Zehnder Option Box V2 Manuel De L'installateur page 27

10 0-10V inputs
is limited to deliver a maximum of 150mA. If all
connected devices need more than 150mA you
need to install a powered ComfoSplitter.
■ Install the first desired sensor or switch to
connector 9 (see the wiring diagram).
■ Install the second desired sensor or switch to
connector 11 (see the wiring diagram).
■ Install the third desired sensor or switch to
connector 8 (see the wiring diagram).
■ Install the fourth desired sensor or switch to
connector 10 (see the wiring diagram).
■ If mentioned in the sensor/switch manual: In-
stall the separate power supply of the sensor/
switch.
Example wiring diagram CO
Commissioning
After installation, commission the connected
sensor(s) and/or switch(es) in the ventilation
unit OPTION BOX SETTINGS menu. Enable the
connected input.
You can set the response to the input and the
method of interaction for each 0-10V input
independently. This way you can combine
different types of sensors in one system. You
can set the 0-10V function and the priority for all
0-10V inputs.
It should be considered that the range of
interaction is always between the selected
preset and the maximum allowable volume. For
optimal control, therefore preset 1 should always
be selected. Basic ventilation is guaranteed;
request for more is delivered by the 0-10V
inputs.
The following menus must be set for each
connected 0-10V input:
The device is equipped with four
optional 0-10V inputs to control
the airflow of the ventilation unit.
Any sensor or switch within the
0-10V range can be connected to
one of the inputs.
Installation
The complete ComfoNet system
sensor
2
Menu item Function
INPUT AT 0% The required input signal to get 0%
output signal from the ventilation
unit.
If the connected ancillaries need
negative control, set this value
higher than the value at INPUT AT
100%.
INPUT AT 100% The required input signal to get
100% output signal from the
ventilation unit.
If the connected ancillaries need
positive control, set this value
higher than the value at INPUT AT
0%.
METHOD ■ STEER: the input signal will re-
sult in a rectilinear proportional
output signal;
■ CONTROL: the ventilation unit
will control the output signal to a
setpoint. (When the input signal
is different from the setpoint the
output signal will be adjusted to
try to reach the setpoint.)
CONTROL SETTINGS ■ SETPOINT: the setpoint, which
the ventilation unit must try to
(Only relevant if maintain;
METHOD CONTROL is ■ PROPORTIONAL BAND: the
selected) proportional band value, which
the ventilation unit must use in
its calculations for the output
signal;
■ INTEGRAL TIME: the integral
time value, which the ventilation
unit must use in its calculations
for the output signal.
In the chapter "Control method" you can find
more information on the difference between
steer and control.
In the chapter "Proportional Integral Differential
(PID) controller" you can find more information
on the proportional band and integral timer. The
following menus must be set for all connected
0-10V inputs:
■ 0-10V FUNCTION
Menu item Function
FLOW- The ventilation unit will translate the
PROPORTIONAL incoming signal from a 0-10V sensor
into a corresponding airflow request
between the minimal and maximal
set airflow.
FLOW-PRESET The ventilation unit will translate the
incoming signal from a 0-10V sensor
into one of the airflow presets.
■ 0-10V PRIORITY
Menu item Function
ON The ventilation unit will respond to the 0-10V
signal in AUTO and MANUAL mode.
AUTO ONLY The ventilation unit will only respond to the
0-10V signal in AUTO mode.
OFF The ventilation unit will ignore the 0-10V
signal.
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