Damper Connections; Bottom Opening Duct Installation; Typical Duct Flat/Flange Connection; Typical Section With Duct Flat/Flange Connection - Trane CSAA Installation, Operation And Maintenance Manual

Component Installation
Figure 119. Typical discharge ductwork
recommendations
Splitters or
turning vanes
Vane turns in same
direction as fan rotation

Damper Connections

Standard damper sections include mixing sections, filter
mixing sections, face dampers sections, internal face-and-
bypass sections, and economizer sections. There are two
damper blade configurations available - parallel-blade and
opposed-blade. Traq™ dampers are another type of
damper available in mixing box sections.
Ductwork attached to the standard damper sections
should be sized to fit the opening of the damper. Duct
opening dimensions are provided in the submittals. When
using lined duct, ensure that the insulation does not
obstruct the damper opening (see
Figure 121).
Note: Damper blades should be checked for proper
operation from full-open to full-closed position
before unit start up. Damper blade positioning may
have changed due to shipping and handling
vibrations.
Figure 120. Typical duct flat/flange connection -
uninsulated or externally insulated
96
Figure 120 and
Figure 121.Typical section with duct flat/flange
connection- internally insulated

Bottom Opening Duct Installation

1. Install gasket to duct flange to ensure air tight seal.
2. Install duct into place underneath framed opening in
unit base per Figure 122. Refer to factory curb layout
provided with unit submittals for duct size and
location.
3. Bottom of unit base elevation is flush with duct
opening in bottom of unit (see
Figure 124).
Figure 123 and
CLCH-SVX07K-EN