Piping Diagram; Heat Pump; Cooling Only; Indoor Units - York YOCA-YOHA 12 Service Manual

4. Piping diagram

Heat pump

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

Cooling Only

T5
Discharge temp. sensor
compressor
Remark:
1. For YOJA 12 and YOJA 18 , accumulator is not included.
2. For YOJA 36 and YOJA 48 , YOJA 60 , check valve and auxiliary capillary is not included.
3. For YODA 60, accumulator is standard.

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
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