Installation
28
RT-SVX46G-EN
Secure the outward edge of each duct cover with 2
screws.
4. For the 4 and 5 ton units, 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. Place the supply duct cover
over the return opening (insulation side down). Secure
the cover with 4 screws using the dimples on the top
surface to initiate screw engagement.
5. After completing installation of the duct covers for
horizontal discharge, proceed to TCO-1 instructions.
TCO-1 Instructions for Low NOx
Gas Furnace Option
For units equipped with the low NOx gas furnace option,
the TCO1 is located behind the indoor fan access panel
mounted on the top of the heat exchanger wrapper. See
the below figure for TC01 location.
All the TCO1 tripping values on these units have the same
trippoint for Downflow and Horizontal configurations so
there is no need to make any changes.
TCO-1 Instructions
If the unit being installed is listed in the following list, the
limit control TCO1 must be replaced with the extra limit
control shipped in the heater compartment. Replace TCO1
following the instructions in steps 1 through 3 below. If the
unit being installed does not correspond to any in the
following list, skip steps 1 through 3 and go on to next step
in the installation process.
Note:
See
for the TCO limit locations.
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 down flow operation with
the TCO1 shipped attached to the combustion blower
for horizontal operation.
4. Replace heat section access panel.
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).
Figure 47. TCO1 location for low NOx gas furnace
TCO1 location
Figure 48. TCO1 location
Top Location
Flame
Rollout
Limit
Bottom Location
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.
