Wiring the hot water and heating programmer
Had the room TRVs fitted on 3 rads for the last 4 months along with the wired Thermostat. Not had any issues and all seems well.
So now i've decided to have the programmer as well for Hot water and heating. But have a few questions.
- I assume i have to replace the wired theromstat with the wireless one otherwise it'll have no control?
- Bit confused by the system. I think its a Y system as theres only 1 valve fitted not two. I have a water pump as well but thats not show on any of the instructions. Does that matter?
I'll try to explain the current wiring. I have a Randall 30 60 timer with 2 cables that go to a junction box (basically a row of choc block), the water pump, Cylendar stat, room stat and the, what i assume is, hot water valve (Md valve?)
the wiring in the choc block is....(hope this makes sense),
Pump (Blck), Cyl Stat (Brn), Valve (Orng) and Boiler (Rd) connected together
Cyl Stat (Bl) and Valve (Gr) connected
Cyl Stat (Brn) Timer point 4 (Blck) connected
Valve (Wht) and Room Stat (Yelw) Connected
Room Stat (rd) and Timer point 2 (Rd) connected
Mains (Rd) and Timer point 6 (Rd) connected
Pump (Bl), Valve (Bl), Room Stat (Bl), Mains (Bl), Timer pint 7 (Bl) and Boiler (Blck) connected
All earths conencted.
To replace the Randall with the Tado do i just follow the Y plan wiring in instructions? What happens about the Pump as thats wired in to all this? And do i need to wire in another Mains feed to the programmer?
If i can get my head around what happens with the Pump i think i can do this simply enough. Mains is fed from a switched fuse junction box, so will remove fuse as well as switching off at trip and testing for any live voltage before going ahead.
Attached a few pics that may help clear any confusion. If anyone can confirm in whats needed?