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Conversion to LP/propane, sea level, and high
altitude is detailed in the installation instructions
provided with the conversion kit. Approved
conversion kits are listed below.
United States LP/Propane Gas Sea Level and
High Altitude Conversion Kit - P/N 904090
This kit is for LP/propane conversion in the
United States at altitudes between zero and
10,000 ft. above sea level. Follow the installation
instructions supplied with the kit for proper
installation.
Canadian LP/Propane Gas Sea Level and High
Altitude Conversion Kit - P/N 904091
This kit is for LP/propane conversions in Canada
at altitudes between zero and 4500 ft. above sea
level. Follow the installation instructions supplied
with the kit for proper installation.
!
CAUTION:
To avoid electric shock, personal
injury, or death, turn off the electric
power at the disconnect or the main
service panel before making any
electrical connections.
ELECTRICAL WIRING
General
Electrical connections must be made in
accordance with all applicable local codes and
ordinances, and with the current revision of the
National Electric Code (ANSI/NFPA 70).
For Canadian installations the electrical
connections and grounding shall be done in
accordance with the current Canadian Electrical
Code (CSA C22.1, Part 1 and/or local codes).
If any of the original wire as supplied with the
furnace must be replaced, it must be replaced
with wire having a temperature rating of at least
105°C. Refer to the furnace nameplate and
Table 9 for electrical requirements.
Line Voltage Wiring
The line voltage (115 volt) to the furnace must be
supplied from a dedicated branch circuit containing
the correct fuse or circuit breaker for the furnace.
(See Table 9.) An electrical disconnect must be
installed to be readily accessible from and located
within sight of the furnace. (See the Wiring
Diagram label in the furnace and Figure 10.)
!
CAUTION:
Label all wires prior to disconnection
when servicing controls. Wiring errors
can cause improper and dangerous
operation.
Verify proper operation after servicing.
The furnace cabinet must have an uninterrupted,
unbroken ground to minimize injury should an
electrical fault condition occur. The controls
used in this furnace require an earth ground
to operate properly. Acceptable methods for
grounding are electrical wire or conduit approved
for electrical ground service. Do not use gas
piping as an electrical ground.
IMPORTANT NOTE:
Proper line voltage polarity must be
maintained in order for the control system to
operate correctly. Verify that the incoming
neutral line is connected to the white wire
and the incoming “hot” line is connected to
the black wire. These furnaces will not
operate unless the polarity and ground are
properly connected. See Figure 10.
Table 9. Electrical Data
** Time-delay fuses or HACR-type circuit breakers are required.
Thermostat Recommended Thermostat
Wire
Wire Length
Gauge
2-wire 4
or
5-wire
(heating)
(cooling)
24
55 ft.
25 ft.
22
90 ft.
45 ft.
20
140 ft.
70 ft.
18
225 ft.
110 ft.
Furnace
Maximum Minimum
Maximum
Model Number Furnace
Wire
Fuse or Circuit
*RA
Amperes
Gauge
Breaker Amps**
045-08A
6.8
14
15
054-12A
9.3
14
15
072-12A
9.3
14
15
072-12B
9.3
14
15
072-16B
11.6
14
15
090-12B
9.3
14
15
090-16B
11.6
14
15
090-20B
15.6
12
20
108-16B
11.6
14
15
108-20B
15.6
12
20
108-20C
15.6
12
20
126-20C
15.6
12
20
