Which instructions have you followed? There’s 2 diagrams there.the oil boiler only fires for CH when HW is on if you go by the instructions for new programmer
It looks like the LP522 has a gravity mode option on the rear...New programmer is Drayton LP522 I believe
Please let us know if it works!Ok excellent thank you so much I appreciate the help from you and everyone else
I’ll update if I need anymore help lol
Yes, there is - which connects to C/H N/O.There seems to be a connection to DHW N/C
as earlier, you will need to confirm your existing wiring looks something like...
Ummm, try looking at the Nest image you posted!But no variant seems to use the N/C contact
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