Constant Pressure Operation (Cop) - S&P CADB/T-HE PRO-REG Series Instruction Manual

Examples:
a) The proportional ramp settings of the VAV
mode, depend on the range of the sensor
used. S & P CO2 sensors have a range of
0-2000ppm. However, in the market it is
possible to fi nd sensors with different ranges.
Below are two examples of proportional ramp
confi guration with sensors 0-2000ppm and
400-1100ppm:
minimum speed = 25%
maximum speed = 100%
Vmin = 2 V (400ppm)
Vmax = 8V (1600 ppm)
b) Control by CO2 probe with range 400-1100pm
and output signal (0-10V)
minimum speed = 20%
maximum speed = 100%
Vmin= 0V (40ppm)
Vmax= 10V (1100ppm)
The selection of VAV mode in this installer menu automatically confi gures the screen of the
user menu. The user can then change the unit's operation without touching the settings.
Off: Stop the unit.
Manual: Manually selection of fan's speed.
Auto: Automatic control according to external probe.

9.3.3. Constant pressure operation (COP)

Mode recommended in a multi-area confi guration for variable airfl ow applications
with several modulation systems of the airfl ows installed at the network level.
Airfl ows automatically modulated to maintain a constant pressure value measured by an out-
door pressure sensor.
The access to the confi guration menu of the COP mode is performed as follows:
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