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Clearances
The unit must be installed with sufficient clearance for air to
enter the condenser coil, for air discharge and for servicing
access. See Table 4 for clearances.
NOTE: Additional clearance is required to remove the
compressors out the back of the unit, unless a means is
available to lift the compressor out through the top of
the unit.
Table 4: Minimum Clearances
Clearance Description
Overhead (Top)
Front
Rear
Left Side
Right Side
1
Bottom
1.In all installations where snow accumulates and winter oper-
ation is expected, additional height must be provided to
insure normal condenser airflow.
Do not permit overhanging structures or shrubs to
obstruct condenser air discharge.
Rigging
Exercise care when moving the unit. Do not remove any
packaging until the unit is near the place of installation. Rig the
unit by attaching chain or cable slings to the lifting holes
provided in the base rails. Spreader bars, whose length
exceeds the largest dimension across the unit, MUST be used
across the top of the unit.
When preparing to move the unit, always determine the center
of gravity (see Table 3 and Figure 1) of the unit in order to
equally distribute the weight. Slings connected to the
compressor end of a unit will usually have to be made shorter,
so the unit will lift evenly (see Figure 2).
Spreaders, longer than the largest dimension across the
unit must be used across the top of the unit.
Johnson Controls Unitary Products
Distance in Inches
120
36
36
30
30
0
Before lifting a unit, make sure that its weight is
distributed equally on the cables so that it will lift evenly.
Figure 2: Typical Rigging
Rig units by attaching chain or cable hooks to the holes
provided on the base rail. See Figure 7 for details on rigging
holes.
The length of the spreader bars must exceed the width of the
unit. Refer to Table 3 for unit weights.
NOTE: If planning to handle the 30-50 ton condenser with a
fork truck, use 1WS0408 skids.
If handling a unit equipped with a 1WS skid,
length of forks must be a minimum of 96". Fork
lengths less than 96" will not span the required
width of the skid and can cause damage to the
unit's base rails or condenser coils.
579884-BIM-A-0710
7
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