Replacement pump recommendation

[jfb]

Can anyone recommend a suitable pump replacement for this one?

 

well, I’m assuming it’s the pump as the boiler is working but the heat never gets far from the boiler at all and the pump is making non standard noises!

[Nickfromwales]

Gravity system with a heat only boiler?

 

I'm less of a fan of Grundfos these days, and am steering towards Wilo more often. The 5 means 5m head, so most off the shelf standard circulators will do the job.

 

This one may suit your needs and should be available locally LINK

 

Hopefully the pump valves will hold well enough for a deft switch over, but expect them to not close fully.

[John Carroll]

Open & shut the pump isolating valves 3 or 4 times, should then hold OK.

 

I have a 6M Wilo Yonos Pico Pump, running fine and silent for the past 7 years.

[ProDave]

48 minutes ago, Nickfromwales said:

Gravity system with a heat only boiler?

First check the header tank is not dry.

[jfb]

32 minutes ago, Nickfromwales said:

Gravity system with a heat only boiler?

Thanks for the quick response Nick. I’m not a plumbing expert but I think it’s a gravity system!

The boiler does heating and feeds the hot water tank and there are a couple of tanks in the loft.

 

im a bit worried about how well the isolators will work as I know there’s already an old isolator in the hot water cupboard that doesn’t turn!

So im a little reluctant to have a go myself in case I can’t get the new one to fit properly. But it would be cheaper than getting someone in to do it!

[jfb]

11 minutes ago, ProDave said:

First check the header tank is not dry.

Just seen this. Ok I will do. Does that still influence whether the boiler will work for the heating if there is no call for hot water?