The cylinder stat normally has three terminals (sometimes plus earth) labelled C, 1 and 2. Though they may be labelled differently.If I have 3 conductors on the boiler thermostat (and an earth)
C is the one connected to Programmer HW ON;
1 is the one connected to boiler ON and Valve Orange wire;
2 is the one connected to Programmer HW OFF and Valve Grey wire.
You probably have just C and 1 connected at the moment. So you will have to connect 2 to the Valve Grey wire.
You also have to connect Programmer HW OFF to the valve Grey wire. So there are three wires connected together: HW OFF, Valve Grey and Cylinder Stat 2.
Yeswould this then mean that I have to change the timer to P (pumped).
Yes. The LP522 has completely separate timing for the heating and hot water channels.Would this also mean that if I put CH on, the HW will not automatically come on ?