[A/S] Re: Armstrong AC Units & R12 R22 R134

"Hot Shot" is the ICOR trade name for the blended refrigerant know as R-414B.

INGREDIENT NAME WEIGHT % Chlorodifluoromethane 50 Wt. %
2-Chloro-1,1,1,2-tetrafluoroethane 38 WT. %
1-Chloro-1,1-difluoroethane, HCFC-142b 9.5 WT. %

So it is a blend of ethane and methane product to nearly match the properties of R-12. IT should not be mixed into R-12 in a system. The R-12 should be completely removed and then charged with R-12.

R-414B id fully compatable with the elastomers and oils used with R-12, so there is no problem changing refrigerants. Unlike R-12 that can be charged as a vapor, R-414B MUST be charged intot he system as a liquid.

Ken
1989 Avion 34V
1979 Silver Streak, 28' FORSALE
Cypress, TX

--- In AirstreamList@yahoogroups.com, Stan <ssnod@...> wrote:
>
> I did not know that the RV used R22. Much easier to find that R12. In the aviation community we still need the R12. It can be obtained but has finally gotten so expensive that even aviation looks for an alternative.
>
> I have see "Hot Shot" used in place of R12 and R134. The gas will mix with both and cools well enough.
>
> Stan
>

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