Katherm HK
Assembly, installation and operating instructions
41
7.2 Electromechanical connection, 24 V (*24)
Circuit description
All trench heaters need a 24 V DC power supply.
Factory-fitted actuators are wired to the terminals. The appropriate terminals are available for valve actuators.
The fan speed of the EC fans used can be continuously variably controlled by a 0-10 V DC signal. The internal motor elec-
tronics detects any possible motor malfunction and automatically switches off the fan.
Power supply 24 V DC
Speed signal
Power supply GND
Valve actuators
Fig.9: Electromechanical connection (*24), Katherm 320/130, 245/160, 290/160
Control via 0 – 10 V DC
control signal Function
0 V Off
1.5 V – 10 V 0 – 100%
Note these points in the following wiring diagrams with electromechanical control:
Comply with the details on cable types and cabling with due consideration for VDE 0100.
Without *: NYM-J. The requisite number of wires, including protective earth, 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 0.8mm. Lay separately from power 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.
The Electrical data for PowerKon nano, 230 V need to be respected when rating the in situ mains power supply and fus-
ing.
To Next Page
Loading...
