Outline of Control SiE-05C
224 Functions PLUS Series
4.2 Pressure Equalizing Control Before Starting
If differential pressure remains when the compressor starts, starting current increases and the unit may
stop due to malfunction. In order to prevent this, the hot gas bypass valve is opened for a certain amount of
time just before the compressor starts to equalize the pressure between high and low pressure. After this
control is completed, the unit immediately enters soft control.
∆T is a constant determined by outdoor temperature and Te.
<In Case of Cooling
Only System>
Control contents Required time
When cooling Hot gas bypass valve ON for INV
outdoor unit and STD outdoor unit 1
1 minute
When heating 2 minutes. However, requires 3 minutes if Tc-Te > ∆T
when 1 minute elapses.
Control contents Required time
When cooling Function unit’s solenoid valveY5, Y6,
Y7 are ON
1 minute
SI-05C.BOOK Page 224 Monday, November 6, 2000 4:13 PM
Все каталоги и инструкции здесь: http://splitoff.ru/tehn-doc.html
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