Information and general instructions Information and general instructions Information about the instruction manual 1.1.1 Introduction WARNING: MOVING PARTS The instruction manual supplied with the burner: This symbol indicates that you must keep limbs is an integral and essential part of the product and must not be away from moving mechanical parts;...
Information and general instructions 1.1.4 Delivery of the system and the instruction The system supplier must carefully inform the user about: – the use of the system; manual – any further tests that may be required before activating the When the system is delivered, it is important that: system;...
Safety and prevention Safety and prevention Introduction The burners have been designed and built in compliance with cur- the type and pressure of the fuel, the voltage and frequency of the rent regulations and directives, applying the known technical rules electrical power supply, the minimum and maximum deliveries for of safety and envisaging all the potential danger situations.
Technical description of the burner Overall dimensions The maximum dimensions of the burner are given in Fig. 2. The overall dimensions of the burner when open are indicated by L and R. Bear in mind that inspection of the combustion head requires the burner to be opened by rotating the rear part on the hinge.
Technical description of the burner Burner capacity 20162856 RLAS 1200 RLAS 1000 (*) Firing Rate for C-ETL Canadian Listing Burner power output - MBtu/hr Fig. 3 3.7.1 Procedure to refer burner operating condition at an altitude and/or at a combustion supporter air temperature different to the standard values (328 ft above sea level, 68 °F).
Technical description of the burner Minimum furnace dimensions The firing rate was obtained in special test boilers. Example: Fig. 4 indicates the diameter and length of the test combustion Output 26510 Mbtu/hr: - diameter 47.7 inch - length 20 ft. chamber.
Technical description of the burner Burner components 20147279 Fig. 5 Compressed air valve 25 Lever for movement of combustion head Air solenoid valve 26 Max gas pressure switch with pressure test point Air inlet pressure gauge 27 QRI flame detector Oil modulator and gas butterfly valve servomotor 28 Hinge for opening burner Oil modulator...
Technical description of the burner 3.10 Panel board description 20164636 Fig. 6 Horn 25 Plug/socket for flame sensor Relays 26 Plug/socket for air servomotor Control box transformer “T1” 27 Optional hole Control box for checking flame and air/fuel ratio 28 Electric joint for speed sensor Ignition transformer “TA”...
The AZL... display is a safety device! Avoid opening WARNING or modifying it, or forcing its operation. Riello S.p.A. cannot assume any responsibility for damage re- sulting from unauthorised interventions! The electronic cam is operated and programmed through the AZL5 interface...
To avoid accidents, material or environmental dam- age, observe the following instructions! The control box is a safety device! Avoid opening or WARNING modifying it, or forcing its operation. Riello S.p.A. cannot assume any responsibility for damage re- sulting from unauthorised interventions! Risk of explosion!
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Technical description of the burner Electrical connection of ionization probe and flame detector • Never run the detector cables together with other cables: – Line capacitance reduces the magnitude of the flame signal. It is important to achieve practically disturbance- and loss-free –...
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Technical description of the burner Operation sequence of the burner TSA1 Timer 1 Timer 2 TSA1 Fuel 1 (oil) Fuel selection Fuel 2 (gas) Controller - ON (internal + external) Air pressure switch (LP) Fan conductor contact (GSK) (CPI function with LMV52...) Start release - oil Ignition (Z) (alternative start signal)
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Technical description of the burner Key to the sequence diagrams: Assignment of times: Depending on the parameter, valve proving takes place: Postpurge lockout position between phase 62 and phase 70 or/and Max. time safety phase between phase 30 and phase 32. Min.
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Technical description of the burner Key to the sequence diagrams: Parameter: With / without pressure switch Permissible positioning range Parameter: Short / long preignition time for oil only Short / long oil pump – ON – time In Standby: actuator can travel within the permissible po- Delayed shutdown within TSA1 + TSA2 sitioning range, but is always driven to the home position.
Technical description of the burner 3.13 Servomotor (SQM48.4..) Important notes To avoid accidents, material or environmental damage, observe the following instructions! Avoid opening, modifying or forcing the actu- WARNING ators. All interventions (assembly and installation operations, assis- tance, etc.) must be carried out by qualified personnel. ...
Installation Installation Notes on safety for the installation After carefully cleaning all around the area where the burner will be The installation of the burner must be carried out by installed, and arranging the correct lighting of the environment, pro- qualified personnel, as indicated in this manual and ceed with the installation operations.
Installation Operating position The burner is designed to operate only in posi- Any other position could compromise the cor- tions 1 and 4 (Fig. 11). rect operation of the appliance. Installation 1 is preferable, as it is the only one ...
Installation Securing the burner to the boiler Prepare a suitable lifting system using the rings 3) The seal between burner and boiler must be air- after having removed the casing 1) unscrewing tight. screws 2)(Fig. 14). WARNING Insert the thermal protection supplied with the blast tube 4). ...
Installation Combustion head adjustment Changing the position of the head movement lever 1)(Fig. 16), we 20162848 can obtain different output firing rates (see Tab. K). FIRING RATES HEAD (MBtu/hr) POSITION RLAS 1000/EV RLAS 1200/EV 14000 20500 19156 25000 24312 29500 29468 34000 34624...
In order to guarantee that emissions do not vary, recom- kets, sealing compound, or tape. mended and/or alternative nozzles specified by Riello in the in- Be careful to avoid damaging the nozzle seal- struction and warning booklet should be used.
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Installation 4.11.2 Air atomiser unit (assisted atomisation) The Y-Jet atomiser unit has the following features: Disc type 24-S (Fluidics) Air/steam atomiser type 24-Y (Fluidics) Capnut 24 (Fluidics) The delivery range and pulverisation angles are given are given by the variants that are available for the element 2)(See the diagram Fig.
Installation 4.12 Light oil supply 4.12.2 The loop circuit Explosion danger due to fuel leaks in the presence A loop circuit consists of a loop of piping departing from and return- of a flammable source. ing to the tank with an auxiliary pump that circulates the fuel under Precautions: avoid knocking, attrition, sparks and pressure.
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Installation 4.12.3 Hydraulic connections Air Valve 20162869 Make sure that the flexible hoses to the pump sup- ply and return line are installed correctly. CAUTION Follow the instructions below: tighten the flexible hoses with the supplied gas- kets. WARNING ...
Installation 4.14 Gas train supplied It must be type-approved according to required standards and is The fuel supply line must be installed by qualified supplied separately from the burner. personnel, in compliance with current standards Explosion danger due to fuel leaks in the presence and laws.
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Installation 4.14.2 Gas pressure 4.14.3 Pilot - gas train connection The burner is fitted with a dedicated gas train that is fixed to the The pressure at the head of the burner from refers pipe coupling. to zero in the combustion chamber; to obtain true pressure, measured by a U-type manometer, add WARNING the counter-pressure of the boiler.
Installation 4.15 Electrical wiring 4.15.1 Notes on safety for the electrical wiring The electrical wiring must be carried out with the electrical supply disconnected. Electrical wiring must be made in accordance with the regulations currently in force in the country of destination and by qualified personnel.
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Installation 4.15.3 Supply cables and external connections passage All the cables to be connected to the burner are fed through the grommets (Fig. 30). The use of the cable grommets can take vari- ous forms. By way of example we indicate the following mode (according to UL795): Three phase power supply with 1”...
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Installation 4.15.4 Shielding the connections For the burner to operate correctly, where required, it is necessary to shield the connections. WARNING To shield the motor connection, proceed as follows: to access the motor casing, loosen the four screws 1)(Fig. 31) and remove the cover 2).
Installation 4.16 Installation of shielded cables In the case of clamp type A: unscrew the screw until space is created for inserting the shielding of the shielded cable A1)(Fig. 34); insert the shielded cable with the shielding inside the clamp A2);...
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Installation 4.16.1 Inverter connection Treatment of cables Countermeasures against cable noise Following, it is reported an example how to con- nect the Inverter. The treatment of cables is the most important countermeasure. For further information, please refer to the relevant The machinery manufacturers are requested WARNING Inverter instruction manual.
Installation 4.17 Thermal relay calibration Depending on the burner type, there are two different thermal re- 4.17.2 Electronic thermal relay lays: To reset, in the case of an intervention of the thermal relay, – Electro-mechanical thermal relay (used for single phase mo- press the button “RESET”...
Installation 4.18 Motor connection at 460V the motors, manufactured for 460 IE3 NEMA Pre- 20108739 mium Efficiency voltage, have the same connec- tion than IE2/Epact motors. WARNING Please, pay attention to the indications in case of modification of voltage, maintenance, or substitution. Fig.
Start-up, calibration and operation of the burner Start-up, calibration and operation of the burner Notes on safety for the first start-up The first start-up of the burner must be carried out Check the correct working of the adjustment, com- by qualified personnel, as indicated in this manual mand and safety devices.
Start-up, calibration and operation of the burner Burner start-up Feed electricity to the burner via the disconnecting switch on When the limit thermostat (TL) is closed, the “CALL FOR the boiler panel. HEAT” 2)(Fig. 45) signal must be on and the burner starts the ...
Start-up, calibration and operation of the burner 5.6.1 Direction of motor rotation When the burner starts, check the direction of the motor rotation, as indicated in Fig. 47. If the burner is not equipped with a device to check WARNING the phases sequence, the motor could rotate incor- rectly.
Start-up, calibration and operation of the burner Final calibration of the pressure switches 5.8.1 Air pressure switch For the RLAS 1000-1200 burner model, the air pressure switch is connected in absolute mode and is activated by the positive pres- sure from the fan (Fig. 48). D3854 Adjust the air pressure switch (Fig.
Start-up, calibration and operation of the burner Final checks (with the burner working) Open the control limit operation The burner must stop Open the high limit operation Rotate the maximum gas pressure switch knob to the mini- ...
Maintenance Maintenance Notes on safety for the maintenance The periodic maintenance is essential for the good operation, safe- Before carrying out any maintenance, cleaning or checking opera- ty, yield and duration of the burner. tions: It allows you to reduce consumption and polluting emissions and to keep the product in a reliable state over time.
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Maintenance Burner Clean the outside of the burner. 20162894 Measurement of detector current Measurement of the detector’s signal (Fig. 52) with a Voltmeter is not normally required since the flame signal’s intensity is shown on the AZL...display and operating unit. Min.
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Maintenance 6.2.5 Electrical panel maintenance Turn off the burner's power supply using the main system switch. DANGER In the event of maintenance/replacement of components in the low- er part of the electrical panel, access is possible via the front of the panel itself, following the directions below: ...
Maintenance Opening the burner Wait for the components in contact with heat sourc- Disconnect the electrical supply from the burner by es to cool down completely. means of the main system switch. DANGER For the burner opening, see “Access to head internal part” on page 22.
Faults - Possible causes - Solutions Faults - Possible causes - Solutions If faults arise in ignition or operations, the burner performs a “safety stop”, which is signalled by the red burner lockout LED. The display visualises alternately the lockout code and the relative diagnostic.