Table of Contents
Advertisement
IMPORTANT NOTES:
• An electrical disconnect must be installed readily
accessible from and located within sight of the
furnace. See
Figure 21 (page 25)
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. The furnace will not operate unless
the polarity and ground are properly connected as
shown in
Figure
21.
• 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 specifications, refer to
the furnace nameplate or
Furnace
Cabinet
Input
Width
(Btuh)
(in.)
60,000
17 ½
80,000
21
100,000
21
120,000
24 ½
Thermostat Wire Gauge
24
22
20
18
*
Time-delay fuses or circuit breakers are required.
Black (Hot)
White (Neutral)
Green or Bare
(Ground)
Field Line Voltage Wiring
Factory Line Voltage Wiring
or the wiring
Table
5.
Nominal
Maximum
Electrical
Operating
Supply
Voltage
115-60-1
115-60-1
115-60-1
115-60-1
2 - wire - Heating
55 ft.
90 ft.
140 ft.
225 ft.
Table 5. Wire Length & Voltage Specifications
Field Supplied
Field Supplied
Fused Service
Disconnect w/in
Panel
Sight of Furnace
Black
White
Ground
Figure 21. Line Voltage Field Wiring
Grounding
WARNING:
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 controlled 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.
• The thermostat must be installed according to the
instructions supplied by the thermostat manufacturer.
Minimum
Operating
Voltage
127
103
127
103
127
103
127
103
Recommended Thermostat Wire Length
Junction Box (may be int. or ext. to the furnace). These
connections can be made in the field supplied disconnect at
the furnace. NOTE: Connections made within the furnace
burner compartment do not require a junction box.
Black
White
Ground
Field Supplied
Panel Connector
Maximum
Maximum
Furnace
Fuse or Circuit
Amperes
Breaker Amps
7.0
15
9.4
15
9.4
15
12.5
15
4 or 5 wire - Cooling
25 ft.
45 ft.
70 ft.
110 ft.
Black
White
Ground
*
25
Advertisement
Table of Contents
