Specifications

Air routing
Cooling units
35Rittal System Climate Control
External circuit
Flow and siting conditions
In the outer circuit, enclosure cooling units should be spaced
200 – 400 mm from the wall and/or from each other (air inlet
and outlet openings). In order to ensure adequate air circula-
tion, at least one air outlet opening must be kept free.
If this clearance cannot be maintained, air baffle plates will
need to be used.
The external circuit supports all siting variants.
Thanks to their compact dimensions and external air routing
design, roof-mounted cooling units may even be installed in
low-height rooms and with bayed enclosure suites.
Air intake is always from the front. The air is expelled at the
sides and rear. An outlet to the top is also possible as an
option. In other words, regardless of which siting mode is
chosen, one air outlet must always be kept free.
Siting options
There are no restrictions here. Only the air intake and exhaust
area in front of the cooling unit must be kept free.
Wall-mounted cooling units may be mounted on the rear
panel, side panels or door of the enclosure.
Distance from the wall
at least 200 – 400 mm
Internal circuit – Wall-mounted units,
flow conditions
Attention should be paid to components/electronic compo-
nents equipped with their own ventilation systems, such as
blowers and axial fans. If their air flow is directed against the
chilled air flow of the cooling unit, this could cause an air
short-circuit and prevent adequate climate control. In the
worst case, this air short-circuit could reach the cooling unit
itself, and the internal safety valves would discontinue cool-
ing operation.
Note:
Never direct the chilled air flow at active components.
Accessories:
Air diverter, see Cat. 31, page 659.
4.4