Grundfos Central Heating Pump Plan

[simond]

he Grundfos pump plan saga goes on.
July 2016 Worcester Bosch Greenstar boilers wiring guide shows the pump plan for 2 pump systems on pages 13, 25 and 61 so anyone with a 2 pump system buying one of those boilers will find that Grundfos no longer make the wiring centre. So you end up with a boiler that no one knows how to wire in so that the pump over-run works!
If I'm wrong and someone can tell me - then shall be eternally grateful as have a new Ri 24kw on the wall and can't trigger the over-run without some wiring / relay info!

If you have a Grundfos pump plan, you will still have the wiring centre, because they were supplied together.

If you have a heating system with two Grundfos pumps (far more common) you need an installer who understands electrics. That should be any boiler installer; but the reality is many are combi bashers and bathroom installers who haven't the knowledge...

NB: Warranty is invalid on the boiler with no pump overrrun.

 

[Zedpam]

Thank you

 

[Dan Robinson]

Short but sweet

 

[DP]

Tony Glazer posts on here and will do it for £84.

Not if TT needs carried out

 

[oilboffin]

Pardon me if I sound daft but could you not copy the wiring plan of the new Worcester combi the have the two pump system is the wiring not similar

 

[Dan Robinson]

You need to have something in place for the pump overrun to stop the schitty heat exchanger from imploding on itself. Can think of a couple of ways of doing it.

As you need to open the combustion chamber to do any wiring though we can't be giving this advice on the forum.

 

[oilboffin]

So very true

 

[Zedpam]

Thank you - have been in touch with Tony Glazier of Agile Services and he can do it! Cheers everyone.

 

[Dan Robinson]

£84 ??

 

[picasso]

Do you still have the grundfos wiring centre ? if not I dont think agile is gonna sort you out.

 

[Agile]

It will not be just £84. That is the diagnostic fee in my local area.

This job will require investigating exactly what is fitted and almost certainly will need an ad hoc control interface.

Tony

 

[Razor900]

You're in (gas) safe hands there Zed, Tony is almost certainly in the top 100 gas engineers in this country

 

[ianmcd]

You're in (gas) safe hands there Zed, Tony is almost certainly in the top 100 gas engineers in this country

Tut Tut Razor ben gasser will be along in a minute to give you a row for using that old joke

 

[Zedpam]

Cheers Razor900, at 70+ years old I get plenty of gas jokes from my kids and have gas and to spare from my missus - probably get even more if she sees this!

 

[Dan Robinson]

We're all intrigued to see what Tony will come up with. He has his own thread in the closed forum on this project.