Fujitsu WATERSTAGE 112 - Refrigeration Diagram

Heat Pump, Split System, Single Service, 3 phase
Maintenance Document 1394-1
9
1.4 Refrigeration Diagram
TH
C
: Compressor temperature sensor
TH
D
: Discharge temperature sensor
TH
HM
: Outdoor exchanger middle temperature sensor
TH
HO
: Outdoor exchanger outlet temperature sensor
TH
O
: Outdoor temperature sensor
TH
PI
: Exchanger temperature sensor
Water
heat
exchanger
Heat
exchanger
Compressor
with
Injection port
Compressor
with
Injection port
4-
Way
valve
Strainer
Strainer
Pressure sensor
Expansion Valve
Outdoor Unit
Hydraulic Unit
Pressure
check valve
Expansion vessel
Air bleeding valve
Circulation pump
Heating
unit
(Floor
heating,
radiator,
etc)
Supply/drain
port
Pressure safety
valve
Pressure
gauge
Hot water
column sensor
Hot water
return sensor
Injection
expansion valve
TH
HO
TH
O
TH
D
TH
PI
TH
C
Expansion valve
inlet thermistor
Strainer
Buffer
tank
Auxiliary heater
Accumulator
Injection circuit
S
olenoid valve
Solenoid valve
Injection
expansion valve
Injection
expansion valve
TH
HM