Opentherm - Glow worm boiler

[rodders]

Been trying to read up online, can't tell if it's possible or not, I think there maybe a card that will work, as by standard the boiler is edbus.

Has anyone managed to get opentherm working on their glow worm boiler?

My other option is to fit the external temp sensor, but means running a wire up into loft and out the soffit.

 

[Dangerous Dave]

Glow Worm is owned by Vaillant and share a lot of the same electronics, likely the Vaillant VR33 which allows OpenTherm to run the boiler would work in it. Would need the PCB model number cross checked against a Vaillant to confirm it works.

 

[rodders]

0020036768 board might be what I need, but can't get 100% confirmation.
Seems Netherlands has it all over there, not hit off too much here.

 

[-Ad-]

Been trying to read up online, can't tell if it's possible or not, I think there maybe a card that will work, as by standard the boiler is edbus.

Has anyone managed to get opentherm working on their glow worm boiler?

My other option is to fit the external temp sensor, but means running a wire up into loft and out the soffit.

What model do you have and is it a system/heat only boiler rather than a combi?

I added the external wireless WC sensor last year (to our HX 32kW) and it has been awesome in reducing gas usage and allowing the boiler to modulate well.

It works via wireless but I do have the Smart wiring centre with the radio receiver that communicates to the Climapro 2.

 

[rodders]

Glow worm 30cx, can't use the wireless one, as has to talk climapro, like you have, but can use the wired one, though I can't find any info on how to set the temp curve to follow, for my boiler model.