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Thread: R422d ???????
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07-08-2008, 08:05 PM #1
R422d ???????
Hi I Have just changed a condensing unit that was on R409A and was advised to use 422D as the new drop in, Do I need to change the expansion valve to an R22 valve as the 134A valve that was on there seems to be restricting quite a bit.
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08-08-2008, 12:23 AM #2
Re: R422d ???????
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08-08-2008, 01:23 AM #3
Re: R422d ???????
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08-08-2008, 07:25 PM #4
Re: R422d ???????
Thanks guys the rep from our supplier has now said that 422D can be used for medium temperature R12 or R409A replacement and that changing the valve which I have already done was the right thing to do
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