Daikin DTC Series Installation Instructions Manual page 4

damage. Give this booklet to the user and explain it's provisions.
The user should retain these instructions for future reference.
• For proper operation and condensate drainage, the unit
must be mounted level.
• Do not locate the unit in an area where the outdoor air
will be frequently contaminated by compounds containing
chlorine or fluorine. Common sources of such compounds
include swimming pool chemicals and chlorine bleaches,
paint stripper, adhesives, paints, varnishes, sealers,
waxes (which are not yet dried) and solvents used during
construction and remodeling. Various commercial and
industrial processes may also be sources of chlorine/
fluorine compounds.
• To avoid possible illness or death of the building
occupants, do NOT locate outside air intake device
(economizer, manual fresh air intake, motorized fresh
air intake) too close to an exhaust outlet, gas vent
termination, or plumbing vent outlet. For specific distances
required, consult local codes.
• Allow minimum clearances from the enclosure for
fire protection, proper operation, and service access
(see Unit Clearances). These clearances must be
permanently maintained.
• When the unit is heating, the temperature of the return air
entering the unit must be a minimum of 55°F.
Ground Level Installations Only:
• When the unit is installed on the ground adjacent to the
building, a level concrete (or equal) base is recommended.
Prepare a base that is 3" larger than the package unit
footprint and a minimum of 3" thick.
• The base should also be located where no runoff of water
from higher ground can collect in the unit.
• Roof top Installations Only:
• To avoid possible property damage or personal injury, the
roof must have sufficient structural strength to carry the
weight of the unit(s) and snow or water loads as required
by local codes. Consult a structural engineer to determine
the weight capabilities of the roof.
•
The unit may be installed directly on wood floors or on
Class A, Class B, or Class C roof covering material.
•
To avoid possible personal injury, a safe, flat surface for
service personnel should be provided.
• Adequate clearances from the unit to any adjacent
public walkways, adjacent buildings, building openings
or openable windows must be maintained in accordance
with National Codes.
Unit Precautions
• Do not stand or walk on the unit.
•
Do not drill holes anywhere in panels or in the base frame
of the unit (except where indicated). Unit access panels
provide structural support.
• Do not remove any access panels until unit has been
installed on roof curb or field supplied structure.
• Do not roll unit across finished roof without prior approval
of owner or architect.
• Do not skid or slide on any surface as this may damage
unit base. The unit must be stored on a flat, level surface.
Protect the condenser coil because it is easily damaged.
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.
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.
All curbs look similar. To avoid incorrect curb
positioning, check job plans carefully and verify
markings on curb assembly. Instructions may vary in
curb styles and supersededs information shown.
See the manual shipped with the roof curb for assembly and
installation instructions.
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WARNING
CAUTION