Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Hurling Water

Brian_2
Brian_2 Member Posts: 5
in THE MAIN WALL
Got a call today from a Contractor buddy about a trouble call in a vacuum system. He told me that the hurling water to create the vacuum was over 200 degrees and at this temperature the pump was cavitating and the pump could not pull a vacuum on the system. The pump cavitating makes sense to me. But.... why is the hurling water at 200 degrees? He asked me.. "what caused this"?

To add thinking terms, he also said the condensate was returning at 160 degrees (how much.. I dont know). The system has a high limit shut off set at 180 degree.

He said he found the system in this condition in the morning when he went to the boiler room. The system is semi-tight (pump does make 8" in a few minutes, but loses it in about the same amount of time) so I can only guess that the controls went bad and the pump was always on.

Anyone have a clue or experieinced this? I know there are controls to dump cold water into the hurling tank on overheating, but it was an option that wasnt ordered on this piece of equipment.

On another subjet. How tight are older vacuum system supposed to be? Is there a reference on how tight they should be and how much air is leaking into the system?

Comments

  • Unknown
    Unknown Member
    Hot hurling water

    comes from hot condensate. Bad steam traps are too blame. The problem is in the distribution system, not the condensate pump system. Even under a huge load of real cold weather and long run cycles, it should be cooler than that at the tank.

    Pump seals need water on them to hold up. At that temperature, they have vapor on them some of the time. They will wear fast. That seems to go first, in my experience.

    Noel
This discussion has been closed.

Categories