No always on radiator on unvented system

purpleparrotuk

Had a new boiler and some new rads installed just over a month ago. This was setup as an unvented system. I also had a Honeywell Evohome installed for zoned heating. I don’t appear to have a radiator with no trv that is always on. Is this unusual?

bris

No, you will probably have a bypass installed. It will look something like this. https://www.screwfix.com/p/honeywell-straight-auto-bypass-valve-22mm/34127?kpid=34127&ds_rl=1249799&ds_rl=1245250&ds_rl=1249481&gclid=EAIaIQobChMIt6HOw_ao2AIVpLDtCh0dOwc8EAQYBSABEgK_rfD_BwE&gclsrc=aw.ds&dclid=CMPDoMn2qNgCFVM-GwodHbsJnA Look for it somewhere on the pipework connecting the flow and return.


If not ask the installer about it.

Ruski

Or it may be internal to the boiler...

HTH

Russ

purpleparrotuk

Ruski wrote: »

Or it may be internal to the boiler...

HTH

Russ

Thanks, checked with installer and it is indeed inside the boiler :-)