steam in wet return

tseghaye

Why my wet return acts as steam supply ?

Jamie Hall

Two reasons come to mind right away -- a failed trap or traps or, more likely the boiler was replaced and the new water line is lower than the old one was.

Could also be much too high pressure and poor near boiler piping (no equalizer)

tseghaye

how high should the water line be from the floor. by the way the boiler is an old McLain steam boiler

JUGHNE

Show us pictures of boiler and floor to ceiling piping.
Include the wet return for reference in regard to the sight glass.

Jamie Hall

tseghaye said:

how high should the water line be from the floor. by the way the boiler is an old McLain steam boiler

There is no exact figure. Far more important is how low should the wet returns be? And the answer to that is they should nowhere be less than six inches below the boiler water line. Check out in the wilderness --- they sometimes rise up rather staying on or near the floor where they belong.