Grundfos Pump Wiring

[Philayl]

Hi, I am going to change my Present Grundfos UPS 15-50 pump to the Grundfos Alpha L2 15-50 pump, I have query regarding the wiring, is the pump wired to any of the heating controls or just to the mains, my intention was to just put a 13 amp plug on the lead and plug it into a standard 13 amp switched socket. I then thought how does it know when to "kick in" if it isn't connected to the CH controller or boiler in some way, can anyone clear this up for me please? Phil

 

[rochdalegas]

Just undo wires at the pump head and wire like for like there is only l n e youre overcomplicating it.

 

[ianmcd]

No you will have to use the existing wiring

 

[Philayl]

Thanks for the replies, the old pump is wired directly but the new one has a plug that goes into the pump head so it's not possible to wire like for like. Phil

 

[Wildcat1961]

Thanks for the replies, the old pump is wired directly but the new one has a plug that goes into the pump head so it's not possible to wire like for like. Phil

It is possible to wire like for like.
Remove cores from existing pump and wire directly into supplied plug.
If you're struggling with this simple task I suggest calling someone who knows what they are doing.

 

[ianmcd]

it is possible and if you cant work out how to do it you should get someone in, a weekly task for lots of us

 

[gasmanstu72]

there's instructions that come with the pump, i think they're in pictures to make it even easier. If you're struggling to understand them then you really need to get someone in
it really is as easy as wiring a plug, if not easier

 

[FiremanT]

FFS call someone before you hurt yourself.

And/or someone else

 

[Doggit]

Remove cores from existing pump and wire directly into supplied plug

Uh no, cut the plug off, and put then wire like for like. But it does beg the question of if the OP has the right pump.

Philayl, if the pump was just wired to the mains via the plug, then there'd be no control over when it works, so it has to be wired back in the same way that the exiting one is.

As others have suggested, best to get someone else in before you blow something - and then have a bigger bill to sort that out.

 

[Dan Robinson]

Uh no, cut the plug off, and put then wire like for like. But it does beg the question of if the OP has the right pump.

Philayl, if the pump was just wired to the mains via the plug, then there'd be no control over when it works, so it has to be wired back in the same way that the exiting one is.

As others have suggested, best to get someone else in before you blow something - and then have a bigger bill to sort that out.

Guess you've not been fitting pumps in the last few years

 

[Doggit]

Nope, guess I got it wrong then. Oh well, I'll live with embarrasment. On the other hand, dumber than a 9 year old, maybe I won't.

 

[Dan Robinson]

There's more than one kind of plug.

 

[Doggit]

Ah, thanks for that Dan. Just re-read it, and spotted where I've got confused.

Time for bed said Zebedy.

 

[Wildcat1961]

Guess you've not been fitting pumps in the last few years

Anyone in the trade doing this job day in and day out would know exactly what type of plug was being referred too.

 

[dilalio]