Johnson Controls GCGD12 Quick start guide

SPLIT-SYSTEM
A
IR CONDITIONERS
13 SEER – R-22
MODELS:
GCGD12 THRU 60
(1 THRU 5 NOMINAL TONS, 1 PHASE)
Due to continuous product improvement, specifications
are subject to change without notice.
V
isit us on the web at www.york.com
A
dditional rating information can be found at
w
ww.ahridirectory.org
LISTED
ISO 9001
Certified Quality
Management System
TECHNICAL
GUIDE
TECHNICAL
GUIDE
400038-UTG-B-0708
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
DESCRIPTION
The 13 SEER Series condensing unit is the outdoor part of a
versatile system of air conditioning. It is designed to be cus-
tom-matched with one of UPG’s complete line of evaporator
sections, with each serving a specific function. Matching Air
Handlers are available for upflow, downflow, or horizontal
applications to provide a complete system. Electric Heaters
are available, if required. Add-On coils are available for use
with upflow, downflow, or horizontal furnaces and air han-
dlers.
WARRANTY
Single Phase Units:
5-year limited parts warranty.
5-year limited compressor warranty.
FEATURES
•QUALITY CONDENSER COILS - The coil is constructed
of aluminum microchannel tubing and enhanced aluminum
fins for increased efficiency and corrosion protection.
•PROTECTED COMPRESSOR - The compressor is inter-
nally protected against high pressure and temperature.
This is accomplished by the simultaneous operation of
high pressure relief valve and a temperature sensor which
protects the compressor if undesirable operating condi-
tions 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 power and control wiring connec-
tions. Available in sweat connect models only. The unit
contains enough refrigerant for matching indoor coils and
15 feet of interconnecting piping. The small base dimen-
sion means less space is required on the ground or roof.
•TOP DISCHARGE - The warm air from the top mounted
fan is blown up away from the structure and any landscap-
ing. This allows compact location on multi-unit applica-
tions.
•LOW OPERATING SOUND LEVEL - The upward air flow
carries the normal operating noise away from the living
area. The rigid top panel effectively isolates any motor
sound. Isolator mounted compressor and the rippled fins
of the condenser coil muffle the normal fan motor and
compressor operating sounds.
•LOW MAINTENANCE - Long life permanently lubricated
motor-bearings need no annual servicing.
•EASY SERVICE ACCESS - Fully exposed refrigerant con-
nections, and a single panel covering the electrical con-
trols make for easy servicing of the unit.
•SECURED SERVICE VALVES - Secured re-usable ser-
vice valves are provided on both the liquid and vapor
sweat connections for ease of evacuating and charging.
•U.L. and C.U.L. listed - approved for outdoor application.
Certified in accordance with the Unitary Small Equipment cer-
tification program, which is based on ARI Standard 210/240.

400038-UTG-B-0708
2Johnson 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, 1φ, 60Hz
Normal Voltage Range 1187 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 215 15 15 20 30 30 35 50
Min. Overcurrent Device Amps 315 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 RowsDeep 11111111
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.) 43 - 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
CDIMENSIONS
Unit
Model Dimensions (Inches) Refrigerant Connection Service Valve Size
A1
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”

400038-UTG-B-0708
Johnson Controls Unitary Products 3
Additional R-22 Charge / Orifice Size for Various Matched Systems
Outdoor Unit GCGD12
S21S2 GCGD18 S21S2 GCGD24 S21S2 GCGD30 S21S2 GCGD36 S21S2 GCGD42 S21S2 GCGD48 S21S2 GCGD60 S21S2
Required Orifice or TXV 1,2 0.041 / 2A 0.052 / 2A 0.059 / 0.061 / 2A 0.065 / 2A 0.073 / 2A 0.081 / 2C 0.084 / 2C 0.096 / 2C
Factory R-22 Charge, lbs-oz 3 - 2 3 - 0 3 - 13 3 - 7 3 - 15 4 - 2 4 - 5 5 - 4
Indoor Coil3,4 Additional Charge, Oz
FC/MC/PC/UC18A2A 00 – –––––
FC/MC/PC/UC18B2A 00 – –––––
FC/MC/PC/UC24A2A –0 – –––––
FC/MC/PC/UC24B2A –0 – –––––
FC/MC/PC32A2A –– +3 +4––––
FC/MC/PC35B2A –– +3 +4––––
FC/MC/PC35C2A –– +3 +4––––
FC/MC/PC/UC36A2A –– 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 00 – –––––
HC30A2A –– 0 –––––
HC36B2A –– +3 +4––––
HC42C2C – – – +12 +4 0 – –
AHP18B2A 00 – –––––
AHP24B2A –0 – –––––
AHP30B2A –– +3 +4––––
AHP36C2A – – – +12 +4 – – –
AHP42C2C –– – ––0––
AHP/SHP60D2C –– – –––0–
FC/MC/PC/UC18A3X41+052+0 – –––––
FC/MC/PC/UC18B3X41+052+0 – –––––
FC/MC/PC/UC24A3X –52+2 – –––––
FC/MC/PC/UC24B3X –52+2 – –––––
FC/MC/PC32A3X –– 61+365+4––––
FC/MC/PC35B3X –– 61+365+4––––
FC/MC/PC35C3X –– 61+365+4––––
FC/MC/PC/UC36A3X –– 59+0 –––––
FC/MC/PC/UC36B3X –– 59+0 –––––
FC/MC/PC/UC36C3X –– 59+0 –––––
FC/MC/PC37A3X – – 61 + 7 65 + 12 73 + 4 – – –
FC/MC/PC43B3X – – 61 + 7 65 + 12 73 + 4 81 + 0 – –
FC/MC/PC43C3X – – 61 + 7 65 + 12 73 + 4 81 + 0 – –
FC/MC/PC/UC48C3X – – – – 73 + 4 81 + 5 84 + 2 –
FC/MC/PC/UC48D3X – – – – 73 + 4 81 + 5 84 + 2 –
FC/MC62D3X –– – ––––96+0
HC18A3X 41+052+0 – –––––
HC30A3X –– 59+0 –––––
HC36B3X –– 61+365+4––––
HC42C3X – – 61 + 7 65 + 12 73 + 4 81 + 0 – –
For Notes See Page 4.

400038-UTG-B-0708
4Johnson Controls Unitary Products
PROCEDURES:
1. Unit factory charge listed on the unit nameplate includes refrigerant for the condenser, the smallest evaporator and 15 feet of inter-
connecting line tubing.
2. Verify the TXV or orifice and additional charge required for specific evaporator coil in the system using the above table.
3. Additional charge for the amount of interconnecting line tubing greater than 15 feet at the rate specified in Physical and Electrical
Data Table.
4. For TXV match charge weight needs to be weighed in for specififc coil match and lineset length.
5. Permanently mark the unit nameplate with the total system charge. Total System Charge = Base Charge (as shipped) + adder for
evaporator + adder for line set.
AHP18B3X 41+052+0 – –––––
AHP24B3X –52+0 – –––––
AHP30B3X –– 61+365+4––––
AHP36C3X – – – – 73 + 4 – – –
AHP42C3X – – – – 73 + 4 81 + 0 – –
AHP/SHP60D3X – – – – – – 84 + 0 –
F4FP024 –52+0 – –––––
–2A+0 – –––––
F4FP036 –– 61+1 –––––
––2A+2–––––
F4FP040 –– – 65+0––––
–– –2A+0––––
F5FP048 – – – – 73 + 0 81 + 5 84 + 2 –
– – – – 2A + 0 2C + 5 2C + 2 –
F5FP060 –– – –––84+0–
–– – –––2C+0–
FOOTNOTES:
1. For applications requiring a TXV use 1TVM series kit.
2. Approved 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 GCGD24 S21S2 GCGD30 S21S2 GCGD36 S21S2 GCGD42 S21S2 GCGD48 S21S2 GCGD60 S21S2
Required Orifice or TXV 1,2 0.041 / 2A 0.052 / 2A 0.059 / 0.061 / 2A 0.065 / 2A 0.073 / 2A 0.081 / 2C 0.084 / 2C 0.096 / 2C
Factory R-22 Charge, lbs-oz 3 - 2 3 - 0 3 - 13 3 - 7 3 - 15 4 - 2 4 - 5 5 - 4
Indoor Coil3,4 Additional Charge, Oz
See Cautionbelow
See Cautionbelow
See Cautionbelow
See Cautionbelow
See Cautionbelow
Models 12-48 require start kits for TXV matches. Models with “H” on the end of the model number have factory installed start kits.
For models without an “H” refer to tech guide for kit number reference.
F*FP Air Handlers come with a factory installed R-22 TXV. Please note that some models may take a different TXV then what is factory
installed. The proper TXV must be installed for system reliability and performance. Also note, TXV must be removed for orifice match.

400038-UTG-B-0708
Johnson Controls Unitary Products 5
— = Not applicable.
COOLING CAPACITY - With Air Handler Coils
UNIT
MODEL
AIR HANDLER COIL
MODEL1
COOLING
MODEL W RATED
CFM NET MBH SEER EER
TOTAL SENS.
13 SEER AC WITH MA
GCGD18S21S2 MA08B 17 FC/MC18B 600 18.0 12.6 13.00 11.00
MA08B 17 FC/MC24B 600 18.0 12.6 13.00 11.00
GCGD24S21S2 MA08B 17 FC/MC35B 800 24.0 17.2 13.00 11.00 MA08B 17 FC/MC36B 800 24.0 17.2 13.00 11.00
MA08B 17 FC/MC43B 800 24.0 17.2 13.00 11.00
GCGD30S21S2 MA12B 17 FC/MC35B 1000 29.0 21.2 13.00 11.00
MA12B 17 FC/MC43B 1000 29.0 21.2 13.00 11.00
GCGD36S21S2 MA12B 17 FC/MC43B 1200 35.0 24.4 13.00 11.00
MA14D 24 FC/MC48D 1200 35.0 24.4 13.00 11.00
GCGD42S21S2 MA16C 21 FC/MC43C 1400 42.0 29.4 13.00 11.00 MA14D 24 FC/MC48D 1400 42.0 29.4 13.00 11.00
MA16C 21 FC/MC48C 1400 42.0 29.4 13.00 11.00
GCGD48S21S2 MA16C 21 FC/MC48C 1600 46.0 32.6 13.00 11.00
MA20D 24 FC/MC48D 1600 46.0 32.6 13.00 11.00
GCGD60S21S2 MA20D 24 FC/MC62D 1800 54.0 41.5 13.00 11.00
13 SEER AC WITH AHP / SHP / F*FP
GCGD12S21S2 AHP18 17 – 450 12.0 8.9 13.00 11.00
GCGD18S21S2 AHP18 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
GCGD42S21S2 AHP42 21 – 1485 42.0 29.4 13.00 11.00
F5FP048 24 – 1455 42.0 29.4 13.00 11.00
GCGD48S21S2 AHP/SHP60 24 – 1600 46.0 33.0 13.00 11.00
F5FP048 24 – 1690 46.0 33.0 13.00 11.00
F5FP060 24 – 1680 46.0 33.0 13.00 11.00
Rated in accordance with DOE test procedures (Federal Register 12-27-79 and 3-18-88) and ARI Standards 210.
Cooling MBH based on 80°F entering air temperature, 50% RH, and rated air flow.
EER (Energy Efficiency Ratio) is the total cooling output in BTU’s at 95°F outdoor ambient divided by the total electric power in watt-hours at those conditions.
SEER (Seasonal Energy Efficiency Ratio) is the total cooling output in BTU’s during a normal annual usage period for cooling divided by the total electric power
input in watt-hours during the same period.
1. MC coils available with a factory installed horizontal drain pan. See price pages for specific model number.

400038-UTG-B-0708
6Johnson Controls Unitary Products
COOLING CAPACITY - Upflow, Downflow & Horizontal Furnaces and Coils
UNIT MODEL
FURNACE** COIL
MODEL
COOLING
CFM RANGE
(Min.-max.) WRATED CFM NET MBH SEER1EER
TOTAL SENS.
GCGD12S21S2 450 - 750 14,17 FC/MC/PC18 450 12.0 9.1 13.00 11.00 450 - 750 14 HC18 450 12.0 9.1 13.00 11.00
450 - 750 14,17 UC18 450 12.0 9.1 13.00 11.00
GCGD18S21S2
450 - 750 14,17 FC/MC/PC18 600 18.0 12.6 13.00 11.00
450 - 750 14,17 FC/MC/PC24 600 18.0 12.6 13.00 11.00
450 - 750 14 HC18 600 18.0 12.6 13.00 11.00
450 - 750 14,17 UC18 600 18.0 12.6 13.00 11.00
450 - 750 14,17 UC24 600 18.0 12.6 13.00 11.00
GCGD24S21S2
600 - 1000 14 FC/MC/PC32 800 24.0 17.2 13.00 11.00
600 - 1000 17,21 FC/MC/PC35 800 24.0 17.2 13.00 11.00
600 - 1000 14,17,21 FC/MC/PC36 800 24.0 17.2 13.00 11.00
600 - 1000 14 FC/MC/PC37 800 24.0 17.2 13.00 11.00
600 - 1000 17,21 FC/MC/PC43 800 24.0 17.2 13.00 11.00
600 - 1000 14 HC30 800 24.0 17.2 13.00 11.00
600 - 1000 17 HC36 800 24.0 17.2 13.00 11.00
600 - 1000 21 HC42 800 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 - 1400 14 FC/MC/PC37 1200 35.0 24.4 13.00 11.00
1000 - 1400 17,21 FC/MC/PC43 1200 35.0 24.4 13.00 11.00
1000 - 1400 21,24 FC/MC/PC48 1200 35.0 24.4 13.00 11.00
1000 - 1400 21 HC42 1200 35.0 24.4 13.00 11.00
1000 - 1400 21,24 UC48 1200 35.0 24.4 13.00 11.00
GCGD42S21S2
1200 - 1600 17,21 FC/MC/PC43 1400 42.0 29.4 13.00 11.00
1200 - 1600 21,24 FC/MC/PC48 1400 42.0 29.4 13.00 11.00
1200 - 1600 21 HC42 1400 42.0 29.4 13.00 11.00
1200 - 1600 21,24 UC48 1400 42.0 29.4 13.00 11.00
GCGD48S21S2 1400 - 1800 21,24 FC/MC/PC48 1550 46.0 32.6 13.00 11.00
1400 - 1800 21,24 UC48 1550 46.0 32.6 13.00 11.00
GCGD60S21S2 1600 - 2000 24 FC/MC62 2000 55.0 41.0 13.00 11.00
1. Requires a 2FD06700224 Blower Time Delay unless a standard furnace is equipped with one.
** Refer to Quick Selection Chart for specific furnace match-up.

400038-UTG-B-0708
Johnson Controls Unitary Products 7
ACCESSORIES
Refer to Price Manual for specific model numbers.
HARD START KIT - Required when using TXV indoor coil.
Also, provides increased starting torque for areas with low
voltage.
OFF CYCLE TIMER DELAY - Provides a 5-minute off cycle
to prevent rapid recycling of the compressor.
ROOM THERMOSTATS - A wide selection of compatible
thermosets are available to provide optimum performance
and features for any installation.
1H/1C, manual changeover electronic non-programmable
thermostat.
1H/1C, auto/manual changeover, electronic programmable,
deluxe 7-day, thermostat.
1H/1C, auto/manual changeover, electronic programmable.
* For the most current accessory information, refer to the
price book or consult factory.
SOUND POWER RATINGS*
* Rated in accordance with ARI 270-95 Standards.
CONDENSER ONLY DATA
MODEL SUCT. T/P @ COMPR. AIR TEMP ON CONDENSER
75° F 95° F 115° F
Temp. PSIG MBH KW MBH KW MBH KW
GCGD12S21S2
SH 11 / SC 13 @
95 OD Temp
40 68.6 11.81 0.73 8.15 0.85 5.29 1.01
45 76.1 12.65 0.73 10.15 0.86 7.21 1.02
50 84.1 13.55 0.74 12.29 0.87 9.26 1.04
GCGD18S21S2
SH 11 / SC 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 2.07 19.76 2.31
50 84.1 31.89 1.86 29.45 2.13 22.64 2.40
GCGD36S21S2
SH 10 / SC 11 @
95 OD Temp
40 68.6 31.46 2.16 18.41 2.37 13.42 2.78
45 76.1 36.54 2.20 25.84 2.47 18.88 2.85
50 84.1 41.95 2.24 33.77 2.58 24.71 2.91
GCGD42S21S2
SH 10 / SC 9 @
95 OD Temp
40 68.6 40.44 2.46 28.86 2.83 21.78 3.21
45 76.1 45.28 2.52 36.10 2.91 27.55 3.30
50 84.1 50.44 2.59 43.82 3.00 33.70 3.41
GCGD48S21S2
SH 10 / SC 12 @
95 OD Temp
40 68.6 42.04 2.70 26.14 3.03 21.19 3.49
45 76.1 46.86 2.77 35.10 3.16 27.59 3.60
50 84.1 52.00 2.85 44.65 3.30 34.43 3.73
GCGD60S21S2
SH 10 / SC 9 @
95 OD Temp
40 68.6 52.76 3.40 46.38 4.04 36.26 5.08
45 76.1 59.98 3.41 53.35 4.14 42.46 5.15
50 84.1 67.69 3.41 60.79 4.25 49.07 5.22
Model Source 1 Kit numbers
12 S1-2SA06708606
18 S1-2SA06708606
24 S1-2SA06708706
30 S1-2SA06705906
36 S1-2SA06708106
42 S1-2SA06708106
48 S1-2SA06708806 UNIT MODEL (dBA)
12 72
18 75
24 76
30 75
36 76
42 75
48 76
60 78

400038-UTG-B-0708
8Johnson Controls Unitary Products
TYPICAL INSTALLATION
TYPICAL FIELD WIRING
THERMOSTAT
SEAL OPENING(S) WITH
PERMAGUM OR EQUIVALENT
TO INDOOR COIL
TO FURNACE OR
AIR HANDLER
TERMINAL BLOCK
NEC CLASS 2 WIRING
NEC CLASS 1 WIRING
ALL OUTDOOR WIRING
MUST BE WEATHERPROOF. CONTROL
ACCESS
PANEL
WEATHERPROOF
DISCONNECT
SWITCH
MINIMUM 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
CYRGW
YRGW
POWER WIRING
CONTROL WIRING
FACTORY WIRING
24 VOLT CONTROL WIRING
MINIMUM 18 GA. WIRE
(NEC CLASS 2)
FURNACE OR AIR HANDLER TERMINAL BLOCK
ROOM THERMOSTAT
CONDENSING UNIT
ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.
TERMINAL W IS ONLY
REQUIRED ON SYSTEMS
WITH HEAT.
*
*

400038-UTG-B-0708
Johnson Controls Unitary Products 9
Multipliers for determining the performance with other indoor sections.
NOTE: For dry bulb temperatures different than those listed (between 73-87 F), sensible capacity increases by 1060 BTUH per 1000 CFM per degree above the
listed temperature and decreases by 1060 BTUH per 1000 CFM per degree below the listed temperature.
COOLING PERFORMANCE DATA
AIR CONDITIONER MODEL NO. GCGD12S21S2
INDOOR COIL MODEL NO. FC/MC/PC18
CONDENSING
ENTERING AIR
TEMPERATURE
IDCFM 450 600 750
ID DB (°F) 80 80 75 80 80 80 80 75 80 80 80 80 75 80 80
ID WB (°F) 57 62 62 67 72 57 62 62 67 72 57 62 62 67 72
65 T.C. 11.3 11.9 12.1 13.1 14.1 11.7 12.4 12.3 13.2 14.1 12.1 12.9 12.6 13.2 14.1 S.C. 11.1 10.2 9.1 9.0 7.2 11.5 11.0 9.6 9.2 7.4 11.9 11.8 10.0 9.5 7.5
KW 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7
75 T.C. 11.1 11.7 11.7 12.9 13.8 11.6 12.2 12.0 13.0 13.8 12.0 12.7 12.3 13.1 13.9 S.C. 10.9 10.4 9.1 9.0 7.2 11.4 11.2 9.6 9.4 7.4 11.8 11.9 10.1 9.8 7.7
KW 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 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 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9
105 T.C. 10.0 10.9 10.2 11.5 12.5 10.6 11.4 10.5 11.8 12.7 11.1 11.9 10.9 12.0 12.9 S.C. 9.8 10.3 8.6 8.8 6.9 10.4 10.9 9.2 9.5 7.3 11.0 11.5 9.9 10.2 7.8
KW 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
115 T.C. 9.3 10.3 9.3 10.7 11.9 9.9 10.9 9.7 11.0 12.2 10.5 11.4 10.1 11.3 12.4 S.C. 9.2 9.9 8.2 8.6 6.7 9.8 10.3 8.8 9.3 7.2 10.4 10.8 9.4 10.0 7.6
KW 1.1 1.0 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1
125 T.C. 8.6 9.7 8.4 9.9 11.2 9.3 10.3 8.9 10.2 11.6 9.9 10.9 9.4 10.5 11.9 S.C. 8.5 9.4 7.8 8.4 6.5 9.2 9.8 8.4 9.1 7.0 9.8 10.1 8.9 9.8 7.5
KW 1.1 1.1 1.1 1.2 1.2 1.2 1.1 1.1 1.2 1.2 1.2 1.2 1.1 1.2 1.2
NOTE: ALL CAPACITIES INCLUDE INDOOR FAN HEAT AT 1250 BTUH/1000 CFM.
Air Handler Coil T.C. S.C. KW
– HC18 1.00 1.00 1.00
– UC18 1.00 1.00 1.00
AHP18 – 0.98 0.97 0.98

400038-UTG-B-0708
10 Johnson Controls Unitary Products
Multipliers for determining the performance with other indoor sections.
NOTE: For dry bulb temperatures different than those listed (between 73-87 F), sensible capacity increases by 1060 BTUH per 1000 CFM per degree above the
listed temperature and decreases by 1060 BTUH per 1000 CFM per degree below the listed temperature.
COOLING PERFORMANCE DATA
AIR CONDITIONER MODEL NO. GCGD18S21S2
INDOOR COIL MODEL NO. FC/MC/PC18
CONDENSING
ENTERING AIR
TEMPERATURE
IDCFM 450 600 750
ID DB (°F) 80 80 75 80 80 80 80 75 80 80 80 80 75 80 80
ID WB (°F) 57 62 62 67 72 57 62 62 67 72 57 62 62 67 72
65 T.C. 15.4 17.1 16.7 18.1 18.0 16.2 17.6 17.2 18.2 18.0 17.0 18.2 17.6 18.3 18.0 S.C. 15.2 13.4 11.4 11.3 8.6 16.0 14.7 12.6 12.0 9.0 16.8 16.0 13.8 12.7 9.5
KW 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
75 T.C. 14.9 16.6 16.3 17.7 18.0 15.9 17.3 16.8 17.9 18.1 16.9 18.0 17.3 18.2 18.2 S.C. 14.7 13.4 11.3 11.1 8.5 15.7 14.9 12.7 12.1 9.2 16.7 16.4 14.1 13.1 9.8
KW 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1
85 T.C. 14.4 16.1 15.8 17.3 18.0 15.6 17.0 16.3 17.7 18.2 16.8 17.8 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 14.2 15.9 17.2 14.6 15.7 14.9 16.5 17.5 16.0 16.8 15.5 17.1 17.8 S.C. 13.1 13.1 10.6 10.6 8.3 14.4 14.8 12.4 12.3 9.3 15.8 16.4 14.2 13.9 10.4
KW 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
115 T.C. 12.5 13.6 13.1 15.0 16.5 13.9 14.9 13.8 15.6 16.8 15.2 16.2 14.6 16.2 17.2 S.C. 12.4 12.6 10.1 10.3 8.1 13.7 14.1 11.9 12.1 9.2 15.1 15.7 13.7 13.8 10.2
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
125 T.C. 11.8 12.6 12.0 14.2 15.7 13.2 14.1 12.8 14.8 16.1 14.5 15.5 13.6 15.3 16.5 S.C. 11.7 12.2 9.6 10.1 7.9 13.0 13.5 11.5 11.9 9.0 14.4 14.9 13.3 13.8 10.1
KW 1.7 1.7 1.7 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8
NOTE: ALL CAPACITIES INCLUDE INDOOR FAN HEAT AT 1250 BTUH/1000 CFM.
Air Handler Coil T.C. S.C. KW
– FC/MC/PC/UC24 1.00 1.00 1.00
– HC18 1.00 1.00 1.00
– UC18 1.00 1.00 1.00
AHP18 – 1.00 1.00 1.00
AHP24 – 1.00 1.00 1.00
F4FP024 – 1.00 1.00 1.00
MA08B FC/MC18B 1.00 1.00 1.00
MA08B FC/MC24B 1.00 1.00 1.00