Line Voltage Wiring; Grounding - Nordyne *SA Upfl ow / Horizontal Installation Instructions Manual

Line Voltage Wiring

It is recommended that the line voltage (115 VAC) to
the furnace be supplied from a dedicated branch circuit
containing the correct fuse or circuit breaker for the
furnace (Table 2).
IMPORTANT NOTES:
An electrical disconnect must be installed readily
accessible from and located within sight of the furnace.
See Figure 14 or the wiring diagram label inside of
the control door. Any other wiring methods must be
acceptable to authority having jurisdiction.
Proper line voltage polarity must be maintained in
order for the control system to operate correctly.
Verify the incoming neutral line is connected to the
white wire and the incoming "hot" line is connected
Furnace Furnace
Model Input
*SA/*SK (Btuh)
045C-23A 45,000
054C-23A 54,000
072C-24B 72,000
072C-35C 72,000
090C-24B 90,000
090C-35C 90,000
108C-35C 108,000
126C-45D 126,000
Thermostat Wire Gauge
24
22
20
18
*
Time-delay fuses or circuit breakers are required.
Field Supplied
Fused Service
Black (Hot)
White (Neutral)
Green or Bare
(Ground)
Field Line Voltage Wiring
Factory Line Voltage Wiring
Cabinet Nominal
Width Electrical
(in.) Supply
14 1/4 115-60-1
14 1/4 115-60-1
17 1/2 115-60-1
21 115-60-1
17 1/2 115-60-1
21 115-60-1
21 115-60-1
24 1/2 115-60-1
2 - wire - Heating
Table 2. Wire Length & Voltage Specifi cations
Field Supplied
Disconnect w/in
Panel
Sight of Furnace
Black
White
Ground
Figure 14. Line Voltage Field Wiring
to the black wire. The furnace will not operate unless
the polarity and ground are properly connected as
shown in Figure 14.

Grounding

To minimize personal injury, the furnace cabinet
must have an uninterrupted or unbroken
electrical ground. The controls used in this
furnace require an earth ground to operate
properly. Acceptable methods include electrical
wire or conduit approved for ground service.
Do not use gas piping as an electrical ground!
Maximum Minimum
Operating Operating
Voltage Voltage
127 103
127 103
127 103
127 103
127 103
127 103
127 103
127 103
Recommended Thermostat Wire Length
55 ft.
90 ft.
140 ft.
225 ft.
Junction Box (may be int. or ext.
to the furnace). These connections
can be made in the field supplied
disconnect at the furnace.
Black
White
Ground
Field Supplied
Panel Connector
WARNING:
Maximum Minimum
Fuse or Circuit
Furnace Wire
Amperes Gauge
Breaker Amps
6.3 14
6.3 14
9.7 14
9.0 14
9.7 14
9.0 14
9.0 14
15.2 12
4 or 5 wire - Cooling
25 ft.
45 ft.
70 ft.
110 ft.
Black
White
Ground
Maximum
*
15
15
20
15
20
15
15
30
19