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EQUIPMENT OVERVIEW
The AstroHood
™
S-lll RSR Ducted HEPA Terminal Hood is a low-profile and lightweight, ducted
room-side replaceable HEPA/ULPA filter terminal module of anodized aluminum construction using
a gel seal minipleat or separator-less style filter pack. The Astrohood S-III RSR unit is designed to
provide unidirectional airflow when installed in drywall or T-bar ceilings. AstroHood S-III RSR modules
are available in three nominal sizes: 24”x24”, 24”x36”, and 24”x48”, for either 1-1/2” or 2” T-bar, and
with 8”, 10”, 12”, or 14” diameter inlet collars.
The filter pack is sealed in an anodized extruded aluminum frame with integral gel seal channel to
ensure an air-tight seal. The filter’s extruded aluminum center divider is furnished with a port for
in-room baffle plate adjustment, and for measuring of an upstream challenge aerosol and static
pressure. AAF Flanders does not recommend using the aerosol port as a means of aerosol injection.
The one-piece hood/inlet collar is made of spun aluminum, and the inlet collar is ribbed to secure the
flex duct retaining strap. A 22-gauge, 40% open area removable perforated grille protects the media
pack. Hanging holes (1/8" in diameter) are drilled on the module’s top four corners to secure seismic
restraint wires or to hang the unit.
Unpacking
• Carefully remove the unit from the shipping carton and inspect for any damage that may have
occurred during transportation. Two workers minimum are required to lift the unit from the
container.
• Remove housing from shipping carton and inspect for concealed damage and any hardware that
may have become loose in transit.
• Remove the Grille and Field Installed Trim, if supplied, and set aside. It is good practice to label or
mark the grille and trim components to match with the respective unit to ensure good fitment.
Installation
Install and support housing as instructed on the following pages. Flexible duct connections should be
made using stainless steel, worm-gear type draw bands for maximum reliability. Housing installation
must be accomplished in a professional manner with flanges or trim properly sealed to prevent
contaminant infiltration from the interstitial space.
