No heating after radiator ad

Question

Hello. I have glowworm micron and unvented hw cylinder. I installed a radiator in garage conversion by fitting tees in flow and return pipes just above a boiler. After refilling of system and bleeding pump and all radiators they are not getting warm and boiler is overheating. What may cause that?

David · Accepted Answer

You have now installed a radiator which is  short circuited your heating system. this is  causing the boiler to overheat  because you now have only that one radiator working.

Robert · Answer

Looks like there is air system from boiler to pipe work above boiler try to release air from above boiler at highest level

Oberhiri · Answer

Sounds like a blockage in the system causing overheating.

Stanley · Answer

You have done something wrong when plumbing the rad in call a heating engineer to have a look

Zachary · Answer

Hi,

The system has an airlock or a blockage somewhere preventing flow.

On a separate note, radiators should only be tee'd off the radiator circuit itself and not the boiler 'primaries' as this will effect the boiler, both in flow, controllability and temperature sensing.

Regards
Gasworks Ltd

Phillip · Answer

This type of installation is not usually attempted by non professionals.
The level of variables that could be involved are too many to practically and safely offer help by text/email.
We would suggest you telephone for professional assistance.

Chay · Answer

It could be a simple as an air lock in the boiler. But I would strongly suggest getting an engineer to attend and take care of your issue

Keith · Answer

U have tees in wrong side of pump, needs to take flow to pump

No heating after radiator ad

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