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115-VAC (L1)
POWER
SUPPLY
HOT SURFACE
CONNECTOR
FIVE WIRE
THREE-WIRE
HEATING-ONLY
BLOWER DOOR SWITCH
BLK
BLK
WHT
WHT
GND
GND
AUXILIARY
115-V FIELD-
J-BOX
SUPPLIED
DISCONNECT
FURNACE
Fig. 15—Heating and Cooling Application Wiring Diagram
BLOWER OFF DELAY
ADJUSTMENT SWITCH
TEST/TWIN
SEC-1
3-AMP FUSE
COOL
HEAT
115-VAC (L2) NEUTRAL
CONNECTION
INDUCER MOTOR
IGNITER
CONNECTOR
Fig. 14—Furnace Control
NOTE 2
W
C
R
W
C
R
O
N
T
R
G
O
L
C
NOTE 1
Y
24-V
TERMINAL
BLOCK
NOTES:
1.
2.
3.
24V THERMOSTAT
G
TERMINALS
R
Y
W
HUMIDIFIER TERMINAL
C
OM
(24-VAC 0.5 AMP MAX)
24V
HUM
LED OPERATION &
STATUS LIGHT
HARNESS CONNECTOR
24V TRANSFORMER SEC-2
SPARE 1
BLOWER SPEED
SELECTION TERMINALS
SPARE 2
EAC 1 (BLACK)
EAC-ELECTRONIC AIR CLEANER
TERMINALS (115-VAC 1.0 AMP MAX)
EAC 2 (WHITE)
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
Connect Y-terminal in furnace as shown for proper blower operation.
Some thermostats require a "C" terminal connection as shown.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
12
FIELD-SUPPLIED
DISCONNECT
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
GND
A99258
A98521
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