radiator thermostatic valves

[Mars]

Just had a quote for a new boiler, 12 radiator thermostats and a new hot water cylinder. £4,500.00

Think I will start by fitting the rad thermostats myself. Can anyone advise which are the most reliable type please.

 

[ChrisR]

Drayton TRV4's or Honeywell VT200's, probably. Anecdotal evidence really, nobody does proper tests!

 

[Mars]

OK thanks

 

[Mars]

I bought the Rolls Royce valves and need some info please. Can someone advise , I have a 30 year old Danesmore oil boiler 80,000 btu running 13 rads and a copper tank. The rads have a 28mm pumped circuit from the boiler and the hot water tank has a convection circuit, I think, need to check. However do I need to leave the bathroom rad so it can convect all the time? or can I fit trv's to all.
The info with the valves tells you not to fit one in the room with a room thermostat which makes perfect sense.
I remember 30 years ago I fitted a Coal boiler system and as you don't have a lot of control over the heat so you needed to get rid of exccess heat by convection.
Next year I intend to upgrade the boiler so I don't want to do anything that I have to change when I do upgrade.
any help is much appreciated.