Question about Noritz Water Heaters

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Leaking from inside box for few days , plumber said condensation built up to use fan to dry out.

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If the water is coming down over the fan motor, you probably have a heat exchanger leak. If the heat exchanger is leaking, it needs to be replaced. The heat exchanger is the large copper box on top of the heater.

Posted on Oct 16, 2010

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Condesating from extremely cold water,which is in city mains this time of year.I've had to install tempering tanks,and in one case a small wtr heater to temper water before hitting that massive flame,it will save the life of the combustion chamber too,even being stainless.One job was well water 56deg.all yr.Tempered water will allow temp rise to happen easier giving more flow and more hot water.Galv.temp tanks are an easy way to get water to room temp.

Posted on Jan 27, 2011

  • Rich Carothers Jan 27, 2011

    ps most heaters are a 45 deg. rise

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I have a problem with a Rheem Power Vent Water Heater shutting down due to condensation build up.


if it,s condensation....let it sit out side in sun to dry out well then bring it in start it and with a flash light look for leaks

Aug 13, 2016 | Rheem Water Heaters

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How do you fix rinnai tankless water heater code 79


Do not spend 500 on plumber to determine that condensate drain was not installed properly on vent line, and that acidic water from combustion by-product has been dripping down into tankless and burning hole through the special-alloy heat exchanger instead of going down into floor drain and corroding your plumbing pipes.
Do not spend hours fulfilling the required monthly and yearly maintenance, or spend money on service call each year to get the burner cleaned and gas pressure checked on your tankless computer that heats water...
Instead, fix any tankless problem, any brand tankless, same day do-it-yourself for $385, by replacing 1 part: the whole thing:http://waterheatertimer.org/How-to-install-gas-water-heater.html
Do not install tankless.
Gene

Jul 20, 2013 | Rinnai Water Heaters

1 Answer

Hot water heater sweeting from top


Water on top of gas heater can be caused by poor venting, or inadequate combustion.
Make sure water is not coming up from under tank top, indicating tank leak requiring tank replacement.
Have a plumber look at problem to make sure home is not filling with deadly, odorless CO gas.
Inspect pipes that they are not corroded and covered with condensate.
Check that roof cap is in place.
Let heater fire and burn for a few moments so the fire is going good, and then light match just outside the draft hood on top of heater. Blow out match and see if smoke draws immediately into vent and upward.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html
http://waterheatertimer.org/Leaking-water-heater.html

Aug 31, 2012 | RHEEM 50 Gallon FVR NATGAS Water Heater...

1 Answer

Sweeting from top of heater


Water on top of gas heater can be caused by poor venting, or inadequate combustion.
Make sure water is not coming up from under tank top, indicating tank leak requiring tank replacement.
Have a plumber look at problem to make sure home is not filling with deadly, odorless CO gas.
Inspect pipes that they are not corroded and covered with condensate.
Check that roof cap is in place.
Let heater fire and burn for a few moments so the fire is going good, and then light match just outside the draft hood on top of heater. Blow out match and see if smoke draws immediately into vent and upward.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html
http://waterheatertimer.org/Leaking-water-heater.html

Aug 31, 2012 | RTO RHEEN Water Heater Gas Valve - Natural...

1 Answer

Rhepre 40-4 wtr heater leaking from cold water intake


Firstly, don't confuse condensation on the pipe with a leak. The cold water inside the pipe makes the pipe cold. The warmer air around the pipe causes condensation to appear - much the way a glass of cold water "sweats" on a table in a warm room.

Next, determine exactly where the source of the leak is. If it is at a soldered or threaded junction of pipes or pipe an tank, you should be able to solve it - if you know how to solder.

You'll have to power off the tank at the circuit breaker (or shut off the gas supply if not an electric type) before doing anything else. Next, shut off the cold water supply to the tank. This valve must be on the supply side of the leak. If the leak is ahead of the valve, you might need to shut off the water to the entire building. Then, open the closest hot water faucet. Finally, lower the water level of the tank by draining the tank from the bottom valve (you'll need to connect a garden hose to it and run the end to the outdoors, shower drain, toilet, etc.). Keep in mind - the water will not drain "up hill". That means the end of the hose must be lower than the top of the tank. You do not need to drain the entire contents of the heater unless you need to physically move it (or if it is a natural gas or propane type - as a licensed plumber or pipe fitter will be required to disconnect / reconnect the fuel line). A few gallons of water should be enough to allow working on the pipe without causing spills.

Disconnect the cold water supply pipe from the tank - above the source of the leak. You may have to do this by un-soldering the nearest pipe coupling with a propane or mapp gas torch. Soak a thick cloth in cold water and wrap it around the pipe at the tank's inlet to prevent the heat from the torch from damaging the plastic inlet fitting inside the tank. If the inlet connector is melted or damaged; the entire tank must be replaced. Additionally, you might need to unsolder the hot water piping to get better access to the cold water pipe. Only disconnect as much as needed to do the job.

Once the pipe(s) are disconnected, remove the section of pipe that mates with the leak. You will probably need wrenches to unthread pipe sections or fittings so that you can carefully inspect the male and female threads. Fully remove the pipes & fittings and obtain replacements as needed.

You might want to think about installing unions on the hot and cold water pipes. These will make future removal of the tank very easy with no need for soldering. Doing this will increase the time it takes to do the job this time, but simplifies tank removal in the future. You're already into this job - and its only few more extra steps.

Before reassembly, you should provide several wraps of teflon tape around the threaded portion of all male pipe threads. Telfon tape is highly suggested as it is clean and very easy to work with when compared with pipe dope that is applied with a brush. Carefully thread the pipes into the fitting(s) on the tank hand tight. If you are presented enough pipe or fitting to hold the tank inlet fitting, do so with a wrench. Use a second wrench to fully tighten the pipe into fitting. If there is no way to hold the inlet fitting, use a wrench to tighten the pipe about an additional full turn. Always use two wrenches to tighten pipes into fittings when possible. Make up any other threaded fittings (unions, etc.) and pipes as needed. Dry fit the copper pipes together - cut long pieces and replace short pieces of pipes as needed. Once all the pieces are are the correct length and fit together properly prepare for soldering. Clean the outside ends of all copper pipes and insides of couplings and connectors to be soldered with emery cloth, sand paper, or wire brush tools designed for expressly this purpose etc. until they are fully scuffed up and are bright and shiny. Wipe any dust and debris from the pipe with a clean, dry cloth. Try not to touch the cleaned parts of the pipe with bare hands. Apply a light coating of soldering flux to the cleaned ends and fit the pipes with couplings together again like the dry fitting earlier. Place a wet cloth around the pipes nearest the inlets (as before when removing the pipes) once again.

Heat the couplings and fittings one at a time with just enough heat to cause the solder to be wicked into the fitting. It is important not over heat the fittings or pipes. Be sure to let solder flow all the way around the pipes and into both ends of the coupling to ensure a complete solder seal both in and out of the coupling. Wipe away excess solder with a wet cloth to keep your work good looking. Once one fitting has been completed, go to the next and repeat until all fittings and pipes are soldered and clean. A good soldered joint should have a ring of solder visible all the way around the pipe inside the edge of the coupling.

If you've never soldered before, you should practice before doing this repair. Botched soldered joints could result in water damage and additional repair work that is greater than the original problem. Of course, a licensed plumber will make short work of this job and is an excellent alternative to DIY when money for the repair is available.

Good luck!

Dec 18, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Has Leaking noise very audible on hotwater line but no flood in the house or outside the house, and the water meter records unusually high. Three certified plumbers checked the house but could not find...


First, find out if you have a leak.
Turn off all water faucets inside and outside.
Record water meter register with camera.
Wait several hours.
Record water meter register again, and compare photos.
If you have a leak, contact city water department and report leak so bill can possibly be adjusted.
Ask city water department what they suggest.

If you had certified plumbers look at problem, it would be a guessing game for internet plumber to start listing things.

My guess would be crossover on single-handled faucet that runs the hot water into cold pipe that is filling the swimming pool that is leaking. But you might not have a swimming pool.
http://waterheatertimer.org/Crossover.html

Another guess would be a leaking TP valve that drains directly into a sewer vent line.
But certainly the plumber checked the TP valve.
http://waterheatertimer.org/How-to-replace-TP-valve.html

Add a comment and say how the problem was solved.

Sep 24, 2011 | Water Heaters

1 Answer

I have a 50 gallon rheem direct vent natural gas heater. The pilot light goes out on an infrequent but aggravating basis. I replaced the thermocouple one time and it got better for about a year but has...


Open following links for pilot light help:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/images/Negative-pressure.jpg
http://waterheatertimer.org/pdf/Bosch_Ventilating_tight_houses.pdf

Since pilot light goes out and can be re-lit, problem is probably not thermocouple, gas control valve, or air in gas line. But these things can factor in as contributing factors.
Problem is likely one of following or combination of following including dirty burner parts, tight house, incorrect vent lengths, negative pressure caused by other venting appliances, condensation dripping down into combustion area, and inadequate oxygen supply due to hot or closed-off room or attic location.

Gas water heaters draw air from surrounding area. If water heater is located inside house, then air has to enter home through cracks and when doors and windows are opened. Other gas appliances and vent fans also draw air from same indoor area. When other vent fans turn on, air can be drawn down the water heater vent and blow out pilot light.
Inspect combustion chamber to make sure there is no condensate water dripping down from incorrect vent that is putting out flame. If combustion chamber is dry, then close doors and windows. Turn on all vent fans and gas appliances that vent outdoors, and see if water heater pilot goes out.
Consult with plumber or product manual about proper horizontal and vertical lengths of vent pipe for your model. Have plumber clean combustion parts and inspect vent termination and check gas pressure and bleed gas line.
Add louver opening to outdoors so air can enter room where water heater is located.

Aug 05, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

When the hot water heater is running water leaks from the chimney. the pipe from the heater to the chimney is dry upon removal. about 3 gals. of water leaks from the chimney with two showers.


If I understand correctly, your Bock gas water heater vent is causing water to leak down into chimney.
This is a very serious concern

Water leaking from water heater flue indicates improper venting.
The hot air gasses from water heater combustion contain water vapor, but the gas should vent out of house before condensate forms on pipes.
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html#flue

The problem might be caused by a power vented furnace that pushes vent air from furnace down into flue pipe for water heater. As a result, the water heater doesn't vent properly.
There could also be a clog.
Light a match under water heater draft hood and see if smoke from match travels instantly upward.

There are two major concerns.
1) If vent is not working, it means that odorless CO gas is entering home instead of venting outdoors.
CO carbon monoxide is deadly poison.
http://en.wikipedia.org/wiki/CO_poisoning
This is a very serious concern
You can buy CO detector after vent is repaired.

2) Water condensate will eventually rust away vent pipes because of acidic content of the combustion vapor. It can be expensive to replace pipes, and pipes with holes pose risk of CO poisoning.

My suggestion is call a qualified plumber ASAP and explain what you observe.
Plumber will want to inspect the vent pipes, and may want to extend water heater vent pipe up further inside chimney so furnace is not pushing air back into water heater vent.
Plumber may also find blockage somewhere in the vent stack or chimney.
Also post on a professional water heater forum like the Tank to double check anything the plumber says to you. These are the pros.
http://www.thetankatwaterheaterrescue.com/forums/forum3/

Dec 25, 2010 | RTO Bock Water Heaters 32E 32 gal 104,000...

1 Answer

Therm-x-trol st-12 leaking


Never seen one leak other from the seam or the top or bottom.

Mar 14, 2009 | Amtrol ST-12-C THERM-X-TROL ASME Expansion...

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