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Installation and Application Information
The use of spring isolators is recommended for roof applications.
For ground level applications, install the unit on a solid base that
will not settle.
Use a one-piece concrete slab with a foundation extended below
the frost line.
Ensure that the foundation is level to within 13 mm over its entire
length and width.
The foundation must be strong enough to support the weight of
the unit ( see "Dimension and Weight - Packaged Unit" on page
15.)
The addition of neoprene pads (customer supplied) under the unit
allows water to drain from inside the frame, which can act as a
dam. Installing optional spring or rubber isolators in the shear can
also aid drainage, see page 19 for information.
MOUNTING
The inside of the base rail is open to allow access to secure
mounting bolts, etc. Mounting location dimensions are indicated
on the dimensional drawing on page 15 . All compressor bolts,
rubber, grommets and fasteners should be left in place in the
base. None of these fasteners are considered "temporary
shipping bolts".
CLEANING SERVICE
The control panels are located at the end of the chiller and require
a minimum clearance of 1.2 meters in front of the panels. The
compressor, filter-driers and line shutoff valves are accessible on
each side or end of the unit. Do not block access to the sides or
ends of the unit with piping or ductwork.
OPERATING SPACE REQUIREMENTS
Sufficient distance must be maintained between the unit and
adjacent walls to allow the required airflow from the unit to reach
the coils. Failure to do so will reduce capacity and increase
energy consumption.
The clearance requirements shown are a general guide and
cannot take into account all scenarios. Factors such as prevailing
winds, additional equipment within the space, outside air
temperature and many other factors may require more clearance
than shown. Additional clearances may be required under certain
circumstances.
The graphs on the following pages indicate the minimum
clearance for different types of installations and also the reduction
in capacity and increase in power if a smaller space is used. The
graphs are based on individual cases and should not be combined
with other scenarios.
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CAUTION
The performance of the unit may be affected if the operating
clearance is not sufficient.
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Figure 2. Building or wall on one side of the unit.
Case 1. Open protection walls
Decorative walls are often used to help conceal a unit, either on
the ground or on the roof. Whenever possible, design these walls
so that the combination of their open area and distance to the unit
does not require a performance adjustment.
If the percentage of wall openness is less than recommended for
the distance to the unit, it should be considered a solid wall. The
wall height is assumed to be equal to or less than the height of the
unit when mounted on its base bracket.
If the wall height is greater than the unit height, (refer to Case 2:
Pit Installation) for performance adjustment factors. The distance
from the sides of the unit to the side walls must be sufficient for
service, such as opening the control panel doors.
In the case of uneven wall separation, the distance from the unit
to each wall can be averaged as long as no distance is less than
4 feet. Values are based on walls on all four sides.
Pit installation
Case 2.
Pit installations can cause operating problems due to recirculation
and air restriction and require that sufficient air separation be
provided, safety requirements be met, and service access be
provided.
A solid wall surrounding a unit is substantially a pit and this datum
should be used. Sometimes a steel grating is used to cover a pit
to prevent accidental falls or trips into the pit.
The grate material and installation design should be strong
enough to prevent such accidents, but should provide plenty of
open area to prevent recirculation problems.
Have the Clima Flex sales representative review the installation
of any pit prior to installation to ensure that it has sufficient airflow
characteristics and is approved by the facility's design engineer to
avoid the risk of an accident.
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