12
30 SEC.
12
12
12
12
2 STAG
E
43
12
SING
LE STAGE
4
3
LIMIT
MAIN
12
1
*
2-STAGE
4
2 STAGE
P2
INTERNAL CIRCUIT BOARD WIRING
LOW VOLTAGE FIELD
LOW VOLTAGE FACTORY
LINE VOLTAGE FIELD
LINE VOLTAGE FACTORY
COLOR CODE
8
2
N
HUM
N
EAC
24V
N
HUM
ON
34
43
SETTING
FACTORY
4
60 SEC.
33
100 SEC.
4
HOT 115V-60HZ NEUTRAL
DANGER: ELECTRICAL SHOCK HAZARD
DISCONNECT BEFORE SERVICING
GND.
SWITCH
INTERLOCK
CONNECTION DIAGRAM
SWITCH
INTERLOCK
BOX
CONNECTION
FIELD
COOL OFF DELAY: 60 SEC
COOL ON DELAY: 5 SEC
1013375-B
SEE MANUALS FOR ADJUSTING SWITCHES FOR PROPER HEATING, COOLING & CIRCULATING SPEEDS.
S1
L1
EAC
CAPACITOR
(SOME MODELS)
N
LADDER DIAGRAM
60HZ
115V
3344
G
Y
G
R
W
1
W
2
G
Y
C
R
R
SWITCH
PRESSURE
LOW
3
2
3
8
7
+
VALVE
GAS
-
2
6
23
4
1
5
1
O
N
R
Y
4
BK
9
BK
HOT
8
5
W
6
51
GND
6
2
2
BL
7
3
NEUTRAL
84
3
1
Y
THERMOSTAT
SINGLE STAGE
R
R
Y
BL
BK
Y
W
W
BL
BK
IN
D
L
O
W
H
E
A
T
L
O
W
5A FUSE
W
2
W
1
G
BL
R
BR
Y
BK
C
G
G
Y
W1
R
W2
24V SECONDARY
115V PRIMARY
FAN CONTROL MODULE
12
140 SEC. 60 SEC.180 SEC.
43
12
1
8
FURNACE CONTROL
R
SWITCH
PRESSURE
HIGH
R
GAS VALVE
R
SWITCH
PRESSURE
LOW
MAIN LIMIT
BL
3
6
4
7
THERMOSTAT
2-STAGE
2
VALVE
GAS
5
R
N
BL
BL
N
SENSOR
1
2
3
4
L1
IGNITER
BK
W
+
2 STAGE
BK
P
BL
(LP MODELS ONLY)
SWITCH
LP PRESSURE
4
2
4
L1
H
E
A
T
H
I
IN
D
H
I
C
O
O
L
E
A
C
H
U
M
C
O
N
T
IN
D
IN
R
W
W
O
W
W
P1
W
MOTOR
INDUCER
M2
M1
W
L1
XFMR
O
L1
BK
BK
1
4
4
P1
2
1
5
3
7
4
6
5
3
6
9
1
W
1
Y
W2
G
TRANSFORMER
Y
W
L
IN
E
1
2
0
V
A
C
X
F
M
R
D
C
M
T
R
P1
COM
3
NEUTRAL
2
1
VAC
24
47
P
2
Y
2
C
R
(OPTIONAL)
HUMIDISTAT
W
G
1
2
3
4
Y
Y
W1
G
TRANSFORMER
HIGH
INDH
MOTOR
INDUCER
LO
INDIN
INDL
1
2
3
4
3
1
115V
R
R
COM
BR
24VAC
BR
5 A FUSE
24VAC
IGNITER
SENSOR
2 STAGE
-
+
-
S
H
IE
L
D
B
E
A
D
G
BL
IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE
REPLACED, IT MUST BE REPLACED WITH TYPE AW M-105ÂșC WIRE OR EQUIV.
S
H
IE
L
D
B
E
A
D
1
1
5
V
H
O
T
J
U
M
P
E
R
, S
U
R
G
E
J
U
M
P
E
R
, S
U
R
G
E
1
1
5
V
N
E
U
T
R
A
L
J
U
M
P
E
R
, 1
1
5
V
J
U
M
P
E
R
, 1
1
5
V
DC MOTOR
CONTROL
*A
IR
F
L
O
W
D
IP
S
W
IT
C
H
E
S
TH
ERM
O
STA
T TYPE
HEA
T O
N DELAY
H
EAT OFF D
ELAY
R
O
LL
O
U
T
S
W
IT
C
H
1
T
O
3
IN
S
E
R
IE
S
D
E
P
E
N
D
IN
G
O
N
M
O
D
E
L
H
IG
H
P
R
E
S
S
U
R
E
S
W
IT
C
H
R
O
LL
O
U
T
S
W
IT
C
H
1 T
O
3
IN
S
E
R
IE
S
D
E
P
E
N
D
IN
G
O
N
M
O
D
E
L
C
A
P
A
C
IT
O
R
(S
O
M
E
M
O
D
E
LS
)
(HI VOLT FIELD)
COPPER
CONDUCTORS
ONLY
CIRCUIT BOARD
1
4
23
5
6
G
BL
Y
R
G
BL
Y
R
DC
BLOWER
MOTOR
5
4
3
2
1
10
9
8
7
6
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
6
7
8
MOTOR
BLOWER
DC
*A
IR
F
L
O
W
D
IP
S
W
IT
C
H
E
S
DC MOTOR
CONTROL
J
U
M
P
E
R
, 1
1
5
V
J
U
M
P
E
R
, 1
1
5
V
1
1
5
V
N
E
U
T
R
A
L
J
U
M
P
E
R
, S
U
R
G
E
J
U
M
P
E
R
, S
U
R
G
E
1
1
5
V
H
O
T
5
4
3
2
1
10
9
8
7
6
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
6
7
8
5
4
3
2
1
10
9
8
7
6
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
6
7
8
MOTOR
BLOWER
DC
*A
IR
F
L
O
W
D
IP
S
W
IT
C
H
E
S
DC MOTOR
CONTROL
J
U
M
P
E
R
, 1
1
5
V
J
U
M
P
E
R
, 1
1
5
V
1
1
5
V
N
E
U
T
R
A
L
J
U
M
P
E
R
, S
U
R
G
E
J
U
M
P
E
R
, S
U
R
G
E
1
1
5
V
H
O
T
L
P
P
R
E
S
S
U
R
E
S
W
IT
C
H
(LP
M
O
D
E
LS
O
N
LY
)
W
2
BLACK
BLUE
BROWN
GREEN
ORANGE
RED
WHITE
YELLOW
PURPLE
BK
BL
BR
G
O
R
W
Y
P
EAC + HUM: 0.8 A MAX. COMBINED
THERMOSTAT
1
2
NOTE: MOST VOLT METERS WILL READ 13-16 VOLTS TO
CHASSIS ON BOTH SIDES OF AN OPEN LIMIT OR PRESSURE
SWITCH IN THE RECTIFIED AC VOLTAGE CIRCUIT
RECTIFIED AC VOLTAGE FACTORY