How do I wire this Grundfos 8620 circulator?

Nevin_2 · February 2003

I got a Grundfos model 8620 3-speed circulator along with a used furnace.
The capacitor is not wired. Where do the leads fasten? Is it polarized?

Also the spec plate says "115v", but inside the cover plate is "230 Volt".
Which is right? What is the large Motor screw for?

Thanks

Nevin

www.GardenGrapevine.comFurnaceOutdoor.html

Dana · February 2003

They have a website, www.grundfos.com I thiink. You should be able to get the info there.

hot_rod · February 2003

What you have

looks like a 15-42 3 speed. The 8620 is the date code. Built in the 20th week of 1986, I believe. Could it be that old of a pump?

hot rod

antman · February 2003

That pump does have the removable access to the impeller shaft, which I used to have to spin many of times on those old Grundfos pumps. Do the newer models have them also HR?

Ant

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How do I wire this Grundfos 8620 circulator?

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