Rheem heat pump defrost

Posted by Steve on June 17, 2009, 8:50 pm

Too bad you won't be able to get the equipment and coils for it.

> Sorry my mistake
> look up: HC-12a/134+® and HC-22a/502a® are:

>>> There's several years of R-22 out there, in HVAC shops and
>>> on the trucks. Enough for a while. The new R-410a, which is
>>> marketed as Puron, and some other names. Supposed to do the
>>> job nicely. It won't work in the old systems. As the price
>>> of R-22 goes up, someone is sure to develop a drop in
>>> replacement.

>> R-MX22 presently available in southern states

>>> --
>>> Christopher A. Young
>>> Learn more about Jesus
>>> www.lds.org
>>> .
>>> 5. So, if R22 is going to be obsolete, what are we gonna
>>> do? Does
>>> this mean we have to buy another new unit or will there be a
>>> drop-in
>>> replacement for R22 like there was for R12 a few years ago?
>>> I used
>>> to convert R12 cars to R134A but not much need for that any
>>> more.

Posted by Stormin Mormon on June 17, 2009, 9:50 pm

When they stop making coils for the old stuff, by that time
I'll have done several years of working on the new stuff. No
worries.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

Too bad you won't be able to get the equipment and coils for
it.

Posted by Steve on June 17, 2009, 11:50 pm

most manufactures quit making R-22 stuff last September..... My suppliers
can't even get a replacement R-22 3 ton evap coil anymore.... they are not
to be had.

> When they stop making coils for the old stuff, by that time
> I'll have done several years of working on the new stuff. No
> worries.
> --
> Christopher A. Young
> Learn more about Jesus
> www.lds.org
> .
> Too bad you won't be able to get the equipment and coils for
> it.
>

Posted by The Daring Dufas on June 18, 2009, 1:16 am

Steve wrote:

> most manufactures quit making R-22 stuff last September..... My suppliers
> can't even get a replacement R-22 3 ton evap coil anymore.... they are not
> to be had.
>

Can't you install an R22 metering device on a new coil?
If it won't take an orifice/piston for R22, braze an
expansion valve on it. Have you never converted a system
over to another refrigerant? I've done a number them.

TDD

Posted by Noon-Air on June 18, 2009, 9:27 am

Thats great if you can find a coil that will fit in a Rheem/RUUD air handler
for a heat pump.
I have done several conversions also, but that is a gross injustice to the
customer....unless you one of the local low ballers who doesn't give a crap
about anything but grab the money and run.

> Steve wrote:

>> most manufactures quit making R-22 stuff last September..... My suppliers
>> can't even get a replacement R-22 3 ton evap coil anymore.... they are
>> not to be had.

> Can't you install an R22 metering device on a new coil?
> If it won't take an orifice/piston for R22, braze an
> expansion valve on it. Have you never converted a system
> over to another refrigerant? I've done a number them.
> TDD

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Rheem heat pump defrost - Page 3