R22 - R410 Changeover interrupted. Am I hosed?

Posted by Some Homeowner on December 14, 2007, 8:23 am

I am having my air heat pump replaced. The old unit is R22 and the new unit
is 410A (Bryant).

The guys doing the work were in the middle of the "triple evacuation" when
they had to leave. They drew a vacuum once, then pushe some coolant through
with nitrogen. They had to leave before the final evacuation.

They said they can come back and finish it in a week.

Does this delay hurt the process? Should I ask them to start over from the
top? I don't want to make more work for them for no reason, but I don't
want to damage the new compressor due to improper flushing.

Any advice would be GREATLY appreciated.

Thanks in advance.

remove the QWERTY to reply
AndyQWERTYBaj@OpQWERTYonline.net

Posted by Noon-Air on December 14, 2007, 9:06 am

> I am having my air heat pump replaced. The old unit is R22 and the new
> unit
> is 410A (Bryant).
> The guys doing the work were in the middle of the "triple evacuation" when
> they had to leave. They drew a vacuum once, then pushe some coolant
> through
> with nitrogen. They had to leave before the final evacuation.
> They said they can come back and finish it in a week.
> Does this delay hurt the process? Should I ask them to start over from the
> top? I don't want to make more work for them for no reason, but I don't
> want to damage the new compressor due to improper flushing.
> Any advice would be GREATLY appreciated.
> Thanks in advance.

The only question I have is...what was so important that they couldn't have
finished the job, or at least come back the next day and get it done.
Leaving the system the way they did shouldn't effect it as long as it was
closed off.

Posted by Some Homeowner on December 14, 2007, 2:42 pm

>
> The only question I have is...what was so important that they couldn't
> have finished the job, or at least come back the next day and get it
> done. Leaving the system the way they did shouldn't effect it as long
> as it was closed off.
>
>

Noon-Air:

Thanks for the reply. Yes, they capped it off carefully before they left.
They weem like conscientious workmen.

They had to leave because the snow was piling up faster than forecast and
they had about a 45 minute drive home in the truck. Since my system is dual
fuel and the oil part is working fine I told them I didn't mind.

As for the dealay, I guess they are just booked up.

Posted by Bubba on December 14, 2007, 12:41 pm

On 14 Dec 2007 13:23:43 GMT, Some Homeowner

>I am having my air heat pump replaced. The old unit is R22 and the new unit
>is 410A (Bryant).
>The guys doing the work were in the middle of the "triple evacuation" when
>they had to leave. They drew a vacuum once, then pushe some coolant through
>with nitrogen. They had to leave before the final evacuation.
>They said they can come back and finish it in a week.
>Does this delay hurt the process? Should I ask them to start over from the
>top? I don't want to make more work for them for no reason, but I don't
>want to damage the new compressor due to improper flushing.
>Any advice would be GREATLY appreciated.
>Thanks in advance.
>remove the QWERTY to reply
>AndyQWERTYBaj@OpQWERTYonline.net

Sounds like they used some Calgon RX-11 to flush your old lines since
they didnt replace them?
The triple evacuation is unneeded anymore as the new vacuum pumps are
two stage. The most important thing is to make sure they use a micron
gauge to measure the degree of evacuation. It should get to 500
microns or less and hold to be considered "Good". It sounds like they
dont have one?
Sounds kinda nice that they pissed on your job to go away for a week
to another "more important" job.
Did you pick the cheapest quote?
Bubba

Posted by Some Homeowner on December 14, 2007, 2:47 pm

>
> Sounds like they used some Calgon RX-11 to flush your old lines since
> they didnt replace them?
> The triple evacuation is unneeded anymore as the new vacuum pumps are
> two stage. The most important thing is to make sure they use a micron
> gauge to measure the degree of evacuation. It should get to 500
> microns or less and hold to be considered "Good". It sounds like they
> dont have one?
> Sounds kinda nice that they pissed on your job to go away for a week
> to another "more important" job.
> Did you pick the cheapest quote?
> Bubba
>

Yes, they were flushing and re-using old lines (the line run across the
house over a finsihed basement so replacing the line would be more
expensive than usual.)

They were using a vacuum pump and gauge of some sort. I am not wure what
type, I was only sort of keeping track of what they were doing.

They had to leave because the snow was piling up. The snow storm started
in ernest sooner than forecast.

They got the outside compressor unit and the indoor coil installed and
closed up before they left. Since my system is dual fuel my oil heat is
working fine and it's not really a hardship for me. (Too cold for a air
heat pump in CT right now) They could have come back this Saturday, but I
had other plans already made.

Saturdays are their make-up days so if they do mess up the customer
doesn't need another day off work. Works for me.

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