I have a large property with over 26 radiators that are all staying. The house is circa 1750 with very poor levels of insulation. The existing rads are totalling around 55kw based on modern rad charts but it is not known whether the rads (fitted around 1995) are dt20 or dt11.
Questions :
Do you size the boiler / boilers to run 55kw of rads or do heat loss calculations and size the boiler based on those losses.
Does anybody know when rads were made to dt20 standard in this country??
When pipe sizing for distribution headers etc theres a big big difference in pipe diameter required for dt20 against dt11's. If rad dt can't be established its possible we could fit wrong sized piping?
thanks
Questions :
Do you size the boiler / boilers to run 55kw of rads or do heat loss calculations and size the boiler based on those losses.
Does anybody know when rads were made to dt20 standard in this country??
When pipe sizing for distribution headers etc theres a big big difference in pipe diameter required for dt20 against dt11's. If rad dt can't be established its possible we could fit wrong sized piping?
thanks