Zehnder 55 Manuel De L'installateur page 29

Recommended settings
Ventilation unit
Mechanical ventilation
Ventilation with heat recovery
Settings Operation of control unit
Sensor The output signal of the control unit is the
measured value
(whereby 2 V corresponds to 400 ppm and
10 V corresponds to 2000 ppm).
The controller that has to ensure that the
CO
high is installed in the ventilation unit.
Controller The output signal of the control unit ensures
the ventilation necessary to achieve
1050 ppm.
The ventilation unit can be controlled via the
0-10 V input.
concentration does not become too
2
Setting of control unit
Controller
Controller,
unless a target value other than 1050 ppm is desired.
Setting of ventilator unit
■ Signal at 0%: 10 V (2000 ppm)
■ Signal at 100%: 2 V (400 ppm)
■ Function of 0-10 V input: regulate
■ Setpoint:
dependent on the desired CO
Example: 4 V (800 ppm).
■ Proportional band: 50% (800 ppm).
■ Integration time: 300 s.
■ Signal at 0%: 0 V (minimal ventilation)
■ Signal at 100%:
10V (maximum ventilation)
■ Function of 0-10 V input: control
level.
2
EN - 29