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Open Roads Forum  >  Class B - Camping Van Conversions

 > Filling a Water heater tank

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Sweetroadtrekker

Ontario

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Posted: 06/14/12 04:37pm Link  |  Print  |  Notify Moderator

Just bought a 2002 Roadtrek 190 Popular - our first RV. How do I fill the water heater? Does it fill automatically when I fill the fresh water tank? Thanks for any advice with the water heating system.

pulsar

Lewisville, NC

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Posted: 06/14/12 05:05pm Link  |  Print  |  Notify Moderator

The water heater tank is filled by turning on the water pump and opening a hot water faucet. You will get air and sputtering until the tank is full.

If you system has a winterizing by-pass valve, make sure it is in the normal position.

Tom

pulsar

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Posted: 06/14/12 05:06pm Link  |  Print  |  Notify Moderator

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garym114

Bluff Dale, Texas

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Posted: 06/14/12 06:24pm Link  |  Print  |  Notify Moderator

They should both be open, the handle lined up with the pipe/hose.


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MAU MAU

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Posted: 06/17/12 08:32am Link  |  Print  |  Notify Moderator

After the hot water is flowing freely at the faucet, you may want to top off your freshwater tank again as the hot water heater is now holding about six gallons.


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Sweetroadtrekker

Ontario

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Posted: 06/14/12 06:09pm Link  |  Print  |  Notify Moderator

On the hot water tank, there is a hot water valve at the top and a cold at the bottom. What position should these be in to fill the tank and then eventually when I want to use it? They are currently parallel to
the hoses they are on.

retraite

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Posted: 06/17/12 09:43am Link  |  Print  |  Notify Moderator

MAU MAU wrote:

After the hot water is flowing freely at the faucet, you may want to top off your freshwater tank again as the hot water heater is now holding about six gallons.

MAU MAU is quite right, assuming you "filled" using the pump and not the city water connection.

Additionally, some folks recommend that, when you've filled the hot water tank, and before you make hot water, go outside and open the pop-off valve for a few seconds - it's the brass valve at the top of the tank visible from the outside when you remove the HW heater "cover" - so that there is just a wee bit of air space at the top of the HW heater tank to allow for the slight expansion when you heat water.

Now I suspect that few folks take that extra step, but, it sure makes sense to me. And, it only takes a moment to do it.

If you want to see what a pop-off valve looks like, go look near the top but on the side of your home hot water heater. It's exactly the same device, just without a pipe running from it to a drain.

Cheers.

1775

NY

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Posted: 06/17/12 09:45pm Link  |  Print  |  Notify Moderator

Sweetroadtreker -

There are three valves on the pipes in front of your hot water tank when you look at it on the inside of your Roadtrek - there is one on the top pipe, one on the bottom pipe and one on the pipe that connects the two up and down. Those valves must all be pointing to the aisle. All three need to be pointing toward the aisle - this means that the one on the top and the one on the bottom line up with the pipe but the one on the up and down pipe will now cross the pipe. With the valves in this position your hot water heater is in the system and in the active water line. With the valves in the opposite positions the hot water tank is in BYPASS mode which means no water will enter your hot water tank. First make sure those valves are correct. It does not matter if you are using your fresh water tanks or connected to city water. Turn on your water pump if you are using your tanks (leave it off if you are using city water connected to a hose to a faucet) and turn on the hot water on your sink faucet. Give it a little while and you will get water coming out. The water will be cold. You will also hear your water pump come on if you are using your tanks. Your water pump will stay on after you turn off the hot water on the sink. Your hot water tank is filling and this will take a bit of time as it is filling up 6 gallons. When you hear the pump shut off turn on the hot water heater switch on the wall over your side door. A red light will come on that says reset underneath and eventually will go out. Now you have to wait for the water to get hot. It takes maybe twenty minutes if you filled this with cold water. Run the sink after ten minutes and you should feel a difference from your hot water to your cold water. It really does take awhile to get it really hot but it will get there and stay hot as long as your water heater switch stays on.

The water refills automatically - what is happening is that the fresh water tank is feeding water to the cold water pipe and also to the pipe going into the hot water tank. When there is room in the tank, it puts more in. It is all very simple and you don't have to open the outside to check on anything at this point.

If you are on city water and your hot water tank valves are in the correct positions it will fill very quickly - six gallons from a hose is a lot faster than six gallons through the pump. But it is really best for the first times to let this fill from the fresh water tank so that you can hear the pump running while it moves water into the tank. The pump only runs when there is a demand for water someplace.

And make sure your propane tank valve is turned on before starting any of this.


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georgelesley

Minnesota

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Posted: 06/17/12 10:49am Link  |  Print  |  Notify Moderator

Ritraite is right. Open the pop off valve that way you can be sure the tank is full of.water.


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