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Johnson Controls GCGD12, Technical Manual

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Johnson Controls GCGD12 Technical Manual Download Page 2

400038-UTG-B-0708

                            

2

Johnson Controls Unitary Products

All dimensions are in inches. They are subject to change 
without notice. Certified dimensions will be provided upon 
request.

Physical and Electrical Data

MODEL

GCGD12

S21S2

GCGD18

S21S2

GCGD24

S21S2

GCGD30

S21S2

GCGD36

S21S2

GCGD42

S21S2

GCGD48

S21S2

GCGD60

S21S2

Unit Supply Voltage

208-230V, 1

φ,

 60Hz

Normal Voltage Range 

1

187  to 252

Minimum Circuit Ampacity

6.2

9.5

11.3

14.0

18.2

19.9

22.7

33.5

Max. Overcurrent Device Amps 

2

15

15

15

20

30

30

35

50

Min. Overcurrent Device Amps 

3

15

15

15

15

20

20

25

35

Compressor Type 

Rotary

Rotary

Rotary

Recip

Recip

Recip

Recip

Scroll

Compressor Amps

Rated Load

4.5

7.2

8.4

10.6

13.4

14.7

17.0

25.6

Locked Rotor

26.0

40.0

47.0

61.0

78.0

78.0

86.0

150.0

Crankcase Heater

No

No

No

No

No

No

No

No

Fan Motor Amps

Rated Load

0.50

0.50

0.80

0.80

1.4

1.5

1.5

1.5

Fan Diameter Inches

18

18

18

18

18

22

22

22

Fan Motor

Rated HP

1/12

1/12

1/8

1/8

1/4

1/4

1/4

1/4

Nominal RPM

1100

1100

1075

1075

1100

850

850

850

Nominal CFM

1350

1550

1850

1950

2400

3000

3000

3300

Coil

Face Area Sq. Ft.

8.1

9.7

9.7

11.3

12.1

16.5

16.5

19.75

Rows  Deep

1

1

1

1

1

1

1

1

Fin / Inches

23

23

23

23

23

23

23

23

Liquid Line Set OD (Field Installed)

3/8

3/8

3/8

3/8

3/8

3/8

3/8

3/8

Vapor Line Set OD (Field Installed)

5/8

5/8

3/4

3/4

3/4

7/8

7/8

1-1/8

Unit Charge (Lbs. - Oz.) 

4

3 - 2

3 - 0

3 - 13

3 - 7

3 - 15

4 - 2

4 - 5

5 - 4

Charge Per Foot, Oz.

0.66

0.66

0.68

0.68

0.68

0.70

0.70

0.76

Operating Weight Lbs.

96

110

130

150

160

175

176

200

1. Rated in accordance with ARI Standard 110, utilization range “A”.
2. Dual element fuses or HACR circuit breaker. Maximum allowable overcurrent protection.
3. Dual element fuses or HACR circuit breaker. Minimum recommended overcurrent protection.
4. The Unit Charge is correct for the outdoor unit, matched indoor coil and 15 feet of refrigerant tubing. For tubing lengths other than 

15 feet, add or subtract the amount of refrigerant, using the difference in length multiplied by the per foot value.

B

A

C

DIMENSIONS

Unit

Model

Dimensions

(Inches)

Refrigerant Connection

Service Valve Size

A

1

1. Including Fan Guard.

B

C

Liquid

Vapor

12

24

23-1/2 23-1/2

3/8”

3/4”

18

28

23-1/2 23-1/2

24

28

23-1/2 23-1/2

30

32

23-1/2 23-1/2

36

34

23-1/2 23-1/2

42

34

29

29

7/8”

48

34

29

29

60

40

29

29

1-1/8”

Summary of Contents for GCGD12

Page 1: ...ns occur A liquid line filter drier further protects the compressor DURABLE FINISH The cabinet is made of pre painted steel The pre treated galvanized steel provides a better paint to steel bond which resists corrosion and rust creep Special primer formulas and matted textured finish insure less fading when exposed to sunlight LOWER INSTALLED COST Installation time and costs are reduced by easy po...

Page 2: ...50 1950 2400 3000 3000 3300 Coil Face Area Sq Ft 8 1 9 7 9 7 11 3 12 1 16 5 16 5 19 75 Rows Deep 1 1 1 1 1 1 1 1 Fin Inches 23 23 23 23 23 23 23 23 Liquid Line Set OD Field Installed 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 Vapor Line Set OD Field Installed 5 8 5 8 3 4 3 4 3 4 7 8 7 8 1 1 8 Unit Charge Lbs Oz 4 3 2 3 0 3 13 3 7 3 15 4 2 4 5 5 4 Charge Per Foot Oz 0 66 0 66 0 68 0 68 0 68 0 70 0 70 0 76 Ope...

Page 3: ... 0 FC MC PC UC36B2A 0 FC MC PC UC36C2A 0 FC MC PC37A2A 7 12 4 FC MC PC43B2C 0 FC MC PC43C2C 0 FC MC PC UC48C2C 5 2 FC MC PC UC48D2C 5 2 FC MC62D2C 0 HC18A2A 0 0 HC30A2A 0 HC36B2A 3 4 HC42C2C 12 4 0 AHP18B2A 0 0 AHP24B2A 0 AHP30B2A 3 4 AHP36C2A 12 4 AHP42C2C 0 AHP SHP60D2C 0 FC MC PC UC18A3X 41 0 52 0 FC MC PC UC18B3X 41 0 52 0 FC MC PC UC24A3X 52 2 FC MC PC UC24B3X 52 2 FC MC PC32A3X 61 3 65 4 FC ...

Page 4: ...pproved orifice shipped with outdoor unit 3 Systems matched with furnace or air handlers not equipped with blower off delays may require blower Time Delay Kit 2FD06700224 4 PC coils cannot be used in downflow or horizontal applications FC coils cannot be used in horizontal applications Additional R 22 Charge Orifice Size for Various Matched Systems Continued Outdoor Unit GCGD12 S21S2 GCGD18 S21S2 ...

Page 5: ...18 17 650 18 0 12 6 13 00 11 00 AHP24 17 650 18 0 12 6 13 00 11 00 F4FP024 18 600 18 0 12 6 1300 11 00 GCGD24S21S2 AHP30 17 795 24 0 17 3 13 00 11 00 F4FP036 21 5 860 24 0 17 3 13 00 11 00 GCGD30S21S2 AHP30 17 1015 29 0 21 2 13 00 11 00 AHP36 21 1015 29 0 21 2 13 00 11 00 F4FP040 21 5 1000 29 0 21 2 13 00 11 00 GCGD36S21S2 AHP36 21 1235 35 0 24 4 13 00 11 00 F5FP048 24 1235 35 0 24 4 13 00 11 00 G...

Page 6: ...00 24 0 17 2 13 00 11 00 600 1000 14 17 21 UC36 800 24 0 17 2 13 00 11 00 GCGD30S21S2 800 1200 14 FC MC PC32 1000 29 0 21 2 13 00 11 00 800 1200 17 21 FC MC PC35 1000 29 0 21 2 13 00 11 00 800 1200 14 FC MC PC37 1000 29 0 21 2 13 00 11 00 800 1200 17 21 FC MC PC43 1000 29 0 21 2 13 00 11 00 800 1200 17 HC36 1000 29 0 21 2 13 00 11 00 800 1200 21 HC42 1000 29 0 21 2 13 00 11 00 GCGD36S21S2 1000 140...

Page 7: ... 10 95 OD Temp 40 68 6 17 53 1 07 15 03 1 29 11 98 1 57 45 76 1 18 63 1 07 17 25 1 30 14 07 1 59 50 84 1 19 80 1 08 19 61 1 31 16 30 1 61 GCGD24S21S2 SH 10 SC 12 95 OD Temp 40 68 6 22 88 1 42 19 07 1 70 13 99 2 02 45 76 1 24 93 1 44 22 25 1 72 17 25 2 07 50 84 1 27 12 1 47 25 63 1 75 20 72 2 12 GCGD30S21S2 SH 12 SC 10 95 OD Temp 40 68 6 28 77 1 75 23 85 2 01 17 06 2 21 45 76 1 30 28 1 80 26 56 2 0...

Page 8: ...NIMUM 18 SERVICE ACCESS CLEARANCE ON ONE SIDE 60 OVERHEAD CLEARANCE 6 CLEARANCE AROUND PERIMETER NOTE ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE NEC AND OR LOCAL CODES POWER WIRING 208 230 1 60 CONTACTOR TERMINALS COIL GND LUG C Y R G W Y R G W POWER WIRING CONTROL WIRING FACTORY WIRING 24 VOLT CONTROL WIRING MINIMUM 18 GA WIRE NEC CLASS 2 FURNACE OR AIR HANDLER TERMINAL BLOCK ROOM TH...

Page 9: ...7 0 7 0 7 0 7 0 7 0 7 85 T C 10 9 11 6 11 4 12 6 13 5 11 4 12 1 11 7 12 8 13 6 11 9 12 6 11 9 13 0 13 7 S C 10 7 10 6 9 0 9 0 7 1 11 2 11 3 9 6 9 6 7 5 11 7 12 1 10 3 10 1 7 8 KW 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 95 T C 10 7 11 5 11 1 12 3 13 2 11 2 12 0 11 3 12 6 13 3 11 7 12 4 11 6 12 8 13 4 S C 10 5 10 8 9 0 9 0 7 1 11 0 11 5 9 7 9 7 7 5 11 5 12 2 10 4 10 4 7 9 KW 0 9 ...

Page 10: ...7 8 16 9 18 1 18 4 S C 14 3 13 5 11 2 11 0 8 5 15 5 15 2 12 8 12 3 9 3 16 6 16 9 14 4 13 6 10 2 KW 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 95 T C 13 9 15 7 15 4 16 8 17 9 15 3 16 6 15 9 17 4 18 2 16 7 17 5 16 5 18 0 18 5 S C 13 8 13 5 11 1 10 8 8 5 15 2 15 4 12 9 12 4 9 5 16 5 17 3 14 7 14 0 10 5 KW 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 105 T C 13 2 14 6 1...

Page 11: ...0 21 4 23 9 25 7 21 4 23 3 22 4 24 7 26 1 23 2 24 7 23 3 25 5 26 5 S C 19 5 18 3 15 3 15 3 12 0 21 2 21 2 17 5 17 3 13 1 22 9 24 0 19 6 19 4 14 2 KW 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 105 T C 18 8 21 0 20 4 23 2 25 5 20 8 22 5 21 4 24 2 26 0 22 8 24 1 22 5 25 2 26 4 S C 18 6 18 0 14 9 15 1 11 9 20 6 21 0 17 3 17 3 13 2 22 6 24 0 19 7 19 6 14 5 KW 1 7 1 7 1 7 1 7 1 8 1 7 1 ...

Page 12: ...1 23 3 19 4 19 2 14 9 25 8 25 4 21 4 20 9 16 0 27 4 27 5 23 3 22 7 17 1 KW 1 9 1 9 1 9 2 0 2 0 1 9 1 9 1 9 2 0 2 0 2 0 2 0 1 9 2 0 2 0 95 T C 23 0 24 9 24 4 28 0 29 8 25 7 26 3 25 3 28 4 29 9 28 4 27 7 26 1 28 7 30 0 S C 22 6 22 8 18 9 19 3 15 0 24 6 25 1 21 3 21 4 16 3 26 6 27 5 23 7 23 5 17 7 KW 2 1 2 1 2 1 2 1 2 2 2 1 2 1 2 1 2 1 2 2 2 1 2 1 2 1 2 1 2 2 105 T C 21 5 23 1 22 1 25 6 27 7 24 1 24 ...

Page 13: ...37 8 36 6 33 7 37 0 36 8 S C 29 6 28 6 23 2 22 8 17 1 31 9 31 2 25 3 24 8 17 9 34 2 33 8 27 3 26 8 18 7 KW 2 3 2 3 2 3 2 4 2 5 2 4 2 4 2 4 2 4 2 5 2 4 2 4 2 4 2 4 2 5 95 T C 29 7 30 9 29 4 33 1 34 5 33 4 33 2 30 8 34 4 35 1 37 2 35 6 32 3 35 8 35 6 S C 27 9 28 2 22 8 22 5 16 6 30 6 30 9 25 2 24 8 17 7 33 3 33 7 27 6 27 1 18 7 KW 2 5 2 5 2 5 2 6 2 7 2 5 2 5 2 5 2 6 2 7 2 6 2 6 2 5 2 6 2 7 105 T C 2...

Page 14: ... 9 42 0 39 5 44 1 44 9 S C 35 4 34 1 27 9 27 8 20 8 36 8 36 3 29 8 29 5 21 6 38 2 38 5 31 7 31 2 22 4 KW 2 7 2 7 2 7 2 7 2 8 2 7 2 7 2 7 2 8 2 8 2 7 2 7 2 7 2 8 2 8 95 T C 35 0 37 2 35 8 40 9 42 7 37 4 39 0 36 8 42 0 43 3 39 8 40 7 37 8 43 1 43 8 S C 33 9 33 8 27 4 27 7 20 7 35 5 36 0 29 6 29 8 21 6 37 1 38 2 31 8 31 8 22 6 KW 2 9 2 9 2 9 3 0 3 1 2 9 2 9 2 9 3 0 3 1 3 0 3 0 3 0 3 0 3 1 105 T C 33 ...

Page 15: ...1 5 46 6 47 8 45 9 45 4 42 4 47 6 48 3 S C 39 9 38 8 31 7 31 0 23 1 41 5 41 1 33 7 32 9 24 1 43 1 43 4 35 6 34 8 25 1 KW 3 0 3 0 3 0 3 1 3 1 3 0 3 0 3 0 3 1 3 1 3 0 3 0 3 0 3 1 3 2 95 T C 40 5 39 8 37 6 43 5 46 1 42 1 41 5 38 7 44 8 46 7 43 7 43 1 39 7 46 2 47 2 S C 37 5 37 5 30 7 30 7 22 9 39 3 39 8 32 8 33 0 24 0 41 0 42 1 34 9 35 4 25 1 KW 3 2 3 2 3 2 3 3 3 4 3 2 3 2 3 2 3 3 3 4 3 3 3 3 3 3 3 4...

Page 16: ...2 43 0 30 0 55 5 56 2 46 7 45 3 31 2 KW 3 3 3 3 3 3 3 4 3 5 3 4 3 4 3 4 3 4 3 5 3 4 3 4 3 4 3 4 3 5 85 T C 53 3 54 7 52 1 58 0 58 1 55 5 56 6 53 1 59 0 57 3 57 7 58 4 54 2 60 1 56 6 S C 50 3 49 4 40 6 40 1 28 4 52 0 51 9 43 2 42 6 29 6 53 7 54 4 45 8 45 1 30 8 KW 3 7 3 7 3 7 3 8 3 9 3 8 3 8 3 7 3 8 3 9 3 8 3 8 3 8 3 8 3 9 95 T C 51 3 52 7 49 6 56 0 56 7 53 7 54 8 50 6 56 9 54 6 56 1 56 9 51 6 57 8...

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