29
ELECTRICAL INFORMATION
Furnace
Model
Number
*SA/*SK
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**
045(†)-23A
45,000
14
¼
115-60-1
127
103
6.3
14
15
054(†)-23A
54,000
14
¼
115-60-1
127
103
6.3
14
15
072(†)-24B
72,000
17
½
115-60-1
127
103
9.7
14
20
072(†)-35C
72,000
21
115-60-1
127
103
9.0
14
15
090(†)-24B
90,000
17
½
115-60-1
127
103
9.7
14
20
090(†)-35C
90,000
21
115-60-1
127
103
9.0
14
15
108(†)-35C
108,000
21
115-60-1
127
103
9.0
14
15
126(†)-45D
126,000
24
½
115-60-1
127
103
15.2
12
30
NOTES:
(†) can be “C” or “N”
** 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 4. 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 5. Control Board Fault Conditions
Summary of Contents for 045C-23ASA
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