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Step 4Isolating the relay contacts and Wiring
What I did next was to find the relay contact and isolate the mains from the relay contact by cutting away some of the printed circuit board.
as you can see in this picture.
after I had cut away the PCB I checked that there were no connection by using a multimeter set to resistance measurement.
you will have to make sure there is plenty of isolation between the pin and the PCB.
after I had isolated the relay contact pin I attached 2 yellow wires
one to the isolated pin. as shown below. and the other in place of the black wire
these 2 wires will be the switch contact wires for the central heating.
next I got a pieace of mains flex. And removed the white wire from the PCB and wired in the brown wire from the flex.
then I removed the blue wire from the PCB and wire the blue cable from the flex in it's place.
So now I have a mains lead to supley power to the pcb and 2 yellow wire which will connect to my central heating thermostat terminals.
as you can see in this picture.
after I had cut away the PCB I checked that there were no connection by using a multimeter set to resistance measurement.
you will have to make sure there is plenty of isolation between the pin and the PCB.
after I had isolated the relay contact pin I attached 2 yellow wires
one to the isolated pin. as shown below. and the other in place of the black wire
these 2 wires will be the switch contact wires for the central heating.
next I got a pieace of mains flex. And removed the white wire from the PCB and wired in the brown wire from the flex.
then I removed the blue wire from the PCB and wire the blue cable from the flex in it's place.
So now I have a mains lead to supley power to the pcb and 2 yellow wire which will connect to my central heating thermostat terminals.
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