Fire Damper HVAC systems

Curtain Fire Damper

Curtain fire damper is a 3 hour UL classified static (fans off)curtain style fire damper for use in HVAC systems that shut downduring a fire event. Fire dampers used for the protection of openings in walls, partitions, or masonry floors with fire resistanceratings of 3 hours or more and shall have a 3 hour fire protectionrating. The IBD23 can be installed vertically in walls or horizontallyin masonry floors and is rated for airflow in either direction.STANDARD CONSTRUCTIONFRAME AND BLADES MATERIALGalvanized steel (in gauges required by UL listing R-5531).CLOSURE SPRINGS 301 stainless steel constant force type (horizontal mount only)FUSIBLE LINK165°F (74°C) is standard. 212°F (100°C) available as an option.

Damper Styles and Sizes

Style A

Frame and blades in air stream Sleeve optional75 – 85% free area MINIMUM SIZEVertical Installation – 4″w x 4″h (102 x 102)Horizontal Installation – 6″w x 6″h (152 x 152) MAXIMUM SIZESingle SectionVertical Installation – 36″w x 36″h (914 x 914)Horizontal Installation – 30″w x 451/2″h (762 x 1156) Multiple Section AssemblyVertical Installation – 90″w x 72″h (2286 x 1829) Horizontal Installation – 90″w x 91″h (2286 x 2311).

Style B

Blades out of air stream Sleeve optional80 – 90% free area MINIMUM SIZE Vertical Installation – 4″w x 4″h (102 x 102)Horizontal Installation – 6″w x 4″h (152 x 102)MAXIMUM SIZE Single Section Vertical Installation – 36″w x 32″h (914 x 813) Horizontal Installation – 30″w x 40″h (762 x 1016) Multiple Section AssemblyVertical Installation – 90″w x 68″h (2286 x 1727) Horizontal Installation – 90″w x 81″h (2286 x 2057.

NON  RETURN DUMPER

For installation into walls or rectangular ducts

Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation

Maximum differential pressure: 100 Pa

Angle section border to be installed in wall openings

Available in standard sizes and many intermediate sizes

Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuationOptional equipment and accessories

Installation subframe

Powder coating (RAL or DB)

Application

Type UL non-return dampers for installation into internal walls and rectangular ducts

Prevention of unwanted airflows against the intended airflow direction when the system is not in operation

Blades close automatically when the system is shut down

Maximum differential pressure: 100 Pa

Special characteristics

Any intermediate sizes within the standard size range are available

operating temperature: –20 – 80 °C

Maximum differential pressure: 100 Pa

Non-return dampers are opened and closed by the airflow; no actuator is required

Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuation

Nominal sizes

B: 200, 400, 600, 800, 1000, 1200, 1400, 1600 mm (intermediate sizes: 201 – 1599 mm in increments of 1 mm)

H: 215, 315, 415, 515, 615, 715, 815, 1015, 1215, 1415, 1615 mm (intermediate sizes: 216 – 1614 mm, in increments of 1 mm)

Any combination of B × H