8
Butterfly Damper
for wider adjustment of airflow
from roomside. This option includes a fixed
distribution plate and swagged inlet. Dampers in
the HVAC system are recommended.
Fixed Distribution Plate
for applications where
no adjustment of the airflow is required from the
roomside and all are in the HVAC system.
Adjustable Distribution Plate
for fine tuning
the airflow from roomside. Dampers in the HVAC
system are recommended.
Fig: 06 Dampers and Operation
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-backed option is an aluminum foil-backed fiberglass (installed 6.0 R-value) attached to
the housing using adhesive-mounted insulation anchors and caps.
Dampers and Damper Operation
The AstroHood S-lll RSR Ducted HEPA Terminal Hood is supplied with Split Butterfly, Telescoping
Disc, or no damper (i.e., fixed distribution disc).
The Split Butterfly and Telescoping disc dampers are adjustable from the room side via Phillips head
screwdriver. Please note that a filter with centerboard and access port must be supplied to access
the damper adjustment.
