I have a British Gas 330 boiler with a Grundfos Alpha 2 15-60 130 pump, 15 rads plus vented cylinder.
Trying to figure out the correct pump setting, the manual says recommended mode is Auto Adapt but this only runs around 6W and doesn't seem to give enough flow (does Auto Adapt actually work?).
Alternative recommended modes are PP1 or PP2, in PP2 it runs about 11W which would seem to give a flow of around 900 l/h from the graph? AFAIK boiler is set to default 18kW and needs min flow of 774 l/h
What should it be set to?
Trying to figure out the correct pump setting, the manual says recommended mode is Auto Adapt but this only runs around 6W and doesn't seem to give enough flow (does Auto Adapt actually work?).
Alternative recommended modes are PP1 or PP2, in PP2 it runs about 11W which would seem to give a flow of around 900 l/h from the graph? AFAIK boiler is set to default 18kW and needs min flow of 774 l/h
What should it be set to?