Tankless Water Heaters - Luxury Coach Lifestyles
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Old 08-07-2012, 07:58 PM   #1
2StrokeDiesel
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Default Tankless Water Heaters

I would like to eliminate the conventional water heater tank and go with a tankless water heater. I want a system that can provide enough hot water in a relatively short amount of time for several people to shower, shave, etc.
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Old 08-07-2012, 09:23 PM   #2
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depending on how you operate your coach (Park or boondocking) would be to choose an alternative. If you drive or run your generator quite a bit you could opt for a hot water tank which has an internal (marine) coil wherein you could circulate the hot water from your engine or generator and make hot water while that source is running.

Another choice would be, a solar heat exchanger on the roof, or remote (which would require a small circulating pump) which would ask Old Sol(The Sun) to heat your water for you. The downside of that is a well insulated storage tank, of some capacity, to retain the heated water.

There doesn't seem to be any easy or inexpensive choices that I know of.
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Old 08-07-2012, 09:32 PM   #3
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Wondering if the conventional small undersink tankless coil box would supply enough water fast enough ? Anybody have some input on this ?
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Old 08-07-2012, 10:19 PM   #4
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probably not enough for showers.
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Old 08-22-2013, 05:34 AM   #5
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I am considering one of these tankless water heaters in my 77, I see they are quite common in the rv world, has anyone tried one? most I have looked at are propane only, that would suit me fine.
I changed out the one in my house to a tankless and we like it, the only downside I have found is it does take a bit longer for it to reach the tap, but it never runs out.
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Old 08-22-2013, 02:25 PM   #6
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I have one in my Liberty along with a 20 gallon conventional water heater,we do not want to run out of hot water in the shower and this is plumed to the shower after the conventional water heater,it draws 38 amps on both legs of 240 volts if it is turned wide open.Liberty added this so it is only wired to work with the generator,so if I am plugged in I can start the gen after my wife gets out of the shower and never run out of hot water.It is so small it could be installed anywhere and they make different sizes,I will look at the label and report the brand later.
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Old 08-22-2013, 02:34 PM   #7
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If you have the Raritan water heater you can change out the electric element to a 2000 watt as long as your wiring is adequate. It's a common element found at Lowe's etc. I did this on my '93 and it helped the recovery rate compared to the standard 1250 watt element. Not a tankless but a simple and cheap thing to try first.
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Old 08-22-2013, 04:35 PM   #8
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I do have the Raritan and do not want to increase the wattage because the amperage draw while plugged in with 4 cruise airs running and other electrical items is around 35-40 continuous,my problem is showers one right after the other,I doubt that the 2000 watt element would help us much.I do agree that the recovery rate of the Raritan is slow,it draws about 10 amps on 110 volts.I did look at the tankless heater and it is a Titan and I think that it is manufactured in Florida,it has been in my coach for 5 years and has performed perfectly.
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Old 08-22-2013, 04:29 PM   #9
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That is an option I might try Forest, it is a raritan with a 1250 element, are the 2000 watt 110 volt also? I have my plumbing bay gutted and thought id change things up a bit, but you have me thinking. I have a webaso diesel heater I was thinking of installing also.
Jack I like your idea also, electric would be an easier hook up than LP, maybe I wont throw out the raritan quite yet.
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Old 08-22-2013, 04:41 PM   #10
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I spoke with Raritan a couple years back when the original element burnt out. They said it was a common element and a 2000 would work. They also said it could be converted to a 240v unit by redoing the wiring and using a 240v element. So that may be another option to get a faster recovery. But I'd check with them.
Here is an email I received from Kim at Raritan Engineering:
Hi Forest you can change to a 240V element the witing is just a bit different, you would need to consult the manual for the difference in the 240 Wiring but other than that there is nothing else you would need to do.

Please let me know if you require additional info.

THanks
Kim

Here is the link for the owners manual:
http://www.raritaneng.com/pdf_files/water_heater/L206v0911.pdf
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