Daikin DFC Series, Installation Instructions Manual

Page: 6 / 52

6
ROOF CURB INSTALLATION
ROOF CURB POST-INSTALLATION CHECKS
After installation, check the top of the curb, duct connection frame
and duct flanges to make sure gasket has been applied properly.
Gasket should be firmly applied to the top of the curb perimeter,
duct flanges and any exposed duct connection frame. If gasket is
loose, re-apply using strong weather resistant adhesive.
Protrusion
Inspect curb to ensure that none of the utility services (electric)
routed through the curb protrude above the curb.
CAUTION
If protrusions exist, do not attempt to set unit on curb.
Information shown.
ROOF TOP DUCT CONNECTIONS
Install duct connections on the roof curb before placing the unit
on the rooftop.
NOTE: If duct is to be fasten to the roof curb the fasteners need to
be installed horizontally to allow the unit to be set flat on the curb.
RIGGING DETAILS
WARNING
To prevent property damage, the unit should remain in an
upright 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
Do not lift units two at a time. Provisions for forks have
been included in the unit base fram. Minimum fork length is
72” to prevent damage to the unit.
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,
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.
• 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.
Important:
If using bottom discharge with roof curb, ductwork
should be attached to the curb prior to installing the unit. Ductwork
dimensions are shown in Roof Curb Installation Instructions.
Refer to the Roof Curb Installation Instructions for proper curb
installation. Curbing must be installed in compliance with the Na -
tional Roofing Contractors Association Manual.
Lower unit carefully onto roof mounting curb. While rigging unit,
center of gravity will cause condenser end to be lower than supply
air end.
DFG