International comfort products F9MVT Installation Instructions Manual page 30

INSTALLATION INSTRUCTIONS
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 status indicator light flashes rapidly
and furnace does 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.
U.S.A. Installations: Make all electrical connections in
accordance with the current edition of the National Electrical
Code (NEC) ANSI/NFPA 70 and any local codes or ordinances
that might apply.
Canadian 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.
Figure 35 Heating and Cooling Application Single−Stage Wiring Diagram
THREE-WIRE
HEATING-ONLY
BLOWER DOOR SWITCH
BLK BLK
WHT WHT
GND
AUXILIARY
115-V FIELD-
J-BOX
SUPPLIED
DISCONNECT
30
NOTE 2
W C R
FIVE WIRE
W
C
R
O
N
T
GND
R G
O
L COM
NOTE 1
Y
24-V
TERMINAL
BLOCK
NOTES:
FURNACE
Specifications subject to change without notice.
Gas Furnace: (F/G)9MVT, (F/G)9MXT, (F/G)9MXE
WARNING
!
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.
SWITCH
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.
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
THERMOSTAT
G Y
TERMINALS
CONDENSING
UNIT
TWO
WIRE
1. Connect Y-terminal in furnace as shown for proper blower operation.
2. Some thermostats require a "C" terminal connection as shown.
3. If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
COPPER
WIRE ONLY
ALUMINUM
WIRE
FIELD-SUPPLIED
DISCONNECT
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
GND
440 01 4001 05
A11146
A11387