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Why is the cold water inlet on my mobile home water heater on the bottom?

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Having the dip tube routed to the bottom will keep the water circulating in the tank.

Posted on May 04, 2015

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Need to know if my Rheem 21V30-6N water heater is approved for use in mobile home


ONLY if the air intake is located on bottom so air can be drawn from under the mobile home
http://waterheatertimer.org/How-to-install-gas-water-heater.html#manufactured

-Or- if your water heater has power vent that draws air from outside, usually through side wall.

-Or- if your water heater is installed outside.... good for warm climates only

Otherwise ordinary store-bought water gas heater draws too much air from the space, and cannot work properly in a mobile home.

Gene

Sep 30, 2014 | Water Heaters

1 Answer

Were is cold water inlet and hot water outel on model 71-40d b


Cold inlet and hot outlet are marked on top of water heater.
Usually there is a letter or word embossed into the metal top.

If tank is connected, then turn on hot water tap for a few moment and feel which pipe is hot.

Cold water enters bottom of tank through dip tube located on cold side. If hot and cold are reversed, the water heater will not perform as expected.
http://waterheatertimer.org/Water-heater-dip-tube.html

Aug 05, 2012 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

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Running out of hot water after 10-15 minutes. already changed the bottom element and theromstat and still missing hot hot??


Is the upper element working?
The cold water comes in at the top inlet and there is a tube inside the water heater which takes the water to the bottom. If this tube breaks off the cold water will mix with the hot water on the top and you'll have less hot water. You can take it out and inspect or replace it.

Mar 05, 2011 | Rheem Water Heaters

1 Answer

My reliance natural gas water heater overheats causing scalding water to come out of my faucets. I have had authorized service companies come out three times to replace and retrofit different controls and...


Information below is for tank-type electric or gas heater only.

There is a condition called stacking.
This might apply to your water heater or not.
Having authorized service people to your house 3 times suggests more complicated mix of problems.

Stacking is caused when there are repeated short draws of hot water.
As you know, each time any hot water is drawn out of faucet, cold water immediately enters bottom of tank through the dip tube. The dip tube is connected to cold water inlet and runs to bottom of tank.
So all cold water enters bottom of tank close to the gas water heater thermostat.
See illustration of dip tube, that also shows copper thermostat sticking into tank that is connected to gas valve.
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html#flushelectric

Let's say your water heater if fully heated and burner is off.
A short draw of hot water causes cold water to enter tank.
Another short draw. And then another short draw, each draw happens close to same time as other draws.
Water at top of tank is plenty hot, but bursts of cold water get near thermostat and cause thermostat to turn on burner.
Burner heats water and more hot water rises to top of tank. Water at top of tank becomes overheated each time stacking occurs.

Again, a stacking situation may not be the cause of your problem.
However, remember if single-handled faucet is opened straight upward, then that draws both hot and cold water. And cold water immediately enters tank.
Only when the single-handled faucet is lifted with the handle all the way to the right, does it draw only cold water. Even so, some single-handled faucets have bleed-over between hot and cold sides, so hot water is drawn anyway.

Another possibility is that the dip tube ends at or near thermostat, instead of going all the way to bottom of tank. The dip tube should go straight down from cold water inlet, but dip tubes are made of plastic, and some self-cleaning tanks have a curved dip tube or dip tube with perforations that create currents designed to stir sediments off bottom of tank (although this is not proven to be effective deterrent to sediment formation).

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 10, 2011 | RELIANCE ELECTRIC WATER HEATER

1 Answer

I have a forty gallon electic rheem water heater with a pipe going in the bottom and one in the top which wone is the cold water inlet the bottom????


Hi,
The one with the pipe going to the bottom is the cold...cold water goes in on the bottom and the hot comes off of the top...hot water is lighter then cold water and rises to the top...

heatman101

Oct 11, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Water is warm


Warm water is a result of and element gone out and more than likely top element is gone out. Best thing is to replace both element's because they are not exspensive and if you replace just one it will work the other one harder and eventually go out.

Just a little information if the bottom element goes out it will give you a burst of real hot water then get cold. If top element goes out it will give you warm water then get cold.

Sep 25, 2010 | Reliance & 40 Gal Mobile Home Water Heater...

2 Answers

Our water keeps fluctuating between hot and cold. The hot water will not stay on. It lasts about 1 minute and then turns to cold. After about 2-3 minutes it will get hot again?


The inlet line to the water heater goes to the bottom of the water heater to prevent the cold incoming water from mixing with the heated water at the top. The tube going to the bottom can come loose.

Turn the water off and relieve the pressure by opening a faucet and remove the fitting where the water enters the heater. You can see if the pipe is still connected.

Jun 15, 2010 | Water Heaters

1 Answer

I have a 40 gal Whirlpool single element 3500 mobile home hot water heater. I have replaced the element, thermostat, high pressure valve (because it was leaking) & flushed for sediment. In morning I...


One thing you will want to check is see if the cold water pipe on this heater is installed on the side or the top of the water heater. A Whirlpool Mobile Home Electric water heater should have the cold water pipe on the side near the bottom of the heater.
If it is not installed on the side of the water heater this can cause you to run out fast.
If the water pipes are installed correctly try contacting the manufacturer at 1-877-817-6750 and they can advise you.

Mar 17, 2010 | Water Heaters

1 Answer

I have hot water for a minute then it goes to warm. I took off the 2 wires on each element and I have 15 ohms on the top and 5.5 on the bottom. Is my bottom element bad?


Sounds like bottom element may be bad but usually reads open circuit if bad. Also tan k would run about 8 gallons hot water then go cold. lots of warm water usually means bad dip tube.
Check if tank is hot at bottom element when not used for a while. If bottom element is still cold then bad element.
If bottom element is hot - (all water in tank is hot then you have a bad "dip tube" This is allowing incoming cold water to mix with outgoing hot water. The dip tube is usually A part of the cold water nipple or B located under the cold water inlet nipple.

Jan 18, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

No water coming out of carver cascade water heater


is the cold side hooked to the cold side if not you will be feeding the unit backwars making it to where the cold is just comming across the top of the tank, check the dip tube also, this makes the cold water go to the bottom and push the hot out of its outlet,, how many faucets are involved, if just one might want to check the cartridge to make sure it is working properly

Jun 16, 2009 | Reliance & 40 Gal Mobile Home Water Heater...

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