Grundfos pump horizontal or vertical?

[spiceman]

I have this make of pump on my heating system which has been installed horizontal for about 5 years, its been working fine.

However I was told by a friend it shouldv'e been installed vertically. Does it really matter?

Thanks

 

[sloppytom]

i put then vertical, but can go horizontal as long as it points downward slightly to stop air seizing it

 

[crashndie]

as the man above says just dip the head a bit

 

[Nige F]

"where pumps can only be installed in horizontal pipework, it is imperative that the pump shaft is horizontal or slightly ***Higher @ The Vent Plug End "*** Grundfos installation instructions . So what do you dip

 

[crashndie]

i personaly lean the head just off center so the back of the bleed nut is higher, thats just though personal experiance. its easyer to bleed it up coz theres a corner at a higher point.