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i want to add one more radiator?

i have got ravenheat boiler type rsf 820/20(combi) i already got 8 radiators,can i add one more radiator,will my boiler take it.
steve, January 2009
My boiler has a heat output of 23.5kW and drives 17 radiators.

Your boiler has a heat output of 23.6kW

According to this database...
http://www.homeheatingguide.co.uk/efficiency-tables.php

My guess is yes...

Peccavi, January 2009
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