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.

Bathroom steam air vent

Options
mmc239
mmc239 Member Posts: 81
What would be a good replacement air vent for my bathroom. My current vent is a vertical Varivalve the girgals and hisses. It spits a little water out too. 

Comments

  • BobC
    BobC Member Posts: 5,478
    Options
    That's a Sunrad and those produce a lot of condensate for their size, being such a small radiator it's probably piped with a small pipe. That VariValve looks like it's wide open and that means it's venting very fast. the condensate is fighting with the steam over who gets to use the pipe. Varivalves are aggressive vents and in the wrong places can be a problem. Try turning that vent down to 1/4 or less and see if that helps.

    I have a slightly larger Sunrad and i use a Maid O mist #5 on it and it's quiet as a mouse
    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
  • mmc239
    mmc239 Member Posts: 81
    Options
    Thanks. Any setting I put it to it spits water and makes noise 
  • neilc
    neilc Member Posts: 2,703
    Options
    how are things down in the boiler room?
    pressure staying low? under 1.5?
    pigtail checked for free breathing back to the boiler?
    main venting functional ?
    known to beat dead horses
  • mmc239
    mmc239 Member Posts: 81
    Options
  • neilc
    neilc Member Posts: 2,703
    Options
    If I'm seeing that right,
    the Ptrol is set to 2psi cut in,
    what does the gage go up to when firing?

    dial the Ptrol down to its lowest setting,
    and what is there for differential? the cut out difference?

    ideally you want to stay under 2 psi,
    1 1/2 is even better,
    as low as you can go,
    known to beat dead horses
  • Long Beach Ed
    Long Beach Ed Member Posts: 1,210
    edited November 2022
    Options
    A slower vent should stop your problem, assuming the pitch and pipe sizing are correct. As BobC said, the fast vent is causing copious amounts of condensate to form quickly which fights with the opposing steam in the runout. Sow it down with a smaller vent. Try a Gorton #5.