New pump, loud bubbling in loft!

[Ytaff]

Hi,

You'll have to excuse me, I'm not very good at plumbing! Basically, I have moved into a property (first time with central heating) and the pump had to be replaced almost straight away. Ever since then, when the boiler downstairs goes off the vent pipe (I'm assuming) going up to the feed/expansion tanks dumps, quite violently water back into the tank. The pipes then creek and it stops. Until the next time.

Really hope someone can help.

Thanks in advance

Ytaff

 

[IDCHAPPY]

What setting is the new pump on?

 

[Ytaff]

What setting is the new pump on?

I've just put it down to PP1? Lowest proportional pressure? It's a grundfoss alpha 2.

 

[Ray Stafford]

As ^^^

The new pump is probably on too high a setting.

 

[Howsie]

Or the vent pipe isn't at the right height.

 

[Ytaff]

I've turned it down now and turned the boiler down. Seems to have stopped for now. Thanks for replies... It's much appreciated.