Electronic control strategy
This section describes the key functionallity of the embedded CC4 controller.
For a complete description, Dantherm issues upon request, an extended manual for the
controller.
Never carry out any installation, maintenance or service, without disconnecting the power
supply (please notice that this units has dual power source AC & DC), by means of the exter-
nal power supply disconnecting devices.
The embedded controller, type: CC4, is designed to control the internal temperature of an
outdoor enclosure used for telecom equipment. Cooling units with embedded CC4 control-
lers, removes dissipated heat from electronic equipment and it´s designed to maintain cor-
rect and steady temperature for the electronic radio equipment.
The ComboCooler has both free cooling as well as AC cooling, thus still having connection for
additional external AC units.
The controller offers a wide range of external connections. See more at page 17
This below shown the overall cooling control strategy:
Function/
Fan RPM.
RPMbst
RPMhgh
RPMehgh
on
RPMlow
Off
Thof
Thon
Tf
of
Tset
Tibnd
Tebnd
Dampers closed
Free cooling
Free cooling
high speed
AC mode
Boosted
Dampers closed
Dampers open
Dampers
open
Tfhg
In
ter
nal
c
ompr
essor
Hea
ter
Ex
ter
nal
AC
A
ll A
C on
Tc
off
Tc
on
Teoff
Teon
Taoff
Taon
Temg
Indoor
temp
Fig. 5
If the outside temperature isn’t 3°C (default) lower than setpoint, the freecooling option will
be overruled, and the AC will take over.
Introduction
WARNING
Warning
Caution
Overall
Control strategy
10
