Pre-Startup; Units With Vfd; Pre-Startup Checklist; Supply Fan - Trane Technologies IntelliPak Signature SCWF Installation, Operation And Maintenance Manual

Pre-Startup

Before starting up units, perform the following procedure to
ensure proper unit operation.

Units with VFD

This panel is hinged to allow service access to fan motor
and belt drive components that are located behind it.
Note: The panel weight rating is 225 lbs. total including
factory-installed components.
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.
WARNING
Hazardous Voltage w/Capacitors!
Failure to follow instructions below could result in
death or serious injury.
Disconnect all electric power, including remote
disconnects and wait for DC capacitors to discharge
before servicing. Refer to the manufacturer's
recommendations for proper discharge time as DC
bus capacitors retain hazardous voltages after input
power has been disconnected. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. Verify with a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged before touching any internal components.
1. Remove the unit center cover panel to the left of the
VFD panel.
2. Verify/remove/discard the sheet metal shipping screws
along the top and bottom edges of the VFD panel.
3. Disconnect the communications cable from the keypad
on the VFD door panel.
4. Turn the two slotted-head fasteners on the right edge of
the VFD panel fully counterclockwise.
5. Pull on the handle to swing the panel 180°.
Note: To secure the panel in the open position during
service procedures, attach the chain mounted to the
cabinet frame behind the unit center cover panel to
the chain retainer notch on the edge of the VFD
panel.
SCXF-SVX01T-EN
To close and reattach the panel, reverse the above
procedures.
Note: Verify that all wires are in proper position and not
rubbing once the panel has been secured.

Pre-Startup Checklist

Complete this checklist after installing unit to verify all
recommended installation procedures are complete before
startup. This does not replace the detailed instructions in
the appropriate sections of this manual. Always read the
entire section carefully to become familiar with the
procedures.

Supply Fan

• Verify the fan and motor shafts are parallel.
• Verify the fan and motor sheaves are aligned.
• Check the fan belt condition and tension. Adjust the
tension if belts are floppy or squeal continually. Replace
worn or fraying belts in matched sets.
• Ensure the fan rotates freely.
• Tighten locking screws, bearing set screws and
sheaves.
• Ensure bearing locking collars do not wobble when
rotated.
• Remove fan assembly tie down bolts.
• Ensure fan rotation is in direction of arrow on fan
housing. If incorrect, verify incoming power phasing is
correct. Switch wires on the fan contact to properly
phase fan if necessary.

Ductwork

• Ensure trunk ductwork to VAV boxes is complete and
secure to prevent leaks.
• Verify that all ductwork conforms to NFPA 90A or 90B
and all applicable local codes

Water-Cooled Unit Piping

• Verify condensate drain, water piping drain plugs,
economizer header, and condenser vent plug are
installed.

Units with Hydronic Heat

• Verify the entering water temperature sensor is
installed upstream of the hydronic coil.

Units with Electric Heat

• Verify that a zone temp sensor is installed.
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