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Technical System Catalogue Climate Control

Cooling units External circuit – Flow and siting conditions In the outer circuit, enclosure cooling units should be spaced > 200 mm from the wall and/or from each other (air inlet and outlet openings). In order to ensure adequate air circulation, at least one air outlet opening must be kept free. If this clearance cannot be maintained, air baffle plates will need to be used. Roof-mounted cooling units A range of installation positions may be considered for roof- mounted cooling units, due, in part, to the routing in the external air circuit. Thanks to this, together with their com- pact dimensions, roof-mounted cooling units may even be installed in low-height rooms and with bayed enclosure suites. As supplied, the units draw air in at the front and at least 200 mmDistance from the wall exhaust it via the rear and sides. Exhaust via the top is also available as an option, however, regardless of the type of installation, the units must be free to exhaust air via at least one of these routes. Wall-mounted cooling units There are no restrictions to the installation position of wall- mounted cooling units provided that the air intake and exhaust areas at the front are not obscured. Wall-mounted cooling units may be mounted on the rear panel, side panels or door of the enclosure. Internal circuit – Air diverter Wall-mounted units Flow conditions Attention should be paid to installed equipment that is fitted External with its own ventilation system, such as blowers and axial air circuit fans. If their air flow is directed against the chilled air flow of the cooling unit, the air may short-circuit, bypassing the component. In the worst case, the internal safety systems Internal of the cooling unit would discontinue cooling operation. air circuit Note: Never direct the chilled air flow at active components. Accessories: Air diverter, see Cat. 33, page 475. 651) 1) 115 mm for SK 3213.330 3 - 21 Technical System Catalogue/Climate control


Technical System Catalogue Climate Control
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