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Function General
SiUS39-602
38
Function
1.
Function General
1.1
Symbol
Symbol
Electric symbol
Name and function
20S1
(Y1R)
Fore way changeover valve (Main)
20S2
(Y2R)
Fore way changeover valve (Sub)
DSH
(—)
Discharge pipe superheated degree
DSHi
(—)
Discharge pipe superheated degree of inverter compressor
DSHs
(—)
Discharge pipe superheated degree of standard compressor
EV
(Y1E,Y2E,Y3E)
Opening of electronic expansion valve
EV1
(Y1E)
Electronic expansion valve of main heat exchanger
EV2
(Y2E)
Electronic expansion valve of sub heat exchanger
EV3
(Y3E)
Electronic expansion valve of sub-cooling heat exchanger
HTDi
(—)
Value of INV compressor discharge pipe temperature (R31T) compensated with
outdoor air temperature
HTDs
(—)
Value of STD compressor discharge pipe temperature (R32T,R33T) compensated
with outdoor air temperature
Pc
(S1NPH)
Pressure value detected by high pressure sensor
Pe
(S1NPL)
Pressure value detected by low pressure sensor
SH
(—)
Evaporator outlet superheat
SHS
(—)
Target evaporator outlet superheat
SVC
(Y7S)
Solenoid valve for reducing pressure in high pressure gas pipe
SVG
(Y4S)
Solenoid valve for discharging receiver gas
SVL
(Y3S)
Solenoid valve for charging receiver gas
SVO
(Y2S)
Solenoid valve for Oil equalization
SVP
(Y1S)
Solenoid valve for hot gas
SVR
(Y5S)
Solenoid valve for discharge gas pipe closing
SVSL
(Y6S)
Solenoid valve for non-operating unit liquid pipe closing
Tb
(R4T)
Heat exchanger outlet (during cooling) temperature
Tc
(—)
High pressure equivalent saturation temperature
Tcs
(—)
Target Tc temperature
Te
(—)
Low pressure equivalent saturation temperature
TeS
(—)
Target Te temperature
Tfin
(R1T)
Inverter fin temperature
Ts
(R2T)
Suction pipe temperature detected by R2T
Tsh
(R5T)
Temperature detected by R5T
Tp
(—)
Calculated value of compressor port temperature
Summary of Contents for REYQ72
Page 35: ...Specifications SiUS39 602 24 Specifications...
Page 121: ...Field Setting SiUS39 602 110 Test Operation...
Page 129: ...Troubleshooting by Remote Controller SiUS39 602 118 Troubleshooting...
Page 225: ...Troubleshooting OP Unified ON OFF Controller SiUS39 602 214 Troubleshooting...
Page 232: ...SiUS39 602 Piping Diagrams Appendix 221 1 3 BS Unit BSVQ36MVJU BSVQ60MVJU 4D045338...
Page 235: ...Wiring Diagrams for Reference SiUS39 602 224 Appendix REYQ144 168 192MTJU C 3D050354A...
Page 240: ...SiUS39 602 Wiring Diagrams for Reference Appendix 229 2 4 BS Unit BSVQ36M 60MVJU 3D045069A...
Page 249: ...Example of Connection R 410A Type SiUS39 602 238 Appendix...
Page 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 602 244 Appendix...
Page 265: ...Precautions for New Refrigerant R 410A SiUS39 602 254 Precautions for New Refrigerant R 410A...
Page 269: ...SiUS39 602 iv Index...