Hi
I am looking for some help with deciding what size of boiler to buy; all comments and suggestions most gratefully received.
I currently have a 19 year old Trianco Eurostar 70-90 (26.4kW) in an outbuilding that needs replacing.
Has to be oil.
Looking at the Grant range (local maintenenance available).
A question is should I go for a 21-26kW one or a 26-35kW model?
Current boiler has proved to be adequate and no house extensions are possible.
But the Grant ones are condensing so is a little bigger better or should it be the smaller one?
Current setup in outbuilding with boiler, 3 seperate pumped circuits (Living, bedrooms, DHW), all rads on 8 or 10mm microbore drops from manifolds in ceiling space (bungalow), not a sealed system.
Heating calcs give figures in 22 to 27kW load allowing for losses.
Recommendations for either utility range or pro range?
Differences seem to be cost and pro just a little more efficient.
Finally the system has never been flushed. All rads are steel.
Planning to flush before fitting new boiler or is it better after boiler exchange?
Any thoughts on best way to flush the drop loops to the rads (no drainage points at rads)
Thanks very much for taking the time to read this, and once again all comments most gratefully received.
I am looking for some help with deciding what size of boiler to buy; all comments and suggestions most gratefully received.
I currently have a 19 year old Trianco Eurostar 70-90 (26.4kW) in an outbuilding that needs replacing.
Has to be oil.
Looking at the Grant range (local maintenenance available).
A question is should I go for a 21-26kW one or a 26-35kW model?
Current boiler has proved to be adequate and no house extensions are possible.
But the Grant ones are condensing so is a little bigger better or should it be the smaller one?
Current setup in outbuilding with boiler, 3 seperate pumped circuits (Living, bedrooms, DHW), all rads on 8 or 10mm microbore drops from manifolds in ceiling space (bungalow), not a sealed system.
Heating calcs give figures in 22 to 27kW load allowing for losses.
Recommendations for either utility range or pro range?
Differences seem to be cost and pro just a little more efficient.
Finally the system has never been flushed. All rads are steel.
Planning to flush before fitting new boiler or is it better after boiler exchange?
Any thoughts on best way to flush the drop loops to the rads (no drainage points at rads)
Thanks very much for taking the time to read this, and once again all comments most gratefully received.