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8 . 4 C o n s t a n t p r e s s u r e o p e r a t i o n ( C O P )
COP
Recommended mode in multi zone configuration, for variable flow applications with flow
modulation devices installed at the level of the network.
Exhaust air
Extract air
Supply air
Outdoor air
M
M
M
M
M
Extract air
Variable airflow damper controlled according
to CO2 level or optical sensor external to unit.
Area 1
Area 1
Area 2
Area 2
Duct pressure
sensor
AHU
M5
S1
S4
M1
P
R
DP1
DP3
Fl1
ETD
BMS
or
Factory fitted
To be fit by the customer
Coil
M5
or
+ -
Flow is automatically modulated 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 § "5.2.2 Differ
-
ential pressure sensor - Operating in COP (Constant Pressure)", page 18).
The pressure setpoint is entered manually in Pa.
Ventilation mode
Real airflow
Pressure setting point
M3/h at Vmin
Real pressure
Output signal
300Pa
5000 m
3
/h
1000 m3/h
200Pa
5V
The ETD remote control screen shows the flow in real time at the desired
pressure.
Pressure setpoint = Desired pressure value in the selected network. Se
-
lection of this mode in the installer menu automatically configures the
user menu screen. The user can thus change the operation mode of the
unit without touching the settings.
Se t t i n g f o r u s e o n t h e ET D
Menu COP
Off
A
Actual pressure
Actual output
Actual flow
uto
Utilisation
COP
5000 m3/h
200Pa
5V
Stop
Auto = operation according to time or the status of the control terminal
(start/stop of unit).
Note: a control by terminals 31-G0 / 33-G0 is priority.
