Nortek SC Series Installation Instructions

33
Electrical Information
Figure 35. Emerson Wiring Diagram
IGNITOR
INDUCER
FLAME SENSOR
C
VENT
LIMIT
DOOR
SWITCH
R
FLAME
ROLLOUT
GAS
VALVE
SUPPLY
AIR LIMIT
24 V
120 V
WHITE W/ BLK STRIPES
BLK W/ WHITE STRIPES
1234
1234
1 2
1 2
1 2
1 2
PRESSURE
SWITCH
WHITE
BLACK
T1
T2
T4
X
COM
T3
1
2
3
4
5
6
7
8
9
123456789
MOTOR
12345NLCG
GREEN
4 1
8 5 2
9
12 10
3
6
7
11
LINE-N
XFMR-N
CIRC-N
120V HUM-N
EAC-N
IND-N
IGN-N
EAC-H
120V HUM-H
CIRC-H
XFRM-H
LINE-H
Y/ Y2
W
RGC
DHUM
Y
Y1
PRESSURE
SWITCH
2-PIN HOUSING
2-PIN PLUG
4-PIN
XFMR W/
4-PIN HOUSING
ORANGE
ORANGE
BLUE W/
WHITE STRIPES
9-PIN HOUSING
9-PIN PLUG
PLUG
NOTE: FOR
BLOWER
WIRING SEE
BLOWER TABLE
LITERATURE
6-PIN PLUG
ORANGE
BLACK
BLACK
BLUE
BLUE
GREEN
RED
YELLOW
YELLOW
BLACK
BLUE
BLUE
WHITE
BLACK
GREEN
WHITE
BLACK
BLACK
BLUE BLUE
GRAY
BLACK
WHITE
BLACK
BLUE
ORANGE
RED
RED
ORANGE
BLUE
BLACK
BLUE/WHITE
BLUE/WHITE
GRAY
BLACK
GREEN
BLUE
WHITE W/ BLK STRIPES
BLK W/ WHITE STRIPES
BLACK
WHITE
BLACK
BLACK
ON SELECT
MODELS
ON SELECT
MODELS
BLOWER
LIMIT
BLOWER
DECK
LIMIT
BLOWER
LIMIT
BLUE
BLUE
ON SELECT
MODELS
ON SELECT
MODELS
ON SELECT
MODELS
WHITE
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
For Single Stage Furnaces
Refer to the Installation Instructions provided with the furnace for the proper heating and cooling speeds for your application. If any of the original wire as supplied with the furnace must be replaced, it must be replaced with wiring material having a temperature of at least 105 C. Use copper conductors only.
10413000
(NEW)
03/22
Red LED Flash Error/Condition
1 System Lockout (Retries Exceeded) 2 Pressure Switch Stuck Closed 3 Pressure Switch Stuck Open 4 Open High Temperature Limit Switch 5 Flame Sensed>4.25 Seconds with Gas Valve De-Energized 6 Open Flame RO Switch 8 Ignitor Relay Error
10 Open Fuse 11 Ignitor Open 12 Inducer Relay Error
7 Low Flame Sense Signal 9 Twinning Fault
Control Failure / No Power / Internal Fault / IRQ Loss
Gas Heating Lockout (Gas valve energized when it should be de-energized)
Or Gas valve De-energized when it should be Energized
Rapid Flash Reverse Polarity
Continuous On Normal Operation
Flash codes stored in memory (auto-erased after 14 days)
Flash codes NOT stored in memory
Off
1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3
Position OFF OFF OFF ON OFF OFF ON ON OFF OFF ON OFF OFF OFF ON OFF ON ON ON OFF ON ON ON ON
Motor
SPEED
Cool
Y T1 T2 T3 T4 T1+T2 T1 T1 T1
Cool Motor SPEED DIPSWITCH SETTING (S1-1, S1-2, S1-3)
1 2 1 2 1 2 1 2
Position OFF OFF ON OFF ON ON OFF ON
Motor
SPEED
Heat
W T1 T2 T3 T4
Heat Motor SPEED DIPSWITCH SETTING (S2-1, S2-2)
1 2 1 2 1 2 1 2
Position OFF OFF ON OFF OFF ON ON ON
Motor
SPEED
Fan
G T1 T2 T4 T1+T2
Fan Motor SPEED DIPSWITCH SETTING (S2-3, S2-4)

Nortek SC Series Specifications

General

Brand	Nortek
Model	SC Series
Category	Furnace
Language	English