EKA EKA NI EKA NIS EKA NV EKA NV PH EKA NV PTC/PS

ELECTRIC DUCT HEATERS EKA EKA NI EKA NIS EKA NV EKA NV PH EKA NV PTC/PS USER MANUAL Subject to technical modification EKA_P0093_AZ_0001

SAFETY INSTRUCTIONS AND PRECAUTIONS 3 WARNING! SAFETY REQUIREMENTS 3 TRANSPORTING AND STORING 3 RECEIVING AND HANDLING 3 SERVICE 3 QUALITY 3 INGRESS PROTECTION (IP) RATING 3 CIRCULAR DUCT HEATER TYPES 4 SPECIFICATION 4 INSTALATION 4 ELECTRICAL CONNECTION 5 WIRING DIAGRAMS 6 HEATERS DESCRIPTION & STRUCTURE 11 DOUBLE OVERHEAT PROTECTION 11 DUCT CONNECTION 11 CONTROL 11 EXTERNAL CONTROL OF THREE-PHASE HEAT- ERS 11 EXTERNAL CONTROL OF ONE-PHASE & TWO- PHASE HEATERS 11 HEATERS WITH BUILT-IN CONTROL 11 AIR VELOCITY 11 CIRCULAR DUCT HEATER TYPES 11 APPENDIX A. CIRCULAR DUCT HEATERS POWER & DIMENSIONS 12 TROUBLESHOOTING 13 WARRANTY 14 WARRANTY CLAIM FORM 14 2

The electrical heater s model and serial number is located on the label of the product. 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 come in contact with high voltage lead. Parts of the heater become very hot when operating and immediately after operating. Severe burns may occur if the heater is not allowed to cool down properly before servicing. All products are packed by producer for normal transporting conditions. For unloading and storing use proper lifter to prevent product damage and employees injuries. Do not lift product by power supply cable, connection box. Avoid impacts and impact loads. Until final installation store products in dry place with humidity not more 70% (20 C), average ambient temperature must be 5-40 C. Storing place must be covered from water and dirt. Avoid long term storing. It is not recommended to store products more then 1 (one) year. Inspect heater for any possible shipping damage. Inspect heater element wire for any deformation that could cause a short circuit or ground. Make sure that casing of the heater is not damaged. No special service is required for electrical heaters, only to check electrical connection not less then 1 time per year. We care about quality. 100% of heaters are tested before shipment. First Numeral Protection against contact and ingress of foreign bodies: most wires, screws, etc. Second Numeral Protection against water: water splashing against the enclosure from any direction shall have no harmful effect. Heaters type EKA, EKA NI, NIS protection rating is IP44. Heaters type EKA NV, EKA NV PTC/PS, EKA NV PH protection rating is IP30. 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. 3

To ensure long service time and quality heating we use heating elements from stainless steel. In one-phase (1x230 V) heaters EKA are installed one-phase (1x230 V) heating elements of following power: 0.3 kw, 0.6 kw, 1.0 kw, 1.2 kw. Heater voltage 1x230V Heater power 0.3 kw 0.6kW 0.9kW 1.2kW 1.5kW 1.8kW 2.0kW 2.4kW Number of heating elements 1x0.3 2x0.3 3x0.3 4x0.3 5x0.3 6x0.3 2x1.0 4x0.6 Heater voltage 2x400V 3x400V Heater power 3.0 kw 5.0kW 6.0kW 6.0kW 9.0kW 12.0kW 15.0kW Number of heating elements 3x1.0 5x1.0 6x1.0 6.0x1 6x1.5 6x1.5+3x1.0 6x1.5+6x1.0 In two phase (2x400 V) and three-phase (3x400 V) heaters are installed three-phase (3x400 V) heating elements of following power: 1.0 kw and 1.5 kw. EKA NV 400 15.00 3f PTC PS Heater with installed pressure PTC/PS type can be marked also as NV PH if temperature setpoint of the heater -20 C to -5 C Heater with installed air flow Number of phases. Power of heater kw Heater diameter Heater type. Type NV - you can set temperature of heater with potentiometer installed on heaters casing. Type NI - you can set temperature from distance with wired remote potentiometer TR5K Type NIS heater control from distance with 0 10 V signal. Circular duct heater Heater can be installed in any position (see picture below) except electrical connection box downward. If heater is installed in such way that can be accidental contact with heating elements, protective grill must be installed. Air flow through heater must be not less 1,5 m/s. Heaters can not be installed in explosive and aggressive substances atmosphere. Heaters can be used only for clean air heating. Heaters intended for inside installation. Heaters installation position: Installation example EKA NV F V Temperature set knob Room EKA NIS Duct TJ D 3xD 4

Installation example EKA NI Room F V EKA NIS Duct TJ D 3xD Temperature set knob TR5K - controller Installation example EKA NIS External 0-10VDC signal F V Room EKA NIS D Installation example EKA NV PTC/PS AHU* TK-K10K RP1 LED1 LED2 RESET PS EKA NIS F 3xD EKA NV...PTC/PS D Casing and air duct before heater should be insulated with rock wool 10 cm (R~2,4 m²k/w). It is recommended to install air filter before the heater. *AHU air handling unit with heat recovery. F supply air filter. Depending on the installation location of the heater in the duct relative to the engine (before or behind the engine), the pressure hose therefore has to be attached to a + or the - tube. If heater is installed behind engine - tube inside, + tube before the engine. 3xD we recommend install duct temperature in minimum distance multiplied by the heater s diameter. For example: heater EKA diameter 315 mm, s installation length will be: 315x3=945 mm. INDICATION of LED lamps on EKA NV PTC/PS casing 1. LED1 Flashing 1 time per 3 seconds EKR KN warming up (~30 s) Flashing 1 time within second EKR KN ready, Lights up fault of duct temperature T J-K10K, or air flow PTC fault. 2. LED2 Lights up load is on (heating). 1. Electrical connection can be made only by qualified electrician according legal international and national electrical installation standards. 2. Power supply source must conform with data on heater label. 3. Power supply cable must be selected corresponding to heater electrical data. 4. Automatic circuit breaker with at least 3 mm contact gap must be installed. Automatic circuit breaker must and relay be selected corresponding to 5

technical data table. 5. Heater must be grounded. 6. For heaters install duct temperature and connect as in wiring diagram. EKA 1X230V EKA 2X400V EKA 3X400V 6

EKA NV 1x230V TJK10K duct temperature EKA NV 2x400V TJK10K duct temperature EKA NV 3x400V TJK10K duct temperature 7

EKA NI 1x230V TJK10K duct temperature TR5K external potentiometer EKA NI 2x400V TJK10K duct temperature TR5K external potentiometer EKA NI 3x400V TJK10K duct temperature TR5K external potentiometer 8

EKA NIS 1x230V EKA NIS 2x400V EKA NIS 3x400V 9

EKA NV PTC/PS, NV PH 1x230V TJK10K temperature PS - pressure PTC air flow RP1 - potentiometer EKA NV PTC/PS, NV PH 2X400V TJK10K temperature PS - pressure PTC air flow RP1 - potentiometer EKA NV PTC/PS 3X400V TJK10K temperature PS - pressure PTC air flow RP1 - potentiometer 10

Duct heaters are designed to heat clean air in ventilation systems and to preheat air handling units. Corrosion resistant casing with excellent thermal reflectivity is made from AluZinc. Duct connection is with rolled rubber seals, duct heater elements are made from stainless steel. To ensure safety in duct heaters are installed 2 protection thermostats and screw terminals for easy connection. Heaters casings are produced from AluZinc coated steel and heating elements from stainless steel AISI 304. AluZinc casing was selected because for its properties: Good corrosion resistance at high temperatures (up to 315 C) Excellent thermal reflectivity Good abrasion resistance because of its surface hardness Durability: under normal conditions the AZ 150 coating grade will protect the steel substrate from corrosion for a minimum period of 15 years. To ensure security in case of fire in all electric air heaters 2 heat protection thermostats are installed: First overheat protection automatically activates if temperature reaches 50 C, then protection disconnects heating elements, until it has cooled. When the temperature falls to the working temperature, heater automatically switches on. Second overheat protection automatically activates if temperature reaches 100 C, then protection disconnects heating elements, until it has cooled. In this case need to figure the cause of the overheating of the heater. Heater needs to be reset manually with the pushbutton on the heaters casing. For easy duct connection heaters casing is with rolled rubber seals. Standard circular duct heaters type EKA has no internal controller, in this case can be used external heating controllers EKR 15.1, EKR 15.1P, EKR 30, EKR 30P and temperature TJK 10 K. Controllers and are not included in the package of product. Model Controlled load [kw] Extra load control* Full load Relay output Voltage output EKR15.1 15 Up to 12 kw 27 kw 1x5A/230V 3x230/3x400 EKR15.1P 15 Up to 225 kw 240 kw 4x5A/230V 3x230/3x400 EKR30 30 Up to 42 kw 42 kw 1x5A/230V 3x230/3x400 EKR30P 30 Up to 420 kw 450 kw 4x5A/230V 3x230/3x400 * Extra load control with contactor For one-phase and two-phase heaters control we recommend to use proportional controller EKR6.1 and temperature TJK10K. Controller and are not included in the package of product. Model Controlled load [kw] Maximum controlled current [A] Voltage output EKR6.1 6,4 kw/400v 2x400V 16 A 3.2 kw/230v 1x230V Electric duct heaters with built-in control has installed internal controller EKR-KN which works by algorithm impulse/pause..., that enables fine temperature control. Regulator controls load by triacs without moving parts, which causes no-noise commutation. Following models of heaters are with internals controllers, and there are differences between them: Type NV - you can set temperature of heater with potentiometer installed on heaters casing. Type NI - you can set temperature from distance with wired remote potentiometer TR5K Type NIS heater control from distance with 0 10V signal. Type PTC heater with installed air flow. Type PS heater with installed pressure Type NV PTC/PS or NV PH heater with installed air flow and pressure. Heaters with built-in controls comes with temperature duct in the package of the product (except type EKA NIS). The duct heaters are designed for a minimum air velocity of 1,5 m/s. If the air flow is lower than 1.5 m/s it can often be activated overheat protection. Model Control Control type EKA External controller EKR External control EKA NV Built-in controller EKR-KN Control on heaters casing, default temperature setpoint 0 C... +30 C 11

EKA NV PTC/PS, NV PH EKA NI Built-in controller EKR-KN Built-in controller EKR-KN EKA NIS Built-in controller EKR-KN 0-10 V control Control on heaters casing, default temperature setpoint -10 C... +50 C. Air flow and pressure are installed inside the heater. Difference between heaters is EKA NV PTC/PS and EKA NV PH, that EKA NV PH temperature setpoint is -20 C iki -5 C. Remote control with wired potentiometer, default temperature setpoint 0 C... +30 C In heaters type NV PTC/PS are installed controllers with default temperature setpoint -10 C... +50 C, on your needs we can install controllers with different temperature setpoints: -40 C till -10 C 0 C till +30 C -5 C till 0 C -20 C till -5 C -10 C till 0 C - Please inform about needed temperature setpoint before production, othervise heater will be produced with factory default setpoint. All circular duct heaters EKA regardless of the type can be produced in following dimensions and power: Type Diameter Min. airflow [m 3 /h] Voltage [V/50Hz] Power [kw] EKA (NV, NV PTC/PS, NI, NIS) 100 40 1x230 0.3, 0.6, 0.9, 1.2 EKA (NV, NV PTC/PS, NI, NIS) 125 70 1x230 0.3, 0.6, 0.9, 1.2, 1.8, 2.4 EKA (NV, NV PTC/PS, NI, NIS) 160 110 EKA (NV, NV PTC/PS, NI, NIS) 200 170 EKA (NV, NV PTC/PS, NI, NIS) 250 270 EKA (NV, NV PTC/PS, NI, NIS) 315 355 415 550 EKA (NV, NV PTC/PS, NI, NIS) 400 690 EKA (NV, NV PTC/PS, NI, NIS) 500 1060 1x230 0.3, 0.6, 0.9, 1.2, 1.8, 2.4 2x400 3.0, 5.0, 6.0 3x400 6.0 1x230 0.9, 1.2, 1.8, 2.4, 3.0 2x400 3.0, 5.0, 6.0 3x400 6.0 1x230 1.2, 2.0, 2.4, 3.0 2x400 3.0, 5.0, 6.0 3x400 6.0, 9.0, 12.0 1x230 1.2, 2.0, 2.4, 3.0 2x400 3.0, 5.0, 6.0 3x400 6.0, 9.0, 12.0 1x230 3.0, 5.0, 6.0 2x400 3.0, 5.0, 6.0 3x400 6.0, 9.0, 12.0, 15.0, 18.0 2x400 3.0, 5.0, 6.0 3x400 6.0, 9.0, 12.0, 15.0, 18.0, 24.0 18.0 and 24.0 kw heaters are produced on customers request. Production time can be longer as usually. 270 mm dimension for heaters up to 12 kw 400 mm dimension for 12 kw heaters 520 mm dimension for 15 kw heaters 370 mm dimension for heaters up to 12 kw 505 mm dimension for 12 kw heaters 630 mm dimension for 15 kw heaters 12

Standard heaters EKA No heat from heater Automatic circuit breaker switching off Protection thermostat cut off 1. Manual reset thermostat is cut off. In this case need to figure the cause of the overheating of the heater. Eliminate overheating cause, press RESET button on heaters cover. 2. No power supply to heater check all external electrical connection components (relays, switches, controllers) 1. Check circuit breakers data, it must correspond to heaters electrical data. 2. Check isolation of connection cables, wires, check is heater grounded. 3. Check power supply source data, it must correspond to heaters electrical data. 1. Low air flow speed through heater. Check filters, fans, ducts of system. Heaters with built-in controls EKA NV, NI, NIS No heating from heater Heater gives full output, not by setpoint Automatic circuit breaker switching off Protection thermostat cut off 1. Manual reset thermostat is cut off. In this case need to figure the cause of the overheating of the heater. Eliminate overheating cause, press RESET button on heaters cover. 2. No power supply to heater check all external electrical connection components (relays, switches, controllers). 3. Temperature fault. Check resistance, it must be 10 kω at 25 C. 4. External setpoint device fault. Check device potentiometer resistance, it must be 5 kω. 5. PCB fault. Change PCB. 1. Temperature fault. Check resistance, it must be 10 kω at 25 C. 2. External setpoint device fault. Check device resistance, it must be 5 kω. 3. Triacs fault. Check triacs conductance. 4. PCB fault. Change PCB. 1. Check circuit breakers data, it must correspond to heaters electrical data. 2. Check isolation of connection cables, wires, check is heater grounded. 3. Check power supply source data, it must correspond to heaters electrical data. 1. Low air flow speed through heater. Check filters, fans, ducts of system. Heaters with built-in controls EKA NV PTC/PS No heating from heater Heater gives full output, not by setpoint Automatic circuit breaker switching off Protection thermostat cut off 1. Manual reset thermostat is cut off. In this case need to figure the cause of the overheating of the heater. Eliminate overheating cause, press RESET button on heaters cover. 2. No power supply to heater check all external electrical connection components (relays, switches). 3. Temperature fault. Check resistance, it must be 10 kω at 25 C. 4. Pressure switch fault. Check if pressure in system is set correctly (check the pressure when air flow is not less then 1,5 m/s). 5. PCB fault. Change PCB. 1. Temperature fault. Check resistance, it must be 10 kω at 25 C. 2. Air flow fault. Check resistance. It must be 22 Ω between X15..X16 and 10 Ω between X15..X18. Sensor must be clear. 3. Triacs fault. Check triacs conductance. 4. PCB fault. Change PCB. 1. Check circuit breakers data, it must correspond to heaters electrical data. 2. Check isolation of connection cables, wires, check is heater grounded. 3. Check power supply source data, it must correspond to heaters electrical data. 1. Low air flow speed through heater. Check filters, fans, ducts of system. 2. Pressure switch fault. Check if pressure in system is set correctly (check the pressure when air flow is not less then 1,5 m/s). 13

1. Manufacture declare 2 years warranty term from the date of manufacturer s invoice. Warranty is applied in case if all requirements of transporting, storing, installation and electrical connection are fulfilled. 2. In case of damaged or faulty product during warranty term customer must inform producer in 5 days and deliver product to manufacture as soon as possible at customer s costs. In other case warranty is not valid. 3. Manufacture is not responsible for damages which occur during transportation or installation. - Warranty Claim Form has to be COMPLETELY filled out and sent to the producer by e-mail or fax. - Product or product part serial number and production date must be indicated. - All defective products or product parts should be returned to factory with the copy of this form. - If the above mentioned point No. 3 can not be fulfilled and there are serious reasons for that, all possible information (photos, descriptions and etc.) has to be sent with this form. Photos must be taken in such a way that product or product part label and possible defect part is clearly visible and identified. - Warranty claim would not be accepted if product or product part is mechanically damaged or there were made any modifications to the product without written producer consent. - An invoice has to be included to obtain warranty. Date: Filled out by: Company: Address: Phone: Fax: E-mail: Product or product part name: Serial number: Production date: Malfunction date: Reason why product or product part is not delivered back to the factory (if delivered, filling not needed): Product installation place and environment (mounted on a wall, standing on the floor and etc.; living room, working place, surrounding area and etc.): Operating data: Approximate number of working hours per day: Working temperature from to : Humidity : % Date of last technical inspection: Full explanation of the malfunction: Part to be filled out by producer Warranty Claim Form reception date: Received by: Defective product delivered back to the factory (yes/no): Producer decision and explanation: 14