→
Fig.
45—Furnace
Wiring
Diagram
A05038
PCB
J 2
R
W
C
HU
M
EAC
-2
JB
L
E
G
E
N
D
L
S
1
, 2
L
IMIT
SWITC
H
, AU
TO-
RESET
,
SP
ST(
N.C
.)
OL
AU
TO-
RESET INTERNA
L
M
OTOR
OV
ERL
OAD
T
E
M
P
E
RA
T
U
R
E
S
W
IT
C
H
(N
.C
.)
P
C
B
P
RINTED
C
IR
C
UI
T B
O
ARD
C
O
NT
ROL
PL1
11-C
IR
C
U
IT
PC
B CO
N
N
E
C
T
O
R
PL2
2-C
IR
C
UI
T
CO
N
N
E
C
T
O
R
P
L
3
2
-C
IR
C
U
IT H
S
I,
C
O
NNEC
T
O
R
P
R
S
P
RESS
URE SWI
TC
H
,
SP
ST-
(N
.O.
)
TES
T/
TWI
N
C
OM
P
O
N
ENT TEST
& TW
IN
TERM
INAL
TR
A
N
TR
A
N
S
F
OR
M
E
R
-115V
A
C
/24V
A
C
JU
N
C
T
IO
N
UNM
ARK
ED T
E
RMI
NAL
PC
B
CO
N
T
R
O
L
T
E
R
MI
N
A
L
F
A
C
T
O
R
Y
W
IR
IN
G
(
115V
A
C
)
F
A
C
T
ORY
W
IRI
NG
(2
4
V
AC
)
FIELD
W
IR
IN
G
(
115V
A
C
)
F
IEL
D W
IR
ING
(2
4
V
AC
)
C
O
NDU
C
TOR
ON C
O
N
T
ROL
P
C
B
F
IEL
D W
IR
ING
SC
REW
TERMI
NA
L
FI
E
L
D
E
A
R
T
H G
R
O
U
N
D
EQU
IP
MENT
GROU
ND
FI
E
L
D
S
P
LI
C
E
P
L
U
G
REC
EP
T
A
C
L
E
L1
L1
BL
W
R
BH
T
/C
LR
TO 1
1
5
VAC F
IELD DI
SCO
NN
ECT
SW
IT
CH
E
Q
U
IPM
EN
T
G
R
O
U
N
D
SPAR
E-
1
HE
A
T
C
OOL
ST
AR
T
OL
HI
MED
L
O
LO
BL
W
M
S
C
H
E
MA
T
IC DI
A
G
RA
M
(N
AT
U
R
A
L
&
P
R
OP
AN
E G
ASES
)
1
HS
I
2
PL3
CA
P
L2
NO
T
E
S
:
32755
9-1
01
RE
V.
E
om
NE
U
T
RA
L
L2
IL
K
FU
2
L1
IL
K
RED
BLU
ORN
GRN/Y
EL
TE
S
T
/T
W
IN
24
V
FU
1
LE
D
1
2
3
4
5
6
7
8
91
0
BL
O
W
ER
O
FF-
DE
L
A
Y
J
U
M
P
E
R
SEL
EC
T
O
R
YEL
OL
STAR
T
BL
K
WH
T
WHT
(
C
OM
)
BL
K
BL
K
WH
T
WH
T
2
1
PL
2
BL
W
M
CAP
SPAR
E 1
EAC-
1
PR
1
L1
SEC
-2
SEC-
1
EA
C
-2
PL
1
BR
N
BR
N
RE
D
(
L
O)
WH
T
(C
O
M
)
BL
U
(M
E
D
L
O
)
CO
M
G
BL
K (
H
I)
115
V
A
C
PR
1
TR
A
N
24
VAC
LG
PS
PR
S
FS
E
ID
M
(W
H
E
N USE
D)
F U
1
NO
T
E
#6
R
W
SE
C
-1
SE
C
-2
HUM
CP
U
G
C
GV
R
OM
Y
1.
If
an
y o
f the
ori
gi
na
l e
q
u
ip
m
e
nt
w
ir
e
is
r
e
p
lac
ed
u
se
w
ir
e
rat
e
d
for 1
0
5¡
C
.
2.
U
se
o
n
ly
cop
pe
r
w
ire b
e
tw
ee
n t
h
e
dis
co
n
n
e
ct
sw
itc
h
and
t
h
e furnac
e junc
tio
n
b
o
x
(
JB
).
3
.
Th
is
wi
re
m
u
st
b
e
c
o
nn
ec
te
d
to
f
u
rn
ac
e
s
h
e
e
t met
a
l f
o
r co
nt
ro
l t
o
pr
ov
e
f
lame.
4.
S
ym
b
o
ls
are e
lectr
ic
al
rep
re
se
nt
a
tio
n
on
ly
.
5
.
So
lid l
in
e
s
in
si
de PCB a
re p
ri
n
te
d c
ir
cu
it b
o
a
rd
c
o
nd
uc
to
rs
a
n
d
ar
e
no
t i
n
cl
u
d
e
d
in
le
g
e
n
d
.
6.
R
e
pl
ac
e o
n
ly
w
ith
a 3
am
p
f
u
se.
7.
In
duc
er (I
D
M
) an
d
bl
ow
er (
B
L
W
M
)
m
o
to
rs co
ntai
n
in
ter
n
a
l a
u
to-r
e
se
t t
h
erm
a
l o
verl
o
a
d
sw
itche
s (O
L
).
8.
N
e
utr
al
con
ne
ct
io
ns
are
in
te
rc
h
a
n
g
eab
le
w
ith
in t
h
e
N
E
U
TR
A
L
c
onn
ec
to
r b
loc
k.
9
.
B
lo
w
e
r m
o
to
r
sp
e
e
d
s
e
le
ct
io
n
s a
re
fo
r a
ve
ra
g
e
c
o
n
d
itio
n
s,
s
e
e
in
st
a
lla
tio
n
in
st
ru
ct
io
n
s
fo
r d
e
ta
ils
o
n
o
p
tim
u
m
s
p
ee
d
se
le
ct
ion.
1
0
.
F
a
ct
o
ry
co
n
n
e
ct
e
d whe
n BVSS
(
C
h
im
n
ey
Ada
p
ter
Ac
ce
ss
o
ry
Ki
t)
is
n
o
t i
n
st
al
le
d.
11
.
F
ac
tory c
onn
ec
te
d
w
h
en
L
G
P
S
is
no
t
use
d.
1
2
.
Ig
n
itio
n
-lo
ck
o
u
t w
ill
o
cc
u
r a
fte
r fo
u
r c
o
n
se
cu
tiv
e
u
n
su
cc
e
ss
fu
l t
ria
ls
-f
o
r-ig
n
itio
n
.
C
o
n
tr
o
l w
ill
au
to
-rese
t
a
ft
er t
h
ree
hou
rs.
1
3
.
B
lowe
r-
on
d
e
la
y:
g
a
s he
at
in
g
2
5
s
e
co
nd
s,
c
o
o
lin
g or
hea
t pu
m
p
2
s
e
co
nd
s.
14
.
B
lo
w
e
r-
o
ff
delay: ga
s h
e
a
tin
g
se
le
ct
io
ns
are 9
0
,
12
0, 15
0 o
r
180
se
co
nd
s,
co
ol
in
g
or h
eat p
u
m
p
90
se
co
nds
or 5
se
co
nds
w
hen
J2
is
cu
t.
TRA
N
FS
E
LS
1
RED
RE
D
BL
U
RED
WH
T
BL
K
BL
K
WH
T
ID
M
HSI
WH
T
BL
K
2
1
PL
3
FR
S
1
11
EAC
-1
HS
IR
1
2
PL
2
ID
R
FUS
E O
R
C
IR
C
U
IT
BREAKE
R
&
DI
SCO
NNE
CT
SWI
T
C
H (
W
HE
N RE
Q
D
)
NO
T
E
#
2
GR
N
/Y
E
L
G
R
N/
YEL
GN
D
NOT
E
#
3
NO
T
E
#
6
WH
T
NO
T
E
#
5
GV
GR
N/
Y
E
L
RE
D
24
V
NO
T
E
#
1
1
PR
S
(W
H
E
N USE
D
)
LG
P
S
YEL
L2
NEU
TRAL
NO
T
E
#
1
1
GV
NEU
TRAL
NO
TE #8
B
H
T/
C
L
R
B
L
O
WER
MOTOR S
P
EED C
H
ANGE
REL
A
Y
,
SP
D
T
B
LWR
B
L
OWER
MOTOR R
E
L
A
Y
, SP
ST-
(N
.O
.)
B
LWM
B
L
OWER MOTOR, P
E
R
M
ANENT
-S
P
L
IT-
C
AP
AC
ITOR
B
V
S
S
B
L
OC
K
E
D
V
E
NT
SH
UT
OF
F
S
W
ITC
H
,
MANU
AL
-R
ESET
, S
P
ST
-(
N.C
.)
C
A
P
C
AP
AC
ITOR
C
P
U
M
IC
R
O
P
ROC
ESSOR AN
D
C
IR
C
UI
TR
Y
DS
S
D
RAF
T
SAF
E GU
ARD
S
W
IT
C
H
, AU
TO-
RESET
, SP
S
T
-
(N
.C
.)
EAC
-1
EL
EC
TRON
IC
AI
R C
L
EA
NER C
O
N
N
EC
TI
ON
(
1
1
5
V
A
C
1
.0
AMP
MAX.
)
EAC
-2
EL
EC
TRON
IC
AI
R C
L
EA
NER C
O
N
N
EC
TI
ON
(
C
OMM
ON)
F
R
S 1
, 2
F
L
A
M
E
ROL
L
O
UT S
W
.
-M
ANU
AL
RESET
, S
P
ST-
(N.C
.)
F
S
E
F
L
A
M
E
-P
ROV
ING EL
EC
T
R
ODE
F
U
1
F
U
S
E,
3
AM
P
,
AUTOM
OT
IV
E B
L
AD
E TY
P
E
,
F
A
C
T
ORY
I
N
ST
AL
L
E
D
F
U
2
F
U
S
E OR
C
IRC
U
IT
B
R
EAK
ER C
U
R
R
ENT INTERRU
P
T
D
E
V
IC
E
(F
IE
LD
I
N
S
T
A
LLE
D
&
S
U
P
P
LI
E
D
)
GND
EQU
IP
MENT GROU
ND
GV
GAS
V
A
LV
E-
REDU
NDAN
T
GV
R
GAS
V
A
LV
E REL
A
Y
,
SP
ST-
(N
.O.)
H
S
I
H
OT
S
U
R
F
A
C
E IG
N
ITER
(
115
V
A
C
)
H
S
IR
H
O
T
SU
RF
AC
E IGNITER REL
A
Y
,
SP
ST
-(
N.O.
)
H
U
M
2
4
V
AC
H
U
MI
D
IF
IER C
O
NNEC
T
IO
N
(
0
.5
AMP
. M
AX.)
ID
M
IND
UC
ED
DR
AF
T
MOTOR,
S
H
AD
ED-
P
O
L
E
ID
R
IND
UC
ED
DR
AF
T
MOTOR
REL
A
Y
, S
P
ST
-(
N.O.
)
IL
K
B
L
O
WER AC
C
E
SS P
ANEL
I
N
TERL
O
C
K
SWIT
C
H
,
S
P
ST-
(N.O.
)
J1
B
L
O
W
E
R
- O
F
F D
E
L
A
Y J
U
M
P
E
R
S
E
L
E
C
T
O
R
- H
E
A
T
IN
G
J2
B
L
O
W
E
R
- O
F
F D
E
L
A
Y J
U
M
P
E
R
- C
O
O
L
IN
G
JB
JU
N
C
T
IO
N
B
O
X
L
E
D
L
IG
H
T
-E
M
IT
T
ING D
IODE
F
O
R
ST
A
T
US C
O
D
E
S -
RED
L
G
P
S
L
O
W GAS P
R
ESSU
RE
SW
IT
C
H
, SP
S
T
-(
N
.O.)
NEUTRAL
BH
T/
C
L
R
CO
NNE
C
T
IO
N
DI
A
G
R
A
M
CO
O
L
H
EAT
T
EST
/T
W
IN
PC
B
NO
T
E
#
5
BLW
BL
W
R
DSS
FR
S
2
BVS
S
(W
HE
N US
E
D
)
N
O
T
E
#10
FR
S
1
FR
S
2
DS
S
BVS
S
LS
1
N
O
TE
#10
(W
H
E
N USE
D)
L 2
PRINTED CIRCIUT BOARD
PRINTED CIRCIUT BOARD
PL
1-
1
P
L1-
6
P
L1-
2
P
L1-
4
PL1
-3
PL1
-1
0
P
L1-
5
P
L1-
9
P
L1-
11
PL1
-7
P
L1-
8
SPAR
E 2
LS
2
(W
HE
N US
E
D
)
LS
2
(W
HE
N US
E
D
)
Y
RE
D
RED
RED
RED
ORG
ORG
J1
180
15
0
120
90
32
