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Boiler feed pump overfilling
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targetman74
Member Posts: 6
Looks like this has been going on for a couple years. Got called because of water on boiler room floor. The receiver is full, but the PRV is still feeding. Float problem?
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Comments
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Yes, it is on the RH end of the tank. There is a float inside like a toilet tank float. See what the water pressure is on the supply side of the float. I think 30 psi is max.
If the boiler pump is constantly cycling (like every 30 seconds) then you have a bad check valve between the boiler and the pump. If it doesn't get fixed you will kill the boiler.0 -
What is make up water supply pressure? Generally, mechanical float valves are not recommended when supply pressure exceeds 50 PSI.
What is regulated supply pressure downstream of PRV?
A better make up water arrangement is a float switch and solenoid valve.
Typically this is the preferred arrangement.Dennis Pataki. Former Service Manager and Heating Pump Product Manager for Nash Engineering Company. Phone: 1-888 853 9963
Website: www.nashjenningspumps.com
The first step in solving any problem is TO IDENTIFY THE PROBLEM.0 -
The PRV is 25-75 range. Someone wrote set to 20 PSI. First laid eyes on this yesterday. Thinking how could I add solenoid valve.0
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@targetman
Take the original float out and install one with a switch. Wire the switch to the solenoid. Move the MU water to a different tapping. Put a tee in the vent line to add the water if you have to
Looks like a Shipco Tank? Call the local Shipco rep and they can hook you up0
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