Towel Rails on the DHW primary circuit

[Worcester]

I've just received a tender document for a major refurb and the architects specification calls for the towel rails to be installed on the DHW cylinder primaries. (Fully pumped, unvented heating system)

This used to be common practice a few years back, - I can't find any reference to whether it is or isn't allowed under the current building regs - can anyone point in the correction direction, or so long as they have TRV's on them, is it a still allowed practice?

 

[Meady]

Pretty sure it isn't allowed any more, I think you have to put them on their own separate zone valve so they are controllable.

 

[LaMont5way]

You fitting Bermuda or staying coal?

 

[Worcester]

Pretty sure it isn't allowed any more, I think you have to put them on their own separate zone valve so they are controllable.

That's what I thought, gone through the regs, can't see it though, maybe I'm missing it..

TRV's = controllable?

 

[voivod]

is allowed now
will try and find link

 

[SimonG]

Pretty sure it is allowed.