Roof Curb Post-Installation Checks; Roof Top Duct Connections; Rigging Details - Daikin DBC Series Installation Instructions Manual

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.
P
ROTRUSION
Inspect curb to ensure that none of the utility services (electric)
routed through the curb protrude above the curb.
I ,
F PROTRUSIONS EXIST DO NO ATTEMPT TO SET UNIT ON CURB

ROOF TOP DUCT CONNECTIONS

Install all duct connections on the unit before placing the unit on
rooftop.

RIGGING DETAILS

T
O PREVENT PROPERTY DAMAGE, THE UNIT SHOULD REMAIN IN AN UPRIGHT
POSITION DURING ALL RIGGING AND MOVING OPERATIONS.
LIFTING AND MOVING WHEN A CRANE IS USED, PLACE THE UNIT IN AN
ADEQUATE CABLE SLING.
D
O NOT LIFT UNITS TWO AT A TIME
BEEN INCLUDED IN THE UNIT BASE FRAME
72"
TO PREVENT DAMAGE TO THE UNIT
Provisions for forks have been included in the unit base frame. No
other fork locations are approved.
T
O 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.
CAUTION
WARNING
T
O FACILITATE
CAUTION
. P
ROVISIONS FOR FORKS HAVE
. M
INIMUM FORK LENGTH IS
.
WARNING
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
National 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.
.
W
HEN UNIT IS SUSPENDED
SCREWS ARE REMOVED
R
EMOVE FORK HOLE BRACKETS
OF UNIT BEFORE PLACING UNIT ONTO CURB
To assist in determining rigging requirements, unit weights are
shown as follows:
A
COMPRESSOR 1
Y
COMPRESSOR 2
B
X
CORNER & CENTER OF GRAVITY LOCATIONS
SEE CAUTION BELOW
6
CAUTION
,
BOARDS AND SHIPPING BRACE WILL DROP WHEN
. T , STAND CLEAR.
O PREVENT PERSONAL INJURY
,
BOARDS AND SHIPPING BRACE FROM BOTTOM
.
CG
C
D