Wiring diagram

[plcanonica]

Hi,
I have a central heating/hot water system which is misbehaving. It has the following components:
1 potterton boiler
1 potterton timer switch with controls for hot water and for CH
3 Honeywell zone valves controllong HW, half the house's CH, the other half's CH
1 HW cylynder thermostat and 2 room thermostats (1 for each half of the house).
Pump
Does anyone know where I can find a wiring diagram for a system like this?
In hope,

Paolo.

 

[doitall]

Honeywell S plan plus would be a good start, an Heating or electrician that understands boiler wiring, may be better

 

[stem]

Here's a sketch for you. The pump is connected either across the boiler terminals (if the boiler doesn't require a pump "run on") or to special terminals in the boiler that keep the pump running for a while when the boiler goes off. The additional permanent live shown dotted is needed in the second instance. The wires to the motorised valve contacts that turn the boiler "on" are coloured Orange (as shown) and Grey. The actual routing of the cables and locations of the various components will be unique to your home of course and the choices of the installer.

Note: The earth connections are omitted from the diagram for clarity, but must be made in reality.

Untitled

• stem
• 10 Sep 2012
• 1