12
FILTER UNPACKING, INSTALLATION, STORAGE AND OPERATION
(CONTINUED)
Inlet Options
The AstroFan
™
EC FFU is available as standard for plenum supply applications and is also available
with the option for prefiltration, either particulate or AMC, or in a ducted supply configuration. The
prefilter option is designed to accommodate standard 20"x20"x2" pleated prefilters. The ducted
supply option is available as either a 20"x20" square or round duct connection
Insulation Options
Insulation options are available to prevent heat loss, mitigate potential condensation, and/or provide
sound attenuation. Determining the use of these options is the responsibility of the design engineer.
The 2" foil back option is an aluminum foil-backed fiberglass (installed 6.0 R-value) attached to the
outside of the housing using adhesive-mounted insulation anchors and caps.
Double Poly Bag Option
A double poly bag arrangement is available for those clients whose cleanrooms are ultra-sensitive to
potential contamination exposure. The double-bagged FFU housing is removed from the container
outside of the cleanroom. At a staging area, typically in an area of lesser cleanliness than the
cleanroom such as an ante room, the single-bagged FFU housing is removed from the outer bag and
then taken into the cleanroom. Inside the cleanroom, the FFU housing is removed from the second
bag and staged for installation.
Fig. 10 PreFilter/Square Duct Option
Fig. 11 Round Duct Option
