ELECTRICAL CIRCULAR DUCT HEATERS Technical data Moun ng Maintenance

Thank you for your purchase of this product. This manual describes how to use and install the supplied product. Be sure that you have read and understood its contents before using the heater. The electrical heater's model and serial number are located on the label of the product. WARNING! SAFETY REQUIREMENTS Improper use of this heater can result in serious bodily injury due to hazards of fire and explosion, burn and electrical shock. Use only with electrical voltage and frequency specified on model label. Do not perform any service with heater plugged in. Serious injury or death may occur if personnel...

Table of contents Descrip on Installa on and electrical connec on Technical data Model marking Heaters EKA with integrated controller Descrip on of opera ng EKA NV … (PTC…PS) Descrip on of opera ng EKA NI … (PTC…PS)* Descrip on of opera ng EKA NIS … (PTC…PS)*

Descrip on Electrical duct heaters EKA are designed to heat fresh air in ven la on systems. Casing (EKA protec on class IP 44, except EKA Type NV which protec on class IP 30) is made from Aluzinc coated steel which is high temperature proof and with rubber seals for duct connec on. Tube of hea ng element is made from stainless steel AISI 304. There are 2 protec on thermostats and screw terminals for easy connec on installed in the heaters. Heaters can be installed horizontally with the electrical connec on box facing upwards or sideways and ver cally (only if the air flow direc on upwards). Heaters...

Installa on and electrical connec on Electrical duct heaters EKA can be installed horizontally in any posi on except electrical connec on box downward and ver cally (only if the air flow direc on upwards) (see Fig. 2). IMPORTANT: The installa on to the mains power supply may only be wired by a competent electrician. The power supply cable must be selected in the ra o with power of the heater. When installing these heaters, the standards and regula ons in force in your country must be followed strictly adhered to. Within the installa on an electrical isola on automa c circuit breaker (not included)...

Fig. 4. Moun ng example EKA NIS/ESKM… *- External control signal (0…10VDC) is used in EKA NIS type heater. **- External PWM control signal ON/OFF: ON (6…24VDC) is used in EKA ESKM type heater. Fig. 5. Moun ng example EKA NV/NI…2NTC… *- Temperature set point knob and TR NTC10 are used in EKA NV 2NTC heater version. **- TR5K NTC10 is used in EKA NI 2NTC heater version. Fig. 6. Moun ng example EKA NV/NI… (Preheater) **- TR5K used only in EKA NI pre-heater version. *- Temperature set point knob used only in EKA NV pre-heater version.

Fig. 7. Moun ng example EKA NIS/ESKM… (Preheater) *- External control signal 0…10VDC (from AHU if possible) is used in EKA NIS type pre-heater. **- External PWM control signal ON/OFF: ON 6…24VDC (from AHU if possible) is used in EKA ESKM type preheater. Type 1 – Standard EKA heater dimensions; Type 2 – EKA heater with external pressure relay dimensions; Type 3 – EKA heater with external cooling radiator dimensions; Type 4 – EKA heater with external cooling radiator and pressure relay di

Technical data

This declara on is in conformity with the requirements of the standards: LST EN 60335-2-30:2010+AC:2010+A11:2012+AC:2015 (EN60335-2-30:2009+ AC:2010+ A11:2012+ +AC:2014); LST EN61000-4-2:2009 (EN61000-4-2:2009); LST EN 61000-4-3:2006+A1:2008+A2:2010 (EN 61000-4-3:2006+A1:2008+A2:2010); LST EN 61000-4-4:2013 (EN 61000-4-4:2012); LST EN 61000-4-5:2014 (EN 61000-4-5:2014); LST EN 61000-4-11:2004 (EN 61000-4-11:2004); LST EN 61000-6-2:2005 (EN 61000-6-2:2005); LST EN 61000-3-2:2014 (EN 61000-3-2:2014); LST EN 61000-6-3:2007 + A1:2011 (EN 61000-6-3:2007 + A1:2011); LST EN 61000-3-3:2014 (EN 61000-3-3:2013)....

without integrated control with integrated controller NV – Poten ometer for temperature control is on the lid of the heater NI – External wired remote setpoint knob (TR5K) for temperature control NIS – External wired remote (0…10) VDC signal for temperature control (analog input) ESKM – External wired remote PWM (ON/OFF: ON (6…24) VDC) signal for temperature control 1B – Duct diameter (mm) 100 – 100 mm 160 – 160 mm 125 – 125 mm 200 – 200 mm 150 – 150 mm 315 – 315 mm 2 – Hea ng power (kW) 0.3 – 0,3 kW ... 24.0 – 24,0 kW (NV, NI, NIS) >15 kW with mounted addi onal step 0.3 – 0,3 kW ... 15.0 – 15,0...

Overhea ng protec on Two overheat protec on thermostats are installed in the electrical circular heater EKA. The first one with automa c reset, turns off the hea ng when the temperature reaches 50 °C and turns on when the temperature drops below 50 °C. The second with manual reset, turns off the hea ng when the temperature reaches 100 °C. In this case need to figure the cause of the overhea ng of the heater. Eliminate overhea ng cause, press „RESET“ bu on on heaters cover. Addi onal overhea ng thermostat (with automa c reset) is installed in the EKA heater with ESKM to protect the ESKM controller....

Descrip on of opera ng EKA NIS … Electrical duct heaters EKA NIS … are designed for the heaters power (0…100) % control by analog signal input (0…10) VDC. When the heater power supply is switched on, LED 6 on the controller (EKR-K…) PCB (see Fig. 1 on page 4) flashes every second. If controller turns on the hea ng depending on analog signal, LED 5 lights (see Fig. 1 on page 4). Descrip on of opera ng EKA NV … (PTC…PS) Electrical duct heaters EKA NV … (PTC…PS) are designed with integrated temperature control, PTC (air velocity), PS (air pressure) and temperature sensors, setpoint poten ometer knob...

Descrip on of opera ng EKA NIS … (PTC…PS) * Electrical duct heaters EKA NIS … (PTC…PS) are designed for the heaters power (0…100) % control by analog signal input (0…10) VDC, with integrated PTC (air velocity) and PS (air pressure) sensors. When the heater power supply is switched on, controller (EKR-K…) is in prepara on mode for 30 seconds, LED 1 flashes once every 5 seconds. If air velocity is detected by PTC sensor (rapid LED 1 flashes when Min. 1,5 m/s is detected) and air pressure is greater than min 20kPA a er prepara on mode ends, LED 1 will start to flash once every second and controller...