You don't say whether you want the new programmer to control both the hot water and the heating. It is not clear which of the two diagrams that appear on your photograph for the programmer refers to the switch you have bought. The first is a single channel on/off timer whereas the second is a two channel (hot water AND heating) controller.
The wiring is quite simple once this has been established.
I DO want to control both hot water and central heating
when I bought the programmer although it is a central heating and hot water one, the instructions that actually came with it were for the lower model which is only single channel.
I found the proper manual on the web which is where the image I have posted comes from but this manual I think covers both the single and dual channel model which is why there are 2 diagrams.
but basically the programmer I have has the connections as per the second wiring diagram headed "wiring the programmer", the "wiring the time switch" diagram i think must be for single channel controllers.
If this is the case how do I wire my 4 wires from the boiler to the 6 connectors on the programmer.
Remove the link wire between pins 2,3 and 4 on the boiler connector block as shown on the diagram.
Join the neutral from the boiler to neutral on the timer.
Connect pin 2 (Live supply to programmer) to the live pin on the Drayton.
Link pin 3 (Switched Hot water) to pin 3 (HW) on the programmer.
Link pin 4 (Switched C/H) to pin 4 on the programmer.
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