Riello RL 70/M Quick start guide

20166443 (1) - 07/2019
Installation, use and maintenance instructions
Light oil burners
Progressive two-stage or modulating operation
CODE MODEL TYPE
20166463 RL 70/M 669 T1
20166476 RL 70/M 669 T1
20166481 RL 100/M 670 T1
20166484 RL 100/M 670 T1
20166486 RL 130/M 671 T1
20166487 RL 130/M 671 T1
GB

Translation of the original instructions

1 20166443
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Contents
1 Declarations................................................................................................................................................................................ 2
2 Information and general warnings............................................................................................................................................ 3
2.1 Information about the instruction manual ......................................................................................................................................................3
2.2 Guarantee and responsibility ........................................................................................................................................................................4
3 Safety and prevention................................................................................................................................................................ 5
3.1 Introduction ...................................................................................................................................................................................................5
3.2 Personnel training .........................................................................................................................................................................................5
4 Technical description of the burner ......................................................................................................................................... 6
4.1 Burner designation ........................................................................................................................................................................................6
4.2 Models available ...........................................................................................................................................................................................6
5 Technical description of the burner ......................................................................................................................................... 7
5.1 Technical data...............................................................................................................................................................................................7
5.2 Electrical data................................................................................................................................................................................................7
5.3 Maximum dimensions ...................................................................................................................................................................................8
5.4 Standard equipment......................................................................................................................................................................................8
5.5 Firing rates ....................................................................................................................................................................................................9
5.6 Test boiler .....................................................................................................................................................................................................9
5.7 Burner description .......................................................................................................................................................................................10
5.8 Electrical panel description .........................................................................................................................................................................11
5.9 Control box RFGO-A22...............................................................................................................................................................................12
5.10 Servomotor (SQN31...) ...............................................................................................................................................................................13
6 Installation ................................................................................................................................................................................ 14
6.1 Notes on safety for the installation ..............................................................................................................................................................14
6.2 Handling ......................................................................................................................................................................................................14
6.3 Preliminary checks ......................................................................................................................................................................................14
6.4 Operating position .......................................................................................................................................................................................15
6.5 Boiler plate ..................................................................................................................................................................................................15
6.6 Blast tube length .........................................................................................................................................................................................15
6.7 Securing the burner to the boiler.................................................................................................................................................................16
6.8 Electrode positions......................................................................................................................................................................................16
6.9 Nozzle installation .......................................................................................................................................................................................17
6.10 Nozzle assembly .........................................................................................................................................................................................17
6.11 Combustion head setting ............................................................................................................................................................................18
6.12 Light oil supply ............................................................................................................................................................................................19
6.13 Pump...........................................................................................................................................................................................................21
6.14 Electrical connections .................................................................................................................................................................................22
6.15 Calibration of the thermal relay ...................................................................................................................................................................23
6.16 Motor rotation ..............................................................................................................................................................................................23
7 Start-up, calibration and operation of the burner ................................................................................................................. 24
7.1 Notes on safety for the first start-up ............................................................................................................................................................24
7.2 Burner firing.................................................................................................................................................................................................24
7.3 Operation ....................................................................................................................................................................................................24
7.4 Pressure switch adjustment ........................................................................................................................................................................27
7.5 Operation sequence of the burner ..............................................................................................................................................................28
7.6 Final checks ................................................................................................................................................................................................28
8 Maintenance.............................................................................................................................................................................. 29
8.1 Notes on safety for the maintenance ..........................................................................................................................................................29
8.2 Maintenance programme ............................................................................................................................................................................29
8.3 Opening the burner .....................................................................................................................................................................................31
8.4 Closing the burner.......................................................................................................................................................................................31
9 LED indicator and special function ........................................................................................................................................ 32
9.1 Description of LED lamps............................................................................................................................................................................32
9.2 Check mode function ..................................................................................................................................................................................32
9.3 Flame control lock-out or emergency stop condition...................................................................................................................................32
9.4 LED lamps: burner operating status............................................................................................................................................................33
10 Problems - Causes - Remedies signalled by LED indicators............................................................................................... 34

20166443 2
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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 70/M
RL 100/M
RL 130/M
669 T1
670 T1
671 T1
These products are in compliance with the following Technical Standards:
EN 267
EN 12100
and according to the European Directives:
MD 2006/42/EC 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 release 26.01.2010”.
Product Type Model Power
Light oil burner 669 T1 RL 70/M 261-1043 kW
670 T1 RL 100/M 332-1482 kW
671 T1 RL 130/M 498-1779 kW
Legnago, 01.12.2015 Executive General Manager
RIELLO S.p.A. - Burner Department
Research & Development Director
RIELLO S.p.A. - Burner Department
Mr. U. Ferretti Mr. F. Comencini

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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.
WARNING
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.

20166443 4
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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.
.........................................................................................
.........................................................................................
.........................................................................................
.........................................................................................
WARNING
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.

5 20166443
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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 safety
technical 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
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
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 Voltage Start-up Code
RL 70/M TC FS1 3/230-400/50 Direct 20166463
RL 70/M TL FS1 3/230-400/50 Direct 20166476
RL 100/M TC FS1 3/230-400/50 Direct 20166481
RL 100/M TL FS1 3/230-400/50 Direct 20166484
RL 130/M TC FS1 3/230-400/50 Direct 20166486
RL 130/M TL FS1 3/230-400/50 Direct 20166487
Series: R
Size
Fuel: Natural gas
Light oil
Gas oil / Methane
Adjustment:
Electrical supply of the system:
3/400/50
3/230/50
Voltage of auxiliaries:
230/50/60
110/50/60
Emission: C01 or... Class 1 EN267
C02 or MZ Class 2 EN267
C03 or BLU Class 3 EN267
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 using the flame
detection electrode (ionisation)
R L 70 TC 3/230/50 230/50MFS1

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Technical description of the burner
5.1 Technical data
Tab. A
(1) Reference conditions: Ambient temperature 20°C - Barometric pressure 1000 mbar - Altitude 100 m a.s.l.
(2) Sound pressure measured in manufacturer's combustion laboratory, with burner operating on test boiler and at maximum rated
output. The sound power is measured with the “Free Field” method, as per EN 15036, and according to an “Accuracy: Category 3”
measuring accuracy, as set out in EN ISO 3746.
5.2 Electrical data
Tab. B
5.2.1 Weight - approximate measurements
The weight of the burner complete with its packaging is shown in
table (Tab. C)
Tab. C
5 Technical description of the burner
MODEL RL 70/M RL 100/M RL 130/M
Type 669 T1 670 T1 671 T1
Output (1) MAX. kW
Mcal/h
kg/h
474 - 1043
408 - 897
40 - 88
711 - 1482
612 - 1275
60 - 125
948 - 1779
816 - 1530
80 - 150
MIN. kW
Mcal/h
kg/h
261 - 474
224 - 408
22 - 40
332 - 711
286 - 612
28 - 60
498 - 948
428 - 816
42 - 80
Fuel Light oil
- net calorific value kWh/kg
Mcal/kg
11.8
10.2 (10.200 kcal/kg)
- density kg/dm3 0.82 - 0.85
- viscosity at 20 °C mm2/s max 6 (1.5 °E - 6 cSt)
Operation • Intermittent (min. 1 stop in 24 hours)
• Progressive two-stage (modulating by Kit)
Nozzle number 1 (nozzle with return)
Standard applications Boilers: water, steam, diathermic oil
Ambient temperature °C 0 - 40
Combustion air temperature °C max 60
Pump delivery (at 20 bar)
pressure range
fuel temperature
kg/h
bar
°C max
190
10 - 21
90
Electrical protection IP 44
Noise levels (2)
Sound pressure dBA 75 77 78.5
Sound power 86 88 89.5
MODEL RL 70/M RL 100/M RL 130/M
ELECTRICAL SUPPLY V
Hz
230 - 400 ~ +/-10%
50 - three-phase
ELECTRIC MOTOR rpm
kW
V
A
2880
1.1
230/400
4.3/2.5
2910
1.8
230/400
6.9/4
2890
2.2
230/400
8/4.6
IGNITION TRANSFORMER V1 - V2
I1 - I2
230 V - 2 x 5 kV
1.9 A - 30 mA
ELECTRICAL POWER CONSUMPTION kW max 1.7 2.5 2.85
Model kg
RL 70/M 65
RL 100/M 68
RL 130/M 76

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Technical description of the burner
5.3 Maximum dimensions
The maximum 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 withdrawn on the slide
bars.
The dimensions of the open burner are indicated by position I.
(1) Blast tube: short-long
Tab. D
5.4 Standard equipment
Fig. 1
D1217
mm ABCDE
F (1) GH I (1)
RL 70/M 663 296 367 555 680 272 - 385 179 430 951 - 1086
RL 100/M 690 312 367 555 680 272 - 385 179 430 951 - 1086
RL 130/M 705 338 367 555 680 272 - 385 189 430 951 - 1086
Flexible hoses No. 2
Gaskets for flexible hoses No. 2
Nipples for flexible hoses No. 2
Thermal insulation screen No. 1
Extensions 17) for slide bars 14) (for models with
385 mm blast tube) No. 4
Screws to secure the burner flange to the boiler:
M 12 x 35 No. 4
Manual No. 1
Spare part list No. 1

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Technical description of the burner
5.5 Firing rates
During operation, burner output varies between:
MINIMUM OUTPUT: area A;
MAXIMUM OUTPUT: area B (and C for model RL 130/M).
Graphs (Fig. 2):
Horizontal axis : Burner output
Vertical axis : Combustion chamber pressure
The work point may be found by plotting a vertical line from the
desired delivery and a horizontal line from the pressure in the
combustion chamber. The intersection of these two lines is the
work point which must lie within area A, for MIN output, and within
area B, for MAX output.
In order to utilize also area C (RL 130/M) it is necessary to per-
form the calibration of the combustion head as explained on
page 16.
5.6 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 676 regulations.
In Fig. 3 you can see the diameter and length of the test
combustion chamber.
Example:
Output 650 Mcal/h (407 kW): diameter 60 cm - length 2 m.
MODULATING RATIO
The modulating ratio, obtained in test boilers, according to
standard (EN 267 for light oil), is of 4:1 for light oil.
WARNING
The FIRING RATE area values have been ob-
tained considering a surrounding temperature of
20 °C, and an atmospheric pressure of 1000 mbar
(approx. 100 m above sea level) and with the
combustion head adjusted as shown on page 18.
mbar mbar mbar
D1218
Fig. 2
Fig. 3
Combustion chamber
m
D497

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Technical description of the burner
5.7 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 Pressure gauge for pressure on nozzle return
7Pump
8 Nozzle holder
9 Air gate valve
10 Fan pressure test point
11 Boiler mounting flange
12 Flame stability disk
13 Servomotor, provides adjustment of fuel delivery regulator
and of air gate valve.
When the burner is not operating the air gate valve is fully
closed in order to reduce to a minimum heat dispersion from
the boiler due to the flue draught which draws air from the
fan suction inlet.
14 Slide bars for opening the burner and inspecting the com-
bustion head
15 Electrical motor
16 Extensions for slide bars 14)
17 Control box
18 Flame inspection window
19 Valve assembly with pressure regulator on nozzle return
Two types of burner failure may occur:
Control Box Lock-out: if the control box 17) push-button lights up,
it indicates that the burner is in lock-out.
To reset, press the push-button of the thermal relay 3)(Fig. 5 on
page 11).
7
9
11 812
1
2
3
4
5
6
17
18
19
13
14
15
16
10
Fig. 4
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Technical description of the burner
5.8 Electrical panel description
1 Ignition transformer
2 A switch for:
automatic-manual-OFF operation
A button for:
increase - decrease output
3 Motor contactor and thermal relay with reset button
4 Terminal board for electrical connection
5 Cable-grommets for external connections to be carried out
by the installer
6 Control box base
7 Flame sensor
8 Coil for oil valves
Fig. 5
23 1 7
6
8
5
4
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Technical description of the burner
5.9 Control box RFGO-A22
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).
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. 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. 6
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Technical description of the burner
5.10 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
WARNING
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. 7
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Installation
6.1 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.
6.2 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.
6.3 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
possibilities (H)(see Firing rate)
Warning. The burner output must be within the boiler's firing
rate.
the category of the appliance/countries of destination (I).
light oil maximum viscosity (L).
6Installation
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
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.
WARNING
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).
When handling, keep the load at not more than
20-25cm 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.
WARNING
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.
Fig. 8
RIELLO S.p.A.
Ií37045 Legnago (VR)
A
BC
DE
G
F
S9762

15 20166443
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Installation
6.4 Operating position
6.5 Boiler plate
Drill the combustion chamber locking plate as shown in (Fig. 10).
The position of the threaded holes can be marked using the ther-
mal screen supplied with the burner.
Tab. G
6.6 Blast tube length
The length of the blast tube must be selected according to the in-
dications provided by the manufacturer of the boiler, and in any
case it must be greater than the thickness of the boiler door com-
plete with its fettling. The range of lengths available, L (mm), is as
follows:
Tab. H
For boilers with front flue passes 12) or flame inversion cham-
bers, protective fettling in refractory material 10) must be inserted
between the boiler fettling 11) and the blast tube 9).
This protective fettling must not compromise the extraction of the
blast tube.
For boilers having a water-cooled front the refractory fettling 10)-
11)(Fig. 11) is not required unless it is expressly requested by the
boiler manufacturer.
WARNING
The burner is set up to operate only in
positions 1, 2, 3 and 4 (Fig. 9).
Installation 1 is preferable, as it is the only
one that allows the maintenance operations
as described in this manual.
Installations 2, 3 and 4 permit operation but
make maintenance and inspection of the
combustion head more difficult.
DANGER
Any other position could compromise the
correct operation of the appliance.
Installation 5 are forbidden for safety
reasons.
Fig. 9
2 3 4 51
D7739
D455 Fig. 10
mm A B C
RL 70/M 185 275-325 M 12
RL 100/M 185 275-325 M 12
RL 130/M 195 275-325 M 12
Boccaglio 9) RL 70/M RL 100/M RL 130/M
Corto 272 272 272
Lungo 385 385 385
D1219
Fig. 11

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Installation
6.7 Securing the burner to the boiler
Disassemble the blast tube 9) from the burner 6) by proceeding
as follows:
– loosen the four screws 3) and remove the cover 1);
– remove the screws 2) from the two slide bars 5);
– remove the two screws 4) fixing the burner 6) to the flange 7);
– withdraw the blast tube 9) complete with flange 7) and slide
bars 5).
6.7.1 Combustion head calibration
At this point check, for model RL 130/M, whether the maximum
delivery of the burner in 2nd stage operation is contained in area
B or in area C of the firing rate. See page 9.
If it is in area B then no operation is required.
If, on the other hand, it is in area C:
– unscrew the screws 1)(Fig. 12) and disassemble the blast
tube 5);
– unscrew the screws 3) and remove the shutter 4);
– tighten the screws 3) on the rod 2);
– now refit the blast tube 5) and the screws 1).
Once this operation has been carried out (if it was required), se-
cure flange 7)(Fig. 11) to the boiler plate interposing the supplied
gasket 8). Use the 4 screws provided after having protected the
thread with antiscruffing products.
6.8 Electrode positions
Provide an adequate lifting system.
Be careful as some drops of fuel may leak out
during this phase.
WARNING
The seal between burner and boiler must be
airtight.
D690
Fig. 12
WARNING
Check that the electrodes are positioned
correctly, as in Fig. 13, complying with the
dimensions indicated.
Fig. 13
D856

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Installation
6.9 Nozzle installation
The burner complies with the emission requirements of the EN
267 standard. In order to guarantee that emissions do not vary,
recommended and/or alternative nozzles specified by Riello in
the Instruction and warning booklet should be used.
6.9.1 Choice of nozzle
See diagram (Fig. 28 on page 24).
In case an intermediate delivery between the two values indicat-
ed in the diagram (Fig. 28 on page 24), is required, a nozzle with
higher delivery must be chosen. Delivery reduction will be ob-
tained by means of the pressure regulator.
RECOMMENDED NOZZLES:
Type A3 or A4 Bergonzo nozzles - 45° angle
6.10 Nozzle assembly
At this stage of installation the burner is still disassembled from
the blast tube; it is therefore possible to fit the nozzle with the box
spanner 1)(Fig. 15), fitting the spanner through the central hole in
the flame stability disk. Do not use any sealing products such as
gaskets, sealing compound, or tape. Be careful to avoid damag-
ing the nozzle sealing seat.
Finally refit the burner 3)(Fig. 16) to the slide bars 2) and slide it
up to the flange 5), keeping it slightly raised to prevent the
flame stability disk from pressing against the blast tube.
Tighten the screws 1) on the slide bars 2) and screws 4) fixing the
burner to the flange.
If it proves necessary to change a nozzle with the burner already
fitted to the boiler, proceed as outlined below:
– Retract the burner on its slide bars as shown in (Fig. 6 on
page 12).
– Remove the nuts 1)(Fig. 11 on page 15) and the disk 2).
– Use spanner 3)(Fig. 11 on page 15) to change the nozzles.
WARNING
It is advisable to replace the nozzle once a year
during periodical maintenance.
CAUTION
The use of nozzles other than those specified by
Riello S.p.A. and inadequate regular maintenance
may result into emission limits non-conforming to
the values set forth by the regulations in force, and
in extremely serious cases, into potential hazards
to people and objects.
The manufacturing Company shall not be liable
for any such damage arising from non-
observance of the requirements contained in this
manual.
WARNING
Do not use any sealing products such as:
gaskets, tape or sealants.
Be careful to avoid damaging the nozzle
sealing seat.
The nozzle must be screwed into place tightly
but not to the maximum torque value
provided by the wrench.
Fig. 14
20119192
Fig. 15
20119193
3
5
4
2
1
Fig. 16
20169278

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Installation
6.11 Combustion head setting
The setting of the combustion head depends exclusively on the
maximum burner delivery at which it will be operating.
Turn screw 4)(Fig. 17) until the notch shown in diagram (Fig. 18)
is level with the front surface of flange 5)(Fig. 17).
Example:
RL 70/M, maximum light oil delivery = 50 kg/h
Diagram (Fig. 18) indicates that for a delivery of 50 kg/h the RL
70/M Model requires the combustion head to be set to approx.
three notches, as shown in Fig. 17.
D462
Fig. 17
Notches no.
Maximum light oil delivery kg/h
Fig. 18
D1223