TRVs with automatic bypass? Or open rad?

[Yorkshirebloke]

Hello all.
As per usual, there seems to be lots of conflicting advice on the net, so I need some direction from the pros!
Would you suggest I run 1 or 2 rads maybe without TRVs, or would it be acceptable to run all the rads (including towel rads) with a TRV and then for an automatic bypass?

Cheers everyone
Alex

Edit: intergas eco rf24 and joule 250l twin coil tank if it matters.

 

[oldbutnotdead]

The rad in the room where the heating thermostat is shouldn't have a TRV on it- you could get loads of fun with the system chasing its tail that way. Me I'd have the towel rail not on a TRV as well.

 

[shambolic]

On our boilers 10% of the boiler minimum heating load must be served by an uncontrolled rad fitted with a boiler interlock(room stat).
Your system has 2 or more zones so would need an auto bypass before zone valves tee off (if that boiler has a pump overrun?)

 

[shambolic]

Looking at your other thread. You will need both

 

[Yorkshirebloke]

Thanks for that bud.
I'm looking at the Honeywell du144 valve. Any known problems with it?
So automatic bypass and a rad without TRV? Have I read that right?
Alex