPLAY

PL1

SEENOTE 7

O

DEHUM

4C

IRC

UIT

MO

TO

RC

ON

NE

CT

OR

24 VAC

RD

4

BLWRLEARN

5

DIP SWITCHES

AIR

40 VA

2

3 1

2

8

40 VA TRANS FORMER, SEE N OTE 1

L1

9 INDOOR

7

24 VAC

4

BK

1

5BL

PL2

FUSE 3 A

208/230 VAC

GRND

ECM MOTORHARNESS

GRND

6

L2

6

L1

COM

BR

G

G

INTEGRATED CONTROL MODULE

O4

3

W2

BK

3

1

24V THERMOSTATCONNECTIONS

COM

W2

L2

DISCONNECT

SEE NOTE 5

2

BL

Y2

BK

TRC

1

3

GRND (4)

2

2

IND OOR

9

RD

TH

+VDC (1)

Y1

208 VAC

TH

BK

Y2

RX (2)

RD GRND

4

24 V 3 A

W1

GRND

4

GN

Y1

R

FAULTRECALL

W1

8

5

W1 (1)

C

RD

DEHUM

TX (3)

BL

TWO-STAGE INTEGRATED CONTROL MODULE

3

GRND

HEAT 2 COIL/ R2

RD

TRANSFORMER24

VT

HE

RM

OS

TA

TC

ON

NE

CT

ION

S

HEAT 1 COIL/R1

GN

7

TR

2

BLW R

EQUIPMENT GRND

TERMINAL

PLUG CONNECTION

LOW VOLTAGE FIE LD

HI VOLTAGE FIE LD

JUNCTION

HI VOL TAGE (230V)

PROT. DEV ICE

INTEGRATED CONTROL

LOW VOLTAGE (24V)

FIELD SPLICE

INTE RNAL TO

FIELD GRND

OVERCUR RENT

BK ---- BLACK

OR ---- ORANGE

BL ---- BLUE

PK ---- PINK

GY ---- GRAY

RD ---- RED

WH ---- WHITE

PU ---- PURPLE

YL ---- YELLOW

BR ---- BROWN

COLOR CODES:

GN ---- GREEN

NOTES:

1. PLACE RED WIRES ON TRANSFORMER TERMIN AL 2 FOR 208 VAC OPERATION.

2. MANUFACTURER'S SPECIFIED RE PLACE MENT PA RTS MU ST BE U SED WHEN SERVICING.

3. IF ANY OF THE ORIGINAL WIRES AS SU PPLIED WITH THIS UNIT MU ST BE R EPLACED, IT MU ST BE R EPLACED WITH WIR ING M ATERI AL HAVING A TEMPER ATURE R ATING OF AT LEAST 105°C. USE CO PPER CON DUCTORS O NLY.

4. UNIT MUST BE PER MANE NTLY GROUNDED AN D CONF ORM TO N.E.C A ND LOC AL CODES.

5. TO RECA LL THE LAST 6 FA ULTS, MOST RECENT TO LEA ST RECENT, D EPRE SS SWITCH FOR MORE T HAN 2 SECONDS WHILE IN STANDBY (NO THERM OSTAT INPU TS)

6. RED STATUS LED PROVIDES N ETWORK STATUS. GREEN RX LED IND ICATES NETWORK TRAFFIC. USE LEARN B UTTON TO RES ET NETWORK.

7. DISCARD C ONNECTOR PL1 WHEN INS TALLING O PTIONAL H EAT KI T.

8. THE CONDENS ATE ALARM SW ITCH (CA S) TERMIN ALS CAN ONLY BE UTILIZED W ITH CO MMUN ICATING MODE S ETUPS AND MU ST BE ENA BLED WITH A COMMUNIC ATING THERM OSTAT. THIS F EATURE IS NOT OPER ATIONAL W ITH LEGACY SY STEMS.

USE N.E.C CLA SS 2 WIRE.0140A00244-B

1

2

3

CONDENSATESWITCH

CAS (2)

W2 (2)

FUSE

CASSEE NOTE 8

CFM LED

STATUSLED

SEE NOTE 6

SEE NOTE 6RX LED

HTR

KIT

(KW

)

CO

OL

AF

PR

OF

ILE

DE

HU

ME

NA

BLE

TR

IME

NA

BLE

TR

IM%

AF

SE

LEC

T

RESISTOR

S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13

4 3 2 1

C W2 W1

BL

GY

BK

RD

20

AIR HANDLERAIR HANDLER HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONS

We strongly recommend a bi-annual maintenance checkup be performedbefore the heating and cooling seasons begin by a qualified servicer.

REPLACE OR CLEAN FILTER

IMPORTANT NOTE: Never operate unit without a filter installedas dust and lint will build up on internal parts resulting in loss ofefficiency, equipment damage and possible fire.An indoor air filter must be used with your comfort system. Aproperly maintained filter will keep the indoor coil of your com-fort system clean. A dirty coil could cause poor operation and/orsevere equipment damage.Your air filter or filters could be located in your furnace, in a blowerunit, or in “filter grilles” in your ceiling or walls. The installer ofyour air conditioner or heat pump can tell you where your filter(s)are, and how to clean or replace them.Check your filter(s) at least once a month. When they are dirty,replace or clean as required. Disposable type filters should bereplaced. Reusable type filters may be cleaned.You may want to ask your dealer about high efficiency filters. Highefficiency filters are available in both electronic and non-electronictypes. These filters can do a better job of catching small airborneparticles.

MOTORS

Indoor and outdoor fan motors are permanently lubricated anddo not require additional oiling.

ALUMINUM INDOOR COIL CLEANING(QUALIFIED SERVICER ONLY)This unit is equipped with an aluminum tube evaporator coil. Thesafest way to clean the evaporator coil is to simply flush the coilwith water. This cleaning practice remains as the recommendedcleaning method for both copper tube and aluminum tube resi-dential evaporator coils.It has been determined that many coil cleaners and drain pantablets contain corrosive chemicals that can be harmful to alumi-num tube and fin evaporator coils. Even a one-time applicationof these corrosive chemicals can cause premature aluminumevaporator coil failure. Any cleaners that contain corrosive chemi-cals including, but not limited to, chlorine and hydroxides, shouldnot be used.

An alternate cleaning method is to use one of the products listedin TP-109* to clean the coils. The cleaners listed are the only agentsdeemed safe and approved for use to clean round tube aluminumcoils. TP-109 is also available on the web site in Partner Link >Service Toolkit.NOTE: Ensure coils are rinsed well after use of any chemical clean-ers.

BEFORE YOU CALL YOUR SERVICER• Check the thermostat to confirm that it is properly set.• Wait 15 minutes. Some devices in the outdoor unit or in

programmable thermostats will prevent compressoroperation for awhile, and then reset automatically. Also,some power companies will install devices which shut offair conditioners for several minutes on hot days. If you waitseveral minutes, the unit may begin operation on its own.

• Check the electrical panel for tripped circuit breakers orfailed fuses. Reset the circuit breakers or replace fuses asnecessary.

• Check the disconnect switch near the indoor furnace orblower to confirm that it is closed.

• Check for obstructions on the outdoor unit . Confirm that ithas not been covered on the sides or the top. Remove anyobstruction that can be safely removed. If the unit iscovered with dirt or debris, call a qualified servicer to cleanit.

• Check for blockage of the indoor air inlets and outlets.Confirm that they are open and have not been blocked byobjects (rugs, curtains or furniture).

• Check the filter. If it is dirty, clean or replace it.• Listen for any unusual noise(s), other than normal operating

noise, that might be coming from the outdoor unit. If youhear unusual noise(s) coming from the unit, call a qualifiedservicer.

Documents

MBVC - Goodman MFG · 2017-11-09 · GOODMAN MANUFACTURING COMPANY, L.P. 19001 KERMIER ROAD WALLER, TEXAS 77484 (877) 254-4729 IMPORTANT SAFETY INSTRUCTIONS RECOGNIZE SAFETY SYMBOLS,