Any one know if there is an average return temperature for getting the optimum efficiency out of a Condensing Boiler please or does each manufacturer have their own target?
The more you "oversize" the rads, the more the boiler will be able to operate in condensing mode.pf-mills said:How do you decide how much to oversize the rads to get a reasonable balance between effy and cost Do you just estimate 10% or can it be easily worked out. Pointer please...thanks
True in principle, but there is a complication, if one of the duties of the boiler is to heat the hot water (DHW) cylinder.Agile said:the lower the better
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