92
Rev. 2
WIRING DIAGRAMS
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
WARNING
!
YL YELLOW
OR ORANGE
VT VIOLET
GN GREEN
BK BLACK
BR BROWN
WH WHITE
BU BLUE
GY GRAY
RD RED
COLOR CODE
LOW VOLTAGE
LOW VOLTAGE FIELD
HI VOLTAGE
HI VOLTAGE FIELD
HEATING BLOWER SPEED
MANUFACTURER'S
VARIABLE LETTER
MOTOR TO "HEAT"
FACTORY WIRED BLOWER MOTOR TO CONTROL CONNECTIONS
COOLING
BLOWER SPEED
SEE
INSTALLATION
INSTRUCTIONS
TO DETERMINE
PROPER
COOLING
BLOWER SPEED.
MOTOR
SPEEDS
SPEED
GUI*,GCI*: 045*30,
070*40
RD-24
LOW
4
IMPORTANT:
4. UNUSED BLOWER MOTOR LEADS MUST BE PLACED ON "PARK" TERMINALS OF CONTROL OR TAPED.
READ BEFORE OPERATING OR SERVICING THIS UNIT.
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING
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
105°C. USE COPPER CONDUCTORS ONLY.
5 IF HEATING AND COOLING BLOWER SPEEDS ARE NOT THE SAME DISCARD JUMPER BEFORE CONNECTING
BLOWER LEADS.
OR-3
GUI*,GCI*: 090*30,
115*40,140*50
HI
BK-26
4
*
**
6 DIAGNOSTIC LIGHT:STEADY=REPLACE CONTROL;1 FLASH=LOCKOUT;2 FLASHES=PS STUCK CLOSE;
3 FLASHES=PS STUCK OPEN;4 FLASHES=OPEN HIGH LIMIT SWITCH;5 FLASHES=RED WIRE ON CONTROL
CONNECTOR OPEN
11072901 REV. 0
AUX LIMIT
CONTROL
BR-27
PRIMARY
ROLLOUT
LIMIT (RL)
FLAME
SENSOR
COMBUSTION
BLOWER
(CB)
DOOR SWITCH (CLOSED
WHEN DOOR IN PLACE)
115V
FIELD
CONNECT
AIR
CIRCUL.
BLOWER
(ACB)
CAPACITOR
(CAP)
BR
BR
X
F
M
R
I
G
N
I
N
D
C
O
O
L
H
E
A
T
P
A
R
K
P
A
R
K
L
I
N
E
X
F
M
R
L
I
N
E
C
I
R
W
Y
LOAD
LINE
TRANSFORMER
#29 OR (MED LOW)
#26 BK (HI)
#23 BU (MED)
#24 RD (LOW)
PRESSURE
SWITCH (PS)
NC
NO
COM
**
*
CONTROL
BK-3
OR-16
BU-15
BU-25
YL-11
VT-20
GY-47
BR-21
BK-1
WH-2
RD-22
BU-36
VT-55
BK-6
WH
GN
RD-44
12
GY-25
1
4
7
10
11
8
5
2
3
6
9
BR-21
GY-47
BU-25
YL-11
BU
-36
GY
-25
WH-33
BK-6
BK-1
VT
-55
RD
-22
Y
W
THERMOSTAT
CONNECTIONS
CONTROL
6
5
5
6
TERMINAL ORDER REARRANGED FOR CLARITY
THERMOSTAT
CONNECTIONS
**
*
WARNING:DISCONNECT POWER
BEFORE SERVICING.WIRING TO
UNIT MUST BE PROPERLY
POLARIZED AND GROUNDED.
IGNITOR
WH-
23
WH
GND
N
L1
R
G
C
LIMIT
R
G
C
ELECTRICAL BOX
H
U
M
E
A
C
H
U
M
E
A
C
115V FIELD
CONNECT
HUMIDIFIER
115V FIELD
CONNECT
ELECTRONIC
AIR CLEANER
H
O
T
12
0V
A
C
N
E
U
T
R
A
L 12
0V
A
C
C
IR
C
U
L
AT
O
R
BL
O
W
E
R
TH
FP
H
L
O
RO
1
TR
MV
G
N
D
H
L
I
PS
RO
2
MV
GUI*,GCI*: 115*50
BU-23
4
MED
WH
BK
OR
-3
VT
-20
GUI*,GCI*: 070*30,
090*50
OR-29
MED LOW
4
VT-14
GAS VALVE
(GV)
1
2
3
M
C
P
PRIMARY LIMIT
CONTROL
PRIMARY
RL
N
L1
DOOR
SWITCH
GND
IGNITOR
GV
CB
PS
NO
C
L
I
N
E
H
O
T
X
F
M
R
H
O
T
X
F
M
R
N
E
U
T
R
T
H
P
S
M
V
M
V
C
O
O
L
H
E
A
T
P
A
R
K
I
G
N
I
N
D
L
I
N
E
N
E
U
P
A
R
K
120 V
TRANS-
FORMER
24 V
S
E
N
S
O
R
CAP
ACB
L
I
M
I
T
F
L
A
M
E
WARNING:DISCONNECT POWER BEFORE
SERVICING.WIRING TO UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
H
L
I
H
L
O
C
I
R
R
N
E
U
F
P
H
U
M
H
O
T
H
U
M
N
E
U
E
A
C
H
O
T
E
A
C
N
E
U
C
NC
NO
A
U
X
L
I
M
I
T
G
N
D
GN
FURNACE MODEL
*
