Refrigerant Circuit
SiUS34-801A_b
130
VRVIII R-410A Heat Recovery 60Hz
2.2
REYQ144PTJU
No. in refrigerant
system diagram
Symbol
Name
Major Function
1
M1C
Inverter compressor (INV1)
Inverter compressor is operated on frequencies between 52Hz and 266Hz by using
the inverter. The number of operating steps is as follows.
REYQ14P or 16P : 26 step
2
M2C
Standard compressor 1 (INV2)
3
M1F
Inverter fan
Since the system is of the outdoor unit heat exchanging type, the fan is operated at 9-
step rotation speed by using the inverter.
4
M2F
Inverter fan
Since the system is of the outdoor unit heat exchanging type, the fan is operated at 9-
step rotation speed by using the inverter.
5(6)
Y1E
(Y3E)
Electronic expansion valve
(Main1 (Main2))
While in heating operation, PI control is applied to keep the outlet superheated
degree of the outdoor unit heat exchanger constant.
7(8)
Y2E
(Y5E)
Electronic expansion valve
(Subcool1 (Subcool2))
PI control is applied to keep the outlet superheated degree of subcooling heat
exchanger constant.
9
Y4E
Electronic expansion valve
(Refrigerant charge EVJ)
Used to open/close refrigerant charge port.
10(11)
Y5S
(Y10S)
Solenoid valve (Main bypass1
(Main bypass2))
Opens in cooling operation.
12
Y4S
Solenoid valve (Hot gas: SVP) Used to prevent the low pressure from reducing.
13
Y3S
Solenoid valve (Refrigerant
regulator liquid pipe SVL)
Used to collect refrigerant to the refrigerant regulator.
14
Y1S
Solenoid valve (Refrigerant
regulator gas purging pipe SVG)
Used to collect refrigerant to the refrigerant regulator.
15
Y7S
Solenoid valve (Refrigerant
regulator discharge pipe SVO)
Used to discharge refrigerant from the refrigerant regulator.
16
Y6S
Solenoid valve (Discharge
pipe of refrigerant regulator)
Bypass the high pressure gas to the refrigerant regulator.
17(18)
Y2S
(Y9S)
4 way valve (Heat exchanger
switch 20SA)
Used to switch outdoor heat exchanger to evaporator or condenser.
19
Y8S
4 way valve (Dual pressure
gas pipe switch 20SB)
Used to switch dual pressure gas pipe to high pressure or low pressure.
20
S1NPH High pressure sensor
Detects high pressure.
21
S2NPL
Low pressure sensor
Detects low pressure.
22(23)
S1PH
(S2PH)
HP pressure switch (For INV
compressor)
This functions when pressure increases to stop operation and avoid high pressure
increase in the event of a fault.
24
—
Pressure regulating valve
(Liquid pipe)
Used when pressure increases, to prevent any damage on components caused by
pressure increase in transport or storage.
25
—
Pressure regulating valve
(Refrigerant regulator)
Used when pressure increases, to prevent any damage on components caused by
pressure increase in transport or storage.
26
—
Subcooling heat exchanger
Apply subcooling to liquid refrigerant.
27
—
Refrigerant regulator
Surplus refrigerant is held according to the operation conditions.
28
—
Capillary tube
Used to return the refrigerating oil separated through the oil separator to the INV
compressor.
29
—
Capillary tube
Used to discharge refrigerant from the refrigerant regulator.
30
R1T
Thermistor (Outdoor air: Ta)
Used to detect outdoor temperature, correct discharge pipe temperature, and others.
31(41)
R8T
(R10T)
Thermistor (Suction pipe: TsA) Detects suction pipe temperature.
32
R31T
Thermistor (INV1 discharge
pipe: Tdi)
Detects discharge pipe temperature. Used for compressor temperature protection
control.
33
R32T
Thermistor (INV2 discharge
pipe: Tds1)
35(45)
R4T
(R12T)
Thermistor (Heat exchanger
deicer: Tb)
Detects liquid pipe temperature of the outdoor unit heat exchanger. Used to make
judgments on defrosting operation.
36(46)
R2T
(R11T)
Thermistor (Heat exchanger
gas pipe Tg)
Detects temperature of gas pipe for the outdoor unitheat exchanger. Used to exercise
the constant control of superheated degree when an evaporator is used for outdoor
unit heat exchanging.
37(47)
R7T
(R15T)
Thermistor (Heat exchanger
liquid pipe Tf)
Detects temperature of liquid pipe between the the outdoor unitheat exchanger and
main electronic expansion valve. Used to make judgments on the recover or
discharge refrigerants to the refrigerant regulator.
38(48)
R5T
(R13T)
Thermistor (Subcooling heat
exchanger gas pipe: Tsh)
Detects temperature of gas pipe on the evaporator side for the subcooling heat
exchanger. Used to exercise the constant control of superheated degree at the outlet
of
subcooled
heat exchanger.
39
R6T
Thermistor (Subcooling heat
exchanger liquid pipe Tl)
Detects temperature of liquid pipe between the main expansion valve and subcooling
heat exchanger.
40(50)
R9T
(R14T)
Thermistor (Liquid pipe Tsc)
Detects temperature of liquid pipe between the liquid stop valve and subcooling heat
exchanger.
Содержание RXYQ96PYDN
Страница 15: ...SiUS34 801A_b xiv...
Страница 23: ...Model Selection SiUS34 801A_b 8 General Information...
Страница 133: ...Field Settings SiUS34 801A_b 118 VRVIII R 410A Heat Pump 60Hz...
Страница 254: ...SiUS34 801A_b Test Operation VRVIII R 410A Heat Recovery 60Hz 239 R 410A Label R 410A Label...
Страница 329: ...Field Setting SiUS34 801A_b 314 Indoor Unit...
Страница 340: ...SiUS34 801A_b Troubleshooting by Remote Controller Troubleshooting 325...
Страница 489: ...Piping Diagrams SiUS34 801A_b 474 Appendix 1 Piping Diagrams 1 1 Outdoor Unit Heat Pump 460V RXYQ72 96 120PYDN 3D058636A...
Страница 490: ...SiUS34 801A_b Piping Diagrams Appendix 475 Heat Pump 230V RXYQ72 96 120PTJU 3D058636A...
Страница 491: ...Piping Diagrams SiUS34 801A_b 476 Appendix Heat Pump 230V RXYQ144PTJU 3D058640...
Страница 492: ...SiUS34 801A_b Piping Diagrams Appendix 477 Heat Recovery 460V REYQ72 96 120PYDN 3D058639A...
Страница 493: ...Piping Diagrams SiUS34 801A_b 478 Appendix Heat Recovery 460V REMQ72PYDN 3D058637A...
Страница 494: ...SiUS34 801A_b Piping Diagrams Appendix 479 Heat Recovery 460V REMQ96 120PYDN 3D058638A...
Страница 495: ...Piping Diagrams SiUS34 801A_b 480 Appendix Heat Recovery 230V REYQ72 96 120PTJU 3D058639A...
Страница 496: ...SiUS34 801A_b Piping Diagrams Appendix 481 Heat Recovery 230V REYQ144PTJU 3D058640...
Страница 497: ...Piping Diagrams SiUS34 801A_b 482 Appendix Heat Recovery 230V REMQ72PTJU 3D058637A...
Страница 498: ...SiUS34 801A_b Piping Diagrams Appendix 483 Heat Recovery 230V REMQ96 120PTJU 3D058638A...
Страница 501: ...Piping Diagrams SiUS34 801A_b 486 Appendix 1 3 BS Unit 4D057985A...
Страница 537: ...Piping Installation Point SiUS34 801A_b 522 Appendix...
Страница 543: ...Pressure Sensor SiUS34 801A_b 528 Appendix...
Страница 559: ...Precautions for New Refrigerant R 410A SiUS34 801A_b 544 Precautions for New Refrigerant R 410A...
Страница 563: ...SiUS34 801A_b iv Index...