Thanks for the reply Erik.
do you mean the mechanical stop "points" on the motors. I'll try adjusting the damper.
There is currently no by-pass on the system. Would this require an additional damper on the by-pass pipe?
Thanks again for your help.
Mark
Search found 2 matches
- Mon Nov 15, 2010 9:46 am
- Forum: Help and Advice
- Topic: Excessive whistling Noise
- Replies: 3
- Views: 10910
- Fri Nov 12, 2010 11:40 am
- Forum: Help and Advice
- Topic: Excessive whistling Noise
- Replies: 3
- Views: 10910
Excessive whistling Noise
I have a 3 zone system (powered by a HEIL propane furnace). When the heating is on in 1/3 of the zones, I get a loud whistling noise from one of the other zones that is closed. I can tell it's coming from around the "dampner vanes" just by putting by ear next to it. when I open the "n...