pump orientation

[iep]

I have been advised to move the pump from the return to the flow side of our boiler (after feed vent connections) to solve pump over issues at the F&E tank (and to meet manufacturers gudelines for our boiler).

Currently, the pump sits directly below the boiler and pumps water upwards from the pipework that runs beneath the floor up to the 'return' connection of the boiler.

In order to move it to the flow side of the boiler it will have to be installed upside down in order to pump the water downwards and away from the boiler.

The grundfos manual suggests that the pump should only be installed so that it pumps upwards but this is impractical in our house.

Is this a real issue for grundfos pumps. Have people seen issues when these pumps are used to pump 'downwards'?

Cheers,

iep

 

[matt1e]

pumping downwards is acceptable provided an effective air vent is incorporated in the system, before the pump so yes it can point down( not preferable though)
also it might not be a simple case of moving the pump to the flow side of the boiler you will have to take into consideration where the feed and vent pipe are connected into the system, they will have to be before the pump

 

[iep]

Hi, thanks for the advice. Once moved, the pump will sit directly between the vent and the bypass valve s oall should be well (just after the vent, just before the bypass).

So, all should be well.

Cheers,

iep

 

[onlyfitidealboilers]

you still going on about this!!

 

[YELLERBELLY]

Hi, thanks for the advice. Once moved, the pump will sit directly between the vent and the bypass valve s oall should be well (just after the vent, just before the bypass).

So, all should be well.

Cheers,

iep

make sure the cold feed is after the vent before the pump

 

[iep]

Thanks guys.

Hi Idealboilers. Yes, still trying to get this job finished Just want to make sure I don't destroy the pump when it goes in.

Feels like I have two jobs these days, my normal 9-5 and part time (albeit very slow) plumber at the weekends. Still, reckon we are getting close now.

Cheers,

iep

 

[joe-90]

you still going on about this!!

 

[Agile]

How does that post by Joe benefit anyone?

Is he a refugee from Screwfix or something?