Single Stage Multi Position Furnace
Service Manual
51
440 08 2001 02
Wiring Diagram (90+ Single Stage Furnaces)(A2)
Y
G
TH
ER
M
O
ST
AT
2
3
4
M
A
IN
L
IM
IT
GA
S
VA
LVE
N
N
G
N
Y
1
5
IN
D
U
C
E
R
M
O
TO
R
EA
C
115V
RO
LLOU
T
S
W
IT
C
H
1
TO
3 I
N S
ERI
ES
DE
PEN
DING
ON M
O
DE
L
3
6
4
2
TR
A
N
SF
O
R
M
E
R
L1
HU
M
L1
12
FAN CONTROL MODULE
W
Y
G
G
W
Y
W
TR
ANSFORM
ER
BL
O
W
ER
M
OT
O
R
L1
L1
L1
C1
NEUTRAL
BL
BK
INDU
CER
MOTO
R
R
FU
R
N
A
C
E
CO
NT
R
O
L
BK
W
RO
LL
O
UT
S
W
IT
C
H
1
TO
3
IN
S
E
R
IE
S
D
EPEND
IN
G
O
N
MO
D
E
L
W
BL
W
B
K
O
R
4
L1
CONT
COOL
1
2
EAC
3
HEAT
4
C2
4
5
6
24
V
S
E
C
O
N
D
A
R
Y
2
3
DA
TA
5A FUSE
24V
24
VAC
O
BK
R
ON
11
5V
60H
Z
HEAT ON DELAY: 30 SEC.
1012910-
E
DISCON
NECT BEFORE
S
ERVICING
DANGER:
ELECTRI
CAL
SHOCK HAZARD
CON
NEC
TION DI
A
GRAM
COOL ON DELAY: 5 SEC
COOL OFF DELAY: 60 SEC
S1
HEAT OFF DELAY
BL
G
A
S
VALV
E
R
W
BL
P
W
BK
G
N
D
COPPER
CONDUC
TORS
ONLY
6
N
E
U
TR
A
L
H
O
T
W
5
4
3
2
8
1
7
3
C3
C
O
M
W
24
V
A
C
C
Y
R
C
BL
R
W
Y
FU
R
N
A
C
E C
O
N
TR
O
L
G
BR
B
R
CA
PA
C
IT
O
R
Y
R
R
1
2
3
4
3
7
2
1
6
5
4
8
1
EA
C
HU
M
N
2
4
8
7
1
2
3
4
4
SEE M
ANUALS
FOR ADJ
USTING
SPEED T
APS FOR
PROPER
HEATIN
G, COOLI
N
G & CIR
CULATIN
G SPEED
S.
COLOR
CODE
6
3
5
BLACK
BK
BLUE
BL
BROWN
BR
GREEN
G
ORANGE
O
RED
R
WHITE
W
YELLOW
Y
PURPLE
P
1
SP
EE
D
TA
P
CO
DE
B
LAC
K-
H
I
BL
U
E
-M
LO
O
R
A
N
G
E
-M
HI
RE
D
-L
O
*
LINE VOL
TAGE FA
CTORY
LINE VOL
TAGE FI
ELD
LOW VO
LTAGE F
ACTORY
LOW VO
LTAGE FI
ELD
INTERNA
L CIRCUI
T BOARD
WIRING
5
A
FU
S
E
FACTORY
SETTING
1
2
N
N
B
LO
W
E
R
M
O
TO
R
LO
(R
)
M2
M
1
M
LO
(BL
)
G
N
D
.
HE
AT
M
HI (O)
C
OOL
H
I (
B
K)
LADD
ER DIAGR
A
M
IN
TE
R
LO
C
K
S
W
IT
C
H
H
O
T
115
V
-60H
Z
N
E
U
TR
AL
IF
A
NY
O
F
TH
E
O
R
IG
INA
L
W
IRE
A
S
SU
PP
LI
E
D
W
IT
H
TH
E
A
P
P
LI
A
NCE
M
U
S
T
B
E
R
E
PL
AC
ED
, I
T
M
U
ST
B
E
R
EP
LA
CE
D
W
ITH
T
Y
P
E
AW
M
-
105
°C
W
IRE
O
R
IT
S
EQ
UI
V
A
LE
N
T.
GA
S
VA
LVE
LP PRE
SSURE
SWIT
CH
(LP MOD
ELS ONL
Y)
ON
IN
TE
RLO
C
K
S
W
ITC
H
1
M
A
IN
L
IM
IT
FIELD
CONNEC
TION
BOX
L
P
P
R
ESS
UR
E
S
W
IT
C
H
(L
P
M
O
D
EL
S
O
N
LY
)
1 2
HUM
M2
M1
11
5V
P
R
IM
A
R
Y
R
1
2
3
THE
R
M
O
STAT
4
12
12
60 SEC.
140 SEC.
180 SEC.
12
100 SEC.
12
1
L1
L1
C
O
M
BL
L1
SE
N
S
O
R
IG
N
ITOR
BL
PRESSU
RE
SW
IT
C
H
1
TO
2 IN
SERI
ES
DEPEN
D
ING
ON
MOD
EL
PRESSU
R
E
SW
IT
C
H
1
TO
2 IN
SERI
ES
DEPEN
D
IN
G
ON
MOD
EL
BR
BR
C
A
P
A
C
IT
O
R
(S
O
M
E M
O
D
ELS)
CAPAC
IT
OR
(S
OME
MOD
E
LS
)
IG
N
IT
E
R
SENSOR
RECTIFI
ED AC V
OLTAGE
FACTOR
Y
NOTE: MOST V
OLT MET
ERS WIL
L READ 1
3-16 VOL
TS TO
CHASSIS
ON BOT
H
SIDES
OF AN O
PEN LIMI
T OR
PRESSU
RE SWIT
C
H IN TH
E RECTI
FIED AC
VOLTAG
E CIRCUI
T
BK
C
A
PACI
TO
R