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PRODUCT DESIGN
6
Roof Curb Installations Only:
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
,
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
,
THE
FOLLOWING
BULLET
POINTS
MUST
BE
OBSERVED
WHEN
INSTALLING
THE
UNIT
.
WARNING
•
Sufficient structural support must be determined prior to
locating and mounting the curb and package unit.
•
Ductwork must be constructed using industry guidelines.
The duct work must be placed into the roof curb before
mounting the package unit. Our full perimeter curbs in-
clude 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
LL
CURBS
LOOK
SIMILAR
. T
O
AVOID
INCORRECT
CURB
POSITIONING
,
CHECK
JOB
PLANS
CAREFULLY
AND
VERIFY
MARKINGS
ON
CURB
ASSEMBLY
. I
NSTRUCTIONS
MAY
VARY
IN
CURB
STYLES
AND
SUPERCEDE
INFORMATION
SHOWN
.
CAUTION
See the manual shipped with the roof curb for assembly and
installation instructions.
CLEARANCES
75"
48"
48"
6"
36" MINIMUM
ROOF OVERHANG
*75" for DBG models
*In situations that have multiple units, a 48" minimum
clearance is required between the condenser coils.
UNIT CLEARANCES
Adequate clearance around the unit should be kept for safety,
service, maintenance, and proper unit operation. A 75" clear-
ance on the non-service side of the unit is required to facilitate
possible blower assembly, shaft, wheel replacement and coil
removal. *DBG ONLY- A 75" Clearance on the service is re-
quired for removal of the gas heat exchanger.
This unit must
not be installed beneath any obstruction. This unit should be
installed remote from all building exhausts to inhibit ingestion
of exhaust air into the unit’s fresh air intake.
Protrusion
Inspect curb to ensure that none of the utility services (electric)
routed through the curb protrude above the curb.
I
F
PROTRUSIONS
EXIST
,
DO
NOT
ATTEMPT
TO
SET
UNIT
ON
CURB
.
I
NFORMATION
SHOWN
.
CAUTION
ELECTRICAL WIRING
HIGH VOLTAGE !
D
ISCONNECT
ALL
POWER
BEFORE
SERVICING
OR
INSTALLING
THIS
UNIT
. M
ULTIPLE
POWER
SOURCES
MAY
BE
PRESENT
. F
AILURE
TO
DO
SO
MAY
CAUSE
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
.
WARNING
Summary of Contents for DBG Series
Page 51: ...51 ACCESSORIES GAS ELECTRIC...
Page 52: ...ACCESSORIES 52 GAS ELECTRIC...
Page 53: ...53 ACCESSORIES...
Page 54: ...ACCESSORIES 54...
Page 95: ...95 DBC COMMERCIAL 15 25 Ton Packaged Air Conditioner Unit WIRING DIAGRAMS...
Page 100: ...100 DBG COMMERCIAL 15 25 Ton Packaged Gas Electric Unit WIRING DIAGRAMS...