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8
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CAUTION
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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.
Figure 3. Building or wall on one side of the unit.
Case 2. Two units side by side.
For models 3-10 , there must be a minimum of 4 feet between two
units placed side by side; however, performance may be affected
at this distance. Assuming the requirement that one side have
at least 8 feet of service clearance is met, the figures in Case 2
show the performance adjustments as the distance between two
units increases.
Figure 4. Two units side by side.
Installation and Application Information
Figure 5. Three or more units, side by side.
Case 3. Three or more units, side by side.
For all models, there must be a minimum distance between units
placed side by side; however, performance may be affected at
this distance.
Case 4. 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 5:
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.
Case 5. Installation of the pit.
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 grille material and installation design should be strong
enough to prevent such accidents, but should provide plenty of
open area to avoid 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 design engineer to
avoid the risk of an accident.
