forced draught gas burners · 2016. 1. 5. · 887t rs 800/m blu 1200 - 8100 kw 887t80 rs 800/m blu...

Installation, use and maintenance instructions

Forced draught gas burners

Modulating operation

CODE MODEL TYPE

3899400 - 3899410 RS 300/M BLU 849T

3899500 - 3899510 RS 400/M BLU 850T

3899100 - 3899110 RS 500/M BLU 856T

20006131 RS 500/M BLU 856T80

20040330 RS 650/M BLU 1123T

3911000 - 3911010 RS 800/M BLU 887T

20008894 RS 800/M BLU 887T80

GB

20041790 (8) - 12/2014

Translation of the original instructions

Contents

1 Declarations...................................... .......................................................................................................................................... 3

2 Information and general warnings.................. .......................................................................................................................... 4

2.1 Information about the instruction manual .................................................................................................................... 42.1.1 Introduction.................................................................................................................................................................. 42.1.2 General dangers.......................................................................................................................................................... 42.1.3 Other symbols ............................................................................................................................................................. 42.1.4 Delivery of the system and the instruction manual...................................................................................................... 5

2.2 Guarantee and responsibility....................................................................................................................................... 5

3 Safety and prevention.............................. .................................................................................................................................. 6

3.1 Introduction.................................................................................................................................................................. 6

3.2 Personnel training ....................................................................................................................................................... 6

4 Technical description of the burner ............... .......................................................................................................................... 7

4.1 Burner designation ...................................................................................................................................................... 7

4.2 Models available.......................................................................................................................................................... 7

4.3 Burner categories - Countries of destination ............................................................................................................... 8

4.4 Technical data ............................................................................................................................................................. 8

4.5 Electrical data.............................................................................................................................................................. 9

4.6 Maximum dimensions................................................................................................................................................ 10

4.7 Firing rates ................................................................................................................................................................ 11

4.8 Test boiler.................................................................................................................................................................. 12

4.9 Burner equipment...................................................................................................................................................... 12

4.10 Burner description ..................................................................................................................................................... 13

4.11 Electrical panel description........................................................................................................................................ 144.11.1 Fan motor rotation ..................................................................................................................................................... 14

4.12 RMG88.62C2 control box.......................................................................................................................................... 15

4.13 LKS 310-35 servomotor ............................................................................................................................................ 16

5 Installation ...................................... .......................................................................................................................................... 17

5.1 Notes on safety for the installation ............................................................................................................................ 17

5.2 Handling .................................................................................................................................................................... 17

5.3 Preliminary checks .................................................................................................................................................... 17

5.4 Operating position ..................................................................................................................................................... 18

5.5 Removal of the locking screws from the shutter........................................................................................................ 18

5.6 Preparing the boiler ................................................................................................................................................... 185.6.1 Boring the boiler plate ............................................................................................................................................... 185.6.2 Blast tube length........................................................................................................................................................ 18

5.7 Securing the burner to the boiler ............................................................................................................................... 19

5.8 Access to head internal part...................................................................................................................................... 19

5.9 Probe-electrode position ........................................................................................................................................... 19

5.10 Combustion head adjustment.................................................................................................................................... 20

5.11 Gas feeding ............................................................................................................................................................... 225.11.1 Gas feeding line ........................................................................................................................................................ 225.11.2 Gas train.................................................................................................................................................................... 235.11.3 Gas train installation.................................................................................................................................................. 235.11.4 Gas pressure............................................................................................................................................................. 24

5.12 Electrical wiring ......................................................................................................................................................... 255.12.1 Supply cables and external connections passage .................................................................................................... 25

6 Start-up, calibration and operation of the burner .. ............................................................................................................... 26

6.1 Notes on safety for the first start-up .......................................................................................................................... 26

6.2 Adjustments prior to ignition ...................................................................................................................................... 26

6.3 Burner start-up .......................................................................................................................................................... 26

6.4 Burner ignition ........................................................................................................................................................... 26

1 20041790GB

Contents

6.5 Servomotor adjustment..............................................................................................................................................27

6.6 Air / fuel adjustment ...................................................................................................................................................276.6.1 Maximum output adjustment ......................................................................................................................................276.6.2 Minimum output adjustment .......................................................................................................................................286.6.3 Intermediate output adjustment .................................................................................................................................28

6.7 Pressure switch adjustment .......................................................................................................................................296.7.1 Air pressure switch - check CO..................................................................................................................................296.7.2 Maximum gas pressure switch...................................................................................................................................296.7.3 Minimum gas pressure switch....................................................................................................................................29

6.8 Operation sequence of the burner .............................................................................................................................306.8.1 Burner start-up ...........................................................................................................................................................306.8.2 Operation ...................................................................................................................................................................306.8.3 Ignition failure.............................................................................................................................................................306.8.4 Burner flame goes out during operation.....................................................................................................................30

6.9 Burner start-up cycle diagnostics ...............................................................................................................................316.9.1 Resetting of control box and diagnostics use ............................................................................................................316.9.2 Control box reset........................................................................................................................................................316.9.3 Visual diagnostics ......................................................................................................................................................316.9.4 Software diagnostics..................................................................................................................................................31

6.10 Normal operation / flame detection time ....................................................................................................................32

7 Maintenance ....................................... .......................................................................................................................................33

7.1 Notes on safety for the maintenance .........................................................................................................................33

7.2 Maintenance programme ...........................................................................................................................................337.2.1 Maintenance frequency..............................................................................................................................................337.2.2 Checking and cleaning...............................................................................................................................................33

7.3 Opening the burner ....................................................................................................................................................34

7.4 Closing the burner......................................................................................................................................................34

8 Faults - Probable causes - Solutions ................ ......................................................................................................................35

A Appendix - Accessories ............................ ...............................................................................................................................37

B Appendix - Electrical panel layout................. ..........................................................................................................................39

20041790 2 GB

Declarations

1 Declarations

Declaration of conformity in accordance with ISO / I EC 17050-1

Manufacturer: RIELLO S.p.A.

Address: Via Pilade Riello, 737045 Legnago (VR)

Product: Forced draught gas burners

Model: RS 300/M BLURS 400/M BLURS 500/M BLURS 650/M BLURS 800/M BLU

These products are in compliance with the following Technical Standards:

EN 676

EN 12100

and according to the European Directives:

GAD 2009/142/EC Gas Devices Directive

MD 2006/42/EC Machine Directive

LVD 2006/95/EC Low Voltage Directive

EMC 2004/108/EC Electromagnetic Compatibility

Such products are marked as follows:

EC-0085BR0480 RS 300/M BLUEC-0085BR0481 RS 300/M BLUEC-0085BO0341 RS 500/M BLUEC-0085BT0337 RS 650/M BLUEC-0085BT0337 RS 800/M BLU

The quality is guaranteed by a quality and manageme nt system certified in accordance with UNI EN ISO 90 01.

Manufacturer's Declaration

RIELLO S.p.A. declares that the following products comply with the NOx emission limits specified by German standard “1. BImSchV revision 26.01.2010 ”.

Product Type Model Output

Forced draught gas burners 859T RS 300/M BLU 500 - 3800 kW860T RS 400/M BLU 950 - 4590 kW856T RS 500/M BLU 1000 - 5170 kW856T80 RS 500/M BLU 1000 - 5170 kW1123T RS 650/M BLU 1400 - 6500 kW887T RS 800/M BLU 1200 - 8100 kW887T80 RS 800/M BLU 1200 - 8100 kW

Legnago, 03.09.2014 Executive General ManagerRIELLO S.p.A. - Burner Department

Research & Development DirectorRIELLO S.p.A. - Burner Department

Mr. U. Ferretti Mr. R. Cattaneo

3 20041790GB

Information and general warnings

2.1 Information about the instruction manual

2.1.1 IntroductionThe instruction manual supplied with the burner:➤ is an integral and essential part of the product and must not

be separated from it; it must therefore be kept carefully forany necessary consultation and must accompany the burnereven if it is transferred to another owner or user, or toanother system. If the manual is lost or damaged, anothercopy must be requested from the Technical Assistance Ser-vice of the area;

➤ is designed for use by qualified personnel;➤ offers important indications and instructions relating to the

installation safety, start-up, use and maintenance of theburner.

Symbols used in the manual

In some parts of the manual you will see triangular DANGERsigns. Pay great attention to these, as they indicate a situation ofpotential danger.

2.1.2 General dangersThe dangers can be of 3 levels , as indicated below.

2.1.3 Other symbols

Abbreviations used

Ch. ChapterFig. FigurePage PageSec. SectionTab. Table

2 Information and general warnings

DANGER

Maximum danger level!This symbol indicates operations which, if not car-ried out correctly, cause serious injury, death orlong-term health risks.

WARNING

This symbol indicates operations which, if not car-ried out correctly, may cause serious injury, deathor long-term health risks.

CAUTION

This symbol indicates operations which, if not car-ried out correctly, may cause damage to the ma-chine and/or injury to people.

DANGER

DANGER: LIVE COMPONENTS

This symbol indicates operations which, if not car-ried out correctly, lead to electric shocks with le-thal consequences.

DANGER: FLAMMABLE MATERIAL

This symbol indicates the presence of flammablematerials.

DANGER: BURNING

This symbol indicates the risks of burns due tohigh temperatures.

DANGER: CRUSHING OF LIMBS

This symbol indicates the presence of movingparts: danger of crushing of limbs.

WARNING: MOVING PARTS

This symbol indicates that you must keep limbsaway from moving mechanical parts; danger ofcrushing.

DANGER: EXPLOSION

This symbol signals places where an explosive at-mosphere is present. An explosive atmosphere isdefined as a mixture of dangerous substanceswith air, under atmospheric conditions, in the formof gases, vapours, mist or dust in which, after ig-nition has occurred, combustion spreads to theentire unburned mixture.

PERSONAL PROTECTION EQUIPMENT

These symbols indicate the equipment that mustbe worn and kept by the operator for protectionagainst threats against safety and/or health whileat work.

MOUNT CASING

This symbol indicates that it is mandatory tomount casing again after maintenance, cleaningor checks.

ENVIRONMENTAL PROTECTION

This symbol gives indications for the use of themachine with respect for the environment.

IMPORTANT INFORMATION

This symbol indicates important information thatyou must bear in mind.

➤ This symbol indicates a list.

20041790 4 GB

Information and general warnings

2.1.4 Delivery of the system and the instruction manual

When the system is delivered, it is important that:➤ the instruction manual is delivered to the user by the system

manufacturer, with the recommendation to keep it in theroom where the heat generator is to be installed.

➤ The instruction manual shows:– the serial number of the burner;

– the address and telephone number of the nearest Assis-tance Centre.

➤ The system supplier must carefully inform the user about:– the use of the system; – any further tests that may be required before activating the

system; – maintenance, and the need to have the system checked at

least once a year by a representative of the manufactureror another specialised technician.To ensure a periodic check, the manufacturer recom-mends the drawing up of a Maintenance Contract.

2.2 Guarantee and responsibility

The manufacturer guarantees its new products from the installa-tion date, in accordance with the regulations in force and/or thesales contract. At the moment of the first start-up, check that theburner is integral and complete.

In particular, the rights to the guarantee and the responsibility willno longer be valid, in the event of damage to things or injury topeople, if such damage/injury was due to any of the followingcauses:➤ incorrect installation, start-up, use and maintenance of the

burner;➤ improper, incorrect or unreasonable use of the burner;➤ intervention of unqualified personnel;➤ carrying out of unauthorised modifications on the equipment;➤ use of the burner with safety devices that are faulty, incor-

rectly applied and/or not working;➤ installation of untested supplementary components on the

burner;➤ powering of the burner with unsuitable fuels;➤ faults in the fuel supply system;➤ use of the burner even following an error and/or an irregular-

ity;➤ repairs and/or overhauls incorrectly carried out;➤ modification of the combustion chamber with inserts that

prevent the regular development of the structurally estab-lished flame;

➤ insufficient and inappropriate surveillance and care of thoseburner components most likely to be subject to wear andtear;

➤ the use of non-original components, including spare parts,kits, accessories and optional;

➤ force majeure.

The manufacturer furthermore declines any and every re-sponsibility for the failure to observe the content s of thismanual.

.........................................................................................

.........................................................................................

.........................................................................................

.........................................................................................

WARNING

Failure to observe the information given in thismanual, operating negligence, incorrect installa-tion and carrying out of non authorised modifica-tions will result in the annulment by themanufacturer of the guarantee that it supplies withthe burner.

5 20041790GB

Safety and prevention

3.1 Introduction

The burners have been designed and built in compliance withcurrent regulations and directives, applying the known technicalrules of safety and envisaging all the potential danger situations.

It is necessary, however, to bear in mind that the imprudent andclumsy use of the equipment may lead to situations of death riskfor the user or third parties, as well as the damaging of the burneror other items. Inattention, thoughtlessness and excessive confi-dence often cause accidents; the same applies to tiredness andsleepiness.

It is a good idea to remember the following:➤ The burner must only be used as expressly described. Any

other use should be considered improper and therefore dan-gerous.

In particular:

it can be applied to boilers operating with water, steam, diather-mic oil, and to other users expressly named by the manufacturer;

the type and pressure of the fuel, the voltage and frequency of theelectrical power supply, the minimum and maximum deliveries forwhich the burner has been regulated, the pressurisation of thecombustion chamber, the dimensions of the combustion cham-ber and the room temperature must all be within the values indi-cated in the instruction manual.➤ Modification of the burner to alter its performance and desti-

nations is not allowed.➤ The burner must be used in exemplary technical safety con-

ditions. Any disturbances that could compromise safety mustbe quickly eliminated.

➤ Opening or tampering with the burner components is notallowed, apart from the parts requiring maintenance.

➤ Only those parts envisaged by the manufacturer can bereplaced.

3.2 Personnel training

The user is the person, body or company that has acquired themachine and intends to use it for the specific purpose. He is re-sponsible for the machine and for the training of the people work-ing around it.

The user:➤ undertakes to entrust the machine exclusively to suitably

trained and qualified personnel;➤ undertakes to inform his personnel in a suitable way about

the application and observance of the safety instructions.With that aim, he undertakes to ensure that everyone knowsthe use and safety instructions for his own duties;

➤ Personnel must observe all the danger and caution indica-tions shown on the machine.

➤ Personnel must not carry out, on their own initiative, opera-tions or interventions that are not within their province.

➤ Personnel must inform their superiors of every problem ordangerous situation that may arise.

➤ The assembly of parts of other makes, or any modifications,can alter the characteristics of the machine and hence com-promise operating safety. The manufacturer thereforedeclines any and every responsibility for any damage thatmay be caused by the use of non-original parts.

In addition:

3 Safety and prevention

WARNING

The manufacturer guarantees safety and properfunctioning only if all burner components are intactand positioned correctly.

➤ the user must take all the measures neces-sary to prevent unauthorised people gainingaccess to the machine;

➤ the user must inform the manufacturer iffaults or malfunctioning of the accident pre-vention systems are noticed, along with anypresumed danger situation.

➤ Personnel must always use the personal pro-tective equipment envisaged by legislationand follow the indications given in this man-ual.

20041790 6 GB

Technical description of the burner

4.1 Burner designation

4.2 Models available

Tab. A

4 Technical description of the burner

Designation Voltage Start-up Code

RS 300/M BLU 3/400/50 Direct 3899400 - 3899410

RS 400/M BLU 3/400/50 Star/Delta 3899500 - 3899510


RS 500/M BLU 3/380/60 Star/Delta 20006131




Class 3 EN267 - Class 3 EN676

Range: R

Size

Fuel: Natural gas

Light oil

Light oil / Methane

Adjustment:

Flame control system:FS1FS2

Standard (1 stop every 24h)Continuous operation (1 stop every 72h)

Electrical supply of the system:3/400/503/230/50

Voltage of auxiliaries:230/50/60110/50/60

R S 300 M TC

Emission: C11 or... Class 1 EN267 - EN676C11 or MZ Class 2 EN267 - EN676

C33 or BLU Class 3 EN267 - EN676

FS1 3/400/50 230/50/60

BASIC DESIGNATION

EXTENDED DESIGNATION

BLU

3N / 400V / 50Hz3 / 230V / 50Hz

230V / 50-60Hz110V / 50-60Hz

Heavy oil

E Electronic camEV Electronic cam with variable speed (with Inverter)P Proportional air/gas valve

BP Two stage (light oil) / Proportional valve (gas)

M Mechanical cam

S

L

LS

N

Head: TC Standard headTL Long head

C11 or...

C13 Class 1 EN267 - Class 3 EN676

7 20041790GB


4.3 Burner categories - Countries of destination

Tab. B

4.4 Technical data

Tab. C

Tab. D(1) Reference conditions: Ambient temperature 20°C - Gas temperature 15°C - Barometric pressure 1013 mbar - Altitude 0 m a.s.l.

(2) Pressure at the test point of the pressure switch (20)(Fig. 4) with zero pressure in the combustion chamber and at maximum burner output.

(3) Sound pressure measured in manufacturer's combustion laboratory, with burner operating on test boiler and at maximum rated output. The soundpower is evaluated, in line with the regulations, on a spherical surface centred on the burner and with a radius of 1 metre.

Gas category Destination countryI2H SE - FI - AT - GR - DK - ES - GB - IT - IE - PT - IS - CH - NO

I2ELL DEI2L NLI2Er FR

I2E(R)B BEI2E LU - PL

Model RS 300/M BLU RS 400/M BLU RS 500/M BLU RS 650/M BLU RS 800/M BLU

Type 859T 860T 856T 1123T 887T

Power (1)Output (1)

min - max kW 500/1350 ÷ 3800 950/1830 ÷ 4590 1000/2500 ÷ 5170 1410/3020 ÷ 6500 1200/3500 ÷ 8100

Fuels Natural gas: G20 (methane gas) - G21 - G22 - G23 - G25

Gas pressure at max. output (2) - Gas: G20/G25

mbar 23.3/32.7 34.3/40.2 37.6/56.1 44.8/64.4 45.5/81.2

Operation Intermittent

Standard applications Boilers: water, steam, diathermic oil

Ambient temperature °C 0 - 40

Combustion air temperature °C max 60

Burner weight Kg 225 236 250 300 300

Noise levels (3) Sound pressureSound power

dB(A)8293

8596

8899

90,1101,1

88,199,1

Model RS 500/M BLU RS 800/M BLU

Type 856T80 887T80

Power (1)Output (1)

min - max kW 1000/2500 ÷ 5170 1200/3500 ÷ 8100

Fuels Natural gas: G20 (methane gas) - G21 - G22 - G23 - G25

Gas pressure at max. output (2) - Gas: G20/G25

mbar 37.6/56.1 45.5/81.2

Operation Intermittent

Standard applications Boilers: water, steam, diathermic oil

Ambient temperature °C 0 - 40

Combustion air temperature °C max 60

Burner weight Kg 250 300

Noise levels (3) Sound pressureSound power

dB(A)8899

88,199,1

20041790 8 GB


4.5 Electrical data

Tab. E

Tab. F

Tab. G

Model RS 300/M BLU RS 400/M BLU RS 500/M BLU RS 650/M BLU RS 800/M BLU

Type 859T 860T 856T 1123T 887T

Main electrical supply 3N ~ 400 / 230V +/-10% 50 Hz

Fan motor IE2

rpmV

kWA

2900230/400

4.515/8.7

2900400/690

7.513.8/8

2920400/690

9.216.9/9.7

2935400/690

18.533.3/19.2

2935400/690

2238.6/22.3

Ignition transformerV1 - V2I1 - I2

230 V - 1 x 8 kV1 A - 20 mA

Absorbed electrical power kW max 5 8 10 19 23

Protection level IP 54

Model RS 500/M BLU RS 800/M BLU

Type 856T80 887T80


Fan motor IE2

rpmV

kWA

3510380/660

9.218.3/10.6

3550380/660

2242.5/24.5


230 V - 1 x 8 kV1 A - 20 mA

Absorbed electrical power kW max 10 23


Model RS 400/M BLU RS 500/M BLU RS 650/M BLU RS 800/M BLU

Type 860T 856T 1123T 887T


Fan motor IE3

rpmV

kWA

2920400/690

7.514/8.1

2880400/690

9.216.8/9.7

2880400/690

18.532.2/18.6

2880400/690

2238.2/22.3


230 V - 1 x 8 kV1 A - 20 mA

Absorbed electrical power kW max 8.8 10.6 20.5 24


9 20041790GB


4.6 Maximum dimensions

The maximum dimensions of the burner are shown in Fig. 1.

Bear in mind that inspection of the combustion head requires theburner to be opened and the rear part turned on the hinge.

The maximum dimensions of the open burner are indicated bythe L and R positions.

The l position is reference for the refractory thickness of the boilerdoor.

Tab. H

Fig. 120065526

mm A B C D E F G H I L R

RS 300/M BLU 1325 521 164 313 588 DN65 720 867 373 1175 1055

RS 400/M BLU 1325 521 164 313 588 DN65 775 867 373 1175 1055

RS 500/M BLU 1325 521 164 370 588 DN65 775 867 357 1175 1055

RS 650/M BLU 1325 549 164 363 588 DN80 940 867 397 1175 1055

RS 800/M BLU 1325 582 164 363 588 DN80 940 867 418 1175 1055

20041790 10 GB


4.7 Firing rates

The MAXIMUM OUTPUT is chosen from within the diagram area(Fig. 2).

The MINIMUM OUTPUT must not be lower than the minimumlimit of the diagram:

Model kWRS 300/M BLU 500RS 400/M BLU 950RS 500/M BLU 1000

RS 650/M BLU 1400RS 800/M BLU 1200

WARNING

The firing rate value (Fig. 2) has been obtainedconsidering an ambient temperature of 20C, anatmospheric pressure of 1013 mbar (approx. 0 ma.s.l.), and with the combustion head adjusted asshown on page 20.

Thermal power – kW

400 1200 2000 2800 3600 44000

2

4

6

8

10

12

14

16

18

20

mba

r

22

24

5200 6000 6800 7600 8400

25

26

Fig. 2

Thermal power – kW

Com

bust

ion

cham

ber

pres

sure

- m

bar

RS 500/M

RS 800/M

D8128

D11748

Com

bust

ion

cham

ber

pres

sure

- m

bar

400 800 1200 1600 2000 2400 2800 3200 3600 4000 4400 4800 0

2

4

6

8

10

12

14

16

18

5200 5600 6000 6400 6800

RS 400/M

RS 300/M

RS 650/M

11 20041790GB


4.8 Test boiler

The burner/boiler combination does not pose any problems if theboiler is EC approved and its combustion chamber dimensionsare similar to those indicated in the diagram (Fig. 3).

If the burner must be combined with a boiler that has not been ECapproved and/or its combustion chamber dimensions are clearlysmaller than those indicated in the diagram, consult the manufac-turer.

The firing rates were obtained in special test boilers, according toEN 676 regulations.

In Fig. 3 you can see the diameter and length of the test combus-tion chamber.

Example: RS 800/M BLUOutput 7000 kW - diameter 120 cm - length 6 m.

4.9 Burner equipment

Gasket for gas train adaptor. . . . . . . . . . . . . . . . . . . . . . . . No. 1

M16 x 70 Screws to fix the gas train adaptor . . . . . . . . . . . No. 8

Thermal insulation screen . . . . . . . . . . . . . . . . . . . . . . . . . No. 1

M 18 x 60 screws to secure the burner flange to the boiler No. 4

Cable grommets kit for optional electrical wiring input . . . . No. 1

M16 x 67 stud bolts to fix the gas elbow to the pipe coupling (for RS 650-800/M BLU only). . . . . . . . . . . . No. 8

M16 nuts to fix the gas elbow to the pipe coupling(for RS 650-800/M BLU only). . . . . . . . . . . . . . . . . . . . . . . No. 8

Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1

Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1

Fig. 3

Com

bust

ion

cham

ber

m

D2448

20041790 12 GB


4.10 Burner description

1 Lifting rings2 Fan3 Fan motor4 Air damper servomotor5 Combustion head gas pressure test point6 Combustion head7 Ignition electrode8 Flame stability disc9 Electrical panel casing10 Hinge for opening the burner11 Fan air inlet12 Pipe coupling13 Gasket for boiler fixing14 Gas inlet flange15 Shutter16 Combustion head movement lever17 Air damper movement gears18 Air pressure switch19 Combustion head air pressure test point20 Maximum gas pressure switch with pressure test point21 Flame sensor probe22 Pressure test point for air pressure switch “+”

23 Pressure test point for air pressure switch “-” (for RS 300-400-500/M BLU only)

24 Gas butterfly valve control lever25 Adjustable profile cam26 Air damper control lever

Fig. 4

20065519

CAUTION

The burner can be opened to the right or to the leftwithout links to the fuel supply side.

When the burner is closed, the hinge can be refit-ted on the opposite side.

13 20041790GB


4.11 Electrical panel description

1 Terminal board for kits2 Clean contacts output relay3 Ignition transformer4 Bracket for application of output power regulator kit RWF405 Stop push-button6 OFF-automatic-manual selector7 Power increase - power reduction selector8 Light signalling start-up enabling9 Light signalling of motor thermal relay operation10 Light signalling of burner lockout and reset switch11 Electrical control box12 Star-triangle starter (except for RS 300/M BLU)13 Timer (except for RS 300/M BLU)14 Air pressure switch15 Main terminal supply board16 Supply cables and external connections passage17 Bracket for application of UV sensor kit18 Auxiliary circuits fuse19 Plug/socket servomotor20 Relay21 Thermal relay

NOTE

Two types of burner lockout may occur:➤ Control box lockout: if the control box button (red led ) 11)

Fig. 5) and the backlit button 10) light up, it indicates that theburner is in lockout.Release by pressing the pushbutton 10).

➤ Motor lockout: release by pressing the button on thermalrelay.

4.11.1 Fan motor rotationPlace in front of the cooling fan of the fan motor and check that itturns anticlockwise.

Fig. 5

11

18

5

78

9

10

4

12

2015

1

21

19

166

16

13

172

3

14

1

11

4

10

9

87

651516

13

12

16

19

18

16

21

20

D3101

RS 650/M BLURS 800/M BLU

RS 300/M BLURS 400/M BLURS 500/M BLU

20041790 14 GB


4.12 RMG88.62C2 control box

Warnings

➤ All interventions (assembly and installation operations,assistance, etc.) must be carried out by qualified personnel.

➤ Before modifying the wiring in the control box connectionarea, fully disconnect the system from the power supply(omnipolar separation). Check the system is not poweredand cannot be accidentally reconnected. Failure to do thiswill lead to the risk of electrocution.

➤ Protection against electrocution from the control box and allconnected electric components is obtained with the correctassembly.

➤ Before any intervention (assembly and installation opera-tions, assistance, etc.), ensure the wiring is in order and thatthe parameters are correctly set, then make the safetychecks.

➤ Falls and collisions can negatively affect the safety func-tions. In this case, the control box must not be operated, even if itdisplays no evident damage.

➤ Press the reset button of the burner lockout command or thereset button (by applying a force of not more than 10 N),without the aid of tools or sharp objects.

For the safety and reliability of the control box, comply with thefollowing instructions:– avoid conditions that can favour the development of conden-

sate and humidity. Otherwise, before switching on again,make sure that the entire control box is perfectly dry!

– Static charges must be avoided since they can damage thecontrol box’s electronic components when touched.

Installation notes

• Check the electric wiring inside the boiler complies with the na-tional and local safety regulations.

• Ensure that spliced wires cannot get into contact with neigh-bouring terminals. Use adequate ferrules.

• The actuator execution times must correspond to the burnercontrol program. An additional safety control of the burner withthe actuators is needed.

• Make sure the cable grommets of the connected cables com-ply with the relevant standards.

• Arrange the H.V. ignition cables separately, as far as possiblefrom the control box and the other cables.

• Phase and neutral must not be swapped over (danger of fire,operating defects, loss of protection against electric shock,etc.).

Technical data

Tab. I

Mechanical structureThe control box is made of plastic to resist knocks, heat andflame propagation. The control box contains the following components:

• a microprocessor that controls the program sequence, and arelay for controlling the load

• an electronic flame signal amplifier

• a built-in reset button with 3 signalling colours (LED) for statusand error messages

WARNING

To avoid accidents, material or environmentaldamage, observe the following instructions!

The RMG88.62C2 control box is a safety device!Avoid opening or modifying it, or forcing its opera-tion. Riello S.p.A. cannot assume any responsibil-ity for damage resulting from unauthorisedinterventions!

Mains voltage AC 110...120 V +10 % / -15 %

Mains frequency 50 / 60 Hz ±6 %

Power absorption 20 VA

Protection level IP20

Safety class I

Weight approx. 260 g

Cable length

Thermostat cableAir pressure switchGas pressure switchRemote resetCPI

Max. 20 m at 100 pF/mMax. 1 m at 100 pF/mMax. 20 m at 100 pF/mMax. 20 m at 100 pF/mMax. 1 m at 100 pF/m

Environmental conditions:

OperationClimatic conditionsMechanical conditionsTemperature rangeHumidity

DIN EN 60721-3-3Class 3K3Class 3M3-20...+60°C< 95 % r.h.

Fig. 6

S8906

15 20041790GB


4.13 LKS 310-35 servomotor

Warnings

➤ All interventions (assembly and installation operations,assistance, etc.) must be carried out by qualified personnel.

➤ Falls and collisions can negatively affect the safety func-tions. In this case, the servomotor must not be operated,even if it displays no evident damage.

➤ Fully disconnect the servomotor from the mains when work-ing near terminals and connections.

➤ Condensation and exposure to water are not allowed.

Assembly notes

• Check the relevant national safety standards are respected.

• For safety reasons, the servomotor must be checked afterlong periods of non-use.

Installation notes

• To avoid the risk of electrocution, fix the cover and all electri-cal wiring correctly.

• Check the wiring is in order.

• Arrange the H.V. ignition cables separately, as far as possi-ble from the control box and the other cables.

• Electromagnetic emissions must be checked on an applica-tion-specific basis

•

Technical data

Tab. J

WARNING

To avoid accidents, material or environmen-tal damage, observe the following instruc-tions!

Avoid opening, modifying or forcing the ac-tuators.

Mains voltage 230 V -15% +10%

Mains frequency 50 / 60 Hz

Power absorption 7 ... 15 VA

Motor Reversible synchronous

Clutch Red lever, separates gears from motor

Drive angle 90°

Protection level IP54, with appropriate cable entry

Cable entry 2 x PG11

Cable connection terminal board for 0.5mm2 (min.) and 2.5mm2 (max.)

Rotation direction Clockwise

Rated torque (max.) 15 Nm

Holding torque 10 Nm

Operation time 30 s.

Weight approx. 1.8 kg

Environmental conditions:

OperationTransport and storage

0....+60° C-20...+60°C

Fig. 7S8421

20041790 16 GB

Installation

5.1 Notes on safety for the installation

After carefully cleaning all around the area where the burner willbe installed, and arranging the correct lighting of the environ-ment, proceed with the installation operations.

5.2 Handling

The packaging of the burner includes a wooden platform, so it ispossible to move the burner (still packaged) with a transpallettruck or fork lift truck.

5.3 Preliminary checks

Checking the consignment

Checking the characteristics of the burner

Check the identification label of the burner, showing:➤ the model (A) (Fig. 8) and type of burner (B);➤ the year of manufacture, in cryptographic form (C);➤ the serial number (D);➤ the data for electrical supply and the protection level (E);➤ the absorbed electrical power (F);➤ the types of gas used and the relative supply pressures (G);➤ the data of the burner's minimum and maximum output pos-

sibilities (H) (see Firing rate)Warning. The burner output must be within the boiler's firingrate;

➤ the category of the appliance/countries of destination (I).

5 Installation

DANGER

All the installation, maintenance and disassemblyoperations must be carried out with the electricitysupply disconnected.

WARNING

The installation of the burner must be carried outby qualified personnel, as indicated in this manualand in compliance with the standards and regula-tions of the laws in force.

DANGER

Combustion air inside the boiler must be free fromhazardous mixes (e.g.: chloride, fluoride, halo-gen); if present, it is highly recommended to carryout cleaning and maintenance more frequently.

WARNING

The handling operations for the burner can behighly dangerous if not carried out with the great-est attention: keep any unauthorised people at adistance; check the integrity and suitableness ofthe available means of handling.Check also that the area in which you are workingis empty and that there is an adequate escapearea (i.e. a free, safe area to which you can quick-ly move if the burner should fall).When handling, keep the load at not more than20-25 cm from the ground.

After positioning the burner near the installationpoint, correctly dispose of all residual packaging,separating the various types of material.

CAUTION

Before proceeding with the installation operations,carefully clean all around the area where the burn-er will be installed.

CAUTION

After removing all the packaging, check the integ-rity of the contents. In the event of doubt, do notuse the burner; contact the supplier.

The packaging elements (wooden cage or card-board box, nails, clips, plastic bags, etc.) must notbe abandoned as they are potential sources ofdanger and pollution; they should be collected anddisposed of in the appropriate places.

WARNING

A burner label, or any other component, that hasbeen tampered with, removed or is missing, pre-vents the definite identification of the burner andmakes any installation or maintenance work diffi-cult.

R.B.L.

GAS-KAASUGAZ-AEPIO

X

RIELLO S.p.A.I-37045 Legnago (VR)

AD E

B CF

I

G HG H

Fig. 8D10411

17 20041790GB

Installation

5.4 Operating position

5.5 Removal of the locking screws from the shutter

5.6 Preparing the boiler

5.6.1 Boring the boiler platePierce the closing plate of the combustion chamber, as in Fig. 11.The position of the threaded holes can be marked using the ther-mal insulation screen supplied with the burner.

5.6.2 Blast tube lengthThe length of the blast tube must be selected according to the in-dications provided by the manufacturer of the boiler, and in anycase it must be greater than the thickness of the boiler door com-plete with its refractory.

For boilers with front flue passes 1) (Fig. 12) or flame inversionchamber, a protection in refractory material 5) must be insertedbetween the boiler fettling 2) and the flame funnel 4).

This protection must not compromise the extraction of the blasttube.

For boilers with a water-cooled frontpiece, a refractory lining 2)-5) (Fig. 12) is not necessary, unless expressly requested by theboiler manufacturer.

Tab. K

WARNING

➤ The burner is designed to operate only inpositions 1, 2, 3 and 4 (Fig. 9).

➤ Installation 1 is preferable, as it is the onlyone that allows the maintenance operationsas described in this manual.

➤ Installations 2, 3 and 4 permit operation butmake maintenance and inspection of thecombustion head more difficult.

DANGER

➤ Any other position could compromise the cor-rect operation of the appliance.

➤ Installation 5 is prohibited for safety reasons.

Fig. 9

2 3 4 51

D7739

WARNING

Remove the screws and the nuts 1)-2)(Fig. 10),before installing the burner on the boiler.

Replace them with the screws 3) M12 X 25 sup-plied with the burner.

1

2

1

2

3

3

Fig. 10

D12015

mm A B C

RS 300/M BLU 350 452 M18

RS 400/M BLU 350 452 M18

RS 500/M BLU 390 452 M18

RS 650/M BLU 400 495 M18

RS 800/M BLU 400 495 M18

Fig. 11D455

20041790 18 GB

Installation

5.7 Securing the burner to the boiler

➤ Fit the heat insulation supplied onto the blast tube (4)(Fig. 12).

➤ Fit the entire burner onto the boiler hole prepared previously(Fig. 11), and fasten with the screws supplied.

5.8 Access to head internal part

➤ Unhook the tie-rod 6)(Fig. 12) of the head movement lever,removing the nut.

➤ Undo the self-locking nut 6)(Fig. 13) and unhook the tie-rod7).

➤ Disconnect the socket 8) of the servomotor.➤ Disconnect the socket 9) of the gas pressure switch.➤ Remove the 4 fixing screws 1).➤ Open the burner on the hinge as in Fig. 13.➤ Unhook the probe cables and electrode 2).➤ Turn the underneath part of the elbow 3) anticlockwise up to

release it from its housing.➤ Undo the screw 4) with pressure test point.➤ Remove the internal part of the head 5).

5.9 Probe-electrode position

Prepare a suitable lifting system using rings3)(Fig. 12).

WARNING

The seal between burner and boiler must beairtight.

Fig. 1220065723

Fig. 13

20065724

WARNING

Check that the probe and the electrode are placedas in Fig. 14, according to the dimensions indicat-ed.

718,5

Fig. 14

ProbeElectrode

D3583

19 20041790GB

Installation

5.10 Combustion head adjustment

The air damper servomotor 4)(Fig. 4 on page 13), beyond vary-ing the air output according to the output demand, through a lev-erage varies the combustion head adjustment.

This system allows an optimum adjustment also at minimum fir-ing rate.

Similarly to servomotor rotation, it is possible to vary the openingof the combustion head moving the tie-rod on the holes (1-2-3),(Fig. 15).

The selection of the hole (1-2-3) to be used is determined accord-ing to the maximum output requested (Tab. L).

In the factory, the hole is adjusted for the maximum stroke (hole3).

In case in which, with boilers with high back pressure, also withdamper completely open, the air output is not enough, it is possi-ble to carry out a calibration different to the one indicated by theTab. L, moving the tie-rod on the following higher hole, increasingthe opening of the combustion head and the air output.

Tab. L

Output (kW) No. Hole

RS

300

/M

1200 1

2200 2

2800 3

3200 3

RS

400

/M

1800 1

3400 2

4000 3

4500 3

RS

500

/M

1000 1

2500 2

3500 3

5200 3

RS

650

/M 1400 2

4700 3

6500 3

RS

800

/M

1800 1

4000 2

6000 3

8100 3

012

3

4

6

3

2

14

Fig. 15D3093

D3584

Fig. 16

20041790 20 GB

Installation

WARNING

For RS 300-400-500/M BLU only

In order to work correctly in flame inversion boil-ers, the gas tubes must be adjusted in the hole inposition 4, see Fig. 17.

Pay attention to moving parts.

Danger of crushing of limbs!

Fig. 17D3418

21 20041790GB

Installation

5.11 Gas feeding

5.11.1 Gas feeding lineKey (Fig. 18 - Fig. 19 - Fig. 20 - Fig. 21)1 Gas input pipe2 Manual valve3 Vibration damping joint4 Pressure gauge with pushbutton cock5 Filter

6A Includes:– filter– working valve– safety valve– pressure adjuster

6B Includes– working valve– safety valve– pressure adjuster

6C Includes– safety valve– working valve

6D Includes:– safety valve– working valve

7 Minimum gas pressure switch

8 Leak detection control, provided as an accessory or integrat-ed, based on the gas train code. In compliance with the EN676 standard, the leak detection control is compulsory forburners with maximum outputs over 1200 kW.

9 Gasket, for “flanged” versions only

10 Pressure adjuster

P2 Upline pressure of valves/adjuster

P3 Upstream pressure of the filter

L Gas train, supplied separately

L1 The responsibility of the installer

Explosion danger due to fuel leaks in the pres-ence of a flammable source.

Precautions: avoid knocking, attrition, sparks andheat.

Make sure that the fuel interception tap is closedbefore performing any operation on the burner.

WARNING

The fuel supply line must be installed by qualifiedpersonnel, in compliance with current standardsand laws.

L1 L

6AP2

7

4

P3

321

8

Fig. 18D11854

MBC “threaded”

Fig. 19

MBC “flanged”

20065706

Fig. 20

DMV “flanged or threaded”

20065609

20065707

Fig. 21

CB “flanged or threaded”

20041790 22 GB

Installation

5.11.2 Gas train Approved according to standard EN 676 and provided separatelyfrom the burner.

To select the correct gas train model, refer to the supplied “Burn-er-gas train combination” manual.

5.11.3 Gas train installation

DANGER

Disconnect the electrical power using the mainsystem switch.

Check that there are no gas leaks.

Beware of train movements: danger of crushing oflimbs.

Make sure that the gas train is properly installedby checking for any fuel leaks.

The operator must use appropriate tools for instal-lation.

Fig. 2220065541

23 20041790GB

Installation

5.11.4 Gas pressureTab. M indicates the minimum pressure drops along the gas sup-ply line, depending on the maximum burner output.

The values shown in Tab. M refer to: – Natural gas G 20 NCV 9.45 kWh/Sm3 (8.2 Mcal/Sm3)– Natural gas G 25 NCV 8.13 kWh/Sm3 (7.0 Mcal/Sm3)

Column 1

Pressure drop on combustion head.Gas pressure measured at the test point P1) (Fig. 22), with:• Combustion chamber at 0 mbar;• Burner working at maximum output;• Combustion head adjusted as in page 20.

Column 2Pressure loss at gas butterfly valve 10) (Fig. 20) with maximumopening: 90°.

Calculate the approximate maximum output of the burner in thisway:– subtract the combustion chamber pressure from the gas

pressure measured at test point P1) (Fig. 22).– Find, in the table Tab. M related to the burner concerned, the

pressure value closest to the result of the subtraction.– read the corresponding output on the left.

Example for RS 650/M BLU with G20 natural gas:Maximum output operationGas pressure at test point P1)(Fig. 22) = 25.6 mbarPressure in combustion chamber = 2 mbar

25.6 - 2 = 23.6 mbar

A pressure of 23.6 mbar, column 1, corresponds in the table Tab.M to an output of 4,500 kW.

This value serves as a rough guide; the effective output must bemeasured at the gas meter.

To calculate the required gas pressure at test point P1) (Fig. 22),set the MAX output required from the burner operation:– find the nearest output value in the table Tab. M for the burner

in question.– read, on the right (column 1), the pressure at the test point

P1)(Fig. 22).– Add this value to the estimated pressure in the combustion

chamber.

Example for RS 650/M BLU with G20 natural gas:Required burner maximum output operation: 4,500 kWGas pressure at an output of 4,500 kW = 23.6 mbarPressure in combustion chamber = 2 mbar

23.6 + 2 = 25.6 mbarPressure required at test point P1)(Fig. 22).

Tab. M

kW1 ∆p (mbar) 2 ∆p (mbar)

G 20 G 25 G 20 G 25

RS

300

/M B

LU

1,245 7.8 11.6 1.3 2.01,500 9.4 13.9 1.9 2.81,750 10.9 16.2 2.6 3.92,000 12.4 18.5 3.4 5.02,250 13.0 19.5 4.3 6.42,500 13.7 20.4 5.3 7.92,750 14.3 21.4 6.4 9.53,000 15.0 22.4 7.6 11.33,250 17.6 26.2 8.9 13.33,500 20.2 30.1 10.3 15.43,800 23.3 34.8 12.2 18.2

RS

400

/M B

LU

1,800 6.3 9.3 2.9 4.32,000 7.9 11.7 3.5 5.32,250 9.9 14.7 4.5 6.72,500 11.9 17.7 5.5 8.22,750 13.9 20.7 6.7 10.03,000 15.9 23.7 8.0 11.93,250 17.9 26.7 9.3 13.93,500 19,7 29.4 10.8 16.23,750 21.1 31.4 12.4 18.64,000 22.4 33.5 14.2 21.14,250 27.4 40.8 16.0 23.84,500 32.5 48.4 17.9 26.7

RS

500

/M B

LU

2,500 11.5 17.2 0.6 0.82,600 12.3 18.4 0.6 0.92,800 13.9 20.8 0.7 1.03,000 15.5 23.2 0.8 1.23,200 17.1 25.5 0.9 1.43,400 18.7 27.9 1.0 1.53,600 20.5 30.6 1.2 1.73,800 22.5 33.6 1.3 1.94,000 24.5 36.6 1.4 2.14,200 26.5 39.5 1.6 2.34,400 28.5 42.5 1.7 2.64,600 30.5 45.5 1.9 2.84,800 33.0 49.2 2.0 3.15,000 35.5 53.0 2.2 3.35,200 38.0 56.7 2.4 3.6

RS

650

/M B

LU

3,000 11.0 13.7 1.0 1.53,250 13.1 16.7 1.1 1.73,500 15.2 19.8 1.3 2.03,750 17.3 22.8 1.5 2.34,000 19.4 25.8 1.7 2.64,250 21.5 28.9 1.9 2.94,500 23.6 31.9 2.1 3.34,750 25.7 35.1 2.4 3.75,000 28.4 39.3 2.6 4.05,250 31.2 43.5 2.9 4.55,500 33.9 47.7 3.2 4.95,750 36.6 51.9 3.5 5.46,000 39.3 56.0 3.8 5.86,250 42.1 60.2 4.1 6.36,500 44.8 64.4 4.5 6.8

RS

800

/M B

LU

3,500 9.4 12.8 0.6 0.74,000 12.8 17.7 0.7 0.94,500 16.2 22.5 0.9 1.15,000 19.6 27.3 1.2 1.45,500 23.0 32.1 1.4 1.76,000 26.4 37.0 1.7 2.06,500 30.9 44.7 2.0 2.37,000 35.5 52.4 2.3 2.77,500 40.9 59.8 2.6 3.18,000 46.3 67.1 3.0 3.58,060 47.0 68.0 3.0 3.5

20041790 24 GB

Installation

5.12 Electrical wiring

Notes on safety for the electrical wiring

Before carrying out any maintenance, cleaning or checking oper-ations:

If the hood is still present, remove it and proceed with the electri-cal wiring according to the wiring diagrams.

Use flexible cables in compliance with the EN 60 335-1 standard.

5.12.1 Supply cables and external connections passage

All the cables to be connected to the burner must be threadedthrough cable grommets. The use of the cable grommets cantake various forms. By way of example see Fig. 23.

Key (Fig. 23)1 Electrical supply2 Fan motor3 minimum gas pressure switch4 VPS gas valve leak detection control device5 Gas train6 Consents/Safety7 available

DANGER

➤ 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. Refer to the wiring diagrams.➤ The manufacturer declines all responsibility for modifications or connections different from those shown in the wir-

ing diagrams➤ Check that the electrical supply of the burner corresponds to that shown on the identification label and in this man-

ual.➤ The burner has been type-approved for continuous use.

This means they should compulsorily be stopped at least once every 72 hours to enable the control box to per-form checks of its own start-up efficiency. Normally, burner stopping is guaranteed by the boiler's thermostat/pres-sure switch.

➤ If this is not the case, a time switch should be fitted in series to TL to stop the burner at least once every 72 hours.Refer to the wiring diagrams.

➤ The electrical safety of the device is obtained only when it is correctly connected to an efficient earthing system,made according to current standards. It is necessary to check this fundamental safety requirement. In the event ofdoubt, have the electrical system checked by qualified personnel. Do not use the gas tubes as an earthing systemfor electrical devices.

➤ The electrical system must be suitable for the maximum power absorption of the device, as indicated on the labeland in the manual, checking in particular that the section of the cables is suitable for that level of power absorp-tion.

➤ For the main power supply of the device from the electricity mains:- do not use adapters, multiple sockets or extensions;- use a multiple pole switch with at least a 3 mm gap between the contacts (overvoltage category III), as envis-

aged by the present safety standards.➤ Do not touch the device with wet or damp body parts and/or in bare feet.➤ Do not pull the electric cables.

DANGER

Disconnect the electrical supply from the burnerby means of the main system switch.

DANGER

Close the fuel interception tap.

DANGER

Avoid condensate, ice and water leaks from form-ing.

Perform all maintenance, cleaning or inspectionoperations and mount the casing again.

7

7

7

7

76

7

6 6 1

1

2 4 3 5 7

6 66

3

24

775

Fig. 23

S8422

RS 300-400-500/M BLU

RS 650-800/M BLU

25 20041790GB

Start-up, calibration and operation of the burner

6.1 Notes on safety for the first start-up

6.2 Adjustments prior to ignition

Combustion head adjustment is already described on page 20.

In addition, the following adjustments must also be made:➤ Open manual valves upline from the gas train.➤ Adjust the minimum gas pressure switch to the start of the

scale.➤ Adjust the maximum gas pressure switch to the end of the

scale.➤ Adjust the air pressure switch to the start of the scale.➤ Purge the air from the gas line.

We recommend using a plastic tube routed outside the build-ing and to purge air until gas is smelt.

➤ Fit a U-type pressure gauge or a differential pressure gauge(Fig. 24), with socket (+) on the gas pressure of the pipecoupling and (-) in the combustion chamber.The manometer readings are used to calculate MAX burneroutput using the Tab. M.

➤ Connect two lamps or testers to the two gas line solenoids tocheck the exact moment in which voltage is supplied. Thisoperation is unnecessary if each of the two solenoids isequipped with a pilot light that signals voltage passingthrough.

6.3 Burner start-up

Turn off the thermostats/pressure switches and check the lightsignal 8) comes on (Fig. 5 on page 14).

Put the selector 1)(Fig. 25) in position “MAN”.

6.4 Burner ignition

The burner should light after having performed the above steps.

If the motor starts up, but the flame does not appear and the con-trol box goes into lockout, reset it and wait for a new ignition at-tempt.

If ignition does not occur, it may be that gas is not reaching thecombustion head within the safety time period of 3 seconds. Inthis case, increase gas ignition delivery.

The arrival of gas at the pipe coupling is indicated by the U-typepressure gauge (Fig. 24).

Once the burner has ignited, proceed with the global adjustmentof the burner.

6 Start-up, calibration and operation of the burner

WARNING

The first start-up of the burner must be carried outby qualified personnel, as indicated in this manualand in compliance with the standards and regula-tions of the laws in force. WARNING

Check the correct working of the adjustment, com-mand and safety devices.

CAUTION

Before starting up the burner, it is good practice toadjust the gas train so that ignition takes place inconditions of maximum safety, i.e. with gas deliv-ery at the minimum.

20065539

Fig. 24

WARNING

Make sure that the lights or testers connected tothe solenoids, or the pilot lights on the solenoidsthemselves, indicate that no voltage is present. If voltage is present, stop the burner immediatelyand check the electrical wiring.

Fig. 25

1 2

0 AUTO MAN - +

D3108

20041790 26 GB


6.5 Servomotor adjustment

The servomotor (Fig. 26) provides simultaneous adjustment forthe air damper, by means of the adjustable profile cam and thegas butterfly valve. Performs a rotation of 130° in 43 s.

Cam 1 (blue) : 0°Limits rotation toward minimum position.When the burner is shut down, the air damper andgas butterfly valve must be closed: 0°.

Cam 2 (orange) : 35°Adjusts the ignition position and the MIN output.

Cam 3 (red) : 125°Limits rotation toward maximum position.

Cam 4 (black) : not used

6.6 Air / fuel adjustment

The air/fuel synchronisation is carried out by means of a servo-motor 1)(Fig. 27) that, connected to a variable profile cam 2), op-erates on the delivery air dampers and, through proper leverage,on the combustion head and on the gas butterfly valve.

It is advisable, to reduce the loss and for a wide calibration field,to adjust the servomotor to the maximum of the output used, thenearest possible to the maximum opening (125°).

On the gas butterfly valve, fuel step according to the burner out-put required, with servomotor completely open, is carried out bythe pressure stabiliser placed on the train.

6.6.1 Maximum output adjustment Excluding model RS 800/M BLU

Air adjustmentAdjust the servomotor to the maximum opening so that the airdampers are completely open. To reduce the output, loosen thescrew 2)(Fig. 28) placed under the burner suction line and closeprogressively the grid 1) up to obtain the output required.

Steps in suction line are not necessary only in case in which theburner is working at maximum of the firing rate on page 11.

WARNING

Do not alter the factory setting for the 4 cams; sim-ply check that they are set as indicated below:

Fig. 26

12

3

4

D3115

WARNING!MOVING PARTS

DANGER: CRUSHING OF LIMBS

WARNING

It is advisable to take to the maximum output re-quired manually and, just after defining the stepsin suction line, the gas pressure and the combus-tion head adjustment, carry out complete calibra-tion.

Fig. 27D3623

1

2

Fig. 28

D3094

27 20041790GB


6.6.2 Minimum output adjustment The MIN output must be set within the firing rate indicated onpage 11.

Turn the selector 2)(Fig. 25) “output reduction”, and keep itturned to “-” until the servomotor has closed the air damper andthe gas butterfly valve at 35 (adjustment made in the factory).

Gas adjustmentMeasure the gas delivery on the gas meter.➤ If it is necessary to reduce it, reduce slightly the angle of

cam 2) (Fig. 26) with small, regular movements, i.e. bring itfrom an angle of 35° to 33° - 31°....

➤ If you need to increase it, rotate the “power increase” selec-tor 2)(Fig. 25) (open the gas butterfly valve by 10-15), andincrease the cam angle 2)(Fig. 26) with a series of smallmovements - i.e. move from angle 35° to 37° - 39°....

➤ Now press the “power reduction” button until the servomotorreturns to the minimum opening position, and measure thegas delivery.

Air adjustmentProgressively adjust the end profile of cam 1) (Fig. 29) by turningthe cam adjustment screws 2). It is preferable not to turn the first screw since this is used to setthe air damper to its fully closed position.

6.6.3 Intermediate output adjustmentAfter adjusting the maximum and minimum output of the burner,carry out air adjustment on higher intermediate positions of theservomotor.

The passage from one position to the next one is obtained bypressing the selector 2)(Fig. 25) on the symbol (+) or (-).

For better adjustment repeatability, take care to stop the rotationof the cam unit when the upper bearing that slides on the profile4)(Fig. 29) is aligned with one of the adjustment screws 2).

Screw or unscrew the preset screw 2) to increase or decrease theair output so as to adjust it to the corresponding gas output.

Key (Fig. 29)1 Cam2 Adjustment screws3 Locking screws4 Adjustable profile

CAUTION

After output adjustment (maximum, minimum andintermediate), it is important to lock all the air ad-justment screws 2) by the locking screws 3) so asto avoid possible movements from the position ofair - gas calibration.

Fig. 29

D1499

1 2 34

20041790 28 GB


6.7 Pressure switch adjustment

6.7.1 Air pressure switch - check COAdjust the air pressure switch (Fig. 30) after performing all otherburner adjustments with the air pressure switch set to the start ofthe scale.

With the burner operating at MIN output, increase adjustmentpressure by slowly turning the relative knob clockwise until theburner locks out.

Then turn the knob anticlockwise by about 20% of the set pointand repeat burner start-up to ensure it is correct.

If the burner locks out again, turn the knob anticlockwise a littlebit more.

On RS 300-400-500/M BLU burners the air pressure switch is fit-ted in a “differential” mode, that is, with two pipes connected tothe specific pressure test points “+” and “-” 22)-23) (Fig. 4 onpage 13).

On RS 650-800/M BLU burners the air pressure switch is fitted inan “absolute” mode, that is, connected only to the pressure testpoint “+” 22) (Fig. 4 on page 13).

6.7.2 Maximum gas pressure switchAdjust the maximum gas pressure switch (Fig. 31) after perform-ing all other burner adjustments with the maximum gas pressureswitch set to the end of the scale.

With the burner operating at maximum output, lower adjustmentpressure by slowly turning the relative knob anticlockwise untilthe burner locks out.

Turn the knob clockwise by 2 mbar and repeat the start-up of theburner.

If the burner locks out again, turn the knob clockwise again by 1mbar.

6.7.3 Minimum gas pressure switchAdjust the minimum gas pressure switch (Fig. 32) after perform-ing all the other burner adjustments with the pressure switch setto the start of the scale.

With the burner operating at maximum output, increase adjust-ment pressure by slowly turning the relative knob clockwise untilthe burner locks out.

Then turn the knob anticlockwise by 2 mbar and repeat burnerstart-up to ensure it is uniform.

If the burner locks out again, turn the knob anticlockwise again by1 mbar.

WARNING

In conformity with the standard, the air pressureswitch must prevent the air pressure falling below80% of the adjusted value and the CO in the fluegases exceeding 1% (10,000 ppm).

To check this, insert a combustion analyser intothe chimney, slowly close the fan suction inlet (forexample with cardboard) and check that the burn-er locks out, before the CO in the fumes exceeds1%.

Fig. 30D3854

Fig. 31D3856

Fig. 32D3855

29 20041790GB

6.8 Operation sequence of the burner

6.8.1 Burner start-up0s: TL thermostat/pressure switch closes.

2s: Start of electrical control box programme. Fan motor starts up, servomotor starts up, the pre-purgingphase starts. The servomotor rotates to the right by 125,i.e. until the contact intervenes on the cam 3)(Fig. 26 onpage 27).

42s: The air damper arrives to the MAX. output position.

63s: The servomotor rotates towards the left until the angleset on the cam 3)(Fig. 26 on page 27).

96s: The air damper arrives on the MIN power position or ig-nition position.

97s: Ignition electrode strikes a spark. The safety valve VSopens, along with the adjustment valve VR. The flame isignited at a low output level, point A.Delivery is then progressively increased, with the valveVR opening slowly up to MIN. output, point B.

99s: The spark goes out.

106s: The control value box starting cycle ends.

6.8.2 Operation

Burner without the output power regulator RWF40Once the start-up cycle is completed, the servomotor commandmoves on to the TR thermostat/pressure switch that controls thepressure or the temperature in the boiler, point C. (The electricalcontrol box continues to check the presence of the flame and thecorrect position of the air and gas maximum pressure switches).– If the temperature or the pressure is low so the thermostat/

pressure switch TR is closed, the burner progressively in-creases the output up to the MAX value (section C-D).

– If subsequently the temperature or pressure increases untilTR opens, the burner progressively decreases its output tothe MIN value (section E-F). The sequence repeats endless-ly.

– The burner locks out when the heat request is less than theheat supplied by the burner at MIN output, (section G-H). TheTL thermostat/pressure switch opens, and the servomotor re-turns to angle 0 limited by the contact of the cam 2)(Fig. 26on page 27). The air damper closes completely to reduce heat losses to aminimum.

For every change of output, the servomotor will automaticallychange the gas output (butterfly valve), the air output (fan damp-er) and the air pressure (2 shutters in the combustion head).

Burner with the output power regulator RWF40See manual enclosed with the adjuster.

6.8.3 Ignition failureIf the burner does not fire, it goes into lockout within 3 sec. afterthe gas valve opens and 98 seconds after the control device TLcloses.

6.8.4 Burner flame goes out during operationIf the flame should go out during operation, the burner will lockoutwithin 1s.

D3605

Normal ignition(n° = seconds from instant 0)

Fig. 33

D3606

Ignition failure

Fig. 34

20041790 30 GB

6.9 Burner start-up cycle diagnostics

During start-up, indication is according to the colour code table(Tab. N).

Tab. N

Key (Tab. N):Off Yellow Green Red

6.9.1 Resetting of control box and diagnostics useThe control box features a diagnostics function through whichany causes of malfunctioning are easily identified (indicator: REDLED).

To use this function, you must wait at least 10 seconds once ithas entered the safety condition (lockout ), and then press the re-set button.

The control box generates a sequence of pulses (1 secondapart), which is repeated at constant 3-second intervals.

Once you have seen how many times the light blinks and identi-fied the possible cause, the system must be reset by holding thebutton down for 1 - 3 seconds.

Tab. O

The methods that can be used to reset the control box and usediagnostics are given below.

6.9.2 Control box reset To carry out the control box reset, proceed as follows:– Hold the button down for between 1 and 3 seconds.

The burner restarts after a 2-second pause once the buttonis released.If the burner does not restart, you must make sure the limitthermostat is closed.

6.9.3 Visual diagnosticsIndicates the type of burner malfunction causing lockout. Tovisualise the diagnostics proceed as follows:– Hold the button down for more than 3 seconds once the red

LED (burner lockout) remains steadily lit.A yellow light blink to tell you the operation is done.

– Release the button once the light has blinked. The number ofblinks indicates the reason for the malfunctioning (refer to thecoding in Tab. T on page 36).

6.9.4 Software diagnosticsGives an analysis of the life of the burner, through optical connec-tions with a PC showing the working hours, number and types oflockout, control box serial number etc.

To view diagnostics, proceed as follows:– Hold the button down for more than 3 seconds once the red

LED (burner lockout) remains steadily lit. A yellow light blink to tell you the operation is done.

– Release the button for 1 second and then press again forover 3 seconds until the yellow light blinks again.

– Once the button is released, the red LED will flash intermit-tently with a higher frequency: only now can the optical linkbe activated.

Once the operations are done, the control box’s initial status mustbe restored using the resetting procedure described above.

Tab. P

The sequence of led pulses issued by the control box identifiesthe possible types of malfunction, which are listed in the tableTab. T on page 36.

Sequences Colour code

Pre-purging

Ignition phase

Operation, flame OK

Operation with weak flame signal

Electrical supply below ~ 170VLockout

Extraneous light

RED LED lit wait for at least 10s Lockout Press reset fo r > 3s Pulses 3s interval Pulses

PRESSURE ON THE BUTTON STATE OF CONTROL BOX

From 1 to 3 seconds Reset of the control box without visualisation of the visual diagnostics.

More than 3 seconds Visual diagnostics of the lockout condition:(LED blinks at 1-second intervals).

More than 3 seconds starting from the condi-tion of visual diagnostics

Software diagnostics, with the help of optical interface and PC (possibility to visualisethe working hours, irregularities, etc.)

31 20041790GB

6.10 Normal operation / flame detection time

The control box has a further function to guarantee the correctburner operation (signal: GREEN LED permanently on).

To use this function, wait at least ten seconds from the burner ig-nition and then press the control box button for a minimum of 3seconds.

After releasing the button, the GREEN LED starts flashing asshown in: Tab. Q

Tab. Q

The pulses of the LED constitute a signal spaced by approxi-mately 3 seconds.

The number of pulses will measure the probe detection timesince the opening of gas valves, according to: Tab. R

Tab. R

This is updated in every burner start-up.

Once read, the burner repeats the start-up cycle by briefly press-ing the control box button.

GREEN LED lit wait for at least 10s Press reset for > 3s Signal 3s interval Signal

Signal Flame detection time

1 blink0.4 s

2 blinks0.8 s

6 blinks2.8 s

WARNING

If the result is > 2 s, ignition will be retarded.Check the adjustment of the hydraulic brake ofthe gas valve, the air damper and the combustionhead adjustment.

20041790 32 GB

Maintenance

7.1 Notes on safety for the maintenance

The periodic maintenance is essential for the good operation,safety, yield and duration of the burner.

It allows you to reduce consumption and polluting emissions andto keep the product in a reliable state over time.

Before carrying out any maintenance, cleaning or checking oper-ations:

7.2 Maintenance programme

7.2.1 Maintenance frequency

7.2.2 Checking and cleaning

CombustionCarry out an analysis of the combustion discharge gases. Significant differences with respect to the previous check indicatethe points where more care should be exercised during mainte-nance.

Combustion headOpen the burner and make sure that all components of thecombustion head are in good condition, not deformed by thehigh temperatures, free of impurities from the surroundingsand correctly positioned.

BurnerCheck that there are not excess wear or loosen screws.Clean the outside of the burner.

FanCheck to make sure that no dust has accumulated inside the fanor on its blades, as this condition will cause a reduction in the airflow rate and provoke polluting combustion.

BoilerClean the boiler as indicated in its accompanying instructions inorder to maintain all the original combustion characteristics in-tact, especially the flue gas temperature and combustion cham-ber pressure.

Flame presence check

The burner is fitted with an ionisation system to check that aflame is present. The minimum current for control box operationis 6 µA (Fig. 35).

The burner provides a much higher current, so controls are notnormally required.

However, if it is necessary to measure the ionisation current, dis-connect the plug-socket on the ionisation probe cable and inserta direct current microammeter with a base scale of 100 µA.

Carefully check the polarities!

Gas leaksMake sure that there are no gas leaks on the pipes between thegas meter and the burner.

Gas filterReplace the gas filter when it is dirty.

7 Maintenance

DANGER

The maintenance interventions and the calibrationof the burner must only be carried out by qualified,authorised personnel, in accordance with the con-tents of this manual and in compliance with thestandards and regulations of current laws.

DANGER


DANGER


Wait for the components in contact with heatsources to cool down completely.

The gas combustion system should be checked atleast once a year by a representative of the man-ufacturer or another specialised technician.

The operator must use the required equipmentduring maintenance.

Fig. 35

- +µA

D3097

33 20041790GB

Maintenance

CombustionIf the combustion values measured before starting maintenancedo not comply with applicable legislation or do not indicate effi-cient combustion, consult the Tab. S or contact our TechnicalSupport Service to implement the necessary adjustments. It is advisable to set the burner according to the type of gas usedand following the indications in Tab. S.

Tab. S

7.3 Opening the burner

➤ Remove the tie-rod 1)(Fig. 36) of the head movement lever,undoing the nut 2).

➤ Disconnect the socket 3) of the servomotor.➤ Disconnect the socket 4) of the gas pressure switch.➤ Remove the self-locking nut 5).➤ Remove the screws 6).

At this point, it is possible to open the burner on the hinge.

7.4 Closing the burner

Refit following the steps described but in reverse order; refit allburner components as they were originally assembled.

EN 676Air excess

Max. outputλ ≤ 1.2

Min. outputλ ≤ 1.3

GASCO2 theoretical max. 0% O 2

CO2 % Calibration CO NOX

λ = 1.2 λ = 1.3 mg/kWh mg/kWh

G 20 11.7 9.7 9.0 ≤ 100 ≤ 170

G 25 11.5 9.5 8.8 ≤ 100 ≤ 170

G 30 14.0 11.6 10.7 ≤ 100 ≤ 230

G 31 13.7 11.4 10.5 ≤ 100 ≤ 230

DANGER


DANGER


Wait for the components in contact with heatsources to cool down completely.

Fig. 36

20065547

Carry out all maintenance work and mount thecasing again.

20041790 34 GB

Faults - Probable causes - Solutions

8 Faults - Probable causes - Solutions

WARNING

In the event of a burner lockout, more than twoconsecutive burner reset operations could causedamage to the installation. On the third lockout,contact the Aftersales Service. DANGER

If further lockouts or burner faults occur, interven-tions must only be made by qualified, authorisedpersonnel (as indicated in this manual, and incompliance with the laws and regulations current-ly in force).

Signal Problem Possible cause Recommended remedy

2 blinks Once the pre-purging phase and safety time have passed, the burn-er goes into lockout without the appearance of the flame

The operation solenoid lets little gas through Increase

One of the two solenoid valves does not open. Replace

Gas pressure too low Increase pressure at governor

Ignition electrode incorrectly adjusted Adjust it

Electrode grounded due to broken insulation Replace

High voltage cable defective Replace

High voltage cable deformed by high temperature Replace and protect

Ignition transformer defective Replace

Incorrect valve or transformer electrical wiring Check

Defective control box Replace

A closed valve upline the gas train Open

Air in pipework Bleed air

Gas valves unconnected or with interrupted coil Check connections or replace coil

3 blinks The burner does not switch on, and the lock-out appears

Air pressure switch in operating position Adjust or replace

The burner switches on, but then stops in lockout

Air pressure switch does not switch owing to lack of air pressure.

Air pressure switch incorrectly adjusted. Adjust or replace

Pressure switch pressure test point pipe blocked Clean

Poorly adjusted head Adjust

High pressure in the furnace Connect air pressure switch to fan suction line

Lockout during pre-purging phase

Defective motor control contactor(only three-phase version)

Replace

Defective electrical motor Replace

Motor lockout (defective electrical motor) Replace

4 blinks The burner switches on, but then stops in lockout

Flame simulation Replace the control box

Lockout when burner stops

Permanent flame in the combustion head or flame simulation

Eliminate persistence of flame or replace control box

6 blinks The burner switches on, but then stops in lockout

Defective or incorrectly adjusted servomotor Adjust or replace

7 blinks The burner goes into lockout immediately fol-lowing the appearance of the flame

The operation solenoid lets little gas through Increase

Ionisation probe incorrectly adjusted Adjust

Insufficient ionisation (less than 5 A) Check probe position

Earth probe Withdraw or replace cable

Burner poorly grounded Check grounding

Phase and neutral connections inverted Invert them

Defective flame detection circuit Replace the control box

Burner locks out when shifting from minimum to maximum output and vice versa

Too much air or too little gas Adjust air and gas

Burner goes into lock-out during operation

Probe or ionisation cable grounded Replace worn parts

35 20041790GB

Faults - Probable causes - Solutions

Tab. T

10 blinks The burner does not switch on, and the lock-out appears

Incorrect electrical wiring Check

The burner goes into lockout


Presence of electromagnetic disturbances in the thermostat lines

Filter or eliminate

Presence of electromagnetic disturbance Use the radio disturbance protec-tion kit

No blink The burner does not start

No electrical power supply Check connections

A limiter or safety control device is open Adjust or replace

Line fuse blocked Replace


No gas supply Open the manual valves between contactor and train

Mains gas pressure insufficient Contact your gas company

Minimum gas pressure switch fails to close Adjust or replace

Servomotor fails to move to min. ignition position Replace

The burner continues to repeat the start-up cy-cle, without lockout

The gas pressure in the gas mains lies very close to the value to which the gas pressure switch has been set. The sudden drop in pressure after valve opening causes temporary opening of the pres-sure switch itself, the valve immediately closes and the burner comes to a halt. Pressure increas-es again, the pressure switch closes again and the ignition cycle is repeated. And so on

Reduce the minimum gas pressure switch intervention pressure. Re-place the gas filter cartridge.

Ignition with pulsations Poorly adjusted head Adjust

Ignition electrode incorrectly adjusted Adjust it

Incorrectly adjusted fan air damper: too much air Adjust

Output during ignition phase is too high Reduce

Burner does not reach maximum output

Remote control device TR fails to close Adjust or replace


Defective servomotor Replace

Burner stops with air damper open

Defective servomotor Replace

Signal Problem Possible cause Recommended remedy

20041790 36 GB

Appendix - Accessories

Long head kit

For (B) - (I) positions, refer to paragraph “Maximum dimensions”.

Analogue control signal converter kit

Kit for modulating operation

Potentiometer kit

Continuous purging kit

UV photocell kit

Software interface kit

A Appendix - Accessories

BurnerStandard head length

(mm)Extended head length

(mm)Code

RS 300-400/M BLU 521 (B) - 373 (I) 621 (B) - 473 (I) 3091427

RS 300-400/M BLU 521 (B) - 373 (I) 671 (B) - 523 (I) 3091919

RS 300-400/M BLU 521 (B) - 373 (I) 721 (B) - 573 (I) 20022815

RS 500/M BLU 521 - 357 671 - 507 20028449

Burner Type Code

All models0/2 - 10V

0/4 - 20mA3010390

Burner Output regulator Code

All models RWF 40 BASIC 3010356

All models RWF 40 HIGH 3010357

Burner Probe Adjustment field Code

All models PT 100 temperature - 100...+ 500°C 3010110

All models 4 - 20 mA pressure 0...2.5 bar 3010213

All models 4 - 20 mA pressure 0...16 bar 3010214

Burner Code

All models 3010402

Burner Code

All models 3010094

Burner Code

All models 3010359

Burner Code

All models 3002719

37 20041790GB

Appendix - Accessories

Soundproofing box kit

GPL kit

Spacer kit

Gas trains in compliance with EN 676

Please refer to manual.

Burner Type dB(A) Code

All models C7 10 3010376

Burner Code

RS 300/M BLU 3010445

RS 400-500/M BLU 20012916

RS 800/M BLU 20007822

Burner Code

All models 20008903

20041790 38 GB

Appendix - Electrical panel layout

B Appendix - Electrical panel layout

Index of layouts

2 Indication of references

3 Single-wire output layout

4 Functional layout (RS 300/M BLU)Star-triangle starter functional layout (RS 400-500-650-800/M BLU)

5 Functional layout RMG/M...

6 Functional layout gas train



9 RWF40 kit electrical wiring... internal

10 Electrical wiring that the installer is responsible for

11 RWF40 Functional layout ...

12 RWF40 kit electrical wiring... external

1

2

Sheet no.

/1 .A1

Co-ordinates

Indication of references

39 20041790GB


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Wiring layout key

A1 Electrical control box

B1 Output regulator RWF40 internal

B2 Output regulator RWF40 external

BA Input in current DC 0...20 mA, 4...20 mA

BA1 Input in current DC 0...20 mA, 4...20 mA to modify re-mote setpoint

BP Pressure probe

BP1 Pressure probe

BR Remote setpoint potentiometer

BT1 Thermocouple probe

BT2 Probe Pt100, 2 wires



BTEXT External probe for climatic compensation of the set-point

BV Input in voltage DC 0...1 V, 0...10 V

BV1 Input in voltage DC 0...1 V, 0...10 V to modify remotesetpoint

F1 Fan motor thermal relay

F3 Auxiliary fuse

G Signal converter for UV cell

H1 Light signalling burner on

H2 Fan motor lock-out warning lamp

ION Ionisation probe

KL1 Direct and line start-up contactor for star/trianglestarter (excluding RS 300/M BLU)

KT1 Triangle contactor for star/triangle starter(excluding RS 300/M BLU)

KS1 Star contactor for star/triangle starter(excluding RS 300/M BLU)

KSM Relay

KST1 Star/triangle starter timer

K1 Volt-free fan on contacts output relay

K2 Clean contacts output relay motor lockout

K3 Clean contacts output relay burner lockout

K6 Clean contacts output relay burner switched on

MV Fan motor

PA Air pressure switch

PE Burner earth

PGMin Minimum gas pressure switch

PGM Maximum gas pressure switch

RS Remote reset switch

S1 Emergency stop button

S2 Off / automatic / manual selector

S4 Power increase / power reduction selector

SH3 Burner reset button and lock-out signal

SM Servomotor

TA Ignition transformer

TL Limit thermostat/pressure switch

TR Adjustment thermostat/pressure switch

TS Safety thermostat/pressure switch

Y Gas adjustment valve + gas safety valve

YVPS Valve leak detection device

X1 Main terminal supply board

X2 Terminal board for RWF40 kit and UV sensor kit

XAUX Auxiliary terminal board

XPGM Maximum gas pressure switch connector

XPGM1 Maximum gas pressure switch connector

XRWF RWF40 Terminal board

XS Flame sensors connector

XSM Servomotor connector

UV UV Photocell

20041790 58 GB

Subject to modifications

RIELLO S.p.A.

I-37045 Legnago (VR)

Tel: +39.0442.630111

http:// www.riello.it

http:// www.riello.com

forced draught gas burners · 2016. 1. 5. · 887t rs 800/m blu 1200 - 8100 kw 887t80 rs 800/m blu...

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