Question about RTO Takagi Flash T-K3-OS-NG Tankless Water Heater - Natural Gas

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My tankless hot water heater squeals while running the hot water

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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

  • 234 Answers

SOURCE: Morco F 11E tankless water heater Slight problem

One more thing ,they do make a valve call mixing valve.That's to mix the water hot,cold to a temp. you want.Most restranrest have them in the water lines at the restroom.They suspose to keep it around 110 deg.

Posted on Mar 18, 2009

  • 250 Answers

SOURCE: tankless on demand water heater.

Tankless water heaters normally take a little longer than a regular heater to provide hot water because they have to start and get warmed up. I'm guessing the heater uses a pilot light and that the short amount of hot water when you turn on the tap is hot because when the water is sitting still in the heater the heat from the pilot light is enough to get it hot. The tub faucet will get hot a lot faster than the shower because it lets a lot more water through and empties out the pipes faster than the shower. You could probably speed things up by letting the tub faucet run on completely hot for like 10-15 seconds and then turning on the shower.

Posted on Oct 24, 2009

  • 150 Answers

SOURCE: Tankless water heater not meeting the need

Yes the faucet could be a problem. Try changing for one which you know is ok.
The long run of pipework - each bend, elbow or joint all have a reducing effect on the flow, maybe enough to matter with a restricted outlet. none of this can be altered except by renewing with larger bore pipe - expensive!
Also there should be a dirt filter in the mains water input line/pipe. Try removing & cleaning. Try also removing , reconnecting and then the hot tap [faucet]

The boiler will have an actuator valve which fires it up when a certain flow of water is reached. If the flow is reduced AND the valve is worn, maybe a replacement. Not sure about it's USA construction but in the UK [it's called a diverter valve] many have a rubber diaphragm which is cheap to replace
Check also if it uses a flow sensor switch
Had a look at the Takagi web site and there are pdf's of manuals
takagi.com
Overall I am still thinking that the main prob is in the flow.
Hope I've helped - come back anytime
Rod.Davies

Posted on Feb 22, 2010

SOURCE: I have a Marey LPG

Ok i intall tankless water heaters and sell them and repair them . The trouble your are hving is more than likely ,the mixing valve on your shower has a ajustment on it to prevent you from burning your self . that is the number one reason in showers when water never get to temp . What it is doing is addng cold water to your shower for you bummer . Take handle off and adjust water temp to your hottest setting . Some times you have to remove the low flow washer in shower head to get the right flow . also every time you start up your hot water it shouldbe set all the way ot other wise withe the battery 2 D models the unit will not sence flow and shut off the unit ,with some units it is a fine balancing act to get them adjusted right. If your buying a tankless water heater always buy a blower type unit that has a computer that runs it . You will be happy . If the Battery operated unit is for a cottage or a smallcabin then your just going to have to fix the pumbing to make it work right many of the safety features of the newer showers are not made to work well with tankless water heaters .
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Posted on Apr 05, 2012

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1 Answer

Can i use the pipe ihad for my 40 gallon hot water heater


If you had a tank-type heater, and installed tankless, then you cannot use the same gas line pipe. You must have 1" gas line running to within 10' of tankless unit, and then 3/4" to tankless... and you cannot use flexible gas line.
You can use same hot and cold water pipes, but install service valves so you can delime the heat exchanger each year.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Gene


Water Heater Timers Save Money

Mar 21, 2015 | Rheem RTG20169DVG Tankless Pipe Cover

1 Answer

Our tankless hot water heater runs cold sometimes.


Check for crossover: Where bad faucet cartridge or check valve lets cold enter hot pipe so hot never arrives at tap.
http://waterheatertimer.org/Crossover.html
If problem is not plumbing, then add a comment and describe which water heater you have, including approx age and what has been done so far.
Call local plumber to fix tank-type heater
If you have tankless, call manufacturer to get list of local technicians who work on these computers that heat water, or save money and tear it off wall and install tank-type heater today.
http://waterheatertimer.org/How-to-install-gas-water-heater.html
Gene

Aug 04, 2013 | Bosch & Tankless LP Hot Water Heater

1 Answer

I have a recently installed richmond water heater. When the shower is running and someone turns the faucet on in the kitchen the water gets drastically colder in the shower. We didnt have that problem with...


Which type Richmond water heater?
Is this a tankless water heater or tank-type?

Tankless are notorious for 'cold water sandwich' under exact conditions you describe. You might need tankless with larger BTU burner.
Don't install a tankless.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

If you have tank-type water heater, then I suspect a clog in the hot water line, or single-handle faucet cartridge in show is going bad.
Same problems can contribute to tankless problems.
http://waterheatertimer.org/Low-hot-water-pressure.html

Aug 06, 2012 | Rheem Richmond

1 Answer

Squealing noise inside the tank


Does the water come out really hot while it is squealing? This is sounding like the water flow is not fast enough and is heating to almost a boiling point. I have experienced this myself with gas heaters. If you open the hot water valve more in your bath or shower does the sound go away?

Jan 29, 2011 | Rheem Direct Vent Natural Gas Tankless...

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Tankless Hot Water Heater Rtg-74pvp-2 7.4 Gpm: hi i have a rheem tankless water heater, with flas...


Sounds like you may have the wrong type gas going to this? Is this an LP gas or natural gas unit? will say on label. Natural gas units run only on natural gas ditto for LP. Could be issue with manifold pressure settings. Could be obstruction in exchanger or vent. Have a authorized technician check over

May 17, 2010 | Rheem Tankless Hot Water Heater...

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Tankless Hot Water Heater Rtg-74pvp-2 7.4 Gpm: Unit isn't turning on when I turn on the hot water...


Has it ever run? Is cold water going to cold water inlet? Hot out to hot water piping? Power ON? Control pad on? gas pressure correct?

May 16, 2010 | Rheem Tankless Hot Water Heater...

1 Answer

Error EA


Welcome to Fixya
you have a Bosch tankless water heater your heater is not pumping out hot water?
Please send model # Thankyou

Dec 15, 2008 | Bosch & Tankless LP Hot Water Heater

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