52
440 01 2021 01
13 .
Wiring Diagram
330710-101 REV
. B
NEUTRAL
INTERLOCK
SWITCH
TO 115VAC
FIELD DISCONNECT
EQUIPMENT
GROUND
N
N
N
N
N
N
3
2
1
N
HUM
HOT
IGNITION RELAY
P2
LOW/HIGH INDUCER
RELAY
INDUCER
RELAY
LOW/HIGH BLOWER
RELAY
HEAT/COOL
RELAY
M1
LO (R)
HEAT L
HEAT H
MLO (BL)
MHI (O)
HI (BK)
COOL
M2
PSC
BLOWER
MOTOR
BLOWER
RELAY
EAC
CONT FAN
DC MTR
XFMR
115VAC
TRANSFORMER
CAPACITOR
CAPACITOR
(SOME MODELS)
INDUCER MOTOR
LO
HI
P5
2
1
3
P4
1
2
IGNITER
P1-5
P1-1
P1-11
NOTE #8
P1-9
P1-10
24VAC
24VAC
COM
LOW PRESSURE
SWITCH
LP PRESS SW. (WHEN USED)
BVSS
(FIELD
INSTALLED)
HIGH
PRESS. SWITCH
P1-3
GAS VALVE
RELAY
P1-8
NOTE #3
SENSOR
P1-12
P1-4
P1-2
P1-6
PR
INTED
CIRC
UIT
BOARD
N
O
TE #
5
DEHUM
MAIN LIMIT
P1-7
FUSE 5A
NOTE #6
HIGH PRESS. SW. RELAY
COOL ON DELAY: 5 SEC
COOL OFF DELAY: 90 SEC
FURNACE CONTROL SW1 HEAT OFF DELAY
SW1-1, SW1-2
CONNECTION DIAGRAM
LADDER DIAGRAM
WARNING: ELECTRICAL SHOCK HAZARD
DISCONNECT BEFORE SERVICING
TR
A
N
S
F
O
R
M
E
R
3
2
1
2
1
BR
P5
NO
T
E
#3
P1
115V
AC
24V
AC
NO
T
E
#1
2
P2
1
DIAG NOS T IC
LE D
CO
L
O
R
CO
D
E
BL
A
C
K
BL
U
E
BR
O
W
N
GR
A
Y
G
R
EEN
/Y
EL
L
O
W
OR
A
N
G
E
RE
D
WH
IT
E
YE
L
L
O
W
SP
EED
TA
P
C
O
D
E
BL
A
C
K
H
I
OR
A
N
G
E
M
H
I
BL
U
E
M
L
O
RE
D
L
O
NOTE:
1. If any of the original equipment wire is replaced use wire rated 105º C.
2. Use only copper wire between the disconnect switch and the furnace
junction box.
3. This wire must be connected to furnace sheet metal for control to
prove flame.
4. Symbols are electrical representation only.
5. Solid lines inside circuit board are printed circuit board traces and are
not depicted as shown in the legend.
6. Replace only with a 5 amp fuse.
7. Blower motor speed selections are for average conditions, see
installation instructions for details on optimum speed selection.
8. Factory connected when LP Pressure Switch and BVSS (Chimney
Adapter Accessory Kit) are not installed.
9. Blower off-delay, gas heating selections are (60, 100, 140, and 180)
seconds, cooling or heat pump 90 seconds.
10. Ignition lockout will occur after four consecutive unsuccessful trials for
ignition. Control will auto-reset after three hours.
11. Blower motor and inducer motor contain internal auto-reset thermal
overload switches.
12. Flame sensor: 0.7 µA D.C. minimum, 2.0 - 4.0 µA nominal.
BK
BL
BR
GY
GR
N
/Y
O
R
W
Y
LOW
V
O
LT
A
G
E
F
A
C
T
OR
Y
LOW
V
O
LT
A
G
E
F
IE
L
D
LI
N
E
V
O
LT
A
G
E
F
A
C
T
OR
Y
LI
N
E
V
O
LT
A
G
E
F
IE
L
D
C
O
N
D
U
C
T
O
R O
N
C
O
N
T
RO
L
JU
N
C
T
IO
N
UN
M
A
R
K
E
D
T
E
R
M
IN
A
L
C
O
N
T
RO
L
T
E
RM
IN
A
L
140 S
E
C
.
60 S
E
C
.
100 S
E
C
.
180 S
E
C
.
1 S
T
AG
E
2 S
T
AG
E
HIGH STAGE
HEAT ON DELAY 30 SEC.
LOW STAGE
HEAT ON DELAY 45 SEC.
GY
BR
GR
N
/Y
R
ROLL
OUT SWIT
CH 1
T
O
2
IN SERIES DEPENDING
ON MODEL
MAIN LIMIT
R
R
B
V
SS
(W
H
E
N
U
S
E
D
)
SEN
S
O
R
LOW
P
R
ESSU
R
E
SW
IT
C
H
LP
P
R
E
S
S
U
R
E
S
W
IT
C
H
(L
P
M
O
D
E
LS
ON
LY
)
NO
T
E
#8
O
Y
W
GR
N
/Y
CA
P
A
CI
T
O
R
(S
O
M
E
M
O
D
E
L
S
)
IN
D
U
C
E
R
MO
T
O
R
CO
P
P
E
R
CO
N
D
U
C
T
O
R
S
ON
LY
HO
T
NE
U
T
R
A
L
GN
D
JU
N
C
T
IO
N
BO
X
IN
T
E
R
L
O
C
K
SW
IT
C
H
W
BK
C OM
LO
HI
W
W
BK
BK
R
BK
P4
HS
I
LO
HI
1
R
IG
N
IT
E
R
X F MR
DC
M
T
R
HUM
C ONT
F AN
E AC
C OOL
M2
M1
LO
HE AT
HI
HE AT
5-
A
M
P
NE UT R ALS
DE HUM
C AP AC IT OR
GR
N
/Y
BR
BR
PS
C
BL
O
W
E
R
MO
T
O
R
O
BK
R
W
W
BL
W
R
VS
P3
R
C W 2 W 1
G
Y
HUM
1
2 3
ON
O
FF
HE AT OF F -DE LAY
T HE R MOS T AT T Y P E
BL
L1
BL
CPU
1
2
3
4
5
6
24V
A
C
C
O
M
L1
(OPT)
R
W1
W2
Y
G
HUM
24 VAC
C
CO
N
T
R
O
L
BO
A
R
D
THERMOSTAT TYPE
SW1-3
R
O
LLOU
T
S
W
IT
C
H
1
T
O
3
IN
S
E
R
IE
S
D
E
P
E
N
D
IN
G
ON
M
O
D
E
L
BK
BK
BK
W
EAC + HUM 1.0A MAX
COMBINED
SW
1
SW
1
SW
1
SW
1
SW
1
SW
1
SW
1
NOTE #12
R
E
D
B
L
U
E
GAS
VALVE
MV
HI
C
NOT E #2
GAS
VALVE
MV
HI
C
1
P6
P6
HIGH
PRESS. SWITCH
24 V AC
Содержание *9MPT050F12
Страница 48: ...440 01 2021 01 48 ...