Trane RT-SVX38C-EN, Installation, Operation And Maintenance Manual

Page: 21 / 48

Installation
RT-SVX38C-EN 21
Horizontal Discharge Conversion
(6 to 10 Ton Units)
Note: 6 to 10 ton units the supply cover to return opening
and return cover to supply opening.
Supplies needed by installer for conversion: 3 oz. tube of
high temperature RTV sealant (500°F/260°C: Similar to
Dow Corning 736).
Important: Failure to use recommended sealant could
result in unit performance loss.
If a unit is to be converted to a horizontal discharge, the
following conversion must be performed:
1. Remove RETURN and SUPPLY duct covers.
2. Place SUPPLY DUCT COVER over downflow return
opening (insulation side down).
3. Using self-drilling screws (or screws removed from
duct cover), screw through dimples to attach DUCT
COVER to base.
4. On original RETURN DUCT COVER, apply ¼" (6mm.)
continuous bead of 500°F RTV sealant around flange
(opposite insulation side), as shown.
5. Slide RETURN DUCT COVER (insulation side up) into
supply opening until inward edge of duct cover
engages with the 2 retaining clips on the duct flange.
Secure outward edge of the duct cover with two
screws.
Note: If unit is equipped with Return Air Smoke Detector,
refer to field conversion instructions for horizontal
discharge before installing return air duct.
Note: If unit is equipped with Discharge Air Sensing
option refer to the following figure for proper tube
positioning based on unit tonnage.
6. After completing installation of the duct covers for
horizontal discharge, proceed to TCO-1 instructions.
TCO1 Instructions—
Unit Model Numbers
YSC072ED*H, YSC090ED*H, YSC102ED*H,
YSC120ED*H
If the unit being installed is one of these models, the limit
control TCO1 must be replaced with the extra limit control
shipped in the heater compartment. Replace TCO1 using
steps 1 through 3 in the following instructions. If the unit
being installed does not correspond to any of these
models, skip steps 1 through 3 and go to the next step in
the installation process.
1. Remove the heat section access panel.
2. Remove TCO1 from shipping location, attached to the
combustion blower.
3. Replace and discard the existing TCO1 originally
installed at the factory for downflow operation with the
TCO1, which was shipped attached to the combustion
blower for horizontal operation.
4. Replace heat section access panel.
Figure 20. Duct cover
Figure 21. Duct cover
Supply Duct Cover
Screw into 4
dimples on top edge
RTV Sealant
Figure 22. Supply and return covers
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
Insulation side
down
Supply duct cover
Insulation side up
Return duct
cover