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1 Function and features The airflow monitor monitors airflows. It senses whether there is a preset airflow (= green LED lights, output relay energised for NO function, de-energised for NC function). If the flow is below the preset value, the red LED lights. The output relay is de- energised for NO function and energised for NC function.
To avoid malfunction a minimum distance between the air flow moni- tor and bends, valves or such like must be observed. min. min. 5 x D 3 x D 3 Electrical connection The unit must only be connected by an electrician. The national and international regulations for the installation of electrical equipment must be observed.