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iMPORTANT NOTES:
• An electrical
disconnect
must be installed readily
accessible
from and located
within
sight of the
furnace.
See Figure 23 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.The furnace will not operate unless
the polarity and ground are properly connected
as
shown in Figure 23.
• 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
orTable 5.
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 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.
= The thermostat
must be installed according
to the
instructions supplied by the thermostat manufacturer.
Furnace
Cabinet
input
I
Width
(Btuh)
•
(in.)
60,000
17 1/2
80,000
21
100,000
21
120,000
24 1/2
I
I
Nominal
Maximum
Minimum
Electrical
operating
Operating
Supply
115-60-1
115-60-1
115-60-1
115-60-1
Voltage
127
127
127
127
Voltage
103
103
103
1
o_____._3
aa* mum I M n mum
Furnace
Wire
Amperes
Gauge
7.0
14
9.4
14
9.4
14
12.5
1_____2____4
Maximum
Fuseor Circuit
Breaker
Amps*
15
20
20
25
reLength
Thermostat Wire Gauge
,
i
.
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.
* Time-delay fuses or circuit breakers are required.
Table 5. Wire Length & Voltage Specifications
Field Supplied
Fused Service
Panel
\
=B_ck LH°=t)_
i =c_ 1_.
w_-(-N-_-L_! _.........
Green or Bare
|
Ground
Field Supplied
Disconnect w/in
Sight of Furnace
\
Black
White
......
Field Line Voltage Wiring
__
Factory
Line Voltage Wiring
.....
_ooo_ ....
Ground
White
Junction Box (may be int. or ext.
to the furnace). These connections
can be made in the field supplied
disconnect
at the furnace.
!
Black
-_--_l
Black
Ground
Field Supplied
Panel Connector
Figure 23. Line Voltage Field Wiring
25
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