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ESIE09-08A
Basic Control
Function
57
2.3
Electronic Expansion Valve PI Control R-410A
circuit
Main Electronic Expansion Valve EV1 Control - Outdoor Unit
Carries out the electronic expansion valve (Y1E) PI control to maintain the evaporator outlet superheated
degree (SH) at constant during heating operation to make maximum use of the outdoor unit heat
exchanger (evaporator).
The optimum initial value of the evaporator outlet superheated degree is 3°C, but varies depending on the
discharge pipe superheated degree of inverter compressor.
Subcooling Electronic Expansion Valve EV3 Control - Outdoor Unit
Makes PI control of the electronic expansion valve (Y3E) to keep the superheated degree
(SH)
of the
outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger.
Electronic Expansion Valve K1E Control - Indoor Unit
Carries out the electronic expansion valve (K1E) PI control to maintain the condensor outlet subcooled
degree (SC) at constant during heating operation to make maximum use of the indoor unit heat exchanger
(condensor).
2.4
Electronic Expansion Valve PI Control R-134a
circuit
Electronic Expansion Valve K2E Control - Indoor Unit
Carries out the electronic expansion valve (K1E) PI control to maintain the condensor outlet subcooled
degree (SC) at constant during heating operation to make maximum use of the indoor unit heat exchanger
(condensor).
SH = Ts1 - Te
SH : Evaporator outlet superheated degree (°C)
Ts1 : Suction pipe temperature detected by thermistor R3T
(°C)
Te : Low pressure equivalent saturation temperature (°C)
SH = Tsh
- Te
SH : Outlet superheated degree of evaporator (
C)
Tsh : Suction pipe temperature detected with the
thermistor R4T (
C)
Te : Low pressure equivalent saturation temperature (
C)
SC = Tc - R3T
SC = Tc - R7T
Содержание ALTHERMA HT EKBUHAA6 V3
Страница 2: ......
Страница 7: ...ESIE09 08A Table of Contents v 1 3 Service Tools 283 Index i Drawings Flow Charts iii ...
Страница 13: ...ESIE09 08A General Information 1 Part 1 General Information 1 Model Names of Indoor Outdoor Units Tanks 2 ...
Страница 16: ...Model Names of Indoor Outdoor Units Tanks ESIE09 08A 4 General Information ...
Страница 17: ...ESIE09 08A Specifications 5 Part 2 Specifications 1 Specifications 6 1 1 Outdoor Units 6 1 2 Indoor Unit 8 ...
Страница 28: ...Refrigerant Circuit ESIE09 08A 16 Refrigerant Circuit EKHBRD 011 014 016 AB AC V1 Y1 ...
Страница 38: ...Functional Parts Layout ESIE09 08A 26 Refrigerant Circuit 2 6 EKHTSU 200 260 A AB AC Front view Tank sensor ...
Страница 40: ...Functional Parts Layout ESIE09 08A 28 Refrigerant Circuit ...
Страница 63: ...ESIE09 08A PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 Refrigerant Circuit 51 ...
Страница 64: ...PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 ESIE09 08A 52 Refrigerant Circuit ...
Страница 125: ...ESIE09 08A Field Setting Test Operation 113 ...
Страница 232: ...Troubleshooting by Indication on the Remote Controller ESIE09 08A 222 Troubleshooting ...
Страница 237: ...ESIE09 08A Piping Diagrams Appendix 227 EKHBRD 011 014 016 AB AC V1 Y1 ...
Страница 250: ...Wiring Diagrams ESIE09 08A 240 Appendix EKHBRD 011 014 016 AB AC V1 ...
Страница 251: ...ESIE09 08A Wiring Diagrams Appendix 241 ...
Страница 256: ...Wiring Diagrams ESIE09 08A 246 Appendix EKHBRD 011 014 016 AB AC Y1 ...
Страница 257: ...ESIE09 08A Wiring Diagrams Appendix 247 ...
Страница 260: ...Wiring Diagrams ESIE09 08A 250 Appendix ...
Страница 266: ...Method of Replacing the Inverter s Power Transistors Modules ESIE09 08A 256 Appendix Inverter PC board C C W U V ...
Страница 288: ...3 Way Valve ESIE09 08A 278 Appendix ...