VR66/VRT 350 --> VR66/VSmart

[tgeorgeson]

Setup: Vaillant EcoTec 637 with 2 Honeywell Valves (one for cylinder / one for CH) into the VR66 and Boiler/VR66/Controller connected via eBus.

I recently tried to swap out a VRT350 with a VSmart. The VR66 was wired for a single zone, and the VRT350 switched a Honeywell Valve on the CH flow. The VSmart doesn't seem to open the CH valve switch (on a relay) when there's a CH demand.

I've disconnected the valve and left it open (it's not really needed anyway) - and moved the VR66 board dial from 0 to 1 (multi/monozone). This doesn't cause a great problem, but I was curious as to why the VSmart wasn't able to perform the open of the valve?

 

[ShaunCorbs]

@tolly

 

[Chalked]

V smart will only do one zone

 

[tgeorgeson]

I understand that. But say I switched to use two zones each on their own controller - I'd still be left with the problem of the vSmart being unable to open the valve.

I just find it odd that a vSmart would never be able to be used in multizone and yet they sell it packaged with a VR66 (a multizone control box).