RE: Manual dampers – Vertical mounted or Horizontal?

When installing manual dampers into long sections of solid duct work does it make any difference whether you mount them vertically verses horizontally? If you mount them vertically and have them positioned on an angle. Does this increase air flow into that section of duct?

joshmorgan Rookie Asked on March 20, 2018 in Commercial HVAC.
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2 Answers

I’m trying to mount them horizontal. Found some of them vibrating and making crazy noises when installed vertical. Also the 8” damper will stick out about 1 1/4” (for Southwark brand) and even if it is slightly closed it still will stick out and create a turbulence in the main duct.

Rookie Answered on March 26, 2018.
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