Advice required

[abbasi]

Hi

we have ALCO expansion valve TCLE 7.5 FW (7.5 tons for R-12), can we use it on R-22 beacuse we recently used R-22 valves for R-407C by adjusting the superheat


What is change in composition of suction and liquid filter drier, can we use suction drier in liquid line with capacity deration?


Copeland agrees that we can change R-22 to R-407C(compressor) by change of POE oil for semi hermetic, why is it so i m bemused coz y then are they using 2 different models for R-22 and R-407C:confused:

[The Saint]

Your TCLE 7.5 FW cannot be used for R22/R407C application because the bulb charge is intended only for R12 use and it is oversize for R22/R407C application and may result to low superheat and liquid slugging.
Liq line filter/drier has a higher %age of moisture removal. You may use STAS or ADKS for liq/suction line
Mineral oil is not compatible with R407C

[NoNickName]

They WERE using two different models. Now they are using POE also for R22 applications. You can't use mineral for R407c though.

[Samarjit Sen]

Copeland is quite right in suggesting that by changing the oil POE you can use the R22 semihermetic compressor to R 407c. Mineral oil is not misissible with R 407c. As for the Expansion Valve it is a different issue and the same has been very nicely and clearly stated by the above two posts.