Any thoughts on 427a for r22 replacement

 
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Old 02-06-2013, 05:33 AM   #1
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Any thoughts on 427a for r22 replacement


Looking for a refrigerant that does not contain propane that will also work well in residential a/c and heatpumps. Has anyone used this and do you have to change out the oil they claim no components need to be changed.

Mineral oil and alkylbenzene are often acceptable with R-427A if the system has an oil separator and reliable oil return with R-22. Otherwise the oil must be changed to POE. If POE is required, usually only one change-out of the existing lubricant is needed, as R-427A can tolerate high levels of residual mineral oil or alkylbenzene remaining in the system.

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Old 03-22-2013, 04:18 PM   #2
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Re: Any thoughts on 427a for r22 replacement


We are having the best luck with Dupont Isceon 99 for this, very little loss of cooling capacity.


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Old 03-23-2013, 09:21 AM   #3
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Re: Any thoughts on 427a for r22 replacement


MO99 contains propane and I understand that manufactures will not warranty there product if we retrofit with this and if a leak accrues there is a probability of a fire what is your understanding on this?
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Old 03-23-2013, 10:00 AM   #4
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Re: Any thoughts on 427a for r22 replacement


We have not heard of any warranty rejections.

Dupont M099 has same A1 flammable rating as many other HFC refrigerants, which means it takes work to make light up.
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Old 03-24-2013, 12:02 PM   #5
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Re: Any thoughts on 427a for r22 replacement


Thanks
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Old 03-29-2013, 12:30 AM   #6
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Re: Any thoughts on 427a for r22 replacement


Quote:
Originally Posted by jmyhvac View Post
MO99 contains propane and I understand that manufactures will not warranty there product if we retrofit with this and if a leak accrues there is a probability of a fire what is your understanding on this?
Trane has a bulliten out on MO99. they have approved it.
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Old 03-29-2013, 05:38 AM   #7
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Re: Any thoughts on 427a for r22 replacement


Thanks beenthere, I will check that out
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Old 04-06-2013, 04:02 PM   #8
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Re: Any thoughts on 427a for r22 replacement


I didn't see this thread until after I posted mine. One of my suppliers is pushing 427A hard. Has anyone compared MO99 to 427A. I'm trying to make a decision on which one my company will go with.
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Old 04-06-2013, 05:21 PM   #9
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Re: Any thoughts on 427a for r22 replacement


I've been looking at the data sheets for 427A and MO99. The compressor has to be cut and oil dumped and replaced for 427A. MO99 on the other hand is compatible with R22 oils.
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