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Heating working but hot water not why ? - Water Heaters

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  • Water Heaters Master
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Bad single-handled faucet cartridge or check valve allowing cold water to enter hot pipe, so hot never arrives:
Test for crossover
http://waterheatertimer.org/Crossover.html

Posted on Apr 22, 2013

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Posted on Jan 02, 2017

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Water heater


Most instant-on tankless water heaters require at least 10 psi of water pressure to start the heating process. The flow of water determines how hot the water will be, within the heating range. An electric 110 volts heater will increase the water temperature about 25 degrees F. A gas water heater will increase the water temperature about 45 degrees F.
Too much flow will not allow the water time to heat. Too little flow will not allow the heating system to work. Each heater must have the outflow water flow adjusted for the best heating outcomes. The best way to find the ideal flow is to turn the hot water facet on and adjust it (open or close) until the water reaches the balance of producing hot water.

Apr 25, 2016 | Water Water Heaters

1 Answer

My central heating turns off when i turn the hot water tap on. when i turn it off the central heating doesn't come back back on until i turn the power off and on.


Combi-boiler-turn hot water tap on/off and the heating stops for ...

singletrackworld.com/.../combi-boiler-turn-hot-water-tap-onoff-and-the-...
Combi-boiler-turn hot water tap on/off and the heating stops for 20secs ... hot watertakes priority over central heating so when you run the hot tap, heating is ... Yeah onmy worcester combi there is a diverter valve - it feeds either the heating or ...

My central heating works but I have no hot water - 24'7 ...

https://www.247homerescue.co.uk/my-central-heating-works-but-i-have-...
Diverter valves switch heat between the hot water and the central heating. When youturn your hot tap on, the diverter valve temporarily shuts off the water supply ...

Does your boiler keep switching itself off? Here's why ...

www.dhs-uk.com/does-your-boiler-keep-switching-itself-off-heres-why/
Jul 7, 2015 - ... Bathroom Suites, - Showers, - Wet Rooms, - Taps and Accessories, Information and ... Low water pressure can cause your boiler to turn itself off. ... boiler is not turning off, you aren't getting the amount of hot water you require. ... If there is air in your central heating system, then your boiler may shut down.

Feb 09, 2016 | Water Water Heaters

1 Answer

Want to shut off my hotwater heater and still run my boilerhave base board heat


Turn off water but leave heat on - Possible? - Handyman WIRE ...

handymanwire.com > ... > Heating and Air Conditioning

Jan 14, 2003 - 10 posts
My hot water baseboard heating system is a closed system. ... Could I shut off the main water and leave the boiler and heat going for ... If one is not installed, install one and rely on that to save the boiler from the damage of running out of ... I do not wantto have city water push my antifreeze out of the system ...

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Nov 21, 2010 - With hot water baseboard heating, is it better to keep the heat at 60+ degrees ... a hot water heating system where water is heated in a hot water boiler and then ... by setting the thermostat to lower the heat when you don't need it on. ... Not only do I turn my heat down when I leave for work in the am but also ...

Jan 17, 2016 | Water Heaters

1 Answer

Need to separate heating and hot water - just have hot water on


You need a heating engineer to come in and do this.

Sep 09, 2017 | Water Water Heaters

2 Answers

I HAVE WORCESTER 24SI BOILER , THE HEATING IS WORKING BUT NO HOT WATER THANKS.


Hi Mustafa, you are going to need a Gas Engineer to fix this one. It could either be the Hot water sensor or the flow switch that activates the water to come on. Good Luck.

Jan 03, 2015 | Water Water Heaters

1 Answer

Oil furnace only produces cool water intermittedly and only when heat is actively on


For clarity, a Furnace produces HOT AIR for heat while a boiler produces HOT WATER for heat. Just remember...boil = water. You said your "furnace" does not produce hot water for a shower and because furnaces do not product hot water unless they have some model that do???? Usually people with a furnace have a seperate hot water heater. People with boilers though can produce hot water for use as both their sinks/showers hot water and their heat (by heating water that goes through baseboards) in their house. I don't believe any furnaces produce hot water most of the time a furnace just produces hot air for heating. So figure out what you first have.
Having said that, I'll assume you have a boiler like I do and my Weil McClean(sp?) stopped working a while back and wasn't turning on to "boil" any water. I took apart the burner and there is a light sensing photo resistor as part of the controls. If this phto resistor goes bad, the boiler will not start. The resister is cheap, I think it was $8 but you have to know what you're doing to change it. So you may be better to call someone who can work on such equipment.
Boiler's themselves are not overly complex. Home heating oil is the same diesel fuel that you can buy in a gas station only the government has "oil" companies put a RED die in home heating fuel which is usually cheaper then Diesel fuel because diesel fuel is taxed to death. The reason they do that is so that if you try putting RED tinted home heating fuel in your truck and you get pulled over (because you're a trucker with and 18 wheeler and they typically do inspections of these trucks) you will be a huge fine if they see you're running home heating fuel and NOT paying your taxed by purchasing Diesel fuel. A little bit of background so you know the fuel you are dealing with here. So it's dieslel fuel without the tax you run in your boiler. Gasoline on the other hand is VERY explosive as you know, but diesel fuel (if you're ever tried to light it) takes some coaxing to get lit. When it's cold out, diesel fuel is very hard to light and that's why trucks use glow plugs. You don't need those in your home though.
But because diesel fuel/home heating oil is hard to light, it's sprayed as a msit into your boiler, so that it can light more easily.
But because it is a fuel, you should know what you're doing when messing with it. FInd out what you have, and then have someone work on the issue if you haven't already. I'm guessing you have had it fixed by now?

Mar 21, 2014 | Water Heaters

1 Answer

How does an electrial water heater work


it uses resistive heating elements that are encased in an electrical insulation and then covered with metal, like the cooking elements in a stove, or on a cooktop range. when electricity flows through them they heat up and get hot (like a light bulb filament wire glows) When the water reaches a certain temperature set on the thermostat, it opens the electricity,turns it off to the element until the water cools down past whatever temperature it is set at, and then it turns back on. That is why if too many people take a shower you will run out of hot water because cold water is always flowing through the water heater and when all the hot water is used, you have to wait for the heating elements to heat the water back up. To make sure it heats up quickly make sure all the HOT water faucets are off so that water isn't flowing through it and is just sitting there heating up. All work on the same principle.

Nov 09, 2009 | Electra 11-1/2" Water Heater

1 Answer

No hot water - but got heating


coil is not good. FIrst try cleaning coil with ultrasound, if it doesn't work, replace the coil, or you can or add external hot water heater if you prefer.
good luck

Oct 09, 2009 | Water Heaters

1 Answer

Heating circuit getting hot when hot water is running


Check to see if diverter valve is in domestic mode or heating mode.

Jul 04, 2009 | Water Heaters

1 Answer

Central heating and hot water have suddenly stopped working


not an engineer but maybe a heating compant,, it sounds like you have a relay that has gone bad, you have what we call a winter summer system your domestic water comes from a tank inside the boiler, you might want to think about splitting the system to save you some money in the long run, seperate the water heater from the boiler so you only heat up in the winter, right now you are heating the system that heats your house to get 30 or 40 gals of domestic hot water, it would cost you less by seperating them

May 17, 2009 | Water Heaters

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