Need two zone heating system upgrade

[purplemonkey]

hi, I'm just about to embark on adding a new zone to my central heating system. At the moment I am servicing my flat with my boiler and a honeywell wireless thermostat.

I'm just finishing off a new flat in the front of my building which will be used less than the main flat.

What I'd like to do now is add that new flat to the central heating system, but I want it to be able to independently control its own heating. So I want two thermostats, one for each flat. Plus I understand I will need some mechanical valves. There is a small problem that is one of the rads on the main home is on the way to the new flat (I'll try and up load a drawing if requested). This basically means I don't have a natural tee point, unless I re-plumb this outrigger rad.

I saw this kit http://www.screwfix.com/p/honeywell-smartfit-7-day-s-plan-heating-pack/81398 which has two actuators, so maybe this will work for what I need? only problem I can see it only has one thermostat.

Can anyone suggest I product or set of products that I could get to achieve this, I'm sure its pretty standard practice.



Image:

 

[Dan Robinson]

Drawing please as your description makes no sense.

Do wish people would stop making up terminology

Products in that link are long obsolete anyway.

 

[Dan Robinson]

Plus that is an S plan.

Not S plan Plus.

Which is what you want.

Evohome - or two single zone thermostats and an RF Gateway would fit the bill control wise.

 

[purplemonkey]

Hi Got the image uploaded. sorry for making up terminology, it is fun though

 

[Dan Robinson]

You'll need to bring the tee back to wherever the boiler or airing cupboard is and valve form there.

 

[purplemonkey]

yeah I was hoping that wouldn't be the case, the pipes currently go round a very complex area in the house.

To be honest that one radiator is in a bathroom so I'm not that worried if it comes on with both zones.

could I just install two values just after the obvious T junctions and let that one rad work on both Zones?

Sorry these might appear silly questions but at the moment I've no idea of the way these zone valves work.

 

[Dan Robinson]

Look at Evohome then.

Zone valve work by valving off zones automatically by command of a timer/thermostat/programmable thermostat.

These valves have to be in a space where they are serviceable - putting them under the floor is not a good idea.

 

[Dan Robinson]

If you valve to the left of the initial tee in your drawing, then bathroom rad will only come on with the flat.

 

[Dan Robinson]

Evo will let you control everything as desired.

RF signals permitting of course.

 

[purplemonkey]

Look at Evohome then.

Zone valve work by valving off zones automatically by command of a timer/thermostat/programmable thermostat.

These valves have to be in a space where they are serviceable - putting them under the floor is not a good idea.

Yeah thats going to be ok, well not ideal but I will put in some inspection hatches.
thanks for your info so far.

As I already have a wireless thermostat, do I just need to buy the valves and another wireless thermostat. I'm thinking the clever wiring all happens from the boiler and wireless receiver? do I need a special receiver?

 

[purplemonkey]

I want to avoid the Evohome as its appears to be a simple but expensive solution. and as my place is very long I think RF will be an issue.