3-6 Tons Submittal Data - WaterFurnace3-6 Tons Submittal Data English Language/IP Units SD2750AU 09/18. ... W a te r Fl o w R e gu la to r M odulatin g Valv e Fl o w M e te r Re v.:

COMMERCIALWater Source/Geothermal Heat Pump

3-6 Tons

Submittal Data

English Language/IP Units

SD2750AU 09/18

WaterFurnace works continually to improve its products. As a result, the design and specifi cations of each product at the time of order may be changed without notice. Please contact WaterFurnace at 1-888-929-2837 for latest design and specifi cations. Purchaser’s approval of this data set signifi es that the equipment is acceptable under the provisions of the job specifi cation. Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties, but are merely WaterFurnace’s opinion or commendation of its products. The latest version of this document is available at www.waterfurnace.com.

Contractor: P.O.:

Engineer:

Project Name: Unit Tag:

SD2750AU 09/18 2

Versatec Variable Speed Series3-6 Tons 60Hz

Model Nomenclature

Electrical AvailabilityVS ECM

VoltageModel

036 048 060 072

208-230/60/1 • • • •

208-230/60/3 • • • •

460/60/3 • • • •

575/60/3 N/A N/A N/A N/A

8/25/2016Legend:NA = Not Available• = Voltage available in this size

Vintage* – Factory Use

Non-Standard OptionsSS – Standard

Drain Pan Option0 – Composite, No Secondary Connection1 – Composite, Secondary Connection2 – Stainless Steel, No Secondary Connection3 – Stainless Steel, Secondary Connection

Air Coil Option3 – All-Aluminum, Uncoated 4 – All-Aluminum, AlumiSealTM

Filter OptionA – 1" MERV 4B – 2" MERV 13

Cabinet Option0 – Unpainted Cabinet, Filter Rail1 – Painted Cabinet, Filter Rail2 – Unpainted Cabinet, 4-Sided Filter Rack3 – Painted Cabinet, 4-Sided Filter Rack

Electrical OptionN – NoneD – Disconnect

Aurora Advanced Control OptionA – StandardE – AuroraTM DDCF – AuroraTM DDC w/Lon

Water Control OptionN – NoneR – Water Flow RegulatorV – Modulating ValveF – Flow Meter

Rev.:

Vintage* – Factory Use–

Non-Standard OptionsSS – Standard–

Drain Pan Option0 – Composite– , No Secondary Connection1 – Composite– , Secondary Connection2 – Stainless Steel– , No Secondary Connection3 – Stainless Steel– , Secondary Connection

Air Coil Option3 – All-Aluminum– , Uncoated 4 – All-Aluminum– , AlumiSealTM

Filter OptionA – 1– " MERV 4B – 2– " MERV 13

Cabinet Option0 – Unpainted Cabinet– , Filter Rail1 – Painted Cabinet– , Filter Rail2 – Unpainted Cabinet– , 4-Sided Filter Rack3 – Painted Cabinet– , 4-Sided Filter Rack

Electrical OptionN – None–D – Disconnect–

Aurora Advanced Control OptionA – Standard–E – Aurora– TM DDCF – Aurora– TM DDC w/Lon

Water Control OptionN – NoneR – Water Flow RegulatorV – Modulating ValveF – Flow Meter

Rev.:

1-2 3 4-6 7 8 9

Model TypeUV – Versatec Variable

Speed

Cabinet Configuration V – Vertical H – Horizontal

Unit Capacity (MBTUH)036, 048, 060, 072

Discharge ConfigurationT – Top (Vertical)E – End (Horizontal)S – Side (Horizontal)

Return Air ConfigurationL – LeftR – Right

Voltage0 – 208-230/60/13 – 208-230/60/34 – 460/60/3

Refrigeration Option 0 – None 2 – HWG Only w/o Pump 6 – Hot Gas Bypass

Blower Options 1 – Variable Speed ECM Blower

Water Coil Option C – Copper, Uninsulated D – Copper, Insulated N – CuproNickel, Uninsulated P – CuproNickel, Insulated

Sound Kit Option A – None B – Sound Kit

10 11 12 14UV V 036 T L 0 0 1 C A N

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Contractor: P.O.: Engineer:


SD2750AU 09/18 3


AHRI DataVS ECM MotorsAHRI/ASHRAE/ISO 13256-1English (IP) Units

Flow Rate

Water Loop Heat Pump Ground Water Heat Pump Ground Loop Heat Pump

ModelCapacity

ModulationCooling

EWT 86°FHeating

EWT 68°FCooling

EWT 59°FHeating

EWT 50°F

Cooling Brine Full Load 77°F Part Load 68°F

Heating Brine Full Load 32°F Part Load 41°F

gpm cfm Capacity

Btuh EER

Btuh/W Capacity

Btuh COP

Capacity Btuh

EER Btuh/W

Capacity Btuh

COP Capacity

Btuh EER

Btuh/W Capacity

Btuh COP

036Full 9 1300 37,500 17.8 46,000 5.4 43,000 28.0 37,000 4.4 39,000 21.0 29,000 3.8

Part 7 700 9,500 21.0 11,000 7.0 11,000 48.0 8,000 5.5 10,500 36.0 7,000 4.4

048Full 12 1600 47,500 16.6 60,000 5.4 53,000 26.0 46,000 4.7 48,000 20.0 38,000 3.8

Part 8 850 13,000 25.0 15,000 7.8 15,000 50.0 12,000 5.5 14,000 41.0 10,000 4.9

060Full 17 1800 60,000 15.4 73,000 4.8 63,000 24.0 57,000 4.2 62,000 17.8 45,000 3.7

Part 10 1200 16,000 21.0 17,000 7.8 18,000 45.0 14,000 5.3 18,000 36.0 11,000 4.4

072Full 20 2000 70,000 14.0 90,000 4.6 78,000 21.0 72,000 4.0 71,500 16.4 58,000 3.4

Part 12 1400 19,500 20.4 23,000 7.4 24,000 40.0 18,000 5.4 22,000 34.0 15,000 4.8

8/25/16Cooling capacities based upon 80.6°F DB, 66.2°F WB entering air temperatureHeating capacities based upon 68°F DB, 59°F WB entering air temperatureAll ratings based upon 208V operation

All UV Series product is safety listed under UL1995 thru ETL and performance listed with AHRI in accordance with standard 13256-1.




SD2750AU 09/18 4


Vertical Dimensional Data

1

28

ACCESSPANEL

AIR COIL

AIR

CO

IL S

IDE

AIR C

OIL SID

E

AIR COIL

5

POWER SUPPLY1" (25.4 mm) KNOCKOUT

LOW VOLTAGE1/2" (12.7 mm)

KNOCKOUT

CONDENSATE 3/4"PVC GLUE SOCKET

P

Q

B

RN

A

FRONT FRONT

C

D

EH

1.62

W

1.62

D

EH

C

1.62

1.62

L LK

J

Q

P B

S N

M M

A

AIR COIL

5

CONDENSATE 3/4"PVC GLUE SOCKET

1

2

6

8

7

8

78

6

STANDARD FILTER BRACKETS FOROPEN RETURN APPLICATIONS

DELUXE FILTER BRACKET ACCESSORYFOR DUCTABLE RETURN APPLICATIONS

KLL

J

2' (61 cm)Service Access Left Return

(Right Return opposite side)

2' (61 cm)Service Access

Field InstalledDuct Flange

ACCESSPANEL

ACCESSPANEL

ACCESSPANEL

TU

V

ACCESSPANEL

ACCESSPANEL

ACCESSPANEL




SD2750AU 09/18 5


Vertical Dimensional Data cont.

LL

1.8 in.[4.6 cm]

AlternativePowerLocation

Disconnect Located on thisSide for a Right Return

DisconnectLocation

PowerSupply

Vertical Shown inLeft Return Configuration

Vertical Models LL

036 15.3 [38.9]

048 14.3 [36.3]

060 14.3 [36.3]

072 14.3 [36.3]

Dimensions in inches [cm] 08/25/16

Vertical DisconnectWhen using disconnect, do not use dimension L from the standard vertical dimensional data. Use dimension LL from the vertical disconnect dimensional data.

6 7 8

1 2 3 4 5 J K Lusing delux e filter rack (±0.10 in)

A B C D E F G H Loop Knockout 1/2" cond 1/2" cond 1" cond M N P Q R S T U V W

Width Depth Height* In OutHWG

InHWG Out

Cond- ensate

Water FPT HWG Prov isions

Low Voltage

Low Voltage

Power Supply

Filter Rack

Supply Width

Supply Depth

Return Depth

Return Height

038in. 25.5 31.2 44.2 2.6 7.6 1.4 4.4 10.8 1" 0.875 10.1 6.1 8.1 2.2 18.0 18.0 6.6 4.6 6.3 1.6 28.1 26.1 2.0

cm. 64.8 79.2 112.3 6.6 19.3 3.6 11.2 27.4 25.4 mm 22.2 mm 25.7 15.5 20.6 5.6 45.7 45.7 16.8 11.7 16.0 4.1 71.4 66.3 5.1

049in. 25.5 31.2 48.2 2.6 7.6 1.4 4.4 10.8 1" 0.875 10.1 6.1 8.1 2.2 18.0 18.0 6.6 4.6 6.3 1.6 28.1 30.0 2.0

cm. 64.8 79.2 122.4 6.6 19.3 3.6 11.2 27.4 25.4 mm 22.2 mm 25.7 15.5 20.6 5.6 45.7 45.7 16.8 11.7 16.0 4.1 71.4 76.2 5.1

064-072in. 25.5 31.2 52.2 2.6 7.6 1.4 4.4 10.8 1" 0.875 10.1 6.1 8.1 2.2 18.0 18.0 6.6 5.0 6.4 1.6 28.1 34.0 2.0

cm. 64.8 79.2 132.6 6.6 19.3 3.6 11.2 27.4 25.4 mm 22.2 mm 25.7 15.5 20.6 5.6 45.7 45.7 16.8 12.7 16.3 4.1 71.4 86.4 5.1

Vertical

Models

Overall CabinetWater Connections

Electrical KnockoutsDischarge Connection **Return Connection

duct flange installed (±0.10 in)

036

048

060-072




SD2750AU 09/18 6


Horizontal Dimensional Data

BB

C C

L

M

NP

L

M

PN

V W

U

A

L

M

PN

C

L

MC

A

P N

D

EJ

1.7 1.7

H

2.12.1

H

LR DIVIDER LINE

RR DIVIDERLINE

COMPRESSOR SECTION

AIR HANDLERSECTION

UNIT HANGER DETAIL

RIGHT RETURN END DISCHARGE LEFT RETURN

END DISCHARGE

END DISCHARGE END DISCHARGE

SIDE DISCHARGE SIDE DISCHARGE

RIGHT RETURN LEFT RETURN

FRONTFRONT

CMP CMP

AP AP

CONDENSATE"X" PVC SIZE CONDENSATE

"X" PVC SIZE

RR FRONT VIEW

BLOWEROUTLET

BLOWEROUTLET

RIGHT RETURN SIDE DISCHARGE LEFT RETURN SIDE DISCHARGE

RIGHT RETURN SIDE VIEW LEFT RETURN SIDE VIEW

FILTER RACK CONNECTIONFILTER RACK CONNECTION

CP CPFRONTFRONT

AIR COIL AIR COIL

LR FRONT VIEW

D

EK

J

K

1.7 1.7

J

K J

K

CP

CP

1.5 1.5

BLOWEROUTLET

BLOWEROUTLET

FRONT FRONT

CMP

AP

CMP

AP

AP

AP

AIR

CO

IL S

IDE

AIR C

OIL SID

E

1/2" KNOCKOUT

1/2" KNOCKOUT

1" KNOCKOUT

1" KNOCKOUT

1" KNOCKOUT

1" KNOCKOUT

1/2" KNOCKOUT

1/2" KNOCKOUT

SQ S Q

T T

R

BP

BP

FILT

ER R

ACKFILTER

RAC

K

2.3

STANDARD FILTER CHANNEL

STANDARD FILTER CHANNEL

RR FILTER PLACEMENT

LR FILTER PLACEMENT

DELUXE FILTER RACK OPTION SHOWN DELUXE FILTER RACK OPTION SHOWN

A

2.3

DELUXE FILTERRACK OPTION

(SHOWN)

R

L

MC

A

P N

2.1

H

LEFT RETURN END DISCHARGE

BLOWEROUTLET

AIR C

OIL SID

E

FILTER R

ACK

2.3

DELUXE FILTER RACK OPTION SHOWN

A

L

M

PN

C

H

2.1

RIGHT RETURN END DISCHARGE

BLOWEROUTLET

AIR

CO

IL S

IDE

FILT

ER R

ACK

DELUXE FILTER RACK OPTION SHOWN

2.3




SD2750AU 09/18 7


Horizontal Dimensional Data cont.

2.1 in.[5.3 cm]

KK

Disconnect Locatedon this Side for a

Left Return

DisconnectLocation

Power Supply

Horizontal Shown inRight Return Configuration

Horizontal Models KK

036 10.2 [25.9]

048-72 11.2 [28.4]

Dimensions in inches [cm] 08/25/16

Horizontal DisconnectWhen using disconnect, do not use dimension K from the standard horizontal dimensional data. Use dimension KK from the horizontal disconnect dimensional data.

Overall CabinetWater Connections

1 2 3 J K

HorizontalModels

A B C D E H Loop 1/2" cond 1" cond L M N P Q R S T

Width Depth Height* In OutCond- ensate Water FPT

Low Voltage

Power Supply

Supply

WidthSupply Depth

Return Depth

Return Height

038in. 25.5 57.0 21.2 1.8 6.8 0.8 1" 9.2 9.1 4.9 13.6 13.2 4.6 40.4 18.6 2.3 1.4

cm. 64.8 144.8 53.8 4.6 17.3 2.0 25.4 mm 23.4 23.1 12.4 34.5 33.5 11.7 102.6 47.2 5.8 3.6

049in. 25.5 63.0 21.2 1.8 6.8 0.8 1" 9.2 9.1 4.9 13.6 13.2 4.6 45.4 18.6 2.3 1.4

cm. 64.8 160.0 53.8 4.6 17.3 2.0 25.4 mm 23.4 23.1 12.4 34.5 33.5 11.7 115.3 47.2 5.8 3.6

064in. 25.5 70.0 21.2 1.8 6.8 0.8 1" 9.2 9.1 4.9 13.6 13.2 4.6 45.4 18.6 2.3 1.4

cm. 64.8 177.8 53.8 4.6 17.3 2.0 25.4 mm 23.4 23.1 12.4 34.5 33.5 11.7 115.3 47.2 5.8 3.6

072in. 25.5 75.0 21.2 1.8 6.8 0.8 1" 9.2 9.1 4.9 13.6 13.2 4.6 45.4 18.6 2.3 1.4

cm. 64.8 190.5 53.8 4.6 17.3 2.0 25.4 mm 23.4 23.1 12.4 34.5 33.5 11.7 115.3 47.2 5.8 3.6

Electrical Knockouts Discharge Connectionduct flange installed (±0.10 in)

Return Connectionusing delux e filter rack option (±0.10 in)

036

048

060

072

X

3/4"

1.9

3/4"

1.9

3/4"

1.9

3/4"

1.9

PVC Size




SD2750AU 09/18 8


Hanger Bracket Locations

Hanger Dimensions

ModelHanger Kit

Part NumberUnit Hanger Dimensions

A B C H

036in.

99S500A0453.8 28.1 24.4 n/a

cm 136.7 71.4 62.0 n/a

048in.

99S500A0461.8 28.1 24.4 n/a

cm 157.0 71.4 62.0 n/a

060in.

99S500A0368.8 28.1 24.4 36.0

cm 174.8 71.4 62.0 91.4

072in.

99S500A0368.8 28.1 24.4 42.0

cm 174.8 71.4 62.0 106.7

8/25/16

Weight Distribution

ModelVertical

Shipping Weight

HorizontalShippingWeight

Horizontal Weight Distribution

Front Back

D E F G

036lb. 400 415 155 105 80 65

kg [181] [188] [70] [48] [36] [30]

048lb. 410 420 165 110 85 70

kg [186] [191] [75] [50] [39] [32]

060lb. 450 460 140 120 100 85

kg [204] [209] [64] [54] [45] [39]

072lb. 485 495 155 130 105 90

kg [220] [225] [70] [59] [48] [41]

8/25/16

BC

A

H

E

D

G

F

Left

D

E

F

G

Right

Vibration Isolator

Washer

Hex Nuts(not supplied)

Bolt andLockwasher

3/8”Threaded Rod(not supplied)

CompressorSection

CompressorSection

Air HandlerSection

Air HandlerSection

H




SD2750AU 09/18 9


Physical Data

Model 036 048 060 072Compressor (1 each) Variable Speed Scroll

Factory Charge R410A, oz [kg] Vertical 82 [2.32] 96 [2.72] 98 [2.78] 132 [3.74]

Factory Charge R410A, oz [kg] Horizontal 82 [2.32] 96 [2.72] 126 [3.57] 132 [3.74]

ECM Blower Motor & BlowerBlower Motor Type/Speeds VS ECM Variable Speed

Blower Motor- hp [W] VS ECM 1/2 [373] 1 [746] 1 [746] 1 [746]

Blower Wheel Size (Dia x W), in. [mm] VS ECM 11 x 10 [279 x 254]

11 x 10 [279 x 254]

11 x 10 [279 x 254]

11 x 10 [279 x 254]

Coax and Water PipingWater Connections Size - FPT - in [mm] 1" [25.4] 1" [25.4] 1" [25.4] 1" [25.4]

HWG Connection Size - Female Sweat I.D. - in [mm] (Vertical Only) 1/2" [12.7] 1/2" [12.7] 1/2" [12.7] 1/2" [12.7]

Coax & Piping Water Volume - gal [l] 1.3 [4.9] 1.6 [6.1] 1.6 [6.1] 2.3 [8.7]

VerticalAir Coil Dimensions (H x W), in. [mm] 28 x 25

[711 x 635]32 x 25

[813 x 635]36 x 25

[914 x 635]36 x 25

[914 x 635]

Air Coil Total Face Area, ft2 [m2] 4.9 [0.451] 5.6 [0.520] 6.3 [0.585] 6.3 [0.585]

Air Coil Tube Size, in [mm] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5]

Air Coil Number of rows 3 3 4 4

Filter Standard - 1" [25mm] Pleated MERV 4 Throwaway, in [mm] 28 x 30 [711 x 762]

32 x 30 [813 x 762]

36 x 30 [914 x 762]

30 x 36 [762 x 914]

Filter Standard - 2" [51mm] Pleated MERV 13 Throwaway, in [mm] 28 x 30 [711 x 762]

32 x 30 [813 x 762]

30 x 36 [762 x 914]

30 x 36 [762 x 914]

HorizontalAir Coil Dimensions (H x W), in. [mm] 20 x 35

[508 x 889]20 x 40

[508 x 1016]20 x 45

[508 x 1143]20 x 45

[508 x 1143]

Air Coil Total Face Area, ft2 [m2] 4.9 [0.451] 5.6 [0.520] 6.3 [0.585] 6.3 [0.585]

Air Coil Tube Size, in [mm] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5]

Air Coil Number of rows 3 3 4 4

Filter Standard - 1" [25mm] Pleated MERV 4 Throwaway, in [mm] 2 - 18 x 20 [457 x 508]

1 - 20 x 22 [508 x 559] 1 - 20 x 20 [508 x 508]

1 - 20 x 25 [508 x 635] 1 - 20 x 22 [508 x 559]

1 - 20 x 25 [508 x 635] 1 - 20 x 22 [508 x 559]

Filter Standard - 2" [51mm] Pleated MERV 13 Throwaway, in [mm] 1 - 20 x 37 [508 x 940]

1 - 20 x 20 [508 x 508] 1 - 20 x 22 [508 x 559]

1 - 20 x 25 [508 x 635] 1 - 20 x 22 [508 x 559]

1 - 20 x 25 [508 x 635] 1 - 20 x 22 [508 x 559]

8/25/16




SD2750AU 09/18 10


Electrical Data

ModelRated

VoltageVoltageMin/Max

Compressor BlowerMotorFLA

TotalUnitFLA

MinCircAmp

MaxFuse/

HACR BreakerMCC RLA LRA*

036208-230/60/1 187/253 26.0 16.7 60.0 4.3 21.0 25.2 40

208-230/60/3 187/253 18.0 11.5 60.0 4.3 15.8 18.7 30

460/60/3 414/506 12.0 7.7 25.0 4.3 12.0 13.9 20

048208-230/60/1 187/253 26.0 16.7 60.0 7.7 24.4 28.6 60

208-230/60/3 187/253 18.0 11.5 60.0 6.7 18.2 21.1 30

460/60/3 414/506 12.0 7.7 25.0 6.0 13.7 15.6 20

060208-230/60/1 187/253 38.0 24.4 60.0 7.7 32.1 38.2 60

208-230/60/3 187/253 24.0 15.4 60.0 6.7 22.1 26.0 40

460/60/3 414/506 15.0 9.6 25.0 6.0 15.6 18.0 25

072208-230/60/1 187/253 38.0 24.4 60.0 7.7 32.1 38.2 60

208-230/60/3 187/253 24.0 15.4 60.0 6.7 22.1 26.0 40

460/60/3 414/506 15.0 9.6 25.0 6.0 15.6 18.0 25

8/25/16HACR circuit breaker in USA only* - Based on AC input current protection to compressor drive.

Blower Performance Data

VS ECM Blower Performance

*VS Compressor speed is given for the factory default cfm settings. When the cfm default settings are changed it will change the relationship to the compressor speed that is shown in the table.

Factory settings are at recommended L, H, and Aux positions “G” may be located anywhere within the airfl ow table“L” setting should be located < or = to “H” setting“H” setting MUST be located within the shaded cfm range“Aux” setting MUST be equal to or greater than “H” setting“Aux” setting MUST be equal to or greater than the minimum allowable cfm for the auxilliary heater kit (see auxiliary heat ratings)CFM is controlled within 5% up to the maximum ESPMax ESP includes allowance for wet coil and 1” MERV 4

Model Max ESPAir Flow Speed Settings

1 2 3 4 5 6 7 8 9 10 11 12

036 0.50

285 380 525 675 815 980 1100 1220 1330 1440 1540 1575

G L H Aux

*1-2 *3-4 *5-6 *7-8 *9-10 *11-12

048 0.75

475 620 730 850 1020 1140 1270 1400 1520 1650 1790 1925

G L H Aux

*1-2 *3-4 *5-6 *7-8 *9-10 *11-12

060 0.75

400 600 830 1050 1230 1400 1560 1700 1870 2010 2140 2265

G L H Aux

*1-2 *3-4 *5-6 *7-8 *9-10 *11-12

072 0.75

400 600 830 1050 1230 1400 1560 1700 1870 2010 2140 2265

G L H-Aux

*1-2 *3-4 *5-6 *7-8 *9-10 *11-12

1/25/17

Versatec Variable Speed Series




SD2750AU 09/18 11


Blower Performance Data cont.

ECM Speed Info

1▶ 2 ◀ G 3 4 5 6 7 8 9 10 11 12

Option ◀▶ Enter ◙

ECM Speed Info

1 2 G▶ 3 ◀ Lo 4 5 6 7 8 9 10 11 12


ECM Speed Info

1 2 G 3 Lo 4 5▶ 6 ◀ Hi 7 8 9 10 11 12


ECM Speed Info

1 2 G 3 Lo 4 5 6 Hi 7 8 9▶10 ◀ Aux 11 12


ECM Speed Info

Blower Only Speed 3Lo Compressor 6Hi Compressor 9Aux Heat 10

Want To Change?

YesOption ◀▶

NoEnter ◙

Cooling Airfl ow Setup

--- ECM Only ---The airfl ow will be

adjusted by the chosenamount in cooling mode.

Adjustment:-15%

Want To Change?

YesOption ◀▶

NoEnter ◙

Cooling Airfl ow Setup

--- ECM Only ---The airfl ow will be

adjusted by the chosenamount in cooling mode.

Adjustment:-15%

Change ▼▲ Enter ◙

Setting Blower Speed - Variable Speed ECM The ABC board’s Yellow Confi g LED will fl ash the current ECM blower speed selections for G, low, and high continuously with a short pause in between. The speeds can also be confi rmed with the AID Tool under the Setup/ECM Setup screen. The Aux will not be fl ashed but can be viewed in the AID Tool. The ECM blower motor speeds can be fi eld adjusted with or without using an AID Tool.

Variable speed ECM Setup without an AID ToolThe blower speeds for G only, Low (Y1), and High (Y2/Aux) can be adjusted directly at the Aurora ABC board which utilizes the push button (SW1) on the ABC board. This procedure is outlined in the ECM Confi guration Mode portion of the Aurora ‘Base’ Control System section. The Aux cannot be set manually without an AID Tool.

Variable speed ECM Setup with an AID ToolA much easier method utilizes the AID Tool to change the airfl ow using the procedure below. First navigate to the Setup screen and then select ECM Setup. This screen displays the current ECM settings. It allows the technician to enter the setup screens to change the ECM settings.

Change the highlighted item using the ◄ and ► buttons and then press the ◙ button to select the item.

Selecting YES will enter ECM speed setup, while selecting NO will return to the previous screen.

ECM Speed Setup - These screens allow the technician to select the G, low, high, and auxiliary heat blower speed for the ECM blower motor. Change the highlighted item using the ▲ and ▼ buttons. Press the ◙ button to select the speed.

After the auxiliary heat speed setting is selected the AID Tool will automatically transfer back to the ECM Setup screen.

Cooling Airfl ow Setup - These screens allow the technician to select -15%, -10%, -5%, None or +5% change from the heating airfl ow. Change the adjustment percentage using the ▲ and ▼ buttons. Press the ◙ button to save the change.




SD2750AU 09/18 12


Defi nitions

ABBREVIATIONS AND DEFINITIONS:

cfm = airflow, cubic feet/minuteEWT = entering water temperature, Fahrenheitgpm = water flow in gallons/minuteWPD = water pressure drop, psi and feet of waterEAT = entering air temperature, Fahrenheit (dry bulb/wet bulb)HC = air heating capacity, MBtu/hTC = total cooling capacity, MBtu/hSC = sensible cooling capacity, MBtu/hkW = total power unit input, kilowattsHR = total heat of rejection, MBtu/h

HE = total heat of extraction, MBtu/hHWC = hot water generator capacity, MBtu/hEER = Energy Efficient Ratio = BTU output/Watt inputCOP = Coefficient of Performance = Btu output/Btu inputLWT = leaving water temperature, °FLAT = leaving air temperature, °FTH = total heating capacity, MBtu/hLC = latent cooling capacity, MBtu/hS/T = sensible to total cooling ratio

Operating Limits

Operating LimitsCooling Heating

(°F) (°C) (°F) (°C)

Air Limits

Min. Ambient Air 45 7.2 45 7.2

Rated Ambient Air 80 26.7 70 21.1

Max. Ambient Air 100 37.8 85 29.4

Min. Entering Air 50 10.0 40 4.4

Rated Entering Air db/wb 80.6/66.2 27/19 68 20.0

Max. Entering Air db/wb 110/83 43/28.3 80 26.7

Water Limits

Min. Entering Water 30 -1.1 20 -6.7

Normal Entering Water 50-110 10-43.3 30-70 -1.1

Max. Entering Water 120 48.9 90 32.2

NOTE: Minimum/maximum limits are only for start-up conditions, and are meant for bringing the space up to occupancy temperature. Units are not designed to operate at the minimum/maximum conditions on a regular basis. The operating limits are dependant upon three primary factors: 1) water temperature, 2) return air temperature, and 3) ambient temperature. When any of the factors are at the minimum or maximum levels, the other two factors must be at the normal level for proper and reliable unit operation.




SD2750AU 09/18 13


Correction Factor Tables

Cooling Capacity Corrections

EnteringAir WB ºF

TotalClg Cap

Sensible Cooling Capacity Multipliers - Entering DB ºF PowerInput

Heat ofRejection60 65 70 75 80 80.6 85 90 95 100

55 0.898 0.723 0.866 1.048 1.185 * * * * * * 0.985 0.913

60 0.912 0.632 0.880 1.078 1.244 1.260 * * * * 0.994 0.927

65 0.967 0.694 0.881 1.079 1.085 1.270 * * * 0.997 0.972

66.2 0.983 0.655 0.842 1.040 1.060 1.232 * * * 0.999 0.986

67 1.000 0.616 0.806 1.000 1.023 1.193 1.330 * * 1.000 1.000

70 1.053 0.693 0.879 0.900 1.075 1.250 1.404 * 1.003 1.044

75 1.168 0.687 0.715 0.875 1.040 1.261 1.476 1.007 1.141

11/10/09NOTE: * Sensible capacity equals total capacity at conditions shown.

Airfl ow CorrectionsAirfl ow Cooling Heating

cfm Per Ton of Clg

% of Nominal Total Cap Sens Cap Power Heat of Rej Htg Cap Power Heat of Ext

240 60 0.922 0.786 0.910 0.920 0.943 1.150 0.893

275 69 0.944 0.827 0.924 0.940 0.958 1.105 0.922

300 75 0.959 0.860 0.937 0.955 0.968 1.078 0.942

325 81 0.971 0.894 0.950 0.967 0.977 1.053 0.959

350 88 0.982 0.929 0.964 0.978 0.985 1.031 0.973

375 94 0.992 0.965 0.982 0.990 0.993 1.014 0.988

400 100 1.000 1.000 1.000 1.000 1.000 1.000 1.000

425 106 1.007 1.034 1.020 1.010 1.007 0.990 1.011

450 113 1.012 1.065 1.042 1.018 1.013 0.983 1.020

475 119 1.017 1.093 1.066 1.026 1.018 0.980 1.028

500 125 1.019 1.117 1.092 1.033 1.023 0.978 1.034

520 130 1.020 1.132 1.113 1.038 1.026 0.975 1.038

11/10/09

Heating CorrectionsEnt Air DB °F Htg Cap Power Heat of Ext

45 1.062 0.739 1.158

50 1.050 0.790 1.130

55 1.037 0.842 1.096

60 1.025 0.893 1.064

65 1.012 0.945 1.030

68 1.005 0.976 1.012

70 1.000 1.000 1.000

75 0.987 1.048 0.970

80 0.975 1.099 0.930

11/10/09

Operating LimitsCooling Heating

(°F) (°C) (°F) (°C)

Air Limits

Min. Ambient Air 45 7.2 45 7.2

Rated Ambient Air 80 26.7 70 21.1

Max. Ambient Air 100 37.8 85 29.4

Min. Entering Air 50 10.0 40 4.4

Rated Entering Air db/wb 80.6/66.2 27/19 68 20.0

Max. Entering Air db/wb 110/83 43/28.3 80 26.7

Water Limits

Min. Entering Water 30 -1.1 20 -6.7

Normal Entering Water 50-110 10-43.3 30-70 -1.1

Max. Entering Water 120 48.9 90 32.2

NOTE: Minimum/maximum limits are only for start-up conditions, and are meant for bringing the space up to occupancy temperature. Units are not designed to operate at the minimum/maximum conditions on a regular basis. The operating limits are dependent upon three primary factors: 1) water temperature, 2) return air temperature, and 3) ambient temperature. When any of the factors are at the minimum or maximum levels, the other two factors must be at the normal level for proper and reliable unit operation.




SD2750AU 09/18 14


Antifreeze Corrections

Antifreeze TypeAntifreeze% by wt

Cooling Capacity

Heating Capacity

Pressure Drop

EWT - degF [DegC] 90 [32.2] 30 [-1.1] 30 [-1.1]

Water 0 1.000 1.000 1.000

10 0.991 0.973 1.075

20 0.979 0.943 1.163

Ethylene Glycol 30 0.965 0.917 1.225

40 0.955 0.890 1.324

50 0.943 0.865 1.419

10 0.981 0.958 1.130

20 0.969 0.913 1.270

Propylene Glycol 30 0.950 0.854 1.433

40 0.937 0.813 1.614

50 0.922 0.770 1.816

10 0.991 0.927 1.242

20 0.972 0.887 1.343

Ethanol 30 0.947 0.856 1.383

40 0.930 0.815 1.523

50 0.911 0.779 1.639

10 0.986 0.957 1.127

20 0.970 0.924 1.197

Methanol 30 0.951 0.895 1.235

40 0.936 0.863 1.323

50 0.920 0.833 1.399

Warning: Gray area represents antifreeze concentrations greater than 35% by weight and should be avoided due to the extreme performance penalty they represent.

Catalog performance can be corrected for antifreeze use. Please use the following table and note the example given.

Antifreeze Correction ExampleAntifreeze solution is Propylene Glycol 20% by weight. Determine the corrected heating and cooling performance at 30°F and 90°F respectively as well as pressure drop at 30°F for a Versatec Ultra Series US*024-PSC.

The corrected cooling capacity at 90°F would be: 24,500 Btu/h x 0.969 = 23,740 Btu/h

The corrected heating capacity at 30°F would be: 19,000 Btu/h x 0.913 = 17,347 Btu/h

The corrected pressure drop at 30°F and 6 gpm would be: 10.5 ft. hd x 1.270 = 13.34 ft. hd.




SD2750AU 09/18 15


Pressure Drop

Model gpmPressure Drop (psi)

30°F 50°F 70°F 90°F 110°F

036

5.0 1.5 1.2 0.9 0.5 0.2

7.0 2.2 1.9 1.6 1.2 0.9

9.0 3.0 2.7 2.3 2.0 1.7

11.0 4.9 4.6 4.3 4.0 3.7

048

6.0 1.6 1.3 1.0 0.6 0.3

9.0 2.4 2.1 1.7 1.4 1.1

12.0 3.4 3.1 2.7 2.4 2.1

15.0 5.7 5.3 5.0 4.7 4.3

060

8.0 1.8 1.6 1.3 1.1 0.8

12.0 3.8 3.3 2.9 2.4 1.9

16.0 6.5 6.0 5.6 5.1 4.6

20.0 9.7 9.1 8.5 8.0 7.4

072

12.0 3.2 3.0 2.8 2.6 2.4

15.0 4.5 4.1 3.8 3.4 3.0

18.0 6.0 5.6 5.3 4.9 4.5

21.0 7.8 7.4 7.1 6.7 6.3

8/25/16

Valve gpm CvPressure

Drop (psi)

1"

6.0 16.1 0.14

9.0 16.8 0.29

12.0 17.4 0.47

15.0 18.1 0.69

1"

6.0 16.1 0.14

9.0 16.8 0.29

12.0 17.4 0.47

15.0 18.1 0.69

1"

9.0 16.8 0.29

12.0 17.4 0.47

16.0 18.3 0.76

20.0 19.2 1.09

1"

12.0 17.4 0.47

15.0 18.1 0.69

18.0 18.7 0.92

24.0 20.1 1.43

8/25/16




SD2750AU 09/18 16


036 - Min Load - Performance Data

EWT °F

Flow gpm

WPD HEATING - EAT 70°F COOLING - EAT 80/67°F

psi FT HC MBtu/h

Power kW

HE MBtu/h

LAT °F COP HWC

MBtu/hTC

MBtu/hSC

MBtu/hS/T

RatioPower

kWHR

MBtu/h EER HWC MBtu/h

20

3.0 0.51 1.17Operation not recommended

Operation not recommended5.0 1.69 3.90

7.0 2.40 5.54 5.0 0.48 3.4 76.6 3.05 0.9

30

3.0 0.34 0.79 Operation not recommended Operation not recommended

5.0 1.52 3.51 5.9 0.51 4.1 77.7 3.39 0.9 11.6 10.1 0.87 0.22 12.4 53.6 ---

7.0 2.23 5.16 5.9 0.51 4.2 77.9 3.40 1.0 11.8 10.2 0.87 0.21 12.5 57.1 ---

40


5.0 1.35 3.13 7.2 0.52 5.4 79.5 4.05 1.0 11.4 10.0 0.87 0.25 12.3 45.0 ---

7.0 2.07 4.77 7.3 0.53 5.5 79.7 4.07 1.1 11.5 10.1 0.87 0.24 12.4 47.9 ---

50

3.0 0.27 0.62 8.4 0.53 6.6 81.2 4.68 1.1 11.1 9.7 0.87 0.32 12.2 35.3 0.7

5.0 1.19 2.74 8.6 0.54 6.7 81.3 4.69 1.2 11.2 9.9 0.88 0.29 12.2 38.5 0.6

7.0 1.90 4.39 8.7 0.54 6.8 81.5 4.70 1.2 11.3 10.0 0.88 0.28 12.3 41.1 0.6

60

3.0 0.25 0.58 9.7 0.55 7.8 82.9 5.17 1.3 11.3 10.0 0.89 0.36 12.5 31.0 0.8

5.0 1.02 2.35 9.9 0.56 8.0 83.0 5.18 1.3 11.4 10.1 0.89 0.35 12.6 32.9 0.8

7.0 1.73 4.00 10.0 0.57 8.1 83.2 5.20 1.4 11.6 10.3 0.89 0.34 12.7 34.6 0.7

70

3.0 0.21 0.49 11.0 0.57 9.0 84.6 5.62 1.4 10.7 9.6 0.90 0.44 12.2 24.3 1.0

5.0 0.85 1.97 11.2 0.58 9.2 84.8 5.64 1.5 10.8 9.7 0.90 0.42 12.2 25.9 1.0

7.0 1.57 3.62 11.3 0.59 9.3 85.0 5.65 1.5 11.0 9.9 0.90 0.41 12.4 27.3 0.9

80

3.0 0.19 0.44 11.6 0.63 9.5 85.4 5.43 1.6 9.7 8.9 0.91 0.53 11.5 18.3 1.3

5.0 0.69 1.58 11.8 0.64 9.6 85.6 5.44 1.7 9.9 9.0 0.91 0.51 11.6 19.5 1.2

7.0 1.40 3.23 12.0 0.64 9.8 85.9 5.46 1.7 10.1 9.2 0.91 0.49 11.8 20.5 1.1

90

3.0 0.17 0.39 12.3 0.68 9.9 86.2 5.27 1.8 9.1 8.5 0.93 0.57 11.0 16.1 1.6

5.0 0.52 1.20 12.5 0.69 10.1 86.5 5.28 1.9 9.3 8.6 0.93 0.54 11.1 17.2 1.5

7.0 1.23 2.85 12.7 0.70 10.3 86.7 5.30 1.9 9.4 8.8 0.93 0.52 11.2 18.1 1.4

100

3.0 0.14 0.32

Operation not recommended


5.0 0.35 0.81 8.6 8.0 0.93 0.59 10.6 14.5 1.8

7.0 1.06 2.46 8.7 8.2 0.94 0.57 10.7 15.3 1.7

110

3.0 0.12 0.28 Operation not recommended

5.0 0.18 0.43 7.9 7.4 0.94 0.64 10.1 12.3 2.1

7.0 0.90 2.07 8.0 7.6 0.94 0.62 10.1 12.9 2.1

120


5.0 0.02 0.04 7.7 7.2 0.94 0.71 10.1 10.9 2.6

7.0 0.73 1.69 7.8 7.4 0.95 0.69 10.1 11.4 2.5

8/24/2016

700 CFM




SD2750AU 09/18 17


036 - Full Load - Performance Data

EWT °F

Flow gpm


psi FT HC MBtu/h

Power kW

HE MBtu/h

LAT °F COP HWC

MBtu/hTC

MBtu/hSC

MBtu/hS/T

RatioPower

kWHR


20



9.0 3.17 7.32 26.0 2.25 18.3 86.5 3.39 2.6

30


7.0 2.23 5.16 31.1 2.52 22.5 90.1 3.61 2.8 42.6 30.9 0.73 1.52 47.8 28.0 ---

9.0 3.00 6.93 31.6 2.55 22.9 90.5 3.62 2.9 43.0 31.2 0.73 1.44 47.9 29.9 ---

40


7.0 2.07 4.77 34.8 2.59 26.0 92.8 3.94 3.1 43.8 32.0 0.73 1.62 49.3 27.0 ---

9.0 2.83 6.54 35.4 2.62 26.4 93.2 3.95 3.2 44.2 32.4 0.73 1.54 49.5 28.7 ---

50

5.0 1.19 2.74 38.0 2.62 29.0 95.1 4.25 3.4 44.7 32.5 0.73 1.88 51.1 23.8 2.0

7.0 1.90 4.39 38.6 2.66 29.5 95.5 4.25 3.5 45.0 33.2 0.74 1.73 50.9 26.0 1.9

9.0 2.67 6.16 39.2 2.69 30.0 95.9 4.27 3.6 45.5 33.5 0.74 1.64 51.1 27.7 1.8

60

5.0 1.02 2.35 42.7 2.67 33.6 98.4 4.69 3.8 43.2 31.7 0.73 1.98 50.0 21.8 2.4

7.0 1.73 4.00 43.4 2.71 34.2 98.9 4.70 4.0 43.8 32.2 0.74 1.89 50.2 23.2 2.3

9.0 2.50 5.77 44.1 2.74 34.7 99.4 4.71 4.1 44.6 32.9 0.74 1.83 50.8 24.3 2.2

70

5.0 0.85 1.97 47.5 2.72 38.2 101.8 5.11 4.3 41.8 30.2 0.72 2.14 49.1 19.6 3.0

7.0 1.57 3.62 48.2 2.76 38.8 102.3 5.13 4.4 42.4 30.7 0.72 2.04 49.4 20.8 2.9

9.0 2.33 5.39 48.9 2.79 39.4 102.9 5.14 4.6 43.3 31.3 0.72 1.97 50.0 22.0 2.8

80

5.0 0.69 1.58 47.6 2.75 38.2 101.9 5.06 4.8 39.7 29.9 0.75 2.38 47.9 16.7 3.8

7.0 1.40 3.23 48.3 2.79 38.8 102.4 5.08 5.0 40.3 30.3 0.75 2.27 48.1 17.7 3.6

9.0 2.17 5.00 49.1 2.83 39.4 102.9 5.09 5.1 41.2 31.0 0.75 2.20 48.7 18.7 3.4

90

5.0 0.52 1.20 47.7 2.79 38.2 102.0 5.02 5.4 37.3 29.2 0.78 2.63 46.2 14.2 4.7

7.0 1.23 2.85 48.5 2.83 38.8 102.5 5.03 5.6 37.9 29.7 0.78 2.51 46.4 15.1 4.5

9.0 2.00 4.62 49.2 2.86 39.4 103.0 5.04 5.8 38.6 30.3 0.78 2.43 46.9 15.9 4.3

100

5.0 0.35 0.81



7.0 1.06 2.46 36.3 29.4 0.81 2.96 46.4 12.3 5.3

9.0 1.83 4.23 36.9 30.0 0.81 2.86 46.6 12.9 5.1

110


7.0 0.90 2.07 34.6 29.1 0.84 3.40 46.2 10.2 6.4

9.0 1.66 3.85 35.1 29.7 0.85 3.30 46.4 10.6 6.2

120


7.0 0.73 1.69 32.7 28.2 0.86 3.76 45.5 8.7 7.7

9.0 1.50 3.46 33.2 28.8 0.87 3.65 45.6 9.1 7.5

8/24/2016

1300 CFM




SD2750AU 09/18 18



EWT °F

Flow gpm


psi FT HC MBtu/h

Power kW

HE MBtu/h

LAT °F COP HWC

MBtu/hTC

MBtu/hSC

MBtu/hS/T

RatioPower

kWHR


20



8.0 2.34 5.41 7.93 0.77 5.31 78.6 3.03 1.6

30


6.0 1.63 3.77 8.26 0.72 5.81 79.0 3.37 1.7 15.05 11.19 0.74 0.34 16.2 43.9 ---

8.0 2.18 5.02 8.38 0.73 5.90 79.1 3.38 1.8 15.20 11.30 0.74 0.33 16.3 46.8 ---

40


6.0 1.46 3.38 10.35 0.70 7.95 81.3 4.33 1.9 14.79 11.10 0.75 0.36 16.0 40.9 ---

8.0 2.01 4.64 10.50 0.71 8.08 81.4 4.34 1.9 14.94 11.21 0.75 0.34 16.1 43.6 ---

50

4.0 0.51 1.18 12.25 0.67 9.94 83.3 5.32 2.1 14.43 10.79 0.75 0.41 15.8 35.0 1.1

6.0 1.30 3.00 12.44 0.68 10.10 83.5 5.33 2.1 14.53 11.01 0.76 0.38 15.8 38.2 1.0

8.0 1.84 4.25 12.63 0.69 10.26 83.8 5.35 2.2 14.68 11.12 0.76 0.36 15.9 40.7 1.0

60

4.0 0.47 1.09 13.47 0.66 11.23 84.7 6.00 2.3 13.77 10.43 0.76 0.42 15.2 32.5 1.3

6.0 1.13 2.61 13.68 0.67 11.41 84.9 6.01 2.4 13.96 10.59 0.76 0.40 15.3 34.5 1.2

8.0 1.68 3.87 13.89 0.68 11.59 85.1 6.03 2.5 14.20 10.81 0.76 0.39 15.5 36.3 1.2

70

4.0 0.45 1.04 15.34 0.65 13.14 86.7 6.96 2.6 13.42 10.22 0.76 0.53 15.2 25.5 1.6

6.0 0.96 2.23 15.58 0.65 13.35 87.0 6.97 2.7 13.63 10.38 0.76 0.50 15.3 27.1 1.5

8.0 1.51 3.49 15.82 0.66 13.56 87.2 6.99 2.8 13.91 10.59 0.76 0.49 15.6 28.6 1.5

80

4.0 0.43 0.99 16.81 0.62 14.70 88.3 7.99 2.9 13.06 9.96 0.76 0.62 15.2 21.0 2.1

6.0 0.80 1.84 17.07 0.62 14.94 88.6 8.01 3.0 13.26 10.11 0.76 0.59 15.3 22.3 2.0

8.0 1.34 3.10 17.33 0.63 15.17 88.9 8.03 3.1 13.53 10.32 0.76 0.58 15.5 23.5 1.9

90

4.0 0.41 0.95 18.27 0.59 16.27 89.9 9.14 3.3 12.67 9.79 0.77 0.73 15.2 17.3 2.6

6.0 0.63 1.46 18.55 0.59 16.52 90.2 9.16 3.4 12.87 9.95 0.77 0.70 15.3 18.4 2.5

8.0 1.18 2.72 18.83 0.60 16.78 90.5 9.18 3.5 13.13 10.15 0.77 0.68 15.4 19.4 2.3

100

4.0 0.38 0.88



6.0 0.46 1.07 11.52 9.32 0.81 0.86 14.4 13.4 3.1

8.0 1.01 2.33 11.69 9.52 0.81 0.83 14.5 14.1 2.9

110


6.0 0.30 0.69 10.10 8.70 0.86 1.01 13.6 10.0 3.7

8.0 0.84 1.95 10.25 8.88 0.87 0.99 13.6 10.4 3.6

120


6.0 0.13 0.30 8.88 8.16 0.92 1.23 13.1 7.2 4.5

8.0 0.68 1.56 9.02 8.33 0.92 1.20 13.1 7.5 4.3

8/24/2016

850 CFM




SD2750AU 09/18 19



EWT °F

Flow gpm


psi FT HC MBtu/h

Power kW

HE MBtu/h

LAT °F COP HWC

MBtu/hTC

MBtu/hSC

MBtu/hS/T

RatioPower

kWHR


20



12.0 3.57 8.24 35.0 2.99 24.8 88.3 3.43 4.8

30


9.0 2.40 5.54 37.8 3.10 27.2 89.9 3.57 5.2 58.7 41.0 0.70 1.56 64.0 37.6 ---

12.0 3.40 7.85 39.0 3.14 28.3 90.6 3.64 5.3 59.3 41.4 0.70 1.48 64.3 40.1 ---

40


9.0 2.23 5.16 44.4 3.30 33.2 93.7 3.95 5.7 57.3 40.1 0.70 1.87 63.7 30.6 ---

12.0 3.23 7.47 45.8 3.34 34.4 94.5 4.02 5.8 57.9 40.5 0.70 1.77 63.9 32.6 ---

50

6.0 1.30 3.00 48.9 3.44 37.1 96.3 4.16 6.2 55.5 38.4 0.69 2.37 63.6 23.5 3.2

9.0 2.07 4.77 51.1 3.49 39.1 97.6 4.28 6.4 55.9 39.2 0.70 2.18 63.4 25.6 3.0

12.0 3.07 7.08 52.6 3.54 40.6 98.5 4.36 6.5 56.5 39.6 0.70 2.07 63.6 27.3 2.9

60

6.0 1.13 2.61 53.2 3.52 41.2 98.8 4.43 7.0 53.2 37.6 0.71 2.66 62.3 20.0 3.9

9.0 1.90 4.39 55.7 3.58 43.5 100.2 4.56 7.2 53.9 38.2 0.71 2.54 62.6 21.2 3.7

12.0 2.90 6.70 57.4 3.62 45.0 101.2 4.65 7.4 54.9 39.0 0.71 2.46 63.3 22.3 3.5

70

6.0 0.96 2.23 60.5 3.73 47.7 103.0 4.75 7.9 49.7 37.1 0.75 2.92 59.7 17.0 4.9

9.0 1.73 4.00 63.2 3.79 50.3 104.6 4.89 8.1 50.5 37.7 0.75 2.79 60.0 18.1 4.6

12.0 2.73 6.31 65.2 3.83 52.1 105.7 4.98 8.3 51.5 38.5 0.75 2.70 60.7 19.1 4.4

80

6.0 0.80 1.84 65.7 3.76 52.9 106.0 5.12 8.8 47.0 35.6 0.76 3.30 58.3 14.2 6.2

9.0 1.57 3.62 68.7 3.82 55.7 107.8 5.28 9.1 47.7 36.1 0.76 3.15 58.5 15.1 5.9

12.0 2.57 5.93 70.8 3.86 57.6 109.0 5.37 9.4 48.7 36.9 0.76 3.05 59.1 16.0 5.6

90

6.0 0.63 1.46 71.0 3.79 58.1 109.1 5.49 9.9 45.2 34.7 0.77 3.65 57.6 12.4 7.7

9.0 1.40 3.24 74.2 3.84 61.1 110.9 5.65 10.2 45.9 35.2 0.77 3.48 57.8 13.2 7.4

12.0 2.40 5.55 76.5 3.89 63.2 112.3 5.76 10.6 46.8 35.9 0.77 3.37 58.3 13.9 7.0

100

6.0 0.46 1.07



9.0 1.23 2.85 43.5 33.7 0.78 3.85 56.6 11.3 9.2

12.0 2.23 5.16 44.1 34.4 0.78 3.73 56.9 11.8 8.7

110


9.0 1.07 2.47 40.8 32.2 0.79 4.20 55.2 9.7 11.2

12.0 2.07 4.78 41.4 32.9 0.79 4.09 55.4 10.1 10.7

120


9.0 0.90 2.08 35.9 30.7 0.86 4.61 51.7 7.8 13.5

12.0 1.90 4.39 36.5 31.4 0.86 4.47 51.7 8.2 12.9

8/24/2016

1600 CFM




SD2750AU 09/18 20



EWT °F

Flow gpm


psi FT HC MBtu/h

Power kW

HE MBtu/h

LAT °F COP HWC

MBtu/hTC

MBtu/hSC

MBtu/hS/T

RatioPower

kWHR


20



10.0 3.04 7.01 8.50 0.75 5.94 76.6 3.32 1.9

30


8.0 1.80 4.16 9.09 0.79 6.41 77.0 3.39 2.0 22.47 18.48 0.82 0.32 23.6 71.0 ---

10.0 2.80 6.47 9.23 0.80 6.51 77.1 3.40 2.0 22.70 18.67 0.82 0.30 23.7 75.7 ---

40


8.0 1.68 3.88 11.42 0.79 8.73 78.8 4.25 2.2 21.33 17.81 0.83 0.34 22.5 62.2 ---

10.0 2.56 5.92 11.60 0.80 8.88 78.9 4.26 2.2 21.55 17.99 0.83 0.33 22.7 66.3 ---

50

6.0 0.96 2.22 13.55 0.78 10.89 80.5 5.09 2.4 20.05 16.78 0.84 0.40 21.4 50.1 4.2

8.0 1.56 3.60 13.76 0.79 11.06 80.6 5.10 2.5 20.20 17.13 0.85 0.37 21.5 54.7 4.0

10.0 2.33 5.38 13.97 0.80 11.24 80.8 5.12 2.5 20.40 17.30 0.85 0.35 21.6 58.3 3.8

60

6.0 0.84 1.94 15.76 0.82 12.97 82.2 5.64 2.7 19.05 16.39 0.86 0.53 20.9 35.8 5.1

8.0 1.44 3.33 16.01 0.83 13.17 82.4 5.65 2.8 19.30 16.65 0.86 0.51 21.0 38.0 4.9

10.0 2.09 4.84 16.25 0.84 13.38 82.5 5.67 2.8 19.64 16.99 0.87 0.49 21.3 40.0 4.6

70

6.0 0.72 1.66 18.09 0.85 15.20 84.0 6.26 3.0 17.66 16.12 0.91 0.66 19.9 26.7 6.4

8.0 1.32 3.05 18.37 0.86 15.44 84.2 6.28 3.1 17.93 16.37 0.91 0.63 20.1 28.5 6.1

10.0 1.86 4.29 18.65 0.87 15.69 84.4 6.30 3.2 18.30 16.70 0.91 0.61 20.4 30.0 5.8

80

6.0 0.60 1.39 21.17 0.88 18.18 86.3 7.08 3.4 16.46 15.97 0.97 0.81 19.2 20.3 8.1

8.0 1.20 2.77 21.50 0.89 18.47 86.6 7.09 3.5 16.72 16.21 0.97 0.77 19.4 21.6 7.7

10.0 1.62 3.75 21.83 0.90 18.76 86.8 7.12 3.6 17.06 16.55 0.97 0.75 19.6 22.8 7.4

90

6.0 0.48 1.11 24.25 0.91 21.16 88.7 7.84 3.8 15.79 15.44 0.98 0.97 19.1 16.3 10.2

8.0 1.08 2.49 24.63 0.92 21.49 89.0 7.86 3.9 16.04 15.68 0.98 0.93 19.2 17.3 9.7

10.0 1.39 3.21 25.00 0.93 21.83 89.3 7.88 4.1 16.37 16.00 0.98 0.90 19.4 18.3 9.2

100

6.0 0.36 0.83



8.0 0.96 2.22 15.51 15.09 0.97 1.10 19.3 14.1 12.1

10.0 1.15 2.66 15.75 15.40 0.98 1.06 19.4 14.8 11.5

110


8.0 0.84 1.94 14.90 14.50 0.97 1.26 19.2 11.8 14.8

10.0 0.92 2.12 15.13 14.80 0.98 1.23 19.3 12.3 14.1

120


8.0 0.72 1.66 13.99 13.62 0.97 1.42 18.8 9.8 17.9

10.0 0.68 1.58 14.20 13.90 0.98 1.38 18.9 10.3 17.0

8/24/2016

1200 CFM




SD2750AU 09/18 21



EWT °F

Flow gpm


psi FT HC MBtu/h

Power kW

HE MBtu/h

LAT °F COP HWC

MBtu/hTC

MBtu/hSC

MBtu/hS/T

RatioPower

kWHR


20



16.0 6.74 15.56 43.0 3.77 30.1 90.1 3.34 5.6

30


12.0 3.80 8.78 47.6 4.12 33.5 92.5 3.38 6.0 75.2 50.3 0.67 1.73 81.2 43.4 ---

16.0 6.50 15.02 49.0 4.17 34.8 93.2 3.44 6.1 76.0 50.8 0.67 1.64 81.6 46.3 ---

40


12.0 3.56 8.23 54.4 4.34 39.6 96.0 3.67 6.6 72.9 49.1 0.67 2.12 80.1 34.4 ---

16.0 6.26 14.47 56.1 4.39 41.1 96.8 3.74 6.7 73.6 49.5 0.67 2.01 80.5 36.7 ---

50

8.0 1.56 3.60 58.6 4.49 43.3 98.1 3.82 7.2 70.0 46.9 0.67 2.71 79.3 25.8 4.2

12.0 3.33 7.69 61.2 4.56 45.7 99.5 3.94 7.4 70.5 47.8 0.68 2.50 79.0 28.2 4.0

16.0 6.03 13.93 63.1 4.61 47.4 100.5 4.01 7.5 71.2 48.3 0.68 2.37 79.3 30.1 3.8

60

8.0 1.44 3.33 64.3 4.69 48.3 101.1 4.02 8.0 65.8 44.4 0.68 2.95 75.8 22.3 5.1

12.0 3.09 7.15 67.2 4.76 51.0 102.6 4.14 8.3 66.6 45.1 0.68 2.81 76.2 23.7 4.9

16.0 5.79 13.38 69.3 4.82 52.9 103.6 4.21 8.5 67.8 46.0 0.68 2.72 77.1 24.9 4.6

70

8.0 1.32 3.05 70.2 4.89 53.6 104.1 4.21 9.0 61.2 43.2 0.71 3.39 72.8 18.0 6.4

12.0 2.86 6.60 73.4 4.96 56.5 105.8 4.33 9.3 62.1 43.9 0.71 3.23 73.2 19.2 6.1

16.0 5.56 12.84 75.7 5.03 58.5 106.9 4.41 9.6 63.4 44.8 0.71 3.13 74.1 20.3 5.8

80

8.0 1.20 2.77 73.6 5.12 56.2 105.9 4.22 10.2 57.5 41.7 0.73 3.95 70.9 14.5 8.1

12.0 2.62 6.06 77.0 5.19 59.2 107.6 4.34 10.5 58.3 42.4 0.73 3.77 71.2 15.5 7.7

16.0 5.32 12.30 79.3 5.26 61.4 108.8 4.42 10.8 59.5 43.2 0.73 3.65 72.0 16.3 7.4

90

8.0 1.08 2.49 77.0 5.34 58.8 107.6 4.22 11.4 54.6 40.3 0.74 4.28 69.2 12.8 10.2

12.0 2.39 5.52 80.5 5.43 62.0 109.4 4.35 11.8 55.5 40.9 0.74 4.08 69.4 13.6 9.7

16.0 5.09 11.75 83.0 5.49 64.3 110.7 4.43 12.2 56.6 41.7 0.74 3.95 70.1 14.3 9.2

100

8.0 0.96 2.22



12.0 2.15 4.97 53.5 40.2 0.75 4.37 68.4 12.3 12.1

16.0 4.85 11.21 54.3 41.0 0.75 4.22 68.8 12.9 11.5

110


12.0 1.92 4.43 51.3 39.5 0.77 4.63 67.1 11.1 14.8

16.0 4.62 10.67 52.1 40.3 0.77 4.50 67.5 11.6 14.1

120


12.0 1.68 3.89 47.5 38.7 0.81 5.15 65.1 9.2 17.9

16.0 4.38 10.12 48.2 39.5 0.82 5.00 65.3 9.6 17.0

8/24/2016

1800 CFM




SD2750AU 09/18 22



EWT °F

Flow gpm


psi FT HC MBtu/h

Power kW

HE MBtu/h

LAT °F COP HWC

MBtu/hTC

MBtu/hSC

MBtu/hS/T

RatioPower

kWHR


20



12.0 3.39 7.82 12.73 0.96 9.45 78.4 3.89 2.4

30


9.0 1.80 4.16 13.67 1.01 10.24 79.0 3.98 2.5 22.47 18.48 0.82 0.32 23.6 71.0 ---

12.0 3.20 7.39 13.88 1.02 10.40 79.2 3.99 2.6 22.70 18.67 0.82 0.30 23.7 75.7 ---

40


9.0 1.61 3.73 16.35 1.01 12.90 80.8 4.74 2.8 21.79 19.79 0.91 0.45 23.3 48.6 ---

12.0 3.01 6.96 16.60 1.02 13.10 81.0 4.75 2.9 22.02 19.99 0.91 0.43 23.5 51.8 ---

50

6.0 0.90 2.09 18.73 1.00 15.31 82.4 5.48 3.1 21.70 19.50 0.90 0.61 23.8 35.3 1.5

9.0 1.43 3.29 19.02 1.02 15.56 82.6 5.49 3.1 21.86 19.90 0.91 0.57 23.8 38.6 1.5

12.0 2.83 6.53 19.31 1.03 15.81 82.8 5.51 3.2 22.08 20.10 0.91 0.54 23.9 41.1 1.4

60

6.0 0.79 1.82 21.18 1.02 17.72 84.0 6.11 3.4 23.26 21.68 0.93 0.70 25.7 33.1 1.9

9.0 1.24 2.86 21.51 1.03 18.00 84.2 6.12 3.5 23.57 22.02 0.93 0.67 25.9 35.2 1.8

12.0 2.64 6.10 21.84 1.04 18.28 84.4 6.14 3.6 23.98 22.47 0.94 0.65 26.2 37.0 1.7

70

6.0 0.68 1.56 23.64 1.03 20.11 85.6 6.71 3.9 21.89 20.61 0.94 0.87 24.9 25.2 2.3

9.0 1.05 2.43 24.00 1.05 20.43 85.9 6.72 4.0 22.23 20.93 0.94 0.83 25.1 26.8 2.2

12.0 2.45 5.67 24.37 1.06 20.75 86.1 6.74 4.1 22.69 21.35 0.94 0.80 25.4 28.3 2.1

80

6.0 0.56 1.30 25.64 1.05 22.06 87.0 7.16 4.3 20.51 19.60 0.96 1.05 24.1 19.6 3.0

9.0 0.87 2.00 26.04 1.06 22.41 87.2 7.18 4.5 20.83 19.91 0.96 1.00 24.2 20.9 2.8

12.0 2.27 5.23 26.43 1.08 22.76 87.5 7.20 4.6 21.26 20.32 0.96 0.97 24.6 22.0 2.7

90

6.0 0.45 1.04 27.65 1.07 24.01 88.3 7.60 4.9 18.92 18.03 0.95 1.23 23.1 15.4 3.7

9.0 0.68 1.57 28.07 1.08 24.39 88.6 7.62 5.0 19.21 18.31 0.95 1.17 23.2 16.4 3.5

12.0 2.08 4.80 28.50 1.09 24.77 88.8 7.64 5.2 19.61 18.69 0.95 1.14 23.5 17.3 3.4

100

6.0 0.34 0.78



9.0 0.49 1.14 18.33 17.49 0.95 1.35 22.9 13.6 4.4

12.0 1.89 4.37 18.61 17.84 0.96 1.30 23.1 14.3 4.2

110


9.0 0.31 0.71 17.34 16.66 0.96 1.51 22.5 11.5 5.4

12.0 1.71 3.94 17.61 17.00 0.97 1.47 22.6 12.0 5.1

120


9.0 0.12 0.27 16.06 15.68 0.98 1.65 21.7 9.7 6.5

12.0 1.52 3.51 16.30 16.00 0.98 1.60 21.8 10.2 6.2

8/24/2016

1400 CFM




SD2750AU 09/18 23



EWT °F

Flow gpm


psi FT HC MBtu/h

Power kW

HE MBtu/h

LAT °F COP HWC

MBtu/hTC

MBtu/hSC

MBtu/hS/T

RatioPower

kWHR


20



21.0 7.99 18.45 58.0 5.00 40.9 94.9 3.40 7.1

30


18.0 6.00 13.86 63.1 5.30 45.0 97.2 3.49 7.6 78.2 51.5 0.66 3.17 89.0 24.7 ---

21.0 7.80 18.02 65.0 5.37 46.7 98.1 3.55 7.8 79.0 52.0 0.66 3.00 89.2 26.3 ---

40


18.0 5.81 13.43 69.4 5.58 50.3 100.1 3.65 8.4 79.2 51.9 0.66 3.64 91.6 21.8 ---

21.0 7.61 17.59 71.5 5.65 52.3 101.1 3.71 8.6 80.0 52.4 0.66 3.45 91.7 23.2 ---

50

15.0 4.13 9.53 72.4 5.76 52.7 101.5 3.68 9.2 79.6 51.3 0.64 4.46 94.8 17.8 4.6

18.0 5.63 13.00 75.7 5.85 55.7 103.0 3.79 9.4 80.1 52.3 0.65 4.11 94.2 19.5 4.4

21.0 7.43 17.15 78.0 5.92 57.8 104.1 3.86 9.7 81.0 52.9 0.65 3.90 94.3 20.8 4.2

60

15.0 3.94 9.10 85.9 6.12 65.1 107.8 4.12 10.3 76.7 50.5 0.66 4.66 92.6 16.5 5.6

18.0 5.44 12.57 89.8 6.21 68.6 109.6 4.24 10.6 77.8 51.3 0.66 4.44 92.9 17.5 5.3

21.0 7.24 16.72 92.6 6.29 71.1 110.9 4.31 10.9 79.1 52.4 0.66 4.30 93.8 18.4 5.1

70

15.0 3.75 8.67 89.9 6.48 67.8 109.6 4.07 11.6 74.3 49.8 0.67 4.87 91.0 15.2 7.0

18.0 5.25 12.13 94.0 6.57 71.6 111.5 4.19 11.9 75.5 50.5 0.67 4.65 91.4 16.2 6.7

21.0 7.05 16.29 96.9 6.66 74.2 112.9 4.27 12.3 77.0 51.6 0.67 4.50 92.4 17.1 6.4

80

15.0 3.57 8.24 94.6 6.66 71.9 111.8 4.16 13.0 72.5 49.1 0.68 5.20 90.3 14.0 8.9

18.0 5.07 11.70 98.9 6.77 75.8 113.8 4.28 13.4 73.7 49.8 0.68 4.96 90.6 14.9 8.4

21.0 6.87 15.86 102.0 6.85 78.6 115.2 4.36 13.8 75.2 50.8 0.68 4.80 91.6 15.7 8.0

90

15.0 3.38 7.81 99.3 6.85 75.9 114.0 4.25 14.7 67.2 48.3 0.72 5.42 85.7 12.4 11.1

18.0 4.88 11.27 103.8 6.96 80.0 116.1 4.37 15.1 68.3 49.0 0.72 5.17 85.9 13.2 10.6

21.0 6.68 15.43 107.0 7.04 83.0 117.5 4.45 15.6 69.7 50.0 0.72 5.00 86.7 13.9 10.1

100

15.0 3.19 7.37



18.0 4.69 10.84 62.9 46.6 0.74 5.94 83.1 10.6 13.2

21.0 6.49 15.00 63.8 47.5 0.74 5.75 83.4 11.1 12.5

110


18.0 4.51 10.41 57.1 44.1 0.77 6.68 79.9 8.5 16.1

21.0 6.31 14.57 58.0 45.0 0.78 6.50 80.2 8.9 15.3

120


18.0 4.32 9.98 50.3 41.3 0.82 7.69 76.5 6.5 19.5

21.0 6.12 14.13 51.1 42.1 0.83 7.46 76.5 6.8 18.5

8/24/2016

2000 CFM




SD2750AU 09/18 24


Wiring Schematics

Commercial Variable Speed - 208-230/60/1

Violet(14)

TRV

CC

HP

Condensate

Black(10)

Black(9)

Blue(8)

Blue(7)

LP

Black

Black

FP2

TYellow

Yellow

FP1

Orange(2)

Orange(1)

RV

Black(15)

GreenBrown(23)

Violet(42)

Blue(24)

Yellow(25)

Green/Yellow(28)AID Tool

Communica ng Thermostat

SUC

P

BLOWER CT

HW HW

HOT WATEROPTION

Blue

Blue

NO TE: 6

SCT

P8

MOT

OR P6

RS48

5 P7

ZONE P9

ABC

STEP

PER

ANA

ACC2

DHDI

V

NO

CO

M

K6

NO

CO

M

K5

C R L1 L1 L2 L2P1

2P1

0P5

P11

CR(-)(+) CR(-)(+) CR(-)(+)

P4P2

K1K2

K3

HA2

HA1

SGI

LOO

PVS

DAT

AVS

PUM

PPU

MPSL

AVE

P3

V+CRTXRX +5

P14

LLT

P1LA

TFL

OW

LWT

EWT

CT2

43

CT2

43

CT1

21

CT1

21

StatusG

DISC

HP1

6

P17

P18

P15

(Aurora Expansion Board)AXB™

See Figure 1 for DHW wiring.

SW1

Modbus Add. IDFuture Use

12345

ONOFF

Future UseAcc 2 – Dip 4Acc 2 – Dip 5

CFM

P13

P4

SW1

P5JW2

P9

LO

O/B

Y2WDH

P8 P7

RS485 NET RS485 NET

P6

RS485 EXP

P3

SW2

On

Future Use L Output Type

CC – Dual/SingleAcc – Dip 5Acc – Dip 4

RV – B/OFP2 – 15°F/30°FFP1 – 15°F/30°F

Com1LED5

Com2LED5

Test Mode

F1-3A

P1

C

PWM

12345678

ALMALGACC COMACC NOACC NC

RC

GY1

EH2CEH1CCOC R - +C R - +

Off

Faul tLED1

R

StatusLED3

ConfigLED2

CC2 CC F C R F FG CC CCGCC2HI

CC2LO

CC2G REVREVFP1 FP1 FP2 FP2 LPS LPSHPSHPS

Aurora Base Control(ABC)

K1-RV Relay

K2-CC Relay

K3-CC2 Relay

K4-Fan RelayK5-Alarm Relay

K6-Acc Relay

F

R

C

CCGY1C

R

ESLS

P2EH1

YG G

G

CS

+5C

S+5

21

CC

INOU

T

Pink(140)Pink(139)

T Purple

Purple

GNDOUT5DC

324

Green(134)White(133)Brown(132)

324

FL OW M ETER

Gray(136)

Gray(135)

White

WhiteT

White

White

Black

Black

Orange

Orange

Dehumidification Output

Accessory 2 Output

Analog Output 0-10VDC

VS Drive Fan

AUXILIARY HEAT CT

NO TE: 5

Blue (254) T Blue (255)

GNDOUT

RedWhiteBlack PRESSURE

TRANSDUCER5DC3

21

T

Black

Red

GNDOUT5DC

123

White

PRESSURE TRANSDUCER

1234

+X1X2Y1

5 Y2

ELECTRONIC EXPANSION

VALVE

Orange

Red

Yellow

Black

Gray

Gray (60)RH

Gray

(61)

Thermistor

Relay Coi l

Switch - Condensate OverflowSwitch - High pressure

Switch - Low pressure

Polarized connector

Factory Low Voltage WiringFactory Line Vol tage WiringField Low Voltage WiringField Line Voltage Wi ringOptional BlockDC Voltage PCB Traces

Internal JunctionQuick Connect Terminal

Field Wiring Lug

Ground

Relay Con tacts – N.O., N.C.

Field Zone Sensor Wi ring

Legend

L1

Capacitor

T

123

CC – Compressor ContactorCO – Condensate Overflow SensorES – Emergency ShutdownHP – High Pressure SwitchLP – Low Pressure SwitchFD – Freeze De tection SensorF1 – Fuse

Fuse

Light Emitti ng Diode - GreenG

Light Emitti ng Diode - YellowY

Light Emitti ng Diode - RedR

SW1 – Push buttonSW2 – DIP package 8 positionRB – Blower RelayRV – Reversing Valve Coi lPGM – Phase Guard Moni torRH – Reheat Valve Coi l

Black

Black

1 – Optional, factory installed unit mounted disconnect.2 – Swap blue and red leads for 208V operation.3 – Optional, factory installed modulating valve.

Notes:

4 – On units with a Perfect Speed 1 hp ECM blower motor, the blower’s low voltage harness from the board with the P12 connector will connect to a jumper harness that is connected to the blower motor.5 - Wires provided for Auxiliary Heat low voltage control . Wires are secured at blower.6 – Brown blower power wire routed through Current Transducer two times.

T Brown(253)

Brown(252)

VS

GND24 VAC

0-10DC

12

3

R

C

ABC BOARD

AXB BOARD

OPTIONAL MODULATING VALVE

12

Red

WhiteGreen

Brown

Brown

Black

Black




SD2750AU 09/18 25


Wiring Schematics cont.

Commercial Variable Speed - 208-230/60/1

NOTE 6

ECM BlowerMotor

P112 3 4 51

Green

16 112 15 10

PWM

C1 C2R G

33

CFM

L2 L1

CCT2 T1

T1T3

T2

Black

RedMetal Flexible Conduit

Ferrite Toroid

Green

YellowU

V

W

L

N

Gnd

A1HPS

DSCH TEMP

RS485

Black

EmersonVariable Speed

Drive

A23

14

2

T

H1

H2PFC Reactor

Green

BLOWERCURRENT TRANSDUCER

(CT)

DisconnectNeutralGround

L1 L1

L2 L2

L3 L3

Unit Power Supply208-230-265/60/1

G

Black (95)

Red (97)

Green (93)

EMI Filter

L1 OUT

L2 OUT

L1 IN

L2 IN

Brown

Orange

Transfo rmer

Blue230V265V Black

Red208V

Yellow

Black/White

24V

Yellow

Green

High Pressure SwitchYellow

BrownBrown

Black

GND

Black

Yellow

Ferrite Toroid




SD2750AU 09/18 26



Commercial Variable Speed - 460/60/3

Violet(14)

TRV

CC

HP

Condensate

Black(10)

Black(9)

Blue(8)

Blue(7)

LP

Black

Black

FP2

TYellow

Yellow

FP1

Orange(2)

Orange(1)

RV

Black(15)

GreenBrown(23)

Violet(42)

Blue(24)

Yellow(25)

Green/Yellow(28)AID Tool

Communica ng Thermostat

SUC

P

BLOWER CT

HW HW

HOT WATEROPTION

Blue

Blue

NO TE: 5

SCT

P8

MOT

OR P6

RS48

5 P7

ZONE P9

ABC

STEP

PER

ANA

ACC2

DHDI

V

NO

CO

M

K6

NO

CO

M

K5

C R L1 L1 L2 L2P1

2P1

0P5

P11

CR(-)(+) CR(-)(+) CR(-)(+)

P4P2

K1K2

K3

HA2

HA1

SGI

LOO

PVS

DAT

AVS

PUM

PPU

MPSL

AVE

P3

V+CRTXRX +5

P14

LLT

P1LA

TFL

OW

LWT

EWT

CT2

43

CT2

43

CT1

21

CT1

21

StatusG

DISC

HP1

6

P17

P18

P15



SW1


12345

ONOFF


CFM

P13

P4

SW1

P5JW2

P9

LO

O/B

Y2WDH

P8 P7

RS485 NET RS485 NET

P6

RS485 EXP

P3

SW2

On

Future Use L Output Type

CC – Dual/SingleAcc – Dip 5Acc – Dip 4

RV – B/OFP2 – 15°F/30°FFP1 – 15°F/30°F

Com1LED5

Com2LED5

Test Mode

F1-3A

P1

C

PWM

12345678

ALMALGACC COMACC NOACC NC

RC

GY1

EH2CEH1CCOC R - +C R - +

Off

Faul tLED1

R

StatusLED3

ConfigLED2

CC2 CC F C R F FG CC CCGCC2HI

CC2LO

CC2G REVREV FP1 FP1 FP2 FP2 LPS LPSHPSHPS

Aurora Base Control(ABC)

K1-RV Relay

K2-CC Relay

K3-CC2 Relay

K4-Fan RelayK5-Alarm Relay

K6-Acc Relay

F

R

C

CCGY1C

R

ESLS

P2EH1

YG G

G

CS

+5C

S+5

21

CC

INOU

T

Pink(140)Pink(139)

T Purple

Purple

GNDOUT5DC

324

Green(134)White(133)Brown(132)

324

FL OW M ETER

Gray(136)

Gray(135)

White

WhiteT

White

White

Black

Black

Orange

Orange

Dehumidification Output

Accessory 2 Output

Analog Output 0-10VDC

VS Drive Fan

AUXILIARY HEAT CT

NO TE: 4

Blue (254) T Blue (255)

GNDOUT

RedWhiteBlack PRESSURE

TRANSDUCER5DC3

21

T

Black

Red

GNDOUT5DC

123

White

PRESSURE TRANSDUCER

1234

+X1X2Y1

5 Y2

ELECTRONIC EXPANSION

VALVE

Orange

Red

Yellow

Black

Gray

DisconnectNeutralGround

L1 L1

L2 L2

L3 L3

Unit Power Supply460/60/3

G

Black (95)

Red (97)

Green (93)

Gray (60)RH

Gray

(61)

Black

Black

T Brown(253)

Brown(252)

VS

GND24 VAC

0-10DC

12

3

R

C

ABC BOARD

AXB BOARD

OPTIONAL MODULATING VALVE

12

Red

WhiteGreen

Brown

Orange

Transfo rmer

Blue460V

Black

Yellow

Black/White

24V

Brown

Brown

Black

Black

L2L3

CCT2T3

L1

T1

Blue

Black

Red

Gray (94)

Yellow (96)

N

L1

L2

L3

PB1

Black (54)

Blue (55)

Red (56)




SD2750AU 09/18 27



Commercial Variable Speed - 460/60/3

Current Transducer (CT)

Thermistor

Light emi tting diode - Green

Relay coil

Capacitor w/ bleed resistor

Switch - Condensate overflow

Switch - High pressure


Polarized connector

Factory Low voltage wi ringFactory Line vol tage wiringField low voltage wiringField l ine voltage wi ringOptional blockDC Voltage PCB tracesJunctionQuick connect terminal

Wire nut

Field wi re lug

Ground

Fuse

CC -CO -K5 -K6 -CR3 -CR4 -

F1 and F2 -

WCL -

HE -HP -

LP -

PB1, PB2 - PS -RV -SW1 -SW1 -SW2 -

TS -

Compressor ContactorCondensate overflow sensorDHW pump relayLoop pump relay

Fuses

Water Coil Limit Sensor

Heater elementHigh pressure switch

Low pressure switch

Power blocksPower stripReversing Valve coilDIP package 5 position AXBTEST MODE ABC BoardDIP package 8 position ABC Board

Thermal limit swi tch

Legend

Relay Con tacts-N.O., N.C.

G

T

132P

L1

PSC Fan Speed RelayPSC Fan Power Relay

ER1 to ER4 - Aux heat stage relays

HWL - Hot water limit sensorSC - Start Contactor

Start RelaySR -

CS - Compressor Solenoid

Breaker

09/15/16

NO TE 5

ECM BlowerMotor

P112 3 4 51

Green

16 112 15 10

PWM

C1 C2R G

33

CFM

T1T3

T2

Black

RedMetal Flexible Conduit

Ferrite Toroid

Green

Yellow

Black

T

PFC Reactor

Green

BLOWERCURRENT TRANSDUCER

(CT)

1 – Optional, factory installed unit mounted disconnect.2 – Optional, factory installed modulating valve.

Notes:

3 – On units with a Perfect Speed 1 hp ECM blower motor, the blower’s low voltage harness from the board with the P12 connector will connect to a jumper harness that is connected to the blower motor.4 - Wires provided for Auxiliary Heat low voltage control . Wires are secured at blower .5 – Brown blower power wire routed through Current Transducer two times.

Green

Red

Black

Blue

EMI Fi lter

L1 OUT

L2 OUTL2 IN

L3 IN L3 OUT

L1 IN

GND

Ferrite Toroid

High Pressure SwitchYellow

BrownBrown

DC BOARD

UVW

L3

L2

L1

A1HPS

DSCH TEMP

RS485

EmersonVariable Speed

Drive A23

14

2DC-OUT

DC+OUT

Gnd

DC+IN

DC-OUT

DC-IN

DC+OUT

DC+IN DC-INGreen




SD2750AU 09/18 28


Commercial Variable Speed


Vari

ab

le S

pe

ed

Dri

ve

Ad

dit

ion

sA

BC

Acti

on

AID

To

ol

Dis

pla

y a

nd

His

tory

Inte

lliZ

on

e2

an

d T

he

rmo

stat

Dis

pla

y

Re

d F

au

lt L

ED

LE

D F

lash

C

od

e *

Lo

cko

ut

Re

set/

R

em

ove

Fau

lt C

on

dit

ion

Su

mm

ary

AB

C G

ree

n

Sta

tus

LE

DA

BC

Re

d

Fau

lt L

ED

ABC & AXB Basic Faults

No

rmal -

No

Fau

lts

Off

-

Fau

lt-I

np

ut

1N

oA

uto

Tst

at

inp

ut

err

or.

Au

tore

set

up

on

co

nd

itio

n r

em

oval.

No

rmal

Co

de 1

Fau

lt-H

igh

Pre

ssu

re2

Yes

Hard

or

So

ftH

P s

wit

ch

has

trip

ped

(>

60

0 p

si)

Lo

cko

ut

Co

de 2

Lo

cko

ut

- E

2

Hig

h P

ress

Lo

cko

ut

- E

2

Hig

h P

ress

Fau

lt-L

ow

Pre

ssu

re3

Yes

Hard

or

So

ftL

ow

Pre

ssu

re S

wit

ch

has

trip

ped

(<

40

psi

fo

r 3

0 c

on

tin

ou

s se

c.)

Lo

cko

ut

Co

de 3

Lo

cko

ut

- E

3

Lo

w P

ress

Lo

cko

ut

- E

3

Lo

w P

ress

Fau

lt-F

reeze D

ete

cti

on

FP

24

Yes

Hard

or

So

ftF

reeze p

rote

cti

on

sen

sor

has

trip

ped

(<

30

deg

F f

or

30

co

nti

nu

ou

s se

c.)

Lo

cko

ut

Co

de 4

Lo

cko

ut

- E

4

Fre

eze D

ete

cti

on

FP

2L

ocko

ut

- E

4

Fre

eze D

ete

cti

on

FP

2

Fau

lt-F

reeze D

ete

cti

on

FP

15

Yes

Hard

or

So

ftF

reeze p

rote

cti

on

sen

sor

has

trip

ped

(<

15 o

r 3

0 d

eg

F f

or

30

co

nti

nu

ou

s se

c.)

Lo

cko

ut

Co

de 5

Lo

cko

ut

- E

5

Fre

eze D

ete

cti

on

FP

1L

ocko

ut

- E

5

Fre

eze D

ete

cti

on

FP

1

Fau

lt-C

on

den

sate

Overf

low

7Y

es

Hard

or

So

ftC

on

den

sate

sw

itch

has

sho

wn

co

nti

nu

ity f

or

30

co

nti

nu

ou

s se

c.

Lo

cko

ut

Co

de 7

Lo

cko

ut

- E

7 C

on

den

sate

Lo

cko

ut

- E

7 C

on

den

sate

Fau

lt-O

ver/

Un

der

Vo

ltag

e8

No

**A

uto

Inst

an

tan

eo

us

Vo

ltag

e is

ou

t o

f ra

ng

e. **

Co

ntr

ols

sh

ut

do

wn

un

til re

solv

ed

.L

ocko

ut

Co

de 8

Lo

cko

ut

- E

8

Over/

Un

der

vo

ltag

eL

ocko

ut

- E

8

Over/

Un

der

vo

ltag

e

Fau

lt-F

P1

& 2

Sn

sr E

rro

r11

Yes

Hard

or

So

ftIf

FP

1 o

r 2 S

en

sor

Err

Lo

cko

ut

Co

de 1

1L

ocko

ut

- E

11 F

P1/

FP

2 S

en

sor

Err

or

Lo

cko

ut

- E

11 F

P1/

FP

2 S

en

sor

Err

or

Miscellaneous

No

n-C

riti

cA

XB

Sn

srE

rr13

No

Au

toA

ny O

ther

Sen

sor

Err

No

rmal

Co

de 1

3A

lert

- E

13 N

on

-Cri

tical A

XB

Sen

sor

Err

or

Ale

rt -

E13

No

n-C

riti

cal A

XB

Sen

sor

Err

or

Cri

ticA

XB

Sn

srE

rr14

Yes

Hard

or

So

ftS

en

sor

Err

fo

r E

EV

or

HW

Lo

cko

ut

Co

de 1

4L

ocko

ut

- E

14 C

riti

cal A

XB

Sen

sor

Err

or

Lo

cko

ut

- E

14 C

riti

cal A

XB

Sen

sor

Err

or

Ala

rm-H

otW

tr15

No

Au

toH

W o

ver

limit

or

log

ic lo

cko

ut.

HW

pu

mp

deacti

vate

d.

No

rmal

Co

de 1

5A

lert

- E

15 H

ot

Wate

r Te

mp

Lim

itN

o D

isp

lay

Fau

lt-V

arS

pd

Pu

mp

16N

oA

uto

Ale

rt is

read

fro

m P

WM

feed

back.

No

rmal

Co

de 1

6A

lert

- E

16 V

ar

Sp

d P

um

p E

rrA

lert

- E

16 V

ar

Sp

d P

um

p E

rr

No

t U

sed

17N

oA

uto

IZ2 C

om

Fau

lt. A

uto

rese

t u

po

n c

on

dit

ion

rem

oval.

No

rmal

Co

de 1

7W

arn

ing

- E

17 IZ

2 C

om

m E

rro

rW

arn

ing

- E

17 IZ

2 C

om

m E

rro

r

No

n-C

ritC

om

Err

18N

oA

uto

An

y n

on

-cri

tical co

m e

rro

rN

orm

al

Co

de 1

8A

lert

- E

18 N

on

-Cri

tical C

om

mu

nic

a-

tio

n E

rro

rA

lert

- E

18 N

on

-Cri

tical C

om

mu

nic

a-

tio

n E

rro

r

Fau

lt-C

ritC

om

Err

19N

oA

uto

An

y c

riti

cal co

m e

rro

r. A

uto

rese

t u

po

n c

on

dit

ion

rem

oval

No

rmal

Co

de 1

9A

lert

- E

19 C

riti

cal C

om

mu

nic

ati

on

Err

or

Ale

rt -

E19

Cri

tical C

om

mu

nic

ati

on

Err

or

Ala

rm -

Lo

w L

oo

p P

ress

ure

21

No

Au

toL

oo

p p

ress

ure

is

belo

w 3

psi

fo

r m

ore

th

an

3 m

inu

tes

No

rmal

Co

de 2

1A

lert

- E

21

Lo

w L

oo

p P

ress

ure

No

Dis

pla

y

Ala

rm -

Ho

me A

uto

mati

on

123

No

Au

toC

lose

d c

on

tact

inp

ut

is p

rese

nt

on

Dig

2 in

pu

t -

Text

is c

on

fig

ura

ble

No

rmal

Co

de 2

3A

lert

- E

23

Sele

cte

d c

ho

ice

Ale

rt -

E23

Sele

cte

d c

ho

ice

Ala

rm -

Ho

me A

uto

mati

on

224

No

Au

toC

lose

d c

on

tact

inp

ut

is p

rese

nt

on

Dig

3 in

pu

t -

Text

is c

on

fig

ura

ble

No

rmal

Co

de 2

4A

lert

- E

24

Sele

cte

d C

ho

ice

Ale

rt -

E24

Sele

cte

d C

ho

ice

Copeland VS Drive

Dera

te-D

riveTe

mp

41

No

Au

toD

rive T

em

p h

as

reach

ed

cri

tical H

igh

Tem

pD

era

ted

Co

de 4

1W

arn

ing

! D

era

ted

- E

41

Dri

veTe

mp

Warn

ing

! D

era

ted

- E

41

Dri

veTe

mp

Dera

te-O

utP

wrL

mt

46

No

Au

toS

up

ply

Vo

ltag

e is

low

or

Max P

wr

is r

each

ed

du

e t

o h

igh

pre

ssu

reD

era

ted

Co

de 4

6W

arn

ing

! D

era

ted

- E

46

Ou

tPw

rLm

tW

arn

ing

! D

era

ted

- E

46

Ou

tPw

rLm

t

Fau

lt-D

isTm

pS

nr

51

Yes

Hard

or

So

ftD

isch

arg

e S

en

sor

(Sd

) is

> 2

80

F o

r in

valid

(-7

6 t

o 3

92 F

)L

ocko

ut

Co

de 5

1L

ocko

ut!

- E

51

Dis

Tm

pS

nr

Lo

cko

ut!

- E

51

Dis

Tm

pS

nr

Fau

lt-S

ucP

rsS

nr

52

Yes

Hard

or

So

ftS

ucti

on

Pre

ssu

re (

P0

) is

invalid

(0

to

29

0 p

si)

Lo

cko

ut

Co

de 5

2L

ocko

ut!

- E

52 S

ucP

rsS

nr

Lo

cko

ut!

- E

52 S

ucP

rsS

nr

Fau

lt-C

on

Prs

Sn

r5

310

x

then

Y

es

Hard

or

So

ftJu

mp

er

mis

sin

g f

rom

dri

ve p

in A

1 to

A2

No

rm t

hen

L

ocko

ut

Co

de 5

3L

ocko

ut!

- E

53

Co

nP

rsS

nr

Lo

cko

ut!

- E

53

Co

nP

rsS

nr

Fau

lt-L

ow

Su

pV

olt

54

Yes

Hard

or

So

ftS

up

ply

Vo

ltag

e is

<17

5 V

(19

0V

to

rese

t) o

r p

ow

ere

d o

ff/o

n t

oo

qu

ickly

(<

30

se

c.)

.L

ocko

ut

Co

de 5

4L

ocko

ut!

- E

54

Lo

wS

up

Vo

ltL

ocko

ut!

- E

54

Lo

wS

up

Vo

lt

Fau

lt-O

utE

nvelo

p5

510

x

then

Y

es

Hard

or

So

ftC

om

p O

pera

tin

g o

ut

of

envelo

pe m

ore

th

an

90

sec. R

etr

y 1

0x.

No

rm t

hen

L

ocko

ut

Co

de 5

5L

ocko

ut!

- E

55

Ou

tEnvelo

pL

ocko

ut!

- E

55

Ou

tEnvelo

p

Fau

lt-O

verC

urr

nt

56

Yes

Hard

or

So

ftO

ver

cu

rren

t tr

ipp

ed

by p

hase

lo

ss, eart

h f

au

lt, sh

ort

cir

cu

it. C

heck m

oto

r w

ind

ing

s/w

irin

g c

on

necti

on

sL

ocko

ut

Co

de 5

6L

ocko

ut!

- E

56

OverC

urr

nt

Lo

cko

ut!

- E

56

OverC

urr

nt

Fau

lt-O

ver/

Un

derV

olt

57

Yes

Hard

or

So

ftO

ver/

Un

der

AC

in

pu

t vo

ltag

e o

r O

ver/

Un

der

DC

Bu

s V

olt

ag

e

Lo

cko

ut

Co

de 5

7L

ocko

ut!

- E

57 O

ver/

Un

der

Vo

ltL

ocko

ut!

- E

57 O

ver/

Un

der

Vo

lt

Fau

lt-H

iDri

vTe

mp

58

Yes

Hard

or

So

ftO

ver

tem

pera

ture

of

PF

C-I

GB

T/P

ow

er

Mo

du

le. C

heck d

rive a

irfl

ow

/co

mp

res-

sor

op

era

tio

nL

ocko

ut

Co

de 5

8L

ocko

ut!

- E

58

HiD

rivTe

mp

Lo

cko

ut!

- E

58

HiD

rivTe

mp

Fau

lt-D

rvIn

tErr

MO

C/A

OC

59

Yes

Hard

or

So

ftM

icro

ele

ctr

on

ic/E

EP

RO

M f

au

lt h

as

occu

rred

. C

heck c

om

mu

nic

ati

on

s/P

ow

er

Cycle

/DC

Bu

s V

olt

L

ocko

ut

Co

de 5

9L

ocko

ut!

- E

59

Drv

IntE

rrL

ocko

ut!

- E

59

Drv

IntE

rr

Fau

lt-M

ult

Safe

Md

61

Yes

Hard

or

So

ftC

om

mu

nic

ati

on

/Co

nfi

gu

rati

on

Err

or

has

occu

rred

L

ocko

ut

Co

de 6

1L

ocko

ut!

- E

61

Mu

ltS

afe

Md

Lo

cko

ut!

- E

61

Mu

ltS

afe

Md

Fau

lt-P

FC

-IG

BT/O

pen

Sen

sor

62

Yes

Hard

or

So

ftP

ow

er

Mo

du

le T

em

p L

ow

/Op

en

Sen

sor

Fau

lt/P

FC

-IG

BT

Tem

p L

ow

Lo

cko

ut

Co

de 6

2L

ocko

ut!

- E

62 L

ow

Tem

pL

ocko

ut!

- E

62 L

ow

Tem

p

Fau

lt-L

imit

Lo

cko

ut

63

Yes

Hard

or

So

ftD

isch

arg

e T

em

p/o

rHig

h D

rive T

em

p/o

rOp

en

Sen

sor

fau

lt lim

its

have b

een

re

ach

ed

Lo

cko

ut

Co

de 6

3L

ocko

ut!

- E

63

Fau

ltL

imt

Lo

cko

ut!

- E

63

Fau

ltL

imt

Counter

Syst

em

Rese

t

99

No

Au

toS

yst

em

Rese

t C

ou

nte

r H

isto

ryN

AC

od

e 9

9F

au

lt H

isto

ry -

E9

9 S

ysR

ese

tN

o D

isp

lay

No

te: *A

ll co

des

>11

u

se lo

ng

fla

sh f

or

ten

s d

igit

an

d s

ho

rt f

lash

fo

r th

e o

nes

dig

it. 2

0, 3

0, 4

0, 5

0 e

tc. are

skip

ped

!

A

lert

' is

a n

on

cri

tical se

nso

r o

r fu

ncti

on

th

at

has

faile

d. N

orm

al o

pera

tio

n o

f th

e h

eat

pu

mp

is

main

tain

ed

bu

t se

rvic

e is

desi

red

at

som

e p

oin

t.




SD2750AU 09/18 29


Commercial Variable Speed

DESCRIPTION SW2-4 SW2-5Cycle with Blower ON ONCycle with Compressor OFF OFFWater Valve Slow Opening ON OFFCycle with Comm. T-stat Hum Cmd OFF ON

ABC SW2 Accessory Relay

SW1-4 SW1-5 DESCRIPTIONON ON Cycles with BlowerOFF ON Cycles with CC rst stage compressor or compressor spd 1-12ON OFF Cycles with CC2 second stage of compressor or comp spd 7-12OFF OFF Cycles with DH from ABC board

AXB Accessory 2 DIP Se ngs

Thermistor

Relay Coi l

Switch - Condensate OverflowSwitch - High pressure


Polarized connector

Factory Low Voltage WiringFactory Line Vol tage WiringField Low Voltage WiringField Line Voltage Wi ringOptional BlockDC Voltage PCB Traces

Internal Ju nctionQuick Con nect Terminal

Field Wiring Lug

Ground

Relay Con tacts – N.O., N.C.

Field Zone Sensor Wi ring

Legend

L1

Capacitor

T

123

CC – Compressor ContactorCO – Condensate Overflow SensorES – Emergency ShutdownHP – High Pressure SwitchLP – Low Pressure SwitchFD – Freeze De tection SensorF1 – Fuse

Fuse

Light Emitti ng Diode - GreenG

Light Emitti ng Diode - YellowY

Light Emitti ng Diode - RedR

SW1 – Push buttonSW2 – DIP package 8 positionRB – Blower RelayRV – Reversing Valve Coi lPGM – Phase Guard Moni torRH – Reheat Valve Coi l


CC2

Fact

ory

Fault

ALG

ALM

LSES

ACC

c

Status

AuroraTM BaseControl

RV – K1

CC

2

CC – K2

CC Hi – K3

Fan – K4

Alarm – K5

Acc – K6

ACC

no

ACC

nc

O/BCRLO G Y1 Y2 W DH

3A-F

use

O/BCRLO G Y1 Y2 W DH

LOG

HICCGCCFGFR

HPHPLP

FP2FP2FP1

REVREV

CFM

PWM

ECM PWM

Fact

ory

Factory Fan Connection

R R

CC

C

C

R

(-)

(+)

RS

485

EH2C

EH1C

CO

(+)(-)RC

RS4

85Ex

pFa

ctor

y

Com1

Com2

Config

G

G

G

YR

SW1 Test

FP1 – 15oF/30oF

JW2 - Alarm

P11

P5

P2 P1

P8

P7

P9

P6

P3

SW2

P13P4 FP2 – 15oF/30oF

RV – B/O

ACC – Dip 1

ACC – Dip 2

CC – Dual/SingleL – Pulse/Continuous

Reheat/Normal

Fact

ory

Use

Field ConnectionsField Connections

C

LP

FP1

F

CC

G

Y1

1

2

3

4

5

6

7

8

Off On

N/A

RS4

85 N

ET

EH1LED 1

LED 3

LED 2

LED 5

LED 4

SCT

SUC

PHW HW

MOTO

R

RS48

5

P7

ZONE

P9

ABC

STEP

PER

ANA

SPR

DHDI

V

NO

CO

M

K6

NO

CO

M

K5

C R L1 L1 L2 L2P1

2P1

0P5

P11

CR(-)(+) CR(-)(+) CR(-)(+)

P4P2

K1K2

K3

HA2

HA1

SGI

LOOP

PWM

VSSL

OSL

IP3

V+CRTXRX +5

P14

LLT

P1LA

TFL

OWLW

TEW

T

CT2

43

CT2

43

CT1

21

CT1

21

StatusG

DISC

HP1

6

P17

P18

P15



SW1


12345

ONOFF


P8 P6




SD2750AU 09/18 30


Engineering Guide Specifi cationsGeneralFurnish and install WaterFurnace Water Source Heat Pumps

as indicated on the plans. Equipment shall be completely

assembled, piped and internally wired. Capacities

and characteristics as listed in the schedule and the

specifi cations that follow. The reverse cycle heating/cooling

units shall be either suspended type with horizontal air inlet

and discharge or fl oor mounted type with horizontal air

inlet and vertical upfl ow air discharge. Units shall be AHRI/

ISO 13256-1 certifi ed and listed by a nationally recognized

safety-testing laboratory or agency, such as ETL Testing

Laboratory. Each unit shall be computer run-tested at the

factory with conditioned water and operation verifi ed to

catalog data. Each unit shall be mounted on a pallet and

shipped in a corrugated box or stretch-wrapped. The

units shall be designed to operate with entering liquid

temperature between 20°F and 120°F [-6.7°C and 48.9°C].

Casing and CabinetThe cabinet shall be fabricated from heavy-gauge galvanized

steel and fi nished with optional corrosion-resistant powder

coating. This corrosion protection system shall meet the

stringent 1000 hour salt spray test per ASTM B117. The

interior shall be insulated with 1/2 in. thick, multi-density,

cleanable aluminum foil coated glass fi ber with edges sealed

or tucked under fl anges to prevent the introduction of glass

fi bers into the discharge air. Standard cabinet panel insulation

must meet NFPA 90A requirements, air erosion and mold

growth limits of UL-181, stringent fungal resistance test per

ASTM-C1071 and ASTM G21, and shall meet zero level bacteria

growth per ASTM G22. Unit insulation must meet these

stringent requirements or unit(s) will not be accepted.

One (horizontal) to two (vertical) blower and two

compressor compartment access panels shall be ‘lift-out’

removable with supply and return ductwork in place.

A duct collar shall be provided on the supply air opening.

Standard size 1 in. [2.54 cm] MERV 4 fi lters shall be provided

with each unit. Units shall have a return air fi lter rack that

is fi eld convertible from 1 in. [2.54 cm] to 2 in. [5.1 cm]. The

upfl ow vertical units shall have a removable insulated divider

panel between the air handling section and the compressor

section to minimize the transmission of compressor noise

and to permit operational service testing without air bypass.

Vertical units shall be supplied with left or right horizontal air

inlet and top vertical air discharge. Horizontal units shall be

supplied with left or right air inlet and side or end air discharge.

The compressor shall be double isolation mounted using

selected durometer grommets to provide vibration free

compressor mounting. The compressor mounting bracket

shall be acoustically deadened galvanized steel to prevent

vibration transmission to the cabinet.

Option: AlpinePure MERV 13 Filter - A 2 in. thick [51 mm]

MERV 13 fi lter can help fulfi ll a credit under the LEED Rating

System. Its low initial resistance promotes low energy

consumption (0.21 in. w.g. @ 300 fpm) and provides nearly

twice the life of a standard fi lter (300 fpm vs. standard 500

fpm application).

Option: A Super Quiet Sound package shall include multi-

density full coverage compressor blanket.

Option: An internally mounted low pressure drop (high Cv) water solenoid valve shall be factory installed for use in

variable speed pumping applications.

Option: An internally mounted automatic fl ow regulator shall be set to 3 gpm/ton to deliver optimal fl ow to the unit.

Refrigerant CircuitAll units shall utilize the non-ozone depleting and low global

warming potential refrigerant R-410A. All units shall contain

a sealed refrigerant circuit including a hermetic motor-

compressor, bidirectional thermostatic expansion valve,

fi nned tube air-to-refrigerant heat exchanger, reversing

valve, coaxial tube water-to-refrigerant heat exchanger,

optional hot water generator coil, and service ports.

Compressors shall be high-effi ciency single speed rotary or

scroll type designed for heat pump duty and mounted on

vibration isolators. The compressor shall be double isolation

mounted using selected durometer grommets to provide

vibration free compressor mounting. Compressor motors

shall be single-phase PSC with overload protection.

Option: AlumiSeal electro-coated air coil.

The coaxial water-to-refrigerant heat exchanger shall be

designed for low water pressure drop and constructed of

a convoluted copper (cupronickel option) inner tube and

a steel outer tube. Refrigerant to air heat exchangers shall

utilize enhanced corrugated lanced aluminum fi ns and

rifl ed aluminum tube construction rated to withstand 600

psig (4135 kPa) refrigerant working pressure. Refrigerant

to water heat exchangers shall be of copper inner water

tube and steel refrigerant outer tube design, rated to

withstand 600 psig (4135 kPa) working refrigerant

pressure and 450 psig (3101 kPa) working water pressure.

The thermostatic expansion valve shall provide proper

superheat over the entire liquid temperature range with

minimal “hunting.” The valve shall operate bidirectionally

without the use of check valves.




SD2750AU 09/18 31


Engineering Guide Specifi cations cont.Option: Cupronickel refrigerant to water heat exchanger shall be of copper-nickel inner water tube and steel

refrigerant outer tube design, rated to withstand 600 psig

(4135 kPa) working refrigerant pressure and 450 psig (3101

kPa) working water pressure. Water lines shall also be of

cupronickel construction.

Option: Hot water generator - Internal double wall

vented hot water generator coil refrigerant to water heat

exchangers shall be of copper inner water tube and steel

refrigerant outer tube design, rated to withstand 600 psig

(4135 kPa) working refrigerant pressure and 450 psig (3101

kPa) working water pressure.

Option: ThermaShield coated water-to-refrigerant heat exchanger, water lines and refrigerant suction lines

shall be insulated to prevent condensation at low liquid

temperatures below 50°F.

Option: AlpinePure hot gas bypass

Blower Motor and AssemblyThe blower shall be a direct drive centrifugal type with a

dynamically balanced wheel. The housing and wheel shall

be designed for quiet low outlet velocity operation. The

blower housing shall be removable from the unit without

disconnecting the supply air ductwork for servicing of the

blower motor. The blower motor shall be isolated from the

housing by rubber grommets. The motor shall be permanently

lubricated and have thermostatic overload protection.

Variable speed ECM blower motor shall be a variable speed

ECM type. The variable speed ECM blower motor shall be

soft starting, shall maintain constant cfm over its operating

static range, and shall provide 12 cfm settings. Variable

speed ECM motors shall be long-life ball bearing type.

ElectricalA control box shall be located within the unit compressor

compartment and shall contain a 50VA or 75VA transformer,

24 volt activated, 2 pole compressor contactor, terminal

block for thermostat wiring and solid-state controller for

complete unit operation. Electromechanical operation WILL

NOT be accepted. Units shall be name-plated for use with

time delay fuses or HACR circuit breakers. Unit controls shall

be 24 volt and provide heating or cooling as required by the

remote thermostat/sensor.

An Aurora microprocessor-based controller that interfaces

with a multi-stage electronic thermostat to monitor and

control unit operation shall be provided. The control shall

provide operational sequencing, blower speed control,

high and low pressure switch monitoring, freeze detection,

condensate overfl ow sensing, lockout mode control, LED

status and fault indicators, fault memory, fi eld selectable

options and accessory output. The control shall provide fault

retry three times before locking out to limit nuisance trips.

A detachable terminal block with screw terminals will

be provided for fi eld control wiring. All units shall have

knockouts for entrance of low and line voltage wiring. The

blower motor and control box shall be harness plug wired

for easy removal.

Option: An Aurora Unitary Protocol Converter (UPC) shall be included that communicates directly with the Aurora

Heat Pump Controls and allows access/control of a variety

of internal Aurora heat pump operations such as sensors,

relay operation, faults and other information. In turn, the

UPC shall convert the internal Aurora Modbus protocol to

BACnet MS/TP, or N2 protocols for communication over a

BAS system. Additional individual unit confi guration items

such as ECM fan speeds or freeze protection settings shall

be directly available over the BAS without the need for

access to the actual heat pump.

Option: Aurora UPC DDC communication protocols: LonWorks

PipingSupply and return water connections shall be FPT copper

fi ttings fi xed to the corner post, which eliminate the need

for backup pipe wrenches.

With vertical units, the condensate connection shall be a 3/4

in. [19.1 mm] PVC socket with internally-trapped hose that

can be routed to front or side corner post locations.




SD2750AU 09/18 32


Engineering Guide Specifi cations cont.

Hanger Kit(included with horizontal units only - fi eld installed) The hanger kit shall consist of galvanized steel brackets,

bolts, lock washers, and isolators and shall be designed to

fasten to the unit bottom panel for suspension from 3/8 in.

threaded rods. Brackets shall not inhibit fi lter removal in any

way.

AccessoriesThermostat (field-installed)

A communicating auto-changeover electronic digital

thermostat shall be provided. The thermostat shall offer

variable speed heating and cooling staging with precise

temperature control. An OFF-HEAT-AUTO-COOL-EMERG

system switch, OFF-AUTO-INTERMITTENT blower switch,

and indicating display shall be provided. The thermostat

shall display in °F or °C. The thermostat shall provide real

time energy consumption data of the unit.

Color Touchscreen Thermostat (field-installed)

A color touchscreen communicating auto-changeover

electronic digital thermostat shall be provided. The

thermostat shall offer variable speed heating and cooling

staging with precise temperature control. An OFF-

HEAT-AUTO-COOL-EMERG system switch, OFF-AUTO-

INTERMITTENT blower switch, and indicating display shall

be provided. The thermostat shall display in °F or °C. The

thermostat shall provide real time and historical energy

consumption data of the unit.

Hose Kits – Ball Valves (field-installed)

A fl exible steel braid hose featuring Kevlar® reinforced

EPDM core with ANSI 302/304 stainless steel outer braid

and fi re rated materials per ASTM E 84-00 (NFPA 255,

ANSI/UL 723 & UBC 8-1). Ball valve at one end; swivel

connector with adapter at the other end (swivel to adapter

connection via fi ber or EPDM gasket). Swivel connection

provides union between heat pump and piping system. The

hoses feature brass fi ttings, stainless steel ferrules. A full

port ball valve shall be provided with integral P/T (pressure/

temperature) port on supply hose.

Specifi cations:

• Temperature range of 35°F [2°C] to 180°F [82°C].

• Max. working pressure of 400 psi [2757 kPa] for 1/2 in.

and 3/4 in. hose kits; max. working pressure of 350 psi

[kPa] for 1 in. and 1-1/4 in. hose kits.

Hose Kits – Automatic Balancing and Ball Valves(field-installed)A flexible steel braid hose featuring Kevlar® reinforced EPDM

core with ANSI 302/304 stainless steel outer braid and fire

rated materials per ASTM E 84-00 (NFPA 255, ANSI/UL

723 & UBC 8-1). Ball valve at one end; swivel connector with

adapter at the other end (swivel to adapter connection via

fiber or EPDM gasket). Swivel connection provides union

between heat pump and piping system. The hoses feature

brass fittings, stainless steel ferrules. A full port ball valve

shall be provided with integral P/T (pressure/temperature)

port on supply hose and automatic balancing valve with

integral P/T ports and full port ball valve on return hose.

Specifi cations:

• Temperature range of 35°F [2°C] to 180°F [82°C]



[2413 kPa] for 1 in. and 1-1/4 in. hose kits

• Minimum burst pressure of four times working pressure

Hose Kits – Automatic Balancing and Ball Valves with ‘Y’ strainer (field-installed)A fl exible steel braid hose featuring Kevlar® reinforced

EPDM core with ANSI 302/304 stainless steel outer braid

and fi re rated materials per ASTM E 84-00 (NFPA 255,

ANSI/UL 723 & UBC 8-1). Ball valve at one end; swivel

connector with adapter at the other end (swivel to adapter

connection via fi ber or EPDM gasket). Swivel connection

provides union between heat pump and piping system.

The hoses feature brass fi ttings, stainless steel ferrules. A

“y” strainer is provided on one end for fl uid straining and

integral “blowdown” valve. A full port ball valve shall be

provided with integral P/T (pressure/temperature) port on

supply hose and automatic balancing valve with integral P/T

ports and full port ball valve on return hose.

Specifi cations:

• Temperature range of 35°F [2°C] to 180°F [82°C]



[2413 kPa] for 1 in. and 1-1/4 in. hose kits

• Minimum burst pressure of four times working pressure

Hot Water Pump KitAn accessory pump kit is available for hot water generation

option. This kit includes hot water pump, fi ttings, and water

heater kit necessary for potable water application.




SD2750AU 09/18 33


Revision Guide

Pages: Description: Date: By:

10 Made Correction to Blower Performance Data Notes 13 Sept 2018 MA

Misc. Removed Waterside Economizer Option, Hot Gas Reheat/Bypass Option 11 July 2017 MA

All Document Creation 20 Dec., 2016 JM

Documents

3-6 Tons Submittal Data - WaterFurnace3-6 Tons Submittal Data English Language/IP Units SD2750AU 09/18. ... W a te r Fl o w R e gu la to r M odulatin g Valv e Fl o w M e te r Re v.: