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506471-01Page 38 of 41 Issue 1034
Wiring Diagram
5 AMP
IGNITION CONTROL
TRANSFORMER
INDUCED
DRAFT
BLOWER
INTERLOCK
SWITCH
12
21
C
HI
GAS VALVE
M
MAIN
LIMIT
12
96
3
11
8
5
2
10
7
41
3
3
120V
24V
HOT
NEUTRAL
GROUND
120/1/60
1
2
3
4
5
BLK
RED
WHT
WHT
RED
BLK
5-PIN
CONNECTOR
WHT
YEL
YEL
WHT
BLU
ORN
RED/BLK
RED
WHT
YEL
VLT
BRN
GRY
BLK
BLK/WHT
WHT
RED/BLK
YEL
YEL
BLK
WHT
ORN
BLU
GRY
GRN
WHT/BLK
RED
BRN
2
21
1
2-PIN
CONNECTOR
FLAME
SENSOR
IGNITER
S1
P1
AUX LIMIT
SWITCH
VLT
VLT
PRESSURE
SWITCH
(HIGH)
VLT
VLT
VLT
BRN
BRN
WHT
CIRCULATION
BLOWER
5-PIN
CONNECTOR
12 453
INPUT CHOKE
(IF USED)
BLK
GRN
WHT
BLK
Y
C
G
R
W1
W2
W2
GRY
W1
THERMOSTAT
CONDENSER
LINE
EAC
XFMR
CIRC
HUM
HUM
XFMR
LINE
PARK 1
COOL
EAC
HI HEAT
LO HEAT
NEUTRAL
HOT
CONT
PARK 2
DEHUM
O
Y2
C
BRN
TYP
LINE VOLTAGE - FACTORY
LINE VOLTAGE - FIELD
LOW VOLTAGE - FACTORY
LOW VOLTAGE - FIELD
PRESSURE
SWITCH
(LOW)
PRESSURE
SWITCH -
DRAIN
(IF USED)
ROLLOUT
SWITCH
(IF USED)
ROLLOUT
SWITCH
N
ON
E
1
0
5
P5
AUX LIMIT
SWITCH
(IF USED)
WHT/BLK
SW1
GREEN LED
RED LED
AMBER LED
FAULT CODE
HISTORY
BUTTON
(SEE NOTE 1)
AUTOMATIC
HEAT STAGING
JUMPER
NOTES:
1. PRESS AND RELEASE FAULT CODE HISTORY BUTTON TO
DISPLAY FAULT CODES. TO ERASE CODES, PRESS AND HOLD
BUTTON IN FOR MORE THAN 5 SECONDS
2. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE REPLACED, IT MUST BE REPLACED
WITH WIRING MATERIAL HAVING A TEMP. RATING OF AT LEAST 90°C.
3. PROPER POLARITY MUST BE OBSERVED FOR FIELD LINE VOLTAGE SUPPLY; IGNITION CONTROL WILL LOCK
OUT IF POLARITY IS REVERSED.
4. FOR TEMPORARY SERVICE REPLACEMENT OF CIRCULATING BLOWER MOTOR WITH PSC MOTOR, CONNECT
DESIRED SPEED TAP TO “EAC” TERMINAL AND NEUTRAL TAP TO NEUTRAL TERMINAL ON IGNITION CONTROL.
5. DO NOT CONNECT C (COMMON) CONNECTION BETWEEN INDOOR UNIT AND THERMOSTAT EXCEPT WHEN
REQUIRED BY THE INDOOR THERMOSTAT. REFER TO THE THERMOSTAT INSTALLATION INSTRUCTIONS.
Figure 40