Automatic Bypass and trvs

[leakeee]

Hi all

Im doing a boiler change fitting a Ideal Logic Combi 35.

The room stat is in the hallway with door to living room, Iv fitted trvs on all rads as there isnt a rad in the hallway or landing.

The manuf/ instructions say that a bypass comes built in as standard, but turning over the page it also says "if trvs are fitted

on all rads a bypass must be fitted"

I would say not to fit one as it says there is one..

What are your opinions?

Thanks

 

[Mike Jackson]

The inbuilt bypass is not enough if all rads have TRVs fitted. You're likely to cause the pump to fail prematurely. To comply with part L the stat should be in the same room as a radiator with no TRV fitted.

 

[leakeee]

ok cheers! i could move the stat to the living/dinning room but there would be 3 rads without trvs and the customer said she wants trvs on them.

 

[tamz]

It is a bit of a compromise but leave the biggest lounge rad without the trv and fit the stat in there.

 

[doitmyself]

there would be 3 rads without trvs and the customer said she wants trvs on them.

Have you explained to the customer that a thermostat does the same job as a TRV and also turns the boiler off when the room is up to temperature; saving her MONEY?

Tamz suggestion is a good compromise (stat in living room, 2 rads with TRV, one without)