Heating and air conditioning - Re: 10 SEER to 13 SEER Without changing evap coil-410A line size

Author

Re: 10 SEER to 13 SEER Without changing evap coil-410A line size

lp13-30

2006-04-18, 2:21 am

Interesting about 7/8 -3/8 not being right for a 5 ton 410 system. What
does Trane A/S recommend? We had a Carrier class a couple of years or so
ago, and as I recall that is exactly what they did recommend. They
specifically said "Absolutely do not use a 1/2 liquid line--never
ever-period" BTW, I agree about the old GE coils. Our service manager
was a tech here for 18 yrs before becoming SM, and he swears he never
saw a single GE aluminum coil leak in those 18 years. Trane A/S has gone
back to an aluminum coil now. I put one in (A coil upflow furnace) with
a 19i cond a few weeks ago. Damn thing was about 30" tall. We had to use
one of the new "Clean effects" (I think that is the name) EACs instead
of a Space Guard to get that beast to fit in the closet. I think all of
the older coils that were short but thick like the old GEs removed more
latent than the new tall thin ones, but I guess this is progress. Now
they are using VS to try to help compensate. Personally I think we would
have been better off if they had mandated 10 SEER minimum 30 years ago.
One person nursing along an old 6 or 7 SEER is going to negate the
energy savings of 20 people going with 13 vs 12. We have already had at
least 2 people in the last month insist on replacing compressors in out
of warranty 10 SEER units, rather than replacing everything. Just my
$.02 Larry

Noon-Air

2006-04-18, 9:21 am

standard lineset size for Rheem 5 ton, R-410a heat pumps is 3/8, 1 1/8.

"lp13-30" <LP1330@webtv.net> wrote in message
news:8749-444471CC-1186@storefull-3155.bay.webtv.net...
> Interesting about 7/8 -3/8 not being right for a 5 ton 410 system. What
> does Trane A/S recommend? We had a Carrier class a couple of years or so
> ago, and as I recall that is exactly what they did recommend. They
> specifically said "Absolutely do not use a 1/2 liquid line--never
> ever-period" BTW, I agree about the old GE coils. Our service manager
> was a tech here for 18 yrs before becoming SM, and he swears he never
> saw a single GE aluminum coil leak in those 18 years. Trane A/S has gone
> back to an aluminum coil now. I put one in (A coil upflow furnace) with
> a 19i cond a few weeks ago. Damn thing was about 30" tall. We had to use
> one of the new "Clean effects" (I think that is the name) EACs instead
> of a Space Guard to get that beast to fit in the closet. I think all of
> the older coils that were short but thick like the old GEs removed more
> latent than the new tall thin ones, but I guess this is progress. Now
> they are using VS to try to help compensate. Personally I think we would
> have been better off if they had mandated 10 SEER minimum 30 years ago.
> One person nursing along an old 6 or 7 SEER is going to negate the
> energy savings of 20 people going with 13 vs 12. We have already had at
> least 2 people in the last month insist on replacing compressors in out
> of warranty 10 SEER units, rather than replacing everything. Just my
> $.02 Larry
>

gofish@gonefishin.net

2006-04-19, 5:21 am

On Mon, 17 Apr 2006 23:57:48 -0500, LP1330@webtv.net (lp13-30) wrote:

>Interesting about 7/8 -3/8 not being right for a 5 ton 410 system. What
>does Trane A/S recommend? We had a Carrier class a couple of years or so
>ago, and as I recall that is exactly what they did recommend. They
>specifically said "Absolutely do not use a 1/2 liquid line--never
>ever-period" BTW, I agree about the old GE coils. Our service manager
>was a tech here for 18 yrs before becoming SM, and he swears he never
>saw a single GE aluminum coil leak in those 18 years. Trane A/S has gone
>back to an aluminum coil now. I put one in (A coil upflow furnace) with
>a 19i cond a few weeks ago. Damn thing was about 30" tall. We had to use
>one of the new "Clean effects" (I think that is the name) EACs instead
>of a Space Guard to get that beast to fit in the closet. I think all of
>the older coils that were short but thick like the old GEs removed more
>latent than the new tall thin ones, but I guess this is progress. Now
>they are using VS to try to help compensate. Personally I think we would
>have been better off if they had mandated 10 SEER minimum 30 years ago.
>One person nursing along an old 6 or 7 SEER is going to negate the
>energy savings of 20 people going with 13 vs 12. We have already had at
>least 2 people in the last month insist on replacing compressors in out
>of warranty 10 SEER units, rather than replacing everything. Just my
>$.02 Larry

1/2" liquid- yes- only on extended length installs many years ago did
a 10 seer hp condenser 150' out in the farmers apple orchard.
everything inside 2" sched 40 pvc, underground.

Trane has had 1-1/8 standard on all its condensers for as long as i
can remember. (which grows shorter every passing year)

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