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opentherm

  1. G

    Competent heating installer wanted in West Yorkshire

    I am urgently in need of a new boiler install in Huddersfield. My plan was to go with twin Opentherm boilers around 30KW each System is a very large listed home with currently a failed Potterton Eurocondense EC 65 KW, evoHome and pressurised water cylinder. Fan has died and is discontinued. If...
  2. M

    Switching to OpenTherm with Ideal Vogue Max 40

    Hi I have a normal on/off thermostat connected to my Ideal Vogue Max 40 and have been looking through the installation manual (here) to see how to connect an Opentherm stat. The instructions say "The link wire on the 230V installer room stat/timer connection gives a demand in conjunction with...
  3. L

    Vaillant boiler - what do the buttons do, controlling the boiler, and opentherm

    Hi, I've got a "Vaillant ecotec pro 28 VUW GB 286/3-3", I think it's around 10+ years old or so. I don't have a user manual, and I can't find one for this model online on any of the "manual websites" on the internet. The control panel looks like this - see the attached picture. What do those...
  4. C

    NEST + OpenTherm/eBUS interface

    Hi there folks! I'm wondering to buy the eBUS/OpenTherm Interface to allow my Saunier Duval boiler (Bulex, Valliant,...) to modulate with Nest Thermostat v3. As much of you can guess, my boiler is not compatible with OpenTherm but eBUS.... 😖 So I have many options: Buy another boiler....(💸)...
  5. J

    Vaillant Boilers, Nest and Opentherm

    Good evening you marvellous lot! So, i have a client that wants the Vaillant pure combi boiler (my go to rear flued boiler), with a Nest controller. As far as I can tell, there is no easy way of making these 2 work easily together. The only way I can find is to use the following thingy...
  6. J

    Boiler Plus - Smart Controls & OpenTherm

    Good evening All, I have come accross a situation and I would like some opinions. I am installling a combi boiler in a property with.......no internet! My usual MO has been to fit a combi and Nest combo to keep homeowners and the law happy. Specifically Ideal Vogue Max Combi using the...
  7. D

    Complicated? Opentherm or on/off

    Sorry to trouble you but I wondered if one of you genius out there could help with some technical advice? I have a Vokrea i36 Utica (of which I am very pleased it’s a nice piece of kit). It is classed as an opentherm boiler. Additionally it modulates on a 10.1 ratio. Now. I have it wired to...
  8. 1

    Help! Nest - Dual zone - Opentherm!

    Afternoon all After getting to a point where i am almost ready for my new boiler system to be fitted. I am going for either a Viessmann or unvented but i think swaying towards the unvented due to hot water contingency if the boiler goes down (too many stories of people waiting days for parts...
  9. P

    OpenTherm on y-plan

    Hi, I've just had a Ideal Logic + 15 H installed. I was wondering how an OpenTherm thermostat would tie in with programmer and how would I replace the current thermostat (link it out on the terminals?) Also, does the boiler know when its heating for hot-water or for the rads? It appears to be...
  10. J

    Auto air vent placement

    If anyone can give me pointers I'd be most grateful. I have flow and return coming in at the floor level in one corner of a room that rises to ceiling level runs around three walls and drops to the ufh manifold. It is drained at the moment but when I refill Id like to have done the most I can...
  11. D

    Viessmann 100-W Vitodens with weather comp and opentherm query?

    Hi all, As you probably can tell i don't come on here much but I've come across a couple of teething problems with my new system which i have only just installed. OK here is my set up: Viessmann 100 -W WB1C 19kw system boiler utilizing the 4 pipe system Viessmann unvented cylinder connected to...
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