Hi All.
Having browsed this forum for a few hours, I'm being tempted to spend some money to improve my heating.
I always thought Evohome was about having individual TRVs on each radiator, but it seems Evohome paired with Opentherm can allow smart controls to be used on a regular S Plan Plus heating system, and gain efficiency by controlling flow temperatures (in my case, on a Vaillant 438, by adding a VR33 controller).
Ideally, I'd have HR92's on all of my radiators, but with 25 radiators in total, it's going to cost a small fortune. So I wanted to know if anybody started off with a system without the HR92's and if so what the recommendations are on the controls to purchase. Requirements are:
1. Have thermostats on 2 CH zones with radiators, which can adjust temperatures at various times of the day automatically (and weekday/weekend adjustments)
2. Control boiler flow temps based on the internal temperature (and ideally, with weather compensation too).
3. Have hot water priority to boost the flow temp to an unvented cylinder (if necessary, by using a separate sensor in the cylinders dry pocket).
And finally - is there any benefit to using HR92's on only some radiators and adding more as funds permit? Or is it an all or nothing affair?
Thanks!
Having browsed this forum for a few hours, I'm being tempted to spend some money to improve my heating.
I always thought Evohome was about having individual TRVs on each radiator, but it seems Evohome paired with Opentherm can allow smart controls to be used on a regular S Plan Plus heating system, and gain efficiency by controlling flow temperatures (in my case, on a Vaillant 438, by adding a VR33 controller).
Ideally, I'd have HR92's on all of my radiators, but with 25 radiators in total, it's going to cost a small fortune. So I wanted to know if anybody started off with a system without the HR92's and if so what the recommendations are on the controls to purchase. Requirements are:
1. Have thermostats on 2 CH zones with radiators, which can adjust temperatures at various times of the day automatically (and weekday/weekend adjustments)
2. Control boiler flow temps based on the internal temperature (and ideally, with weather compensation too).
3. Have hot water priority to boost the flow temp to an unvented cylinder (if necessary, by using a separate sensor in the cylinders dry pocket).
And finally - is there any benefit to using HR92's on only some radiators and adding more as funds permit? Or is it an all or nothing affair?
Thanks!
Comment