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VOLTS—
FURNACE
HERTZ—
SIZE
PHASE
024040
115-60-1
036040
115-60-1
024060
115-60-1
036060
115-60-1
048060
115-60-1
036080
115-60-1
048080
115-60-1
060080
115-60-1
048100
115-60-1
060100
115-60-1
060120
115-60-1
060140
115-60-1
* Permissible limits of voltage range at which unit will operate satisfactorily.
† Unit ampacity = 125 percent of largest operating component's full load amps plus 100 percent of all other potential operating components' (EAC, humidifier, etc.) full load
amps.
‡ Length shown is a measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
** Time-delay type is recommended.
A. 115–v Wiring
Before proceeding with electrical connections, make certain that
voltage, frequency, and phase correspond to that specified on
furnace rating plate. Also, check to be sure that service provided
by power supply is sufficient to handle load imposed by this
equipment. Refer to rating plate or Table 6 for equipment electrical
specifications.
→
The furnace must be electrically grounded in accordance with local
codes; or in the absence of local codes, with the National Electric
Code ANSI/NFPA 70 and/or the Canadian Electric Code, CSA
C22.1, Part I, if an external electrical source is utilized.
Use a separate, branch electrical circuit containing a properly sized
fuse or circuit breaker for this furnace. See Table 6 for wire size
and fuse specifications. A disconnecting means must be located
within sight from and readily accessible to furnace.
NOTE: Proper polarity and proper grounding must be maintained
for 115-v wiring. If polarity is incorrect, control LED status
indicator will flash rapidly and furnace will NOT operate.
WARNING: FIRE HAZARD
Failure to follow this warning could result in serious
injury, death, or property damage.
Do not connect aluminum wire between disconnect
switch and furnace. Use only copper wire. (See Fig. 32.)
WARNING: ELECTRICAL SHOCK AND FIRE
HAZARD
Failure to follow this warning could result in serious
injury, death, or property damage.
The cabinet MUST have an uninterrupted or unbroken
ground according to NEC ANSI/NFPA 70-2002 and
Canadian Electrical Code CSA C22.1 or local codes to
minimize personal injury if an electrical fault should
occur. This may consist of electrical wire or conduit
approved for electrical ground when installed in accor-
dance with existing electrical codes. Do not use gas
piping as an electrical ground.
→
FACTORY INSTALLED J-BOX LOCATION
Install electrical entry hole filler plugs (factory-supplied in loose
parts bag) in unused power entry holes. (See Fig. 33.)
J-BOX RELOCATION
1. Remove 2 screws holding auxiliary J-box. (See Fig. 34.)
TABLE 6—ELECTRICAL DATA
OPERATING
MAX
VOLTAGE RANGE
UNIT
AMPS
Max*
Min*
127
104
6.1
127
104
7.3
127
104
6.1
127
104
7.1
127
104
9.5
127
104
7.6
127
104
10.0
127
104
14.1
127
104
10.2
127
104
14.8
127
104
14.6
127
104
14.3
—26—
MIN
UNIT
WIRE
AMPACITY†
SIZE
8.4
14
10.0
14
8.4
14
9.8
14
12.8
14
10.4
14
13.4
14
18.4
12
13.5
14
19.3
12
19.1
12
18.8
12
ELECTRIC
DISCONNECT
SWITCH
Fig. 32—Disconnect Switch and Furnace
POWER ENTRY HOLE
FILLER PLUG (FACTORY-
SUPPLIED LOOSE PARTS BAG)
→ Fig. 33—Factory Installed J-Box Location
2. Rotate J-box 180° and attach box to left side, using holes
provided.
→
3. Install electrical entry hole filler plugs (factory-supplied
loose parts Bag) in unused power entry holes. (See Fig. 34.)
WARNING: ELECTRICAL SHOCK AND FIRE
HAZARD
Failure to follow this warning could result in serious
injury, death, or property damage.
If manual disconnect switch is to be mounted on furnace,
select a location where a drill or fastener will not contact
electrical or gas components.
B. 24–v Wiring
Connect 24-v thermostat leads to 24-v terminal block on furnace
control. For proper cooling operation, Y wire from thermostat
MUST be connected to Y/Y2 terminal on furnace control, as
MAX WIRE
MAX FUSE
LENGTH
OR CKT BKR
(FT)‡
AMPS**
44
15
37
15
44
15
38
15
29
15
36
15
28
15
31
20
27
15
30
20
30
20
30
20
COPPER
WIRE ONLY
ALUMINUM
WIRE
A93033
FACTORY
INSTALLED
LOCATION
UNUSED 7/8-IN.
DIAMETER POWER
ENTRY HOLES
A05113
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