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[Homerglide]

Here for sale is a a 26-99 3-speed 115 volt for sale. Just got it and find that it pushes too much for this situation. So it was used for maybe 15 minutes.

http://www.pexsupply.com/Grundfos-52722512-UPS26-99FC-3-Speed-Circulator-Pump-1-6-HP-115-volt-5587000-p

$200 delivered to your door

[RSI]

Why don't you just run it on a lower speed?

[Homerglide]

Yeah, low speed is too much also. The purpose of the circulator is to charge the stotrage tanks of a closed system. Originally went with a 15-58 but it would not keep up with the boiler output. Tried the 26-99 and even on low the boiler couldn't keep up with the flow. Finally found the sweet spot with a Grundfos 15-100. Boiler out temp is steady at 190-195 out without a hickup.

Anyway the Grundfos 26-99 3-speed may very well fit an OWB open system. See pump curve at:

http://www.intermountainsales.net/files/SuperBrute%20Family%20Curves.pdf

[Homerglide]

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