Daikin RXYQ96PYDN, Руководство по обслуживанию

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SiUS34-801A_b Refrigerant Circuit
VRVIII R-410A Heat Pump 60Hz 19
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)
Opens/closes refrigerant charge port.
10(11)
Y5S
(Y10S)
Solenoid valve (Main bypass1
(Main bypass2))
Opens in cooling operation.
12 Y4S Solenoid valve (Hot gas: SVP) Prevents the low pressure from transient falling.
13 Y3S
Solenoid valve (Refrigerant
regulator liquid pipe SVL)
Collects refrigerant to the refrigerant regulator.
14 Y1S
Solenoid valve (Refrigerant
regulator gas purging pipe SVG)
Collects refrigerant to the refrigerant regulator.
15 Y7S
Solenoid valve (Refrigerant
regulator discharge pipe SVO)
Discharges refrigerant from the refrigerant regulator.
16 Y6S
Solenoid valve (Discharge
pipe of refrigerant regulator)
Bypasses 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) 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 Applies 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 Discharges refrigerant from the refrigerant regulator.
30 R1T Thermistor (Outdoor air: Ta) Detects 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 unit heat 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 unit heat 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.