Piping Diagrams; Heat Pump; Indoor Units; Outdoor Unit - York YUHA 18 FS Service Manual

4. Piping Diagrams

Heat pump

4-way valve
Muffle
High pressure switch
T5
Discharge temp. sensor
compressor
Remark:
1. For YUJA 18FS, accumulator is not included.
2. For YUJA 36FS and YUJA 48FS, check valve and auxiliary capillary is not included.

Outdoor unit

condenser temp. sensor
T3
T4
ambient temp. sensor
low-pressure accumulator
Throttle capiliary
stop valve
filter
stop valve

Indoor units

T2
evaporator temp. sensor
T1
room temp. sensor