Siemens Simatic S7-400

Installing the S7-400
2-17
S7-400 and M7-400 Programmable Controllers, Installation Manual
C79000-G7076-C424-01
The following figure shows the ventilation when air is drawn in from the bottom.
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Exhaust air
Wall
Supply air
Cable duct or fan
subassembly
Modules
Modules
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