Condensing boiler and TRV

[pilgrim]

I found an article which suggested...
1. that you can't set up room thermostat and a TRV in the same room.
2. TRV is useful with boilers which have a bypass.
3. and the article also mentioned that with a condensing boiler you shouldn't use too many TRV's - about a third of the radiators should have one.

I'm planning to have a BAXI 130 HE (condensing boiler with a non automatic integral bypass), but my gas engineer would prefer to set up TRV's an each radiator and a programmer.

From my research, I would prefer to set up a Programmable Room Thermostat (the BAXI Intellistat), what is the right numbers of TRV's, if any, I should have, in combination with this?

 

[DP]

See Buildings Regs article on www.regainuk.org

My preference is to instal TRVs on rads that are south facing and on rads where rooms are subjected to other heat sources.

A more prefered approach would be to create two zones (sleeping and living) with two timers/thermostats for independent temperature control.

Danfoss TP5 cannot be touched for simplicity of programming and ease of use.

 

[pilgrim]

Thank you so much DP.
It is great help.