48
RT-SVX092A-EN
Notes:
• If unit is equipped with Return Air Smoke
Detector, refer to field conversion instructions
for horizontal discharge before installing
return air duct.
• If unit is equipped with Discharge Air Sensing
option refer to the following section for proper
tube positioning based on unit supply duct
orientation / tonnage or see Discharge Air
Sensing Kit Installation Instructions (ACC-
SVN240*-EN) for more details.
Figure 57. Supply and return opening
Insulation side
down
Supply duct cover
Insulation side up
Return duct
cover
6. After completing installation of the duct covers for
horizontal discharge, proceed to TCO-1 instructions
(two-stage gas only).
Horizontal Discharge
Conversion (D.0 and D.1 Cabinet
Units)
D.0 and D.1 cabinet units require purchase of
FIAHZDC001* Horizontal Duct Conversion Kit. See
included installation instructions for conversion.
DAS Horizontal Conversions
(Select Modulating Gas Heat
Units)
For units with model number digit 10 = B, DAS system
conversion may be required:
• 6 to 12.5 ton units in B and C cabinets (with model
number digit 10 = B): conversion required to the DAS
pickup tubes for horizontal duct configurations.
• 12.5 to 25 ton units in D cabinet (with model number
digit 10 = B): no conversion required. The factory-
installed DAS system is applicable to both downflow
and horizontal.
Conversion to Horizontal — 6 Ton Low
Modulating Gas heat Y(S/H)K072***BL
Note: An elbow is not required for this conversion.
1. Remove vertical slide bracket screw.
2. Slide the vertical slide bracket down to expose the
holes in the vertical tube. See Figure 58, p. 48, Figure
59, p. 48, and Figure 60, p. 49.
3. Reattach bracket screw to secure vertical slide bracket
in new position.
Figure 58. DAS tubing factory installation for
downflow
Figure 59. DAS tubing after conversion to horizontal
Installation
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