Unit Isolation; Spring Isolators - Trane CAUC-C80 Installation Operation & Maintenance

Rigging
A Rigging illustration and Center-of-Gravity dimensional
data table is shown in Figure 3-3. Refer to the typical unit
operating weights table before proceeding.
1. Rig the condensing unit as shown in Figure 3-3. Attach
adequate strength lifting slings to all four lifting brackets
in the unit base rail. Do not use cables, chains, or slings
except as shown.
2. Install spreader bars, as shown in Figure 3-3, to protect
the unit and to facilitate a uniform lift. The minimum dis-
tance between the lifting hook and the top of the unit
should be 7 feet.
3. Test-lift the unit to ensure it is properly rigged and bal-
anced, make any necessary rigging adjustments.
4. Lift the unit and position it into place.

Unit Isolation

To minimize unit sound and vibration transmission, one of
the following installation methods should be used:
1. Install the unit directly on an isolated (detached) concrete
pad or on isolated concrete footings located at each unit
load point.
2. Install the optional spring isolators at each mounting lo-
cation. Refer to the following "Spring Isolator" section.
Figure 3-4
Typical Spring Isolator Selection & Location
Fin
Unit Size Mat'l. Location 1
C80 AL CP-1D-900
CU CP-1D-900
D10 AL CP-1D-900
CU CP-1D-1200
D12 AL CP-1D-1200
CU CP-1D-1360
Note:
1. Mounting locations correlate with those shown in point loading illustration.
2. The spring is marked with the full spring ID part # (ie CP-1D-900)
If the isolator is color coded, there is a painted mark on each spring as follows;
CP-1D-1200 = gray
CP-1D-900 = dark green
3. Refer to the "Spring Isolator" section, step 4, for proper clearance.
Spring Isolator Part Number @ Mounting Location
2 3
CP-1D-900 CP-1D-900
CP-1D-900 CP-1D-900
CP-1D-900 CP-1D-900
CP-1D-1200 CP-1D-1200
CP-1D-900 CP-1D-900
CP-1D-1200 CP-1D-1360
CP-1D-1360 = white
Installation (Continued)

Spring Isolators

Install the spring isolators at each unit mounting (load)
point, using the following procedure:
1. Elevate the unit (one side at a time) to allow access to
the base rail mounting holes.
Note: Use solid type blocks, i.e. 4" X 4" wood
blocks or similar material to prevent collapsing.
Keep hands and other body limbs clear of elevated
base rail while installing isolators to prevent
personal injury.
2. Align the mounting holes in the base rail of the unit with
the positioning pin in the top of the appropriate isolator.
Refer to Figure 3-4 for the appropriate isolator for each
load point.
3. Position the isolator to allow access to the mounting
holes in the base of the isolator.
4. Lower the unit onto the isolator. The positioning pin on
the isolator must engage into the hole of the base rail.
The clearance between the upper and lower isolator
housings should be approximately 1/4 to 1/2 inch. Refer
to Figure 3-4. A clearance greater than 1/2 inch indicates
that shims are required to level the unit. Refer to the
"Leveling the Unit" section.
5. Make minor clearance adjustments by turning the isola-
tor leveling bolt (Figure 3-4) clockwise to increase the
clearance and counterclockwise to decrease the clear-
ance. If proper isolator clearance cannot be obtained by
turning the leveling bolt, level the isolators themselves.
A 1/4 inch variance in elevation is acceptable.
4 5
CP-1D-900 CP-1D-900
CP-1D-900 CP-1D-900
CP-1D-900 CP-1D-900
CP-1D-1200 CP-1D-1200
CP-1D-900 CP-1D-900
CP-1D-1200 CP-1D-1360
12
6 7
CP-1D-900 CP-1D-900
CP-1D-900 CP-1D-900
CP-1D-900 CP-1D-900
CP-1D-1200 CP-1D-1200
CP-1D-900 CP-1D-900
CP-1D-1200 CP-1D-1360
8
CP-1D-900
CP-1D-900
CP-1D-900
CP-1D-1200
CP-1D-900
CP-1D-1200