Adding new radiator to heating system

[Harvest Fields]

.

Enough said mate. I agree

 

[ShaunCorbs]

That’s a Combi Boiler so yes them pipes you’ve found are correct

 

[Burger]

That’s a Combi Boiler so yes them pipes you’ve found are correct

That’s what I thought but look at the photo underneath, no hot and cold, so just fed to cylinder?

 

[Ian Auckland]

It looks as those

That’s a Combi Boiler so yes them pipes you’ve found are correct

It doesnt work like a combi, we only get hotwater if we set the timer on the side so it's not heated direct of the boiler.

 

[Ian Auckland]

There is a header tank in the loft and cylinder underneath on the 1st floor. We can still get hotwater is the boiler is off we use the switch next to the cylinder.

 

[Harvest Fields]

That’s a Combi Boiler so yes them pipes you’ve found are correct

Found a charger then??

 

[Ian Auckland]

It looks as tho those two 22mm are fed down back of boiler those valves put on end then teed back off up through the boiler.

 

[Ric2013]

Are you Plumbing only?

Yes. Not gas.

 

[Ian Auckland]

Any more thoughts on what type of system I have here? I assumed it was an open vented type system? There is a header tank in loft with cylinder underneath, but I dont think the boiler heats the water directly as we to set it.er next to the boiler to heat twice a day.

Thanks

 

[Riley]

Can you t off from any other local rad?

Wouldn’t risk it as you run the risk of stealing heat from the existing and ending up with two Luke warm rads

 

[ShaunCorbs]

I’m doubting myself now

So them pipes above the boiler only get hot when you turn the ch on?

They don’t get warm with the hot water ?

 

[ShaunCorbs]

Wouldn’t risk it as you run the risk of stealing heat from the existing and ending up with two Luke warm rads

If it’s 15mm you should be fine aslong as it’s not massive

 

[Riley]

Still risky as likelihood is that rad isn’t sized

 

[Burger]

Still risky as likelihood is that rad isn’t sized

Is it not just a matter of balancing though?

 

[Riley]

Not if the rads are too big for the pipes

 

[Ian Auckland]

I am assuming the two pipes in the photos above flows in and return pipes from the cylinder to the boiler? what is the actual job of the boiler if its not heating hot water direct is just being used as a pump?
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I’m doubting myself now

So them pipes above the boiler only get hot when you turn the ch on?

They don’t get warm with the hot water ?

Hello,

Know they do not get warm with the hot water, I will try with the heating later.

 

[Ric2013]

This is getting silly. Look up diagrams for S plan, C plan, Y plan and W plan and you'll see what I mean below:

The boiler makes hot water which can be fed through radiators or through a heat-exchanger coil inside the hot water cylinder. If the pump is incorporated inside the boiler, then the pump will run when there is no flame but when the system needs heat. Boilers are often run in conditions where the heat requirement is less than the boiler's capacity and so the older boilers used to modify their duty cycle (i.e. they'd switch the gas on and off but keep the water flowing at the right temperature by running the pump). If the pump is not inside the boiler, the boiler may still have control of the pump and be able to switch it on and off.

So a boiler can heat the room or the stored water (and, in many systems, both at once). What you need to find are the sections of pipes that run heated water to and from the radiators but that do not run heated water when only the cylinder is being heated. Look up the 'three tee rule' too. It's actually really simple if you have a logical brain and if not, you'll struggle. It's also really awkward sometimes to manage to follow where the pipes go and what they are doing when nothing's labelled and half of it is hidden, or when the system hobbles along but is fundementally incorrect (which is more common than it should be).