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Weil-McLain System Circulator Pump
I have a Weil-McLain Gold Series 3 GV 4 boiler. The system circulator just started to make an unusual humming noise. (Sounds like the bearings are going) Should I replace it with the same pump that is in the boiler? Bell & Gossett NRF 22 or is there a different pump that is recommended? If there is a different pump would I have to replace both the system pump and the bypass pump?
Thanks for any help that you can provide.