Daikin GYEQ20AN Service Manual page 46

Installation Work Manual
6
Installation Foundation for Outdoor Units
Notes on Foundation and Installation Work
Refer to the foundation drawings to execute foundation work for the outdoor unit; the foundation must be strong
enough to support the weight of the outdoor unit and more than 100 mm higher than the floor surface to protect
it from rainwater and dust. Provide a drain ditch around the foundation and give it a 1/50 downward pitch to
lead the drain to the drain port.
WARNING
CAUTION
35
To prevent the outdoor unit from falling over, install it on a hard and level
foundation. Refer to the earthquake and storm safety section of the facility design
manual for information regarding anchor bolt section.
If anti-seismic installation is required, reconsider the foundation dimensions and
fixing bolts according to the designated anti-seismic design standards.
When installing in locations with little soil bearing capacity (e.g. sand, clay or
loam), be sure to do ground reinforcement work.
When installing the outdoor unit on a rooftop or other high places, provide a ladder
and handrails on the path as well as fences and handrails around the unit in order
to prevent falls.
When installing the outdoor unit to a rooftop,
veranda or other exposed location in a residential
areas where noise and vibration can be a problem,
use a vibration proof stand.
Select the vibration proof grade and specification
depending on the purpose and environment of the
direct room. When installing in locations where
noise and vibration can be a problem, exercise
sufficient consideration for the surrounding.
Adjust the installation surface of the vibration proof stand with a liner so that it
becomes a level surface.
For the installation of a vibration proof stand, refer to the vibration proof stand
instruction.
Make sure to check the dimensions of the outdoor unit at the time of installation.
The standard blend ratio of concrete must be 1 part cement, 2 parts sand, and 4
approximately 300 mm.
The foundation surface must be leveled with a finishing coat of mortar. The end
face of the foundation must be chamfered.
If the foundation is put on a concrete floor, macadam is not necessary, but the
concrete surface should be rough.
Provide a drain ditch around the foundation to complete draining from the unit.
If the foundation is provided on the rooftop, special care must be given to the
strength of the floor and waterproofing must be ensured.
In the case of the elevated pad installation, take the elevated pad intervals and the
strength of steel material into account. Install so that the deflection of steel
material is 1/500 or below the elevated pad intervals, and the deflection is a
maximum 2 mm or below.
6 Installation Foundation for Outdoor Units
Prepare a
drain ditch
around the
foundation.
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0FGHP-EN0801 DGJ002
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