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View Full Version : Retrofit for R22 to R422D


chillyblue
09-08-2011, 05:20 PM
Hi

Anybody done or had any experiences (good or Bad)with changing split air-con systems from R22 to R422D??

CB
chillerman2006
09-08-2011, 05:44 PM
your talking small a/c, surely it's better for your customers to have a nice new pretty unit with some warranty
chillyblue
09-08-2011, 05:50 PM
My website??? i didn't know i had one, whats the address, could be interesting!!

10kw cassette so its a 50/50
CB
chillerman2006
09-08-2011, 05:55 PM
My website??? i didn't know i had one, whats the address, could be interesting!!

10kw cassette so its a 50/50
CB

My mistake was looking at Askew in burnly, your ip is NN area
james10
09-08-2011, 06:02 PM
always used R417a in splits, used 422d on larger applications and with some fine tuniing it does the job
Achiel_refri
12-10-2011, 05:56 AM
Hi all,

Is that flamable gas? because it is mixing with hydrocarbon 600a/R125and R134a

Please advise.
Fri3Oil System
13-10-2011, 11:26 AM
Check this, might be useful:
www.fri3oilsystem.com/retrofitcase.zip (http://www.fri3oilsystem.com/retrofitcase.zip)
Comparison on a chiller with 2 circuits, 300kw each. On one circuit R22 was substituted with R422D, and on the other, with R407C (once MO was totally eliminated). Check the results.

Regards,

Nando.