Charging Split, Using Amps
I was always taught to use all possible avenues when charging a system. Being a little stronger electrically, I like to use R.L.A. on the compressor figuring the motor is operating efficiently. This does not agree with the superheat reccommended. Is it best to ignore this or just take it into consideration? My superheat is okay now but I'm not satisfied with the currrent on the compressor. It's running approx 3 or 4 amps under what it is rated for. Any comments on this would be greatly appreciated. :D
Re: Charging Split, Using Amps
Old thread but hope someone can respond.
1. Charging a mini split AC, the safe method as suggested is manufacturer's labelled weight. So can anyone confirm that superheat values (or sub-cooling too) are optimal when charging by manufacturer's labelled weight.
2. If rated current is being drawn and superheat suggests more charge required, does this mean AC system is not designed well (assuming no parts failure).
3. My 24000btu split is labelled at 1740grams 25ft(7.5meters) and additional charge of 20grams per meter of additional pipe up-till 20meters.
My actual requirements are filled by around 3.5 meters.
My question is, in my case is 1740grams of r22 an overcharge for my 3.5 meters, if yes should i adjust the refrigerant to match 3.5meters (how many grams for 3.5meters) or should i use a pipe of 7.5 meters. If this might help local weather temperatures are between 40-50 °C during day.