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Installation, use and maintenance instructions Dual fuel gas oil/ gas burners Two stage operation CODE MODEL TYPE 20034842 - 20034843 RLS 160/M MX 781 T 20035573 (3) - 10/2012...
Contents Declaration....................................3 Information and general warnings............................4 Information about the instruction manual ........................4 2.1.1 Introduction.................................. 4 2.1.2 General dangers................................4 2.1.3 Danger: live components............................. 4 Guarantee and responsibility............................5 Guidance for the use of bio fuel blends up to 10%...................... 5 2.3.1 Information and general instructions ...........................
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Contents Electrical system..................................24 Notes on safety for the electrical wiring ........................24 Electrical connections ..............................25 Current to the UV photocell............................25 Start-up, calibration and operation of the burner ........................26 Notes on safety for the first start-up ...........................26 Adjustment before first firing (gas oil operation) ......................26 7.2.1 Combustion head setting ............................26 7.2.2...
The quality is guaranteed by a quality and management system certified in accordance with UNI EN ISO 9001. Manufacturer's Declaration RIELLO S.p.A. declares that the following products comply with the NOx emission limits specified by German standard “1. BIm- SchV release 26.01.2010”.
Information and general warnings Information and general warnings Information about the instruction manual 2.1.1 Introduction 2.1.3 Danger: live components The instruction manual supplied with the burner: This symbol indicates operations which, if not car- is an integral and essential part of the product and must not ried out correctly, lead to electric shocks with le- be separated from it;...
All components within the hydraulic circuit suitable for manual, operating negligence, incorrect installa- bio fuel use and supplied by Riello will be identified as Bio com- tion and carrying out of non authorised modifica- patible. No warranty is given in relation to the use of components...
Bio fuel delivery. If this is not completed then due to the In no event shall Riello (and its subsidiaries) be liable for any in- hydroscopic nature of Bio fuel, it will effectively clean the...
Safety and prevention Safety and prevention Introduction The burners have been designed and built in compliance with the type and pressure of the fuel, the voltage and frequency of the current regulations and directives, applying the known technical electrical power supply, the minimum and maximum deliveries for rules of safety and envisaging all the potential danger situations.
Technical description of the burner Technical data Model RLS 160/M MX Type 781 T Flame stability disk WITH Flame stability disk WITHOUT circular sectors 3)(Fig. 11) circular sectors 3)(Fig. 11) Output Gas oil stage 965 - 1846 1132 - 2013 Delivery (min - max) kg/h...
Technical description of the burner Electrical data Motor IE1 Electrical supply V/Ph/Hz 400/3/50 Auxiliary power supply V/Ph/Hz 230/3/50 Electric motors 2860 Fan motor 4500 Pump motor 220/240 Pump motor capacitor µF Ignition transformer V1 - V2 230 V - 2 x 5 kV I1 - I2 1.9 A - 30 mA Electrical power consumption...
Technical description of the burner Overall dimensions The maximum dimensions of the burner are given in Fig. 2. The maximum dimension of the burnerwhen open, without cas- ing, is give in measurement I. Bear in mind that 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 Test boiler The firing rates were set in relation to special test boilers, accord- ing to EN 676 regulations. Fig. 4 indicates the diameter and length of the test combustion chamber. D715 Example: output 650 Mcal/h: diameter 60 cm - length 2 m. 4.9.1 Commercial boilers The burners are suitable for operation on either flame-inversion...
4 - Flange fixing screws M 10 x 40 to the butterfly valve lines suitable for bio fuel use. WARNING Please contact Riello for further information. 1 - Thermal insulation screen 4 - Screws to secure the burner sleeve with flange to the...
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 manual ment, proceed with the installation operations.
10%" within the burner technical manual). be suitable for bio fuel use (check with Riello if in doubt). If a Bio blend is in use the installer must seek information...
Installation Blast tube length The length of the blast tube must be selected according to the in- For boilers with front flue passes 15)(Fig. 10) or flame inversion dications provided by the manufacturer of the boiler, and in any chambers, protective fettling in refractory material 13) must be in- case it must be greater than the thickness of the boiler door com- serted between the boiler fettling 14) and the blast tube 12).
12 bar 14 bar In order to guarantee that emissions do not vary, recommended 10.0 38.4 42.4 46.1 502.9 and/or alternative nozzles specified by Riello in the Instruction 10.5 40.4 44.6 48.4 529.0 and warning booklet should be used. 11.0 42.3...
Installation The nozzle for the 1 stage of operation is the one lying beneath the firing electrodes (Fig. 14). Make sure that the electrodes are positioned as shown in Fig. 14. WARNING Refit the burner to the slide bars 3)(Fig. 15) at approximately 100 mm from the sleeve 4) - burner positioned as shown in Fig.
You are advised to use additional filters on the fuel supply line. Riello recommends a good quality fuel filter at the tank (Fig. 17 - Fig. 18) and a secondary filter CAUTION (100 for gas oil and 15 for kerosene) are used...
Installation 5.11.2 Single-pipe circuit In order to obtain single-pipe working it is necessary to unscrew the return hose, remove the by-pass screw 6)(Fig. 19) and then screw the plug 7)(Fig. 19). The distance “P” must not exceed 10 meters in order to avoid subjecting the pump's seal to excessive strain;...
WARNING Please contact Riello for further information. contained in the suction line. – Start the burner by closing the control devices, with switch 1)(Fig.
Installation 5.15 Gas supply 5.15.1 Gas line The gas train must be connected to the gas attachment 1)(Fig. 23), using flange 2), gasket 3) and screws 4) supplied with the burner. The gas train can enter the burner from the right or left side, de- pending on which is the most convenient.
Installation 5.16 Gas pressure The Tab. K shows minimum pressure losses along the gas sup- ply line depending on the maximum burner output operation. 3 p (mbar) 1 p 2 p 3970146 3970181 3970147 3970148 3970149 (mbar) (mbar) 3970160 3970182 3970161 3970162 3970163...
Electrical system Electrical system 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.
Pg 13.5 Three-phase power supply destination and by qualified personnel. 7 pole socket input WARNING Riello S.p.A. declines all liability for modifications 4 pole socket input or connections other than those shown on these 6 pole socket input diagrams.
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 Combustion head 10 bar: in order to reduce fuel delivery. This adjustment is possible only if the surrounding tem- The adjustment of the combustion head already carried out perature remains above 0°C. (page 26) need not be altered unless the 2 stage delivery of the burner is changed.
Start-up, calibration and operation of the burner Burner starting (gas operation) If voltage is present, then immediately stop the burner and check It is advisable to first set the burner for operating electrical connections. on oil and then for gas. Execute the fuel exchange when the burner is off.
Start-up, calibration and operation of the burner Adjusting air delivery Progressively adjust the end profile of cam 4)(Fig. 36) by turning the screws 7). Turn the screws clockwise to increase air delivery. Turn the screws counter-clockwise to reduce air delivery. 7.7.3 MIN burner output Min output must be selected within the firing rate range shown on...
Start-up, calibration and operation of the burner 7.7.4 Intermediate outputs Adjustment of gas delivery No adjustment of gas delivery is required Adjustment of air delivery Press the key 2)(Fig. 35 at page 28) “output increase” a little so that the servomotor turns by about 15°. Adjust the screws until optimal combustion is obtained.
Start-up, calibration and operation of the burner Gas combustion checks It is better to set the burner with CO not higer than 10% (gas with It must be not higher than 100 mg/kWh. Pci 8600 kcal/m This way avoiding a loss of calibration setting (for example draft variation) that could cause combustion with little air and the pro- duction of CO.
Maintenance Maintenance Notes on safety for the maintenance The periodic maintenance is essential for the good operation, Before carrying out any maintenance, cleaning or checking oper- safety, yield and duration of the burner. ations: 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 If the pump is found to be responsible, check to make sure that GAS OPERATION the filter is not dirty. The vacuometer is installed upstream from the filter and consequently will not indicate whether the filter is Gas leaks clogged or not.
Maintenance Opening the burner Remove the screws 10) from the two slide bars 4). Fit the two extensions onto the slide bars 4). Disconnect the electrical supply from the Replace the screws 10) onto the two slide bars. burner.
Faults - Possible causes - Solutions Faults - Possible causes - Solutions Find a list of faults, causes and possible solutions for a set of failures that may occur and result in irregular burner operation or no functioning at all. If a burner malfunction is detected, first of all: •...
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Faults - Possible causes - Solutions GAS OIL OPERATION SYMBOL FAULT PROBABLE CAUSE SUGGESTED REMEDY Defective control box Replace Ignition electrode wrongly adjusted Adjust Grounded electrode due to broken insulation Replace Pump/motor coupling broken Replace Ignition transformer defective Replace The flame ignites normally but Defective photocell or control box Replace photocell or control box the burner locks out when the...
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Faults - Possible causes - Solutions GAS OPERATION SYMBOL FAULT PROBABLE CAUSE SUGGESTED REMEDY The burner does not start Close all switches and check con- No electrical power supply nections A limiter or safety control device is open Adjust or replace Control box lock-out Reset control box Control box fuse blown...
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Faults - Possible causes - Solutions GAS OPERATION SYMBOL FAULT PROBABLE CAUSE SUGGESTED REMEDY The burner repeats the start- Mains gas pressure is near the valve to which the ing cycle without lock out min. gas pressure switch gas is adjusted. The repeated drop in pressure which follows valve opening causes temporary opening of the Reduce operating pressure of...
Appendix - Accessories (optional) Appendix - Accessories (optional) OUTPUT POWER REGULATOR KIT RWF 40 With the modulating operation, the burner continually adapts the Two components should be ordered: power to the request for heat, ensuring great stability for the pa- •...
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Appendix - Electrical panel layout Key to layouts Control box Protection against radio interference Output power regulator RWF40 DC input 4...20 mA DC input 4...20 mA for modifying the remote setpoint Burners components Boiler components Pressure probe Pressure probe Remote setpoint voltage divider Thermocouple probe Probe Pt100 with 2 wires Probe Pt100 with 3 wires...