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Old 02-09-2013, 11:59 AM   #29
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1977 31' Excella 500
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Project is going well. The hot water heater is basically installed. I don't think it is much different than a normal water heater installed except it needs 12 volt power. I tapped a line nearby for the time being and hard wired it. The install instructions show a switch in line and I think it is a normal atwood switch with a light. I bought one and have not yet hooked it up as,I don't have a place to mount it as the bathroom is being rebuilt.

Considering the bathroom rebuild, I have not tested it extensively yet but it seems to be working well just for hot water for dishes or washing hands/face. The shower rebuild is almost complete so I will be using it more extensively soon. Just need to seal up the new woodwork to protect it from the moisture and there is some caulking to do in the shower as well.

I painted the outside door to the atwood that came in white with some silver metallic paint and am quite pleased with how it came out. Will have to post a photo. My trailer exterior needs polishing and clear coat removal from peeling so if you have a perfect/polished trailer it might not blend in as well with just paint. One idea that crossed my mind was checking to se if they have any of that vinyl car wrap material that would match different finishes people may have. Wish I could tell you what the door was made out of and if it was aluminum that could be polished.

Aside from all that, I still need to plumb the recirculating line. Just has not been a priority since my shower isn't yet finished. I bought a 12 volt solenoid valve so I can make the recirculating work by a switch or button. Some RV people who have done the recirculating thing automate it with timers and temp sensors too. Not sure if I will go that far right off, but it would be cool to have buttons to preheat the water near sinks and maybe a switch to turn on recirculation for the entire time someone is in the shower. I suppose pressing the button durning a navy shower would work too... Just hit it 10 seconds or so before you are ready to resume the shower. That would save a little power and propane of just letting it run. Maybe use marine switches that factor in some use around water? Not much shock risk regardless, I wouldn't think.

Overall, I'm quite happy with the unit and am thrilled the depth is less than a normal unit so when we rebuild the vanity it won't require a funky intrusion from the back into my side bath.
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Old 02-09-2013, 12:04 PM   #30
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1977 31' Excella 500
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Also, I'm going to add an accumulating pressure tank to the system to try to get better and more consistent water pressure when not on shore water. As I may ave mentioned, I think the water system works better with a normal water heater tank in the line but adding a cheap, separate tank should be easy and will overcome that quirk. So in the end, I don't think there will be any drawbacks to tankless vs. normal tank heater and there will be several very nice positives.
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Old 02-09-2013, 12:07 PM   #31
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Here is a cross link to a thread about the pressure accumulator that I started. Interesting contributions from others...


http://www.airforums.com/forums/f163...or-100341.html
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Old 02-09-2013, 01:05 PM   #32
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Here is a pic of the painted door.


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Old 02-13-2013, 02:25 PM   #33
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Have been following this thread with a lot of interest...will be anxious to see satisfaction levels after a few years. My first experience with this type of hot water was living in Europe where the "gas geyser" was the norm. It worked fine except for the reduced water flow...it does provide endless hot water but I wonder about the reduced versatility of gas only hot water. I have found that the ability to go to electric hot water when I'm in a park (or at home where I have a 30amp hookup) makes a lot of sense.
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