Hello I have a secure 302 channel wireless receiver connected to my boiler it just fitted over the standard backplate when I removed the old programmer some years ago, it is paired with a wireless thermostat, I think I linked two connections together in the central heating wiring centre when I replaced the old wired thermostat but can't remember which ones, so everything work ok at the moment but I want to replace the thermostat and receiver with a Nest to control Heating And HW
This is from the receiver manual -
This is what I have when I remove the old receiver above
So if I move the L N Wires to the correct L N on the heatlink and link L to 2 and 5
No 4 above is Heating and No3 HW
So yellow no3 above goes to no6 and blue no4 goes to no3 is this correct?
I want the Nest to connect via Wireless to the heatlink is there anything I am missing here
Your diagram is correct, however I think you will find the terminals in the nest thermostat are too small to wire direct. [attachment=0]upper_wiring_centre_plus_heatlink.jpg[/attachment] when I did it I put a wiring centre next to Nest so I had some where to sort out wires.
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