charging by sight glass with an accumalater - Commercial HVAC Forum - HVACSite

charging by sight glass with an accumalater

 
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Old 05-26-2015, 11:37 PM   #1
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charging by sight glass with an accumalater


hi....my question is this: on a r-22 system 4C cold room. water cooled condenser with an accumalator. hot gas by pass or pumpdown system. when you first start up a warm walkin box, besides charging the system by the usual best way superheat and or subcooling. would you add charge until the sight glass is full? I think you should add about 80% of charge if that is known . let the system run down close to opperating temp then finish charging the unit with the sight glass being full.

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Old 06-25-2016, 08:49 PM   #2
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Re: charging by sight glass with an accumalater


always charge 80% until hot pull down then adjust the charge according to actual operating condition.
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