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Emmersion tank wireing

My tank stat blew last week I have a replacement but I cannot remember the wiring set up, please help.
Thanks John

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If it's 110 the black is the postive voltage, the white is either the negative of the voltage or hot for 220 and the green is the ground.

Posted on Sep 03, 2008

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Replaced both elements and tstats now there is 240 at both elements at once and only the top one is heating the bottom is coldreplaced bottom sgain thinking maybe bad from factory but still cold will i...


Electric water heaters never power BOTH the upper and lower elements at the same time.

If the water in the tank is cold, either the top OR bottom element will be powered through the upper thermostat (t-stat), never both at the same time. The upper t-stat will send power to the upper element until the temperature of the water in the top of the tank reaches the set point of the t-stat say 140 degrees. When the water temperature in the top of the tank reaches 140 degrees, the t-stat is "satisfied" and disconnects the power from the top element and sends it to the lower t-stat.

IF the temperature of the water in the lower half of the tank is lower than the set point of the lower t-stat, the t-stat closes to send power to the lower element. The lower element REMAINS powered by the t-stat until EITHER the water in the lower part of the tank reaches the set point temperature of the lower t-stat again, say 140 degrees; OR the temperature of the water in the upper part of the tank drops, at which point the upper t-stat "calls" and switches the power away from the lower t-stat and sends it to the upper heating element instead. When the top t-stat is satisfied, it switches power back to the lower t-stat. The process will continue back and forth for as long as needed to bring the temperature of the water in both halves of the tank to 140 degrees.

You must wait until the top of the tank is heated - before the lower element will be powered to heat the water.

I hope this helps you understand how the switching happens in these water heaters. Good luck! Please rate my reply. Thank you.

Mar 24, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Installed the timer last week, we have it to cut on at 4pm and shut off at 10pm, it will come on at the right time, and even shut off at the right time, but for the first time only, once it hits the 10pm...


Your clock motor is not correctly wired to the terminal block. Carefully review the connection diagram for the line and load leads and the timer clock leads. Somewhere in there you made a mistake when connecting the wires. If not there is a defect in the clock mechanism and you should replace it. For warranty information please refer to the instructions or the place you purchased it from for assistance.

John

Dec 14, 2010 | Intermatic WH40 - Water Heater Time Switch...

2 Answers

Hot water runs out in 5 minutes it use to last 20minutes


Electric water heater can be repaired by homeowner.

Water heater has some hot water.
We know 3 things for sure:
- electricity is ok
- upper element is ok
- tank does not have overheating problem

Here are the suspects:
- Burned or loose wire
- Upper thermostat not working
- Lower thermostat not working
- Lower element not working

What to do:
1) Turn off power, open water heater covers and look for signs of burned or loose wire, especially on lower element. Burned wire on lower element says lower element is burned out.

2) Test lower element.
Lower elements burn out when sediment builds up inside tank.
http://waterheatertimer.org/How-to-test-water-heater-element.html
http://waterheatertimer.org/How-to-replace-water-heater-element.html

3) If wires are ok. And you do not want to test parts, then replace upper and lower thermostat for 25$. If problem persists, replace lower element.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

4) If you want to test thermostats and elements before replacing anything:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

5) When finished, be sure to put insulation and covers back on tank so thermostats don't receive cool air and misread tank temperature. This will prevent overheating of tank that causes red reset button to trip.

geno_3245_101.jpg

Nov 23, 2010 | RELIANCE ELECTRIC WATER HEATER

1 Answer

High Temperature shut off keeps killing the power


When your water is getting heated too much , there awre a couple things that may be happening. The thermostats need to be in full contact with the metal tank surface. If there is space between the back of the t-stat and the tank, then the water will overheat. You may have a bad t-stat. Replacing a t-stat is a relatively easy chore. They can be fiund at most building supply or hardware stores.
Take the old one with you to make sure you get an exact replacement. Make a drawing of the connections , so you can rewire the new t-stat without any problems.

Please Vote !!

May 25, 2010 | Reliance & 50gal Electric Water Heater

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Hot water does not last long. Model 82vh40-2 mnf. 05/2005


If the lower heating element burns out the upper element will heat the top part of the tank then shutoff. homw depot/lowes etc should carry elements. 1 turn off breaker, remove element access cover (the 2 panels on the front of the heater) test for electricity at the reset button ( uppermost device in upper panel) to make sure power is off. 2 turn off water (I usually turn off the cold water main to stop water cross feeding into hot supply line back into heater) 3 disconnect the 2 wires on the lower element, test with continuity tester. shhould be no continuity between terminals and tank, but around 10 ohms between the 2 terminals. Check the thermostat for continuity if tank is cold thermostat should be closed ie zero ohms across the 2 terminals.
If stat is bad replace stat; disconnect wires push it up out of the spring clip insert new stat reconnect. If element is bad: drain tank. connect garden hose to tank drain valve, open tank drain valve turn water main on to clear rust sediment and get water flowing. Next remove filter screen from a hot water faucet then turn on ( a hot faucet upstairs or higher than tank drain). Now turn water main off, air will now go in through hot faucet and tank will drain, takes about an hour. Use a water heater element wrench about$10 to remove element(s) make sure no bits of rubber gasket are left in element opening- dig em out with a screwdriver if needed. Insert new element with its gasket and tighten. reconnect wires DO NOT TURN ON ELECTRICITY! BE SURE TO FILL WATER HEATER WITH WATER ! Turn water main back on -air will come out of the hot faucet for several minutes. When water runs without any air sputtering, turn off faucet and replace the faucet filter screen. check element(s) for leaks. turn breaker back on.

Feb 17, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

The heating elements and both thermostats have been replaced, they are getting juice but the water is still cold.


when you replaced them did you bleed all of air off tank before restoring power to w/h if not you could have burnt the new ones , are you getting 220 volts at top of w/h and ck wiring again to be sure properly wired top comes first and when has reached set point of top t-stat it transfers power to bottom just like a 3-way light switch operates 120 volts always on bottom waiting on the other side of the line to heat the element on 220

Jan 06, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Remote Control turns off by itself.


the overheat stat needs replacing easy job

Oct 11, 2009 | Water Heaters

1 Answer

Elec. hot water heater


thanks for your question, sounds to me like you have a burned out bottom element in the tank, depending on how old the tank is, the amount of calcium in the tank, will determine if you should repair or replace, if your tank is fairly new, then you will first have to shut the power off to the tank, turn the water off at the shut off, drain the tank, write down the model #, the serial #, what brand, and the ratings on the lower element too, go to the hardware store, buy a new element and element wrench, return home, write down which wire goes where on the element, very important ! remove wiring, remove element, that's the hard part most of the time, install the new element, rewire, close all panels, refill tank, do not turn the tank on before filling !! then after tank is full, turn power back on, you will have to wait about an hour for hot water, if the unit looks to old, then replace it. I would say anything over ten years is worth replacing, hope that helped ya, thanks again for your question, let us know what happens, mr.grzz

Jan 12, 2009 | Water Heaters

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