Viessmann Vitodens 200 Programme Unit

[collins3248]

Just bought a 3 year old refurbished Vitodens but the removable programmer got broken during transit. Looking at the spare parts list, there are 3 different programming units, a weather compensated unit, a constant temp unit and a Comfortrol unit. My current set up is an S plan using Honeywell programmer and 3 motorised zone valves. Plumber seems to think that the boiler can be wired in to my existing setup without the need for the viessmann unit, looking at the Viessmann website it all gets confusing as they have Vitronic and Vitorol controllers but doesn't give compatability details. Has any one got any experience on this so I can select the right unit if I need one at all.
Thanks

 

[simond]

Where did you buy a refurbished unit. I can't imagine what they 'refurbish'. Quick wipe over with a duster I expect.

Your plumber is wrong - the boiler won't work without a plug in facia controller. You will need the constant temp controller.

If the boiler originally had something other than the constant temp controller and you plug one in, it will not work without a ridiculous set of prog instructions, not in the bl@@dy manual.