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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
to the black wire. See Figure 17. The furnace will not
operate unless the polarity and ground are properly
connected.
• If replacing any of the original wires supplied with
the furnace, the replacement wire must be copper
wiring and have a temperature rating of at least
105°F (40° C). For electrical specifi cations, refer to
the furnace nameplate or Table 2.
Furnace
Cabinet
Input
Width
(Btuh)
(in.)
60,000
14
80,000
17
100,000
17
100,000
120,000
140,000
24
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)
Nominal
Maximum
Electrical
Operating
Supply
Voltage
¼
115-60-1
½
115-60-1
½
115-60-1
21
115-60-1
21
115-60-1
½
115-60-1
2 - wire - Heating
140 ft.
225 ft.
Table 2. Wire Length & Voltage Specifi cations
Field Supplied
Disconnect w/in
Panel
Sight of Furnace
Black
White
Ground
Field Line Voltage Wiring
Factory Line Voltage Wiring
Figure 14. Line Voltage Field Wiring
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!
Thermostat / Low Voltage Connections
• The furnace is designed to be controleed by a 24 VAC
thermostat. The thermostat's wiring must comply with
the current provisions of the NEC (ANSI/NFPA 70) and
with applicable local codes having jurisdiction.
• NORDYNE no longer supports twinning of two stage
furnaces. Please contact your furnace distributor for
details.
Minimum
Maximum
Operating
Furnace
Voltage
Amperes
127
103
127
103
127
103
127
103
127
103
127
103
Recommended Thermostat Wire Length
55 ft.
90 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:
Minimum
Fuse or Circuit
Wire
Gauge
Breaker Amps
7.9
14
7.9
14
7.9
14
10.4
14
10.4
14
13.4
14
4 or 5 wire - Cooling
25 ft.
45 ft.
70 ft.
110 ft.
Black
White
Ground
Maximum
*
15
15
15
20
20
30
19
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