571921-UTG-A-0410
2 Johnson Controls Unitary Products
All dimensions are in inches. They are subject to change with-
out notice. Certified dimensions will be provided upon request.
Physical and Electrical Data
MODEL
GHGD18
S41S3
GHGD24
S41S4
GHGD30
S41S4
GHGD36
S41S4
GHGD42
S41S4
GHGD48
S41S4
GHGD60
S41S4
Unit Supply Voltage 208-230V, 1 60Hz
Normal Voltage Range
1
187 to 252
Minimum Circuit Ampacity 11.9 11.2 14.1 19.7 20.9 25.6 34.9
Max. Overcurrent Device Amps
2
20 15 20 30 35 45 60
Min. Overcurrent Device Amps
3
15 15 15 20 25 30 35
Compressor Type Scroll Recip Recip Recip Recip Recip Scroll
Compressor Amps
Rated Load 9.0 8.3 10.6 14.7 15.7 19.4 26.9
Locked Rotor 48.0 43.0 54.0 74.0 88.0 88.0 135.0
Crankcase Heater No Yes Yes Yes Yes Yes No
Fan Motor Amps Rated Load 0.70 0.80 0.80 1.3 1.3 1.3 1.3
Fan Diameter Inches 24 24 24 24 24 24 24
Fan Motor
Rated HP 1/10 1/8 1/8 1/4 1/4 1/4 1/4
Nominal RPM 825 1075 1075 850 850 850 850
Nominal CFM 2000 2900 3000 3800 3800 3600 3600
Coil
Face Area Sq. Ft. 15.7 18.3 21.0 23.6 23.6 23.6 23.6
Rows Deep 1 1 1 1 1 2 2
Fin / Inches 22 22 22 22 22 18 18
Liquid Line Set OD (Field Installed) 3/8 3/8 3/8 3/8 3/8 3/8 3/8
Vapor Line Set OD (Field Installed) 3/4 3/4 3/4 3/4 7/8 7/8 7/8
Unit Charge (Lbs. - Oz.)
4
6 - 6 9 - 6 9 - 0 10 - 0 9 - 10 14 - 12 13 - 13
Charge Per Foot, Oz. 0.62 0.62 0.62 0.62 0.67 0.67 0.67
Operating Weight Lbs. 172 194 206 218 218 285 284
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.
Unit
Model
Dimensions
(Inches)
Refrigerant Connection
Service Valve Size
A
1
1. Including Fan Guard.
B C Liquid Vapor
18 28
34 34
3/8”
3/4”
24 32 34 34
30 36 34 34
36 40 34 34
42 40 34 34
7/8”48 40 34 34
60 40 34 34
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