14
Indicate the airflow range
Once configured the airflow measurement, press the “OK” button to set the first digit of factor k. The value flashes
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 airflow range is selected it is not necessary to enter a range of pressures.
Model
K factor
CAD-COMPACT 500
28
CAD-COMPACT 900
59
CAD-COMPACT 1300
55
CAD-COMPACT 1800
58
CAD-COMPACT 2500
120
CAD-COMPACT 3200
93
CAD-COMPACT 4500
177
6.6.3.4. COP Control (constant pressure)
Constant Pressure (COP)
This type of regulation is associated to multi-zone ventilation systems in which ventilation multi-room is carried
out by a single heat recovery unit. Flow regulation per zone is done using motorized dampers, so speed regulation
of the fans aims to maintain a constant pressure in the ductwork. The value of this pressure must be determined
by experimenting during the system start-up process.
CAD-COMPACT units are equipped with EC motors. The motors have specific 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 maximum 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 in-
formation 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 duc-
ted. Ensure that pressure taps “+“ and “-“ coincide with those of the heat recovery unit:
Position of the pressure taps of the TDP-D transmitter in COP systems with control of the extraction pressure
-
TDP-D
(
Accessory
)
CONTROL
AERO-REG
(
Accessory
)
EXTRACTION
DUCT OF
BUILDING
DUCT OF NEW
AIR INPUT
Summary of Contents for CAD-COMPACT 500
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