Carrier 30GTN unit Refericerant type 407C

Hi i am from China , our company use Carrier 30GTN unit but Refericerant type is 407C.According as product Date Refericerant typ is R22. So we changeover R407c is right?:cool:

You can replace R22 407C but remember to change the oil on the installation of synthetic and how long it should be all purged with nitrogen, to mount a filter dryer and ready.
Pairing 3,6-4,6 bar, overheating, 6-8K

Thanks Mr.radekklimat.

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Originally Posted by peng hongzhong

Hi i am from China , our company use Carrier 30GTN unit but Refericerant type is 407C.According as product Date Refericerant typ is R22. So we changeover R407c is right?:cool:

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Quote:

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Originally Posted by radekklimat

You can replace R22 407C but remember to change the oil on the installation of synthetic and how long it should be all purged with nitrogen, to mount a filter dryer and ready.
Pairing 3,6-4,6 bar, overheating, 6-8K

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I would avoid a change from R22 to R407c, and avoid expensive Ester oil. It can be done but this will be hard work

Better.... just change from R22 to R417a ( Isceon 59) and keep the same mineral oil. Be aware that some electronic contollers don't like the different temperatures of different refrigerants.

Edit: I have just googled carrier 30gtn , does it use Elec expansion valve? Make sure the EEV controller works ok if you change from R22.

Good luck Steve.