Recent content by eandwal

so would you not have a normal room thermostat when weather compensation is used because it uses a heating curve and outside temp sensor. It therefore doesn't need to know internal temp and you tweak the curve untill you find a match for your house loses and flow temp that is comfortable...

I've got a Honeywell Sundial "Y" plan system installed with vented cylinder and 12 year old boiler in kitchen. New kitchen extension requires new condensing system boilder and I am looking at a Viessmann 200 with weather compensation and unvented cylinder to loose header and cold water...