Search found 2 matches

by Dragon
Thu Aug 12, 2010 12:14 pm
Forum: Help and Advice
Topic: Rattle in MA-ND4 Acuator Damper
Replies: 7
Views: 9041

Re: Rattle in MA-ND4 Acuator Damper

Yes, there is a bypass damper. There are 2 zones supplied by 4 dampers. One zone is the 1st floor and the 2nd is the basement. The problem occurs when only the primary upstairs zone is running. Off the top of my head I cannot verify 100% if the rattle is also occurring when the downstairs zone is ca...
by Dragon
Wed Aug 11, 2010 9:55 am
Forum: Help and Advice
Topic: Rattle in MA-ND4 Acuator Damper
Replies: 7
Views: 9041

Rattle in MA-ND4 Acuator Damper

Hello, I have a MA-ND4 actuator and damper installed on my air handler. When the system calls for AC the damper functions (opens and closes) just fine. The issue I have is that when the blower on the unit increases speed for the AC airflow the damper rattles. I am getting some kind of flutter in the...