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Author Topic: Water tank issues  (Read 1438 times)
ron.dittmer
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« Reply #30 on: August 17, 2011, 12:27:25 pm »

If you run the electric water heater without water in the tank, you will burn out the heating element faster than you can read this post.
Actually the hot water heater still holds about 1/2 gallon of water after it is completely drained.

My water heater stopped working off 110v a couple years back.  I first made sure the tank was drained.  When I unscrewed the 110V heating element, the water kept coming and coming.  Many towels were not enough.  I called the water tank manufacture to order a new element.  The fellow confirmed the tank permanently holds 1/2 gallon of water after it is completely drained, intentionally so to protect the heating element from accidental burn-out.  I asked about concern of freezing and he said that was considered in the design of the tank.

If you need to replace your 110v heating element, stuff as many towels as you can under it, and all around on the floor, because once the element comes out, the wave of water comes and comes and comes.  I thought I had plenty of absorbsion but underestimated.  I ended up blowing a fan in that cabinet for a week to assure all was completely dry.
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Ron Dittmer (wife Irene) 2007 Model 2350 Without A Slideout
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TomHanlon
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« Reply #31 on: August 17, 2011, 02:50:24 pm »

Hi Ron,

I understand what the fellow told you about the water in the tank saving the element, but you having to replace your element after only a couple of years says something also. I only know that the shop at the dealer where I worked got in several heaters per year from those that ran the electric with the tank empty. They told me never to do that and I have never had to replace a heating element. I guess we got two different story to sort through. Maybe someone else can clear this up for us.  pulling hair out
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ron.dittmer
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« Reply #32 on: August 17, 2011, 03:55:06 pm »

I did not mean to imply that it is fine to leave the "electric" hot water heater switch on all the time while plugged in.  Only that if you forget to turn it off during setup, you do have an undefined "grace" period.
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Ron Dittmer (wife Irene) 2007 Model 2350 Without A Slideout
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Barry-Sue
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« Reply #33 on: August 17, 2011, 07:38:54 pm »

My understanding is that you only have a few seconds before you burn out the heating element with an empty tank.  This information came from a dealer when we bought our first travel trailer.

I always turn the water heater off at the circuit breaker before I drain the tank for the winter.  Also, I always confirm the breaker label and mark it in red when I get a new RV.

Don't need a senior moment when I'm de-winterizing on the road.

Barry
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