Piping Diagrams; Cooling Only; Heat Pump; Indoor Units - York YKCA-YKHA 18 Service Manual

4. Piping Diagrams

Heat pump

4-way valve
Muffle
High pressure switch
T5
Discharge temp. sensor
compressor

Cooling only

T5
Discharge temp. sensor
compressor
Remark:
1. For YKJ-18 and YKJ-24
2. For YKJ-36 and YKJ-48 , check valve and auxiliary capillary is not included.
Outdoor unit
condenser temp. sensor
T3
T4
Throttle capiliary
ambient temp. sensor
low-pressure accumulator
Outdoor unit
condenser temp. sensor
filter
T3
T4
Throttle capiliary
ambient temp. sensor
, accumulator is not included.
Check valve
filter
stop valve
stop valve
stop valve
stop valve

Indoor units

T2
evaporator temp. sensor
T1
room temp. sensor
Indoor units
T2
evaporator temp. sensor
T1
room temp. sensor