Refrigerant Piping Drawings - Toshiba RUAGP Series Original Owner's Manual

1. Heat pump
Electric
Circuit A
expansion valve
CGTA1
Air heat exchanger
T
T
Air heat exchanger
CGTA2
Solenoid valve
SGTA
T
SGPA
Service
P
port
PSW(S)
Strainer
P
Chilled
water
inlet
Solenoid valve
T
SGTC
SGPC
Service
P
port
CGTC1
Air heat exchanger
T
T
Air heat exchanger
CGTC2
Circuit C
Electric
expansion valve
Outdoor air temperature OAT
Inlet water temperature ET
Middle water temperature
Outlet water temperature
(Note 1) The above figure is a refrigerant piping system diagram for inverter pump-integrated machine.
The piping system of pumpless models lacks of the pump and check valve seen in this diagram.

Refrigerant piping drawings

Refrigerant piping system diagram
Check valve
Check
valve
Electric
Solenoid
expansion valve
valve
Electric
expansion valve
DGPA
P
63HA
Service
T DGTA
port
Air vent
valve
ET
T
PSW(E)
P
Water heat
exchanger
Water
drainage port
(*)
Pump
DGPC
P
63HC
DGTC Service
T
port
Electric
expansion valve
Solenoid
valve
Electric
expansion valve
Check
Check valve
valve
Inlet pump water pressure
Inlet water heat exchanger water pressure
MT
Outlet water heat exchanger water pressure
LT
Check valve
Solenoid Solenoid
valve valve
Electric
expansion valve
Service Service
port port
Electric
expansion valve
Water heat
exchanger
Fuslble Fuslble
plug plug
Electric
expansion valve
Service Service
port port
OAT
T
Electric
expansion valve
Check valve
Solenoid
Solenoid
valve
valve
High pressure sensor
PSW(S)
Low-pressure sensor
PSW(E)
PSW(L)
Discharge gas temperature sensor
Suction gas temperature sensor
- 62 -
Cooling
operation
Heating
operation
Check
valve
Circuit B
Solenoid
valve
Air heat exchanger
Air heat exchanger
DGPB Solenoid valve
63HB P
SGPB
Service
DGTB
T
port
Air vent
valve
MT
T
P T
LT
PSW(L)
Water
drainage port
(*)
Solenoid valve
DGPD
P
63HD
SGPD
Service
DGTD T
port
Air heat exchanger
Air heat exchanger
Solenoid
valve
Circuit D
Check
valve
DGP*
Coil gas temperature sensor 1
SGP*
Coil gas temperature sensor 2
DGT* High-pressure switch
SGT*
* indicates circuit name (A, B, C, D).
(*) Water drain valves for freeze prevention
Electric
expansion valve
CGTB1
T
T
CGTB2
SGTB
T
Service
P
port
Chilled
water
outlet
Check valve
SGTD
T
Service
P
port
CGTD1
T
T
CGTD2
Electric
expansion valve
CGT*1
CGT*2
63H*