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Posted by ransley on December 2, 2008, 8:33 am
> In a hydronic floor heat system, what is the best way to heat the water
> in the pex tubing?
> The initial study of the building design recommends a 16800 BTU 85%
> efficient boiler ($2000 US). =A0I am hearing about possibly a more
> efficient way using two 90% efficient 60 gal water heaters.
> Can anyone make some suggestions to me? =A0I live in Northern Colorado.
> Project description:
> 42 x 80 Pole style building, single level (metal siding + metal roof),
> 12 ft side walls
> FLOOR: =A01 1/2" "Blue board" foam insulation on top of pea gravel - 5"
> concrete slab w/ pex tubing on 12" centers - 3 zones (3750' of 1/2"
> tubing in approx 250' runs
> INSULATION: Walls- R-26 -- Ceiling- R-38
> Thanks!
Is this a troll, 16800 Btu has to be a typo, you do mean 168000 I
hope I hope. You want efficency and you discuss 85% efficent boilers
when up to 98% are made !! What boiler are you looking at.
Tell us all who makes a 90% efficent tank water heater... Answer
nobody makes a 90% efficent fossil fuel water tank. Learn about EF-
Energy Factor ratings, and show us the tank. And a tank isnt designed
for long life but it truely aint efficent.
1.5" Blueboard is R 7.5,, 1.5" foil faced Polyisocyanurate is R
10.5 with an added radiant barrier, which is still not optimal R value
for concrete radiant heat.
Walls R 26, Ceiling R38, it sounds off. What is construction and
type of insulation You have lots a learnin to do wilma fingerdo, cause
someones lyin to you.
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Posted by Voyager on December 2, 2008, 12:28 pm
ransley wrote:
>> In a hydronic floor heat system, what is the best way to heat the water
>> in the pex tubing?
>> The initial study of the building design recommends a 16800 BTU 85%
>> efficient boiler ($2000 US). I am hearing about possibly a more
>> efficient way using two 90% efficient 60 gal water heaters.
>> Can anyone make some suggestions to me? I live in Northern Colorado.
>> Project description:
>> 42 x 80 Pole style building, single level (metal siding + metal roof),
>> 12 ft side walls
>> FLOOR: 1 1/2" "Blue board" foam insulation on top of pea gravel - 5"
>> concrete slab w/ pex tubing on 12" centers - 3 zones (3750' of 1/2"
>> tubing in approx 250' runs
>> INSULATION: Walls- R-26 -- Ceiling- R-38
>> Thanks!
>
> Is this a troll, 16800 Btu has to be a typo, you do mean 168000 I
> hope I hope. You want efficency and you discuss 85% efficent boilers
> when up to 98% are made !! What boiler are you looking at.
>
> Tell us all who makes a 90% efficent tank water heater... Answer
> nobody makes a 90% efficent fossil fuel water tank. Learn about EF-
> Energy Factor ratings, and show us the tank. And a tank isnt designed
> for long life but it truely aint efficent.
You seem pretty sure of yourself ... for being wrong.
http://www.americanwaterheater.com/products/pdf/lpg100.pdf
> 1.5" Blueboard is R 7.5,, 1.5" foil faced Polyisocyanurate is R
> 10.5 with an added radiant barrier, which is still not optimal R value
> for concrete radiant heat.
>
> Walls R 26, Ceiling R38, it sounds off. What is construction and
> type of insulation You have lots a learnin to do wilma fingerdo, cause
> someones lyin to you.
More than one person is lying to Wilma.
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Posted by ransley on December 2, 2008, 2:18 pm
> ransley wrote:
> >> In a hydronic floor heat system, what is the best way to heat the wate=
r
> >> in the pex tubing?
> >> The initial study of the building design recommends a 16800 BTU 85%
> >> efficient boiler ($2000 US). =A0I am hearing about possibly a more
> >> efficient way using two 90% efficient 60 gal water heaters.
> >> Can anyone make some suggestions to me? =A0I live in Northern Colorado=
.
> >> Project description:
> >> 42 x 80 Pole style building, single level (metal siding + metal roof),
> >> 12 ft side walls
> >> FLOOR: =A01 1/2" "Blue board" foam insulation on top of pea gravel - 5=
"
> >> concrete slab w/ pex tubing on 12" centers - 3 zones (3750' of 1/2"
> >> tubing in approx 250' runs
> >> INSULATION: Walls- R-26 -- Ceiling- R-38
> >> Thanks!
> > =A0 =A0Is this a troll, =A016800 Btu has to be a typo, you do mean 1680=
00 I
> > hope I hope. You want efficency and you discuss 85% efficent boilers
> > when up to 98% are made !! =A0What boiler are you looking at.
> > =A0 Tell us all who makes a 90% efficent tank water heater... Answer
> > nobody makes a 90% efficent fossil fuel water tank. Learn about EF-
> > Energy Factor ratings, and show us the tank. And a tank isnt designed
> > for long life but it truely aint efficent.
> You seem pretty sure of yourself ... for being wrong.http://www.americanw=
aterheater.com/products/pdf/lpg100.pdf
> > =A0 1.5" Blueboard is R 7.5,, =A01.5" foil faced Polyisocyanurate is R
> > 10.5 with an added radiant barrier, which is still not optimal R value
> > for concrete radiant heat.
> > =A0 Walls R 26, Ceiling R38, it sounds off. =A0What is construction and
> > type of insulation You have lots a learnin to do wilma fingerdo, cause
> > someones lyin to you.
> More than one person is lying to Wilma.- Hide quoted text -
> - Show quoted text -
I see your as dumb as her if you dont know facts. Gees, what ignorant
folks believe.
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Posted by Voyager on December 2, 2008, 2:46 pm
ransley wrote:
>> ransley wrote:
>>>> In a hydronic floor heat system, what is the best way to heat the water
>>>> in the pex tubing?
>>>> The initial study of the building design recommends a 16800 BTU 85%
>>>> efficient boiler ($2000 US). I am hearing about possibly a more
>>>> efficient way using two 90% efficient 60 gal water heaters.
>>>> Can anyone make some suggestions to me? I live in Northern Colorado.
>>>> Project description:
>>>> 42 x 80 Pole style building, single level (metal siding + metal roof),
>>>> 12 ft side walls
>>>> FLOOR: 1 1/2" "Blue board" foam insulation on top of pea gravel - 5"
>>>> concrete slab w/ pex tubing on 12" centers - 3 zones (3750' of 1/2"
>>>> tubing in approx 250' runs
>>>> INSULATION: Walls- R-26 -- Ceiling- R-38
>>>> Thanks!
>>> Is this a troll, 16800 Btu has to be a typo, you do mean 168000 I
>>> hope I hope. You want efficency and you discuss 85% efficent boilers
>>> when up to 98% are made !! What boiler are you looking at.
>>> Tell us all who makes a 90% efficent tank water heater... Answer
>>> nobody makes a 90% efficent fossil fuel water tank. Learn about EF-
>>> Energy Factor ratings, and show us the tank. And a tank isnt designed
>>> for long life but it truely aint efficent.
>> You seem pretty sure of yourself ... for being
wrong.http://www.americanwaterheater.com/products/pdf/lpg100.pdf
>>> 1.5" Blueboard is R 7.5,, 1.5" foil faced Polyisocyanurate is R
>>> 10.5 with an added radiant barrier, which is still not optimal R value
>>> for concrete radiant heat.
>>> Walls R 26, Ceiling R38, it sounds off. What is construction and
>>> type of insulation You have lots a learnin to do wilma fingerdo, cause
>>> someones lyin to you.
>> More than one person is lying to Wilma.- Hide quoted text -
>> - Show quoted text -
>
> I see your as dumb as her if you dont know facts. Gees, what ignorant
> folks believe.
What part of the Polaris efficiency specification did you not understand?
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Posted by ransley on December 3, 2008, 10:22 am
> ransley wrote:
> >> ransley wrote:
> >>>> In a hydronic floor heat system, what is the best way to heat the wa=
ter
> >>>> in the pex tubing?
> >>>> The initial study of the building design recommends a 16800 BTU 85%
> >>>> efficient boiler ($2000 US). =A0I am hearing about possibly a more
> >>>> efficient way using two 90% efficient 60 gal water heaters.
> >>>> Can anyone make some suggestions to me? =A0I live in Northern Colora=
do.
> >>>> Project description:
> >>>> 42 x 80 Pole style building, single level (metal siding + metal roof=
),
> >>>> 12 ft side walls
> >>>> FLOOR: =A01 1/2" "Blue board" foam insulation on top of pea gravel -=
5"
> >>>> concrete slab w/ pex tubing on 12" centers - 3 zones (3750' of 1/2"
> >>>> tubing in approx 250' runs
> >>>> INSULATION: Walls- R-26 -- Ceiling- R-38
> >>>> Thanks!
> >>> =A0 =A0Is this a troll, =A016800 Btu has to be a typo, you do mean 16=
8000 I
> >>> hope I hope. You want efficency and you discuss 85% efficent boilers
> >>> when up to 98% are made !! =A0What boiler are you looking at.
> >>> =A0 Tell us all who makes a 90% efficent tank water heater... Answer
> >>> nobody makes a 90% efficent fossil fuel water tank. Learn about EF-
> >>> Energy Factor ratings, and show us the tank. And a tank isnt designed
> >>> for long life but it truely aint efficent.
> >> You seem pretty sure of yourself ... for being wrong.http://www.americ=
anwaterheater.com/products/pdf/lpg100.pdf
> >>> =A0 1.5" Blueboard is R 7.5,, =A01.5" foil faced Polyisocyanurate is =
R
> >>> 10.5 with an added radiant barrier, which is still not optimal R valu=
e
> >>> for concrete radiant heat.
> >>> =A0 Walls R 26, Ceiling R38, it sounds off. =A0What is construction a=
nd
> >>> type of insulation You have lots a learnin to do wilma fingerdo, caus=
e
> >>> someones lyin to you.
> >> More than one person is lying to Wilma.- Hide quoted text -
> >> - Show quoted text -
> > I see your as dumb as her if you dont know facts. Gees, what ignorant
> > folks believe.
> What part of the Polaris efficiency specification did you not understand?=
- Hide quoted text -
> - Show quoted text -
Polaris, Ao Smith, condensing, are not 94-96% efficent. www.energystar.gov
publishes efficency ratings for all tanks made. Efficency of a tank is
rated as EF or Energy Factor, the number rating of 85 means 85 cents
of every dollar you spend heats the water. I have a $2000.00 Ao Smith
Cyclone condensing tank of thermal and burner efficency of 93% but its
EF rating is about 83, and all boilers are at least 82% efficent
today. 95 or so % of all Tank water heaters sold today in the US even
the ones labeled High Efficency are in fact only 55-65 EF. The
government still hasnt set a standard yet, its a scam to the
uneducated. The lowest gas tankless is 83 EF and a condensing Takagi
is 93EF. that is the highest efficency water heater I know of made
today, so what you see is most always no better than 55-65 EF or 45-55
cents of every dollar you spend heating water goes up the chimney !
Boilers can be much more efficent, the AFUE ratings reflect use,
like EF rating does on tanks. There are many 93-96% efficent Ng
condensing boilers out, that are the best for Radiant tube sine
Radiant uses realtivly low water temps and Condensing boilers drop
dramaticly in efficency at over 140F, there is one I know of from
canada that is AFUE 98% efficent, and the best tank is maybe 83 EF
that I know of.
EF is not a rating Tank manufacturers publish often, or like to talk
about, because it highlights tank limitations in true efficency
OP doesnt discuss Condensing units, but is in fact looking at 83%
boilers, when 96 is easily avalaible, and most likely is looking at
Two, 55-65 EF tank, now thats a waste of money. First 2 tanks would be
less efficent than one and she doesnt need 2, but tank are not
designed to last as home heaters.
The last I read Energy Star is still working on a tank
specification.
Op is best with a 96-98% AFUE condensing boiler, not a 55-65 %
efficent water tank made for showers. Find the EF rating on Polaris
and post it, Ao Smiths site wont post all EF numbers on their super
expensive Condensing units, but I own one.
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> in the pex tubing?
> The initial study of the building design recommends a 16800 BTU 85%
> efficient boiler ($2000 US). =A0I am hearing about possibly a more
> efficient way using two 90% efficient 60 gal water heaters.
> Can anyone make some suggestions to me? =A0I live in Northern Colorado.
> Project description:
> 42 x 80 Pole style building, single level (metal siding + metal roof),
> 12 ft side walls
> FLOOR: =A01 1/2" "Blue board" foam insulation on top of pea gravel - 5"
> concrete slab w/ pex tubing on 12" centers - 3 zones (3750' of 1/2"
> tubing in approx 250' runs
> INSULATION: Walls- R-26 -- Ceiling- R-38
> Thanks!