For Use with Gas or Oil Furnace as Dual Fuel Installation

The GTC Compressor Unit Sections are approved for use with certain 3rd Party A-Coils.

See Below.

All Models are Energy Star qualified for Ground Loop and Ground Water Applications.

Ratings Based on Approved Compressor and Fossil Fuel A-Coil

 

Fossil

 

 

 

Ground Loop Heat Pump — Tested & Certified to ISO 13256-1:1998

 

 

 

 

Cooling Brine

Heating Brine

 

Fuel

 

 

 

 

 

 

 

Full Load 77°F/Part Load 68°F

Full Load 32°F/Part Load 41°F

COMPRESSOR

A-Coil

System

 

 

SECTION

Bard No.

Capacity

Fluid Flow

 

Capacity

EER

Capacity

COP

MODEL

1

Modulation

Rate GPM

Airflow CFM

BTUH

BTU/W

BTUH

 

GTC36S1

1

Full

8

1200

39,000

18.20

27,200

4.00

Part

850

28,300

26.50

21,400

4.50

 

 

 

GTC48S1

1

Full

12

1500

48,000

17.50

35,000

3.80

Part

1150

37,000

22.60

28,000

4.00

 

 

 

GTC60S1

1

Full

15

1800

59,000

16.50

45,000

3.60

Part

1300

44,500

21.00

37,000

3.75

 

 

 

 

 

 

 

 

Ground Water Heat Pump — Tested & Certified to ISO 13256-1:1998

 

 

System

 

 

Cooling — EWT 59°F

Heating — EWT 50°F

 

 

Capacity

Fluid Flow

 

Capacity

EER

Capacity

COP

MODEL

 

Modulation

Rate GPM

Airflow CFM

BTUH

BTU/W

BTUH

 

 

GTC36S1

1

Full

6

1200

42,000

23.40

34,500

4.90

Part

850

29,600

31.80

24,700

5.00

 

 

 

GTC48S1

1

Full

7

1500

53,000

22.00

44,000

4.50

Part

1150

37,500

26.00

33,000

4.70

 

 

 

GTC60S1

1

Full

9

1800

63,000

20.80

54,000

4.20

Part

1300

45,500

25.25

39,500

4.30

 

 

 

ISO Standard 13256-1 (Water-to-Air and Brine-to-Air Heat Pumps) includes watt allowance for water pumping.

Cooling capacity based on 80.6F DB, 66.2F WB entering air temperature. Heating capacity based on 68F DB entering air temperature.

1See Cross-Reference Chart (Page 2) for approved Bard/ADP Coil part numbers. Charge must be adjusted when using a Fossil Fuel A-Coil. See Installation Manual.

A coil spacer with a minimum height of 6" must be used on all Oil Furnaces to protect the coil drain pan and ensure even airflow across the coil. GTLS-SK2-1 Line Set Stub Kit is required for installation to make connections to the GTC Compressor Section.

Correction Factors @ Increased Water Flows

Rated Flow

Cooling

Heating

Plus

 

 

 

 

BtuH

Watts

BtuH

Watts

 

2 GPM

1.005

0.988

1.006

1.002

 

 

 

 

 

3 GPM

1.007

0.984

1.009

1.003

 

 

 

 

 

4 GPM

1.008

0.979

1.011

1.003

 

 

 

 

 

Loop Pump Modules and Pump Outputs for Ground Loop Installations 1

Pump Models

No. of Pumps

 

WATER FLOW RATE REQUIRED IN GPM

 

7

9

12

15

16

 

 

DORFC-1

1

28.5

27.5

25

22.5

22

 

 

 

 

 

 

 

DORFC-2

2

57

55

50

45

44

1 Pump output (feet of head) @ GPM at top of column.

Antifreeze Percentages by Volume for Ground Loop Installations 1

Type

Minimum Temperature for Freeze Protection

 

10°F (-12.2°C)

15°F (-9.4°C)

20°F (-6.7°C)

25°F (-3.9°C)

 

 

 

Methanol

25%

21%

16%

10%

 

 

 

 

 

 

 

Ethanol 2

29%

25%

20%

14%

 

 

 

 

 

 

 

100% USP Food Grade Propylene Glycol

27%

24%

20%

13%

 

 

 

 

 

 

 

1 Loop antifreeze protection must be determined based on loop design and geographic location. 2 Must not be denatured with any petroleum based product.

Form No.

S3423-1112

Supersedes

S3423-912

Page

5 of 28

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Harbor Freight Tools R-410A manual For Use with Gas or Oil Furnace as Dual Fuel Installation

R-410A specifications

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