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Subject Author Date
American Standard Air Handlers Kunta Kinte 12-11-2007
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Posted by Kunta Kinte on December 11, 2007, 11:11 am
Anybody have any experience using AS A/Hs in a Hydro-Air set up?
My contractor says he'll use an A/H air handler and a seperate coil
for the hydro/
Was your experience positive -- or is this patch job?

My first contractor spec'd a First Co. A/H. which is an all-in-one
unit.

Posted by Zyp on December 11, 2007, 12:19 pm
Kunta Kinte wrote:
> Anybody have any experience using AS A/Hs in a Hydro-Air set up?
> My contractor says he'll use an A/H air handler and a seperate coil
> for the hydro/
> Was your experience positive -- or is this patch job?
>
> My first contractor spec'd a First Co. A/H. which is an all-in-one
> unit.

Provding he uses Manual D to design the correct static. It is my
understanding that Hydro should be matched to A/H that have 2" w.c. static.
[Using smaller duct systems.]

First Company coils are at most an 'economy' coil and can only handle less
than 1" w.c. static [which is standard for most residential systems.]

I have limited experience with hydronic heating coils.

-
Zyp



Posted by Kunta Kinte on December 11, 2007, 5:21 pm

Thanks. that gives me something to chew on.
So they should be matched is paramount
And then, anything above 1" is desirable?
B
>Provding he uses Manual D to design the correct static. It is my
>understanding that Hydro should be matched to A/H that have 2" w.c. static.
>[Using smaller duct systems.]
>
>First Company coils are at most an 'economy' coil and can only handle less
>than 1" w.c. static [which is standard for most residential systems.]
>
>I have limited experience with hydronic heating coils.
>
>-
>Zyp
>

Posted by Zyp on December 11, 2007, 8:25 pm
Kunta Kinte wrote:
> Thanks. that gives me something to chew on.
> So they should be matched is paramount
> And then, anything above 1" is desirable?
> B
>> Provding he uses Manual D to design the correct static. It is my
>> understanding that Hydro should be matched to A/H that have 2" w.c.
>> static. [Using smaller duct systems.]
>>
>> First Company coils are at most an 'economy' coil and can only
>> handle less than 1" w.c. static [which is standard for most
>> residential systems.]
>>
>> I have limited experience with hydronic heating coils.
>>
>> -
>> Zyp

I would contact the manufacturer and see what [if any] recommended
combinations they attribute to.

--
Zyp



Posted by Bob Pietrangelo on December 12, 2007, 8:55 pm
AS/Trane has matching water coils for their equipment. MAke sure you have
the proper load and properly sized ducts. This a great setup. What kind of
boiler are you feeding the coils with and which SEER AS equipment

--
Bob Pietrangelo
bobp3@comcast.net (home)
bob@comfort-solution.biz (work)
www.comfort-solution.biz





> Anybody have any experience using AS A/Hs in a Hydro-Air set up?
> My contractor says he'll use an A/H air handler and a seperate coil
> for the hydro/
> Was your experience positive -- or is this patch job?
>
> My first contractor spec'd a First Co. A/H. which is an all-in-one
> unit.



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