Grundfos pumps

[drtaylor1977]

I have a powermax 155x boiler which has two Grundfos pumps fitted (a central heating pump and a heat exchange pump).

The heat exchange pump needs changing. It is a Grundfos UP 25-50.

What does the UP 25-50 mean?

I only ask as the only replacement pump I can find is a Grundfos UPS 15-50. Will this be ok?

Thanks for any advicve you can give.

Dave

 

[andyg0507]

pulsar direct do these pumps.

 

[drtaylor1977]

Thanks, but again they only have the UPS 15-50 and I need to know if there are any problems with me fitting this in replacement to the UP 25-50 which is currently fitted.

 

[Blackcatgas]

Thanks, but again they only have the UPS 15-50 and I need to know if there are any problems with me fitting this in replacement to the UP 25-50 which is currently fitted.

I Think, and dont quote me on this but this is a special pump wich will modulate down on low voltage, Thats why its £120 as oposed to the £45 one youve seen at B and Q.