EKA EKA NI EKA NIS EKA NV EKA NV PH EKA NV PTC/PS · EKA (NI, NIS, NV, NV PH, NV PTC/PS) To ensure long service time and quality heating we use heating elements from stainless steel

Subject to technical modification

EKA_P0093_AZ_0001

ELECTRIC DUCT HEATERS

EKAEKA NI

EKA NISEKA NV

EKA NV PHEKA NV PTC/PS

USER MANUAL

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EKA (NI, NIS, NV, NV PH, NV PTC/PS)

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SAFETY INSTRUCTIONS AND PRECAUTIONS 3WARNING! SAFETY REQUIREMENTS 3TRANSPORTING AND STORING 3RECEIVING AND HANDLING 3SERVICE 3QUALITY 3INGRESS PROTECTION (IP) RATING 3

CIRCULAR DUCT HEATER TYPES 4SPECIFICATION 4

INSTALATION 4ELECTRICAL CONNECTION 5

WIRING DIAGRAMS 6HEATERS DESCRIPTION & STRUCTURE 11

DOUBLE OVERHEAT PROTECTION 11DUCT CONNECTION 11

CONTROL 11EXTERNAL CONTROL OF THREE-PHASE HEAT-

ERS 11EXTERNAL CONTROL OF ONE-PHASE & TWO-

PHASE HEATERS 11HEATERS WITH BUILT-IN CONTROL 11AIR VELOCITY 11

CIRCULAR DUCT HEATER TYPES 11APPENDIX A. CIRCULAR DUCT HEATERS POWER & DIMENSIONS 12TROUBLESHOOTING 13WARRANTY 14WARRANTY CLAIM FORM 14

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Improper use of this heater can result in serious bodily injury due to hazards of fire and explosion, burn and electrical shock.

The electrical heater’s model and serial number is located on the label of the product.

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.

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.

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.

We care about quality. 100% of heaters are tested before shipment.

No special service is required for electrical heaters, only to check electrical connection not less then 1 time per year.

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. Heat-ers 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.

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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 sensorPTC/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 sensorNumber of phases.Power of heater kWHeater diameterHeater 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 TR5KType 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 in-stalled 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

D

EKA NIS

F V

D

EKA NIS

D

EKA NIS

D

EKA NIS

F V

3xD

3xD

D

EKA NIS

F V

TJ

TJ

D

EKA NIS

EKANIS

F

D

LED1

PSLED2

EKA NV...PTC/PS

TK-K10K

AHU*

3xD

R RESETP1

Temperature set knob

Duct sensor

Room

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Installation example EKA NI

Installation example EKA NV PTC/PS

D

EKA NIS

F V

D

EKA NIS

D

EKA NIS

D

EKA NIS

F V

3xD

3xD

D

EKA NIS

F V

TJ

TJ

D

EKA NIS

EKANIS

F

D

LED1

PSLED2

EKA NV...PTC/PS

TK-K10K

AHU*

3xD

R RESETP1

Installation example EKA NIS

Temperature set knobTR5K - controller

Duct sensor

Room

External 0-10VDC signal

Room

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 sensor in minimum distance multiplied by the heater’s diameter. For example: heater EKA diameter 315 mm, sensor’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 sensor T J-K10K, or air flow sensor 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

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technical data table.5. Heater must be grounded.6. For heaters install duct temperature sensor and connect as in wiring diagram.

EKA 1X230VA – heating element, B – protection from over-heating 50 °C (automatic), C – protection from over-heating 100 °C (manually), J – Switch, K – Contactor, S – Automatic circuit breaker,

EKA 2X400V

A – heating element, B – protection from over-heating 50 °C (automatic), C – protection from over-heating 100 °C (manually), J – Switch, K – Contactor, S – Automatic circuit breaker,

EKA 3X400V

A – heating element, B – protection from over-heating 50 °C (automatic), C – protection from over-heating 100 °C (manually), J – Switch, K – Contactor, S – Automatic circuit breaker,

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EKA NV 1x230V

A – heating element, B – protection from over-heating 50 °C (automatic), C – protection from over-heating 100 °C (manually), J – Switch, K – Contactor, S – Automatic circuit breaker, T – thermostatV1, V2 – triacTJK10K – duct temperature sensor

EKA NV 2x400V


EKA NV 3x400V


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EKA NI 1x230V

A – heating element, B – protection from over-heating 50 °C (automatic), C – protection from over-heating 100 °C (manually), J – Switch, K – Contactor, S – Automatic circuit breaker, T – thermostatV1, V2 – triacTJK10K – duct temperature sensorTR5K – external potentiom-eter

EKA NI 2x400V


EKA NI 3x400V


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EKA NIS 1x230V

A – heating element, B – protection from over-heating 50 °C (automatic), C – protection from over-heating 100 °C (manually), J – Switch, K – Contactor, S – Automatic circuit breaker, T – thermostatV1, V2 – triac

EKA NIS 2x400V


EKA NIS 3x400V


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EKA NV PTC/PS, NV PH 1x230V

A – heating element, B – protection from over-heating 50 °C (automatic), C – protection from over-heating 100 °C (manually), J – Switch, K – Contactor, S – Automatic circuit breaker, T – thermostatV1, V2 – triacTJK10K – temperature sensorPS - pressure sensorPTC – air flow sensorRP1 - potentiometer

EKA NV PTC/PS, NV PH 2X400V


EKA NV PTC/PS 3X400V


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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.

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 sensor TJK 10 K. Controllers and sensor are not included in the package of product.

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 ele-

ments, 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.

Model Controlled load [kW] Extra load control* Full load Relay output Voltage outputEKR15.1 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 sensor TJK10K. Controller and sensor are not included in the package of product.

Model Controlled load [kW] Maximum controlled current [A] Voltage output

EKR6.16,4 kW/400V

16 A2x400V

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 tem-perature 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 TR5KType NIS – heater control from distance with 0 – 10V signal.Type PTC – heater with installed air flow sensor.Type PS – heater with installed pressure sensorType NV PTC/PS or NV PH – heater with installed air flow sensor and pressure sensor.

Heaters with built-in controls comes with temperature duct sensor 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 typeEKA External controller EKR External control

EKA NV Built-in controller EKR-KN Control on heaters casing, default temperature setpoint 0°C ... +30°C

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EKA NV PTC/PS, NV PH Built-in controller EKR-KN

Control on heaters casing, default temperature setpoint -10 °C ... +50 °C. Air flow sensor and pressure sensor 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.

EKA NI Built-in controller EKR-KN Remote control with wired potentiometer, de-fault temperature setpoint 0 °C ... +30 °C

EKA NIS Built-in controller EKR-KN 0-10 V control

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 [m3/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

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

EKA (NV, NV PTC/PS, NI, NIS) 315355

415550

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

EKA (NV, NV PTC/PS, NI, NIS) 500 10602x400 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 kW400 mm – dimension for 12 kW heaters 520 mm – dimension for 15 kW heaters370 mm – dimension for heaters up to 12 kW505 mm – dimension for 12 kW heaters 630 mm – dimension for 15 kW heaters

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No heat from heater 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)

Automatic circuit breaker switching off 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 elec-trical data.

Protection thermostat cut off 1. Low air flow speed through heater. Check filters, fans, ducts of system.

Standard heaters EKA

No heating from heater 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 sensor fault. Check sensor 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.

Heater gives full output, not by setpoint 1. Temperature sensor fault. Check sensor 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.


Protection thermostat cut off 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 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 sensor fault. Check sensor 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.

Heater gives full output, not by setpoint 1. Temperature sensor fault. Check sensor resistance, it must be 10 kΩ at 25 °C. 2. Air flow sensor sensor fault. Check sensor 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.


Protection thermostat cut off 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).

Heaters with built-in controls EKA NV PTC/PS

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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, stand-ing 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 producerWarranty Claim Form reception date: Received by: Defective product delivered back to the factory

(yes/no):

Producer decision and explanation:

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Documents

EKA EKA NI EKA NIS EKA NV EKA NV PH EKA NV PTC/PS · EKA (NI, NIS, NV, NV PH, NV PTC/PS) To ensure long service time and quality heating we use heating elements from stainless steel