20 RT-SVX23D-EN
Installation
Roof Curb
DownflowThe roof curbs for these units consists of a “full perimeter” enclosure to support the unit.
Before installing any roof curb, verify;
1. That it is the correct curb for the unit,
2. That it includes the necessary gaskets and hardware,
3. That the purposed installation location provides the required clearance for proper operation.
4. Insure that the curb is level and square. The top surface of the curb must be true to assure an
adequate curb-to-unit seal.
WARNING
Combustible Materials!
Maintain proper clearance between the unit heat exchanger, vent surfaces and combustible
materials. Refer to unit nameplate and installation instructions for proper clearances. Improper
clearances could result in a fire hazard. Failure to maintain proper clearances could result in
death or serious injury or property damage.
5. Verify that appropriate materials were used in the construction of roof and ductwork.
Combustible materials should not be used in the construction of ductwork or roof curb that is
in close proximity to heater elements or any hot surface. Any combustible material on the inside
of the unit base should be removed and replaced with appropriate material.
Step-by-step curb assembly and installation instructions ship with each accessory roof curb kit.
Follow the instructions carefully to assure proper fit-up when the unit is set into place.
Note: To assure proper condensate flow during operation, the unit (and curb) must be level.
If the unit is elevated, a field constructed catwalk around the unit is strongly recommended to
provide easy access for unit maintenance and service.
Figure 11. WSC072A-WSC120A, WSC060E Horizontal Unit Supply & Return Air Openings
To Next Page
Loading...
