Duct electrical heaters for supply air heating in round duct ventilation system.
NKﾅU duct heater with temperature controller, power demand from 0.6 up to 2.4 kW: temperature control knob with temperature range from -10ﾰC up to +40ﾰC on junction box front panel. Equipped with built-in temperature sensor integrated inside of heater’s duct. Thermal switch with manual reset actuated at +60ﾰC for the thermal overheating protection.
NKﾅU duct heater with a control unit, power
demand from 3.0 up to 9.0 kW: equipped with a triac power control unit. Power control is effected by means of switching ON/OFF the maximum load commutated by semiconductor device that is free of any mechanical wear parts. Load commutation starts at zero current and load to disable any magnetic field interferences.
Operation logic options:
* operation logic based on temperature sensor readings to maintain set air temperature in air duct;
* proportional electric heat control from 0 up to 100% with a 0-10 V control signal from the external controller.