I've searched the forums for an hour - not found anything specific on this question.
Question 1- can we remove the UFH Mixer - and just set the Boiler Flow to 45deg?
Background (and see diagram)
I'm Helping our village hall, 14 year old UFH heating - the gas boiler just packed up - getting a new 35-40Kw balanced flue eg Viessmans, vallaint
Low Loss Header - between the boiler and the rest
Pumps - the UFH has a chunky one -after the Mixer
Q2) Would 'no-mixer' reduce the boiler efficiency? - given it's deltaT will be ~ 7-10 deg - (not the usual 20 that people talk about with rad systems).
* the 7-10 degree value comes from a @John.g post I saw while
Condensing efficiency is higher - many people say - at lower temps - so that is not an issue.
Q3) Would the boiler simply run for 'longer bursts' with shorter gaps - without the mixer?
PS
In 5-10 years - maybe they will move to HeatPumps... so a Mixer will definitely not be needed then..
Question 1- can we remove the UFH Mixer - and just set the Boiler Flow to 45deg?
Background (and see diagram)
I'm Helping our village hall, 14 year old UFH heating - the gas boiler just packed up - getting a new 35-40Kw balanced flue eg Viessmans, vallaint
Low Loss Header - between the boiler and the rest
Pumps - the UFH has a chunky one -after the Mixer
- No pumps at the manifolds.
- no mixers at the manifolds, just actuators
Q2) Would 'no-mixer' reduce the boiler efficiency? - given it's deltaT will be ~ 7-10 deg - (not the usual 20 that people talk about with rad systems).
* the 7-10 degree value comes from a @John.g post I saw while
Condensing efficiency is higher - many people say - at lower temps - so that is not an issue.
Q3) Would the boiler simply run for 'longer bursts' with shorter gaps - without the mixer?
PS
In 5-10 years - maybe they will move to HeatPumps... so a Mixer will definitely not be needed then..