Thermostats in each room?

[HMD]

Have a look here,
HouseHeat Wireless Radiator Valve Motor : My Greener Home, water butts, compost bins, energy meters, intellipanel, chimney balloon

 

[lamb]

If using a stat in each room you need a manifold on each floor, with actuators fitted onto it and a relay box with each manifold to send a run signal to the boiler.

 

[thepurple1]

you could wire them all up in parallel and then wire them into the boiler enable circuit so if any of the stat were to call for heating it would bring on the boiler

 

[lamb]

Yes, but that would bring every radiator on in the installation, which is why you need a manifold with actuators or motorised valves for each thermostat zone.

 

[StanFitz]

Any time i have done this it has been for an underfloor heating system. Each room is plumbed in its own loop. So therefore there is a stat to control each loop. It is a handy system when you get onto the run of it and gives the homeowner alot more control over the system. I have a system like this in my house if you need a pic a will post one

Hi Hawke81. I am a plumber fitting such a system in my own place ( 6 zones, 6 stats, 6 zone valves) will your pic give me some idea of how to wire them all up? if so can you help me. Thanks.

 

[truckster]

Stanfitz

Is it underfloor that you got or conventional ads and valves? If conventional you just do it as an 'S' plan and duplicate the heating side for each valve/stat combination. Each stat switch wire comes back to the brown valve wire.

 

[StanFitz]

Stanfitz

Is it underfloor that you got or conventional ads and valves? If conventional you just do it as an 'S' plan and duplicate the heating side for each valve/stat combination. Each stat switch wire comes back to the brown valve wire.

My system is all underfloor. I'm old school plumber myself, never touched central heating after CORGI came in. Don't understand these 's' or other plans that are refered to in the forum. This job is my home in Cyprus so no restriction law -wise with LPG. I can get the water to the loops, I need help opening and closing the zone valves!!!!!

 

[ratpig]

TRV's on the individual rads are great and do the job but only when the boiler system has fired and is giving heat. To independently control individual radiators you will need to zone off the flow pipes to each room with 2 port valves. It can be done with a combi but will need some drastic re-piping of the boiler pipework. The underfloor heating manifolds are, in essence just what I have explained.
Possible but IMHO overkill and a lot of pipework.

 

[truckster]

Can you post a picture of what you have got? Will help to tell you which way to go.

 

[StanFitz]

Truckster,was that me you were asking for a drawing? if so I would'nt have a clue how to put a drawing on this forum!!
The installation is 6 loops off '6 port' manifolds with 6 stats and 6 zone valves off a combi. The electrics may be bread and butter for some but I need these 'wired up' so that the appropriate zonevalve opens when the room stat is calling for heat.

 

[truckster]

OK mate

Have you got these? 1




or these? 2



If it's the first (2 port valve) you will need to take a live/neutral/switch wire to the roomstat. The switch wire comes back and connects to the brown of the valve. I'm guessing spring return valve.
Common valve connections

Brown motor live (opens the valve)
Blue neutral
Green/yellow earth
Grey permanent live
Orange Switched boiler feed.

If it's the second more common arrangement you will need a wiring control centre. All the stats return to this and all the actuators are fed from it. There several different makes so you will need the wiring diagram for the one you have.

Wiring diagrams

 

[StanFitz]

Truckster, I have the 1st kind, a 2 port valve with a manual lever. Many thanks for help.

 

[steve44]

thanks