3-2.Refrigeration Cycle System Diagram - Toshiba HWT-602S21SM3W-E(TR) Service Manual

3-2. Refrigeration cycle system diagram
HWT-602S21***W-E
HWT-401HW-E, HWT-601HW-E
Outdoor unit
Heating / Hot water supply
Defrosting / Cooling
High-pressure switch
TD
Compressor
TS
HWT-1102S21***W-E, HWT-1402S21***W-E
HWT-801H(R)W-E, HWT-1101H(R)W-E, HWT-1401H(R)W-E, HWT-801H8(R)W-E, HWT-1101H8(R)W-E,
HWT-1401H8(R)W-E
Heating / Hot water supply
Defrosting / Cooling
High-pressure switch
High pressure
sensor (PD)
TD TD
Compressor
TS
PMV2
Check
Accumulator
valve
2-way valve
4-way valve
Outdoor heat exchanger
TL
TO
PMV
TE
Outdoor unit
4-way valve
Outdoor heat exchanger
TL TL
TO
PMV1
TE
Hydro unit
Plate-type
Low
water heat
pressure
exchanger
sensor
Air vent valve
TWO THO
TC
TWI
Three-Way
valve
Overpressure Drain
preventive
Cock
valve
Check
valve
Shutoff
valve
Plate-type
Low
water heat
pressure
exchanger
sensor
Air vent valve
TWO THO
TC
TWI
Three-Way
valve
Overpressure
Drain
preventive
Cock
valve
Check
valve
Shutoff
valve
28
Expansion vessel
Monometer
Overpressure
preventive valve
2-zone model
only
Check
valve
Mixing
valve
Secondary
pump
TTW
TFI
Hydro unit
Monometer
Expansion vessel
Overpressure
preventive valve
2-zone model
only
Check
valve
Mixing
valve
Secondary
pump
TTW
TFI