Hi all
Having some renovations done on ground floor and looking to get rid of / replace some of the older looking boilers on that floor (mainly Double panel, double convector, some double panel single convector.
As well as replacing these I wanted to add a couple radiators too, but have become a bit confused about the delta calculations I should be using to stay under the total KW of the boiler limit.
Ours is a Worcester Bosch 40 CDI Greenstar Conventional Central Heating Only Convecting boiler (41KW), and it powers 23 rads through the property, plus an unvented hot water cylinder.
I run the boiler on max usually, with a flow temp of around 84c, so assume this means Im T60?... So should be using this when calculating the output for any newer boilers?
Also as this is a condensing boiler with 90% efficiency, is it possible for me to run it at T50 or lower so I can make it more efficient? I've read online I can't drop the flow temp too much as the hot water tank needs to stay above 60c to avoid legionnaire's disease etc. With that in mind do I have any other options where I can make this setup more efficient? As stated above ideally id like to add more rads.
thanks
Ged
Having some renovations done on ground floor and looking to get rid of / replace some of the older looking boilers on that floor (mainly Double panel, double convector, some double panel single convector.
As well as replacing these I wanted to add a couple radiators too, but have become a bit confused about the delta calculations I should be using to stay under the total KW of the boiler limit.
Ours is a Worcester Bosch 40 CDI Greenstar Conventional Central Heating Only Convecting boiler (41KW), and it powers 23 rads through the property, plus an unvented hot water cylinder.
I run the boiler on max usually, with a flow temp of around 84c, so assume this means Im T60?... So should be using this when calculating the output for any newer boilers?
Also as this is a condensing boiler with 90% efficiency, is it possible for me to run it at T50 or lower so I can make it more efficient? I've read online I can't drop the flow temp too much as the hot water tank needs to stay above 60c to avoid legionnaire's disease etc. With that in mind do I have any other options where I can make this setup more efficient? As stated above ideally id like to add more rads.
thanks
Ged