by rosebery »
Wed Dec 30, 2009 6:01 pm
If its the pipes tickinmg or clicking that suggests that the joists were not notched enough and the pipes are binding o them. When the system starts up the pipes expand. Because they are tight on the joists they stick a lttle bit and you get the ticking/clicking noise as they get hotter. The reverse occurs as they cool down. Solution - increase size of notches concerned or wrap the pipes.
Cheers