WIRING DIAGRAM INDOOR FURNACE
Wiring Diagram
B
B
FAN LIMIT CONTROL
ORANGE
YELLOW
WALL THERMOSTAT
BLACK
YELLOW
RED
RED
RED
RELAY
3 SPEED SWITCH
120V AC/24V AC TRANSFORMER
BLUE (MED) RED (LOW) BLACK (HI)
DRAFT MOTOR ON/OFF SWITCH
120V AC POWER SUPPLY WHITE
A
A
BLACK GREEN
WHITE
BLACK
3 SPEED BLOWER MOTOR
DRAFT BLOWER MOTOR
2
1
18
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