HAVACO ECH-NI PTX Electric Duct Heaters User Manual

June 4, 2024
HAVACO

HAVACO ECH-NI PTX Electric Duct Heaters User Manual
HAVACO ECH-NI PTX Electric Duct Heaters

DESCRIPTION

  • Electric heaters are designed to heat clean air in ventilation systems.
  • Casing is made from aluzinc coated steel which is high temperature proof.
  • Heating elements tube is made from stainless steel ASI 304.
  • In heaters are installed 2 protection thermostats, screw terminals for easy connection, microprocessial electrical heating controller, pressure switch, air flow sensor.
  • Casing is with rubber seals for duct connection.
    Maximum output air temperature 50°C.

Marking

  • ECH NI PTX/PSX – aaa / b / xf
  • aaa – Duct diameter [mm]
  • b – Power [kw]
  • x – Phases (1~230V, 2~400V, 3~400V)

TECHNICAL DATA

  • All heaters are with 2 protection thermostats:
    • Automatic reset – switch off temperature 50°C.
    • Manual reset – cut off temperature 100°C
    • Supply air temperature setpoint -10…50°C.
    • Heaters have controller installed inside casing.
    • Protection class IP 44.
      [mm]| [m3 /h]| [V/50Hz]| [kW]| [A]
      ---|---|---|---|---
      125| 70| 1~230| 0,3/0,6/0,9/1,2| 1,4/2,8/4,1/5,5
      160| 110| 1~230
      1~230| 0,3/0,6/0,9/1,2| 1,4/2,8/4,1/5,5
      2,8/4,1/5,5/9,1
      13,2
      250| 270| 2~400
      1~230| 0,6/0,9/1,2/2,0
      5| 4,5/5,5/9,1/13,5
      13,2
      8,7
      315| 415| 2~400
      3~400
      1~230| 1,0/1,2/2,0/3,0
      5
      6
      1,0/1,2/2,0| 4,5/5,5/9,1
      13,2
      400| 690| 2~400
      3~400| 5
      6,0/9,0/12,0| 8,7/13,0/17,3

TRANSPORTING

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

INSTALLATION

  • • Heater can be installed in any position (see picture) 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 than 1,5 m/s.

  • Heaters can’t be installed in explosive and aggressive atmosphere

  • Heaters can be used only for clean air heating. It is recommended to install air filter (F) before heater.

  • Heaters intended for inside installation.

  • Casing and air duct before heater should be insulated with rock wool 10cm (R~2,4m²K/W).

  • Example of ECH NI PTX/PSX … heater installation
    INSTALLATION
    INSTALLATION

  • F – filter for suplly air

  •  AHU with heat recovery

ELECTRICAL CONNECTION

  • Electrical connection can be made only by qualified electrician, according 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 install duct temperature sensor and connect as in wiring diagram

SERVICE

  • No special service is required for electrical heaters, only to check electrical connection, check if heating elements and PTX air flow sensor are clean not less than 1 time per year.

TROUBLESHOOTING

  • 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 connection components.
  • Temperature sensor fault

    • Check sensor resistance, it must be 10 kΩ at 25°C.
  • Pressure switch fault

    • Check if pressure in system is set correctly (check the pressure when air flow is not less than 1,5m/s).
  • 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
  • Air flow sensor fault. Check sensor resistance. It must be 22 Ω between X15..X16 and 10 Ω between X15..X18. Sensor must be clear

    • Triac fault. Check triac conductance
    • PCB fault. Change PCB
    • Automatic circuit breaker switching off Protection thermostat cut 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.
    • Pressure switch fault. Check if pressure in system is set correctly (check the pressure when air flow is not less than 1,5m/s)

INDICATION

LED1
Flashing 1 time per 3 seconds – EKR KN warming up (~30s). Flashing 1 time within second – EKR KN ready. Lit – Air flow sensor faul.
LED2
Lit – load is on (heating).

WIRING DIAGRAM

ELECTRICAL WIRING DIAGRAM MARKING

  1. Heating element
  2. Automatic reset overheating thermostat
  3. Manual reset overheating thermostat
  4. Switch
  5. K2 – Relay
  6. Relay
  7. Automatic circuit breaker
  8. Thermostat
  9. V1, V2 – Triac (simistor)
  10. EKR-KN – PCB
  11. RP1 – Supply air temperature setpoint
  12. TJK10K – Duct temperature sensor
  13. PSX – Pressure switch
  14. PTX – Air flow senso
  • 1~230 Electrical connection
    INSTALLATION

  • 2~400 Electrical connection
    INSTALLATION

  • 3~400 Electrical connection
    INSTALLATION

DIMENSIONS [mm]

  • Dimensions for 12 kW heaters
    INSTALLATION

  • Dimensions for 15 kW heaters
    INSTALLATION

CUSTOMER SUPPORT

Ventia Sp. z o.o.
ul. Słowikowskiego 81
05-090 Raszyn
tel.: (+48 22) 841 11 65
fax: (+48 22) 841 10 98
e-mail: info@ventia.pl

www.ventia.pl
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References

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