Copra AS have distribution in Norway for all Ventmatika products. Cirkular duct heaters are used in ventilation systems as heaters for comfort, or preheaters, to protect ventilation unit for frost.
![](https://www.copra.no/wp-content/uploads/2021/08/EKA-270x270.jpg)
![](https://www.copra.no/wp-content/uploads/2021/08/EKA-2-270x270.jpg)
![](https://www.copra.no/wp-content/uploads/2021/08/EKA-NV5-1024x682-1-270x270.jpg)
![](https://www.copra.no/wp-content/uploads/2021/08/EKA-NV-PTCPS3-1024x682-1-270x270.jpg)
![](https://www.copra.no/wp-content/uploads/2021/08/TR5K-1024x682-1-270x270.jpg)
Frame is made from AluZinc coated steel, which is highly resistant to corrosion. Heating elements are made from stainless steel AISI304. All heaters are equipped with protection thermostats – automatic 50°C and manual – 100°C which prevent overheating. Various control methods and accessories possible, listed below. Non-standard solutions possible. Contact us with your requirements to learn more, or check the product sheet.
- ⌀ 100 – 500mm
- Power output 0.3kW – 24kW
- Power supply
- 1 phase 230v 50/60Hz
- 3 phase 400v/440v 50/60Hz
EKA – without internal controls
Without internal controls, the heater is controlled by external controller.
EKA NV – stand-alone heater with a temperature setpoint on casing (0..30°C)
Stand-alone heater with internal controls and temperature setpoint on casing. Measures the temperature and works autonomously when heating is needed.
Supply air temperature sensor TJ-K10K is included in the box.
EKA NI – stand-alone heater with external setpoint (0..30°C)
Stand-alone heater with internal controls. Setpoint controlled via external TR5K or TR5KNTC10 controller. Measures the temperature and works autonomously when heating is needed.
Supply air temperature sensor TJ-K10K is included in the box.
TR5K or TR5KNTC10 should be ordered separately.
EKA NIS – external 0..10VDC signal
Controlled via external 0..10VDC signal.
EKA NV PTC/PS – stand-alone heater with setpoint on casing (-10..+50°C) and additional protection from insufficient airflow
Stand-alone heater controlling air temperature from -10°C to +50°C. Protection from loss of airflow by airflow sensor PTC and diffeal pressure switch PS.
With extra protections and a broad choice of setpoint temperature, the heater is a great choice for preheating the air before a heat exchanger to prevent frost.
Supply air temperature sensor TJ-K10K is included in the box.
EKA ESKM – controlled via external 6..24VDC PWM signal
Heater controlled via external 6..24V PWM signal.
Equipped with an extra safety thermostat set at 70°C to protect internal components.
EKA MB – controlled via ModBus protocol
Heater is controlled via ModBus RTU485 protocol.
For ModBus address table please contact us.