Ideal Minimiser FF80 Problems/Replacement

[mehran]

not to make it any more complex for you but the upper end output is a little misleading . you want a boiler which has the wide modulation range.

for example a boiler that has a max output of 24 kw can can range down to 6kw is better the a 18kw boiler then can only go down to 8kw(figures are made up)

the reason being is your boiler life should spend most of its life in the low to mid range.

so the max output of your boiler is a little bit of a red herring for lossing you efficiency . the only thing is lower output boiler normally have lower min outputs...but not always.

for example viessmann 18 kw & 24 kw heat only boiler have the same min output of 7.3kw

so if your worried 18kw may not be enough or you think you may upgrade or extend the system then going for 24kw with a good modulation range may give you better peace of mind.

the cost between 18kw and 24kw in price is normally not much

 

[D_Hailsham]

I cannot see how the area of wall occupied by a window can exceed the area of the window !

We are talking about a bay window!

Here is a plan view. If you assume the same window height, you will see that the length of a bay window is greater than one flat in the wall.

Untitled

• D_Hailsham
• 4 Jan 2010
• 1