Central heating wiring

[jddevel]

Will post this in both plumbing and electrical sections. Hopefully to get suggestions.
System is unvented boiler with a ACV (type of thermal store-see http://www.acv-uk.com/sle.htm) plus two manifolds of underfloor heating ( this is not really important as both will be calling for heat as and when controlled by thermostats-Uponor system) so call it central heating Plus as house has four ensuites and all have a towel rail want to - indeed I believe now have to be controlled by a spring shut valve. Question is recommendation to wire up the two port valve proposed to service towel rails. Seems as if a mix of Y plan and S plan but really the rails only need to be on when towels are wet after shower. Any suggestions??

 

[londonboy]

Can't you use a two port for each 'zone'.

Ie:
hot water
ufh 1
ufh 2
towel rails

Then use 3 timers or a horstmann 3 channel timer, with the output connected to the brown of each valve.

The only problem is you can't have a roomstat (that i know of) in the bathroom to turn off the towel rail once its reached temp. Or you could put a trv on it.

 

[jddevel]

Did think of just using two port valves (S Plan?) but as Uponor system is the latest wireless system and its the first time I`ve used it trying to make it as simple as possible for this old brain. What about a humidistat on the towel rails. Anything on the market?

 

[londonboy]

Yeh my idea is like an s plan, just with two more zones.
Im not sure, I havent seen anything like that.
Maybe a trv is the best option? Try plumbing and heating section!

 

[Taylortwocities]

Why not run the rads off the DHW side rather than the heating side.