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Fig. 31 — Barometric Hood Box Parts Location
3. Install parts as shown in the following exploded view
(Fig. 32) using the seal strip and screws provided in the
parts box.
Fig. 32 — Barometric Hood Exploded View
Figure 33 illustrates the installed barometric hood parts.
Fig. 33 — Installed Barometric Hood Side View and
Isometric View
BAROMETRIC HOOD (HORIZONTAL CONFIGURATION)
For horizontal return and field installed economizer, install the
economizer as follows:
1. Install the field provided horizontal ductwork onto the
unit. Duct height must be at least 19
ever the duct can be no taller than the top of the relief
opening in the bottom panel, or airflow into the outside air
hood will be restricted. See Fig. 34.
3.
NOTE: This panel is not used for horizontal return applications.
Remove the screen from the provided panel and install it over the
relief opening cut in return duct.
4. Using the blade brackets, install the relief damper onto the
/
inches high, how-
1
2
27
Fig. 34 — Relief Damper
2.
Cut a 16 in. x 36 in. opening in the return duct for the relief
damper (see Fig. 34).
On the field installed economizer (CRECOMZR0**A00), a
birdscreen or hardware cloth is shipped attached to the bot-
tom panel used for vertical applications.
side of the return duct (see Fig. 35). The two brackets and
relief damper are provided with the economizer.
Fig. 35 — Installing CRBARHOD001A00 Over Relief
Damper
5.
Using
the
provided
CRBARHOD001A00 hood sides and top together (see
Fig. 36).
hardware,
screw
the
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