Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
PLM2
L1PB L2 L3
GND
6A
4
BL
RD
BK
OR
GY
BK
OR
0140L07174
TR1
COM
CB
GR
R2 R1
t = 180s
Y2 Y1
TON2
R2 R1
t = 180s
Y2 Y1
TON1
CC1
A1 A2
YL
BL
CC2
A1 A2
PU BL
TB2
A B C
D
S1 S2 R C G W1 W2 Y1 Y2 OTB1
BC BLOWER CONTACTOR
BM BLOWER MOTOR
BR BLOWER RELAY
CC COMPRESSOR CONTACTOR
CCH CRANKCASE HEATER
CCX COMPRESSOR CONTACTOR AUXILIARY
CM CONDENSER MOTOR
COMP COMPRESSOR
EBTDR ELECTRONIC BLOWER TIME DELAY
ECON ECONOMIZER
EHK ELECTRIC HEATER KIT
ES EMERGENCY SHUTDOWN
FB FUSE BLOCK
FC FAN CAPACITOR
FPS FREEZE PROTECTION SWITCH
GND EQUIPMENT GROUND
HPS HIGH PRESSURE SWITCH
LPS LOW PRESSURE SWITCH
MAT MIXED AIR TEMPERATURE SENSOR
PB POWER DISTRIBUTION BLOCK
PL
F FEMALE PLUG/CONNECTOR
PLM MALE PLUG/CONNECTOR
PS PRESSURE SWITCH
TB TERMINAL BLOCK
TON TIME DELAY RELAY (ON)
TR TRANSFORMER
RD
RD
RD
POWER AND CONTROLS WIRING DIAGRAM
DBC 090 - 150
LINE VOLTAGE:
208-230/460/575V/3PH/60HZ
RD
PU
BL
YL
BK BLACK
BL BLUE
BL/PK BLUE WITH PINK STRIPE
BR BROWN
GR GREEN
GY GRAY
OR ORANGE
PK PINK
PU PURPLE
RD RED
TN TAN
WH WHITE
YL YELLOW
YL/PK YELLOW WITH PINK STRIPE
YL
YL
L1 T1
BC 1
RD
BL
L2 T2
YL
L3 T3
7
PU
YL
RD
REPLACEMENT WIRE MUST BE SAME SIZE AND TYPE OF INSULATION AS ORIGINAL (AT LEAST 105° C). USE COPPER CONDUCTORS ONLY.
USE N.E.C. CLASS 2 WIRE FOR ALL LOW VOLTAGE FIELD CONNECTIONS.
IF OPTIONAL ECONOMIZER IS INSTALLED, REMOVE ECON PLM JUMPER AND PLUG IN NEW HARNESS FROM ECONOMIZER KIT.
IF OPTIONAL ELECTRIC HEAT IS INSTALLED, PLUG IN NEW HARNESS FROM ELECTRIC HEATER KIT. FOR TWO STAGE HEAT REMOVE JUMPER.
TR1 PRIMARY (HI
GH VOLTAGE) CONNECTIONS: ORANGE WIRE CONNECTED TO 240/460/575V TAP AT THE FACTORY AND BLACK WIRE TO COM TERMINAL.
FOR 208V SUPPLY POWER, MOVE ORANGE WIRE FROM 240V TAP TO THE 208V TAP.
FUSE BLOCKS ARE OPTIONAL
IF OPTIONAL OEM SAFETY EQUIPMENT SUCH AS PHASE MONITOR, FLOAT SWITCH OR SMOKE DETECTOR ARE INSTALLED, UNPLUG JUMPER PLUG AND PLUG IN SAFETY DEVICE.
IF MULTIPLE SAFETIES ARE INSTALLED, PLUG IN THE ADDITIONAL DEVIC
ES IN SERIES. PLUG IN JUMPER PLUG AT THE LAST SAFETY DEVICE INSTALLED.
IF A THIRD PARTY SAFETY DEVICE IS FIELD INSTALLED, CUT THE RED WIRE ON THE JUMPER PLUG AND WIRE A NORMALLY CLOSED DRY CONTACT IN SERIES WITH THE CUT WIRE.
24 VAC ALARM OUTPUT FROM OPTIONAL ECONOMIZER CONTROL MODULE.
IF OPTIONAL FREEZESTAT IS INSTALLED, REMOVE FPS PLM JUMPER AND PLUG IN FREEZESTAT HARNESS.
IF OPTIONAL CRANKCASE HEATER KIT IS INSTALLED, ST
ANDARD ON 12.5 TON. SEE USER MANUAL FOR INSTALLATION INSTRUCTIONS.
ALTERNATE BLOWER MOTOR WIRING FOR 12.5 TON UNITS AND HIGH STATIC UNITS.
1
2
3
4
5
6A
7
LPS 2
HPS 2
KPLY / KPLY /
KPLB / KPLB /
PU
PU
YL
YL
BL
3
1
2
3
1
2
PLF PLM
LPS 1
HPS 1
KPLY / KPLY /
KPLB /
KPLB /
YL
YL
YL
YL
BL
3
1
2
3
1
2
PLF PLM
HIGH VOLTAGE
OPTIONAL HIGH VOLTAGE
LOW VOLTAGE
OPTIONAL LOW VOLTAGE
CHASSIS GROUND
HIGH VOLTAGE
LOW VOLTAGE
EARTH GROUND
PK
GR
WH
2 4
BR1
GR
M
3~
BM
LOW
SPEED
HIGH
SPEED
RD
BL
WH BR
YL
PU
PK
BL
RD
GR
GR
RD
BL
BR
BL
BK
RD
OR
BL
BL
L1 T1
BC 2
L2 T2
L3 T3
OR
RD
BK
BK
RD
OR
6B
WH
WH
3
GR
~
M
1
CM 2
FC 2
BK
BR
PU
GY
BR
PU
RD
GR
~
M
1
CM 1
FC 1
BK
BR
PU
BK
BR
PU
RD
2
1
2
1
MLP FLP
BK
8
FB3 F3 F3 F3
5
BK ORRD
5
5
6B
9
9
9
10
10
BK
RD
YL
BK
RD
OR
BK
RD
OR
GY
PK
GY
CC2
L1 T1
L2 T2
L3 T3
CCX2
GR
CCH2
GR
COMP2
L1
L2
L3
~
M
3
BK
RD
YL
BK
RD
OR
BK
RD
OR
RD
BK
CC1
L1 T1
L2 T2
L3 T3
CCX1
GR
COMP1
L1
L2
L3
~
M
3
GR
CCH1
BK
FB1
F1
F1
F1
FB2
F2
F2
F2
BK
CM
2
1
PLF PLM
FPS2
BR1
1 0
YL BL
2
1
PU
PU
BL
PU
2
1
PLF PLM
FPS1
2
1
9
1
2
4
5
3
6
7
8
PLF1
ES
MLP FLP
4
1
2
3
4
1
2
3
BL
PK
3 4
BR1
BR2
1 0
GY BL
PU
WH
4 3
BR2
4 2
BR2
BC1
A1 A2
BR BL
BC2
A1 A2
BK
BL
GR
BL
BK-11
BK-12
BK-13
BL
WH
OR
8
FPS2
GR
M
3~
BM
LOW
SPEED
HIGH
SPEED
YL-11
YL-12
YL-13
BK-1
BK-2
BK-3
PLM
2
1
PU
PU BK
BK
YL
8
FPS1
PLM
2
1
YL
YL
BK
BK
N
O
TE
S
C OMP O NE NT L EG E ND WIRE C ODE
FAC T ORY WIRING
FIE LD WIRING
TH ERM O STAT FIE LD WIRING ++
2
S T AG E C OO LING /HE AT ING
TB1 TSTAT
W1
G
R
Y1
C
O (HEAT PUMP ONLY)
WH
GR
PK
YL
BL
OR
W1
W2
G
R
Y1
Y2
C
O
BR W2 (WITH 2 STAGE HEAT)
PU Y2
GR WH BR
YL
PU
PK
BL
PU
WH
GR
YL
BL
PU
WH
GR
YL
BL
BL
BL
BL
GR W H BR
YL
PU
PK
RD
BL
RD
RD
RD
THERMOSTAT++
R
XMFR - R
XMFR - C
C
SPEED UP
EBTDR
G
COM
NC
NO
M1
M2
3A
NOTE 3
2
PK
WH
GY
GR
BL
YL
YL
PU
PU
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
MAT
PLF
ECON
PLM2
YL
1
2
3
4
5
6
7
8
9
10
11
12
ECON
PU
1
2
3
4
5
6
7
8
9
10
11
12
PLF2
PLM1
PLF1
PK
OR
GY
GR
BL
YL
YL
PU
PU
BKBK
WH
BL
BR
9
1
2
4
5
3
6
7
8
EHK
PLF2
3
1
2
3
4
5
6
7
8
9
EHK
PS2
PS1
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