Ultra
Assembly, installation and operating instructions
32
Refer to these points in the following installation diagrams with electromechanical control:
Comply with the details on cable types and cabling with due consideration of VDE 0100.
Without *: NYM-J. The requisite number of wires, including PE conductor, is stated on the cable. Cross-sections are not
stated, as the cable length is involved in the calculation of the cross-section.
With *: J-Y(ST)Y 0.8 mm, max. 100 m between the fan speed controller and the last unit heater; provide a shield on one
side when longer than 20 m. Lay separately from high voltage lines.
With **: Sensor connection cable 1.5 mm² e.g. J-Y(ST) Y, 4 x 2 x 0.8 mm, max. 100 m. Lay separately from high voltage
lines.
With ***: J-Y(ST)Y, 0.8 mm, max. 50 m. Lay separately from high voltage lines.
With ****: J-Y(ST)Y, 0.8 mm, max. 100 m. Lay separately from high voltage lines.
If other types of cables are used, they must be at least equivalent.
The terminals on the unit are suitable for a maximum wire cross-section of 2.5 mm².
When using residual current circuit breakers, they need to be at least mixed frequency-sensitive (type F) for types 44xx5x
and 45xx56, and all current-sensitive (type B) for all other types. When the power supply to the unit is switched on,
pulsed charging currents of the capacitors in the integrated EMC filter can cause residual current safety devices to trip.
Note the electrical data when rating the in-situ mains power supply and fuse.