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37
Figure 43. Standing Pilot with Induced Draft Furnace, A/C Ready M1G (B, C, D) 077, 090 Models
152
A/C
BLOWER
RELAY
364
152
COMBUSTION
BLOWER
RELAY
3
64
ON/OFF
SWITCH
GAS
VALVE
HI-LIMIT
AUX. LIMIT
TRANSFORMER
PRESSURE
SWITCH
COMBUSTION FAN
L1 N
CR
24 V
115 V
BLACK
BLACK
BLACK
BLACK
BLACK
ORANGE
ORANGE
GREEN
WHITE
WHITE
WHITE
WHITE
GRAY
GRAY
BLUE
BLUE
21
GRAY
L1
NEUTRAL
GROUND
SCREW
FURNACE ELECTRICAL BOX
RED
BLACK
BLUE
TIE WIRE
HEATING/
COOLING
BLUE
C
R
G
W
FAN
SWITCH
BLUE
RED*
CONNECTOR
HOUSING
GRAY
3A FUSE
GREEN
LEGENDS
115V: FIELD 115V:
24V: FIELD 24V:
HEATING/COOLING
654321
RED (LOW)
BLACK (HIGH)
BLUE (MED. HI)
ORANGE (MED. LO)
WHITE
BLOWER
MOTOR
4 SPEED
CONNECTOR
HOUSING CAP
SUPPLIED
BY INSTALLER
*
Jumper Wire - M1GB 090 Units Only
Otherwise Hi-Speed Connected
to Blower Relay (Black)
- M1GB 077 Heating: Orange wire
replaced by Blue
- M1GB 090 Heating: Orange wire
replaced by Black
GRAY
RED
GREEN
WHITE
BLACK
BLACK
RED
NOTES
1. Incoming power must be polarized.
Observe color coding. (See furnace
data label for electrical information.)
2. If any of the original wires (as supplied
with the appliance) must be replaced,
use 105˚C Thermoplastic type wire or
its equivalent.
654321
RED (LOW)
BLACK (HIGH)
BLUE (MED. HI)
WHITE
3 SPEED
BLOWER
MOTOR
A/C & Heating Speeds: Refer to
Table 10, A/C Blower Selection
in the manual
710151 08/00