3
513 01 3402 02
UNIT STRUCTURAL DAMAGE HAZARD
Failure to follow this caution may result in property
damage
Ensure there is sufficient clearance for saw blade
when cutting the outer horizontal flange of the roof
curb so there is no damage to the roof or flashing.
CAUTION
!
Slab Mount
Place the unit on a solid, level concrete pad that is a minimum of
4 in. (102 mm) thick with 2 in. (51 mm) above grade (See
FIGURE 2). The slab should extend approximately 2 in. (51 mm)
beyond the casing on all 4 sides of the unit. Do not secure the
unit to the slab except when required by local codes.
FIGURE 2
Slab Mounting Detail
OPTIONAL
RETURN
AIR
OPENING
OPTIONAL
SUPPLY
AIR
OPENING
EVAP. COIL
COND. COIL
2˝
(50.8mm)
Step 3 — Provide Clearances
The required minimum service clearances are shown in
FIGURE 3 and FIGURE 4. Adequate ventilation and outdoor air
must be provided. The outdoor fan draws air through the outdoor
coil and discharges it through the top fan grille. Be sure that the
fan discharge does not recirculate to the outdoor coil. Do not
locate the unit in either a corner or under an overhead
obstruction. The minimum clearance under a partial overhang
(such as a normal house overhang) is 48 in. (1219 mm) above
the unit top. The maximum horizontal extension of a partial
overhang must not exceed 48 in. (1219 mm).
IMPORTANT
: Do not restrict outdoor airflow. An air restriction at
either the outdoor
−
air inlet or the fan discharge may be
detrimental to compressor life.
Do not place the unit where water, ice, or snow from an
overhang or roof will damage or flood the unit. Do not install the
unit on carpeting or other combustible materials. Slab
−
mounted
units should be at least 4 in. (102 mm) above the highest
expected water and runoff levels. Do not use unit if it has been
under water.
Step 4 — Rig and Place Unit
Rigging and handling of this equipment can be hazardous for
many reasons due to the installation location (roofs, elevated
structures, etc.).
Only trained, qualified crane operators and ground support staff
should handle and install this equipment.
When working with this equipment, observe precautions in the
literature, on tags, stickers, and labels attached to the
equipment, and any other safety precautions that might apply.
Training for operators of the lifting equipment should include, but
not be limited to, the following:
1. Application of the lifter to the load, and adjustment of the
lifts to adapt to various sizes or kinds of loads.
2. Instruction in any special operation or precaution.
3. Condition of the load as it relates to operation of the lifting
kit, such as balance, temperature, etc.
Follow all applicable safety codes. Wear safety shoes and work
gloves.
Inspection
Prior to initial use, and at monthly intervals, all rigging shackles,
clevis pins, and straps should be visually inspected for any
damage, evidence of wear, structural deformation, or cracks.
Particular attention should be paid to excessive wear at hoist
hooking points and load support areas. Materials showing any
kind of wear in these areas must not be used and should be
discarded.
UNIT FALLING HAZARD
Failure to follow this warning could result in personal
injury or death.
Never stand beneath rigged units or lift over people.
!
WARNING
1. Leave top shipping skid on the unit for use as a spreader
bar to prevent the rigging straps from damaging the unit. If
the skid is not available, use a spreader bar of sufficient
length to protect the unit from damage.