440 01 4800 01
33
Specifications subject to change without notice.
115--V Wiring
Furnace must have a 115-v power supply properly connected and
grounded.
NOTE
: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, control LED status indicator light will flash
rapidly (Status Code 10) and furnace will
NOT
operate.
Verify that the voltage, frequency, and phase correspond to that
specified on unit rating plate. Also, check to be sure that service
provided by utility is sufficient to handle load imposed by this
equipment. Refer to rating plate or
Table 11
for equipment
electrical specifications.
USA Installations
: Make all electrical connections in accordance
with the current edition of the National Electrical Code (NEC)
NFPA 70 and any local codes or ordinances that might apply.
Canada Installations
: Make all electrical connections in
accordance with the current edition of the Canadian Electrical
Code CSA C22.1 and any local codes or ordinances that might
apply.
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
Do not connect aluminum wire between disconnect
switch and furnace. Use only copper wire. See
Fig.
35.
!
WARNING
COPPER
WIRE ONLY
ELECTRIC
DISCONNECT
SWITCH
ALUMINUM
WIRE
GROUND
NEUTRAL
LINE VOLTAGE
A11146
Fig. 35 -- Field--Supplied External Electrical Box on Furnace
Casing
Use a separate, fused branch electrical circuit with a properly sized
fuse or circuit breaker for this furnace. See
Table
11 for wire size
and fuse specifications. A readily accessible means of electrical
disconnect must be located within sight of the furnace.
J--Box Installation
FIRE OR ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
High voltage field connections must be located in J--Box
with furnace, or in field supplied external disconnect
mounted to furnace.
If field--supplied manual disconnect switch is to be mounted
on furnace casing side, select a location where a drill or
fastener cannot damage electrical or gas components.
!
WARNING
The J--Box must be used when field line voltage electrical
connections are made to the furnace wiring harness inside the
furnace casing. The J--Box cover is not required if a field--supplied
external electrical box is attached to the outside of the furnace
casing. The field ground wire and furnace main ground wire are
grounded when the J--Box bracket is attached to the furnace and
the field ground wire and factory ground wire are secured to the
bracket grounding screw. If the J--Box cover is not used, the field
and factory spliced connections must be located inside the external
electrical box. Do not leave splice connections unprotected inside
the furnace.
A12226
Fig. 36 -- Installing J--Box (When Used)