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Posted by Dido on September 3, 2006, 10:49 am
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>I got a tech out to do a leak search on my circa-2000 R-410a system (have
>needed 2 recharges this summer) and he detected a leak in the evaporator
>coil (he was using some Johnson Controls sniffer).
If is leak in the system it should have been fix at first service call
Question can it be fix!! warrantee should be in affect at first service
call?
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> The coil was labeled with some application labels and one line read
> "Refrigerent: R22". I asked the tech about it and he said he didn't
> think it was right; after a couple of calls, there was some difference of
> opinion among his supervisors about whether it should be replaced at no
> cost because it was the wrong part.
That is good question, also if part is incorrect then your SEER is derated
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> One of the tech's supervisors said there's a regulator fitting just in
front
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> of the supply side of the coil that could be swapped out, making the coil
> suitable for use with R-410a. Another reference said that this coil was
> pressure-tested for R-410a pressures and should be OK (I think the
> pressure testing number on the coil label was 450psi).
450 PSI is standard pressure testing for old Refrigerants for R-410
I could not say however your cooling coil while unit is running
will be operating around 110Psi. head pressure depend on several
things which I would not speculate.
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> Is it possible to make a valid case that some corner was cut and an
> inappropriate or inferior part was used when the system was installed? Or
> are they right and the coil was an acceptable part when installed?
> I'm ever-so-slightly out of warranty, and if there's a reasonable argument
> to made that a bad/wrong/less-than-durable part was used in place of a
> more technically correct or durable part, it'd probably not cost me
> anything or just some percentage of the replacement coil price.
>
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>> coils should have no problem handling either pressure. They are doing
> this
>> to reduce warehouse space since the inception of 13 SEER and the extra
> space
>> requirements for the same # of units. When you order a coil, you will
> order
>> a coil and a matching TXV for your application.
> So...your saying that the refrigeant doesn't give a rats ass as to the
> coil
> manufacture / materials, etc....so long as it can take the pressure...
> Now who woulda guessed ?
> --
> SVL