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Main vent hissing when boiler is firing

Oz
Oz Member Posts: 8
in Strictly Steam
Is it normal for a main vent to hiss vigorously when the boiler cycles on? I recently had a main vent installed and, since then, I've noticed this hissing.

Comments

  • kcopp
    kcopp Member Posts: 4,476
    yes it is....

    its doing its job. However.... what is the steam pressure set for your boiler?.... it could be too high.
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