Ducting placement – Bird Technologies DA40 UHF Series-Manual User Manual
Page 22
Bird Technologies
8
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Do not place the unit in a small room or closet without proper
ventilation.
Note:
In restricted areas the heat given off by the unit may
increase the ambient temperature to an unacceptable level.
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Fan intake openings should be at least 4 inches from walls and
obstacles.
Note:
Intake air should not exceed maximum ambient
temperatures of 45°C.
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The air exit duct should be at least 24 inches from walls and
obstacles.
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Do not place temperature sensitive equipment near the air
exit, or equipment that will be affected by a rise in ambient air
temperature.
Note:
Exit air temperatures can reach in excess of 95°C
depending on environmental conditions.
Ducting Placement
Ducting the unit exhaust is recommended for larger models. Mounting
nuts are provided on the rear of the unit for ducting. Refer to Figure 3
for the location of the mounting nuts.
Should an external duct be desired, make sure the following require-
ments are met:
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Maximum 0.2" H
2
O pressure rise at 45°C ambient.
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All ducts should be at least the area of the air exit duct on the
unit. Refer to Figure 3.
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Ninety degree elbows going up to the ceiling may begin imme-
diately at the load exit. However, they should have a mini-
mum 4 inch radius, >15 inches preferred and should transition
to a larger area.
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Ninety degree elbows into the floor or at right angles to the
floor should start a minimum 5 inches from the load exit and
should have a minimum 4 inch radius, >15 inches preferred
and should transition to a larger area.
CAUTION
Do not block airflow. Air is forced into the housing
via fans on all four sides and exhausts through a
grille on the lower rear of the unit. Blocking air
inputs or exhaust could cause unit failure.