Nortek MG1 Series - Wiring Diagrams; Nordyne;UTEC Control Board Wiring

27
Figure 32. Nordyne/UTEC Board Wiring Diagram
Electrical Information
1039357A
(Replaces
10393570
)
04/22
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
Gas Direct Ignion Furnace, Heang & A/C Ready. NOTES: 1. Incoming power must be polarized. Observe color coding. (See furnace data label for electrical informaon.) 2. If any of the original wires (as supplied with the appliance) must be replaced, use 105°C Thermoplasc type wire or its equivalent.
3. A wire from “Y” on the thermostat to the furnace is required.
C
H
L1
XFRM
NEU
1
2
3
4
5
6
7
8
9
6
54
3
2
1
W
COM
24V
C
R
G
FURNACE ELECTRICAL BOX
ON/OFF
SWITCH
PRESSURE
SWITCH
HI-LIMIT
AUX. LIMIT
1
1
2
2
IGNITOR
COMBUSTION
FAN
TRANS-
FORMER
24V
115V
N
C
L
R
GROUND
SCREW
GROUND
SCREW
GAS VALVE
NEUTRAL
L1
WIRE NUTS
SUPPLIED
BY
INSTALLER
1 2 3 4 5 N L C G
ECM
BLOWER
MOTOR
G
W
Y
R
C
CONTROL LIGHTS
1 2
1 2
BLACK
BLACK
1 2 3 4 5 6 1 2 3 4 5 6
MOTOR
CHOKE
(ON SELECT
MODELS)
YELLOW Steady ONGood Flame Signal Blinking Weak Flame Signal
Steady OFF No Flame Signal RED Steady ONControl OK Steady OFF No Power Rapid FlashFalse flame or internal control fault
1 FlashLimit switch is open
2 FlashesPressure switch is open with inducer on
3 FlashesPressure switch is closed with inducer off
4 FlashesLockout due to failed ignion
5 Flashes 115 vac & neutral reversed
CONTROL LIGHT STATUS
WHITE
YELLOW
RED
GRAY
GREEN
BLUE
BLUE
BLUE
GREEN
GREEN
RED
YELLOW
WHITE
BLACK
GRAY
BLACK
BLACK
WHITE
BLACK
BLACK
YELLOW
YELLOW
WHITE
BLACK
RED
GRAY
BLACK
BLACK
ORANGE
ORANGE
*Refer to blower table for factory heang speed.
RED
YELLOW
WHITE
BLACK
GRAY
BLACK