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Hi,
I am converting a Trane chiller from R22 to R422D. I understand the Helical Rotor compressor runs on ISO68 oil. The chiller is going to be operated at -10C. Will ISO68 be ok at this temperature or should I change it to a polyolester based oil i.e. EAL Arctic 32?
Also, the chiller has an Adaptive Control unit on it. Where can I download a manual for this, including the password?
Thanks
that has the machine control
Sparkatan ,
You will not be able to convert to R422D. The chiller will not operate correctly with R422D and especially not at -10c.
Hi Paulh, thanks for that.
The chiller currently has an operating range of +15 to -12C when operating on R22. Is there an alternative to R22 suitable for the helical rotor compressor?
Use R407C with POE oil. I suppose that -10C is correct for RTAA. Password is ++--++ and +-+-+-
Try to find Users manual on trane.com
Anyone have or know where I can get the R22/R404a retrofit parts list for this chiller?
Hi,
Please check your email or you can contact local TRANE sales office for selection.
Regards,
CV
Hi Sparkatan,
The best option is to contact your Trane office. Give them the serial no and they will do a selection. The selection will be for R404a. Normally the EXV's may have to be changed out with the EXV modules as well as a good few oil changes to minimise the mineral oil content.
contact Trane office and they will propose you a conversion kit
e-mail me to send you the manual
christos@firstclima.gr
I am not sure you have to replace parts... Only oil.