31
Indicate the airfl ow range:
Once confi gured the airfl ow measurement, press the “OK” button to set the fi rst digit of factor
k. The value fl ashes and is adjusted using the buttons “
▲
” and “
▼
”. when set, press the “OK”
button to memorise the factor k. The actual measured value is displayed. If a airfl ow range is
selected it is not necessary to enter a range of pressures.
Model
K Factor
CADB-HE 04
46
CADB-HE 08
69
CADB-HE 12
69
CADB-HE 16
69
CADB/T-HE 21
131
CADB/T-HE 27
–
CADT-HE 33
131
CADT-HE 45
188
CADT-HE 60
188
CADT-HE 100
365
6.6.4.4. COP Control (Constant pressure)
Constant Pressure (COP)
The inverter is used in multiroom ventilation systems to guarantee a constant air pressure
value in the duct system, regardless of whether the dampers are open or closed.
In both cases, the pressure must be constant in the duct system. The value of this pressure
must be determined by experimenting during the system start-up process.
All CADB-HE are equipped with EC motors, single-phase 230V power on models 04 to 27
and three-phase 400V on models 33 to 100. The motors have specifi c terminals for sending
a regulation signal to control fan speed (0-10V).
The 0V signal corresponds to the fan stop, while the signal of 10V corresponds to fan maxi-
mum speed.
To perform the speed regulation in COP mode, it is necessary to use the accessory CONTROL
AERO-REG and the external pressure sensor TDP-D. In the CONTROL AERO-REG instruction
booklet it is contained the necessary information to carry on the electrical connection of the
different components.
1º Connect the pressure transmitter TDP-D (accessory) to the duct system where the heat
recovery unit is ducted. Ensure that pressure taps “ + “ and “ - “ are in the right position
according to the following images.
Summary of Contents for CADB HE ECOWATT Series
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