Bleeding the CH Pump Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[whelsy]

When bleeding a Gundfoss pump (Chrome center screw) should the boiler be fired up and the pump running? The pump is fitted in the return pipe underneath a wall hung boiler.
The pump has two speeds which speed is the best to use??

Many Thanks for any advise.
Regards W

[marrtin]

Doesn't really matter, but probably better with the pump on.