Lennox LGH300S User Manual


ELECTRICAL DATA 17.5 TON
17.5 TON HIGH EFFICIENCY LGH210H4
1
Voltage - 60hz 208/230V - 3 Ph 460V - 3 Ph 575V - 3 Ph
Compressor 1 Rated Load Amps 15.6 7.8 5.8
Locked Rotor Amps 110 52 
Compressor 2 Rated Load Amps 15.6 7.8 5.8
Locked Rotor Amps 110 52 
Compressor 3 Rated Load Amps  8.2 6.6
Locked Rotor Amps 136 66.1 55.3
Outdoor Fan
Motors (6)
Full Load Amps
(total)
2.4
(14.4)
1.3
(7.8)
1
(6)
Power Exhaust
(2) 0.33 HP
Full Load Amps
(total)
2.4
(4.8)
1.3
(2.6)
1
(2)
Service Outlet 115V GFI (amps) 15 15 20
Indoor Blower
Motor
Horsepower 3 5 7.5 3 5 7.5 3 5 7.5
Full Load Amps 10.6 16.7 24.2 4.8 7.6 11  6.1 
2
Maximum
Overcurrent
Protection
Unit Only 100 100 110 45 45 50 35 35 40
With (2) 0.33 HP
Power Exhaust
100 110 110 45 50 50 35 40 45
3
Minimum
Circuit
Ampacity
Unit Only 81 87   42 46 30 32 36
With (2) 0.33 HP
Power Exhaust
86  101 42 44 48 32 34 38
ELECTRICAL DATA 20 TON
20 TON HIGH EFFICIENCY LGH240H4
1
Voltage - 60hz 208/230V - 3 Ph 460V - 3 Ph 575V - 3 Ph
Compressor 1 Rated Load Amps 13.2 6.3 
Locked Rotor Amps  60 41
Compressor 2 Rated Load Amps 13.2 6.3 
Locked Rotor Amps  60 41
Compressor 3 Rated Load Amps 13.2 6.3 
Locked Rotor Amps  60 41
Compressor 4 Rated Load Amps 13.2 6.3 
Locked Rotor Amps  60 41
Outdoor Fan
Motors (6)
Full Load Amps
(total)
2.4
(14.4)
1.3
(7.8)
1
(6)
Power Exhaust
(2) 0.33 HP
Full Load Amps
(total)
2.4
(4.8)
1.3
(2.6)
1
(2)
Service Outlet 115V GFI (amps) 15 15 20
Indoor Blower
Motor
Horsepower 5 7.5 10 5 7.5 10 5 7.5 10
Full Load Amps 16.7 24.2 30.8 7.6 11 14 6.1  11
2
Maximum
Overcurrent
Protection
Unit Only 100 110 125 50 50 60 35 45 50
With (2) 0.33 HP
Power Exhaust
100 125 125 50 60 60 40 45 50
3
Minimum
Circuit
Ampacity
Unit Only   106 43 47 51 34 37 40
With (2) 0.33 HP
Power Exhaust
 103 111 46 50 54 36  42
NOTE - All units have a minimum Short Circuit Current Rating (SCCR) of 5000 amps.
1
Extremes of operating range are plus and minus 10% of line voltage.
2
HACR type breaker or fuse.
3
Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements.
4
Factory installed circuit breaker not available.

Lennox LGH300S Specifications

General

Brand	Lennox
Model	LGH300S
Category	Air Conditioner
Language	English