Circulation Pump gone - question about replacement

doubledown

Hi all,

Long story short - no heat going to radiators upstairs or downstairs. Boiler is fine but we narrowed it down the the circulation pump in the hot press. There is usually a green light flashing but now nothing.

Plumber came and had a look and agreed with the diagnosis but said out pipes and the pump were an odd size and said we'd have to order a replacement before he could do anything. But the original seems impossible to get anywhere now so I'm just unsure if the replacement I'm looking for is the right spec. I want to be sure before I order it. Over a week with no heating now.

The original - IMPPUMP SAN 15/60-130

504 Gateway Timeout: remote server did not respond to the proxy (pumps.si)

What I'm looking at to replace it -

Grundfos Alpha 1 15-50/60 Domestic Heating Circulator 230V - Screwfix

Thanks in advance.

(apologies, the IMPPUMP link doesn't appear to be working now for some reason)

hydrus21

https://www.boards.ie/discussion/2058334995/circulation-pump-gone-question-about-replacement

Important to get like for like on the valve gap otherwise pipework will have to be altered. That could be costly.

If your gap is 130mm then that Grundfos in the link will fit.

embracingLife

That sounds odd thing for the plumber to say. What exactly size of the pipe did he say? Costly to replace? What did he say involves to replace the pipes?

Sounds Booosh1t. It's straight forward to sort this.

Also op it's not necessary to replace the pump with the exact one, there's lots of brands of pumps and they all do the same thing just get the same rated etc.

Is the pump completely dead?

Also another way to rectify this is to remove the motor part from body of the pump and screw on the motor part of a new one onto. (the motor part of a pump is called the head). All circulation pumps have 2/3/4 bolts on the front of the pump which hold the motor part to the body. In awkward circumstances it's as handy to keep the body of the original pump in place, remove the motor part and replace with a new motor from a new pump. You buy a new pump and separate it.

Although the awkward part is to make sure the rubber seal fits properly when swooping the new pump head.

Surely the plumber could have suggested this? He sounds harmless that he left you with this and didn't rectify it for you with no heat! Mind boggling.

doubledown

https://www.boards.ie/discussion/comment/121735499#Comment_121735499

I believe it is, thank you.

doubledown

https://www.boards.ie/discussion/comment/121738633#Comment_121738633

It was a very odd experience. He said that the pipe fittings were an unusual size and we had to either get a new pump (or one of similar size and spec) or he'd have to rework it, which would cost a lot. We couldn't find that exact pump online but I did send him links to see if other possibilities would suffice but he never responded. I didn't want to go down the route of ordering the wrong spec pump and wasting more time.

It is my belief that the pump is simply jammed as you can hear it humming and trying to do something when the heating is turned on but when I suggested opening it and having a look he said there was no point.

It was baffling. This was a company I have used to do my annual boiler service for many years but after over a week of waiting he spent 10 minutes in the house and couldn't get out of there fast enough. I told them I was unhappy with the visit and they suggested trying another company!!! I will never use them again.

I have someone else who was recommended to me (finally) coming to take a look tomorrow and the first port of call will be ascertaining if the pump is simply jammed or broken and we'll take it from there.

halkar

According to specs at https://imp-pumps.com/pumps/san/ your pump has 1" BSP connection. The one from Screwfix is 1 1/2" BSP. If possible try measuring connections. Sometimes pump head can be mixed with the casing. Maybe that's why plumber said it needs work on pipes. It's difficult to get 1" BSP pumps. To replace your pump without pipe work you will need pump with 130 length and 1" BSP based on the specs from site.

embracingLife

He didn't give a toss about you

doubledown

https://www.boards.ie/discussion/comment/121739085#Comment_121739085

Yes, that was a concern. But the plumber bombarded us with numbers, sizes and specs and then left. Hence us not knowing what pump we were looking for

doubledown

https://www.boards.ie/discussion/comment/121739087#Comment_121739087

Heating was work absolutely fine until about 10 days ago

embracingLife

..

halkar

This one is 130 with 1" Bsp might be suitable for direct replacement assuming wiring is compatible. If you have isolation valves above and beyond the pump it would take few minutes to replace.

https://www.screwfix.ie/p/wilo-yonos-pico-25-1-6-130-glandless-circulating-pump-230v/6153x

embracingLife

Your existing pump mentioned is very standard and easy to get similar which can be fitted into the existing pipes. No need to adjust the pipes. He was looking to rip you off for his employers benefit.

John.G

https://www.boards.ie/discussion/comment/121739168#Comment_121739168

An excellent choice, i have one installed for over 4 years.

Sleeper12

As a plumber I find it very odd that he wants you to source the pump. I'd strongly suggest getting a different plumber.

Tradesman should always supply the materials. This makes him responsible for the entire job

embracingLife

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