Daikin M Series, Руководство по установке

Страница: 6 / 28

6
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.
WARNING
To prevent possible equipment damage, property
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
guidelines. 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.
See the manual shipped with the roof curb for assembly
and installation instructions.
CLEARANCES
Unit Clearances
*In situations that have multiple units, a 36” minimum
clearance is required between the condenser coils.
Adequate clearance around the unit should be kept for
safety, service, maintenance, and proper unit operation. A
clearance of 48” is recommended on all sides of the unit
to facilitate possible parts replacement, to allow service
access and to insure proper ventilation and condenser
airflow. The top of the unit should be completely
unobstructed. If units are to be located under an overhang,
there should be a minimum of 48” clearance and provisions
made to deflect the warm discharge air out from the
overhang. The unit should be installed remote from all
building exhausts to inhibit ingestion of exhaust air into the
unit fresh air intake.
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.
ROOF TOP DUCT CONNECTIONS
Roof Top Installation
1. Before locating the unit on the roof, make sure that
the strength of the roof and beams is adequate to
support the weight involved. (See specification
sheet for weight of units). This is very important and
the installer’s responsibility.
2. Make a proper consideration for weather-tight
integrity of the roof and proper drainage of
condensate.