Corrigo ventilation 3.4 manu

48 Chapter 5 Functional description Manual Corrigo Ventilation, revision R
When the function is activated and combined with pressure controlled fans and the CO
2
value rises
above control value one the fans will start at reduced speed, if they are not already running. Should
the CO
2
value continue to rise the fan speed will also increase until the CO
2
value reaches control
value two at which point the fans will be running at normal speed. The fans will stop when the CO
2
value falls 160 ppm below control value one.
When used with 2-speed fans they will start using reduced speed when the CO
2
value rises above
control value one and switch to normal speed when the CO
2
value reaches control value two. The
fans will stop when the CO
2
value falls 160 ppm below control value one.
If demand controlled ventilation is activated in combination with mixing dampers, and the CO
2
-
value rises above the setpoint value, the dampers will let in more outdoor air. The function is
controlled by a PI-controller. See section 5.1.3 Heat exchanger types.