Installation
18 RT-SVX37B-EN
Foundation
Horizontal Units
If the unit is installed at ground level, elevate it above the
snow line. Provide concrete footings at each support
location with a “full perimeter” support structure or a slab
foundation for support. Refer to Table 2, p. 17 for the unit’s
operating and point loading weights when constructing a
footing foundation.
If anchoring is required, anchor the unit to the slab using
hold down bolts or isolators. Isolators should be installed
to minimize the transmission of vibrations into the
building.
For rooftop applications, ensure the roof is strong enough
to support the combined unit and support structural
weight. Refer to Table 2, p. 17 for the unit operating
weights. If anchoring is required, anchor the unit to the
roof with hold-down bolts or isolators.
Check with a roofing contractor for proper waterproofing
procedures.
Ductwork
Figure 13, p. 18 to Figure 14, p. 18 illustrate the supply and
return air openings as viewed from the rear of the unit.
Figure 15 and Figure 16 illustrate the supply and return air
openings in a downflow configuration.
Elbows with turning vanes or splitters are recommended
to minimize air noise due to turbulence and to reduce static
pressure.
When attaching the ductwork to the unit, provide a water
tight flexible connector at the unit to prevent operating
sounds from transmitting through the ductwork.
All outdoor ductwork between the unit and the structure
should be weather proofed after installation is completed.
Roof Curb
Down flow
The roof curbs for these units consists of a “full perimeter”
enclosure to support the unit just inside of the unit base
rail.
Figure 13. 5 ton units - Horizontal supply & return air
openings
Figure 14. 6 - 10 ton units - Horizontal supply & return
air openings
Figure 15. 5 ton units - Down flow supply & return air
openings w/ through the base utilities
Figure 16. 6 - 10 ton units - Down flow supply & return
air openings w/ through the base utilities
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