Havaco Ech-ni Ptx Electric Duct Heaters User Manual

HAVACO ECH-NI PTX Electric Duct Heaters User Manual

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
  
  
• 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
  
• 2~400 Electrical connection
  
• 3~400 Electrical connection
  

DIMENSIONS [mm]

• Dimensions for 12 kW heaters
  
• Dimensions for 15 kW heaters
  

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: [email protected]

www.ventia.pl

References

• VENTIA | Strona główna