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Hand Controlled Dampers (SID-HD)

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Product Description

The hand damper are used to restrict airflow through the by-pass trunk during by-pass operation.

Industry standards are changing.  It is not sufficient just to add a by-pass damper to a system.  Setting the differential pressure will prevent the Bypass Duct from becoming the path of least resistance and results in:
• Easy to control System Static Pressure
• Reduced or Eliminated ECM Fan Motor Hunting
• Reduced or Eliminated Bypass Damper Hunting
• Reduced or Eliminated System Short Cycling due to Fast Air Mixing and Excessive Bypass Air Volume
EWC Controls offers three different models.  Whether your ducts are round or square or if you are retrofitting there's a model to satisfy your need.
For more information go to:  http://www.ewccontrols.com/acrobat/090377a0162.pdf

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