Installation
RT-SVX46G-EN
29
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 down-flow 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 1/4-inch
(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 TCO1 instructions.
Return Air Smoke Detector
Note:
Consult smoke detector manufacturer if daisy
chaining is required.
The factory installed return air smoke detector is installed
in the downflow discharge position. No additional field
setup is required.
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 3 screws from the mounting brackets.
Note:
Refer to downflow view for screws locations.
Figure 49. Duct cover
Figure 50. Duct cover
Supply Duct Cover
Screw into 4
dimples on top
edge
RTV Sealant
Figure 51. For YZC072F-120F
Figure 52. Supply and return covers
Downflow application
Horizontal application
Insulation side
down
Supply duct cover
Insulation side up
Return duct
cover
