SCXF-SVX01T-EN
33
Note: Plenum insulation must be applied properly to
prevent air bypass around the plenum. See Figure
20, p. 33.
Figure 20. Correct plenum insulation placement
Plenum Bottom View
Dashed line indicates correct insulation placement.
Installing the Airside
Economizer
Note: Airside economizer option available on 20 to 80 tons
only.
Unit Handling
1. Hoist the damper cabinet to the installation location
with straps positioned under the skid as shown in
Figure 21, p. 34. Use spreader bars to prevent unit
damage during lifting.
2. With the damper cabinet at its final location (near the
unit), remove the screws securing it to the skid from the
side flanges. Retain these screws for later use.
Unit Preparation
3. Open the access door and remove the damper
cabinet’s support legs and its hanging bracket. The
support legs are secured to the skid, and the hanging
bracket is secured with wire ties to an inside flange
near the cabinet’s base. Remove the C-channel collar
and install it on the unit, if not already installed.
4. Remove the roll of 1/8" thick gasket from the damper
cabinet’s W-supports, and apply it to the C-channel
collar mounted on the rear of the unit. This gasket will
provide a seal between the damper cabinet and the
unit.
5. Attach the legs (with screws provided) to the leg
brackets located on the damper’s base.
6. Attach a field-provided clevis of suitable strength ( > 1/
2"), to each of the corner lifting brackets through the 7/
8" diameter holes.
7. Attach to the clevises a means of lifting the damper
cabinet from its skid.
Unit Installation
8. Slowly raise the damper cabinet from its skid.
9. Attach the hanging bracket across the front of the
damper cabinet. Position it with its short flange pointing
to four o’clock, and secure it with screws provided. See
Figure 21, p. 34.
10. Lift the damper cabinet and position it such that the
hanging bracket is positioned over the unit’s C-channel
collar.
11. Lower the damper cabinet until the holes in its side
flanges are aligned with the holes in the C-channel
collar. Install screws removed in step 3 through the
damper cabinet’s side flanges and into the C-channel’s
corresponding holes.
12. Attach ductwork to the top and back dampers
according to local codes.
Field Wiring Connections
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements
for field wiring installation and grounding as
described in NEC and your local/state/national
electrical codes.
13. Open the damper cabinet’s door and connect the
factory-provided plug from the actuator to the
factory-provided plug in the unit’s filter section.
14. Cabinets with TRAQ dampers only: Unroll two rolls
of pneumatic tubing located inside damper cabinet.
Route tubes through cabinet’s front upper panel (0.25
dia. holes provided). Connect to two pneumatic tubes
protruding from customer electrical connection panel
on unit. Be sure to connect black to black, white stripe
to white stripe).
15. Cabinets with TRAQ dampers only: Locate the
“bullet” sensor and rolled up wiring in the unit’s filter
section. Route it into the damper cabinet and insert the
sensor into the sensor mounting clip attached to
underside of one of the Traq dampers.
Installation - Mechanical
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