wiring 's' plan into eco hometec boiler.

[1oldspindle]

Hello all,
has any plumb or spark ever wired a 's' plan with a Horstman 3 channel programer into a 'eco hometec' condensing combi boiler, and if so how did you go about duffing out the inbuilt programer? I need to know as i have not got an internal wiring diagram for the boiler circuitry.
Many thanks for any help.
Old spindle.

 

[petit_pablo]

Whats an eco hometec and cant the built in timer just be unplugged from the pcb

 

[Agile]

Usually the boilers inbuilt timeclock can be set for 24/7 and the external system wired to take the place of the external thermostat.

Then the switches in the motor valves are wired in series with that circuit.

Tony

 

[RichardBothwell]

I agree with my mate Telly Tony Agile & all the MV's orange wires will be connected to the boiler Sw/live.