Outline of Control (Outdoor Unit)
SiE 00-07
44
Function R-407C PLUS Series
3.2
Motorized Valve PI Control
Controls the motorized valves (EV1, EV2, EV3) to maintain the outlet superheated degree (SH) of the
outdoor heat exchanger (evaporator) at constant during heating operation.
SH = Th6 – Te
Te: Low pressure equivalent saturation temperature (˚C)
Th6: Accumulator outlet temperature (˚C)
Superheated degree target value (SHS)
Initial value at the start of motorized valve control: SHS = 5 ˚C
When Th6 – Te < 5: SHS (new) = SHS (current) + 1
However, when Th6 – Te < 5 and DSHi < 30: SHS = 7 ˚C (fixed)
When Th6 – Te > 10: SHS (new) = SHS (current) – 1
DSHi: Inverter discharge pipe superheat
Содержание FXYBP20K7V1
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Страница 17: ...Product Outline SiE 00 07 6 General Information R 407C PLUS Series ...
Страница 41: ...Specifications SiE 00 07 30 Specifications R 407C PLUS Series ...
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