Duct damper types
[DOC File]SECTION 233113 – DUCTS AND DUCT ACCESSORIES
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EDIT DAMPER TYPES IN SUBPARAGRAPH BELOW AS REQUIRED. 1. Types: a. Standard Damper: 3.2cfm/sq ft maximum leakage rate at 2000 fpm and 1 inch wg for 48 inch wide damper (based on AMCA 500). b. Low Leakage: 2.7 cfm/sq ft maximum leakage rate at 4000 fpm and 1 inch wg for 48 inch wide damper (based on AMCA 500). 2.
[DOC File]Section 23 31 00 - HVAC DUCTS AND CASINGS
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Duct Sealing, Air Leakage Criteria, and Air Leakage Tests: Ducts shall be sealed as per duct sealing requirements of SMACNA Standards for duct pressure classes shown on the drawings. Duct accessories exposed to the air stream, such as dampers of all types (except smoke dampers) and access openings, shall be of the same material as the duct or ...
[DOCX File]Section 23 31 00 - HVAC DUCTS AND CASINGS
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Iris dampers are available for circular ducts only, in diameters up to 800 mm (It should be noted that the damper casing is approximately twice the diameter of the duct). Backdraft Dampers Air pressure operated unidirectional rectangular (single or multi-blade) with adaptors if fitted to circular or oval ducts.
Five Types of Dampers and When To Use Them
2.Each fire damper (for link service), smoke damper and automatic control damper. 3.Each duct mounted smoke detector. 4.For cleaning operating room supply air duct and kitchen hood exhaust duct, locate access doors at 6 m (20 feet) intervals and at each change in duct direction.
[DOCX File]DFD HVAC DESIGN CRITERIA - DOA Home
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E. Duct accessories exposed to the air stream, such as dampers of all types (except smoke dampers) and access openings, shall be of the same material as the duct or provide at least the same level of corrosion resistance. 1.4 SUBMITTALS . A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.
[DOC File]SECTION 15821
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They are factory matched to the damper and shipped on the damper. FAST Angle and PFMA (Picture Frame Mounting Angle) reduce installation time and cost. FAST Angle is a single angle used with Ruskin dampers for one angle installations. FAST Angle and PFMA are qualified for all types of construction (masonry, wood and metal stud).
Ruskin Manufacturing
Duct: For penetrations through fire-rated assemblies, terminate insulation at fire damper sleeves and externally insulate damper sleeve beyond floor to match adjacent duct insulation. Overlap damper sleeve and duct insulation at least 2 inches (50 mm). Seal penetrations through fire-rated assemblies.
[DOC File]SECTION 230713 - DUCT INSULATION
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Suggest using different symbols for different ratings/ types, including a damper schedule or having a tagging system which includes all the needed information. STATIC FIRE DAMPERS Static fire damper assemblies must be UL 555 (6th edition) listed and labeled for static applications (where air systems do not operate during a fire) and meet ...
[DOCX File]23 33 00 - DOA Home
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Locate balance dampers back from diffusers and grilles as far as possible to reduce damper generated noise. Avoid the use of registers in grilles wherever possible. Transfer ducts shall be sized for a duct velocity of 300-500 fpm. 8.All duct systems shall be sealed and pressure tested in accordance with section 23 31 00.
[DOC File]Thermal Process and Mild Steel Pipework - eCollege
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Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-2, "Round Duct Longitudinal Seams," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards ...
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