Nortek SC Series Installation Instructions

34
Single Stage Furnaces
LADDER DIAGRAM
1029967A
(10299670)
02/2020
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
Quantity and types of
limits and switches
may vary with models.
See Note
See Note
DOOR
SWITCH
L1 GND N
GND
BLOWER
MOTOR
CHOKE
(SOME MODELS)
GND
L1
FLAME SENSOR
ELECTRONIC
AIR CLEANER
HUMIDIFIER
HOT SURFACE IGNITOR
INDUCER
120 VAC
24 VAC
TRANSFORMER
K4
K3
K2
P1-7
EAC
P2-3
HUM
P2-1
XFORMER
NEUTRAL
NEUTRAL
NEUTRAL
NEUTRAL
P2-4
P2-6
NEUTRAL
SUPPLY AIR
LIMIT
ROLL-OUT
LIMIT
VENT
LIMIT
BLOWER
LIMIT
SWITCH
BLOWER
DECK LIMIT
SWITCH
24V
R
W
G
Y
C
P1-8
P1-3
P1-5
P1-6
P1-2
COM
P1-4
K1
PRESSURE
SWITCH
24V
K8
GND
P1-9
GAS
VLV
MICRO
TO MOTOR
RELAYS
3A FUSE
BLOWER
MOTOR
K5 HI
MED-HI
MED-LO
LO
K6
K7
K5
K6
K7
Figure 36. Nordyne/UTEC Ladder Diagram

Nortek SC Series Specifications

General

Brand	Nortek
Model	SC Series
Category	Furnace
Language	English