HAVACO ECH NI/NV/NIS Electric Duct Heaters User Manual

HAVACO ECH NI/NV/NIS Electric Duct Heaters

DESCRIPTION

• Electric heaters are designed to heat clean air in ventilation systems.

• The casing is made from aluzinc coated steel which is high-temperature proof.

• The heating elements tube is made from stainless steel ASI 304.In heaters are installed 2 protection thermostats, screw terminals for easy connection

• Marking
  

• ECH NI/NV/NIS – aaa / b / xf aaa – Duct diameter [mm]
  

• b – x –

• Power [kw]

• Phases (1~230V, 2~400V, 3~400V)

• Casing is with rubber seals for duct connection.

• Heaters can be installed vertically or horizontally.

• Maximum output air temperature 50°C (NIS).

TECHNICAL DATA

• All heaters are with 2 protection thermostats:
  • Automatic reset – switch off temperature 50°C,
  • Manual reset – cut off temperature 100°C.
• For controlling heaters without integrated control, external electric heating controller is needed.
• Heaters have controller installed inside casing (NI, NV, NIS).
• Protection class IP 44 (NV, NIS), IP 30 (NI).

TRANSPORTING

• All products are packed by the producer for normal transporting conditions.
• For unloading and storing use the proper lifter to prevent product damage.
• Do not lift product by power supply cable, or automation components.
• Avoid impacts and impact loads.
• Until installation store products in a dry place: Humidity 70% (20°C), temperature 5-40°C.
• Avoid long-term storing. It is not recommended to store products for more than 1 year.

INSTALLATION

• The heater can be installed in any position (see picture) except the electrical connection box downward.
• If the heater is installed in such a way that can be accidental contact with heating elements, a protective grill must be installed.
• Airflow through the heater must be not less than 1,5 m/s.
• Heaters can’t be installed in an explosive and aggressive atmosphere.
• Heaters can be used only for clean air heating.
• Heaters intended for an inside installation.

ELECTRICAL CONNECTION

• The electrical connection can be made only by qualified electrician, ac-cording to international and national installation standards.
•  Power supply source must conform with data on heater label.
• Power supply cable must be selected corresponding to heater electrical data.
• Automatic circuit breaker must be selected corresponding to technical data table.
• Heater must be grounded.
• For heaters ECH NI, NV install duct temperature sensor and connect as in wiring diagram.
• For heaters NV install external setpoint device and connect as in wiring diagram.
• For heaters NIS connect external control signal 0-10V as in wiring diagram.
• Temperature sensors and setpoint devices are not included.

SERVICE

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

• No heating from heater
  • Manual reset thermostat is cut off. Eliminate overheating cause, press „RESET“ button on heaters cover
  •  No power supply to heater – check all external electrical connec-tion components.
• Temperature sensor fault
  • Check sensor resistance, it must be 10 kΩ at 25°C.
•  External setpoint device fault
  •  Check device resistance. It must be 5kΩ.
•  PCB fault
  •  Change PCB
•  Heater gives full output, not by setpoint
  •  Temperature sensor fault. Check sensor resistance, it must be 10 kΩ at 25°C
  •  External setpoint device fault. Check device resistance. It must be 5kΩ
  •  Triac fault. Check triac conductance
  •  PCB fault. Change PCB
• Automatic circuit breaker switching off
  • Check circuit breakers data, it must correspond to heaters electrical data.
  • Check isolation of connection cables, wires, check is heater grounded.
  • Check power supply source data, it must correspond to heaters electrical data.
• Protection thermostat cut off
  • Low air flow speed through heater. Check filters, fans, ducts of system.

WIRING DIAGRAM

ELECTRICAL WIRING DIAGRAM MARKING

• A – Heating element
• B – Automatic reset overheating thermostat C – Manual reset overheating thermostat J – Switch
• K – Relay
• S – Automatic circuit breaker
• T – Thermostat
• V1, V2 – Triac (simistor)
• EKR-KN – PCB
• HR5K – External temperature setpoint TJK10K – Duct temperature sensor

1~230 Electrical connection ECH-NI
2~400 Electrical connection ECH-NI
3~400 Electrical connection ECH-NI
1~230 Electrical connection ECH-NV
2~400 Electrical connection ECH-NV
3~400 Electrical connection ECH-NV
1~230 Electrical connection ECH-NIS
2~400 Electrical connection ECH-NIS
3~400 Electrical connection ECH-NIS

DIMENSIONS [mm]

Dimensions for 12/15 kW heaters

The producer reserves the right to change technical data.

References

• VENTIA | Strona główna

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