Question about Rheem 40 Gallon FVR NATGAS Low WATER HEATER 6YR 22V40SF

Open Question

How to change heating elements

Heating elements top and bottom seem to be burnt. Do I need particular type of element and can they be changed without emptying the whole tank?

Posted by Anonymous on

Ad

5 Related Answers

HANK MCNEIL

  • 252 Answers

SOURCE: heating elements do not operate together

That's how they work. First you need to know that cold water goes into the tank near the bottom (because of the "dip tube" inside the tank) and hot water is taken out at the top. Also hot water naturally rises.
so... when the tank is full of cold water the top element will come on and heat up the top 1/3 of the water then the bottom element will come on and finish heating the rest of the tank

Posted on Mar 28, 2009

Ad

SOURCE: I can't get 240v across the bottom element. Where

If that is indeed so you have a "Short" between Phase and Earth. .. YES one should have the mains Voltage across the Load, But NEVER anything between Phase & Earth. Look think of it all like this. The Phase comes in, to a, say, a switch, from switch, to thermostat, from thermostat, to One Side of the "Load" Element. The "Other side of that "Load" Element then goes to Neutral. Circuit Complete. Two elements, wired in series would indeed split the Voltage, if wired that way. If done like this, but if wired in parallel, then, again Both would have One End, connected to Phase, & the "Other" side(s) would go to Neutral. Thus the circuit is complete. Some setups are more complex, and use two elements. but essentially all the same. The elements could be wired in series or parallel, depending on current draw/resistance. The Phase is the wire always "Broken" and the Neutral is always "Common".
BE CAREFUL.

Posted on Feb 10, 2010

Ad

thuemen

  • 8 Answers

SOURCE: Top heating element was broke. Replaced got hot

look for a badly connected power line ont he bottom element, or any connection upstream of the power terminals. voltage readings usually drop to that range when you only have one side of the 220v circuit connected.

Posted on Jun 22, 2010

Anonymous

SOURCE: What is the energy factor for the mod.82V80-2? I

http://www.rheem.com/product.aspx?id=09DF2BDD-5E11-4D32-B574-84ACFB8A4619
http://globalimageserver.com/fetchDocument.aspx?id=052c9e32-ce37-48d7-8990-9e430f23fef3

82V80-2 Energy factor is .86 according to water heater industry self-regulated standards.

Rheem pdf says these water heaters are wired for non-simultaneous operation.
Except special order water heaters.
Non-simultaneous operation uses single 240V circuit as described below.
If your water heater is wired for simultaneous operation, and each element is on a separate circuit, that makes your water heater special order. I would guess the reason is for higher first-hour delivery, which implies rapid heating and would likely affect energy factor.
You might want to get serial number off model and call Rheem for specs on that special order.

Your water heater energy factor may be the same because 'energy efficiency is based on the amount of hot water produced per unit of fuel consumed over a typical day.' This means an aircraft carrier can be considered highly efficient despite overall cost. And naturally the guys making the aircraft carrier are also doing the rating.
http://www.energysavers.gov/your_home/water_heating/index.cfm/mytopic=13000

Non simultaneous operation means the upper thermostat controls heating functions.
240V goes to upper thermostat first.
When water inside tank is cold, thermostat reads temperature through tank wall.
Upper thermostat turns on upper element until top 2/3 of tank reaches thermostat set point.
Once set point is reached, upper thermostat turns off upper element and sends power to lower thermostat and lower element.
Lower thermostat reads temperature through tank wall, and turns on lower element until bottom 1/3 of tank reaches thermostat set point.
As water cools inside tank, lower thermostat is first to respond since hot water rises.
Lower thermostat turns on lower element until tank again reaches set point.
When hot water faucet is turned on, hot water exits top of tank.
At same time, cold water enters bottom of tank through the dip tube.
The heating cycle repeats.
At all times, the electricity flows through upper thermostat. And upper thermostat is powered by one 240V circuit.

With simultaneous operation, the upper and lower thermostats work in same manner.
Except thermostats are wired separately.
Lower thermostat does not wait for upper part of tank to be heated first.
Lower thermostat turns on whenever lower part of tank cools.
The advantage is more hot water available rapidly when demand is high. This is called first hour recovery.

One method for reducing electric consumption is to set lower thermostat so it only turns on during certain times of day. For example Whirlpool Energy Smart operates in this manner and shaves a few bucks off the bill each month. This says that simultaneous operation is not an energy saver, unless that circuit controlling lower thermostat is set on a timer.

Posted on Dec 07, 2010

Anonymous

SOURCE: No hot water from my Rheem 72-40-1, I replaced the

Open following link to look at thermostat wiring
http://waterheatertimer.org/How-to-wire-water-heater-thermostats.html

If you have dual element electric water heater, then that is a 240Volt water heater.
http://waterheatertimer.org/240-v-water-heater-circuit.html

If you are replacing lower element several times, are you also cleaning out the tank?
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html

Are you installing same wattage element shown on label on side of tank: Should be 4500Watts.
http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html

If upper element burns out, then tank will have no hot water:
http://waterheatertimer.org/How-it-works.html
http://waterheatertimer.org/How-to-test-water-heater-element.html

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

Posted on Mar 06, 2011

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Burnt out element


Are you sure its burnt out? Most of the time its the thermostat. If its burnt out then just change the element. To do that all ya do is shut off the power to the heater drain the tank unhook the two wires on the element and unscrew the element and replace it with a new one. You can get new ones at lowes or home depot. Its usually the bottom that goes out first.

Jan 11, 2013 | Bradford White MS80R6SS 80 Gallon - Solar...

1 Answer

My electric boiler (80litres) is only giving out about half the capacity of hot water, then goes cold. On the temp; gauge on top the needle only reads half of what it used to.


Hi,
The unit probably has two heating elements and the bottom one is burnt out, therefore only the top portion of the tank is heating...

check and change the bottom heating element.

heatman101

Apr 23, 2011 | Water Heaters

1 Answer

No hot water from my Rheem 72-40-1, I replaced the bottom element a couple of times now in the last 4 months. I replaced the bottom element last night and for the first time opened the top cover to see...


Open following link to look at thermostat wiring
http://waterheatertimer.org/How-to-wire-water-heater-thermostats.html

If you have dual element electric water heater, then that is a 240Volt water heater.
http://waterheatertimer.org/240-v-water-heater-circuit.html

If you are replacing lower element several times, are you also cleaning out the tank?
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html

Are you installing same wattage element shown on label on side of tank: Should be 4500Watts.
http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html

If upper element burns out, then tank will have no hot water:
http://waterheatertimer.org/How-it-works.html
http://waterheatertimer.org/How-to-test-water-heater-element.html

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

Mar 05, 2011 | Rheem Water Heaters

2 Answers

I TURNED ON POWER TO MY NEW ELECTRIC WATER 40gal MODEL # GEM402 AFTER FILLING WITH WATER. WATER WOULD NOT HEAT UP. CHECKED THREMOSTATS BOTH WERE PRSET AT 120 CHECKED POWER,BOTH HOT WIRES HAVE 124 VOLTS TO...


The controls of electric water heaters are designed so that at no time are both the top and bottom heating elements energized. Nearly all electric water heaters of this capacity in the US & Canada (other places, too) operate on 240 Volts.

When the water in the tank is below the set point of the thermostat (in your case - 120 degrees), the top heating element is expected to be on - (unless there is an issue with the top thermostat or limit switch). The top most control is the "high temperature limit". It is identified by the reset button on it. Make sure this isn't tripped by depressing the button. If it clicks - it was tripped and should start to make hot water at this point. If not tripped, you should check for the presence of 240 Volts between the heating element terminal screws. Do not measure from ground to a terminal screw and believe 120 Volts is "good". To make heat, you need 240 Volts - not 120 Volts measured across the terminals - not to ground. The amount of heat created running at 120 Volts is only 1/4 of what it will do at the correct voltage.

If you don't measure 240 Volts on the top element, check the bottom element in the same manner described for the top element.

If unable to measure 240 volts on any element, either there is a problem with the power source (blown fuse or circuit breaker), high temp limit switch, or thermostat(s).

If 240 Volts is present on either heating element, and water is not warm / hot in 30 minutes or so, a defective heating element is suspect. You can change controls without draining a tank, but replacing elements will require draining the tank first. Do not power the water heater without first filling it.

You can read a very detailed "how to" article about checking water heaters here.

I hope this helps - and good luck!

Nov 04, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

The water heater seems to not be heating. The bottom part of the tank is cold and the top is warm. I did reset the breaker this morning. Do I replace the bottom element?


Hi,
Yes that may be the problem. To know for sure you need an electrical test meter to see if the top thermostat is sending the power down to the bottom element after the top one is satisfied.
If you have power at the bottom element and there is no power draw then you have a bad element. Drain the tank and replace it. Make sure to completely purge the air from the tank before turning thepower back on.

Heatman101

Dec 30, 2009 | General Electric GE SmartWater Household...

1 Answer

I have change the bottom heatern and the bottom thermostat but the bottom heate do not have current even if the top heater and thermostat have current.


There will be no current to bottom element until top element shuts off. then top thermostat will send current to bottom element only after the top half of the water heater has heated up and shuts off current to top element. Only one element at a time can be on. If current still does not go to bottom AFTER top element shuts off, the top stat could be bad.

Dec 28, 2009 | Water Heaters

2 Answers

Wiring for dual 30 gal heat element. changed both elements. need to put wiring back


Hi,
Go to this link and page down, it gives you the wiring diagram for a dual element hot water heater.

http://www.plumbingsupply.com/element-installation-instructions.html

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

Dec 09, 2009 | Element Water Heaters

1 Answer

Heating elements do not operate together


That's how they work. First you need to know that cold water goes into the tank near the bottom (because of the "dip tube" inside the tank) and hot water is taken out at the top. Also hot water naturally rises.
so... when the tank is full of cold water the top element will come on and heat up the top 1/3 of the water then the bottom element will come on and finish heating the rest of the tank

Mar 28, 2009 | Rheem 80 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Burnt element on water heater


It would be a good idea.If you don't you have water all over you and the heater.Turn water off and open the drain valve at bottom of heater.I would hook a water hose and run outside.when the water start running open the pop off valve ,it will run faster.

Mar 23, 2009 | General Electric GE SmartWater Household...

Not finding what you are looking for?
Rheem 40 Gallon FVR NATGAS Low WATER HEATER 6YR 22V40SF Logo

Related Topics:

60 people viewed this question

Ask a Question

Usually answered in minutes!

Top Rheem Water Heaters Experts

Brad Brown

Level 3 Expert

18562 Answers

Bill Johnson

Level 2 Expert

306 Answers

jdthefixer

Level 3 Expert

747 Answers

Are you a Rheem Water Heater Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...