Daikin DCG Series Service Instructions Manual page 23

PRODUCT DESIGN
R C I
OOF URB NSTALLATIONS
Curb installations must comply with local codes and should
be done in accordance with the established guidelines of the
National Roofing Contractors Association.
Proper unit installation requires that the roof curb be firmly
and permanently attached to the roof structure. Check for
adequate fastening method prior to setting the unit on the
curb.
Full perimeter roof curbs are available from the factory and are
shipped unassembled. Field assembly, squaring, leveling
and mounting on the roof structure are the responsibility of the
installing contractor. All required hardware necessary for the
assembly of the sheet metal curb is included in the curb
accessory.
T
O PREVENT POSSIBLE EQUIPMENT DAMAGE
,
PERSONAL INJURY OR DEATH THE FOLLOWING BULLET POINTS MUST BE
OBSERVED WHEN INSTALLING THE UNIT
•
Sufficient structural support must be determined prior to
locating and mounting the curb and package unit.
•
Ductwork must be constructed using industry guide-
lines. The duct work must be placed into the roof curb
before mounting the package unit. Our full perimeter
curbs include duct connection frames to be assembled
with the curb. Cantilevered type curbs are not available
from the factory.
•
Curb insulation, cant strips, flashing and general roofing
material are furnished by the contractor.
The curbs must be supported on parallel sides by roof
members. The roof members must not penetrate supply and
return duct opening areas as damage to the unit might occur.
NOTE: The unit and curb accessories are designed to
allow vertical duct installation before unit placement. Duct
installation after unit placement is not recommended.
A . T
LL CURBS LOOK SIMILAR O AVOID INCORRECT CURB POSITIONING
CHECK JOB PLANS CAREFULLY AND VERIFY MARKINGS ON CURB
. I
ASSEMBLY NSTRUCTIONS MAY VARY IN CURB STYLES AND SUPERCEDE
.
INFORMATION SHOWN
See the manual shipped with the roof curb for assembly and
installation instructions.
O :
NLY
WARNING
,
PROPERTY DAMAGE
.
CAUTION
48"
,
*In situations that have multiple units, a 48" minimum
clearance is required between the condenser coils.
Maintain an adequate clearance around the unit for safety,
service, maintenance, and proper unit operation. Leave a
clearance of 48" on all sides of the unit for possible compres-
sor removal or service access, and to ensure proper ventila-
tion and condenser airflow. Do not install the unit beneath any
obstruction. Install the unit away from all building exhausts
toinhibit ingestion of exhaust air into the unit's fresh-air
intake.
NOTE: If the 48" minimum is used on the control panel side
of a DCG unit, a flue extension (MF# 22-GX-02) needs to be
installed to prevent flue gas recirculation.
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
I
NFORMATION SHOWN
ELECTRICAL WIRING
HIGH VOLTAGE !
D
ISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT
. F
BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY
,
DAMAGE PERSONAL INJURY OR DEATH
CLEARANCES
48"
48"
UNIT CLEARANCES
CAUTION
,
DO NOT ATTEMPT TO SET UNIT ON CURB
.
WARNING
. M
ULTIPLE POWER SOURCES MAY
.
48"
.
23