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.
26
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
A
IR
B
LWR
RD
GY
BL
BK
HUMIDIFIER
GND
PROTECTION DEVICE
HEAT OFF
DELAY
B
URNER COMPARTMENT
24 V
3 A
BL
G
P
OWER SUPPLY WITH
L
INE
RD
12
TO
C
2
B
K
R
D
UNUSED
4
IGNITER
FLAME SENSOR
INTEGRATED CONTROL MODULE
BR
YL
TE
RMINAL
HI
BL
OR OR ANGE
MVH (14)
PM
ECM
MTR
H
ARNESS
NO
24 VAC
H
I VOLTAGE FIELD
115kBTU MODELS
D
IP SW
IT
C
H
ES
PS1 (2)
3
YL YELLO W
CIRCULATOR
BK
BR BROW N
4
B
K
OVERCURRENT
24V HUM.
0140F00606 REV. A
IGNITER
1
15 VAC/ 1
BLOWER COMPARTMENT
BK
PM
1
W H W HITE
BK
FUSE
15
EAC
C
2
BL BLUE
6
115 VAC
INDUCTOR COIL
W H
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 POW ER SUP PLY W ITH
ADJUST
TO 115VAC/ 1
BK BLACK
DEHUM
5
HEAT
LINE
IN
T
E
G
R
A
T
E
D
CO
NTRO
L
M
O
DU
L
E
GND
24V HUM.
2
WH
BK
MVC (8)
2
NEUTRAL
RD
W H
DOOR
LOW FIRE PRESS.
SWITCH
4
3
2
C
H
A
S
S
IS
GR
OU
N
D
W H
LOW VOLTAGE (24 V)
HUM
DEHUM
2
HI VOLTAGE (115 V)
PSO (7)
W H
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE
USED WHEN SERVICING.
ONLY
C
AIR CLEANER
HIGH FIRE
PRESS. SWTICH
INDOOR
HUMIDIFIER
PK PINK
WH
9
IND LO
14
Y2
40 VA
3
HU
M
YL
JUNCTION
BLWR
PU PURPLE
1
CIRCULATOR
BLOW ER
R
1
JUNCTION BOX
SW ITCH (TEMP.)
NEUTRAL
115kBTU MODELS
BLOWER
COMPARTMENT
DOOR SWITCH
(OPEN WHEN
DOOR OPEN)
C
LINE
YL
NEUTRAL
4
NEUTRAL
11
C
FS
2
PLUG C ONNECTION
EAC
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.
RD
INTEG RAT ED CONTROL
PROT. D EVICE
8
W H
ONLY
24 V THERMOSTAT CONNECTIONS
W1
W1
INTERNAL TO
70kBTU,90kBTU,
NO
EQUIPMENT GN D
MVL (13)
O
2ND STG DLY
W H
RD
YL
R
BL
2
5
GND (5)
BK
IND HI
IGN
PK
HLO (10)
70kBTU,90kBTU,
NOTES:
PU
AIR
Y1
Y1
GY GRAY
ELECTRONIC
RD RED
Y2
RD
NEUTRAL
1
HLI (1)
W H
SWITCH
NO
WH
TRANSFORMER
13
1
OR
3
OVERCURRENT PROTE CTION DEVICE
T-STAT
5
BR
BK
GN
3
LOW VOLTAG E FIE LD
W2
DELAY
7
FIELD GND
FIELD SPLICE
SW ITC H (PRESS.)
1
C
W2
W H
NEUTRAL
BLWR
JU
NC
T
ION
B
O
X
3
GND
FS
1
4
BK
GAS
VALVE
24
V T
H
ERM
O
STA
T
C
O
NN
ECTI
O
N
S
PU
INDUCTOR COIL
TH (4)
C
HI
1
2
4
V HUM
.
G
YL
C
TR (11)
YL
GR
GN GREEN
HOT SURFACE
PS2 (12)
1
IN
T
E
G
R
AT
ED
C
O
NT
R
O
L
M
O
D
U
L
E
COLOR CODES:
4. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO
N.E.C. AND LOCAL CODES.
YL
DIAGNOSTIC
LED'S
RD
O
3
DE
HU
M
10
OR
NO
NEUTRAL
SEE
NOTE 5
WH
COOL
ID
TO
MICRO
PU
AUTO RESET
AUXILIARY
LIMIT CONTROL
YL
1. SET HEAT ANTICIPATOR ON RO OM THERMOSTAT AT 0.7 AMPS.
FUSE 3 A
2
*MVC8***AA Models
