Trane TSC060ED Installation, Operation And Maintenance Manual page 19

Before installing any roof curb, verify;
• it is the correct curb for the unit,
• it includes the necessary gaskets and hardware,
• the purposed installation location provides the
required clearance for proper operation,
• 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.
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 ensure proper condensate flow during
operation, as well as proper operation of the
condensate overflow switch (if equipped), 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.
Recommendations for installing the Supply Air and Return
Air ductwork joining the roof curb are included in the curb
instruction booklet. Curb ductwork must be fabricated and
installed by the installing contractor before the unit is set
into place.
Note: For sound consideration, cut only the holes in the
roof deck for the ductwork penetrations. Do not cut
out the entire roof deck within the curb perimeter.
If a Curb Accessory Kit is not used:
• The ductwork can be attached directly to the factory-
provided flanges around the unit's supply and return
air openings. Be sure to use flexible duct connections
at the unit.
• For "built-up" curbs supplied by others, gaskets must
be installed around the curb perimeter flange and the
supply and return air opening flanges.
RT-SVX37B-EN
Rigging
A Rigging illustration and Center-of-Gravity dimensional
data table is shown in Figure 12, p.
unit operating weights table before proceeding.
1. Remove all drill screws fastening wood protection to
metal baserail. Remove all screws securing wooden
protection to wooden top crate.
2. Remove Wooden Top Crate.
WARNING
Heavy Objects!
Do not use cables (chains or slings) except as shown.
Each of the cables (chains or slings) used to lift the unit
must be capable of supporting the entire weight of the
unit. Lifting cables (chains or slings) may not be of the
same length. Adjust as necessary for even unit lift.
Other lifting arrangements may cause equipment or
property-only damage. Failure to properly lift unit could
result in death or serious injury. See details below.
3. Rig the unit as shown in
adequate strength lifting slings to all four lifting
brackets in the unit base rail. Do not use cables, chains,
or slings except as shown.
4. Install a lifting bar, as shown in
protect the unit and to facilitate a uniform lift. The
minimum distance between the lifting hook and the
top of the unit should be 7 feet.
5. Test-lift the unit to ensure it is properly rigged and
balanced, make any necessary rigging adjustments.
6. Lift the unit enough to allow the removal of base fork
pocket protection components as shown in the
following figure.
Figure 17. Fork pockets
7. Down flow units; align the base rail of the unit with the
curb rail while lowering the unit onto the curb. Make
sure that the gasket on the curb is not damaged while
positioning the unit.
Installation
17. Refer to the typical
Figure 12, p. 17. Attach
Figure 12, p. 17, to
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