Riello RL 190/M Quick start guide

20166451 (1) - 11/2019
Installation, use and maintenance instructions
Light oil burners
Progressive two-stage or modulating operation
CODE MODEL TYPE
20166488 RL 190/M 674 T1
20166490 RL 190/M 674 T1
20169231 RL 190/M 674 T1
GB

Translation of the original instructions

1 20166451
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Contents
1 Declarations................................................................................................................................................................................ 3
2 Information and general warnings............................................................................................................................................ 4
2.1 Information about the instruction manual .................................................................................................................... 4
2.1.1 Introduction.................................................................................................................................................................. 4
2.1.2 General dangers.......................................................................................................................................................... 4
2.1.3 Other symbols ............................................................................................................................................................. 4
2.1.4 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 Technical data ............................................................................................................................................................. 8
4.4 Electrical data.............................................................................................................................................................. 8
4.4.1 Weight - approximate measurements ......................................................................................................................... 8
4.5 Overall dimensions...................................................................................................................................................... 9
4.6 Standard equipment .................................................................................................................................................... 9
4.7 Firing rates ................................................................................................................................................................ 10
4.8 Test boiler.................................................................................................................................................................. 11
4.9 Commercial boilers.................................................................................................................................................... 11
4.9.1 Smoke ducts.............................................................................................................................................................. 11
4.10 Burner description ..................................................................................................................................................... 12
4.11 Electrical panel description........................................................................................................................................ 13
4.12 Control box RFGO-A23............................................................................................................................................. 14
4.13 Servomotor (SQN31...).............................................................................................................................................. 15
5 Installation ................................................................................................................................................................................ 16
5.1 Notes on safety for the installation ............................................................................................................................ 16
5.2 Handling .................................................................................................................................................................... 16
5.3 Preliminary checks .................................................................................................................................................... 16
5.4 Operating position ..................................................................................................................................................... 17
5.5 Boiler plate ................................................................................................................................................................ 17
5.6 Blast tube length........................................................................................................................................................ 17
5.7 Securing the burner to the boiler............................................................................................................................... 18
5.8 Electrode positions .................................................................................................................................................... 18
5.9 Nozzle installation ..................................................................................................................................................... 19
5.9.1 Nozzle selection ........................................................................................................................................................ 19
5.10 Nozzle assembly ....................................................................................................................................................... 19
5.11 Combustion head adjustment.................................................................................................................................... 20
5.12 Light oil supply........................................................................................................................................................... 21
5.12.1 Hydraulic connections ............................................................................................................................................... 22
5.12.2 Hydraulic circuit diagram ........................................................................................................................................... 22
5.13 Pump ......................................................................................................................................................................... 23
5.13.1 Technical data ........................................................................................................................................................... 23
5.13.2 Priming pump ............................................................................................................................................................ 23
5.14 Electrical connections................................................................................................................................................ 24
5.14.1 Supply cables and external connections passage .................................................................................................... 25
5.15 Calibration of the thermal relay ................................................................................................................................. 25
5.16 Motor rotation ............................................................................................................................................................ 25
6 Start-up, calibration and operation of the burner ................................................................................................................. 26
6.1 Notes on safety for the first start-up .......................................................................................................................... 26
6.2 Burner ignition ........................................................................................................................................................... 26
6.3 Operation................................................................................................................................................................... 26
6.3.1 MIN output................................................................................................................................................................. 27
6.3.2 MAX output................................................................................................................................................................ 27

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Contents
6.3.3 Intermediate outputs ..................................................................................................................................................28
6.3.4 Servomotor ................................................................................................................................................................28
6.4 Pressure switch adjustment .......................................................................................................................................29
6.4.1 Oil pressure switch.....................................................................................................................................................29
6.5 Operation sequence of the burner .............................................................................................................................30
6.5.1 Burner start-up ...........................................................................................................................................................30
6.5.2 Steady state operation ...............................................................................................................................................30
6.5.3 Ignition failure.............................................................................................................................................................30
6.5.4 Burner flame goes out during operation.....................................................................................................................30
6.6 Final checks ...............................................................................................................................................................30
7 Maintenance ..............................................................................................................................................................................31
7.1 Notes on safety for the maintenance .........................................................................................................................31
7.2 Maintenance programme ...........................................................................................................................................31
7.2.1 Maintenance frequency..............................................................................................................................................31
7.2.2 Checking and cleaning...............................................................................................................................................31
7.2.3 Safety components ....................................................................................................................................................32
7.3 Opening the burner ....................................................................................................................................................33
7.4 Closing the burner......................................................................................................................................................33
8 LED indicator and special function.........................................................................................................................................34
8.1 Description of LED lamps ..........................................................................................................................................34
8.2 Check mode function .................................................................................................................................................34
8.3 Flame control lock-out or emergency stop condition .................................................................................................34
8.4 LED lamps: burner operating status ..........................................................................................................................35
9 Problems - Causes - Remedies signalled by LED indicators ...............................................................................................36
A Appendix - Accessories ...........................................................................................................................................................41
B Appendix - Electrical panel layout...........................................................................................................................................42

3 20166451
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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: Light oil burners
Model and type: RL 190/M 674 T1
These products are in compliance with the following Technical Standards:
EN 267
EN 12100
and according to the European Directives:
MD 2006/42/CE Machine Directive
LVD 2014/35/EU Low Voltage Directive
EMC 2014/30/EU Electromagnetic Compatibility
The quality is guaranteed by a quality and management system certified in accordance with ISO 9001:2015.
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
Light oil burner 674 T1 RL 190/M 534 - 2431 kW
Legnago, 21.04.2018 General Manager
RIELLO S.p.A. - Burners Department
Research and Development Director
RIELLO S.p.A. - Burners Department
Eng. U. Ferretti Eng. F. Comencini

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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
Centre 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
carried out correctly, cause serious injury, death
or long-term health risks.
ATTENTION
This symbol indicates operations which, if not
carried out correctly, may cause serious injury,
death or long-term health risks.
CAUTION
This symbol indicates operations which, if not
carried out correctly, may cause damage to the
machine and/or injury to people.
DANGER
DANGER: LIVE COMPONENTS
This symbol indicates operations which, if not
carried out correctly, lead to electric shocks with
lethal 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
atmosphere may be present. An explosive
atmosphere 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.

5 20166451
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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 Assistance
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 recommends
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,
incorrectly 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
established 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
responsibility for the failure to observe the contents of this
manual.
.........................................................................................
.........................................................................................
.........................................................................................
.........................................................................................
ATTENTION
Failure to observe the information given in this
manual, operating negligence, incorrect
installation and carrying out of non authorised
modifications will result in the annulment by the
manufacturer of the guarantee that it supplies with
the burner.

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Safety and prevention
3.1 Introduction
The burners have been designed and built in compliance with
current regulations and directives, applying the known technical
safety rules 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
confidence 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
dangerous.
Specifically:
it can be applied to boilers operating with water, steam,
diathermic oil, and to other uses expressly named by the
manufacturer; the type and pressure of the fuel, the voltage and
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 chamber and the ambient temperature must all be
within the values indicated in the instruction manual.
Modification of the burner to alter its performance and
destinations is not allowed.
The burner must be used in exemplary technical safety
conditions. 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
responsible for the machine and for the training of the people
working 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, the user undertakes to ensure that everyone
knows the use and safety instructions for his own duties;
Personnel must observe all the danger and caution
indications shown on the machine.
Personnel must not carry out, on their own initiative,
operations 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
compromise 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
ATTENTION
The manufacturer guarantees safety and proper
operation only if all burner components are intact
and correctly positioned.
must take all the measures necessary to
prevent unauthorised people gaining access
to the machine;
the user must inform the manufacturer if
faults or malfunctioning of the accident
prevention systems are noticed, along with
any presumed danger situation;
personnel must always use the personal
protective equipment envisaged by legislation
and follow the indications given in this
manual.

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Technical description of the burner
4.1 Burner designation
4.2 Models available
4 Technical description of the burner
Designation Electrical power supply Start-up Code
RL 190/M 3/230/50 Direct 20166488
RL 190/M 3/400/50 Direct 20166490
RL 190/M 3/400/50 Direct 20169231
Series: R
Size
Fuel: Natural gas
Light oil
Light oil / Methane
Adjustment:
Electrical supply of the system:
3/400/50
3/230/50
Voltage of auxiliaries:
230/50/60
110/50/60
R L 190 TC
Emission: C01 or... Class 1 EN267
C02 or MZ Class 2 EN267
C03 or BLU Class 3 EN267
3/230/50 230/50
BASIC DESIGNATION
EXTENDED DESIGNATION
3N / 400V / 50Hz
3 / 230V / 50Hz
230V / 50-60Hz
110V / 50-60Hz
Heavy oil
E Electronic cam
EV Electronic cam and 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 head
TL Extended head
Flame control system:
FS1
FS2
Standard (1 stop every 24 h)
Continuous operation only with the use of a flame detection
electrode (ionisation)
MFS1

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Technical description of the burner
4.3 Technical data
Tab. A
(1) Reference conditions: Ambient temperature 20°C - Fuel temperature 15°C - Barometric pressure 1013 mbar - Altitude 0 m a.s.l.
(2) Sound pressure measured in manufacturer's combustion laboratory, with burner operating on test boiler and at maximum output.
The sound power is measured using the "Free Field" method, required by the EN 15036 standard, and according to an “Accuracy: Category 3”
measurement, as described in EN ISO 3746.
4.4 Electrical data
Tab. B
4.4.1 Weight - approximate measurements
The weight of the burner complete with its packaging is shown in
the table (Tab. C).
Tab. C
Model RL 190/M
Type 674 T1
Output (1)
Max.
kW
Mcal/h
kg/h
1423 - 2431
1224 - 2091
120 - 205
Min.
kW
Mcal/h
kg/h
534 - 1423
459 - 1224
45 - 120
Fuel Light oil
- Net calorific value kWh/kg
Mcal/kg
11.86
10,2 (10.200 kcal/kg)
- Density kg/cu.dm 0.82 - 0.85
- viscosity at 20 °C mm sq/s max 6 (1,5 °E - 6 cSt)
Operation • Intermittent (min. 1 stop every 24 hours).
• Progressive two-stage (modulating by kit).
Nozzle number 1 (nozzle with return line)
Standard applications Boilers: water, steam, diathermic oil
Ambient temperature °C 0 - 40
Combustion air temperature °C max 60
Pump:
output (at 20 bar)
pressure range
fuel temperature
kg/h
bar
°C max
665
7 - 40
140
Protection level IP 44
Noise level (2) Sound pressure
Sound power dBA 83.9 94.9
Code 20166488 20166490
20169231
Electrical power supply V
Hz
230 ~ +/-10%
50 - three-phase
400 ~ +/-10%
50 - three-phase
Electrical motor IE3 rpm
W
V
A
2895
4500
230
15/93
2895
4500
400
8.7/54
Ignition transformer V1 - V2
I1 - I2
230 V - 2 x 5 kV
1.9 A - 35 mA
Absorbed electrical power W max 5500
Model kg
RL 190/M 124

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Technical description of the burner
4.5 Overall dimensions
The dimensions of the burner are given in Fig. 1.
Bear in mind that inspection of the combustion head requires the
burner to be opened and the rear part drawn back on the slide
bars.
The maximum dimensions of the open burner are indicated by
the value I.
Tab. D
4.6 Standard equipment
The burner is supplied complete with:
Flexible hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 2
Seal for flexible hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 2
Nipples for flexible hoses . . . . . . . . . . . . . . . . . . . . . . . . . . No. 2
Thermal flange gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
M16 x 40 screws to secure the burner
flange to the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
Extensions for slide bars . . . . . . . . . . . . . . . . . . . . . . . . . . No. 2
Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Fig. 1
D1217
mm ABCDE F GH I
RL 190/M 813 366 447 555 712 370 - 528 222 430 1166-1285

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Technical description of the burner
4.7 Firing rates
During operation, burner output varies between:
a MINIMUM OUTPUT: area A;
a MAXIMUM OUTPUT: area B.
The work point is found by drawing a vertical line from the
required output and an horizontal line from the corresponding
pressure in the combustion chamber.
The intersection of these two lines is the work point which must
lie within area A for the MINIMUM output and area B for the
MAXIMUM output.
The burner may have to operate at a higher altitude and/or with
combustion air at a higher temperature.
Both air heating and increased altitude cause air volume
expansion, i.e. air density is reduced.
Burner fan flow rate remains basically the same but oxygen
content per cu. m of air is reduced as well as the fan thrust (head).
Therefore, it is important to know whether burner required
maximum output at a certain pressure in the combustion
chamber remains within the burner firing rate also under different
temperature and altitude conditions.
ATTENTION
The FIRING RATE was obtained with an ambient
temperature of 20°C and a barometric pressure of
1013 mbar (approx. 0m above sea level), with the
combustion head adjusted as shown on page 20.
Fig. 2
mbar
D1975
A B
Burner output
Pressure in combustion chamber

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Technical description of the burner
4.8 Test boiler
The burner/boiler combination does not pose any problems if the
boiler is EC approved and its combustion chamber dimensions
are similar to those indicated in the diagram (Fig. 3).
If the burner must be combined with a boiler that has not been EC
approved and/or its combustion chamber dimensions are clearly
smaller than those indicated in the diagram, consult the
manufacturer.
The firing rates were obtained in special test boilers, according to
EN 267 standard.
In Fig. 3 you can see the diameter and length of the test
combustion chamber.
Example:
Output 200 kg/h: diameter 80 cm - length 3.5 m.
MODULATING RATIO
The modulating ratio, obtained in test boilers in accordance with
the norm (EN 267 for light oil) is 2:1.
4.9 Commercial boilers
4.9.1 Smoke ducts
Some norms provide indications for the correct installation of the
smoke ducts, which connect the boiler to the flue pipe or the
chimney.
At any rate we suggest following these indications:
The smoke ducts must always have only an updraught;
Changes in direction are allowed only by using curved
elements;
the angle formed between the axis of the terminal entrance
section and the axis of the flue pipe or the chimney must be
greater than 45°.
Fig. 3
Combustion chamber
m
D688
ATTENTION
Burners RL 190/M have been designed only for
combustion chambers with minimum dimensions
in compliance with standard EN 304, with flue
gases coming out from the bottom, for example
three flue passes (not flue gas inversion boilers),
accessible through the door.
Maximum thickness of the boiler's front panel: 250
mm, see Fig. 4.
Fig. 4
D1276

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Technical description of the burner
4.10 Burner description
1 Ignition electrodes
2 Combustion head
3 Screw for combustion head adjustment
4 Screw for fixing fan to flange
5 Oil pressure switch
6 Nozzle return pressure gauge
7 Nozzle delivery pressure gauge
8Pump
9 Nozzle holder
10 Air dampers
11 Safety solenoid valves
12 Fan pressure test point
13 Boiler fixing flange
14 Flame stability disc
15 Slide bars for opening the burner and inspecting the
combustion head
16 Extensions for slide bars 15)
17 Electrical motor
18 Electrical control box with lockout pilot light and reset button
19 Flame inspection window
20 Valve unit with nozzle return line pressure variator
21 Servomotor, controls the fuel flow rate variator and the air
damper.
When the burner is not operating the air damper is fully
closed in order to reduce heat dispersion from the boiler due
to the flue draught, which draws air from the fan suction
inlet.
Two types of burner lockout may occur:
Control box lockout: if the control box 18)(Fig. 5) push-button
lights up, it indicates that the burner is in lockout.
Press the push-button to reset.
Motor lockout: release by pressing the button on thermal relay.
12
17
18 19 20
16 15 21
14
13 9
11
10
8
1
2
3
4
5
6
7
Fig. 5
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Technical description of the burner
4.11 Electrical panel description
1 Ignition transformer
2 Power switch for:
automatic - manual - off operation
Button for:
power increase - power reduction
3 Motor contactor and thermal relay with reset button
4 Terminal board for electric connection
5 Cable grommets for external connections (to be carried out
by the installer)
6 Control box base
7 Flame sensor
8 Oil valve coils
23 1 7
6
8
5
4
Fig. 6
20169284

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Technical description of the burner
4.12 Control box RFGO-A23
Important notes
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
operations, 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
functions. 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
instructions:
– avoid conditions that can favour the development of
condensate 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 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.
If used with the flame detection electrode the system can operate
continuously whereas, with the use of UV sensors it operates
intermittently with stop and restart request at least once every 24h.
Installation notes
• Make sure that the electrical wiring inside the boiler complies
with national and local safety regulations.
• Do not confuse the powered conductors with the neutral
ones.
• Ensure that spliced wires cannot get into contact with
neighbouring terminals. Use adequate ferrules.
• Arrange the H.V. ignition cables separately, as far as
possible from the control box and the other cables.
• When wiring the unit, make sure that AC 230 V mains voltage
cables are run strictly separate from extra low-voltage cables
to avoid risks of electrical shock hazard.
Technical data
Tab. E
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 capacitive reactance of the line reduces the size of the
flame signal.
– Use a separate cable.
• Respect the allowed cable lengths.
• The ionisation probe is not protected against the risk of
electrocution. When connected to the electricity supply, the
ionisation probe must be protected against any accidental
contact.
• Position the ignition electrode and the ionisation probe so
that the ignition spark cannot form an arc on the probe (risk
of electric overcharge).
ATTENTION
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. The
Manufacturer cannot assume any responsibility
for damage resulting from unauthorised work!
Mains voltage AC 230 V -15 % / +10 %
Mains frequency 50 / 60 Hz
Primary fuse (external) Refer to the electric
system
Weight approx. 1.1 kg
Power absorption approx. AC 7 VA
Protection level IP40
Safety class II
Environmental conditions
Operation
Climatic conditions
Mechanical conditions
Temperature range
Humidity
DIN EN 60721-3-1
Class 1K2
Class 1M2
-50...+85°C
< 90% RH (non-condensing)
Fig. 7
20152163

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Technical description of the burner
4.13 Servomotor (SQN31...)
Important notes
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
terminals in a suitable manner and correctly fix the cover.
Check the wiring is in order.
Falls and collisions can negatively affect the safety
functions. In this case, the servomotor must not be operated,
even if it displays no evident damage.
Assembly notes
• Check the relevant national safety standards are respected.
• When assembling the servomotor and connecting the
damper, the gears can be disengaged by means of a lever,
allowing the drive shaft to be easily adjusted in both
directions of rotation.
Technical data
Tab. F
ATTENTION
To avoid accidents, material or environmental
damage, observe the following instructions!
Avoid opening, modifying or forcing the
actuators.
Operating voltage AC 220...240 V - 15% / +10%
AC 100...110 V - 15% / +10%
Mains frequency 50...60 Hz 6%
Switching capacity of
auxiliary devices and
limit switches
10 (3) A, AC 24...250 V
Angle
positioning
up to 160° (full scale)
Assembly position option
Protection level IP 54, DIN 40050
Safety class I
Weight approx. 0.8 kg
Actuator motor synchronous motor
Power absorption 6.5 VA
Environmental conditions:
Operation
Climatic conditions
Mechanical conditions
Temperature range
Humidity
DIN EN 60 721-3-1
Class 1K2
Class 1M2
-20...+60°C
< 95% RH
Fig. 8
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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 Handling
The burner packaging includes a wooden platform, it is therefore
possible to handle the burner (still packaged) with a pallet truck
or fork lift truck.
5.3 Preliminary checks
Checking the consignment
Check the identification label of the burner, showing:
the model (see Ain Fig. 9) and the type of burner (B);
the year of manufacture, in cryptographic form (C);
the serial number (D);
the absorbed electrical power (E);
the types of fuel used and the relative supply pressures (F);
the minimum and maximum possible output data of the
burner (G) (see Firing rate).
5Installation
DANGER
All the installation, maintenance and disassembly
operations must be carried out with the electricity
supply disconnected.
ATTENTION
The installation of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and
regulations of the laws in force.
DANGER
The combustion air inside the boiler must be free
from hazardous mixes (e.g.: chloride, fluoride,
halogen); if present, it is highly recommended to
carry out cleaning and maintenance more
frequently.
ATTENTION
Burner handling operations can be highly
dangerous if not carried out with the greatest
attention: distance unauthorised personnel, check
integrity and suitability of the means available.
Check also that the area in which you are working
is empty and that there is an adequate escape
area (i.e. a free, safe area to which you can
quickly move if the burner should fall).
During handling, keep the load at no more than
20-25 cm from the ground.
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
burner will be installed.
CAUTION
After removing all the packaging, check the
integrity of the contents. In the event of doubt, do
not use the burner; contact the supplier.
The packaging elements (wooden cage or
cardboard box, nails, 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 appropriate
places.
ATTENTION
A burner label that has been tampered with,
removed or is missing, along with anything else
that prevents the definite identification of the
burner makes any installation or maintenance
work difficult.
RIELLO S.p.A.
Ií37045 Legnago (VR)
A
BC
DE
G
F
Fig. 9
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17 20166451
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Installation
5.4 Operating position
5.5 Boiler plate
Pierce the closing plate of the combustion chamber, as in Fig. 11.
The position of the threaded holes can be marked using the
thermal insulation screen supplied with the burner.
Tab. G
5.6 Blast tube length
The length of the blast tube must be selected according to the
indications provided by the manufacturer of the boiler, and in any
case it must be greater than the thickness of the boiler door
complete with its fettling. The available length L (mm) is 370 mm.
For boilers with front flue passes 12)(Fig. 12), or flame inversion
chamber, a protection in refractory material 10) must be inserted
between the boiler fettling 11) and the blast tube 9)(Fig. 12).
This protection must not compromise the extraction of the blast
tube.
For boilers with a water-cooled front piece, a refractory lining 10)-
11)(Fig. 12) is not necessary, unless expressly requested by the
boiler manufacturer.
ATTENTION
The burner is set up to operate only in
positions 1, 2, 3 and 4 (Fig. 10).
Installation 1is preferable, as it is the only
one that allows the maintenance operations
as described in this manual.
Installations 2, 3 and 4permit operation but
make maintenance and inspection of the
combustion head more difficult.
DANGER
Any other position could compromise the
correct operation of the appliance.
The installation 5is prohibited for safety
reasons.
Fig. 10
2 3 4 51
D7739
mm A B C
RL 190/M 230 325-368 M 16
D455
Fig. 11

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Installation
5.7 Securing the burner to the boiler
Remove blast tube 9)(Fig. 12) from the burner 6)(Fig. 12):
loosen the 4 screws 3) and remove the cover 1);
remove screws 2) from the two slide bars 5);
remove the 2 screws 4) retaining the burner 6) to the flange
7).
remove the blast tube 9) complete with flange 7) and slide
bars 5).
Fix the flange 7)(Fig. 12) to the plate of the boiler interposing the
seal 8)(Fig. 12) supplied with the unit.
Use the 4 screws, also supplied, after protecting their thread with
an anti-locking product.
5.8 Electrode positions
Provide an adequate lifting system.
Be careful as some drops of fuel may leak out
during this phase.
ATTENTION
The seal between burner and boiler must be
airtight.
Fig. 12
D1976
ATTENTION
Check that the electrodes are positioned
correctly, as in Fig. 13, complying with the
dimensions indicated.
Fig. 13
D856