6
CAUTION
To avoid possible personal injury, a safe, flat surface for
service personnel should be provided.
WARNING
To prevent possible equipment damage, property damage,
personal 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. See Figure 4 - Rigging.
•
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 into 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 forklift
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.
Rigging
Figure 4
CIRCULATING AIR AND FILTERS
Airflow Conversion
Units can easily be converted from horizontal to down
discharge air flow delivery. See Figure 5A - Horizontal
Flow Duct Cover Installation and Figure 5B - Downflow
Duct Cover Installation. In down discharge or high static
installations, the installer should measure the total external
static and review the blower performance charts before
performing the installation. In some installations it will be
necessary to change the blower speed to provide proper
air flow.
Horizontal Air Flow
Single phase models are shipped without horizontal duct
covers. If needed, these kits may be ordered through
Daikin’s Service Parts department.
REMOVE THESE COVERS
FOR HORIZONTAL DUCT
APPLICATIONS
Horizontal Flow Duct Cover Installation
Figure 5A
Down Discharge Applications
Cut insulation around bottom openings and remove panels
from the bottom of the unit, saving the screws holding the
panels in place.
Remove these panels
for downflow duct applications
Downflow Duct Cover Installation
Figure 5B
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., Arlington, Virginia 22209).
The unit should be placed as close as possible to the
space to be air-conditioned allowing clearance dimensions
