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How do I drain the hot water tank before leaving for an extended vacation (4 months)?

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  • Water Master
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You Taking about a freestanding hwt ??

Posted on Dec 29, 2016

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Hot Water Overflow

Do you have an expansion tank tank  in the line leading into water heater? If not what is happening is that the water is no longer allowed to go back into the city supply.  You said that you had turned it off while you left so the water heats up and has no place to go so the preasure/ temperature P/T valve  opens and lets out the excess water from the expanded supply (heater water) that has no where else to go. It used to be that the extra expanded water just backed up into the supply pipe and back into the main. That is no longer possible in most places by the  National Plumbing code.    The answer may be to install the expansion tank into the incoming line. You can see then now at  all hardware stores where water heaters are sold.

Posted on Jan 04, 2009

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I'm going on 2 month vacation during ny upstate winter. I'm shutting off all water at the main house inlet. Rather than emptying my gas water heater, I'd like to keep in in "vacation"mode. Will that work?


Since it will not be boiling it will not lose any water, however I would be concerned about the low temperatures allowing mold or Legionnaires in rare cases to grow, I would call a local plumber for their opinion as to drain or not for your area.
I would drain it and leave it open at the drain and the T and P valve if possible.

Jan 10, 2015 | Water Water Heaters

1 Answer

Rheem electric water heater model 71 305


its for drainage to extend the life of the tank you should drain 2-3 gallons of water every 6 months ... this helps to remove residue from the bottom of the tank

Aug 06, 2014 | Rheem Water Heaters

1 Answer

I have a GE Profile Water Heater Model #SE40M12AA01.


I recommend safety changes to prevent ruptured water heater and assorted leaks.
135 degree hot water.
Maybe replace TP valve if it is dripping.
Drip pan under water heater with 3/4" drain line to outside.
Expansion tank on incoming cold water line to absorb pressure build-up, and prolong life of tank and plumbing.

Here's why:

1) Yes you can have scalding hot water.

2) I recommend 135 degrees since that will burn the evil right out of ya. And generally kill clothes washing bacteria.
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html

3) 150 is dangerous and can seriously burn skin in 1.5 seconds. Not safe around children and elderly.

4) Temperature settings on electric water heater are approximate, since thermostats are calibrated approximately, and read temperature through tank wall.

5) Also if you want to increase amount of hot water for high-consumption household, then setting tank temperature upward is one solution since more cold water is mixed with hot, so amount of hot inside tank goes further.

6) High temperature can cause TP valve to release water.
TP valve is pressure-temperature safety valve. Do NOT cap off.
Rating should be 125 psi and 180 degrees ... but all things water heater are approximate, and TP valves need replacement now and then.
It is not recommended by water heater manufactures to use 150 psi TP valve when water heater came with 125 psi. Rating shows in small print on end of TP. New TP valves sold at local hardware. Let tank cool before installing new one.

7) Higher temperature and high pressure can rupture tank.
Pressure over 80 psi shortens life of water heaters and plumbing fixtures. Put BTG100 pressure gauge on water heater drain valve to check pressure.

8) You need a drip pan with 3/4" drain line to outdoors, or to drain vent line, to prevent flood caused by ruptured water heater.
Turn water heater off when going on vacation.
Inspect water heater each 6 months.
Drip pan available at local home center or hardware:
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#drip

9) Heated water expands and puts pressure on tank and pipes.
Water does not compress... so when water gets hotter it expands against tank wall and against pipes.
Especially in closed system (check valve present) when system is without expansion tank.
Expansion tank is installed on incoming cold water line.
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#expansion

Oct 31, 2012 | Water Heaters

3 Answers

How to replace water heater element will water cme out when you remove element does tank have to be drained


Safest method:
Shut off electricity to heater.
Shut the water valve.
Drain heater to below the level of the element, open hot water valve in house to vent heater to speed draining.
If the element is on top, you don't have to empty the heater.
Remove old element, install new element.
Leave hot water valve open somewhere in the house.
Turn water on.
Once air is removed at hot water valve, turn electric on.
Shut water valve.

Gary

Aug 13, 2011 | Reliance /State Ind. 9002450 Element For...

1 Answer

No problems at this time. This 100 gal water heater get used maybe 5 or 6 times year when we use the auto dishwasher. My question is should we leave it on or turn it to pilot postion when not is use. This...


You should be fine turning to pilot position for extended periods of time. However if it was me I would make a habit out of firing it at least once a month and letting it run fof 20-30 mins. While heater is firing I would open hot water outlet somewhere to circulate some wate to help keep mineral build up cleaned out. You can run water out of drain valve if need be. Thank you

Nov 23, 2010 | Rheem Tank Water Heater G100-200, 100...

2 Answers

Water leaking from the base of the tank


If you'r really lucky you may find a leaking fitting on top of the water heater thats draining down inside the shell and out the bottom, otherwise its time to replace a rusted out water heater.
Sorry

Nov 08, 2010 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

Energy smart hot water heater not giving ample amount of hot water both elements ohm at 12.5


element-connection-450.jpg
For images and product information
For manual


You checked ohms, did you check for 240V across lower element when lower element is turned on?

Energy smart electric water heater
has a control box on top of unit. Water heater does not have typical thermostats that can be tested and replaced. Temperature sensors located above each element send information to control box through small black and red wires. Temperature sensor sells for about $40, but there is no test listed that shows how to determine when sensors fail.

Potential problems:
-Temperature sensor is not reading correct temp
-Control box not processing correct temperature information
-Selector on control box set to 2, 3 or 4
-Thermostat temp on control box set lower than 120 degrees F
-Sediment build-up starting to surround lower element so water doesn't circulate (see if drain valve runs full-open

Oct 08, 2010 | Water Heaters

1 Answer

Cold water ok, no water flow from hot water lines.


Bypass valve incorrectly set
obstruction or dirty tank
plugged line - lime or other! does cold flow into tank ok?
Tank is split water going somewhere you can't see - this should be obvious.

There is not really anything to obstruct the flow normally so there
would have to be an obstruction somewhere. Lime, junk, garbage etc build up .
On my coach I have lots of pressure on the cold side so hot would have to have the same unless there is an obstruction into or out of the tank. If in the bypass position you have sufficient flow than the lines are ok and the problem or obstruction is in the tank itself. Drain the tank, leave the bottom plug out, open up the pressure relief valve. Turn on the water and see if you get a lot of water draining from the drain hole on the tank. There should be a lot of water coming out of the drain hole. If so that tells you that your getting sufficient flow into the hot water tank. If so your problem is the water getting out of the tank. Like a clogged return line or an obstruction from the water tank to the faucet. A dirty scale lined tank can do a number on tank water flow. Also check to see if the water is going somewhere else, your tank could be split and you just can't see where the water is going!

Dec 17, 2009 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

Power vent 50 gal tank flashing code 2-3


1. Turn off power vent blower and set water heater temp to vacation (lowest temp)
2. Turn on power vent blower
3. Turn the water heater temp from vacation (lowest temp) to hot (highest temp) four times.
4. Set the water heater temp to normal

Aug 21, 2009 | Rheem Water Heaters

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