mangoManFT
New Member
So I tried to save a few bucks and partially drained my water heater to remove the sediment at the bottom. I have a hot water re-circulation pump underneath the water heater connected to a dedicated recirc line. Unfortunately, I did not close the valve between the water heater drain hose bib and the recirc pump when I did the draining, and I believe air got into the recirc pump. The pump is 'on demand' and starts by me clicking a button, and is supposed to shut off when the hot water reaches the pump. It now does not shut off, which is why I believe there is air trapped in it.
Is my suspicion correct - will air in the line cause the pump to not move water anymore?
If so, how can I get the air out? The recirc line runs thru my attic before coming down to the water heater, and as far as I know there is no bleed valve at the high point in the recirc line. It seems I will need to call someone to disconnect the pump and use some sort of vacuum pump to get the air out of the line. There goes the few bucks I saved - lesson learned.
Is my suspicion correct - will air in the line cause the pump to not move water anymore?
If so, how can I get the air out? The recirc line runs thru my attic before coming down to the water heater, and as far as I know there is no bleed valve at the high point in the recirc line. It seems I will need to call someone to disconnect the pump and use some sort of vacuum pump to get the air out of the line. There goes the few bucks I saved - lesson learned.