HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS
UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
27
WIRING DIAGRAMS
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
TO +VDC
TO
MICRO
TO
R
GND (4)
+ VDC (1)
RX (2)
TX (3)
CIRCULATOR
INDOOR
AIR
BLWR
RD
GY
BL
BK
PROPERLY POLARIZED
HUMIDIFIER
GND
PROTECTION DEVICE
HEAT OFF
DELAY
BURNER COMPARTMENT
24 V
3 A
BL
POWER SUPPLY WITH
LINE
12
TO
C
2
BK
RD
UNUSED
DISCONNECT POWER
4
IGNITER
FLAME SENSOR
INTEGRATED CONTROL MODULE
POWER BEFORE
YL
TERMINAL
HI
OR ORANGE
MVH (14)
CO
NN
E
C
T
O
R
PM
ECM MTR
HARNESS
NO
24 VAC
HI VOLTAGE FIELD
115kBTU MODELS
AUTO RESET PRIMARY
LIMIT CONTROL
BEFORE SERVICING.
RD
PS1 (2)
3
YL YELLOW
CIRCULATOR
BK
BR BROWN
4
BK
OVERCURRENT
24V HUM.
0140F00660 REV. A
IGNITER
115 VAC/ 1
BLOWER COMPARTMENT
24
BK
PM
1
WH WHITE
FUSE
15
INDUCED
DRAFT
BLOWER
EAC
C
3
BL BLUE
6
115 VAC
INDUCTOR COIL
WH
GND
5. TO RECALL THE LAST 6 FAULTS, MOST RECENT TO LEAST
RECENT, DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE
IN STANDBY (NO THERMOSTAT INPUTS)
Ø /60 HZ POWER SUPPLY WITH
ADJUST
TO 115VAC/ 1
BK BLACK
DEHUM
5
HEAT
LINE
GND
24V HUM.
2
BK
HOT
SURFACE
IGNITER
MVC (8)
2
NEUTRAL
RD
WH
DOOR
LOW FIRE PRESS.
SWITCH
4
3
2
WH
VAC
GND
LOW VOLTAGE (24V)
2 CIRCUIT
CONNECTOR
HUM
DEHUM
2
HI VOLTAGE (115V)
OVERCURRENT
PSO (7)
WH
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE
USED WHEN SERVICING.
ONLY
C
AIR CLEANER
TWO STAGE
GAS VALVE
(HONEY WELL)
DISCONNECT
HIGH FIRE
PRESS. SWTICH
INDOOR
HUMIDIFIER
Ø /60 HZ
PK PINK
N
9
MANUAL RESET ROLLOUT
LIMIT CONTROLS
IND LO
14
40 VA
AUTO RESET AUXILIARY LIMIT
CONTROLS
HU
M
YL
JUNCTION
BLWR
PU PURPLE
1
CIRCULATOR
BLOWER
R
1
GND
JUNCTION BOX
SWITCH (TEMP.)
NEUTRAL
115kBTU MODELS
BLOWER
COMPARTMENT
DOOR SWITCH
(OPEN WHEN
DOOR OPEN)
C
LINE
BK
YL
NEUTRAL
4
NEUTRAL
POLARIZED AND
11
C
FS
2
PLUG CONNECTION
DISCONNECT
PU
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE
FURNACE MUST BE REPLACED, IT MUST BE REPLACED WITH
WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT
LEAST 105 C. USE COPPER CONDUCTORS ONLY.
IN
T
E
G
R
A
T
E
D
CO
N
T
RO
L
MO
D
U
L
E
RD
INTEGRATED CONTROL
PROT. DEVICE
8
HIGH FIRE
PRESSURE
SWITCH
WH
ONLY
24 V THERMOSTAT CONNECTIONS
W1
INTERNAL TO
70kBTU,90kBTU,
NO
EQUIPMENT GND
MVL (13)
O
SERVICING. WIRING
2ND STG DLY
WH
RD
YL
ID BLOWER TWO-STAGE PRESSURE
SWITCH ASSEMBLY
BL
5
GND (5)
BK
IND HI
IGN
PK
HLO (10)
70kBTU,90kBTU,
NOTES:
PU
L
AIR
WH
MANUAL RESET ROLLOUT LIMIT
CONTROLS
Y1
GY GRAY
ELECTRONIC
RD RED
Y2
RD
NEUTRAL
1
HLI (1)
WH
SWITCH
AUTO RESET PRIMARY
LIMIT CONTROL
NO
TRANSFORMER
MUST BE PROPERLY
13
BL
3
OVERCURRENT PROTECTION DEVICE
T-STAT
5
BR
BK
2
GROUNDED.
LOW VOLTAGE FIELD
W2
DELAY
WARNING:
7
FIELD GND
FIELD SPLICE
SWITCH (PRESS.)
W2
WH
115
NEUTRAL
BLWR
3
GND
FS
1
AND GROUNDED.
4
GAS
VALVE
PU
INDUCTOR COIL
TH (4)
C
HI
2
4
V
H
U
M
.
TO UNIT MUST BE
VAC
G
YL
C
TR (11)
YL
GR
GN GREEN
HOT SURFACE
FLAME
SENSOR
PS2 (12)
LOW FIRE
PRESSURE
SWITCH
1
COLOR CODES:
L
4. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO
N.E.C. AND LOCAL CODES.
DIAGNOSTIC
LED'S
RD
3
10
WIRING TO UNIT
OR
NO
NEUTRAL
N
SEE
NOTE 5
BR
COOL
40 VA
TRANSFORMER
ID
TO
MICRO
WARNING:DISCONNECT
PU
AUTO RESET
AUXILIARY
LIMIT CONTROL
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
FUSE 3 A
2
2
4
V
T
H
E
R
M
O
S
T
A
T
C
O
N
N
E
C
T
IO
N
S
5 C
IRC
UI
T
C
O
NN
E
C
T
O
R
E
A
C
BK
4
CIR
CUI
T
M
O
T
O
R
3
T
W
O
-S
T
A
G
E
1
DE
H
U
M
YL
YL
WH
R
IN
T
E
G
R
A
T
E
D
C
O
N
T
R
O
L
M
O
D
U
L
E
GN
W1
JUNC
T
IO
N
B
O
X
WH
OR
BL
CHA
S
S
IS
G
R
O
UND
BK
IN
T
E
G
R
A
T
E
D
C
O
N
T
R
O
L
M
O
D
U
L
E
G
Y2
O
2
1
YL
BR
WH
DI
P
S
W
IT
CH
E
S
Y1
WH
RD
1
C
*MVC8***AB, *DVC8***AA Models
