Trane CCRC 20, Installation, Operation And Maintenance Manual

Page: 14 / 32

14 CXRC-SVX01J-EN
Installation Preparation
Before installing the unit, perform the following
procedure to ensure proper unit operation.
1. Position the unit and skid assembly in its final
location.
2. Test lift the unit to determine exact unit balance and
stability before hoisting it to the installation
location. Refer to the section,
“Unit Handling
Procedure,” p. 13 , for proper rigging procedures
and cautions.
3. Remove the skids from under the unit. Refer to the
section, Skid Removal in the Installation, Operation,
and Maintenance Manual, SCXF-SVX01. If internal
damage is found, file a claim immediately to the
delivering carrier.
4. Remove the protective shipping covers from the
unit.
5. Verify isolators are properly tightened for
operation. Refer to the section, “Unit Isolation,” p.
14 .
Unit Isolation
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The standard unit comes with 6”x 6”x 3/8” thick
isolator pads. Place these under the unit in the
locations shown in
Figure 13, p. 15 through Figure 15,
p. 16 .
Spring Isolators
Unit mounting locations are shown in Figure 13, p. 15
through Figure 15, p. 16 . Operating weights and weight
loading at each mounting location are provided in
Table 3, p. 15 . In addition, isolator placement
instructions are placed in the control panel with other
unit documentation. Isolators are identified by spring
color and by the isolator part number. All units utilize
CP-1-28 green isolators (20–32 ton units use 4 isolators
per unit, 35-40 ton units use 6, and 50–60 ton units use
8). Install spring isolators at each unit mounting point
using the following procedure:
1. Bolt the isolators to the mounting surface using the
mounting slots in the isolators base plate. Do not
fully tighten the isolators mounting bolts at this
time.
2. Set the unit on the isolators. The isolator
positioning pins must register in the unit mounting
holes. See
Figure 13, p. 15 through Figure 15, p. 16
for locations.
3. Ensure clearances between upper and lower
isolator housings are between 1/4” to 1/2”. Refer to
the isolator detail in
Figure 12, p. 15 . A clearance of
over 1/2” requires shims to level the unit. Refer to
the section,
“Leveling the Unit,” p. 16 .
4. Make minor clearance adjustments by turning the
isolator leveling bolt clockwise to increase
clearance and counterclockwise to decrease
clearance.
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