Requirements For Ip20 And Ip21/Nema - Danfoss AHF 010 Design Manual

Requirements for Installati...
4.1.4.1 Requirements for IP20 and IP21/
NEMA 1
To guide air through the gap between the wall and the
filter, mount the filters on a wall. In installations, for
example panels, where the filter is mounted on rails, the
filter is not sufficiently cooled because of false airflow. To
overcome the false airflow, order a backplate (thickness:
2 mm (0.08 in)), shown in Illustration 4.4. See Table 5.12 for
order number.
For information about the backplate dimensions, see
chapter 7.4.4 Backplate Dimensions.
Illustration 4.3 Correct Airflow without Backplate
1
1 Backplate - 2 mm (0.08 in) thickness
Illustration 4.4 Correct Airflow with Backplate
MG80C602
Design Guide
1
Illustration 4.5 False Airflow
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1
False airflow
4 4
21