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.
This might be a stupid statement....
If you replace the circulator with a different one. Make sure it is installed properley. We have come across two GV boilers this year with replacement circs installed the wrong way. The instructions will tell you how they can be mounted