Nordyne Furnace Wiring Diagram, Control Board, and Thermostat Wiring Guide

36

WIRING DIAGRAM	Gas Atmospheric Furnaces,
	A/C Ready, M1G (B, C, D) 056, 070 Models

Figure 42. Gas Atmospheric

				3 SPEED
NOTES				BLOWER
		HEATING/		MOTOR
1. Incoming power must be polarized. Observe color
		COOLING			(MED.BLUEHI) (LOW)RED
coding. (See furnace data label for electrical				(HIGH)BLACK			WHITE		WHITE
information.)								W
2. If any of the original wires (as supplied with the								G
appliance) must be replaced, use 105˚C								R
Thermoplastic type wire or its equivalent.								C
ON/OFF	CONNECTOR		1	2	3 4	5	6
	HOUSING CAP
SWITCH
		*	RED					WHITE
			BLACK
			RED
			(SEE NOTE)					GRAY	RED
			TIE WIRE

AUX. LIMIT

BLUE

BLUE

BLUE

HEATING/COOLING

BLOWER

MOTOR

4 SPEED

(LOW) (HIGH) (MED.HI) (MED. LO)

Furnace, A/C Ready,

BLACK

BLACK

BLUE

GRAY

ORANGE

	FUSE3A	HI-LIMIT
	BLACK
	GRAY		GREEN
TRANSFORMER
R	24 V			C

FAN

SWITCH

RED BLACK BLUE ORANGE WHITE

1 2 3 4 5 6

M1GB 056, 070 Models

SUPPLIED

L1

115 V

N

BY INSTALLER

A/C

4

6

3

GREEN

WHITE

BLOWER

2

5 1

L1

RELAY

NEUTRAL

ORANGE

WHITE

BLACK

MANUAL RESET

GROUND SCREW

GRAY

BLUE

VENT SWITCH

FURNACE ELECTRICAL BOX

*M1G(C,D) Heating - replace orange wire with red wire (low speed)

LEGENDS

M1GB 070 Heating - replace orange wire with blue

115V:

FIELD 115V:

A/C & Heating Speeds: Refer to Table 10, A/C Blower Selection in the manual

24V:

FIELD 24V:

GAS VALVE

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

jumper to terminals 4 and 6.

7101500 8/00

(Replaces 7101030)