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8.4 Constant pressure operation (COP)
COP
Recommended mode in multi zone confi guration, for variable fl ow applications with devices
to modulate fl ows installed at the level of the network.
Optical sensor
CO2 sensor
M
M
M
M
Extract air
Extract air
Δ P
+
-
Pressure sensor
Pressure
setting point
Regulation
Elec
heater
FI2
FI1
DP1
DP3
M
Coil
OU
Fresh air
Flow automatically modulated in order to maintain a constant pressure value measured by an external
pressure sensor. The ETD control screen will indicate on which network the pressure sensor is placed
(See Accessories - diff erential pressure sensor).
The pressure set point is manually entered in Pa.
Ventilation mode
Air flow
Pressure setting point
M3/h at Vmin
Pressure
Output signal
60Pa
300m
3
/h
1000 m3/h
966Pa
1V
The ETD command control screen displays the fl ow in real time at the
desired pressure.
Pressure set point = desired pressure value in the selected network. The
selection of this mode in this installer menu automatically confi gures the
user menu screen. The user can therefore change the operating mode of
the unit without touching the settings.
Adjustment for use on ETD
COP Menu
Stop
A
Actual pressure
output signal
Actual flow
uto
COP
Use
300 m3/h
966Pa
10V
Stop
Auto = operation according to clock or status of the control terminal (start/
stop of unit)
Comment: a control by terminals 31-32 / 33-34 is a priority.
