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Old 05-01-2015, 12:04 PM   #1
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Newbie questions on first time water hookup

I will be hooking up the water for the first time so we can understand it's workings before our first ever trip next weekend.

When we turn on the water, does it automatically fill the tank that needs heated or is there something I need to do to first?

Do we need to leave any faucets open to get any air out when the water is first turned on?

I see where to turn the water heater on, but how do I get the electric and gas at the same time if I want to?

I do have a pressure regulator.

Thanks in advance.
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Old 05-01-2015, 12:44 PM   #2
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This is what I do.

1) Make sure the by-pass, if equipped, for the water heater is not in by-pass mode.
2) Close all faucets
3) Make sure the house water filter housing is snug. I'd do the first fill without the filter since I'd disinfect the system. (This is a different procedure)
4) Slowly turn on the shore water.
5) Inspect for leaks.
6) Open a hot water faucet to purge air.
7) Check hot water tank for water by lifting the relief valve slowly (on tank). Confirm water is present. With a full tank it's safe to energize the water heater.
8) Confirm water is available at all faucets.
9) Check for leaks.
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Old 05-01-2015, 12:48 PM   #3
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If equipped, open the by-pass valve at the hot water heater (feed line) and close the drain on the hot water heater. Regarding water tank, that's filled via a separate opening and you might not want a full tank when towing (extra weight). And yes, leave a faucet open, I use the shower (less splash) and I start with the cold. And don't forget the toilet. One more thing, I leave the on-board tank about 1/3 full in case we need the toilet while traveling. Enjoy.
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Old 05-01-2015, 12:55 PM   #4
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DO NOT open a hot water tap to purge the air from hw tank this could be detrimental advice.
You should always purge it from the pressure relief valve.

Leave taps closed, open pressure relief valve and turn on water pump or city water and fill tank till air has escaped from hw tank, only after un bypassing wh.

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Old 05-01-2015, 03:13 PM   #5
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one more thing, when I am hooked to shore water and have not filled the fresh water tank, does the fresh tank just stay empty?

My manual mentions nothing of a HW bypass valve.

Water is working, but I am not sure about the heater yet. I do not see anyplace 'convenient' to just get to the to hot water tank and look. Presuming it is behind a panel somewhere but surely one wouldn't have to take a panel off to look each time out. Am I missing something, or just go ahead and turn the heater on?
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Old 05-01-2015, 03:15 PM   #6
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Yes fw tank remains dry when on city water.
And yes you may have to remove a panel or two!
Eee gads!

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Old 05-01-2015, 03:27 PM   #7
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Turbs can you explain the not opening the hot water tap? My manual says there should be an air pocket in the tank to allow for expansion, I believe if you use the pressure relief valve you will not have this pocket and you can get leakage from the pressure relief valve when the water heats up.
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Old 05-01-2015, 03:33 PM   #8
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Quote:
Originally Posted by Happy Vibe View Post
Turbs can you explain the not opening the hot water tap? My manual says there should be an air pocket in the tank to allow for expansion, I believe if you use the pressure relief valve you will not have this pocket and you can get leakage from the pressure relief valve when the water heats up.
You won't get all the air out with the expansion valve as well.
Now here's why you shouldn't use a hot water tap to check or get air out of hw tank.
1) it's possible you forgot to un by pass hw heater and you'll "still" get water from your hot water tap.

2) you turn your bypass valves to summer position but the internals did not. "it's happened here on frf"

All this leads to not having water in your wh tank and we'll a burnt element.

Your pressure relief valve is a few inches below the top so you'll still have an air pocket .



Make sense?

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Old 05-01-2015, 03:34 PM   #9
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Quote:
Originally Posted by Happy Vibe View Post
Turbs can you explain the not opening the hot water tap? My manual says there should be an air pocket in the tank to allow for expansion, I believe if you use the pressure relief valve you will not have this pocket and you can get leakage from the pressure relief valve when the water heats up.
The water heater doesn't need a big pocket of air and the pressure relief is not actually in the very top of the tank. Opening a faucet can result in a pretty forceful blast of air and with the cheap plastic faucets, you could actually do damage to them. IF you insist, I would open them very slowly, but I always flip the pressure relief on the water heater first.
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Old 05-01-2015, 03:38 PM   #10
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I open my faucet and then turn on the water at a slow rate so I don't get the blast of air. I leave my cover off the WH so I can hear the water going into the tank.
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