Riello Gulliver BS1/M Quick start guide

Installation, use and maintenance instructions
20096985 (2) - 06/2015
Forced draught gas burners
Progressive two-stage or modulating operation
CODE MODEL TYPE
20096670 BS1/M 915M
3762200 - 3762250 BS2/M 916M
3762300 - 3762350 BS3/M 917M
3762400 - 3762450 BS4/M 918M
GB

Translation of the original instructions

1
20096985
GB
Index
1 Declarations................................................................................................................................................................................ 3
2 Information and general warnings............................................................................................................................................ 5
2.1 Information about the instruction manual.................................................................................................................... 5
2.1.1 Introduction.................................................................................................................................................................. 5
2.1.2 General dangers.......................................................................................................................................................... 5
2.1.3 Other symbols............................................................................................................................................................. 5
2.1.4 Delivery of the system and the instruction manual...................................................................................................... 6
2.2 Guarantee and responsibility....................................................................................................................................... 6
3 Safety and prevention................................................................................................................................................................ 7
3.1 Introduction.................................................................................................................................................................. 7
3.2 Personnel training ....................................................................................................................................................... 7
4 Technical description of the burner......................................................................................................................................... 8
4.1 Burner designation...................................................................................................................................................... 8
4.2 Models available.......................................................................................................................................................... 8
4.3 Burner categories - Countries of destination............................................................................................................... 8
4.4 Technical data............................................................................................................................................................. 9
4.5 Electrical data.............................................................................................................................................................. 9
4.6 Maximum dimensions................................................................................................................................................ 10
4.7 Firing rates ................................................................................................................................................................ 10
4.8 Test boiler.................................................................................................................................................................. 12
4.8.1 Commercial boilers.................................................................................................................................................... 12
4.9 Burner description..................................................................................................................................................... 12
4.10 Burner equipment...................................................................................................................................................... 12
4.11 Control box (LME22.2...)........................................................................................................................................... 13
4.12 Servomotor (SQN91.57)............................................................................................................................................ 14
5 Installation ................................................................................................................................................................................ 15
5.1 Notes on safety for the installation............................................................................................................................ 15
5.2 Instructions to avoid burnout or bad combustion of the burner................................................................................. 15
5.3 Handling.................................................................................................................................................................... 15
5.4 Preliminary checks.................................................................................................................................................... 15
5.4.1 Control of the supply ................................................................................................................................................. 15
5.4.2 Control of burner characteristics ............................................................................................................................... 16
5.5 Operating position ..................................................................................................................................................... 16
5.6 Securing the burner to the boiler............................................................................................................................... 17
5.7 Combustion head adjustment.................................................................................................................................... 18
5.7.1 Removing the head assembly................................................................................................................................... 18
5.7.2 Reassembling the head assembly ............................................................................................................................ 18
5.8 Positioning the probe - electrode............................................................................................................................... 19
5.9 Gas feeding............................................................................................................................................................... 20
5.9.1 Gas feeding line ........................................................................................................................................................ 20
5.9.2 Connection of the burner pressure test point to the gas train ................................................................................... 20
5.9.3 Gas train.................................................................................................................................................................... 21
5.9.4 Gas pressure............................................................................................................................................................. 21
5.10 Electrical wiring ......................................................................................................................................................... 22
5.10.1 Electrical system carried out by the factory............................................................................................................... 23
5.10.2 Electrical wiring to be carried out by the installer...................................................................................................... 24
6 Start-up, calibration and operation of the burner ................................................................................................................. 25
6.1 Notes on safety for the first start-up.......................................................................................................................... 25
6.2 Adjustments prior to ignition...................................................................................................................................... 25
6.3 First ignition............................................................................................................................................................... 25
6.4 Air damper servomotor adjustment........................................................................................................................... 26
6.5 Gas pressure switch.................................................................................................................................................. 26
6.6 Air pressure switch.................................................................................................................................................... 27
6.7 Combustion adjustment............................................................................................................................................. 27

20096985
2
GB
Index
6.8 Operation sequence of the burner .............................................................................................................................27
7 Maintenance ..............................................................................................................................................................................28
7.1 Notes on safety for the maintenance.........................................................................................................................28
7.2 Maintenance programme...........................................................................................................................................28
7.2.1 Maintenance frequency..............................................................................................................................................28
7.2.2 Checking and cleaning...............................................................................................................................................28
7.3 Opening the burner....................................................................................................................................................29
8 Faults - Possible causes - Solutions.......................................................................................................................................30
A Appendix - Accessories ...........................................................................................................................................................31

3
20096985
GB
Declarations
1 Declarations
Declaration of Conformity in accordance with ISO / IEC 17050-1
Manufacturer: RIELLO S.p.A.
Address: Via Pilade Riello, 7
37045 Legnago (VR)
Product: Forced draught gas burner
Model: BS1/M - BS2/M - BS3/M - BS4/M
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:
The quality is guaranteed by a quality and management system certified in accordance with UNI EN ISO 9001.
Manufacturer's Declaration
RIELLO S.p.A. declares that the following products comply with the NOx emission limits specified by German standard “1. BIm-
SchV revision 26.01.2010”.
Product Type Model Output
Forced draught gas burner 917M BS3/M 48 - 195 kW
918M BS4/M 68 - 250 kW
Legnago, 21.05.2015 Executive General Manager
RIELLO S.p.A. - Burner Department Research & Development Director RIELLO S.p.A. - Burner Department
Mr. U. Ferretti Mr. F. Comencini
BS1/M CE- in progress Class 3 (EN 676)
BS2/M - BS3/M - BS4/M CE-0085BN0609 Class 3 (EN 676)

20096985
4
GB
Declarations
Declaration of Conformity A.R. 8/1/2004 & 17/7/2009 – Belgium
Manufacturer: RIELLO S.p.A.
37045 Legnago (VR) Italy
Tel. ++39.0442630111
www.rielloburners.com
Distributed by: RIELLO NV
Ninovesteenweg 198
9320 Erembodegem
Tel. [phone]
Fax. [phone]
e-mail. [email protected]
URL. www.riello.be
This document certifies that the series of devices specified below is in compliance with the model described in the EC Declaration of
Conformity and has been manufactured and distributed in compliance with the requirements defined in the Legislative Decree of
January 8th 2004 and July 17th 2009.
Type of product: Forced draught gas burner
Model: BS1/M - BS2/M - BS3/M - BS4/M
Regulation applied: EN 676 and A.R. of January 8th 2004 - July 17th 2009
Values measured: BS1/M
BS2/M
BS3/M
BS4/M
Max. CO: 9 mg/kWh
Max. NOx: 58 mg/kWh
Max. CO: 9 mg/kWh
Max. NOx: 58 mg/kWh
Max. CO: 8 mg/kWh
Max. NOx: 48 mg/kWh
Max. CO: 5 mg/kWh
Max. NOx: 53 mg/kWh
Controlling organisation: TÜV SÜD Industrie Service GmbH
Ridlerstrase, 65
80339 Munchen DEUTSCHLAND
Legnago, 21.05.2015 Executive General Manager
RIELLO S.p.A. - Burner Department Research & Development Director RIELLO S.p.A. - Burner Department
Mr. U. Ferretti Mr. F. Comencini

5
20096985
GB
Information and general warnings
2.1 Information about the instruction manual
2.1.1 Introduction
The 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 for
any necessary consultation and must accompany the burner
even if it is transferred to another owner or user, or to
another system. If the manual is lost or damaged, another
copy 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 the
burner.
Symbols used in the manual
In some parts of the manual you will see triangular DANGER
signs. Pay great attention to these, as they indicate a situation of
potential danger.
2.1.2 General dangers
The dangers can be of 3 levels, as indicated below.
2.1.3 Other symbols
Abbreviations used
Ch. Chapter
Fig. Figure
Page Page
Sec. Section
Tab. 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 or
long-term health risks.
WARNING
This symbol indicates operations which, if not car-
ried out correctly, may cause serious injury, death
or 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 flammable
materials.
DANGER: BURNING
This symbol indicates the risks of burns due to
high temperatures.
DANGER: CRUSHING OF LIMBS
This symbol indicates the presence of moving
parts: danger of crushing of limbs.
WARNING: MOVING PARTS
This symbol indicates that you must keep limbs
away from moving mechanical parts; danger of
crushing.
DANGER: EXPLOSION
This symbol signals places where an explosive at-
mosphere may be present. An explosive atmos-
phere is defined as a mixture - under atmospheric
conditions - of air and flammable substances in
the form of gases, vapours, mist or dust in which,
after ignition has occurred, combustion spreads to
the entire unburned mixture.
PERSONAL PROTECTION EQUIPMENT
These symbols indicate the equipment that must
be worn and kept by the operator for protection
against threats against safety and/or health while
at work.
OBLIGATION TO ASSEMBLE THE COVER AND
ALL THE SAFETY AND PROTECTION DEVICES
This symbol signals the obligation to reassemble
the cover and all the safety and protection devices
of the burner after any maintenance, cleaning or
checking operations.
ENVIRONMENTAL PROTECTION
This symbol gives indications for the use of the
machine with respect for the environment.
IMPORTANT INFORMATION
This symbol indicates important information that
you must bear in mind.
➤This symbol indicates a list.

20096985
6
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 the
room 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 manufacturer
or 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 date of
installation, in accordance with the regulations in force and/or the
sales contract. At the moment of the first start-up, check that the
burner is integral and complete.
In particular, the rights to the guarantee and the responsibility will
no longer be valid, in the event of damage to things or injury to
people, if such damage/injury was due to any of the following
causes:
➤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;
➤continuation of use of the burner when a fault has occurred;
➤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 those
burner components most likely to be subject to wear and
tear;
➤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 contents of this
manual.
.........................................................................................
.........................................................................................
.........................................................................................
.........................................................................................
WARNING
Failure to observe the information given in this
manual, operating negligence, incorrect installa-
tion and carrying out of non authorised modifica-
tions will result in the annulment by the
manufacturer of the guarantee that it supplies with
the burner.

7
20096985
GB
Safety and prevention
3.1 Introduction
The burners have been designed and built in compliance with
current regulations and directives, applying the known technical
rules of safety and envisaging all the potential danger situations.
It is necessary, however, to bear in mind that the imprudent and
clumsy use of the equipment may lead to situations of death risk
for the user or third parties, as well as the damaging of the burner
or other items. Inattention, thoughtlessness and excessive confi-
dence often cause accidents; the same applies to tiredness and
sleepiness.
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 uses expressly foreseen by the manufactur-
er;
the type and pressure of the fuel, the voltageand frequency of the
electrical power supply, the minimum and maximum deliveries for
which the burner has been regulated, the pressurisation of the
combustion 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 must
be quickly eliminated.
➤Opening or tampering with the burner components is not
allowed, apart from the parts requiring maintenance.
➤Only those parts envisaged by the manufacturer can be
replaced.
3.2 Personnel training
The user is the person, body or company that has acquired the
machine 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 knows
the 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 or
dangerous 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 therefore
declines any and every responsibility for any damage that
may be caused by the use of non-original parts.
In addition:
3 Safety and prevention
WARNING
The manufacturer guarantees safety and proper
functioning only if all burner components are intact
and positioned correctly.
➤must take all the measures necessary to pre-
vent unauthorised people gaining access to
the machine;
➤the user must inform the manufacturer if
faults or malfunctioning of the accident pre-
vention systems are noticed, along with any
presumed danger situation;
➤personnel must always use the personal pro-
tective equipment envisaged by legislation
and follow the indications given in this man-
ual.

20096985
8
GB
Technical description of the burner
4.1 Burner designation
4.2 Models available
Tab. A
4.3 Burner categories - Countries of destination
Tab. B
4 Technical description of the burner
Designation Combustion head Voltage Code
GULLIVER BS1/M TC 1/230/50 20096670
GULLIVER BS2/M TC 1/230/50 3762200 - 3762250
GULLIVER BS3/M TC 1/230/50 3762300 - 3762350
GULLIVER BS4/M TC 1/230/50 3762400 - 3762450
Range:
Size
Fuel: Natural gas
LPG
Variations:
Electrical supply 1/230/50
1/220/60
B S 1 1/230/50
BASIC DESIGNATION
EXTENDED DESIGNATION
1/230V/50Hz
1/220V/60Hz
F Light industrial process
M Progressive two-stage or modulating
D Two-stage
S
SP
Head: TC Standard head
TL Long head
/M
of the system:
Standard Emission
Low NOx
R
B
TC
Country of destination Gas category
SE - FI - AT - GR - DK - ES - GB - IT - IE - PT - IS - CH - NO I
2H
DE I
2ELL
NL I
2L
FR I
2Er
BE I
2E(R)B
LU - PL I
2E

9
20096985
GB
Technical description of the burner
4.4 Technical data
Tab. C
(1)
Reference conditions: Ambient temperature 20°C - Gas temperature 15°C - Barometric pressure 1013 mbar - Altitude 0 m a.s.l.
(2)
∆p between the input and output pressure max. 50 mbar.
(3)
Sound pressure measured in manufacturer's combustion laboratory, with burner operating on test boiler and at maximum output. The sound
power is measured with the “Free Field” method, as per EN 15036, and according to an accurate “Accuracy: Category 3” measurement, as
described in EN ISO 3746.
4.5 Electrical data
Tab. D
Type 915M 916M 917M 918M
Thermal output
(1)
kW
Mcal/h 16/19 - 52 13.8/16.4 - 44.7 26/49 - 91 22.4/42.1 - 78.2 48/79 - 195 41.3/67.9 - 167.7 68/140 - 250 58.5/120.4 - 215
Natural gas (Family 2) NCV: 8 - 12 kWh/Nm
3
= 7000 - 10.340 kcal/Nm
3
Pressure: min. 20 mbar – max. 100 mbar
(2)
Operation Intermittent (FS1)
Use Boilers: water and diathermic oil
Ambient temperature °C 0 - 50
Combustion air temperature °C max 60
Noise levels
(3)
Sound pressure
Sound power dB(A) 59 70 60 71 65 76 67 78
Weight kg 11 12 16 20
Type 915M 916M 917M 918M
Electrical supply 1/230V/50Hz
Fan motor rpm
V
W
A
2750
230
90
0.8
2750
230
90
0.8
2800
230
150
1.8
2720
230
250
1.9
Capacitor µF 4 4 6.3 8
Ignition transformer Primary 230V - 45 VA
Secondary 1 x 15 kV - 25 mA
Absorbed electrical power kW 0.14 0.18 0.35 0.53
Protection level IP40

20096985
10
GB
Technical description of the burner
4.6 Maximum dimensions
The maximum dimensions of the flange and burner are given in
Fig. 1.
Tab. E
4.7 Firing rates
The burner output is chosen from within the diagram area (Fig. 3).
Tab. F
Tab. G
Fig. 1
F
HG
A
D E
I
R
S
N
45°
45°
11 O
P
B
C
M
ø
L
D4429
T
U
Model A B C D E F G H I L - U M N O P R S T
BS1/M 285 280 316 125.5 125.5 351 234.5 116.5 174 89.5 230 192 66 167 140 170 8
BS2/M 285 280 325 125.5 125.5 352 238-252 114-100 174 106 230 192 66 167 140 170 18
BS3/M 330 345 391 150 150 390 262-280 128-110 196 129 285 216 76.5 201 160 190 21
BS4/M 330 345 392 150 150 446 278-301 168-145 212 137 286 218 80.5 203 170 200 21
WARNING
To ensure the burner works correctly, the start-up
should always occur within the relative firing rate,
as indicated in .
Model Ignition output
(kW)
BS1/M 16 - 19
BS2/M 26 - 49
BS3/M 48 - 79
BS4/M 68 - 140
WARNING
The firing rates (Fig. 3) were obtained at an ambi-
ent temperature of20 °C, at a barometric pressure
of 1013 mbar (about 0 m a.s.l.) and with the com-
bustion head regulated as indicated on page 18.
WARNING
Only for models BS3/M and BS4/M
It is necessary to remove the sound-absorbing
pre-sheared part freeing the air inlet slots on the
cover (see Fig. 2), in order to ensure the burner
operates beyond the burner output indicated in
Tab. G.
Model
BS3/M > 140 kW
BS4/M > 200 kW
S7025
Fig. 2
A

11
20096985
GB
Technical description of the burner
50.0000
0
-0.5
0
0.8
1.6
2.4
3.2
4.0
4.8
5.6
50 100 150 200
100.000 150.000
Pressure in the combustion
kW
kcal/h
-0.2
0
0.8
1.6
2.4
3.2
0 20 40 60
80
0 50.000
Fig. 3
chamber – mbar
Thermal power
Pressure in the combustion
chamber – mbar
kW
kcal/h
BS1/M
BS2/M BS3/M
A
20096850
20097924
Thermal power
FIRING
RATE
BS2/M
FIRING
RATE
BS3/M
FIRING
RATE
BS1/M
150.000100.00050.000
50 100 150 200
-0.5
0
0.8
1.6
2.4
3.2
4.0
4.8
5.6
250
200.000
Thermal power
kW
kcal/h
Pressure in the combustion
chamber – mbar
A
20097925
BS4/M
FIRING
RATE
BS3/M

20096985
12
GB
Technical description of the burner
4.8 Test boiler
The firing rate has been defined according to EN 676 standard.
4.8.1 Commercial boilers
The burner-boiler matching is assured if the boiler conforms to
EN 303 and the combustion chamber dimensions are similar to
those shown in the diagram EN 676.
For applications where the boiler does not conform to EN 303, or
where the combustion chamber is much smaller than the dimen-
sions given in EN 676, please consult the manufacturers.
4.9 Burner description
1 Flange with insulating gasket
2 Combustion head
3 Control box
4 Reset button with lockout lamp
5 Servomotor unit
6 Combustion head adjustment screw
7 Air pressure switch
8 Air pressure test point in the combustion chamber (to be
connected to the gas valve unit)
9 4-pole socket for 2nd stage / modulating connection
10 7-pole socket for burner power supply
11 6-pole socket for train connection
12 Air pressure test point (to be connected to the gas valve unit)
13 Switches for:
- automatic / manual (AUT / MAN)
- raising / lowering output (+/-)
14 Capacitor
15 Noise reduction filter
4.10 Burner equipment
Flange with insulating gasket. . . . . . . . . . . . . . . . . . . . . . . No. 1
Elbow joint G 1/8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Flange screws and nuts for boiler fixing. . . . . . . . . . . . . . . No. 4
4-pin plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Screw and nut for flange . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
7-pin plug -. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Blue plastic pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Spare parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Fig. 4
D4428
1
11
2
3
4
6
5
9
13
10
12 7
8
14 15

13
20096985
GB
Technical description of the burner
4.11 Control box (LME22.2...)
Warnings
➤All interventions (assembly and installation operations,
assistance, etc.) must be carried out by qualified personnel.
➤Before modifying the wiring in the control box connection
area, fully disconnect the system from the power supply
(omnipolar separation).
➤Protection against electrocution from the control box and all
connected electric components is obtained with the correct
assembly.
➤Before any intervention (assembly and installation opera-
tions, assistance, etc.), ensure the wiring is in order and that
the parameters are correctly set, then make the safety
checks.
➤Falls and collisions can negatively affect the safety func-
tions. In this case, the control box must not be operated,
even if it displays no evident damage.
For safety and reliability, comply with the following instruc-
tions:
– avoid conditions that can favour the development of conden-
sate and humidity. Otherwise, before switching on again,
make sure the control box is perfectly dry.
– Static charges must be avoided since they can damage the
control box’s electronic components when touched.
Use
The control box is a control and supervision system of medium
and large capacity forced draught burners, for intermittent opera-
tion (at least one controlled shutdown every 24 hours).
Installation notes
• Check the electric wiring inside the boiler complies with the
national and local safety regulations.
• Install switches, fuses, earth connection etc. in compliance
with local regulations.
• Do not confuse the powered conductors with the neutral
ones.
• Ensure that spliced wires cannot get into contact with neigh-
bouring terminals. Use adequate ferrules.
• Arrange the H.V. ignition cables separately, as far as possi-
ble from the control box and the other cables.
• When wiring the unit, make sure the 230V AC mains voltage
cables are run strictly separate from extra low-voltage cables,
to avoid the risk of electrocution.
Electrical wiring of the flame detector
It is important for signal transmission to be almost totally free
of any disturbances or loss:
• Always separate the detector cables from the other cables:
– the line capacity reduces the magnitude of the flame sig-
nal;
– use a separate cable.
• The cable length must not exceed 1 m.
• Respect the polarity
• Insulation resistance:
– must be at least 50 MΩbetween the ionisation probe and
the earth;
– a dirty detector reduces the insulation resistance, fostering
leakage currents.
• The ionisation probe is not protected against the risk of elec-
trocution. When connected to the electricity supply, the ionisa-
tion probe must be protected against any accidental contact.
• Position the ionisation probe so that the ignition spark cannot
form an arc on the probe (risk of electric overcharge).
Technical data
Tab. H
WARNING
To avoid accidents, material or environmental
damage, observe the following instructions!
The control box is a safety device! Avoid opening
or modifying it, or forcing its operation. Riello
S.p.A. cannot assume any responsibility for dam-
age resulting from unauthorised interventions!
Mains voltage AC 230V -15% / +10%
Mains frequency 50/60 Hz ±6%
Built-in fuse T6.3H 250V
Energy consumption 12 VA
Weight approx. 160 g
Protection level IP40
Safety class I
Tightening torque of M4 screw Max. 0,8 Nm
Allowed cable length
Thermostat
Air pressure switch
CPI
Gas pressure switch
Flame detector
Remote reset
max. 20 m at 100 pF/m
max. 1 m at 100 pF/m
max. 1 m at 100 pF/m
max. 20 m at 100 pF/m
max. 1 m
max. 20 m at 100 pF/m
Environmental conditions
Storage
Climatic conditions
Mechanical conditions
Temperature range
Humidity
DIN EN 60721-3-1
Class 1K3
Class 1M2
-20...+60°C
< 95% RH
Fig. 5
S9255

20096985
14
GB
Technical description of the burner
4.12 Servomotor (SQN91.57)
Warnings
➤All interventions (assembly and installation operations,
assistance, etc.) must be carried out by qualified personnel.
➤Before modifying the wiring in the connection area of the
servomotor, fully disconnect the burner control device from
the power supply (omnipolar separation).
➤To avoid the risk of electrocution, protect the connection ter-
minals in a suitable manner and correctly fix the cover.
➤Check the wiring is in order.
➤Falls and collisions can negatively affect the safety func-
tions. In this case, the unit must not be operated, even if it
displays no evident damage.
Assembly notes
➤Check the relevant national safety standards are respected.
➤The connection between the actuator command shaft and
the control element must be rigid, without any mechanical
play.
➤To avoid an excessive load on the bearings due to rigid
hubs, the use of compensation clutches without any
mechanical play is recommended (e.g. metal bellows-type
clutches).
Installation notes
➤Arrange the H.V. ignition cables separately, as far as possi-
ble from the control box and the other cables.
➤To prevent the risk of electrocution, check that the 230V AC
section of the servomotor is completely separated from the
low voltage section.
➤The static torque is reduced when the electrical supply of the
actuator is switched off.
➤The housing cover may only be removed for short periods of
time for wiring or when making the addressing. In similar
cases, make sure that dust or dirt does not penetrate inside
the actuator.
➤The actuator comprises a PCB with ESD-sensitive compo-
nents.
➤The top side of the board carries a cover which affords pro-
tection against direct contact. This protective cover must not
be removed! The underside side of the board must not be
touched.
Technical data
Tab. I
WARNING
To avoid accidents, material or environmental
damage, observe the following instructions!
Avoid opening, modifying or forcing the actuators.
WARNING
During the maintenance or replacement of the
actuators, be careful not to invert the connec-
tors.
Model SQN91.57
Operating voltage AC 220V –15 %...AC 240V +10 %
Mains frequency 50/60 Hz ±6%
Safety class DIN EN 60730 compliant
Energy consumption 8 VA
Rotation direction Clockwise
Holding torque
0.8…2.4 Nm
Operation time
4…24 s
Weight Approx. 550 g
Environmental conditions:
Operation
Climatic conditions
Mechanical conditions
Temperature range
Humidity
DIN EN 60721-3-3
Class 3K5
Class 3M2
-20...+60°C
< 95% RH
WARNING
Condensation, the formation of ice and the entry
of water are prohibited!

15
20096985
GB
Installation
5.1 Notes on safety for the installation
After carefully cleaning all around the area where the burner is to
be installed, and arranging for the environment to be illuminated
correctly, proceed with the installation operations.
5.2 Instructions to avoid burnout or bad combustion of the burner
1 The burner can not be installed outside as it is suitable for
operation in closed rooms only.
2 The premises the burner operates in must have openings
for the air need for the combustion.
To be sure about this, you have to control CO2and CO in
the exhaust gases with all the windows and doors closed.
3 If there are air extractors in the premises the burner works,
make sure that there are openings for air to be taken in that
are big enough to ensure the required air change; In any
case, check that when the burner stops the extractors do
not draw hot fumes from pipes through the burner.
4 When the burner is stopped, the smoke pipe must be kept
open and a natural draft created in the combustion chamber.
If the smoke pipe is closed, the burner must be drawn back
till the extraction of blast tube from the furnace. Before oper-
ating in this way take the voltage off.
5.3 Handling
The transport weight is given in chapter “Technical data” on page
9.
Observe the permissible ambient temperatures for storage and
transport: -20 ..... + 70 °C, with max. relative humidity. 80%.
5.4 Preliminary checks
5.4.1 Control of the supply
5 Installation
DANGER
All the installation, maintenance and disassembly
operations must be carried out with the electricity
supply disconnected.
WARNING
The installation of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
DANGER
Combustion air inside the boiler must be free from
hazardous mixes (e.g.: chloride, fluoride, halo-
gen); if present, it is highly recommended to carry
out cleaning and maintenance more frequently.
After positioning the burner near the installation
point, 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.
The operator must use the required equipment
during installation.
CAUTION
After removing all the packaging, check the integ-
rity of the contents.
In the event of doubt, do not use the burner; con-
tact the supplier.
The packaging elements (cardboard box, clips,
plastic bags, etc.) must not be abandoned as they
are potential sources of danger and pollution; they
should be collected and disposed of in the appro-
priate places.

20096985
16
GB
Installation
5.4.2 Control of burner characteristics
Check the identification label of the burner (Fig. 6), showing:
A the burner model;
B the burner type;
C the cryptographic year of manufacture;
D the serial number;
E the data for electrical supply and the protection level;
F the electrical power consumption;
G the data of the burner's minimum and maximum output pos-
sibilities (see Firing rate)
Warning. The burner output must be within the boiler's firing
rate.
5.5 Operating position
WARNING
A burner label that has been tampered with, re-
moved or is missing, along with anything else that
prevents the definite identification of the burner
makes any installation or maintenance work diffi-
cult.
WARNING
The figure of the label (Fig. 6) is indicative. Some
of the data may be arranged in a different position.
R.B.L. TIPO TYP
TYPE
II2ELL 3B/P DE
II2H3B/P
AT,CH,IS
II2H3 GB,IE,IT
N2L3B/P LU
GAS
GAZ
FAM.2
FAM.3
I2E(P)B.I3 BE
II2L3B/P NL
II2Er3P FR
Icc A
Imax A PESO kg RIELLO S.p.A.
I-37048 Legnago (VR)
AB
F
B
G
DE
C
Fig. 6
20098188
WARNING
➤The burner is set up to operate only in posi-
tions 1, 2, 3,5,6 and 7 (Fig. 7).
➤Installation 1is preferable, as it is the only
one that allows the maintenance operations
as described in this manual.
➤The installation layout illustrated in position 5
is only possible using the “MULTI-BLOC rota-
tion kit”, to be ordered separately.
DANGER
➤Any other position could compromise the cor-
rect operation of the appliance.
➤Installation 4are forbidden for safety rea-
sons.
Fig. 7
D4450
2 3 4
5
1
6 7

17
20096985
GB
Installation
5.6 Securing the burner to the boiler
➤If necessary, widen the insulating gasket holes (Fig. 8), tak-
ing care not to damage them.
➤Put on the flange 5)(Fig. 10) the pressure test point 7) sup-
plied with the burner.
The burner can be fixed with the variable position A) as shown in
Fig. 9.
Tab. J
➤Fix the flange 5) to the door of the boiler 1)(Fig. 10) placing
the insulating gasket 3) in between using the screws 4) and
(if necessary) the nuts 2), but keeping one of the two top
screws 4) loose.
➤Insert the combustion head of the burner in the flange 5),
tighten the flange with the screw 6), then lock the screw 4)
which was loose.
➤Check that the pressure test point 7) can actually measure
the pressure in the chamber through the insulating gasket
3). If this signal is not secure, inert the socket directly con-
nected to the combustion chamber (for example, through the
pipe of the inspection window, if available).
Provide an adequate lifting system of the burner.
Model A (mm)
BS1/M 116 ÷ 70
BS2/M 114 ÷ 100
BS3/M 128 ÷ 110
BS4/M 167.5 ÷ 145
CAUTION
The lack of connection to an effective pressure
test point of the combustion chamber could lead to
an unsafe operation and to possible ignition diffi-
culties.
WARNING
In any event, make sure that the combustion head
crosses the entire thickness of the boiler door.
WARNING
The seal between burner and boiler must be
airtight.
Fig. 8
D5012
Fig. 9
D5012
A
Fig. 10
E9251
6 3
1
2
4
4
7
5

20096985
18
GB
Installation
5.7 Combustion head adjustment
The adjustment of the combustion head varies depending on the
burner output.
This is carried out by turning the adjustment screw 6)(Fig. 11)
clockwise or anti-clockwise until the notch on the regulating rod
2) lines up with the outside surface of the head assembly 1).
Fig. 11 shows the head regulating rod set on notch 3.5.
Example for the BS3/M burner
The diagram (Fig. 12) is indicative and shows the calibration of
the combustion head in relation to the burnt output.
To ensure the burner works efficiently, we suggest adjusting the
combustion head according to the requirements of the specific
boiler.
The burner is installed in a 100 kW boiler. Considering an effi-
ciency of 90%, the burner must supply around 110 kW; for this
burner output the adjustment should be on notch 3.5.
5.7.1 Removing the head assembly
To remove the head assembly, it is necessary to:
➤make sure that the servomotor 7)(Fig. 11) is in a closed posi-
tion (CAM II = 0);
➤disconnect the connections 3) and 5);
➤unscrew the screws 4) and remove the servomotor 7).
➤Loosen the screws 9)(Fig. 11);
➤loosen the screws 8) and remove the head assembly sup-
port 1) slightly rotating to the right.
5.7.2 Reassembling the head assembly
Reverse the procedure above to put back the head assembly 1)
as it was before.
WARNING
The rotating shaft 10)(Fig. 11) operated by the
servomotor 7) is equipped with a safety mecha-
nism 11) that prevents it from accidentally rotating
during maintenance operations.
CAUTION
Take care not to change the setting position on
the elbow-bracket (2) when dismantling.
CAUTION
Tighten the screws 9), without fully locking them.
Lock them with a tightening torque of 3 - 4 Nm.
WARNING
Check that when operating there are no gas leaks
from the screw housings.
Fig. 11
E9223
10
9
1
6
11
1 2
4 7
3
5
8
Fig. 12
kcal/h kW
0 82 4 6
210
10
50
130
170
90
250
10
170,000
50,000
130,000
90,000
10,000
210,000
20096858
BS4/M
BS3/M
BS2/M
BS1/M