caryseidner Posted August 25, 2008 Report Share Posted August 25, 2008 I saw this today during an inspection and I can't figure out what it is for. The two rectangular ducts are the supply and return right after (or before) the FAU. I assume this rod connects to a damper inside the round duct and there is a weight or counterbalance on the rod. What is it for? Why would you ever want or need to open this path? Why a weight/counterbalance? Image Insert: 42.27 KB Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted August 25, 2008 Report Share Posted August 25, 2008 It's a barometric damper in a bypass on a zoned system. When zone dampers are closed, air pressure builds up in the ducts. A bypass relieves the pressure. Quote Link to comment Share on other sites More sharing options...
caryseidner Posted August 26, 2008 Author Report Share Posted August 26, 2008 Ahh.... That makes sense Bill. There are 2 zones for this FAU. Thank you very much! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.