Air/water heat exchanger Free air circulation 200 It is important to ensure “even” air circulation inside the enclosure. Air inlet and outlet openings in the internal circuit must on no account be obstructed by electrical installations. This would prevent air from circulating inside the enclosure. Under such conditions, the cooling capacity of the device would not be adequately utilised. A clearance of > 200 mm must be guaranteed. Note: Wall-mounted cooling units should never be fitted directly behind the mounting plate. Active power components are located on the front of the mounting plates. The heat exchanger would then operate in its own air short-circuit. If it is impossible to install the device any other way, appro- priate air baffle plates should be used, and air inlet and out- let openings should be provided in the mounting plate. Internal circuit – Roof-mounted units Flow conditions When using roof-mounted units, particular attention should be paid to the air flow from blowers built into electronic com- ponents such as frequency converters and other drive units. Internal circuit – Wall-mounted units Flow conditions When installing self-ventilating components and electronic parts, please observe the following: Blowers and axial fans whose air flow is in the opposite direc- tion to the cold air flow from the heat exchangers may cause a short-circuit and prevent adequate climate control. Note: Never direct the chilled air flow at active components. Technical System Catalogue/Climate control 3 - 44
Technical System Catalogue Climate Control
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