Tip & How-To about Water Heaters

Stop screws from loosening

It's a frequent problem. Every few days you need to re-tighten a set screw, faucet handle screw, or just about any small screw that's worked frequently. Stop this frequent tightening by applying a drop of clear nail polish to the screw threads before installing. The small amount of polish will dry and hold the screw in place for considerably longer than before but will not prevent you from removing the screw if necessary.

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1 Answer

heater takes more than 1 minute to get water to kit faucet , then temp fluctuates


1) Guesses: Sounds like a bad single-handled faucet cartridge, or low water flow at faucet, or clogged water filter.
Replace faucet cartridge, clean the aerator, and/or clean sediment out of pipes below sink, and clean water filter at tankless unit each month.

2) For exact measure of problem:
Typical faucet can have 2 gallon per minute flow rate.
2 gpm flow rate means faucet fills 1 gallon container in 30 seconds. Test faucet using 1 gallon container and a cooking timer to get flow rate.
Clean aerator to improve flow rate. Compare kitchen flow rate with other faucets in home.
http://waterheatertimer.org/Low-hot-water-pressure.html

Most homes have 1/2" diameter pipe running to kitchen faucet.
100 feet of 1/2" diameter pipe holds 1.2 gallons of water. This assumes no sediment build-up inside pipes.
http://waterheatertimer.org/Water-heater-recirculation-system.html

Assuming only hot is turned on: If faucet is 100 feet away from water heater, and pipe diameter is unobstructed 1/2" diameter, and faucet has 2 gallon per minute water flow, then hot water should arrive in 36 seconds.
50 feet away, and hot water should arrive in 18 seconds.

If kitchen has single handled faucet, and the handle is raised in the middle, then equal amounts of hot and cold water are drawn at same time. This doubles amount of time for hot water to arrive.

If single handle faucet has a bad cartridge, then faucet can have crossover.
Crossover means that cold water can enter the faucet even if faucet is turned to hot.
Bad single-handled faucet cartridge can delay or stop the arrival of hot water.
http://waterheatertimer.org/Crossover.html

Tankless require maintenance including cleaning combustion parts yearly, de-lime heat exchanger frequently, and clean water filter each month.
http://waterheatertimer.org/pdf/Tankless-maintenance.pdf
http://waterheatertimer.org/pdf/Bosch_Overcoming_fluctuating_temps.pdf
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

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Sep 15, 2011 | Rheem Direct Vent Natural Gas Tankless...

1 Answer

Our little gourmet dual hot/cold faucet has just started to gurgle out hot steaming water all day without use. The complete faucet is burning hot. Unit is 4 years old and used frequently.


having hot water trickle out all day will make the whole unit hot,, to the touch,, what you need to do , is turn off both the water supplys under the sink,, then remove the handle by removing the hold down screw,, after that , remove the hot water valve,, Just remove the nut that's on the outside of the fixture, what your going to find is at the end of that valve, is a washer,, made of hard rubber,, that needs replacing,, but also, inside of the fixture is a washer seat, its either brass or stainless steel,, that takes a seat tool wrench to remove that ,, but to make sure its repaired completely, both the washer and seat need to be replaced, seat tools are pretty inexpensive at Lowes , or Home depot,, and thats where you can get the parts you need also,, be sure and compare the old parts with the new, so take them with you when you go, most hardware stores that have plumbing supplies will have what you need, the seat just unscrews , but they can be a little tough,, if you decide to get a seat tool, they have straight ones and 90 degree ones ,, the straight ones you'll need a wrench to assist turning in the removal and install,

Aug 26, 2011 | Mountain Plumbing Products Little Gourmet...

1 Answer

Much smaller amount of hot water from electric water heater


sounds like an element is burned out. if your water heater lost its water, probably from siphoning, and the power was on, then it most likely burned out the element.

you will need to replace. replace both the upper and lower elements at the same time, don't just replace the one that's burned out.

turn off the power to the water heater, be sure to check with a volt meter to make sure its off. drain the water heater.

remove the wires from the elements, not the thermostat, and remove the element. on the newer water heaters they screw in. take that with you to the store so you can match it. get 2 of them.

be sure to use the new rubber washers that come with the elements and make sure the threads on the heater are clean. be careful not to drop or bang the elements against the heater when installing, they can be fragile.

do not over tighten! snug is good enough. when you get both elements installed, start filling the heater with water. if you have any leaks, tighten the elements a little more. now hook up the wires you removed from the elements. doesn't matter what position or screw they hook to.

start bleeding the air from the water heater, turn on the hot water on a faucet in the house, when it quits spurting air and runs water smoothly turn it off, and turn the power back on to the heater. use your amp meter to make sure. initially there will only be power at the top element 220v to 240v

make sure the thermostats are set evenly, (125* setting) if the settings are mismatched (one at 125 and one at 135) the heater will not function properly.

Jul 09, 2010 | Rheem 50 Gallon FVR NATGAS Water Heater...

3 Answers

Install trim and adjust the thermostat on a Grohe shower faucet


Before you install the temperature control knob, adjust the valve body (47111) with a wrench to set the temperature to "100 degree or close to it". Now, place the limit ring to tdc (top dead center) and control knob with the red 100-degree align to it. Your problem may have been the valve's temperature setting is out range when you installing the temperature control knob.

Jun 28, 2010 | Grohe Grohmix Thermostat Valve & Trim -...

1 Answer

The temperature in my shower is very luke warm only at the shower


Do you mean the other faucets in the house are hot and only the shower is warm? If so there is an anti-scald adjustment on the faucet that needs to be turned up a few notches. Havent adjusted a Grohe faucet but most faucets you rmove the handle and behind the handle is a nothced adjustment ring that prevents the faucet from getting too hot. This ring, or stop, is pulled out and twisted clockwise(or counter clockwise to set higher or lower max temp, then pushed back. maybe you can look up grohe to see which way ring or stop adjusts for hotter water.

Jan 23, 2010 | Grohe Integrated 1/2'' Shower Thermostatic...

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