York YJ-30 Technical Manual page 12

Typical Field Wiring Diagrams
POWER SUPPLY
208/230, 460
OR 575-3-60
Typical Field Wiring Diagram NJ-30/-40 Evaporator Units, NJ-50 Air Handler and MACZ-50A Evaporator Coil when
Matched with YJ-30, -40, -50 Condenser
NOTE: Typical field wiring when OD unit is matched with NJ air handler. When matching condensing unit with models other
than NJ an additional control transformer is required on the Indoor unit.
12
CONDENSER CONTROL BOX
TB2
C S1 S2 G1 G2 S3 S4
C S1 S2 G1 G2 S3 S4
1 2 3 4
LIQUID LINE
SOLENOID VALVES
EVAPORATOR
BLOWER MOTOR
CONTACTOR
EVAPORATOR CONTROL BOX
SE CONTROL BOARD
THERMOSTAT CONNECTIONS
UCB 2
W1 W2 Y1 G Y2 0CC
SYSTEM 2
UCB 1
W1 W2 Y1 G Y2 0CC
SYSTEM 1
TB1
R C Y1
FOUR STAGE COOL
628792-BTG-G-0418
X R SD-24 C
X R SD-24 C
Y2 G Y3 Y4
THERMOSTAT
Ducted Systems