4.6 Fine tuning of fan speed
It is possible to manually regulate the set airflow with 2 potentiometers situated in the electrical
compartment figure 6. This enables the fan motors to be regulated individually down to 75% of the set
airflow, i.e. if the fan is running at 100% capacity (10V) it’s possible to regulate it down to 75% of that
particular set point (7,5V), i.e. if the fan is set to run at 5V control signal the same result would be 3,75V etc.
Note:
The potentiometers are meant to be used for commissioning of the unit to ensure a proper pressure
balance between extract and supply inside the Topvex unit.
Explanation:
• SF: Supply air fan
• EF: Extract air fan
Fig. 6 Potentiometers for fine tuning of fan speeds
Topvex FR03, FR06, FR08, and FR11
Operation and Maintenance Instructions
206575
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Systemair AB
