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Old 02-06-2008, 03:02 PM   #1
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Question Instant tankless waterheaters

I was wondering if anyone has done any research on these, I would love to have more hot water, we live full time and are parked and skirted, I was wondering if it is worth the investment.
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Old 02-06-2008, 03:05 PM   #2
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Lots of current draw for shower quality hot water. The under-sink models that get the water very warm are still pushing the RV current load capibilities.
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Old 02-06-2008, 05:14 PM   #3
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amperage draw was why we didnt choose to add one in ours.
1st the 120 volts models can pull 75 amps
and the 230 volt models go upwards of 25-30 amps

even a 50 amp rv cord and breaker box just inst going t cover the load
a 50 amp service is two 120 volt lines with 50 amps available on each line, technically you do have 230 volts , but you would not have any power left over for anything else and the park pedastal might just do a melt down
However if your a park model and set in, you might be able to work a deal to get a separate power line off the parks main line and run a you a 230 circuit thats dedicated the water heater.

this being said i did find a few that might be suitable depending on your water flow requirments
this one is 230 vlts and needs three LIVES plus an earth ground. OUCH
67amps


120volt 29 amp


if you do decide to do it
please do a write up or MOD for all us Rvers
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Old 02-06-2008, 08:35 PM   #4
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What about the RV500 propane tankless heater? Has anyone used one of those? Here's a link: http://www.gaswaterheaters.com/boats...V500/index.htm
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Old 02-06-2008, 08:38 PM   #5
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I know that Bosch make's a model that requires no power. It used to be sold at Home Depot but i noticed it is not there anymore. My brother in law installed one at his friend's cabin far north (we are plumbers). The flow of the water creates dc power, which powers the gas valve and safeties. Maybe do some digging and you'll come up with a place that sells them....................
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Old 02-06-2008, 09:43 PM   #6
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Quote:
Originally Posted by Todddob View Post
I know that Bosch make's a model that requires no power. It used to be sold at Home Depot but i noticed it is not there anymore. My brother in law installed one at his friend's cabin far north (we are plumbers). The flow of the water creates dc power, which powers the gas valve and safeties. Maybe do some digging and you'll come up with a place that sells them....................
thats a ticket right there, use the electromotive force of speeding molecules. very NASA .

I like it
i did see the gas fired heaters,
an ingenous person could use that waste heat to heat the rv or make electricity
lp powered
this ne needs 120 volts to light the sparker.....and pricey, but
less money
i fully support green technology
thanks the input
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Old 02-06-2008, 10:12 PM   #7
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http://www.boschhotwater.com/BoschMo...4/Default.aspx

This does sound interesting. Don't know about mounting, though. Maybe some of you plumbers could advise.
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Old 02-06-2008, 10:50 PM   #8
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Maybe could be mounted at the back of a closet, and direct vented straight back off the top of the heater. Run a propane line to it and re-rout some water lines to it. Nothing an afternoon and a dozen beer couldn't solve. haha
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Old 02-06-2008, 11:06 PM   #9
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this is a doable project
it weighs 33 pounds or so
plus maybe 3 gallons of water
still puts it at less weight than a full 10 gallon heater ( 80 lbs plus or minus)
and the actual size is not to big either, it would easily fit in the basement when the old water heater is GONE

you guys should get the gold star for making us use our brains and think out side the norm for rvs
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Old 02-07-2008, 05:49 AM   #10
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Here where I work, we have an insta hot unit called I.S.E.[in-sink-erator]. There are two different models, W152 and W154. The W152 is a 2 1/2 gallon and the W154 is 4.0 gallon, they both are 1500 watts 12.5 amps @ 120 volts. They both have an adjustable thermostat 110-170 degrees F. This unit is made by Emerson Electric Company 4700 21st Street, Racine, Wis 53406. Toll free number 1-800-558-5700. We do have another one as well called a Titan but I don't have the manuel in front of me at the moment I have to locate it.
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