Has anyone had any experiance on derating a Grant Vortex Oil Combi?
Heatload for my new house is looking likr 16Kw and the smallest they do is a 21Kw but reading the book of words it can be derated. Seems to be a air disk change, but no mention of nozzle size. Seems odd.
Heatload for my new house is looking likr 16Kw and the smallest they do is a 21Kw but reading the book of words it can be derated. Seems to be a air disk change, but no mention of nozzle size. Seems odd.