Browsed around and can't seem to find an answer on the forum so I'm reaching out for some assistance.
I have a single pipe steam system where the boiler is overflowing. I have an automatic water feeder.
When the boiler is sitting idle the water level is holding steady at about 3" down from the top of the sight glass. It will remain this way indefinitely. When there is a call for heat and the boiler fires up it usually maintains the correct level for 24-36hrs of normal cycling on and off. Around 48hrs of operation I notice the water level is over the top of the sight glass. I blow down approx 3 gallons of water to get the water level to where its supposed to be and the process begins again.
I guess my question is if the boiler is holding level while idle, why is it overflowing when under operation?
Is it a problem with my feeder?
Is there a faulty steam vent somewhere?
Am I getting too much condensate trapped up in the system?
Is my return possibly clogged or restricted slowing the return of condensate? Causing the water feeder to activate, then when the system cools the slow return is causing the problem as the water returns to the boiler?
I need some help diagnosing the issue and any help would be greatly appreciated.
Thanks in advance
Mark
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