SiME341909EA
Refrigerant Circuit (Piping Diagrams)
Part 2 Refrigerant Circuit
21
1.1.2 RXQ14/16AR
No. in
piping
diagram
Electric
symbol
Name
Function
(1)
M1C
Compressor
Compressor is operated in multi-steps according to Te.
(2)
M2C
(3)
M1F
Inverter fan
The fan rotation speed is varied by using inverter.
(4)
M2F
(5)
Y2E
Electronic expansion valve
(Injection)
PI control is applied to keep the outlet superheating degree of subcooling
heat exchanger constant.
(6)
Y4E
Electronic expansion valve
(Refrigerant auto charge)
Used to control refrigerant charging speed during refrigerant auto charge
operation and to stop refrigerant charge automatically.
(7)
Y3S
Solenoid valve
(Oil return 1)
Used to control the amount of oil from the oil separator to the compressor.
(8)
Y4S
Solenoid valve
(Oil return 2)
(9)
S1NPH
High pressure sensor
Used to detect high pressure.
(10)
S1NPL
Low pressure sensor
Used to detect low pressure.
(11)
S1PH
High pressure switch
(For M1C compressor)
In order to prevent the increase of high pressure when an error occurs, this
switch is activated at high pressure of 4.0 MPa or more to stop the
compressor operation.
(12)
S2PH
High pressure switch
(For M2C compressor)
(13)
—
Pressure regulating valve
This valve opens at a pressure of 4.0 MPa for prevention of pressure
increase, thus resulting in no damage of functional parts due to the increase
of pressure in transportation or storage.
(14)
—
Double tube heat exchanger
(Subcooling heat exchanger)
Used to subcool liquid refrigerant.
(15)
—
Capillary tube
Used to return the refrigerating oil separated through the oil separator to the
compressor.
(16)
—
(17)
R1T
Thermistor
(Outdoor air: Ta)
Used to detect outdoor air temperature, correct discharge pipe temperature,
and others.
(18)
R21T
Thermistor
(M1C discharge pipe: Tdi1)
Used to detect discharge pipe temperature, make the temperature
protection control of compressor, and others.
(19)
R22T
Thermistor
(M2C discharge pipe: Tdi2)
(20)
R3T
Thermistor
(Suction pipe: Ts)
Used to detect suction pipe temperature, and for other purposes.
(21)
R4T
Thermistor
(Heat exchanger liquid pipe: Tf)
This detects temperature of liquid pipe between the air heat exchanger and
check valve. Used to make judgements on the recover or discharge
refrigerants to the refrigerant regulator.
(22)
R5T
Thermistor
(Subcooling heat exchanger
liquid pipe: Tsc)
This detects temperature of liquid pipe between the double tube heat
exchanger.
(23)
R6T
Thermistor
(Subcooling heat exchanger
gas pipe: Tsh)
This detects temperature of gas pipe on the evaporation side of subcooling
heat exchanger. Used to exercise the constant control of superheating
degree at the outlet of subcooling heat exchanger.
(24)
R8T
Thermistor
(M1C Compressor body: Ti1)
Detects compressor surface temperature, this switch is activated at surface
temperature of 120°C or more to stop the compressor operation.
(25)
R9T
Thermistor
(M2C Compressor body: Ti2)
Содержание VRV X RXQ10ARYFK
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Страница 287: ...SiME341909EA Part 7 Appendix 281 1 Wiring Diagrams 282 1 1 Outdoor Unit 282 1 2 Indoor Unit 285 Part 7 Appendix...
Страница 288: ...Wiring Diagrams SiME341909EA 282 Part 7 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit RXQ6 8ARYFK 3D124186A...
Страница 289: ...SiME341909EA Wiring Diagrams Part 7 Appendix 283 RXQ10 12ARYFK 2D124184...
Страница 290: ...Wiring Diagrams SiME341909EA 284 Part 7 Appendix RXQ14 16ARYFK 2D124183...
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