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Thread: Retrofit for R22 to R422D
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09-08-2011, 05:20 PM #1
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Retrofit for R22 to R422D
Hi
Anybody done or had any experiences (good or Bad)with changing split air-con systems from R22 to R422D??
CB
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09-08-2011, 05:44 PM #2
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Re: Retrofit for R22 to R422D
your talking small a/c, surely it's better for your customers to have a nice new pretty unit with some warranty
Last edited by chillerman2006; 09-08-2011 at 05:49 PM.
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09-08-2011, 05:50 PM #3
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Re: Retrofit for R22 to R422D
My website??? i didn't know i had one, whats the address, could be interesting!!
10kw cassette so its a 50/50
CB
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09-08-2011, 05:55 PM #4
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Re: Retrofit for R22 to R422D
My mistake was looking at Askew in burnly, your ip is NN area
Originally Posted by chillyblue
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09-08-2011, 06:02 PM #5
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Re: Retrofit for R22 to R422D
always used R417a in splits, used 422d on larger applications and with some fine tuniing it does the job
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12-10-2011, 05:56 AM #6
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Re: Retrofit for R22 to R422D
Hi all,
Is that flamable gas? because it is mixing with hydrocarbon 600a/R125and R134a
Please advise.
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13-10-2011, 11:26 AM #7
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Re: Retrofit for R22 to R422D
Check this, might be useful:
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.
