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7
Installation and Application Information
PLACEMENT OF THE UNIT
The equipment must be installed in accordance with national
and local safety standards. If no local standards are applicable,
installation must be in accordance with national standards.
AIR operating equipment is designed to be installed OUTDOOR.
It is necessary for the equipment to have adequate ventilation, as
well as a free air inlet to allow proper air circulation, and to provide
access and space for equipment maintenance (see Figure 2).
For an optimal operation of the equipment, a correct connection
to the hydraulic network and the minimum water flow per minute
specified in the technical information sheet of the equipment is
required. As well as a correct connection to the electrical power
according to the electrical values of the technical information
sheet of the system.
Anti-vibration mounts must be installed between the frame of the
unit and the concrete base of the steel beams; for such installation,
use the dimensioning diagram attached in this installation manual.
The unit frame must be perfectly level during installation, if
necessary insert shims under the anti-vibration mounts.
To ensure the optimum performance of the unit once installed,
some instructions and precautions should be followed, such as:
• Ensure a strong and solid base to reduce noise and vibration.
• Avoid installing the equipment in areas that may be hazardous
during equipment maintenance, such as platforms without
guardrails, guide rails, or areas that do not meet the space
requirements around the unit.
• The installer is responsible for calculating the best position for
the unit. It is vitally important that the suggested clearances
are respected in order to provide adequate ventilation for the
condenser louvers.
• Avoid recirculation of hot air.
• Avoid lack of air supply to the air-cooled condenser. Failure
to comply with these conditions can result in increased
condenser pressure which in turn can lead to poor energy
efficiency and cooling capacity.
The noise generated by the unit is mainly due to the rotation of
fans and compressors. If the unit is properly installed, operated
and regularly maintained, the noise levels do not require any
special protective devices to work continuously and safely near
the equipment. In case of an installation with special noise
requirements, it may be necessary to install additional noise
reduction devices.
MOUNTING
CLEARANCE 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.
These areas must be open for service access. The minimum
service distance is as follows:
A.
Sides
• 4 fan models: Minimum of 1.2 m (4 ft.)
• 6 to 14 fan models: It is strongly recommended that a minimum
of 8 ft (2.4 m) be left on one side to allow for coil replacement.
Coils may be removed from the top, leaving a minimum of 4
ft (1.2 m) side clearance; however, unit performance may be
diminished.
B.
Control panel end
• All models: Minimum of 4 feet (1.2 meters).
C.
Opposite end of control panel
• 4-fan models: Minimum 8 feet (2.4 m) to remove coil.
• 6- to 14-fan models: 8 ft (2.4 m) minimum. Clearance may
be reduced to 4 ft (1.2 m) if side clearance is sufficient for
evaporator service and removal.
OPERATING SPACE REQUIREMENTS
Figure 2. Clearance service
Sufficient distance must be maintained between the unit and
adjacent walls or other units 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.
