SolutionAir GRW, Ручная установка

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GRW
Installation
3
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GRW - Manual
Mechanical Installation
Location
GRW units are approved for both indoor and outdoor
installations.
The GRW unit is designed for complete field serviceability
including the removal of evaporator and condenser coils.
Also, the air-cooled condensers, if equipped, require clear
unfettered airflow for proper operation. The submittals
include recommended service areas for these features,
these areas should be accessible, open, and free of other
equipment.
In addition, for roof top installations, consideration should
be made to ensure that normal service traffic to the unit
will not cause damage to the roof system. If the equipment
is located on a sloped roof or a raised structure, the
platform should be sufficiently large to allow for the unit to
be safely serviced.
Clearances
The GRW unit is designed to be field-serviceable, which
includes the coils, filters, fans/motors, dampers, and
electronics. Refer to the submittal engineering drawings for
the locations of access doors and safety/service areas, and
ensure there is sufficient clearance for safety, inspection,
and service.
Roof Curb or Base
GRW units can be installed on a concrete housekeeping
pad, sleepers or a roof curb. The unit must be adequately
supported with either field supplied sleepers or structural
metal. Details of the required support can be found in the
submittals. Make sure that the unit supports are the correct
dimensions and that they are flat and level.
Check that the housekeeping pad is the correct dimensions
for the unit and that it is flat and level. If there is an external
condensate drain check that there is enough height for the
required condensate traps and that a means of removing
the condensate is located nearby.
Generally the curb is shipped in advance of the unit
delivery. It should be installed along with any required
ductwork prior to unit installation. Where a roof curb has
been supplied in knocked-down condition, absolute care
must be taken to make sure that all corners are square, and
that finished dimensions exactly match those provided on
the drawings. If this is not done, problems could arise with
the installation and seal of the unit to the curb.
First insure that the top of the curb is level and flat, shim
the curb to the roof deck as required. Then, check diagonal
dimensions prior to securing the curb to ensure that
dimensional integrity has been maintained during shipping.
Finally, complete roofing in accordance with accepted
roofing practices.
Prior to the installation of the unit, check that the curb
is the correct dimensions for the unit and that the curb
profile is correct (this is especially important if the curb
is not supplied by SolutionAir). Curb ductwork and
condensate drains that pass down through the curb must
be installed by installing contractor prior to unit placement.
Gasketing or other forms of sealant must be used around
the curb perimeter and at the duct connections. When
the curb is supplied by SolutionAir, a neoprene gasket is
included. Prior to the installation of the unit, secure the
gasket to the mating surface of the curb by peeling the
backing off the gasket material and applying adhesive-side
down.
NOTE: To minimize sound transmission, only cut openings
in roof deck for ductwork penetrations. Do not cut out the
entire roof deck within in the curb perimeter.