Fig.
19—Wiring
Diagram
for
Two-Stage
Non-Condensing
Furnaces
A02159
GV
HI
M
G
RN/
Y
E
L
C
NO
T
E
#3
BR
N
BL
U
BR
N
G
R
N
/YEL
RE
D
RE
D
RE
D
NO
T
E
#
11
FR
S
1
DS
S
BVS
S
LS
1
(W
HE
N
US
E
D
)
FR
S
2
NO
T
E
#1
2
OR
N
YEL
HS
I
L1
NO
T
E
#
2
GN
D
NE
UT
R
A
L
FU
2
FU
SE
O
R
C
IR
C
U
IT
B
R
EA
K
ER &
DI
SC
O
N
N
EC
T
SWI
TC
H
(
W
HE
N
R
EQ'
D
)
BL
K
IL
K
PL
5
JB
1
2
SEC
-1
LE
D
SEC
-2
FUSE
3-A
MP
PL
T
AC
R
D
J
0.5 A
MP
@ 24 VA
C
HUM
TEST/
TW
IN
ON
OF
F
3
2
1
DLY
OFF
LHT
W/
W
1
D
HUM
G
24
V
om
C
W
2
Y/
Y2
R
Y1
TR
A
N
L1
PR-1
EAC
-1
CA
P
OL
SPARE
- 1
BLW
R
BHT/CLR
BHI/LO
R
COOL
LO-HE
AT
HI-HE
AT
ST
AR
T
GR
N
/Y
E
L
BLWM
NEUT
RAL -
L2
EAC
-2
RE
D
BLU
OR
N
YEL
BLK
LO
ME
D
L
O
MED
HI
M
E
D HI
RE
D
BL
U
WH
T
WH
T
BR
N
BR
N
BLK
WH
T
BLK
WH
T
IH
I/L
O
R
HS
IR
ID
R
LO
HI
HSI
GR
Y
CO
NNE
C
T
IO
N
DI
A
G
R
A
M
BLK
1
HS
I
2
ID
M
1
2
3
HI
CO
M
LO
S
C
H
E
MA
T
IC DI
A
G
R
A
M
(N
AT
U
R
A
L
G
A
S & PR
O
PAN
E
)
ID
R
TO
1
1
5
VAC
FI
ELD-
DI
SCO
NNECT
SW
IT
CH
EQ
U
IP
M
EN
T
GR
O
U
N
D
1
2
3
HS
IR
IH
I/L
O
R
PL2
L2
L2
CA
P
OL
ST
AR
T
BL
W
M
CO
M
LO
ME
D
L
O
ME
D
HI
M
E
D HI
LO
H
EAT
SPA
R
E
-2
C
OOL
IN
G
SP
AR
E
-1
BH
I/LO
R
BH
T
/C
L
R
BL
W
R
EAC
-2
EAC
-1
TR
A
N
L2
L2
11
5V
AC
2
4
VAC
SEC
2
SE
C
1
PR
1
FU
1
NO
T
E
#6
FR
S
1
DS
S
BV
SS
FR
S
2
(W
H
E
N US
E
D
)
PL1
-8
GV
R
-2
HU
M
R
AC
R
P
L1-
12
HP
S
R
GV
LPS
NO
T
E
#
12
LG
P
S
(W
HE
N U
S
E
D
)
HP
S
HI
PL1
-2
P
L1-
4
P
L1-
3
PL1
-1
0
PL1
-5
W/
W1
CP
U
GV
R
-1
TE
S
T
/T
WI
N
DHU
M
W2
Y/
Y2
G
Y1
C
OM
2
4V
NO
T
E
#
3
C
M
P
L1-
1
LP
S
(W
H
E
N USE
D
)
LG
P
S
WH
T
FS
E
PL1
-9
PL1
-1
1
P
L1-
7
LEG
E
ND
AC
R
A
IR
C
O
NDI
TI
O
NI
NG R
E
LA
Y,
SP
ST
(N.O.
)
AC
RD
J
A
IR
C
O
NDI
TI
O
NI
NG R
E
LA
Y
D
ISAB
LE
J
U
MP
ER
B
H
I/
LO
R
B
LO
WER M
O
TO
R
SP
EED
C
H
ANGE
REL
A
Y,
S
P
D
T
B
H
T/
C
LR
B
LO
WER M
O
TO
R
SP
EED
C
H
ANGE
REL
A
Y,
S
P
D
T
B
LWR
B
LOWER M
O
TO
R
R
E
LA
Y,
SP
ST
-(
N.O.)
B
LWM
B
LOWER M
O
TO
R
,
P
E
R
M
AN
ENT-
SP
LI
T-
C
A
PA
C
ITOR
BV
SS
BLO
C
K
E
D
V
E
N
T S
H
U
TO
FF
S
W
IT
CH
, M
A
N
U
A
L-R
E
SE
T,
S
P
ST
-(
N
.C.
)
C
A
P
C
AP
AC
IT
OR
C
P
U
M
IC
R
O
P
R
OC
ESSOR AND C
IR
C
UI
TRY
DH
U
M
DH
U
M
CO
N
N
E
CT
IO
N
D
SS
D
RAF
T S
A
FE
GUA
R
D S
W
IT
C
H
,
AUT
O-
RESET
,
SP
ST
-
(N.C
.)
EA
C
-1
E
LEC
TR
ON
IC
A
IR
C
LEA
N
E
R
C
O
N
N
EC
TION
(
115
V
A
C
1
.0
A
M
P
M
A
X
.)
EAC
-2
EL
EC
TR
ONIC
AI
R C
LEANER C
O
N
N
EC
TION
(C
O
M
MON)
FR
S 1
, 2
FL
A
ME R
O
LL
OU
T
SW
. -
M
ANUAL
RESET
,
SP
ST-
(N
.C
.)
FS
E
FL
A
M
E
-P
ROV
IN
G
EL
EC
TR
OD
E
FU
1
FUS
E,
3
AMP
, AU
TOMOTI
V
E B
LADE T
Y
P
E
,
FA
C
TOR
Y
IN
ST
AL
LE
D
FU
2
FU
SE
OR
C
IRC
U
IT
B
R
EAK
E
R C
U
RRENT
INT
E
RRUP
T D
E
V
IC
E
(F
IE
LD
S
U
P
P
LI
ED AND I
N
ST
AL
LE
D)
GND
E
QU
IP
M
ENT GROU
ND
GV
GAS
V
A
LV
E
-R
E
DUN
DANT
GV
R
1
, 2
G
AS
V
A
LV
E
REL
A
Y,
DP
ST-
(N
.O
.)
H
P
S
H
IG
H
-H
E
A
T P
R
ESSU
RE
SW
IT
C
H
, SP
ST (N.O.
)
H
P
SR
H
IGH
-H
EA
T
P
R
ESSU
RE S
W
IT
C
H
REL
A
Y,
SP
ST (
N
.C
.)
H
SI
H
OT S
U
RF
AC
E IGNI
TER (
1
1
5
V
A
C
)
H
SIR
H
O
T S
U
RF
AC
E IGNI
TER REL
A
Y,
SP
ST (
N
.O
.)
H
U
M
2
4
V
AC
H
U
MI
DI
FI
ER C
O
NNEC
TI
ON
(0
.5
AMP
. MAX.
)
ID
M
INDU
C
ED DRAF
T MOTOR, SH
ADED-
P
O
LE
ID
R
INDU
C
E
D
DRAF
T
MOTOR REL
A
Y,
SP
ST-
(N.
O
.)
IH
I/
LO
R
INDU
C
ER M
O
TOR S
P
EED
C
H
ANGE
REL
A
Y, SP
DT
IL
K
B
LO
WER
AC
C
E
SS P
A
N
E
L INTERL
OC
K
S
W
ITC
H
, SP
ST-
(N
.O.)
JB
JU
N
C
TI
O
N
B
O
X
LE
D
LI
G
H
T-
E
MI
TTING
D
IODE F
O
R
ST
A
TU
S C
O
DES
-
AMB
ER
LG
P
S
LO
W GAS
P
R
ES
SURE SWI
TC
H
,
SP
ST-
(N.O.
)
LP
S
LOW-
H
E
A
T
P
R
ESS
U
RE SWITC
H
,
SP
ST (
N
.O.)
LS
1
, 2
LIMI
T S
W
IT
C
H
, AU
TO-
R
ESET
, SP
ST
(
N
.C
.)
OL
AU
TO-
R
ESET INTERNA
L M
OTOR OV
ERL
OAD
TEM
P
E
R
A
TU
RE SWI
TC
H
(
N
.C
.)
P
C
B
P
RIN
TED
C
IRC
U
IT
B
O
ARD
C
O
NTROL
PL1
12
-C
IR
C
U
IT
PC
B CO
N
N
E
C
TO
R
P
L2
3
-C
IR
C
U
IT P
C
B H
SI
& ID
M
C
O
N
N
EC
TOR
P
L3
6
-C
IR
C
U
IT IC
M M
O
TO
R
C
O
NN
EC
TOR
(N
OT SH
OWN)
P
L4
3
-C
IR
C
U
IT ID
M
C
O
N
N
E
C
TOR
P
L5
2
-C
IR
C
U
IT H
SI
C
O
N
N
E
C
TOR
PL
T
3
-C
IR
C
U
IT
F
A
CT
O
R
Y
T
E
ST
CO
N
N
E
CT
O
R
TR
A
N
TR
A
N
SF
O
R
M
E
R
, 115V
A
C
/24V
A
C
TES
T/
TWI
N
C
O
M
P
O
N
ENT TEST
& TW
IN
NING
TERM
INAL
JU
N
C
TI
O
N
UNM
ARK
ED T
E
RMI
N
AL
P
C
B
C
O
N
TROL
T
E
RM
IN
AL
FA
C
TO
R
Y
P
O
W
E
R
W
IR
IN
G
(
115V
A
C
)
FA
CT
O
R
Y CO
N
TR
O
L W
IR
IN
G
(2
4
V
A
C
)
FI
EL
D C
O
NTROL
WI
RING (
1
1
5
V
A
C
)
FI
EL
D C
O
NTROL
WI
RING (
2
4
V
AC
)
C
O
NDU
C
TOR ON
C
O
N
TROL
P
C
B
FI
EL
D W
IR
ING
SC
REW
TERMI
N
A
L
FI
E
LD
E
A
R
TH G
R
O
U
N
D
EQU
IP
M
ENT
GROU
ND
FI
E
LD
S
P
LI
C
E
P
LU
G
REC
EP
TA
C
LE
PC
B
PL1
-6
L1
NO
T
E
#10
L2
PL
4
PL
5
WH
T
G
R
N
/YEL
WH
T
RE
D
BL
K
ID
M
CO
M
LO
PL4
1
3
2
H I
WH
T
RE
D
BLK
PL
2
ID
M
NO
TE #8
1 AM
P
@ 115
VA
C
STATUS C
O
D
E
FU1
NO
TE #6
PL
1
1
SELE
C
T
C
H
AR
T
SW
LO
-H
T
ON
L
Y
BL
O
W
E
R
O
FF-
D
E
L
A
Y
ON
OF
F
1
ON
L
Y
HE
A
T
LO
H
EAT
NO
R
M
2
3
90
SEC
.
ON
OFF
1
2
3
120
SEC
.
ON
OFF
2
3
150
SEC
.
ON
OF
F
2
3
180
SE
C
.
HP
S
FA
C
T
O
R
Y
S
E
TT
IN
G
S
BLW
HI
HE
A
T
NO
T
E
#
11
NO
T
E
#
5
*
*
*
SPA
RE
-2
FS
E
RE
D
ACRDJ
327561-
101 R
E
V
. E
1
.
If
a
n
y o
f th
e
o
ri
g
in
al
e
q
ui
pment
wi
re
i
s
r
e
p
lace
d us
e w
ir
e
r
a
te
d
fo
r 1
0
5
∞
C.
2
.
U
s
e
onl
y
coppe
r w
ire
bet
w
e
e
n
t
h
e
di
s
c
onne
ct
s
w
it
c
h
and
the
f
urna
c
e
j
unct
ion box
(J
B
).
3.
T
h
is
w
ir
e
m
u
s
t
b
e
c
o
nn
ec
te
d
to
fu
rn
ace
sh
e
e
t m
e
ta
l f
o
r
con
tr
o
l t
o
pr
o
v
e
f
lam
e.
4.
S
y
m
b
o
ls a
re
ele
ct
rica
l r
e
p
re
sen
ta
ti
o
n
o
n
ly.
5
.
Sol
id
l
ine
s
i
n
s
ide PC
B
a
re
pr
in
te
d ci
rc
ui
t boa
rd
co
ndu
ctor
s a
n
d a
re not
in
cl
ude
d
in
the l
e
gend
.
6
.
R
e
p
lace
onl
y
wi
th a 3
amp f
u
se
.
7.
B
lo
w
e
r m
o
to
r (B
LW
M
)
an
d
in
d
u
c
e
r m
o
to
r
(I
D
M
) c
o
nt
ain
in
ter
n
a
l au
to
-r
e
set
t
h
er
m
a
l o
v
e
rl
o
ad
s
w
it
ch
es
(
O
L
).
8
.
N
e
u
tr
a
l con
nec
ti
o
n
s
a
re
int
e
rc
hang
eab
le
w
it
h
in
t
h
e
N
E
U
T
R
A
L
conn
ect
or
b
lo
c
k
.
9
.
B
low
er mot
o
r spe
e
d
s
e
le
c
ti
ons
are
f
o
r a
v
e
ra
g
e c
o
ndi
ti
o
n
s
,
s
e
e
i
n
st
al
la
ti
o
n
ins
truc
ti
ons
for
opt
im
um
s
e
le
c
ti
on.
1
0
.
F
a
c
to
ry
s
h
ip
p
e
d
wit
h
BL
UE
wir
e
(
M
ED
L
O
) if
O
RANG
E w
ir
e
n
o
t p
re
s
e
n
t.
1
1
.
Fa
c
tor
y c
onne
c
ted w
h
e
n
B
VSS (C
hi
mne
y
A
d
a
p
ter
K
it)
i
s
not i
n
s
tal
le
d.
1
2
.
Fa
c
tor
y c
onne
c
te
d whe
n
LG
PS is
not
us
e
d
.
1
3
.
Ig
n
it
ion
lo
cko
u
t
w
il
l occ
ur
af
te
r f
our co
ns
ec
uti
v
e
unsu
c
ces
sf
ul
tri
a
ls
-f
o
r-
igni
ti
on.
C
o
ntr
o
l w
il
l
a
u
to
-r
es
et
a
ft
e
r
th
ree h
o
ur
s.
1
4
.
B
low
er-
on de
la
y
: gas
hig
h
-h
ea
t 2
5
se
co
nds,
ga
s l
o
w-
he
at 4
5
s
e
c
o
nd
s, c
ool
ing or
he
a
t pump 2 s
e
c
o
nd
s.
1
5
.
B
low
er of
f-d
e
lay
: gas
hea
ti
ng s
e
le
c
tions
ar
e 9
0
, 1
2
0
, 150
,
1
8
0
s
e
co
nds,
c
ooli
n
g or hea
t
pum
p
90
sec
onds
or
5
se
co
nds wh
e
n
D
H
U
M
i
s
act
ive
.
NOT
E
S
:
PRINTED CIRCIUT BOARD
PRINTED CIRCIUT BOARD
RE
D
LS
2
(W
HE
N
US
E
D
)
LS
2
(W
HE
N U
S
E
D
)
LS
1
IL
K
L1
—24—
