room thermostat wiring

[4dgordy]

Hello all
I am in the process of renewing my central heating and want to install room thermostats in 4 rooms. ( old draughty house makes the TRV's useless)
So in my hot water cupboard I have the junction box for the heating and water, the wiring to the motorised valve for the C/H appears okay so if I was to run these connections to each room with an independent motorised valve and thereafter to a room thermostat and thus do away with the main C/H motorised valve altogether ? does this sound right?
Just to be clear the junction box has a live, neutral, earth, pump live, boiler live, the rest are HW only.
I have 5 core cable to run the wiring, danfoss room thermostats and siemens motorised valves.
The only problem I have is the Rayburn ( 460k ) appears to not be wired up as per its own literature and the minute I switch the fused spur on the wall, the Rayburn is live all I have to do is turn the dial on the front and the heating comes on irrespective of the fact all other controls are all off
I have tried to get a sparky but am struggling so any help would be greatly appreciated

 

[twgas]

Not sure how you intend to do it but it wont be as easy as you think.

 

[picasso]

you would be better off spending your money on insulation and draught proofing, why would you want to zone 4 rooms,? (I am assuming they are all next to each other), if you want to upgrade get your boiler wired correctly so that it works on room/cylinder stats.