Riello Burners 3751882 Installation, Use And Maintenance Instructions Download

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5862

BURNER ELECTRICAL WIRING

(carried out in the factory)

D2656

CMV

Fan motor contactor

Protection against radio interference

Relay

Burner terminal strip

Fan motor

Air pressure switch

RMG

Control box

Overload

Suppressor

Ionisation probe

Ignition transformer

Burner earth

KEY TO LAYOUT

TTENTION

In the case of phase-phase feed, a

bridge must be fitted on the control box

terminal board between terminal 6 and

the earth terminal.

Summary of Contents for 3751882

Page 1: ...2915862 1 Installation use and maintenance instructions Gas burner CODE MODEL TYPE 3751882 GAS 6 518 T80 ...

Page 2: ...e phase 380 V 10 10 60Hz with neutral Motor 3 4 A 380 V Ignition transformer Primary 1 8A 220V Secondary 1 x 8 kV 30 mA Absorbed electrical power 1 9 kW 1 Air shutter control 2 Air shutter lock nut 3 Control box re set button 4 Fair leads 5 Wiring terminal block 6 Re set push button of the motor overload relay 7 Air pressure switch 8 Gas pressure test point Fig 1 8 7 5 4 3 2 1 S7513 6 Length avail...

Page 3: ...nd withdrawing the group A from the holding bars 3 Fix the group B to the boiler front plate 4 using the gasket 5 provided as acces sory 2 3 5 4 1 A B S7499 1 Gas pipe line 7 Gas shut off valve 2 Cock valve 8 Burner 3 Filter 9 Gas safety shut off valve 4 Pressure stabilizer 10 Gas leak control device 5 Pressure test point 11 Isolator joint 6 Minimal gas pressure switch 5 8 7 9 5 6 4 3 10 2 1 S7514...

Page 4: ...in 800 kW it is necessary a gas pressure of 11 mbar and the combustion head set as indicated at page 7 If the combustion chamber is pressurized at 2 mbar the pressure detected at the test point 8 is 11 2 13 mbar If this value is too high for very low gas pipework pressures the gas gear 6 page 7 could be more open Do not decrease the pressure at the coupling under the values shown in the diagram Ou...

Page 5: ...ce K1 Relay MB Burner terminal strip MV Fan motor PA Air pressure switch RMG Control box RT Overload S Suppressor SO Ionisation probe TA Ignition transformer TB Burner earth KEY TO LAYOUT ATTENTION In the case of phase phase feed a bridge must be fitted on the control box terminal board between terminal 6 and the earth terminal ...

Page 6: ...ving the metal weldnuts from the pre sheared holes and inserting a commun fair lead for the passage and the clamping of the leads NOTES Do not exchange the neutral wire with the phase avoid the plug pin connection Carry out a safe earth connection Check the stop of the burner by opening the boiler thermostat and the burner lock out by disconnecting the lead from the flame probe WARNING When closin...

Page 7: ...ent pressure by turning slowly clockwise the knob till reaching the burner lock out Thereafter turn the knob anticlockwise for 1 mbar and repeat the burner start up for checking the regularity if lock out intervenes turn the knob anticlockwise for 0 5 mbar CAUTION do not turn the ionization probe maintain the drawing position should it be close to the ignition elec trode damage may occur to the co...

Page 8: ... the plate 4 Tighten the screws 1 Gas setting Loosen the screw 5 move the ring 6 so that the pointer 7 is coincident with the desired set point 8 Tighten the screw 5 Attention the set point number is the same for air and gas setting and is given by the following diagram Example the burner is installed on a boiler of 810 kW assuming an efficiency of 90 the burner output should be 900 kW From the di...

Page 9: ...he burner normally supplies a higher current value so that no check is needed However if a measurement of the ionization current is required it is necessary to disconnect the probe lead and insert a d c microamperometer MOTOR LOCK OUT This is caused by the thermal protector relay in case of overloading or by the lacking of the phase To clear pushdown the appropriate knob after having removed the p...

Page 10: ...ailed The burner does not pass through the pre purge peri od and the control box goes to lock out The air pressure switch does not change over it has failed or the air pressure is too low combustion head bad set Flame simulation exists or the flame really lights The burner does not start at the thermostat closing be cause of Gas is not supplied The gas pressure switch does not close incorrectly ad...

Page 11: ...lame signal Electrical supply lower than 170V Lock out Extraneous light Key Off Yellow Green Red SIGNAL PROBABLE CAUSE 2 flashes The flame does not stabilise at the end of the safety time faulty ionisation probe faulty or soiled gas valves neutral phase exchange faulty ignition transformer poor burner regulation insufficient gas 3 flashes Min air pressure switch does not close air pressure switch ...

Page 12: ...RIELLO S p A Via degli Alpini 1 I 37045 Legnago VR Tel 39 0442 630111 Fax 39 0442 630375 http www rielloburners com Subject to modifications ...

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Riello Burners 3751882, Installation, Use And Maintenance Instructions

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