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 Model RL 70/M RL 100/M RL 130/M Main electrical supply 460/3/60 V/Ph/Hz Control circuit power supply 120/1/60 Fan and pump motor 3490 3480 3480 W - HP 1100 - 1.5 2200 - 3 2200 - 3...
The burners is supplied skid mounted. Outer dimensions of packaging are indicated in Fig. 1. The weight of the burner complete with packaging is indicated in Tab. F. inch RL 70/M 45 9/32” 23 5/8” 31 3/16” RL 100/M 45 9/32”...
Technical description of the burner Burner description D2349 Fig. 3 Ignition electrodes 19 Power switch for different operations: automatic - manual - off Combustion head Button for: power increase - power reduction Screw for combustion head adjustment 20 Valve assembly with pressure regulator on nozzle return Screw for fixing fan to flange 21 Terminal strip Pressure gauge for pressure on nozzle return...
Technical description of the burner Firing rates During operation, burner output varies between: NOTE: – minimum output: area A; The firing rate areas given in Fig. 4 have been reduced by 10% – maximum output: area B (and C for model RL 130/M). with respect to the maximum range that can be reached.
Technical description of the burner 3.8.1 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) AIR TEMPERATURE Altitude Altitude bar. press. bar.
Do not open, interfere with or modify the unit. • Observe the maximum permissible detector cable lengths. Riello S.p.A. will not assume responsibility for any damage resulting from unauthorized inter- • The ionization probe is not protected against electric shock ference! hazard.
Installation Installation Notes on safety for the installation After carefully cleaning all around the area where the burner will The installation of the burner must be carried out be installed, and arranging the correct lighting of the environ- by qualified personnel, as indicated in this manu- ment, proceed with the installation operations.
D455 Fig. 7 lation. The range of lengths available, L (inch), is as in the Tab. I: inch Long blast tube RL 70/M 7 9/32” 10 27/32” - 12 13/16” 1/2 W Model Short blast tube (with kit) RL 100/M 7 9/32”...
Installation Securing the burner to the boiler Disassemble the blast tube 9)(Fig. 8) from the burner 6) by pro- ceeding as follows: The burner-boiler seal must be airtight. loosen the four screws 3) and remove the cover 1); remove the screws 2) from the two slide bars 5); WARNING ...
Installation Nozzle The burner complies with the emission requirements of the UL 296 Standard. In order to guarantee that emissions do not vary, recommended and/or alternative nozzles specified by the manufacturer in the In- struction and warning booklet should be used. It is advisable to replace nozzles every year during regular maintenance operations.
Installation 4.7.4 Adjusting the nozzle flow rate NOTE: with a pump delivery pressure of 290 PSI, the pressure on the The nozzle flow rate varies according to the fuel pressure on the nozzle return must not exceed 246.5 PSI. nozzle return. The pressure difference between pump delivery and nozzle return Diagram (Fig.
5)(Fig. 16). D462 Example: RL 70/M, maximum light oil delivery = 16 GPH Diagram (Fig. 17) indicates that for a delivery of 16 GPH the RL 70/ M Model requires the combustion head to be set to approx. three Fig.
Installation 4.11 Hydraulic system Explosion danger due to fuel leaks in the presence of a flammable source. Precautions: avoid knocking, attrition, sparks and heat. Make sure that the fuel interception tap is closed before performing any operation on the burner. The fuel supply line must be installed by qualified personnel, in compliance with current standards and laws.
Installation 4.11.2 Hydraulic connections The pumps are equipped with a by-pass that connects the return line and suction line. The pumps are installed on the burner with the by-pass closed by screw 6)(Fig. 20). It is therefore necessary to connect both hoses to the pump. The pump seal will be damaged immediately if it is run with the return line closed and the by- pass screw inserted.
Installation 4.11.4 Pump Technical data Pump model SUNTEC J7 C Min. delivery rate at 290 PSI pressure 60.8 Delivery pressure range 145 - 304.5 Max. suction pressure “Hg Viscosity range 2.8 - 200 Max light oil temperature °F 194 (90 °C) Max.
Installation 4.12 Electrical wiring Notes on safety for the electrical wiring The electrical wiring must be carried out with the electrical supply disconnected. Electrical wiring must be carried out by qualified personnel and in compliance with the regulations currently in force in the country of destination.
Installation 4.12.1 Factory wiring diagram RL 70-100-130/M with burner mounted Siemens LAL control. D2815 Fig. 22 Continuous fan operation Change the wire connection from terminal 7 to terminal 1, move the jumper from terminals 12-13 to terminals 4-12 and remove the wire from terminal 13 of control box.
Installation 4.13 Thermal relay calibration Depending on the burner type, there are two different thermal re- 4.13.2 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 4.14 Motor connection at 208-230 or 460V WARNING: the motors, manufactured for 208-230/460 IE3 NEMA Premium Efficiency voltage, have the same connection than IE2/Epact motors, but different connection than IE1 motors no more star/delta but star/double star. Please, pay attention to the indications in case of modification of voltage, maintenance, or substitution. IE2/Epact - IE3 Nema Premium efficiency S8380 S8379...
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 Servomotor The servomotor gives simultaneous regulation of the air damper To open the servomotor, remove the screws and pull the cover out- through the adjustable profile cam 2)(Fig. 34) and the pressure ward (see Fig. 35). controller (Fig.
Start-up, calibration and operation of the burner 5.4.1 Cams and trim potentiometers functions Trim potentiometer POS Limits an intermediate operating position between MAX and MIN, Cam 1: 130° supplying power to the “P” terminal in the servomotor (through an Limits rotation towards maximum external command).
Start-up, calibration and operation of the burner Burner operation 5.6.1 Burner starting • Operating control closes, the motor starts. The pump 3)(Fig. 40) draws the fuel from the tank through the piping 1) and pumps it under pressure for delivery. The piston 4) rises and the fuel returns to the tank through the piping 5) - 7).
Start-up, calibration and operation of the burner Sequence of operation - LAL control box Switching times are given in seconds, in the burner start-up se- FULL MODULATION quence (see Tab. M). Switching times Seconds optional optional Tab. M Key for the times (Fig. 41 and Fig. 42) Pre-purge time with air damper open Safety time D2871...
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 Flame inspection window Clean the flame inspection window (Fig. 44). Flame sensor Clean the glass cover from any dust that may have accumulated. flame sensor 1)(Fig. 45) can be removed by pulling it outward forcefully. Servomotor Disengage the cam (Fig. 34 on page 28) from the servomotor and turn it backwards and forwards by hand to make sure it moves free- Nozzles It is advisable to replace nozzles once a year during periodical...
Maintenance 6.2.3 Fuel pump and/or couplings replacement As per Fig. 47, dimension A should be set: Model A (inch) RL 70/M 1/2” RL 100/M 5/16” RL 130/M 7/16” Tab. P D2854 Fig. 47 Opening the burner Loosen screws 1)(Fig. 48) and withdraw the cover 2);...
Faults - Probable causes - Solutions Faults - Probable causes - Solutions The control box is equipped with a lockout indicator (Fig. 49) that Lockout indicator turns during the start-up programme, and is visible from the small lockout window. Start-up sequence When the burner does not start or stops, due to a failure, the sym- b-b’...
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Faults - Probable causes - Solutions Symbol Fault Probable cause Suggested remedy The burner does not start A limit or safety control device is open Adjust or replace Control box lock-out Reset control box Adjust pressure switch or eliminate Oil pressure switch tripped pressure Motor protection tripped Reset thermal cut-out...
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Faults - Probable causes - Solutions Symbol Fault Probable cause Suggested remedy Firing with pulsations or flame Poorly adjusted head Adjust detachment, (lift off) delayed Poorly adjusted or dirty firing electrodes Adjust firing Poorly adjusted fan air gate: too much air Adjust Nozzle unsuited for burner or boiler See Nozzle Table...
Appendix - Burner start up report Appendix - Burner start up report Model number: Serial number: Project name: Start-up date: Installing contractor: Phone number: OIL OPERATION : Low Fire Oil supply pressure: High Fire : Low Fire Oil suction pressure: High Fire Control Power Supply: CO: Low Fire...
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RIELLO S.p.A. I-37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.riello.com RIELLO BURNERS NORTH AMERICA http://www.riello.ca 35 Pond Park Road 2165 Meadowpine Blvd Hingham, Massachusetts, Mississauga, Ontario U.S.A. 02043 1-800-4-RIELLO Canada L5N 6H6 Subject to modifications...