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Installation and Application Information
CLEANING SERVICE
A. 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.
B. 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.
A. Control panel end
• All models: Minimum of 4 feet (1.2 meters).
A. 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.
Figure 2. Cleaning service
OPERATING SPACE REQUIREMENTS
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.
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The performance of the unit may be affected if the operating
clearance is not sufficient.
Case 1. Building or wall on one side of the unit
NOTES: Assumes a solid height wall higher than the unit.
Refer to case 4 for partial wall openings.
For Tandem 50 RT models, maintain a minimum of 4 feet from a
wall of any height.
For Tandem 100 RT models, maintain a minimum of 6 feet from a
wall of any height.
For Tandem 150 RT models, maintain a minimum of 8 feet from a
wall of any height.
Figure 3. Building or wall on one side of the unit
Case 2. Two units side by side
For models 050-150 , there should be a minimum of 4 feet
between two units placed side by side; however, performance
may be affected at this distance.
For models 175-250 , the minimum is 6 feet, since closing the
gap may cause recirculation of air and elevation of condenser
pressure. Assuming the requirement that one side have at least
8 ft of service clearance is met, the figures in Case 2 show the
performance adjustments as the distance between two units
increases.
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CAUTION
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