5
2. Make proper consideration for the weather-tight
integrity of the roof and proper drainage of condensate.
3. To ensure proper condensate drainage, unit must be
installed in a level position.
4. Consideration should also be given to shade,
appearance and noise.
36"
36"
24"
PL
EN
UM
UNI
T
PL
AT
FOR
M
CU
RB
Figure 2
RIGGING
Rigging Details
WARNING
To prevent property damage, the unit should remain in an
uprght position during all rigging and moving operations. To
facilitate lifting and moving when a crane is used, place the
unit in an adequate cable sling.
CAUTION
If units are lifted two at a time, the fork holes on the
condenser end of the unit must not be used. Minimum fork
length is 42” to prevent damage to the unit; however, 48” is
recommended.
NOTE: Provisions for forks have been included in
the unit base frame. No other fork locations are
approved.
WARNING
To prevent possible equipment damage, property damage, per-
sonal injury or death, the following bullet points must be
observed when installing the unit.
Unit must be lifted by the four lifting holes located at the
base frame corners.
• Lifting cables should be attached to the unit with
shackles.
• The distance between the crane hook and the top of
the unit must not be less than 60”.
• Two spreader bars must span over the unit to prevent
damage to the cabinet by the lift cables. Spreader
bars must be of sufficient length so that cables do
not come in contact with the unit during transport.
Remove wood struts mounted beneath unit base
frame before setting unit on roof curb. These struts
are intended to protect unit base frame from fork lift
damage. Removal is accomplished by extracting the
sheet metal retainers and pulling the struts through
the base of the unit. Refer to rigging label on the unit.
Refer to the Roof Curb Installation Instructions for proper
curb installation. Curbing must be installed in compliance
with the National Roofing Contractors Association Manual.
Figure 3
WARNING
Do not, under any circumstances, connect return ductwork
to any other heat producing devices such as a fireplace
insert, stove, etc. Unauthorized use of such devices may
result in property damage, fire, carbon monoxide poisoning,
explosion, personal injury or death.
DUCTING
Ducting work should be fabricated by the installing
contractor in accordance with local codes. Industry
manuals may be used as a guide when sizing and
designing the duct system- such as NESCA (National
Environmental Systems Contractors Association, 1501
Wilson Blvd., Arlington, Virginia 22209).
The unit should be placed as close as possible to the
space to be air-conditioned allowing clearance dimensions
as indicated. Ducts should run as directly as possible
to supply and return outlets. Use of non-flammable
