Motorized duct dampers rectangular
[DOCX File]23 33 00 - DOA Home
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Dampers must be type B curtain type with curtain 100% out of air stream. Dampers larger than 30” by 30” or with velocity rating requirements of 3000 fpm or higher, may be multiblade type with blades …
[DOCX File]Section 23 37 00 - AIR OUTLETS AND INLETS
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C.Dampers for Gravity Ventilators without Duct Connection: Construct damper of the same material as the ventilator and of the design to completely close opening or remain wide open. Hold damper in …
[DOC File]PART 1 - Broward County Public Schools
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Dampers capable of moving freely through a full 90 degree arc. Model CD-50 as manufactured by Ruskin or approved equal. Opposed blade type dampers are to be provided when duct dimensions are greater than 12 inches in depth. Parallel blade type dampers may be provided when duct …
[DOC File]Heating, Ventilation, Air Conditioning, & Refrigeration
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Never ever install these: These are motorized dampers that can be installed in the duct system. They block the air flow and will destroy the air circulation of the HVAC system. Honeywell makes a zone …
[DOC File]SECTION 15821
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1. For Dampers Installed in Exposed, or Accessible Concealed Ductwork: Indicating quadrant with heavy metal handle, end bearing, and means for locking damper in all positions. 2. For Dampers Installed in …
[DOCX File]15973b
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For duct installations, provide an aluminum honeycomb cell air straightener with maximum openings of ½” and minimum of 3” depth. Each airflow measuring element shall contain multiple Total and Static pressure sensors, placed at equal distances (for rectangular …
[DOCX File]SECTION 23 33 00
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Provide balancing dampers on duct takeoff to diffusers, grilles, and registers, unless dampers are specified as part of the diffuser, grille, or register assembly. Dampers shall be fitted with quadrant …
[DOC File]SECTION 15820 - DUCT ACCESSORIES
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Include elevated platform for insulated duct mounting. MOTORIZED VOLUME DAMPERS. Dampers: AMCA-rated, opposed-blade design; 2.8 -mm minimum, galvanized-steel frames with holes for duct …
[DOCX File]Price Industries - The Science of Comfort
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The duct shall be constructed of 24 gauge type zinc-coated steel for round ducts, and 22 gauge zinc-coated steel for rectangular ducts. The damper shall be 22 gauge zinc-coated steel, with …
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