Question about Carrier 38CKC042 Air Conditioner
I am in need of tect. support. I have Carrier 40RM007 indoor air handler with a cooling only R22 expantion valve and a Carrier outdoor heat pump 38UQZ007 that is 407C. My question is can I change the indoor expantion valve to a 407C heat pump expantion valve? If so what is the model number of that valve.
Carrier did sell some systems with R407c as a quick fix to gov regulations for about 2 yrs. R407c is a blend . and is treated like R410a except R407c pressures are more simular to R22. being that the pressures run the same the system should work with out changing any parts that being said if the evaporator has been used for R22 the oil residue wiil give you problems ifit is a new unit you would be ok.
Posted on Jan 10, 2009
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Posted on Jan 02, 2017
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