*MVC8_AA WIRING DIAGRAM
2 1 
BK
WH
| 24V HUM. |
| YL |
C | C |
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NO | NO |
YL
HI 3 | WH |
C2 
PM 1 
YL
JUNCTION BOX
BK
TO
115 VAC/ 1
POWER SUPPLY WITH PROTECTION DEVICE
WH
TO 115VAC/ 1 Ø /60 HZ POWER SUPPLY WITH OVERCURRENT PROTE CTION DEVICE
GND
UNIT. | MAY |
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SERVICING OR INSTALLING THIS | MAYBE PRESENT. FAILURE TO DO SO | PERSONALINJURY OR DEATH. |
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| BURNER COMPARTMENT |
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BLOWER COMPARTMENT | AUTO RESET | PU |
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| AUXILIARY |
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| LIMIT CONTROL |
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| RD |
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| 24 | V THERMOSTAT CONNECTIONS |
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| FUSE | BR | BL |
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RD WH | O DEHUM | G W1 W2 Y1 Y2 | 2 R C | 1 |
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| 24 V |
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| 3 A |
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BK | DIAGNOSTIC | SEE |
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NOTE 5 |
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LED'S |
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INTEGRATED CONTROL MODULE
DOOR
SWITCH
JUNCTION BOX
INDUCTOR COIL 70kBTU,90kBTU,
115kBTU MODELS |
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ONLY | INDOOR |
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| AIR |
| CIRCULATOR |
| BLWR |
LINE |
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EAC | ELECTRONIC |
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| AIR CLEANER |
| IND HI |
| ID |
| BLWR |
| IND LO |
HUM | HUMIDIFIER |
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IGN |
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| HOT SURFACE |
FS | IGNITER |
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DISCONNECT
GND |
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NEUTRAL |
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NEUTRAL | INTEGRATED |
NEUTRAL | |
NEUTRAL | CONTROL |
NEUTRAL | MODULE |
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BK WH
2ND STG DLY
HEAT OFF
DELAY
DIP | UNUSED |
SWITCHES | DEHUM |
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6 5 4 RD
9 8 7 YL
12 | 11 | 10 | RD |
15 | 14 | 13 | BR |
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| BL |
FLAME SENSOR |
LINE |
| 115 VAC | NEUTRAL |
FUSE 3 A |
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| 40 VA |
TH (4) |
| TRANSFORMER | |
R |
| 24 VAC |
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1
2
3
4
HEAT |
DELAY |
ADJUST |
COOL |
YL
WH
BL
24V |
| TO +VDC |
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Y1 | HLO (10) |
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THERMOSTAT |
| PSO (7) |
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| LOW FIRE PRESS. | ||
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| 24V HUM. | SWITCH | ||
W1 | PS1 (2) | C | |||
NO | |||||
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1
OR
LINE
BK 
CONNECTIONS | W2 | NO |
PS2 (12) |
| TO | C | |
Y2 | MICRO | ||
HIGH FIRE | |||
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2
3
FS
PRESS. SWTICH |
G |
WH 4
WH5
RD |
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ECM M TR | BL |
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HARNESS |
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| GY |
BK |
| 4 |
| 3 | |
| 2 | |
1 |
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EAC
NEUTRAL
HUM
B
5 | BK |
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3 | GR WH |
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4 |
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2 | PK | GND |
1 |
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WH
BK 
K 
WH
BK
BLOWER COMPARTMENT DOOR SWITCH (OPEN WHEN
24V HUM.
OHLI (1)
DEHUM | MVL (13) | |
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| MVH (14) | |
C | MVC (8) | |
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| GND (5) | |
| TR (11) | |
TO | GND (4) | |
R | ||
+ VDC (1) | ||
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| RX (2) | |
TO | TX (3) | |
MICRO | ||
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PM
HI
C
GAS
VALVE
GND
INDOOR
AIR
CIRCULATOR
BLWR
CIRCULATOR BLOW ER
INDUCTOR COIL 70kBTU,90kBTU, 115kBTU MODELS
DOOR OPEN)
INTEGRATED CONTROL MODULE
ONLY
HUMIDIFIER
NOTES:
1.SET HEAT ANTICIPATOR ON RO OM THERMOSTAT AT 0.7 AMPS.
2.MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
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.
4.UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
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)
0140F00606 | REV. A |
COLOR CODES:
PK PINK
BR BROW N
WH WHITE BL BLUE GY GRAY RD RED YL YELLOW OR OR ANGE PU PURPLE GN GREEN BK BLACK
LOW VOLTAGE (24 V)
LOW VOLTAGE FIE LD
HI VOLTAGE (115 V)
HI VOLTAGE FIELD JUNCTION TERMINAL
INTERNAL TO INTEGRATED CONTROL
PLUG CONNECTION
EQUIPMENT GND
FIELD GND
FIELD SPLICE
SWITCH (TEMP.) IGNITER
SWITCH (PRESS.)
OVERCURRENT PROT. D EVICE
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most
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