Vaillant Ecotec Plus 637 with Honeywell controls

[madd1973]

Hi I am currently wiring the above boiler but am not familiar with the Vaillant internal connections for wiring in the programmer. I will try to explain -

Y plan system

Fused spur 3am to boiler - done


I am planning on using the two connections next to the boiler supply (brown plug marked RT) as the switched live and neutral supply to the Honeywell ST9000 controller

Other Honeywell contols (Cylinder Stat, Room Stat, Mid position valve)wired in as per HW instructions.

Is this correct?

Many thanks

Alex

 

[ALEC1]

is this the new ecotec?


much easier to use vaillants controls...

 

[madd1973]

Hi, Yes this is a new ecotec one.

Cheers