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Instant Water Heater

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Peter Crowl

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Oct 6, 2003, 1:53:35 PM10/6/03
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I'm thinking about removing the traditional 6 gallon WH from my RV and
replacing it with an instant water heater.
Aside from the obvious propane vs electric issue, are there any drawbacks to
the instant? Will they keep up with a shower?
Thanks
Peter


Joe L

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Oct 6, 2003, 2:14:46 PM10/6/03
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Take a look at Coleman "Hot Water On Demand"

http://www.coleman.com/coleman/ColemanCom/subcategory.asp?CategoryID=2200

It has no water tank but, instead, gets the water from whatever source you
put the hose into. It can be somewhat portable and self contained with its
own 12 volt battery and small propane bottle and claims to be able to heat
up 40 gallons before needing a recharge. It can also be tapped into your
trailer/car battery and propane tank to act as a regular heater. It has its
own temp control with "Cold, Warm, Hot settings which might be enough to
allow use of a single valve faucet for all uses. At $180 it is certainly
cheap enough.

You can download a PDF manual on the site.

No personal expierence to relate but the design looks interesting.

"Peter Crowl" <pcr...@earthlink.net> wrote in message
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Chris Bryant

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Oct 6, 2003, 4:41:48 PM10/6/03
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Are you talking about the little "insinkerator" type or a full fledged
tankless? The insinkerator type cannot be used in this application, and
the electric tankless draw a *lot* of power.
But.. if you just really want a lot of hot water, have the room abd don't
mind the price, have you looked at the Precisiontemp RV500?-
http://66.161.146.46/RV-500Page1.html
It *will* give you as much hot water as you want, heat the water to
whatever temperature you want and regulate that temperature (it has a
modulating gas valve which will turn the flame up and down to maintain the
correct temperature).

--
Chris Bryant
http://bryantrv.com


"Half-Canadian"

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Oct 6, 2003, 5:09:46 PM10/6/03
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"Peter Crowl" <pcr...@earthlink.net> wrote in message
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I have a slide-in camper that doesn't have a water heater installed --
instead I use a Zodi propane water heater. www.zodi.com Their model
with two burners puts out plenty of hot water, even for winter camping here
in the west. You can also purchase these at a discounted price from Zodi
through Ebay -- they sell their trade show demo products at quite a savings.

Laurie in BC


ttt

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Oct 7, 2003, 11:55:04 PM10/7/03
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Bosch
http://www.controlledenergy.com/html/aquastar/38b.html

Takagi
http://www.solardyne.com/solardyne/taktktanwath.html

Paloma
http://www.backwoodssolar.com/Catalogpages2/non-elec2.htm#Paloma%20image

http://www.worldwaterheaters.com/displaycat.asp?cat1=Finished&cat=Instant+Water+Heater
you will notice that almost the entire rest of the world uses tankless
water heating that only heats on demand. It is not exotic or odd technology.

"Peter Crowl" <pcr...@earthlink.net> wrote in message
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Tom Marik

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Oct 8, 2003, 8:10:12 AM10/8/03
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<< You will notice that almost the entire rest of the world uses tankless water

heating that only heats on demand. It is not exotic or odd technology. >>

Why are the RV manufacturers so reluctant to install them?

Tom M

Chris Bryant

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Oct 8, 2003, 8:34:26 AM10/8/03
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The only model listed for RV use is the Precision Temp, and it is pretty
expensive.
Also- to some extent- RV appliances are built by only a few companies-
heating appliances by two. RV OEMs will get much better pricing if they
use all Atwood (water heater furnace and stove) or Suburban (water heater
furnace and stove).

Will Sill

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Oct 8, 2003, 8:40:58 AM10/8/03
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Many CG power sources cannot handle the power requirement.

Will Sill

Tom Marik

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Oct 8, 2003, 8:36:57 PM10/8/03
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<< Why are the RV manufacturers so reluctant to install them?>>

<<The only model listed for RV use is the Precision Temp, and it is pretty
expensive. >>

The excuse has been reliability. Chris, do you beliee the Precision Temp has
problems?

Tom M

Neon John

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Oct 8, 2003, 11:57:54 PM10/8/03
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True. Plus yet another problem. Freezing must be managed somehow. There is
very little thermal mass in a tankless heater and a lot of exposed piping if
the thing is installed outside like a regular RV heater. That's probably why
Paloma quit making an RV/marine unit. I have a lot of experience with Paloma
and I can vouch for just how fast one will freeze if exposed. Their cold
weather kit helps a little but requires shore power. The only practical
solution is to install the thing in conditioned spaces. Not terribly
practical in an RV.

John


---
John De Armond
johngdDO...@bellsouth.net
http://bellsouthpwp.net/j/o/johngd/
Cleveland, Occupied TN

Robert F. Thomas

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Oct 9, 2003, 12:19:09 AM10/9/03
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the sink (kitchen) i our 24' 1992 tioga has no spray....wonder if one
could change it to one with and would that work with th pump?


ROBERT F. THOMAS

http://community.webtv.net/gator45/NAVIGATIONDEPTUSS

HHamp5246

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Oct 9, 2003, 9:33:50 AM10/9/03
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In article <10182-3F8...@storefull-2311.public.lawson.webtv.net>,

gat...@webtv.net (Robert F. Thomas) writes:

>the sink (kitchen) i our 24' 1992 tioga has no spray....wonder if one
>could change it to one with and would that work with th pump?

I changed my Moen faucet, in my trailer, out for a Kohler with a pull out spray
model.

It's not a separate sprayer on the side, the whole thing pulls out. You can
also press a button to change from a stream to a spray.

It was easy to change.

Hunter
http://members.aol.com/airstm2268/roadtrip2003.htm

GBinNC

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Oct 9, 2003, 8:46:25 PM10/9/03
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On 09 Oct 2003 13:33:50 GMT, hham...@aol.comnojunk (HHamp5246)
wrote:

>I changed my Moen faucet, in my trailer, out for a Kohler with a pull out spray
>model.

><snip>


>It was easy to change.

Hmmm. My remembery says it was hard as heck -- and you asked for help
here and learned a thing or two about plumbing in the process. <g>

GB in NC

HHamp5246

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Oct 9, 2003, 9:17:59 PM10/9/03
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In article <93jbovgj762r4m2lo...@4ax.com>, GBinNC
<GBi...@yahoooo.com> writes:

>Hmmm. My remembery says it was hard as heck -- and you asked for help
>here and learned a thing or two about plumbing in the process. <g>

Yabut, that was the same faucet when I put it in the cabin in Tennessee....when
I burned my arm and put my tooth through my lip... and had to go to Home depot
3 times...four days later it was almost perfect. If you don't count the little
drip, but that's what buckets are for.

By the time I put one in the trailer I was a pro.

The only problem was getting the hot and cold copper things to meet.
I did get it though, now the cold side is hot and the hot side is cold.

It was Christmas Eve. (c:

Hunter
http://members.aol.com/airstm2268/roadtrip2003.htm

bill horne

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Oct 10, 2003, 2:48:08 AM10/10/03
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can...@sbcglobal.net wrote:
>
> On 10 Oct 2003 01:17:59 GMT, hham...@aol.comnojunk (HHamp5246)

> wrote:
>
> >It was Christmas Eve. (c:
> >
> >Hunter
>
> I must be a natural born humbug, because my memories of Christmas Eve
> when the kids were small center on a jug of Bacardi egg nog, a bicycle
> with assembly instructions in colloquial Chinglish, and bits and
> pieces that were forever getting lost under the tree somewhere.
>
> But I also remember that as the level in the jug went down, my
> brilliance and engineering talents rose in direct proportion. Somehow
> it always came together in the end, with some mighty happy kids in the
> morning.
>
> I miss those days.
>
> Canoli

You seem to be getting maudlin here in the wee hours. Have some more
nog.

--
bill
Theory don't mean squat if it don't work.

HHamp5246

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Oct 10, 2003, 10:48:22 AM10/10/03
to
In article <uahcovo3i6asju70f...@4ax.com>, can...@sbcglobal.net
writes:

>
>I must be a natural born humbug, because my memories of Christmas Eve when the
kids were small center on a jug of Bacardi egg nog, a bicycle with assembly
instructions in colloquial Chinglish, and bits and pieces that were forever
getting lost under the tree somewhere.>

Why would that make you a humbug? I have the same memories of Christmas Eve
when my daughter was still at home.

Hunter
http://members.aol.com/airstm2268/roadtrip2003.htm

bill horne

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Oct 10, 2003, 2:01:18 PM10/10/03
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I dunno. Maybe you're both humbugs.

bill.weaver1@comcastdotnet

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Oct 30, 2003, 12:42:17 AM10/30/03
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in article sULgb.61447$%h1.44922@sccrnsc02, ttt at t...@spamless.com wrote on
10/7/03 9:55 PM:

I have done exactly what you are asking about, with good succes. I had a
bit of trouble at first with the electronic controls going into a pulsing
problem which seemed to be related to a flow sensor not functioning
correctly, but after replacing the board, I have had no problem. And yes,
it does keep up with a shower. I even had the restrictors taken out of the
water line, so we could have more flow through the shower, and it still
keeps up with the shower needs. It is the PrecisionTemp unit for RVs and it
is such a joy to have long showers with continuous hot water. I forget how
much it cost, but I can tell you the price was worth it to keep the missus
happy, and me too for that matter. Go for it.
Bill

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