Electrical Connections - International comfort products R9MSB0801716 Installation Instructions Manual

INSTALLATION INSTRUCTIONS
1 1/2 inch for Gas
NOTE: Top plate may be field drilled for
alternate gas and 115 VAC electric entry
Figure 35 − Alternate Gas and Electric Entry

ELECTRICAL CONNECTIONS

WARNING
!
ELECTRICAL SHOCK,
HAZARD
Failure to follow safety warnings could result in
dangerous operation, serious injury, death or property
damage.
Improper servicing could
operation, serious injury, death or property damage.
S
Before servicing, disconnect all electrical
power to furnace.
S
When servicing controls, label all wires prior
to disconnecting. Reconnect wires correctly.
S
Verify proper operation after servicing.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in
personal injury or death.
Blower door switch opens 115−v power to control.
No component operation can occur. Do not bypass
or close switch with blower door removed.
See Figure 39 for field wiring diagram showing typical field
115−v wiring. Check all factory and field electrical connections
for tightness.
Field−supplied wiring shall conform with the limitations of 63_F
(33_C) rise.
32
7/8 inch for 115 VAC Electric
A170125
FIRE OR EXPLOSION
result in dangerous
Specifications subject to change without notice.
WARNING
!
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
The cabinet MUST have an uninterrupted or
unbroken ground according to
NEC NFPA 70 or local codes to minimize personal
injury if an electrical fault should occur. In Canada,
refer to Canadian Electrical Code CSA C22.1. This
may consist of electrical wire, conduit approved for
electrical ground or a listed, grounded power cord
(where permitted by local code) when installed in
accordance with existing electrical codes. Refer to
the power cord manufacturer's ratings for proper
wire gauge. Do not use gas piping as an electrical
ground.
CAUTION
!
FURNACE MAY NOT OPERATE HAZARD
Failure to follow this caution may result in intermittent
furnace operation.
Furnace control must be grounded for proper
operation or else control will lock out. Control must
remain grounded through green/yellow wire routed to
gas valve and manifold bracket screw.
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 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 10 for
equipment electrical specifications.
U.S.A. 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.
WARNING
!
FIRE HAZARD
Failure to follow this warning could result in
personal injury, death, or property damage.
Do not connect aluminum
disconnect switch and furnace. Use only copper
wire. See Figure 37.
Use a separate, fused branch electrical circuit with a properly
sized fuse or circuit breaker for this furnace. See Table 10 for
wire size and fuse specifications. A readily accessible means of
electrical disconnect must be located within sight of the
furnace.
Gas Furnace: R9MSB
current edition of the
wire between
440 01 6001 05