48
*MVC8, *DVC8 W
IRING
D
IAGRAM
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
H
IG
H
V
O
LTA
G
E
!
D
IS
CO
NNE
CT
AL
L
PO
WER
BE
F
O
RE
SE
R
V
IC
IN
G
OR
IN
S
T
A
LLI
N
G
TH
IS
UNI
T
.
M
U
LTI
P
L
E
PO
WER
S
O
U
RCE
S
MA
Y
BE
PR
E
S
EN
T
. F
AIL
U
RE
TO
DO
SO
MA
Y
CAU
S
E
PR
O
P
E
R
T
Y
DAM
AG
E
,
P
E
RS
O
NAL
INJ
URY
OR
DE
AT
H
.
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
BURNER COMPARTMENT
POWER SUPPLY WITH
LINE
RD
TO
C
BK
RD
DISCONNECT POWER
IGNITER
FLAME SENSOR
INTEGRATED CON TROL MODULE
POWER BEFORE
BR
YL
TERMINAL
HI
BL
OR ORANGE
MVH (14)
PM
ECM MTR
HARNESS
NO
24 VAC
HI VOLTAGE FIELD
115kBTU MODELS
AUTO RESET PRIMARY
LIMIT CON TR OL
BEFORE SERVICING.
PS1 (2)
3
YL YELLOW
CIRCULATOR
BK
BR BROWN
BK
OVERCURRENT
24V HUM.
0140F01168-B
IGNITER
115 VAC/ 1
BLOWER COMPARTMENT
24
BK
PM
WH WHITE
BK
INDUCED
DRAFT
BLOWER
HUM-OUT
C
2
BL BLUE
115 VAC
INDUCTOR COIL
WH
YL
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
TO 115VAC/ 1
BK BLACK
DEHUM
INTEGRATED CONTROL MODULE
GND
24V HUM.
2
WH
HOT
SURFACE
IGNITER
MVC (8)
NEUTRAL
DOOR
LOW FIRE PRESS.
SWITCH
4
3
2
C
H
A
S
SI
S G
R
O
U
N
D
WH
VAC
GND
LOW VOLTAGE (24V)
2 CIRCUIT
CONNECTOR
HUM
HI VOLTAGE (115V)
OVERCURRENT
PSO (7)
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. SW TICH
INDOOR
HUMIDIFIER
Ø /60 HZ
PK PINK
N
BK
MANUAL RESET ROLLOU T
LIMI T CON TROLS
IND LO
40 VA
AUTO RESET AUXILIARY LIMI T
CONTR OLS
YL
JUNCTION
BLWR
PU PURPLE
CIRCULATOR
BLOWER
R
1
GND
JUNCTION BOX
SWITCH (TEMP.)
NEUTRAL
BLOWER
COMPARTMENT
DOOR SWITCH
(OPEN WHEN
DOOR OPEN)
C
LINE
BK
4
NEUTRAL
POLARIZED AND
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
$
C. USE COPPER CONDUCTORS ONLY.
RD
INTEGRATED CONTROL
PROT. DEVICE
HIGH FIRE
PRESSURE SWITCH
W 1
INTERNAL TO
NO
EQUIPMENT GND
MVL (13)
O
SERVICING. WIRING
WH
YL
ID BLOWER TWO-STAGE PRESSURE
SWITCH ASSEMBLY
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
WH
TRANSFORMER
MUST BE PROPERLY
BL
OR
OVERCURRENT PROTECTION DEVICE
GN
3
GROUNDED.
LOW VOLTAGE FIELD
W 2
WARNING:
FIELD GND
FIELD SPLICE
SWITCH (PRESS.)
WH
115
NEUTRAL
BLWR
J
U
N
C
TIO
N
BOX
GND
1
AND GROUNDED.
BK
GAS
VALVE
24
V THERMOSTAT
CONNE
CT
IONS
PU
INDUCTOR COIL
TH (4)
C
HI
1
24V HUM.
TO UNIT MUST BE
VAC
G
C
TR (11)
GR
GN GREEN
HOT SURFACE
FLAME
SENSOR
PS2 (12)
LOW FIRE
PRESSURE
SWITCH
1
INTEGRATED CONTROL MODULE
COLOR CODES:
L
4. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
YL
3
WIRING TO UNIT
NO
NEUTRAL
N
BR
WH
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
HEAT OFF D LY
24 V
3 A
BL
G
12
2
TRIM ENABLE
4
5
CIRCUI
T
CO
NNE
CT
O
R
4
C
IRCUIT
M
O
T
O
R
C
O
NNE
CT
O
R
DIP
S
W
IT
CHE
S
4
1
FUSE
15
6
TRIM %
5
HEAT AF
LINE
2
RD
DEHUM ENABLE
2
9
14
Y2
3
HUM
1
YL
NEUTRAL
11
EAC
T
WO-S
TAGE
INTEGRATED
CONTROL
MODUL
E
8
WH
24 V THERMOSTAT CONNECTIONS
W1
RD
R
BL
2
Y1
13
1
3
T-STAT
5
BR
BK
COOL PRFL
7
1
C
W2
3
FS
4
YL
YL
DIAGNOSTIC
LED'S
RD
O
DE
HUM
10
OR
SEE
NOTE 5
COOL AF
GN
RD
BL
BK
HUM
-
IN
HUM
-
OU
T
CONT FAN
HUM-IN
HUMIDIFIER
EAC
AUX
PU
SEE NOTE 6
6. HUMIDIFIER INSTALLATION OPTIONS: USE HUM TERMINAL TO RUN HUMIDIFIER DURING HEAT CALL
(COMMUNICATING OR LEGACY MODES). USE HUM-IN AND HUM-OUT TERMINALS TO RUN
HUMIDIFIER DURING HEAT CALL ( COMMUNICATING MODE OR LEGACY MODE) OR INDEPENDENTLY
FROM HEAT CALL (COMMUNICATING MODE ONLY - SETUP IS DONE WITHIN COMMUNICATING
THERMOSTAT)
AT LEAST 105
