Rigging - Trane WSC036E Installation, Operation And Maintenance Manual

Installation
Table 3. Clearance required from duct to combustible
surfaces
Clearance required from duct to
Model Number combustible surfaces (inches)
WSC036E
WSC048E
WSC060E
WSC072E
WSC090E
WSC120E
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, 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:
a. 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.
b. For "built-up" curbs supplied by others, gaskets
must be installed around the curb perimeter flange
and the supply and return air opening flanges.

Rigging

A Rigging illustration and Center-of-Gravity dimensional
data table is shown in Figure 13, 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.
On 7½-10 ton high efficiency units, remove wire ties
from outdoor grill.
2. Remove wooden top crate.
22
0
0
0
1
1
1
18. Refer to the typical
WARNING
Heavy Objects!
Ensure that all the lifting equipment used is properly
rated for the weight of the unit being lifted. Each of the
cables (chains or slings), hooks, and shackles 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 could cause
equipment or property damage. Failure to follow
instructions above or properly lift unit could result in
unit dropping and possibly crushing operator/
technician which could result in death or serious injury.
WARNING
Improper Unit Lift!
Test lift unit approximately 24 inches to verify proper
center of gravity lift point. To avoid dropping of unit,
reposition lifting point if unit is not level. Failure to
properly lift unit could result in unit dropping and
possibly crushing operator/technician which could
result in death or serious injury and possible equipment
or property-only damage.
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 figures.
7. When 10 ton units are installed on smaller existing roof
curb (50"x84") for replacement applications, do not
remove alignment bracket.This bracket helps assure
proper alignment of duct openings.
Figure 13, p. 18. Attach
Figure 13, p. 18, to
RT-SVX23F-EN