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It could be a number of reasons. If it's still 'firing up' when you turn on the taps, it sounds like there could be a problem with the pump. If the pump is malfunctioning, the water will still heat a small amount of water, but then that has no way to get around the system efficiently.
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Thank you! Yes, it does fire up and the first bout of water is very hot, then it seems to go cold but if I then reduce the flow it stays warm and is fairly stable. It will eventually go cold but I'm assuming that's when the boiler stops firing due to the low flow.
I've also noticed that if I have the temperature on high on the shower, I have to reduce the flow much further to get warm water (just a trickle) whereas if I turn the temperature down, I can run it on a higher flow and achieve the same temperature.
What else can I help you with?
If your boiler is on constantly but radiators are off are you using energy?
Yes
Uses of boiler?
A boiler is primarily used for heating. Water is heated and forced through pipes to heating receptacles called radiators. Giant boilers are also used for electricity. Water is heated to turn giant turbines that produce electricity.
When inspecting a boiler always test the air bleed valves on the radiators?
yes
What is a Worcester Combi Boiler?
A Worcester Combi Boiler is a gas powered boiler that heats water that pumps into radiators to warm the house. It also gives you hot water whenever you want it.
How do you drain your baseboard radiators?
If there is no drain valve at the radiator you can drain the system at the drain valve on the boiler
When inspecting a boiler is it true always test the air bleed valves on the radiators?
Yeah. sure, why not?
What is water used in heating systems for?
As the pumped fluid carrying heat form the boiler to the radiators.
Can you use pex piping to hook up your boiler to radiators?
yes it will handle the heat as long as your boiler is started with copper
What is the maximun radiators that can be used with a boiler with max 40000 Btuh output?
Depends on how many sections of the radiator and the height and width
Where can one find information on the most common causes of boiler breakdowns?
The most common reason for a boiler to breakdown is due to loss of pressure. Loss of pressure may have been gradual and you may have heard water sloshing around the radiators for a week or two, or found radiators would not stay bled, after bleeding them.
What is a hydronic system?
A boiler with a circulating pump and pipes to convey heating water around a house, through radiators or underfloor pipes.
How do you bleed air from heating pipes on boiler?
There is a key similar to those on radiators on the boilers than can be turned round with an adjustable wrench etc.
