What it the best way to load refrigerant
into a ductless mini split system ?
By superheat, subcooling or refrigerant weight ?
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What it the best way to load refrigerant
into a ductless mini split system ?
By superheat, subcooling or refrigerant weight ?
Weight is the recommended methodQuote:
Originally Posted by Acrisoft
Thank you
But when refrigerant charge is unknown or when there is pipe extension, can I use superheat and subcooling methods ? If so, which of them is best ? I am looking for a generic solution to find out the amount of refrigerant for mini splits.
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It's best to use the weight method as previously mentioned by Multisync.
The manufacturer will provide you with a basic weight of refrigerant for the combination of outdoor and indoor units that you select with weight per metre corrections for extra pipe runs in excess of their design pipe-lengths.
It's important to stay within the manufacturer's recommended pipe-length limits.
Forget superheat and all the rest of it for this type of kit. The manufacturers have made it as fool-proof as possible. This method is much quicker if you have the correct professional gear to do the job.
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Thank you for tips
I was confused because some factory manual stated to charge it by superheat.
I would like to know the steps after vacuum process.
Is it enough just to open valves and let fluid flows from the outdoor unit, without worry with superheat ?
Need to recharge minisplit to factory charge
Minisplit ***** 22 :any reasons why not, after evac ***** use same to charge by weight the recup ***** on the unit, provided if store in ***** 22 bottle