Requesting a litle advice - ac correct r22 charge.
Recently we had a new York furnace and evaporator coil (with txv) installed to replace aging units. We had it installed when it was still quite cold outside and I have a question regarding the freon R22 charge which was set after the coil was installed. The tech simply checked the charge by adjusting it to suction 65psi. I feel he should have set the charge by using the subcool method. I believe the outside temperature on the installation day was about 60 degrees. Should I insist that they come back to recheck the charge or is their "rule of thumb" method really good enough and to be trusted/accepted? The 65 degrees suction pressure is approx. 38 degrees at the evap coil, but is the system going to perform as it should?
Thanks for your input!
I didn't know there was a rule of thumb, you might want to invite him back over.
They just guessed based on whatever.
It should be checked by SC, SH, and temp drop across the coil.
Does rule of thumb mean, if you put your thumb on the big line and it's cold, you're O.K.?
Originally Posted by beenthere
I fully support the military and the War on Terrorism.
If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.
If you do know, then do. But do it right. Otherwise, you may not be doing it long.
Nice, very nice, thanks for the in depth answer.lol
Originally Posted by iraqveteran
Here's the formula he was using....
Physical weight of unit
Ounces in a 12 pack
Just call him back and make him do it right.
I need a new signature.....
call them and get it checked
that is not how to ajust anything and you may even be over charged