This is my first winter of using my new and first condensing boiler - model 18 kW as above. Now I suspect the heating engineer has over sized it a bit to be "on the safe side" as my old Potterton was only 15 kW and fine for my 3 bedroom semi. Generally have the following radiators on - hall double, two in lounge, one a double, small one in study, bathroom. Then two bedrooms, on for just a short time in the evening, spare room off. All TRVs and controlled by the excellent Tado smart thermostat. Insulation average, 60's house.
So I run it on the 'E' setting on the boiler and have my Wilo CH pump on its lowest setting of 6W to minimise electricity cost.
All works extremely well but water in radiators is very hot, almost scalding when on full which is usually only small bursts and return pipes feel very hot as well.
So what's the problem - well none really other than I only seem to only have small reduction in gas useage and wondered if I am running it efficiently like this? Annual consumption with old boiler was 15,000 kWh p.a and we are at home all day. (retired) If 18 kW is overkill can this power be turned down internally, I think I read some can?
So I run it on the 'E' setting on the boiler and have my Wilo CH pump on its lowest setting of 6W to minimise electricity cost.
All works extremely well but water in radiators is very hot, almost scalding when on full which is usually only small bursts and return pipes feel very hot as well.
So what's the problem - well none really other than I only seem to only have small reduction in gas useage and wondered if I am running it efficiently like this? Annual consumption with old boiler was 15,000 kWh p.a and we are at home all day. (retired) If 18 kW is overkill can this power be turned down internally, I think I read some can?