LOW NOX MODULATING DUAL FUEL BURNERS

Transcription

1 OW OX MODUATIG DUA FUE BURERS RS/M MX SERIES RS 68/M MX FS1 2/35 86 kw RS 68/M MX FS2 2/35 86 kw RS 12/M MX FS1 3/6 12 kw RS 12/M MX FS2 3/6 12 kw RS 16/M MX FS1 3/ kw The RS/M MX series of burners covers a firing range from 2 to 184 kw, and they have been designed for use in hot or superheated water boilers, hot air or steam generators, diathermic oil boilers. Operation is two stage at the oil side and modulating at the gas side with the installation of a PID logic regulator and respective probes. RS/M MX series burners guarantees high efficiency levels in all the various applications, thus reducing fuel consumption and running costs. Optimisation of sound emissions is guaranteed by the special design of air suction circuit and the use of sound proofing material. The exclusive design ensures reduced dimensions, simple use and maintenance. A wide range of accessories guarantees elevated working flexibility. TS64UK1

2 TECHICA DATA Model RS 68/M MX RS 12/M MX RS 16/M MX Approval Emissions Electrical data Fuel / air data Burner operation mode Modulation ratio at max. output Servomotor run time Heat output Working temperature net calorific value Oil viscosity delivery Pump delivery Atomised pressure Fuel temperature Fuel preheater net calorific value G2 density gas delivery net calorific value G25 density gas delivery net calorific value PG density gas delivery Fan Air temperature Electrical supply Auxiliary electrical supply Control box Total electrical power Auxiliary electrical power Heaters electrical power Protection level Pump motor electrical power Rated pump motor current Pump motor start up current Pump motor protection level Fan motor electrical power Rated fan motor current Fan motor start up current Fan motor protection level Ignition transformer Operation Sound pressure Sound power CO emission grade of smoke indicator Oil CxHy emission Ox emission CO emission G2 Ox emission Directive Conforming to Certification type s kw Mcal/h C min./max. kwh/kg mm 2 /s (cst) kg/h type kg/h bar max. C kwh/m 3 kg/m 3 m 3 /h kwh/m 3 kg/m 3 m 3 /h kwh/m 3 kg/m 3 m 3 /h type max C Ph/Hz/V Ph/Hz/V type kw kw kw IP kw A A IP kw A A IP type V1 V2 I1 I2 db (A) W mg/kwh Bacharach mg/kwh mg/kwh mg/kwh mg/kwh two stages light oil two stages progressive/modulating gas 1 2 (light oil) / 1 4 (gas) SQ / /6 12 3/ / / / /4 11, / / / J6 C J7 C 23/ /4 23 (at 12 bar) 12 6 O,71 3/6 12 8,6,78 35/ ,8 2,2 3/ /8 214 reverse blade fan straight blade fan 3 1,5 5,9 3,4 35, /5/234~(±%) 1/5/23~(±%) F (FS1) GK 16 (FS2) 3,7 1,5 44,55 3,6 9,5 44 2,2 8,8 5,1 52,8 3, V 2x5 kv 1,9A 3mA 6, 4,5 15,8 9, ,8 FS1 intermittent (1 stop each 24 h) FS2 continuos (1 stop each 72 h) < < 1 < < 185 < < 8 99/396 88/336 72/23 EEC E 267 E 676 8,5 CE 85BP175 CE 85B625 Reference conditions: Temperature: 2 C Pressure: mbar Altitude: m a.s.l. oise measured at a distance of 1 meter. Since the Company is constantly engaged in the production improvement, the aesthetic and dimensional features, the technical data, the equipment and the accessories can be changed. This document contains confidential and proprietary information of RIEO S.p.A. Unless authorised, this information shall not be divulged, nor duplicated in whole or in part. 2

3 FIRIG RATES RS 12/M MX RS 16/M MX RS 68/M MX mm H 2 O hpa (mbar) Mcal/h kw Useful working field for choosing the burner Modulation range Test conditions conforming to E 267 E 676: Temperature: 2 C Pressure: mbar Altitude: m a.s.l. 3

4 FUE SUPPY GAS TRAI The burners are fitted with a butterfly valve to regulate the fuel, controlled by a variable profile cam servomotor. Fuel can be supplied either from the right or left hand sides. A maximum gas pressure switch stops the burner in case of excess pressure in the fuel line. The gas train can be selected to best fit system requirements depending on the fuel output and pressure in the supply line. The gas train can be Multibloc type (containing the main components in a single unit) or Composed type (assembly of the single components). MUTIBOC gas train type MBD P MUTIBOC gas train type MBC 12 P P2 6 5 P COMPOSED gas train P2 7 5 P Example of the variable profile cam 1 Gas input pipework 2 Manual valve 3 Antivibration joint 4 Pressure gauge with pushbutton cock 5 Filter 6 Pressure regulator (vertical) 7 Minimum gas pressure switch 8 VS safety solenoid (vertical) 9 VR regulation solenoid (vertical) Two settings: firing output (rapid opening) maximum output (slow opening) Gasket and flange supplied with the burner 11 Gas adjustment butterfly valve 12 Burner 13 Seal control mechanism for valves 89. According to standard E 676, the seal control is compulsory for burners with maximum output above 12 kw (in gas train with seal control) 14 Gas trainburner adapter 15 Maximum gas pressure switch P1 Combustion head pressure P2 Pressure downstream from the regulator P3 Pressure upstream from the filter Gas train supplied separately, with the code given in the table 1 Installer s responsibility 12 P P2 5 P

5 Y Y Example of gas train COMPOSED type without seal control Øo Øi Z X Example of gas train MUTIBOC type without seal control Øo Øi Z X Gas trains are approved by standard E 676 together with the burner. The overall dimensions of the gas train depends on how they are constructed. The following table shows the maximum dimensions of the gas trains that can be fitted to RS/M MX burners, intake and outlet diameters and seal control if fitted. Please note that the seal control can be installed as an accessory, if not already installed on the gas train. The maximum gas pressure of gas train Multibloc type is 36 mbar, and that one of gas train Composed type is 5 mbar. MUTIBOC guarantees a range of pressure toward the burner from 3 to 6 mbar. For version D 65 and D 8 is from 2 to 4 mbar. The range of pressure in the MUTIBOC with flange can be modified choosing the stabiliser spring (see gas train accessory). ame Code Ø i Ø o X mm Y mm Z mm Seal Control COMPOSED MUTIBOC GAS TRAIS GAS TRAIS MBD 42 MBD 42 CT MBC 12 SE 5 MBC 12 SE 5 CT MBC 19 SE 65 FC MBC 19 SE 65 FC CT MBC 3 SE 8 FC MBC 3 SE 8 FC CT D 65 D 65 D 8 D D 65 D 65 D 8 D

6 PRESSURE DROP DIAGRAM The diagrams indicate the minimum pressure drop of the burners with the various gas trains that can be matched with them; at the value of these pressure drop add the combustion chamber pressure. The value thus calculated represents the minimum required input pressure to the gas train. RS 68/M MX P Combustion head and gas train Combustion head mbar G MB 42 MB 12 SE ATURA GAS G Gas train MBD 42 MBD 42 CT MBC 12 SE 5 MBC 12 SE 5 CT Code Adapter Seal Control Accessory 15 Pressure drop kcal/h X kw RS 12/M MX P Combustion head and gas train Combustion head mbar G MB 42 MBC 12 SE MBC 19 SE G Gas train MBD 42 MBD 42 CT MBC 12 SE 5 MBC 12 SE 5 CT MBC 19 SE 65 FC MBC 19 SE 65 FC CT Code Adapter Seal Control Accessory 2 Pressure drop kcal/h X RS 16/M MX P Combustion head and gas train Combustion head mbar Pressure drop kw G G kcal/h X MB 42 MBC 12 SE MBC 19 SE MBC 3 SE kw Gas train MBD 42 MBD 42 CT MBC 12 SE 5 MBC 12 SE 5 CT MBC 19 SE 65 FC MBC 19 SE 65 FC CT MBC 3 SE 8 FC MBC 3 SE 8 FC CT Code Adapter Seal Control Accessory note Please contact the Riello Burner Technical Office for different pressure levels from those above indicated and refer to the technical manual for the correct choice of the spring. 6

7 2" 3" 6" 4" SEECTIG THE FUE SUPPY IES The following diagram enables pressure drop in a preexisting gas line to be calculated and to select the correct gas train. The diagram can also be used to select a new gas line when fuel output and pipe length are known. The pipe diameter is selected on the basis of the desired pressure drop. The diagram uses methane gas as reference; if another gas is used, conversion coefficient and a simple formula (on the diagram) transform the gas output to a methane equivalent (refer to figure A). Please note that the gas train dimensions must take into account the back pressure of the combustion chamber during operations. Control of the pressure drop in an existing gas line or selecting a new gas supply line. The methane output equivalent is determined by the formula fig. A on the diagram and the conversion coefficient. Once the equivalent output has been determined on the delivery scale ( V ), shown at the top of the diagram, move vertically downwards until you cross the line that represents the pipe diameter; at this point, move horizontally to the left until you meet the line that represents the pipe length. Once this point is established you can verify, by moving vertically downwards, the pipe pressure drop of on the botton scale below (mbar). By subtracting this value from the pressure measured on the gas meter, the correct pressure value will be found for the choice of gas train. Example: gas used G25 gas output 9.51 mc/h pressure at the gas meter 2 mbar gas line length 15 m conversion coefficient.62 (see figure A) equivalent methane output V = 9.51 = mc/h.62 once the value of has been identified on the output scale ( V ), moving vertically downwards you cross the line that represents 1" 1/4 (the chosen diameter for the piping); from this point, move horizontally to the left until you meet the line that represents the length of 15 m of the piping; move vertically downwards to determine a value of 1.4 mbar in the pressure drop botton scale; subtract the determined pressure drop from the meter pressure, the correct pressure level will be found for the choice of gas train; correct pressure = ( 21.4 ) = 18.6 mbar V , PIPE EGTH (m) 2" 1/2 V = Gas output mc/h f 1" 1" 1/4 1" 1/2 3/4 f 1 G2 =,62 G25 {1,18 G31 1/2 Figure A 1,4,1,2,3,4,5,6,7, PRESSURE DROP (mbar) PIPE DIAMETER 7

8 HYDRAUIC CIRCUIT The burners are fitted with three valves (a safety valve and two oil delivery valves) along the oil line from the pump to the nozzle. A thermostatic control device, on the basis of required output, regulates oil delivery valves opening, allowing light oil passage trough the valves and to the nozzle. Delivery valves open contemporary to the air damper opening, controlled by a servomotor. The pumping group is fitted whit a pump, an oil filter and a regulating valve: through this it is possible to manaully adjusts atomised pressure, which in factory is preset at 12 bar. Example of light oil pump of RS 16/M MX burner RS/M MX VS V2 V1 PV U1 U2 P P VS V1 V2 PV U1 U2 Pump with filter and pressure regulator on the output circuit Safety valve on the output circuit 1st stage valve 2nd stage valve ozzle holder 1st stage nozzle 2nd stage nozzle 8

9 SEECTIG THE FUE SUPPY IES The fuel feed must be completed with the safety devices required by the local norms. The table shows the choice of piping diameter, depending on the difference in height between the burner and the tank and their distance. MAXIMUM EQUIVAET EGTH FOR THE PIPIG [m] Model RS 16/M MX Diameter piping Ø12mm Ø14mm Ø16mm +H, H (m) max (m) max (m) max (m) +4, , , , , , , , , , V P +H cm H Ø P V Difference in height pumpfoot valve Internal pipe diameter Max. height m Height 4 m Burner Burner pump Filter Manual shut off valve Suction pipework Bottom valve Remote controlled rapid manual shut off valve (compulsory in Italy) Type approved shut off solenoid valve (compulsory in Italy) Return pipework Check valve H 6 note With ring distribution oil systems, the feasible drawings and dimensioning are the responsibility of specialised engineering studios, who must check compatibility with the requirements and features of each single installation. 9

10 VETIATIO The ventilation circuit produces low noise levels with high performances pressure and air output, in despite of the compact dimensions. The special design of the air suction circuit and the use of soundproofing material keeps noise level very low. A variable profile cam connects the fuel and air regulations, ensuring high fuel efficiency at all firing ranges. A minimum air pressure switch stops the burner when there is an insufficient quantity of air at the combustion head. Example of the servomotor for air/gas setting COMBUSTIO HEAD Different lengths of the combustion head can be chosen for the RS/M MX series of burners. The choice depends on the thickness of the front panel and the type of boiler. Depending on the type of generator, check that the penetration of the head into the combustion chamber is correct. The internal positioning of the combustion head can easily be adjusted to the maximum defined output by adjusting a screw fixed to the flange. note The burners of RS/M MX series are not suitable to be installed on boiler with reverse flame chamber. Example of RS 16/M MX burner combustion head. Flame dimensions 4 3 max min 2 1,5 D Flame lenght (m) 2 1 D max D min Burner output (MW) 1,5 Flame diameter (m) Example: Burner thermal output = 2 kw; flame (m) = 2,7 m (medium value); D flame (m) =,8 m (medium value)

11 ADJUSTMET BURER OPERATIO MODE The RS/M MX series of burners can have two stage operation at the oil side and modulating operation at the gas side with the installation of a PID logic regulator and respective probes. When burner is supplied with light oil a modulation ratio of 2:1 is reached thanks to the two nozzles solution; when burner is supplied with gas modulation ratio is 6:1. The air is adapted to the servomotor rotations. Example of a regulator On two stage operation, the burner gradually adjusts output to the requested level, by varying between the two preset levels (see figure A). Two stage operation Output Controlled variable C bar MAX MI time time Figure A In modulating operation, normally required in steam generators, in superheater boilers or diathermic oil burners, a specific regulator and probes are required. These are supplied as accessories that must be ordered separately. The burner can work for long periods at intermediate output levels (see figure B). Modulating operation Output Controlled variable Figure B C bar MAX MI Time Time START UP CYCE Thermostat closes. The motor starts running The servomotor opens the air damper Prepurge with air damper open The servomotor takes the air damper to the firing position. 7 Preignition 76 Solenoid security valve VS and V1 1st stage valve open; 1st stage flame 79 After 3 firing the ignition transformer switches off (if flame is detected, otherwise there is a lockout) 88 If heat request is not yet satisfied, 2nd stage solenoid valve V2 opens and at the same time servomotor open completely the air damper. The starting cycle comes to an end. 2nd stage flame. RS /M MX 11

12 WIRIG DIAGRAMS Electrical connections must be made by qualified and skilled personnel, according to the local regulations. Example of the terminal board for electrical connections for the RS/M MX model TWO STAGE PROGRESSIVE OPERATIO RS/M MX without seal control MB PE S3 R3 T1 T2 P1 P2 T6 T7 T8 3 V21 V11 M PT1 PT3 PT5 DC+ DC GD D1 PE PE ph ~ 5Hz 4/23V M 3 ~ F TS P ϑ T6A S 1ph ~ 5Hz 23V PS T P ϑ I PG P TR ϑ P VR VS MB Burner terminal board TS Safety thermostat S External lockout signal I Manual switch T Threshold thermostat TR High/low flame setting thermostat T6A 6A fuse F Fuse (see table A) ead section (see table A) PG Minimum gas pressure switch PS ockout reset button VR Adjustment valve VS Safety valve RS/M MX with seal control MB PE PE ph ~ 5Hz 4/23V M 3 ~ F S3 TS P ϑ T6A S 1ph ~ 5Hz 23V PS R3 T1 T P ϑ I T2 P1 P2 T6 T7 T8 3 V21 V11 S1 TR ϑ P VR M PT1 PT3 PT5 VS DC+ DC GD D1 PE MB Burner terminal board TS Safety thermostat S External lockout signal S1 External lockout signal on the seal control I Manual switch T Threshold thermostat TR High/low flame setting thermostat T6A 6A fuse F Fuse (see table A) ead section (see table A) PG Minimum gas pressure switch PS ockout reset button VR Adjustment valve VS Safety valve VPS Seal control T8 T7 T6 B5 PE VPS PG P The following table shows the supply lead sections and the type of fuse to be used. Model F A mm 2 RS 68/M MX 23V T16 2,5 4V T 1,5 RS 12/M MX 23V T16 2,5 4V T 1,5 RS 16/M MX 23V T25 2,5 4V T2 2,5 Table A 12

13 MODUATIG OPERATIO temperature probe MB RS/M MX a b c d BT Q13 Q14 1 M1 G1+ I1 U1 G+ G Q Y1 Y2 GD D1 TE RWF 4 MB Burner auxiliary terminal board S External lockout signal I Manual switch BT Temperature probe F Fuse (see table A) ead section (see table A) RWF4 Regulator (installed on the burner) MODUATIG OPERATIO pressure probe MB RS/M MX T2 T1 M PT1 PT3 PT5 DC+ DC T6 T8 T7 GD D1 PE T2 T1 M PT1 PT3 PT5 DC+ DC T6 T8 T7 GD D1 PE 1 2 PE 4/2mA PE BP Q13 Q14 1 M1 G1+ I1 U1 G+ RWF 4 G Q Y1 Y2 GD D1 TE MB Burner auxiliary terminal board S External lockout signal I Manual switch BP Pressure probe F Fuse (see table A) ead section (see table A) RWF4 Regulator (installed on the burner) 13

14 EMISSIOS The emission data has been measured at maximum output, according to E 676 and E 267 standard. The Ox emissions of RS/M MX burners are conforming to class 3 of E 676 (gas) and Class 2 of E 267 (oil). mg/kwh 25 2 Ox EMISSIOS mg/kwh 25 2 CO EMISSIOS db(a) 8 OISE EMISSIOS RS/M MX RS/M MX RS/M MX Gas working ight oil working Combustion head operating diagram of RS/M MX model In the RS/M MX burners part of the gas is distributed through outlets which are perpendicular to the air flow, while the remaining gas is injected directly into the centre of the flame. This prevents no homogeneous concentrations in the flame with areas of high oxidation, producing very stable flame with gradual and progressive combustion as the flame develops, thus giving polluting emission values below even the most restrictive norm values. 14

15 OVERA DIMESIOS (mm) BURER B A C O O(1) E F F(1) H D V I M Model A B C D E F F (1) H I M O O (1) V RS 68/M MX RS 12/M MX RS 16/M MX Rp (1) ength with extended combustion head. BURER BOIER MOUTIG FAGE P Q R Model RS 6812/M MX RS 16/M MX P Q R M12 M16 PACKAGIG Z X Y Model X X(1) Y Z kg RS 68/M MX RS 12/M MX RS 16/M MX (1) ength with extended combustion head. 15

16 ISTAATIO DESCRIPTIO Installation, start up and maintenance must be carried out by qualified and skilled personnel. All operations must be performed in accordance with the technical handbook supplied with the burner. BURER SETTIG All the burners have slide bars, for easier installation and maintenance. After drilling the boilerplate, using the supplied gasket as a template, dismantle the blast tube from the burner and fix it to the boiler. Adjust the combustion head. Fit the gas train choosing this on the basis of the maximum boiler output and following the diagrams included in the burner instruction handbook. Refit the burner casing to the slide bars. Install the nozzle choosing this on the basis of the maximum boiler output and following the diagrams included in the burner instruction handbook. Check the position of the electrodes. Close the burner, sliding it up to the flange, keeping it slightly raised to avoid the flame stability disk rubbing against the blast tube. EECTRICA AD HYDRAUIC COECTIOS AD START UP The burners are supplied for connection to two pipes fuel supply system. Connect the ends of the flexible pipes to the suction and return pipework using the supplied nipples. Make the electrical connections to the burner following the wiring diagrams included in the instruction handbook. Prime the pump by turning the motor (after checking rotation direction if it is a three phase motor). Adjust the gas train for first start. On start up, check: Pressure pump and valve unit regulator (to max. and min.) Gas pressure at the combustion head (to max. and min. output) Combustion quality, in terms of unburned substances and excess air. 16

17 BURER ACCESSORIES ozzles The nozzles must be ordered separately. The following table shows the features and codes on the basis of the maximum required fuel output. ozzles type 6 B Burner Rated delivery kg/h (*) GPH ozzle code 21,2 5, ,3 5, ,5 6, ,6 6, RS 6812/M MX 29,7 7, ,8 7, ,9 8, ,1 8, ,2 9, ,3 9, ,4, ,7 11, ,9 12, ,1 13, ,4 14, ,6 15, RS/M MX 67,9 16, ,1 17, ,4 18, ,6 19, ,8 2, ,3 22, ,8 24, RS 16/M MX (*) ozzle rated delivery is reffered to atomized pressure 1,3 26, ,8 28,

18 Spacer kit If burner head penetration into the combustion chamber needs reducing, varying thickness spacers are available, as given in the following table: Spacer kit Burner Spacer thickness S (mm) Kit code RS/M MX S Continuous ventilation kit If the burner requires continuous ventilation in the stages without flame, a special kit is available as given in the following table: Continuous ventilation kit Burner Kit code RS/M MX 394 Accessories for modulating operation To obtain modulating operation, the RS 16/M MX series of burners requires a regulator with three point outlet controls. The following table lists the accessories for modulating operation with their application range. Burner RS/M MX Regulator type RWF 4 Regulator code 3212 The relative temperature or pressure probes fitted to the regulator must be chosen on the basis of the application. Probe type Temperature PT Pressure 4 2 ma Pressure 4 2 ma Range ( C) (bar) 5 C 2,5 bar 16 bar Probe code

19 Depending on the servomotor fitted to the burner, a threepole potentiometer ( Ω) can be installed to check the position of the servomotor. The KITS available for the various burners are listed below. Burner RS/M MX Kit code 321 Sound proofing box If noise emission needs reducing even further, soundproofing boxes are available, as given in the following table: Burner RS 6812/M MX RS 16M/MX Sound proofing box Box type C3 C4 Box code GAS TRAI ACCESSORIES Adapters When the diameter of the gas train is different from the set diameter of the burners, an adapter must be fitted between the gas train and the burner. The following table lists the adapters for various burners. Adapters Burner Gas train Dimensions Adapter code RS 12/M MX RS 16/M MX MBC 19 SE 65 FC (CT*) D 65 2"1/2 1" 1/2 2" 3825 RS 16/M MX MBC 3 SE 8 FC (CT*) D 8 2"1/2 2" 3826 * with and without seal control 19

20 Seal control kit To test the valve seals on the gas train, a special seal control kit is available. The valve seal control device is compulsory (E 676) on gas trains to burners with a maximum output over 12 kw. The seal control is type VPS 54. Burner RS/M MX Seal control kit Gas train MBD 42 MBC 12 SE 5 MBC 19 SE 65 FC MBC 3 SE 8 FC Kit code 3367 Stabiliser spring Accessory springs are available to vary the pressure range of the gas train stabilisers. The following table shows these accessories with their application range. Stabiliser springs Gas train MBC 19 SE 65 FC (CT)* MBC 3 SE 8 FC (CT)* * with and without seal control Spring White from 4 to 2 mbar Red from 2 to 4 mbar Black from 4 to 8 mbar Green from 8 to 15 mbar Code Please refer to the technical manual for the correct choice of spring. 2

21 SPECIFICATIO A specific index guides your choice of burner from the various models available in the RS/M MX series. Below is a clear and detailed specification description of the product. DESIGATIO OF SERIES Series : R Fuel : S atural Gas ight oil S ight oil/atural Gas Heavy oil Size Setting : /1 Single stage /E Electronic cam... Two stage /P Proportioning air/gas valve /M Modulating /EV Electronic cam predisposed for variable speed (with inverter) Emission :... Class 1 E267 E676 MZ Class 2 E267 E676 BU Class 3 E267 E676 MX Class 2 E267 Class 3 E676 Head : TC Standard head T Extended head Diagnostic : P ed panel ST Status panel Flame control system : FS1 Standard (1 stop every 24 h) FS2 Continuous working (1 stop every 72 h) Electrical supply to the system : 1/23/5 1/23V/5Hz 3/23/5 3/23V/5Hz 3/4/5 3/4V/5Hz 3/234/5 3/23V/5Hz 3/4V/5Hz 3/22/6 3/22V/6Hz 3/38/6 3/38V/6Hz 3/2238/6 3/22/6Hz 3/38V/6Hz Auxiliary voltage : 23/56 23V/56Hz 1/56 1V/56Hz ID: Differential switch R S 16 /M MX TC FS1 3/234/5 23/5 BASIC DESIGATIO EXTEDED DESIGATIO AVAIABE BURER MODES RS 68/M MX TC FS1 3/234/5 23/5 RS 68/M MX T FS1 3/234/5 23/5 RS 68/M MX TC FS2 3/234/5 23/5 RS 68/M MX T FS2 3/234/5 23/5 RS 12/M MX TC FS1 3/234/5 23/5 RS 12/M MX T FS1 3/234/5 23/5 RS 12/M MX TC FS2 3/234/5 23/5 RS 12/M MX T FS2 3/234/5 23/5 RS 16/M MX TC FS1 3/234/5 23/5 RS 16/M MX T FS1 3/234/5 23/5 Other versions are available on request. 21

22 PRODUCT SPECIFICATIO Burner: Monoblock forced draught OW Ox dual fuel burner with two stage operation at the oil side and two stage progressive or modulating operation at the gas side, with a specific kit, fully automatic, made up of: air suction circuit lined with soundproofing material centrifugal fan with high performance and low sound emissions air damper for air flow setting and butterfly valve for regulating gas output controlled by a servomotor with variable cam starting motor at 28 rpm, threephase 4V with neutral, 5Hz low emission combustion head, that can be set on the basis of required output, fitted with: stainless steel end cone, resistant to corrosion and high temperatures ignition electrodes gas distributor flame stability disk maximum gas pressure switch to stop the burner in the case of excess pressure on the fuel supply line minimum air pressure switch stops the burner in case of insufficient air quantity at the combustion head gears pump for high pressure fuel supply pump starting motor oil safety valves two oil valves (1st and 2nd stage) flame control panel UV photocell for flame detection burner on/off selection switch manual or automatic output increase/decrease selection switch Oil/Gas selector flame inspection window slide bars for easier installation and maintenance protection filter against radio interference IP 44 electric protection level. Gas train: Fuel supply line, 2 configuration: MUTIBOC with integrated filter minimum gas pressure switch. Fuel supply line D 65 e D8 configuration: filter MUTIBOC minimum gas pressure switch. Conforming to: 89/336/EEC directive (electromagnetic compatibility) 73/23/EEC directive (low voltage) 92/42/EEC directive (performance) 9/396/EEC directive (gas) 98/37/EEC directive (machinery) E 676 (gas burners) E 267 (oil burners). Standard equipment: 1 gas train gasket 1 flange gasket 4 screws for fixing the flange 1 thermal screen 4 screws for fixing the burner flange to the boiler 2 flexible pipes for connection to the oil supply network 2 nipples for connection to the pump with gaskets Instruction handbook for installation, use and maintenance Spare parts catalogue. 22

23 Available accessories to be ordered separately: ozzles Spacer kit Continuous ventilation kit RWF 4 output regulator Pressure probe 2.4 bar Pressure probe 16 bar Temperature probe 5 C Potentiometer kit for the servomotor Gas train adapter Seal control kit Stabiliser spring Sound proofing box. 23

24 ISO 91 Cert. n. 61 RIEO S.p.A. Via degli Alpini, EGAGO (VR) Italy Tel Fax Internet: [email protected] Since the Company is constantly engaged in the production improvement, the aesthetic and dimensional features, the technical data, the equipment and the accessories can be changed. This document contains confidential and proprietary information of RIEO S.p.A. Unless authorised, this information shall not be divulged, nor duplicated in whole or in part.