Wiring Schematic
RELAY
WE
BK
SUPPRESSOR
SHORT
CYCLE
TIMER
COMPRESSOR
GN
TO CUSTOMER'S
ALARM SYSTEM
TERMINAL BLOCK ON UNIT
BLR MTR
EVAPORATOR
PRESSURE SWITCH
OPTIONAL
S
R C
O/L
R134A UNITS
SHORT
CYCLE
PROTECTOR
OPTIONAL
CRANKCASE HEATER
CAP
CAP
HEATER
T-STAT
OPTIONAL
HEATER
55
T-STAT
75
BU
Y
R
THERMAL
CUTOUT
BU
R
RELAY
O/L
C
S
R
BK
WE
2 1
CAP
K2A4C_NP33
ON/OFF
SWITCH
FOR UL
LISTED
UNITS
CONDENSER
BLR MTR
1
0
8
6
RELAY -
ADDITIONAL OPTIONS
1) AIRFLOW SWITCH
2) COOLING EFFECT DETECTOR
NOTE:
1) ADDITIONAL OPTIONS ARE WIRED TO AN
INDIVIDUAL 3 POSITION TERMINAL BLOCK
SHOWN ABOVE.
3) EXCESS PRESSURE DETECTOR
WE
CAP
RD
S
C
R
COMPRESSOR
WIRING DETAIL
FOR R22 UNITS
F
F
10
WD-173 REV. F
NP33 SERIES
