20 Rev. 1
WIRING DIAGRAMS
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
WARNING
!
GUIC (Models using WR50A55 Ignition Control)
YL YELLOW
OR ORANGE
VT VIOLET
GN GREEN
BK BLACK
BR BROWN
WH WHITE
BU BLUE
GY GRAY
RD RED
COLOR CODES:
LOW VOLTAGE (24V)
LOW VOLTAGE FIELD
HI VOLTAGE (115V)
HI VOLTAGE FIELD
NOTES:
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
20255601 REV.00
CAPACITOR
BR
BR
40 VA
TRANSFORMER
OR (MED LOW)
BK (HI)
BU (MED)
RD (LOW)
GAS VALVE
M1
P3
C2
COOL-H
Y
W
R
G
C
3
1
STEADY ON = REPLACE CONTROL
1 FLASH
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
3 FLASHES = PRESSURE SWITCH STUCK OPEN
4 FLASHES = OPEN PRIMARY OR AUXILIARY LIMIT
5 FLASHES = OPEN ROLLOUT LIMIT
7 FLASHES = LOW FLAME SENSE SIGNAL
INTERNAL TO
INTEGRATED CONTROL
JUNCTION
EQUIPMENT GND
FIELD GND
FIELD SPLICE
BLOWER HEAT
OFF DELAY SELECTOR
(SECONDS)
60
90
120
180
DIAGNOSTIC
LED
FUSE
24V THERMOSTAT
CONNECTIONS
115 VAC
24 VAC
SEE
NOTE 4
UNUSED MOTOR
LEADS TO BE
PLACED ON
PARK TERMINALS
OR TAPED
INTEGRATED
CONTROL
MODULE
MANUAL
RESET
AUXILIARY
LIMIT
BLOWER COMPARTMENT
BURNER COMPARTMENT
INDUCED DRAFT
BLOWER
GND
OVERCURRENT
PROT. DEVICE
IGNITER
SWITCH (TEMP.)
TR (6)
GND (8)
MV (12)
MVC (9)
PS (10)
HLI (7)
HLO (1)
RO2 (11)
RO1 (5)
TH (3)
MANUAL RESET ROLLOUT
LIMIT CONTROL
AUTO RESET PRIMARY
LIMIT CONTROL
GAS
VALVE
GND
NO
C2
P3
M1
TO
MICRO
FUSE 3 A
INTEGRATED CONTROL MODULE
24V THERMOSTAT CONNECTIONS
24 VAC
40 VA
TRANSFORMER
115 VAC
FL AME SE NS OR
INDOOR
AIR
CIRCULATION
BLOWER
JUNCTION BOX
LINE-H
LINE-N
EAC-H
EAC-N
HEAT-H
CIR-N
COOL-H
FP (2)
IGN
HUM-H
IND
XFMR-H
XFMR-N
HOT SURFACE
IGNITER
COOL
HUM-N
HEAT
INTEGRATED CONTROL MODULE
INTEGRATED CONTROL MODULE
GND
DISCONNECT
L
N
WARNING:
DISCONNECT POWER
BEFORE SERVICING.
WIRING TO UNIT
MUST BE
PROPERLY
POLARIZED
AND GROUNDED.
TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH
OVERCURRENT PROTECTION DEVICE
OR
ON
OFF
ON
ON
OFF
OFF
OFF
GND
GND
DISCONNECT
L
4. IF HEATING AND COOLING BLOWER SPEEDS ARE NOT THE SAME DISCARD JUMPER
BEFORE CONNECTING BLOWER LEADS. UNUSED BLOWER LEADS MUST BE PLACED ON
"PARK" TERMINALS OF INTEGRATED CONTROL OR TAPED.
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
RATING OF AT LEAST 105C. USE COPPER CONDUCTORS ONLY.
TERMINAL
SWITCH (PRESS.)
5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
= SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
HEAT-H
HUM-H
EAC-N
HUM-N
EAC-H
115 VAC HOT AND PAR K TERMINALS
DIP SWITCHES
ON
AS SHIPPED FROM FACTORY
PIN JUMPER
90
*
CIRC-N
120
60
180
XFMR-N
PRESSU RE
SWITCH
AUTO RESET PRIMARY
LIMIT CONTROL
MANUAL RESET
AUXILIARY
LIMIT CONTROL
PRESSU RE
SWITCH
CONTINUOUS FLASHES = UNANTICIPATED FLAME PRESENT
PLUG CONNECTION
6 FLASHES =
115V AC POWER REVERSED OR POOR UNIT GROUND
24VAC
3A
DOOR
SWITCH
JUNCTION BOX
FLAME
SENSOR
BURNER BOX
MANUAL RESET
ROLLOUT LIMIT
CONTROL
HOT
SURFACE
IGNITER
N
TO 115 VAC/ 1Ø /60 HZ
POWER SUPPLY
WITH OVERCURRENT
PROTECTION DEVICE
WARNING:DISCONNECT POWER
BEFORE SERVICING. WIRING
TO UNIT MUST BE PROPERLY
POLARIZED AND GROUNDED.
WH
BK
BR-21
GY-47
OR-3
BK-1
WH-2
BU-36
HUMIDIFIER
ELECTRONIC
AIR CLEANER
NO
C
INDOOR
AIR
CIRCULATION
BLOWER
ID
BLWR
C
R
W
Y
G
C
4
5
6
7
9
10
11
12
2
8
1
2
3
4
5
6
7
C
0
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