Hi all,
I have a grundfos selectric 4 pump and have cleaner in my central heating system at present which i now need to drain.
I am being advised that i need to drain as much as possible and then refill with clean water and run "just the pump" for 20 mins, and then drain and repeat 4 or so times to dilute the contents as i have drop feed radiators that i cannot drain fully.
Can anyone tell me if its possible to run the grundfos selectric 4 without turning the central heating on as i dont seem to be able to.
I have removed the bleed screw to check and the spindle only spins up when the boiler is turned on.
Can anyone confirm please ?
I have a grundfos selectric 4 pump and have cleaner in my central heating system at present which i now need to drain.
I am being advised that i need to drain as much as possible and then refill with clean water and run "just the pump" for 20 mins, and then drain and repeat 4 or so times to dilute the contents as i have drop feed radiators that i cannot drain fully.
Can anyone tell me if its possible to run the grundfos selectric 4 without turning the central heating on as i dont seem to be able to.
I have removed the bleed screw to check and the spindle only spins up when the boiler is turned on.
Can anyone confirm please ?