33
ELECTRICAL INFORMATION
Furnace
Model Number
*SC/*SL
Furnace
Input
(Btuh)
Cabinet
Width
(in.)
Nominal
Electrical
Supply
Maximum
Operating
Voltage
Minimum
Operating
Voltage
Maximum
Furnace
Amperes
Minimum
Wire
Gauge
Maximum
Fuse or Circuit
Breaker Amps**
038D-23A 38,000
14
¼
115-60-1 127 103 6.6 14 15
054D-24B 54,000
17
½
115-60-1 127 103 10.0 14 20
072D-24B 72,000
17
½
115-60-1 127 103 10.0 14 20
072D-35C 72,000 21 115-60-1 127 103 9.3 14 15
090D-35C 90,000 21 115-60-1 127 103 15.6 14 30
108D-45D 108,000
24
½
115-60-1 127 103 15.6 14 30
120D-45D 120,000
24
½
115-60-1 127 103 15.6 12 30
** Time-delay fuses or HACR-type circuit breakers are required.
Thermostat Wire Gauge
Recommended Thermostat Wire Length
2 - wire
(Heating)
4 or 5 wire
(Cooling)
24 55 ft. 25 ft.
22 90 ft. 45 ft.
20 140 ft. 70 ft.
18 225 ft. 110 ft.
Table 6. Wire Length and Voltage Specifi cations
Diagnostic Description Green LED Red LED
Control Fault (No Power) Off Off
L1/Neutral Polarity Fault Flash Flash
1 Hour Lockout Alternating Flash
Normal Operation On On
Pressure Switch Closed Fault On Flash
Pressure Switch Open Fault Flash On
Open Limit Switch Fault Flash Off
Diagnostic Description Yellow LED
Low Flame Sensor Signal Continuous Flash
Flame Present On
Table 7. Control Board Fault Conditions
To Next Page
Loading...
Need help?
General