Katherm HK
Assembly, installation and operating instructions
45
Katherm HK E circuit description
All trench heaters need a 230 V / 50 Hz power supply.
Factory-fitted actuators are wired to the terminals.
The fan speed/power of the EC fans and electric coil used can be continuously variably controlled by a 0-10 V DC signal.
Switch-over between operating modes is via an external potential-free contact.
Internal safety shut-down: In the event of improver use, the heat output is reduced or switched off.
Faults (motor malfunction, condensate alarm, electric heater fault etc.) are issued by a potential-free collective alarm
contact (max. 30 V / 1A).
Fig.11: Electromechanical junction box (*00), Katherm HK-E
X1: Mains connection (PE, L, N)
X4: Control signals:
DI1: Digital input 24 V, operating mode switch-over
AI2: Analogue input 0-10 V, fan speed
MI3: Heating multifunctional input
MI4: Cooling multifunctional input
X5: Alarm output (1x potential-free changeover contact)
X6: Condensate pump connection (1AT fuse)
X7: Valve actuator connection (24 V DC Open/Closed)
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