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WIRING DIAGRAMS
L1
C T1
R
C
S
HEAT
FC
EM
PCB
COOL
3
FS
F
4
5
IIC
3
6
8
9
7
10
12
11
R
G
W
Y1
TO THERMOSTAT
TERMINAL BLOCK
INSTALLER/SERVICEMAN
STATUS LIGHT
EQUIP. STATUS
ON
NORMAL OPERATION
NO POWER OR
OFF
1 BLINK
IGNITION FAILURE
OPEN ROLLOUT SWITCH
OPEN AUX. LIMIT SWITCH
PRESSURE SWITCH
2 BLINKS
3 BLINKS
WITHOUT INDUCER ON
4 BLINKS
OPEN LIMIT SWITCH
FALSE FLAME SENSED
5 BLINKS
COMPRESSOR
6 BLINKS
OUTPUT DELAY
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS
WARNING
UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
SUPPLY VOLTAGE
208-240/1/60
C
H
C
F
CM
PCB
LI
DI
2
1
TR
IGN
FS
LS
RS
ALS
GV
PS
C
LPS
HPS
3
2
Y2
S1
S2
C
1 4
CHECK
-
INTERNAL
CONTROL
GAS FLOW
GAS PRESSURE
OR
GAS VALVE
FLAME SENSOR
OR
FLAME ROLLOUT
BAD SWITCH
AUX. LIMIT OPEN
CHECK
PRESSURE SWITCH
OPEN
CHECK
PRESSURE SWITCH
MAIN LIMIT OPEN
BAD SWITCH
3 MIN. COMP.
DCG036-048XXXDXXXA*
L2
COMP ONENT LEGEND
AUXILLARY LIMIT SWITCH
ALS
COMP
COMPRESSOR
CM
CONDENSER MOTOR
C
CONTACTOR
L2
EM
EVAPORATOR MOTOR
F
FUSE
FS
FLAME SENSOR
GND
EQUIPMENT GROUND
GV
GAS VALVE
HPS
HIGH PRESSURE SWITCH
IIC
INTEGRATED IGNITION CONTROL
IGN
IGNITOR
LS
LIMIT SWITCH
LPS
LOW PRESSURE SWITCH
PLF
FEMALE PLUG/CONNECTOR
RUN CAPACITOR FOR CONDENSER FAN
RCCF
VM
PS
PRESSURE SWITCH
RS
ROLLOUT SWITCH
TB1
TERMINAL BLOCK (24V SIGNAL)
TR
TRANSFORMER
VM
VENT MOTOR
VMR
IIC
VENT MOTOR RELAY
BC
BLOWER CAPACITOR
NOTES
1. REPLACEMENT WIRE MUST BE THE SAME
SIZE AND TYPE OF INSULATION AS ORIGINAL.
(USE COPPER CONDUCTOR ONLY).
2. FOR 208 VOLT TRANSFORMER OPERATION
MOVE BLACK WIRE FROM TERMINAL 3 TO
TERMINAL 2 ON TRANSFORMER.
3. FOR DIFFERENT THAN FACTORY SPEED TAP.
CHANGE COOLING SPEED AT COOL
TERMINAL. CHANGE HEATING SPEED AT
HEAT TERMINAL ON CONTROL BOARD
3 SPEED MOTOR
RD - LOW SPEED
BK - HIGH SPEED
BL - MED. SPEED
4. ACCESSORY ECONOMIZER PLUG ADJACENT
6 9
TO BLOWER HOUSING IN RETURN AIR
5
COMPARTMENT. REMOVE MALE PLUG AND
ATTACH FEMALE PLUG TO ECONOMIZER
ACCESSORY.
SEE
5. USE COPPER CONDUCTORS ONLY.
NOTE 5
USE NEC CLASS 2 WIRE.
6. PURPLE WIRE CONNECTS TO TRANSFORMER
(PIN 1).
7. SPEED TAP TERMINATIONS SHOWN ON
DIAGRAM ARE REPRESENTATIVE, BUT ACTUAL
FACTORY SETTING MAY BE DIFFERENT BASED
ON HEATING VALUE AND CAPACITY OF UNIT.
8. TO RUN DIFFERENT SPEED FOR HEATING AND
COOLING, DISCONNECT GEEEN JUMPER FROM
"COOL" TERMINAL AND REPLACE WITH
APPROPRIATE SPEED TAP. THEN PLACE
DISCONNECTED END OF JUMPER ON
"UNUSED" TERMINAL LEFT OPEN BY MOVING
THE SPEED TAP.
9. FOR LOW STAGE OPERATION ONLY, REMOVE
WHITE JUMPER. FOR 2 STAGE OPERATION,
REMOVE JUMPER AND CONNECT W2 TO W1
ON THERMOSTAT.
SEE UNIT RATING PLATE FOR TYPE AND SIZE
OF OVERCURRENT PROTECTION.
208-240/1/60
FACTORY WIRING
LINE VOLTAGE
LOW VOLTAGE
OPTIONAL
HIGH VOLTAGE
FIELD WIRING
HIGH VOLTAGE
LOW VOLTAGE
WIRE CODE
BK BLACK
BL BLUE
BR BROWN
GR GREEN
OR ORANGE
PK PINK
PU PURPLE
RD RED
WH WHITE
YL YELLOW
BL/PK BLUE WITH PINK STRIP
YL/PK YELLOW WITH PINK STRIP
THERMOSTAT
FIELD WIRING
NO ECONOMIZER
W
G
R
Y1
Y2
C
TB1
WITH ECONOMIZER OPTION
W
G
R
Y1
Y2
C
TB1
2 STAGE COOLING
W
G
R
Y1
Y2
C
TB1
0140L02898-A
WH
W
GR
G
RD
R
YL
Y
BL
C
STAT
WH
W
GR
G
RD
R
YL
Y
BL
C
STAT
WH
W
GR
G
RD
R
YL
Y1
PK
Y2
BL
C
STAT
35
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