How to replace heating pump

[spiceman]

Untitled

• spiceman
• 12 Nov 2014
• 1

Hi all. Please help if you can. I would like to replace the pump position to vertical when fitting a new one.

I've been round my neighbours who has the same set up only he's pump is in the vertical position and a slight difference in pipe configuration..

On my picture it shows 2 pipes on the back wall going up into the expansion tank. The 22mm hangs over the top and points down into the tank but above water line. The 15 mm goes into the bottom which I take it has water constantly inside the pipe. Then I also have the water feed controlled by stop cock.

On my neighbours these 2 pipes are connected together where they go up the back wall of airing cupboard.

What I don't understand is how does my pump actually pump water around?
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[Dan Robinson]

Why?

 

[spiceman]

Because I thought pumps should be in the vertical position because something to do with air being trapped and it's not good for the pump.

 

[Dan Robinson]

Isolate the valves either side.

Loosen the four Allen bolts.

Rotate the head 90 degrees.

Re-tighten.


Then crack the nuts on the valves and rotate the pump assembly 90 degrees so that the little chrome cap in the middle is horizontal.

Job done.

Panic over.

Pumps should never pump down. Unless they have an integrated AAV.

 

[spiceman]

Thanks Dan for your help.

By turning the head 90 degrees what does that achieve?
Should I join the 15mm to the 22mm at the back wall like my neighbours?

I know my heating works but I can't see how water goes into feed the pump and then why it doesn't continue all the way up and the overflow into the top of expansion tank. Thank you.

 

[Dan Robinson]

You don't want the electrical box of the pump underneath when the body is turned.


Pumps are not pumps.


They are circulators.

Joining the 15 into the 22 wouldn't be a bas thing.

 

[leakydave]

on the flow pipe from the boiler....

Vent
Feed
Pump
3-Port Valve