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.

Water level rises in sight glass when heated

yorks6988
yorks6988 Member Posts: 14
in Strictly Steam
I have searched for this problem and could not find it.
The water in my sight glass is about 1/3 full.
When the boiler is turned on and the water heats up, the sight glass slowly fills all the way up. I timed it and it takes about 2 minutes to do so.
No surging or jumping, just a slow steady rise and then it stays there.

Any ideas?

Comments

  • neilc
    neilc Member Posts: 2,854
    edited September 2023
    is the upper valve open? are you sure?
    what about that bottom one ?
    maybe it's, they're clogged inside and needs cleaning?
    post pictures and maybe someone sees something, else,
    has the pigtail been serviced?
    known to beat dead horses
  • BobC
    BobC Member Posts: 5,502
    Do you have to drain water from the boiler to get to the right water level when the system is cold or does the water level go back down on it's own as the system cools down?

    Bob
    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge

Categories