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Posted by Caya on April 14, 2007, 10:56 am
Can you clever folks tell me about this one? My husband did an
excellent job installing our tankless water heater. I was out of town
that weekend, but given his record for thoroughness, handiness with
tools, & researching how exactly to do something right, I believe he
put it all in right. It is this one right here:
http://www.hotwaterheater.com/model-h-28-4.htm
However, now I can't get a hot shower!! I had nice long hot showers
with the tank system, but now, nope!! It starts off and builds up to
scalding water pretty quickly, if I crank it all the way up. Then I
push it back down to the correct temperature. But then it quickly
tapers off after a minute or two, and the rest of the shower is
lukewarm! It will get a little hotter & then colder in turns, which is
also annoying; but never gets hot, even if I push it all the way back
to the maximum. It's definitely not a comfortable showering
temperature, even.
Any ideas?
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Posted by on April 14, 2007, 12:03 pm
> Can you clever folks tell me about this one? My husband did an
> excellent job installing our tankless water heater. I was out of town
> that weekend, but given his record for thoroughness, handiness with
> tools, & researching how exactly to do something right, I believe he
> put it all in right. It is this one right
here:http://www.hotwaterheater.com/model-h-28-4.htm
>
> However, now I can't get a hot shower!! I had nice long hot showers
> with the tank system, but now, nope!! It starts off and builds up to
> scalding water pretty quickly, if I crank it all the way up. Then I
> push it back down to the correct temperature. But then it quickly
> tapers off after a minute or two, and the rest of the shower is
> lukewarm! It will get a little hotter & then colder in turns, which is
> also annoying; but never gets hot, even if I push it all the way back
> to the maximum. It's definitely not a comfortable showering
> temperature, even.
>
> Any ideas?
If it's wired correctly, this sucker is supposed to pull 116 Amps and
deliver 3.3 gal/min
with a 60 deg rise in temp, or 3 gal/min with a 65 deg rise. If
you're incoming water is
around 40, which is a typical incoming winter temp in colder parts of
the country, then
it should be capable of giving you around 105, which is typical shower
range.
But, one has to wonder about how practical this really is. Typical
service for a new house
today is 200 Amp. And this one load is gonna suck up 116 of that.
If you start to figure
in AC, cooking, dryer, (maybe you have gas for cooking/dryer, but I'm
guessing not, otherwise
you probably would have used a gas tankless), the avail capacity could
be pretty much maxed out.
Back to your problem. Is it wired up correctly with two 60 amp
breakers? Measure the incoming
and outgoing water temps and flow rate and compare it to the flow
chart in the spec sheet. Make
sure your shower head is less than 3 gal a min. My guess is that it's
not wired up for max output.
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Posted by Roger Shoaf on April 14, 2007, 4:26 pm
Turn down the temperature on the water heater. What is happening is that as
you blend cold water to get the temperature right, the flow of water through
the heater slows to the point where it has insufficient flow and shuts off.
by turning down the temperature more water is permitted to flow through the
heater, as less cold is required to blend with the hot.
--
Roger Shoaf
About the time I had mastered getting the toothpaste back in the tube, then
they come up with this striped stuff.
> Can you clever folks tell me about this one? My husband did an
> excellent job installing our tankless water heater. I was out of town
> that weekend, but given his record for thoroughness, handiness with
> tools, & researching how exactly to do something right, I believe he
> put it all in right. It is this one right here:
http://www.hotwaterheater.com/model-h-28-4.htm
>
> However, now I can't get a hot shower!! I had nice long hot showers
> with the tank system, but now, nope!! It starts off and builds up to
> scalding water pretty quickly, if I crank it all the way up. Then I
> push it back down to the correct temperature. But then it quickly
> tapers off after a minute or two, and the rest of the shower is
> lukewarm! It will get a little hotter & then colder in turns, which is
> also annoying; but never gets hot, even if I push it all the way back
> to the maximum. It's definitely not a comfortable showering
> temperature, even.
>
> Any ideas?
>
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Posted by GWB on April 14, 2007, 6:36 pm
>Can you clever folks tell me about this one? My husband did an
>excellent job installing our tankless water heater. I was out of town
>that weekend, but given his record for thoroughness, handiness with
>tools, & researching how exactly to do something right, I believe he
>put it all in right. It is this one right here:
http://www.hotwaterheater.com/model-h-28-4.htm
>
>However, now I can't get a hot shower!! I had nice long hot showers
>with the tank system, but now, nope!! It starts off and builds up to
>scalding water pretty quickly, if I crank it all the way up. Then I
>push it back down to the correct temperature. But then it quickly
>tapers off after a minute or two, and the rest of the shower is
>lukewarm! It will get a little hotter & then colder in turns, which is
>also annoying; but never gets hot, even if I push it all the way back
>to the maximum. It's definitely not a comfortable showering
>temperature, even.
>
>Any ideas?
Start taking baths.
<g>
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Posted by hallerb@aol.com on April 14, 2007, 8:40 pm
>
>
>
>
>
> >Can you clever folks tell me about this one? My husband did an
> >excellent job installing our tankless water heater. I was out of town
> >that weekend, but given his record for thoroughness, handiness with
> >tools, & researching how exactly to do something right, I believe he
> >put it all in right. It is this one right
here:http://www.hotwaterheater.com/model-h-28-4.htm
>
> >However, now I can't get a hot shower!! I had nice long hot showers
> >with the tank system, but now, nope!! It starts off and builds up to
> >scalding water pretty quickly, if I crank it all the way up. Then I
> >push it back down to the correct temperature. But then it quickly
> >tapers off after a minute or two, and the rest of the shower is
> >lukewarm! It will get a little hotter & then colder in turns, which is
> >also annoying; but never gets hot, even if I push it all the way back
> >to the maximum. It's definitely not a comfortable showering
> >temperature, even.
>
> >Any ideas?
>
> Start taking baths.
> <g>- Hide quoted text -
>
> - Show quoted text -
former tankless owners say the 2 best days........
the first day its installed
the day its replaced with a standard tank.
Did you hubby upsize the gas line all the way to the meter? too small
a input line can cause this.
besides standard tanks like mine are 75K BTU
Your tankless is only 95K BTU
You my have ongoing hassles, sorry to give you bad news.
PLEASE REPORT BACK WETHER YOUR HAPPY O)R UNHAPPY WITH THIS TANKLESS
LONG TERM!
if your unhappy, consider using it as a pre heater for a standard
tank, by prte heating the incoming water to a standard tank you can
have a endless supply of nice hot water, at no extra fuel cost.
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