Quote:
Originally Posted by BandLAir
In our 2020 Flying Cloud the hot water heater is supposed to have an air space at the top that serves to dampen water pump vibrations/pulsing. There is a whole procedure for making sure that air pocket is there. But yah, the water pump is still noisy even after doing this. I don't think the water pump is mounted with proper vibration isolation. Perhaps while I am sheltering-in-place (COVID-19) I will take a look at this.
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You hit the nail on the head. Positive displacement pumps including the shurflow should be mounted on rubber dampers and should have 6 inch minimum flexible inlet and outlet flying leads.
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