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

June 4, 2024
HAVACO

HAVACO ECH NI/NV/NIS Electric Duct Heaters

HAVACO-ECH-NI-NV-NIS-Electric-Duct-Heaters-
PRODUCT

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).HAVACO-ECH-NI-NV-NIS-Electric-Duct-Heaters-FIG-1

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 heatersHAVACO-ECH-NI-NV-NIS-Electric-Duct-
Heaters-FIG-7

The producer reserves the right to change technical data.

References

Read User Manual Online (PDF format)

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