EWC Controls Forum

Thanks, I'll let him know

My contractor wants to know what happens to the excess air that is blocked by the hand damper in the bypass? How should the hand damper be set since the barometric damper is set to control the airflow.

Can ND dampers be set to remain partially open when its zone is not calling, then open completely when the zone calls?

Thanks for the fast reply. There is plenty of room to have 6 feet or more of return air plenum if this is advisable. Also what do you think of a "dump zone" (air comes out of main trunk before any zone dampers and dumps to 3 or 4 registers in the home) but has no method of regulation via damper ...

I have a 4 zone system plus a "dump zone" The "dump zone" is totally unregulated (it's just three ducts that come off the main plenum with standard dampers. I also have a bypass duct from the end of the mail duct to the return intake. I noticed that your instructions say that the bypass should enter ...