Trane Precedent THJ072A Installation, Operation And Maintenance Manual page 34

Installation
Air-Fi® Wireless Communication
Interface
The factory installed wireless communications interface is
installed in the downflow discharge position.
If a unit is to be converted to horizontal discharge, the
following conversion must be performed:
1. If the unit has an economizer, it must be pulled out in
the operating position.
2. Remove the screw from the mounting bracket. Refer to
downflow view for screw and bracket location.
3. Mount the bracket in the horizontal discharge location.
Refer to horizontal view for screw and bracket location.
Note: Cable ties must be removed to allow the cable to
extend to the horizontal mounting location.
Main Electrical Power
Requirements
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious
injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by
Trane or others, refer to the appropriate
manufacturer's literature for allowable waiting periods
for discharge of capacitors. Verify with a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
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.
• Verify that the power supply complies with the unit
nameplate specifications.
• Inspect all control panel components; tighten any loose
connections.
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• Connect properly sized and protected power supply
wiring to a field-supplied/installed disconnect switch
and to the main power terminal block (HTB1) in the unit
control panel.
• Install proper grounding wires to an earth ground.
Electric Heat Requirements
• Verify that the power supply complies with the electric
heater specifications on the unit and heater nameplate.
• Inspect the heater junction box and control panel;
tighten any loose connections.
• Check electric heat circuits for continuity.
Low Voltage Wiring
Mount the indoor thermostat, zone sensor, or
programmable zone sensor in accordance with the
corresponding thermostat installation instructions. Install
color-coded, weather-proof, multi-wire cable according to
the field wiring instructions.
Note: Refer to thermostat or zone sensor wire installation
guide for proper wire gauge.
Condensate Drain Configuration
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
An evaporator condensate drain connection is provided on
each unit. Refer to the ductwork section in the Installation
chapter for the appropriate drain location.
The 6 to 12.5 tons condensate drain pan is convertible.
Refer to the ductwork section in the Installation chapter for
the drawings. It can be converted to drain condensate out
the front side of the unit or through the base.
To convert drain condensate out the front of unit:
1. Remove evaporator access panel and supply air
access panels.
2. Remove the support panel that the condensate drain
pan exits through.
3. Slide the condensate drain pan out of the unit and
rotate 180°.
4. Slide the condensate drain pan back into the unit, align
the drain with the grommeted opening in the rear
support panel and push until the coupling is seated in
the grommet.
5. Replace the front support panel by aligning the panel
with tabs in the raceway. Align the condensate drain
RT-SVX074A-EN