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Boiler won't ignite for hot water unless heating is on.


If this is in a RV the propane monitoring valve may require more gas flow to turn on than the water heater requires. A central heating system requires substantial gas flow so when the monitoring valve opens to fire the central heating, there is enough gas flow to also fire the water heater.

Jan 26, 2016 | Water Water Heaters

2 Answers

Hot water varies


I do not know how old this unit is or what model but many water heaters are not sophisticated enough to measure the temperature, but heat based on water flow and temperature rise. To start, tankless water heaters turn off every time you turn the hot water off. Lets use an example. You use the facilities, wash your hands then turned off the water and take a shower. You will bring the already heated water (from washing your hands) from the pipe up to the shower. Then the cold water that comes into the pipe from the reactivation of the water heater comes up the hot water pipe with warm then hot water just behind.

If this is not your problem, keep reading. Every unit I have been called to see were installed wrong. Check your installation manual to see if the problem with the system started with the contractor.

First, check the temperature of the water from the heater. If it is too hot and you are mixing too much cold water in, the unit will turn off because there is not enough water flow to keep it running.

Second, turn off the valve at the water heater and turn on the hot water at a faucet. If the water does not stop running, there is a "plumbing cross over" usually caused by a failing pressure balance valve in a shower.

Third, if the unit has not been serviced, go to bosch-climate.us to find a tankless water heating professional in your area. Totally Tankless LLC

Mar 14, 2014 | Bosch & Tankless LP Hot Water Heater

1 Answer

How do i get even heat thru out the house with a daka wood stove


http://www.hearth.com/talk/categories/main-hearth-forums.4/
You burn wood, and smoke goes up flueway.
You're not running chimney smoke through ductwork so you have a heat exchanger.
What kind of heat exchanger?
probably air since you're running through ductwork?
How much hot air or hot water is coming off heat exchanger?
How big of a space can be heated with that amount of heat?
Is the exchanger located in optimal location?

Considerations.
One room log cabin with fireplace will not stay very warm.
One room house with big wood burning stove in center, with hot flue pipe running across the room and exiting on far wall, will get warm-hot, but will cool off fast.
Why?
Because the BTU output of firewood is much less than electric, coal, oil, or gas.
Otherwise they would have made wood-burning steam locomotives. But the locomotive boiler cannot get hot enough with wood ... the boiler needs coal to produce enough BTUs to boil water fast enough to rotate the turbine and turn the wheels.

Maybe your wood stove output should be measured.
Don't forget a huge percentage of fire heat goes straight up flueway.

Mar 16, 2013 | Lux Tx500 Series Smart Temp Electronic...

1 Answer

The water never gets hot when on normal settings


This time of year the water comming in the house is much colder and heater has to work a lot harder to heat 40deg. water than ot does to heat 70deg water in the summer time. its normal.

Jan 09, 2013 | Water Heaters

1 Answer

MY Rheem 81SV40D Water Heater (47 gal) does not heat enough water. Approximately one bath worth.


You have dual-element 240Volt electric water heater.
Since you have some hot water, then we know upper element is good, and that circuit breaker and electricity to water heater are good.
Not enough hot water is probably bad lower element, and possibly sediment build-up in bottom of tank.
Test element:
http://waterheatertimer.org/How-to-test-water-heater-element.html
Replace 4500 watt element available at local hardware, and clean out bottom of tank:
http://waterheatertimer.org/How-to-replace-water-heater-element.html

Oct 07, 2012 | Rheem Tankless Hot Water Heater...

1 Answer

I installed a 30 gallon gas hot water tank and sometimes i get strong water pressure but my hot water doesn't last long enough for 2 showers, but if i have low water pressure we can get in 4 showers. Any...


At a high pressure you are consuming more hot water. It sounds to me like the water heater isn't big enough for what you need. You can try turning up the heat thermostat on the water tank. If the water gets hotter you won't need as much for each shower and it will also recover faster at a higger temperature.

Mar 26, 2011 | Whirlpool Water Heaters

2 Answers

Not heating water hot enough or as much water.


You probably have a bad heating element. Probably the upper element.

Feb 03, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

My Reliance 606 40 gallon water heater only heats up enough hot water to fill a bathtub. We've drained it, the pilot light is fine, it heats up the water really hot, but it just doesn't seem to be able to...


How big is your bathtub? Is your water heater set on the hottest setting? What is the temperature of the hot water at the tap?

Keep in mind that hot water can cause severe burns. Children and those with diminished mental capacity can be seriously harmed by hot water.

The "40 Gallon" rating on the water heater is usually the amount of hot water the unit can produce in one hour. So the tank, and the amount of immediately available hot water, might be smaller than 40 gallons.

My bathtub is 2 feet wide by 1 foot deep and 4 feet long. This is 8 cubic feet or almost 60 gallons. So a 40 gallons of water at 120 degrees, mixed with 20 gallons of cold water (60 degrees), fills the tub with 100 degree water. My January cold water is 42 degrees, so it will take 40 gallons at 129 degrees to fill the tub. If the tub is cold to start it will take even hotter water.

So the water heater might be just fine.

Possible solutions:
1. turn the temperature up on your water heater- or the temperature control could be malfunctioning and not getting the water hot enough.
2. insulate your hot water pipes so that the water loses less heat on the way to the tub.
3. bigger water heater.
4. smaller bathtub, or less full bathtub.


Jan 04, 2010 | RELIANCE ELECTRIC WATER HEATER

2 Answers

Alpha 240e boiler wont fire up for hot water, will for heating


most likely the diverter valve.. when hot tap turned on the movement of the water through the valve operates a diaphragm which pushes a pin/button//switch to tell the boiler to fire up

Aug 21, 2009 | Water Heaters

2 Answers

Triton t90i shower doesn't heat water and lacks power.its about 5yrs old and is used every day


it is temp contrl shower and you could have to take out the cartdrige and change it,, probly clogged and it's not letting the hot water be hot enough, if the pressure is good then the cartridge is bad

Apr 20, 2009 | Water Heaters

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