Installation
RT-SVX23F-EN 19
Foundation
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 1, p. 18 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. If anchoring is required, anchor the unit to the roof
with hold-down bolts or isolators. Check with a roofing
contractor for proper waterproofing.
Ductwork
Figure 14, p. 20 to Figure 19, p. 21 illustrate the supply and
return air openings as viewed form the rear of the unit.
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.
Table 2. Factory installed options (fiops)/accessory net weights (lbs)
(a),(b)
WSC036E-048E WSC060E WSC072E-090E WSC120E
Net Weight Net Weight Net Weight Net Weight
Accessory 3-4 Ton 5 Ton 6-7½ Ton 10 Ton
Barometric Relief 7 10 10 10
Belt Drive Option (3 phase only) 31 31 — —
Coil Guards 12 20 20 30
Economizer 26 36 36 36
Electric Heaters
(c)
15 30 30 40
Hinged Doors 10 12 12 12
Manual Outside Air Damper 16 26 26 26
Motorized Outside Air Damper 20 30 30 30
Oversized Motor 5 8 8 —
Powered Convenience Outlet 38 38 38 50
Powered Exhaust — 80 80 80
Roof Curb 61 78 78 89
Smoke Detector, Supply 5 5 5 5
Smoke Detector, Return 7 7 7 7
Through-the-Base Electrical 8 13 8 13
Unit Mounted Circuit Breaker 5 5 5 5
Unit Mounted Disconnect 5 5 5 5
(a)Weights for options not listed are <5 lbs.
(b)Net weight should be added to unit weight when ordering factory-installed accessories.
(c) Applicable to Heat Pump units only.
WARNING
Risk of Roof Collapsing!
Confirm with a structural engineer that the roof
structure is strong enough to support the combined
weight of the roof curb and the unit. Refer to Table 1,
p. 18 for typical unit and curb weights. Failure to ensure
proper structural roof support could cause the roof to
collapse, which could result in death or serious injury
and property damage.
To Next Page
Loading...
