3 Assembly and installation [specialist]
10 99E13331xx-mub-en - V02 2019/09
Any connection polarity may be used for the 1 – 4 signal inputs and outputs.
Only type Pt1000 temperature sensors may be used.
Lay the sensor cables at least 100 mm away from any power supply cables.
Use shielded sensor cables when inductive sources are present, e.g. high-voltage lines,
radio transmitters, microwave devices.
Danger of damage and malfunction!
When using a circulation pump, especially with the FriwaMega, the power consumption of the
pumps connected to the controller must absolutely be observed and it has to be checked
whether they are compatible with the controller. In some cases the circulation pump directly
has to be supplied by the mains connection. The speed is controlled via the PWM signal.
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