035-18518-001-B-0703
6
Unitary Products Group
Footers under the slab that extend below the frost line
is recommended. Any strain on the refrigerant lines
may cause a refrigerant leak. The slab should not be
tied to the building foundation because noise and vibra-
tion will telegraph into your structure.
A unit can also be supported by concrete piers. These
piers should (1) extend below the frost line, (2) be
located under the unit's four corners, and (3) be sized
to carry the entire unit weight. Refer to Figure 1 and
Table 1 for the center of gravity and unit weight.
RIGGING AND HANDLING
Exercise care when moving the unit. Do not remove
any packaging until the unit is near the place of installa-
tion.
Rig the unit by attaching nylon straps with hooks to the
lifting holes provided in the base rails. Spreaders,
whose length exceeds the largest dimension across
the unit, MUST be used across the top of the unit if the
rigging height above the top of the unit is less than 5
feet. See Figure 2.
BEFORE LIFTING A UNIT, MAKE SURE THAT ITS
WEIGHT IS DISTRIBUTED EQUALLY ON THE
STRAPS SO THAT IT WILL LIFT EVENLY.
LENGTH OF FORKS MUST BE A MINIMUM OF 42"
for 7-1/2 ton units or a MINIMUM OF 54" for 10 ton
units when lifting across the long dimension.
Remove the nesting brackets from the four corners on
top of the unit. All screws that are removed to take
these brackets off must be replaced on the unit.
Care should be taken to protect the unit from
tampering and unauthorized persons from
injury. Screws on access panels will prevent
casual tampering. Additional safety precau-
tions such as fences around the unit or locking
devices on the panels may be advisable.
Check local authorities for safety regulations.
FIGURE 1 - CENTER OF GRAVITY
Unit
Dim (in.)
A
B
C
D
7-1/2 Ton
70-1/8
32
29-5/8
16-1/2
Do not use straps under the unit or through the
fork lift slots for lifting purposes. Sharp metal
edges can damage the straps and could result
in personal injury or equipment damage.
FIGURE 2 - TYPICAL RIGGING
Before lifting the unit, make sure that its
weight is distributed equally on the cables so
that it will lift evenly.
SPREADER
BAR
LIFTING
HOLES
