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supply damper

Paul S_3
Paul S_3 Member Posts: 1,257
In a job in NYC there is a Honeywell damper on the supply duct directly out of the air handler...why would that be there?....it doesn't look like a fire damper but I can be wrong....it feeds a main trunk that 2 other air handlers are tied into....thank you Paul S
ASM Mechanical Company
Located in Staten Island NY
Servicing all 5 boroughs of NYC.
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  • Jamie Hall
    Jamie Hall Member Posts: 18,923
    Could it possibly

    be to prevent back flow through that air handler if it is off and one or two of the others are on?  Or is it just on that one air handler?  Dunno...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Steve Whitbeck
    Steve Whitbeck Member Posts: 669

    What Jamie said. There to close off backward flow and loss of air if that air handler is shut down - as in staging.
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