79
FIGURE 48
FOR MODELS WITH UT ELECTRONIC CONTROLS 1028-928 INTEGRATED FURNACE CONTROL AND DIRECT SPARK IGNITION
NOTESCOMPONENT CODES
WIRE COLOR CODE
BK......BLACK
BR......BROWN
BL.......BLUE
G........GREEN
GY......GRAY
O........ORANGE
PR......PURPLE
R........RED
W.......WHITE
Y........YELLOW
WIRING INFORMATION
WARNING
-CABINET MUST BE PERMANENTLY GROUNDED
AND CONFORM TO I.E.C., N.E.C., C.E.C.,
NATIONAL WIRING REGULATIONS, AND LOCAL
CODES AS APPLICABLE.
REPLACEMENT WIRE
-MUST BE THE SAME SIZE AND TYPE
OF INSULATION AS ORIGINAL (105C. MIN.)
-FIELD INSTALLED
-FACTORY STANDARD
LOW VOLTAGE
-FIELD INSTALLED
-FACTORY OPTION
-FACTORY STANDARD
LINE VOLTAGE
ORIGINAL RELEASE
NO.:
ELECTRICAL WIRING DIAGRAM
MODELED
BY:
CHECKED:APPROVED:
REV:PART NO.:
DATE:
JUMPER USED IN PLACE OF PFC
ON 1/2 HP MOTOR MODELS
L
N
UPFLOW - HORIZONTAL
BLOWER INDUCED DRAFT
TWO STAGE 80 PLUS ECM
GAS FIRED, FORCED AIR FURNACE
W/ ECM MOTOR & ECO NET
90-104961-07 00
G-1021S044
8-5-14
JHB
2 STAGE ECM
IFC 80+
= CHASIS GROUND
= EARTH GROUND
BLWR BLOWER RELAY HUM HUMIDIFIER OUTPUT PL PLUG
C COMMON IBM INDUCED BLOWER MOTOR PS PRESSURE SWITCH
CC COOLING CONTACTOR IDM INDUCED DRAFT MOTOR RC RUN CAPACITOR
CT CONTROL TRANSFORMER IDR INDUCED DRAFT RELAY SE SPARK ELECTRODE
DISC DISCONNECT SWITCH IFC INTEGRATED FURNACE CONT TM THERMISTOR
EAC ELECT. AIR CLEANER OUTPUT LC LIMIT CONTROL WS WATER SENSOR
FLMS FLAME SENSOR LGV LOW GAS VALVE WIRE NUT
FR FAN RELAY LPC LOW PRESSURE CONTROL
FU FUSE M MAIN
GND GROUND MC MEMORY CARD
GVC GAS VALVE COMMON MGV MAIN GAS VALVE
GVR GAS VALVE RELAY MRLC MAN. RESET LIMIT CONTROL
HALC HEAT ASSISTED LIMIT CONTROL NEU NEUTRAL
ACR HEAT/COOL RELAY NPC NEGATIVE PRESSURE CONT.
HGV HIGH GAS VALVE PBS PUSH BUTTON SWITCH
HPC HIGH PRESSURE CONTROL PFC POWER FACTOR CHOKE
FLAME SENSOR
FLMS
3-PIN
CONNECTOR
PL-9
(MAIN LIMIT
CONTROL)
OVERTEMP. SWITCHES
5-PIN
CONNECTOR
PL-7
5-PIN
CONNECTOR
PL-6
100K, 125K MODELS
50K AND 75K MODELS
EMPTY
EMPTY
R
BK
W
IDM
4-PIN
CONNECTOR
PL-7
4-PIN
CONNECTOR
PL-6
R
BK
W
EMPTY
LPC
PR/BK
PR
PR/W
R/W
R/G
MRLC MRLC
R
PR
HPC
R
R/G
LC
R/BK
BL
Y
W
MAIN
GAS
VALVE
3
2
1
O
SE
GND
O
TWIST-LOCK
GROMMET
7-PIN
CONNECTOR
PL-2
TO P-2
TO PS
TO HPC
TO MRLC
TO GVC
TO LGV
TO MGV
TO FLMS
TO LC
PR
PR/W
R/G
Y
W
BL
O
R/BK
R
BK
CT
Y
W
5-PIN
CONNECTOR
PL-1
TO P-1
Y
R
R
Y
Y
IBM
R
Y/PK
O/W
BR
4-PIN CONNECTOR
PL-13 TO IBM
4-PIN CONNECTOR
PL-12 TO IFC P5
SEE INSTALLATION
INSTRUCTIONS TO
WIRE THERMOSTAT
BK
BK
BK
G
W
GND
5-PIN
CONNECTOR
PL-16 TO
IBM
PL-14
PL-15
BK
BK
BK
BK
PFC
W
W
W
W
4-PIN
CONNECTOR
PL-4
TO P-4
ON IFC
3-PIN
CONNECTOR
PL-3
TO P-3
ON IFC
3-PIN
CONNECTOR
PL-18
G
W
TO IDM
TO IDM
TO IDM
TO LPC
TO LC
PR/BK
R/W
R
BK
W
SEC
COM
P1
P2
P3
P4
P5
NEU
L1
W
BK
BK
BK
G
TO GND
GND
3-PIN
CONNECTOR
PL-5
G
G
BK
POWER
SUPPLY
TO 115/1/60
PBS
(BLOWER DOOR
SWITCH)
IN DOOR BRACKET
J - BOX
DISC
FU
SUPPLY AIR
SENSOR
CONTROL VOLTAGE
24 VAC
LINE VOLTAGE
115 VAC
SE
GND
IGNITER VOLTAGE
SPARK IGNITER
P2-5
P2-4
P2-6
HGVR
GND
TO FURNACE
CABINET
GND
GND
HIGH
LOW
2-STAGE
GAS VALVE
P1-4
S/A SENSOR
W1
W2
Y1
Y2
G
C
R
B
HUM-STAT
P4-1
FUSE
24VAC
P4-2
P4-4
P2-3
P1-1
P1-3
P1-5
P2-1
P2-2
MRLC MRLC
LC
HPC
LGVR
LPC
P4-3
COM
120VAC
NEUTRAL
NEUTRAL
V
TX
RX
C
P5-1
P5-2
P5-3
P5-4
IBM
POWER
NEUTRAL
120VAC
120VAC
EAC
RELAY
EAC
120VAC IN
PBS
GND
PFC
J-BOX
P1-2
P1-4
NEUTRAL IN
IDR
NEUTRAL
HUMIDIFIER
P3-1
P3-2
P3-3
LOW SPEED
HIGH SPEED
EARTH
GND
IDM
RC
P2-7
FLMS
HALC
HEATER
HALC
CONTACTS
BURNER COMPARTMENT
BLOWER COMPARTMENT
HALC
R/B
R/B
Y
O
$0/530-
N
L
W
IDM
SPARK
IGNITER
T1
1
2
3
4
5
1
2
3
4
EMPTY
EMPTY
To Next Page
Loading...
Need help?
General
