VR65/VR66 for HW flow temp control

[fezster]

I have an ecotec plus 438 boiler and I use the SL for both heating zones and DHW.

If I remember correctly, for ebus to fire the boiler you needed to leave the boiler terminals 3+4 bridged (I dont have it bridged and the boiler only fires on the SL).

 

[bwel]

I have an ecotec plus 438 boiler and I use the SL for both heating zones and DHW.

If I remember correctly, for ebus to fire the boiler you needed to leave the boiler terminals 3+4 bridged (I dont have it bridged and the boiler only fires on the SL).

Aha. Many thanks.
Based on how I have it wired now, The DHW fires up with the right hand CYL terminal of the VR65 terminal and No connection from the Nest to the Boiler Switched Live RT (3, 4)