Nordyne M1GH 056 Installation Instructions And Owner's Manuals page 25
M1b series, m1g series, m1m series and m1s series downflow, direct vent (sealed combustion) forced air gas and oil furnaces
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Also See for M1GH 056:
- Owner's manual and installation instructions (40 pages) ,
- Owner's manual & installation instructions (40 pages)
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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.
ON/OFF
SWITCH
SUPPLIED
BY INSTALLER
A/C
BLOWER
RELAY
L1
NEUTRAL
WHITE
GROUND SCREW
LEGENDS
115V:
FIELD 115V:
24V:
FIELD 24V:
Figure 42. Gas Atmospheric Furnace, A/C Ready, M1G (B, C, D) 056, 070 Models
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.
TIE WIRE
ON/OFF
SWITCH
SUPPLIED
RED*
BY INSTALLER
A/C
L1
BLOWER
NEUTRAL
RELAY
GROUND
SCREW
LEGENDS
115V:
FIELD 115V:
24V:
FIELD 24V:
Figure 43. Standing Pilot with Induced Draft Furnace, A/C Ready M1G (B, C, D) 077, 090 Models
BLOWER
HEATING/
MOTOR
COOLING
2 SPEED
W
G
R
C
1
2
3
4
5
6
CONNECTOR
HOUSING CAP
WHITE
*
RED
BLACK
RED
(SEE NOTE)
TIE WIRE
GRAY
TRANSFORMER
BLUE
GREEN
4
6
3
2
5
1
ORANGE
GRAY
FURNACE ELECTRICAL BOX
*M1G(C,D) Heating - replace orange wire with
red wire (low speed)
NOTE: To run at same speed in both heating and cooling mode,
remove wire from either terminal 4 or 6 on the relay, then attach
GAS VALVE
jumper to terminals 4 and 6.
BLOWER
HEATING/
MOTOR
W
COOLING
SINGLE
SPEED
G
R
C
CONNECTOR
1
2
3
4
5
6
HOUSING CAP
RED
WHITE
BLACK
BLUE
BLUE
4
6
3
COMBUSTION
BLOWER
2
5
1
RELAY
GRAY
BLACK
GRAY
TRANSFORMER
BLACK
ORANGE
GREEN
4
6
3
2
5
1
ORANGE
WHITE
GRAY
FURNACE ELECTRICAL BOX
* Jumper Wire - M1GB Units Only
Otherwise Hi-Speed Connected
GAS
to Blower Relay
VALVE
AUX. LIMIT
BLUE
BLUE
BLUE
HI-LIMIT
FAN
SWITCH
BLACK
GRAY
24 V
R
C
L1
N
115 V
WHITE
BLACK
BLUE
AUX. LIMIT
BLUE
BLUE
HI-LIMIT
FAN
SWITCH
BLACK
24 V
R
C
L1
N
115 V
WHITE
WHITE
BLACK
BLACK
BLUE
HEATING/COOLING
BLOWER
MOTOR
4 SPEED
1
2
3
4
5
6
MANUAL RESET
VENT SWITCH
703889B
HEATING/COOLING
BLOWER
BLOWER
MOTOR
MOTOR
4 SPEED
2 SPEED
1
2
3
4
5
6
1
2
3
4
5
6
1
2
COMBUSTION FAN
CONNECTOR
HOUSING
PRESSURE
SWITCH
703890A
25
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