Carrier 30GTN unit Refericerant type 407C

[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:

[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

[peng hongzhong]

Thanks Mr.radekklimat.

[get the gauges]

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

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.