Roof Curb - Trane WSC036E Installation, Operation And Maintenance Manual

Figure 18. Heat pumps - 5-7½ ton - downflow airflow
supply/return - through-the-base utilities
Note: All dimensions are in inches/millimeters.
Figure 19. Heat pump - 10 ton standard efficiency -
downflow airflow supply/return through-
the-base utilities
Note: All dimensions are in inches/millimeters.
3 5/8"
92 MM
9 7/8"
251 MM
17 1/2"
17 1/2"
444 MM
444 MM
4"
102 MM
Return Supply
33"
32 1/8"
838 MM
816 MM
THROUGH THE
BASE ELECTRICAL
THROUGH THE
BASE CONDENSATE
4 1/8"
104 MM
27 5/8"
701 MM

Roof Curb

The roof curbs for these units consists of a "full perimeter"
enclosure to support the unit just inside of the unit base
rail.The 7½ - 10 ton high efficiency units contain a support
base alignment rail and will extend past the end of the roof
curb as shown in figures below.
Before installing any roof curb, verify;
1. It is the correct curb for the unit,
2. The necessary gaskets and hardware are included,
3. 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.
RT-SVX23F-EN
2 3/4"
71 MM
5 7/8"
42 3/16"
149 MM
1072 MM
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
combustible materials catching on fire. 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.
Figure 20. View for base to roof curb alignment
WSC120E on 50 x 84 roof curb
Base Alignment Bracket
6 3/8"
163 MM
Figure 21. View for base to roof curb alignment
WSC120E on 60 x 84 roof curb
Installation
WARNING
21