Riello GAS 4/2 Installation - Use - Maintenance
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Riello GAS 4/2 Installation - Use - Maintenance

Riello GAS 4/2 Installation - Use - Maintenance

Forced draught gas burner
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Installation, use and maintenance instructions
Forced draught gas burner
GB
Two stage operation
CODE
MODEL
TYPE
3752282
GAS 4/2
522 T80
2915866 (4) - 07/2015

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Summary of Contents for Riello GAS 4/2

  • Page 1 Installation, use and maintenance instructions Forced draught gas burner Two stage operation CODE MODEL TYPE 3752282 GAS 4/2 522 T80 2915866 (4) - 07/2015...
  • Page 2 The quality is guaranteed by a quality and management system certified in accordance with UNI EN ISO 9001. Legnago, 21.05.2015 Executive General Manager Research & Development Director RIELLO S.p.A. - Burner Department RIELLO S.p.A. - Burner Department Mr. U. Ferretti Mr. F. Comencini...

  • Page 3: Technical Data

    TECHNICAL DATA Thermal output stage 180 - 470 kW 154.800 - 404.200 kcal/h Operation Two stages, high and low flame Fuel Natural gas Pci 8 - 10 kWh/m = 7000 - 8600 kcal/m For maximum output 9.8 mbar are needed measured at the coupling with Minimum gas pressure nil pressure in the combustion chamber and gas with calorific value of 8600 kcal/m...

  • Page 4: Gas Supply

    STANDARDS EQUIPMENT Quantity Description Flange Gasket Screws Flange gasket ACCESSORIES • RADIO DISTURBANCE PROTECTION KIT code 3010386 If the burner is installed in places particularly subject to radio disturbance (emission of signals exceeding 10 V/m) owing to the presence of an INVERTER, or in applications where the length of the thermostat connections exceeds 20 metres, a protection kit is available as an interface between the control box and the burner.

  • Page 5: Working Range

    WORKING RANGE COMBUSTION CHAMBER PRESSURE 2 STAGE OUTPUT (in compliance with DIN 4788) kcal/h D1786 Min. output at 1 stage: 115 kW - 99.000 kcal/h. MINIMUM GAS PRESSURE - OUTPUT Pressure: detected at the pressure test-point 7) (fig. 1) with nil mbar into the combustion chamber. Should the combustion chamber be pressurized, the pressure necessary will be that of the graph plus the pressurization value.
  • Page 6 BURNER ELECTRICAL WIRING (carried out in the factory) 20107484 KEY TO LAYOUT CMV Fan motor contactor A TTENTION Protection against radio interference In the case of phase-phase feed, a Relay Burner terminal strip bridge must be fitted on the control box Fan motor terminal board between terminal 6 and Air pressure switch...
  • Page 7 ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BLOCK (to be carried out by the installer) D2662 Remote lock-out signal 220V 380V Remote lock-out signal of leak detection control device F Ampere Burner terminal strip S mm Minimum gas pressure swicth Limit control device system stage remote control system Safety control device system Gas safety shut off valve...

  • Page 8: Burner Start-Up Cycle

    FIXING OF THE ELECTRICAL WIRES All the electrical wires, which are to be connected to the terminal block 4) (fig. 1) shall pass through the fair leads 3) (fig. 1) as for this scheme. - Single phase supply : fair lead Pg 13.5 - Adjustment thermostat : fair lead Pg 13.5 - Safety thermostat : fair lead Pg 13.5...

  • Page 9: Combustion Head Adjustment

    PROBE - IGNITION ELECTRODE POSITION Ignition electrode position Probe position 2 - 4 mm S7524 CAUTION: do not turn the ionization probe, maintain the drawing position; should it be close to the ignition electrode, damage may occur to the control box amplifier. COMBUSTION HEAD ADJUSTMENT Two separate adjustments have to be made: air and gas.

  • Page 10: Operational Diagram

    ADJUSTMENT OF THE AIR DAMPER MOTOR STOP - Blue lever This lever leaves the factory vertically positioned and corresponds to the complete closing of the air damper. Black lever A partial opening of the air damper might be obtained by moving leftwards this lever (+ on the label).

  • Page 11: Combustion Checks

    COMBUSTION CHECKS It is advisable to not exceed 10% of CO (gas with calorific value of 8600 kcal/m ), in order to avoid the risk that small changes of the adjustments due, for instance, at draught variation, may cause com- bustion with insufficient air and consequently formation of CO.
  • Page 12 BURNER STARTING DIFFICULTIES AND THEIR CAUSES Signal Problem Possible cause Recommended remedy 2 blinks Once the pre-purg- 1 - The operation solenoid lets little gas . Increase ing phase and safety through time have passed, 2 - One of the two solenoid valves does Replace the burner goes into not open.
  • Page 13 Signal Problem Possible cause Recommended remedy 10 blinks The burner does not 32 - Incorrect electrical wiring..Check switch on, and the lockout appears The burner goes into 33 - Defective control box... . . Replace lockout 34 - Presence of electromagnetic .

  • Page 14: Normal Operation / Flame Detection Time

    NORMAL OPERATION / FLAME DETECTION TIME The control box has a further function to guarantee the correct burner operation (signal: GREEN LED perma- nently on). To use this function, wait at least ten seconds from the burner ignition and then press the control box button for a minimum of 3 seconds.
  • Page 15 OPERATING FAULT DIAGNOSTICS The control box has a self-diagnostic system, which easily allows identifying the operating faults (RED LED signal). ITo use this function, wait at least ten seconds from the safety lock out, and then press the reset button for a minimum of 3 seconds.
  • Page 16 RIELLO S.p.A. I-37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.riello.it http:// www.riello.com Subject to modifications...

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3752282

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