opentherm

Hi All, I'm looking to wire up our Ecotec 937 plus with Opentherm and Evohome. So far I can source the VR33 module and have located the X31 interface on the PCB where this should be plugged in. Unfortunately it appears to have another connection already plugged into this serving the shift load...

Hi All, Glad to join the forum, so many experts here, well done all. Month ago I have replaced my boiler with Baxi 630 Combi (believe this is a fully Opentherm compatible boiler?), and connected with Nest 3rd generation thermostat. Installer was great, but not good with the new technology, but...

Hi, I have an Ideal Vogue C32 sited in the garage, with a iFlo Digistat +2 programmer and thermostat which lives in the hallway. I initially bought a Hive, and returned it and picked up a Nest instead because of its OpenTherm support. Can someone shed some light on the wiring, as well as...

Hi all, I connected my Nest to my combi boiler (Viessman Vitodens 100) using OpenTherm. I navigated through the settings menu and I moved from On/Off to OpenTherm. Thermostat also asks for parameter about water temperature. What do you normally choose? Moreover, accessing to my Nest using...

I'm in the process of upgrading the controls of my heating system. (Unvented S plan with 2 heating zones) So far I have swapped the old fashioned room stat for a nest/heat link to control the zone valve for the upstairs zone which is a trad radiator system. That all works BRILLIANTLY! So the...

Hi I have an opentherm compatible boiler and controller / room stat. Question is when setting up the stat I am prompted to enter max flow temperature for CH. (this can also be done directly on the boiler ) Boiler is capable to going up 80c I set it to 70c with the following thinking 1) my...

Hi all :) I've just bought a NEST 3rd gen, and would like to use OpenTherm. The Nest 'doc' has me just using the OT terminals to control the boiler, but i've also read that it's a standard wiring (i'll replace the programmer) PLUS the OT. Does anyone have any experience with this? I've...

Hi Everyone, I've been searching online and came across this website which seemed to have knowledgeable contributors so thought I'd join to ask some questions about a planned new central heating system. Apologies for the long post whilst I set the scene. My house consists of a lounge, a...

Hey all. I've been researching "smart" room stats and TRVs for my new Vaillant ecotec plus 835 boiler. The boiler is a brand new ERP compliant boiler. I've come across two products that appeal to me. Tado & Evohome. Both (Tado coming soon) offer "Smart" zoning using replacement TRVs without...

Hi guys - Hoping someone can help. I am having some building work kicking off in January, and with it is a Valliant EcoTec Openvent 38kw boiler (excited!) - there will be two zones, one for the underfloor heating in the kitchen, then the other for the remainder of the house's radiators...