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Old 03-11-2013, 09:47 PM   #1
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Backfeeding water heater

My wife and I are currently full timing in a set location. We also have a 12x24 building we're parked by. Inside the building, we have full size appliances including a water heater. I have been rolling the possibilities of back feeding the water heater with the full size water heater for more bathing capacity etc. Have any of you done this before? I realize that I could tap into the hot water lines at any point but I'd rather connect to the drain plug on the water heater so as not to damage the insulation and sealed bottom. Let me hear some thoughts.

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Old 03-11-2013, 10:14 PM   #2
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Can't think of any reason why it would not work.
Cold inlet turned off at the tank, hot water from building supplied to drain, however you would have to leave the RV hot water heater turned on or you'll be running taps in the RV till the tank ( 6 or 10 gal ) gets filled with hot water from the building. Insulate the supply hose well or there could be a sudden shock when the cool water from the hose comes into the shower.

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Old 03-12-2013, 06:27 AM   #3
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That was my idea. I would leave the electric portion of my 6gal Atwood heater on.
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Old 03-12-2013, 09:36 AM   #4
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Be Careful HOT WATER can be dangerous! Use plumbing rated for temperature and pressure, not garden hose.
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Old 03-12-2013, 09:45 AM   #5
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Originally Posted by rgvtexan View Post
Be Careful HOT WATER can be dangerous! Use plumbing rated for temperature and pressure, not garden hose.
You can buy hot water rated garden hose at any good supply store. A little pricey but better hose for hot or cold use.
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Old 03-12-2013, 02:18 PM   #6
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My Dad has a household 30gal water heater connected to the trailer. His is spliced into the water lines, but the drain sounds like a good idea (easy to remove if ever required). He has also ran copper tubing (insulated), rated garden hose could work though. Good luck.
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Old 03-12-2013, 08:34 PM   #7
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I hooked it up to the drain today and shut off the cold water valve, isolating it from the cold water coming from the trailer. It's working great so far!
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Old 03-13-2013, 07:37 AM   #8
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