Ericsson RBS 2106 Reference Manual page 93

•
•
Both types consist of a Climate Control Unit (CCU), a heater, a heat
exchanger, fans and air-ducts. The Combined Climate Unit has in
addition a compressor, condenser, evaporator, reducing valve and an
AC-powered condenser fan, to refrigerate the cooling air.
The CCU monitors temperatures both inside and outside the cabinet. It
provides heating or cooling by controlling the heater and fans (internal
and external); in the Combined Climate Unit it also controls the
compressor and the condenser fan. The CCU also performs alarm
handling and test functions.
Figure 33
EN/LZT 720 0008 P2A
2001-11-28
Combined Climate Unit. This has both heating and refrigeration.
Air-to-Air Heat Exchanger climate unit. This provides heating,
and cooling through forced convection. It has no refrigerating
capacity; the cabinet cannot be cooled to a temperature lower than
that of the outside (ambient) air.
Combined Climate Unit
CCU DC/DC AC/DC
Transformer
Heat
Exchanger
Heater
Active
Cooler
Condensor Evaporator
Supply Air
Block diagram, Combined Climate Unit
© Ericsson Radio Systems AB
— All Rights Reserved —
Product Data RBS 2106
RBS
Return Air
Sub Racks
P008419A
91 (485)