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 Technical description of the burner Technical data Model RLS 160/E-EV RLS 200/E-EV Output High MBtu/hr 3542 - 7000 (6440*) 5207 - 8870 (8055*) 25.3 - 50 (46*) 37.2 - 63.3 (57.5*) Delivery MBtu/hr 1176 2100 Fuel # 2 Fuel oil - Natural gas Gas pressure at maximum delivery...
Technical description of the burner Burner dimensions The maximum dimensions of the burners are given in Fig. 2. The maximum dimension of the burner when open, without casing, is give in measurement I. Inspection of the combustion head requires the burner to be opened and the rear part withdrawn on the slide bars.
Technical description of the burner Firing rates MAXIMUM OUTPUT must be selected in area A) (Fig. 3) or area The firing rate area values have been obtained con- B) (only for RLS 160/E). sidering an ambient temperature of 68 °F, and an MINIMUM OUTPUT must not be lower than the minimum limit atmospheric pressure of 394”...
Technical description of the burner 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). AIR TEMPERATURE Altitude Altitude bar. press. bar.
Technical description of the burner Minimum furnace dimensions The firing rates were set in relation to certified test boilers. Example Fig. 4 indicates the diameter and length of the test combustion Output 2579 MBtu/hr: diameter 24 inch - length 6.6 ft. chamber.
Technical description of the burner 3.10 Burner description 20097659 Fig. 6 Combustion head 13 Flame inspection window Ignition electrodes 14 Low air pressure switch (differential operating type) Screw for combustion head adjustment 15 Slide bars for opening the burner and inspecting the combus- Sleeve tion head Fan motor...
Page 15
Technical description of the burner 25 Gas train flange Three types of burner failure may occur: 26 Boiler mounting flange Flame safeguard lock-out 27 Flame stability disk If the flame safeguard alarm 51)(Fig. 6) lights up, it indicates 28 Screw securing fan to sleeve that the burner is in lock-out.
Technical description of the burner 3.11 Control box for the air/fuel ratio (LMV36...) Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes must be observed! WARNING The LMV36... is a safety device! Do not open, interfere with or modify the unit.
Page 17
Technical description of the burner Technical data LMV36... basic unit Mains voltage AC 120 V -15 % / +10 % Mains frequency 50 / 60 Hz ±6 % Power consumption < 30 W (typically) Safety class I, with parts according to II and III to DIN EN 60730-1 Terminal loading Unit fuse F1 (internally) 6.3 AT...
Page 18
Technical description of the burner Operation sequence of the burner Operation Startup Shutdown Valve proving TSA2 TSA1 Phase number Safety limit thermostat (STB) Control thermostat or pressurestat (R) Flame signal (FS) Air pressure switch (LP) Pressure switch-min (Pmin) Pressure switch-max (Pmax) Valve proving / leakage test (P LT) POC (alternative to Pmax) Motor (M)
Technical description of the burner 3.12 Actuators (SQM33.5...) Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes should be observed! WARNING Do not open, interfere with or modify the actua- tors! All activities (mounting, installation and service work, etc.) must be performed by qualified staff.
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 Burner raising In order to lift the burner, proceed as follows: The manufacturer declines any and every respon- screw the two extension bars 1)(Fig. 10) on the pins 2); sibility for any possible lifting movements, different place the two plates 3) fix them on the relevant ring nuts 4). from those indicated in this manual.
Installation Securing the burner to the boiler Detach the combustion head from the burner, (Fig. 12): disconnect the oil pipes by unscrewing the two connectors 6); install the extension bars 31)(Fig. 6, page 12) and re-screw loosen the 4 screws 3) and remove the cover 1); the screws 2) including the safety plate 15);...
Installation RLS 200/E (Fig. 14) In order to extract the internal combustion head, proceed as fol- lows: remove screw 1)(Fig. 14); pull the internal part 2) until the gas distributor level (detail 3); turn anti-clockwise (about 90°) the internal part 4) and then extract completely the internal combustion head.
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 Riello in the Instruction and warning booklet should be used. It is advisable to replace nozzles every year during regular maintenance operations.
Installation 4.9.2 Adjusting the nozzle flow rate The nozzle flow rate varies according to the fuel pressure on the nozzle return. Diagram (Fig. 21) indicates this relationship for type A4 return flow nozzles with pump delivery pressure of 290 PSI. See Fig. 21: Horizontal axis: PSI, nozzle return pressure Vertical axis:...
Installation 4.10 Electrode and ignition pilot adjustment Place the pilot and electrode as shown in Fig. 22. ELECTRODE The pilot works correctly at pressures ranging from 6 - 12” WC. Make sure that the electrodes are positioned as shown in Fig. 24. WARNING 1 3/ 8'' IGNITION PILOT...
Installation 4.12 Light oil supply 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 4.12.3 Hydraulic connections The pumps are equipped with a by-pass that separates return line with suction line (Fig. 28). The pumps are installed on the burner with the by-pass closed by screw 6)(Fig. 49, page 37). 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 4.13 Gas line Explosion danger due to fuel leaks in the presence of a flammable source. Precautions: avoid knocking, attrition, sparks and heat. Make sure 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 4.14.1 Gas pressure RLS 160/E D3188 The adjacent diagrams are used to calculate manifold pressure taking into account combustion chamber pressure. Gas manifold pressure measured at test point 1)(Fig. 32), with: • combustion chamber at 0” WC; • burner operating at maximum output; •...
Installation 4.15 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 4.15.1 Supply cables and external connections passage If the cover is still present, remove it and proceed with the electrical wiring. All the cables to be connected to the burner are fed through the grommets. See figure on the right. The use of the cable grommets can take various forms.
Installation 4.16 Thermal relay calibration Depending on the burner type, there are two different thermal re- 4.16.2 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 4.17 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 Adjustments before first firing (gas) Adjustment of the combustion head has been illustrated on page 21. In addition, the following adjustments must also be made: open manual valves up-stream from the gas train. ...
Start-up, calibration and operation of the burner Final calibration of the pressure switches 5.7.1 Air pressure switch The air pressure switch is connected in differential (Fig. 45) and is activated by both the negative pressure of the air intake and the air pressure from the fan.
Start-up, calibration and operation of the burner 5.7.3 Minimum gas pressure switch The purpose of the minimum gas pressure switch is to prevent the burner from operating in an unsuitable way due to too low gas pres- sure. Adjust the minimum gas pressure switch (Fig. 47) after having ad- justed the burner, the gas valves and the gas train stabiliser.
Start-up, calibration and operation of the burner Burner starting Operating control closes, the motor starts. The pump 3)(Fig. 49) 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 Flame signal measurement Check the flame signal through the parameter 954, as indicated in Fig. 50. The displayed value is expressed in percentage. The value during the operation must be higher than 24%. If at the burner start-up the value is higher or equal of 18%, the burner locks out due to the extraneous light.
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.
Maintenance Flame inspection window Flame sensor Clean the flame inspection window 1)(Fig. 51). In order to reach the flame sensor, proceed as follows: extract the sensor 2)(Fig. 52); clean the glass cover from any dust that may have accumu- lated.
Maintenance Opening the burner Loosen screws 1)(Fig. 53) and with draw the cover 2); disengage the swivel coupling 7) from the graduated sector; Disconnect the electrical supply from the burner by disconnect the light-oil pipes 8); means of the main system switch. ...
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.
Appendix - Accessories Appendix - Accessories • Gas train according to UL Standards The installer is responsible for the supply and instal- lation of any required safety device(s) not indicated in this manual. WARNING 20095042...
Appendix - Burner start up report Appendix - Burner start up report Model number: Serial number: Project name: Start-up date: Installing contractor: Phone number: GAS OPERATION : Low Fire Gas Supply Pressure: High Fire : Low Fire Main Power Supply: High Fire Control Power Supply: CO: Low Fire...
Page 52
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...