Toshiba ESTIA R32 HWT-401HW-E Manual page 65

3-2. Refrigeration cycle system diagram
Refrigeration circuit and sensor placement
HWT-601XWHM3W-E, HWT-601XWHT6W-E
HWT-401HW-E, HWT-601HW-E
Heating / Hot water supply
Defrosting / Cooling
TD
Compressor
HWT-1101XWHM3W-E, HWT-1101XWHT6W-E, HWT-1101XWHT9W-E
HWT-801HW-E, HWT-1101HW-E
Heating / Hot water supply
Defrosting / Cooling
High pressure
sensor (PD)
TD
Compressor
PMV2
Check
valve
2-way valve
Outdoor unit
High-pressure switch
4-way valve
Outdoor heat exchanger
TS
TL
TO
TE
Outdoor unit
High-pressure switch
4-way valve
Outdoor heat exchanger
TS
TL
TO
Accumulator
TE
Low
pressure
sensor
Plate-type
water heat
exchanger
TC
PMV
Low
pressure
sensor
Plate-type
water heat
exchanger
TC
PMV1
26
Hydro unit
Expansion vessel
Air vent
valve
TWO
Overpressure
preventive
valve
Flow sensor
THO
Backup
heater
Manometer
Circulation
P
pump
TWI
Hydro unit
Expansion vessel
Air vent
valve
TWO
Overpressure
preventive
valve
Flow sensor
THO
Backup
heater
Manometer
Circulation
P
pump
TWI
TOSHIBA I 25
TOSHIBA
I 25