Riello RL 70 Quick start guide

2916069 (6) - 09/2012
Installation, use and maintenance instructions
Instrucciones de instalación, uso y mantenimiento
Instruções para a instalação, uso e manutenção
Light oil burners
Quemadores de gasóleo
Queimadores de gasóleo
Two-stage operation
Funcionamiento a dos llamas
Funcionamento a duas chamas
CODE - CÓDIGO MODEL - MODELO TYPE - TIPO
3475030 - 3475032 RL 70 660 T1
3475031 - 3475033 RL 70 660 T1
3475230 - 3475232 RL 100 661 T1
3475231 - 3475233 RL 100 661 T1
3475430 - 3475432 RL 130 662 T1
3475431 - 3475433 RL 130 662 T1
GB
E
P

1 6069
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Contents
1 Declarations................................................................................................................................................................................ 2
2 Information and general instructions....................................................................................................................................... 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 Technical data...............................................................................................................................................................................................6
4.2 Electrical data................................................................................................................................................................................................6
4.3 Burner description (Fig. 1).............................................................................................................................................................................8
4.4 Firing rates (Fig. 3)......................................................................................................................................................................................10
5 Installation ................................................................................................................................................................................ 11
5.1 Handling ......................................................................................................................................................................................................11
5.2 Preliminary checks ......................................................................................................................................................................................11
5.3 Boiler plate (Fig. 6)......................................................................................................................................................................................12
5.4 Blast tube length (Fig. 7) .............................................................................................................................................................................12
5.5 Securing the burner to the boiler (Fig. 8) ....................................................................................................................................................12
5.6 Choice of nozzles for 1st and 2nd stage .....................................................................................................................................................13
5.7 Nozzle assembly .........................................................................................................................................................................................14
5.8 Combustion head setting ............................................................................................................................................................................15
6 Electrical system...................................................................................................................................................................... 16
6.1 Electrical system (factory set) .....................................................................................................................................................................17
7 Hydraulic system...................................................................................................................................................................... 19
7.1 Fuel supply..................................................................................................................................................................................................19
7.2 Hydraulic connections (Fig. 20)...................................................................................................................................................................20
7.3 Pump (Fig. 21) ............................................................................................................................................................................................20
8 Burner calibration .................................................................................................................................................................... 21
8.1 Firing ...........................................................................................................................................................................................................21
8.2 Operation ....................................................................................................................................................................................................21
9 Maintenance.............................................................................................................................................................................. 24
9.1 Burner start-up cycle diagnostics ................................................................................................................................................................26
9.2 Resetting the control box and using diagnostics.........................................................................................................................................26
9.3 Resetting the control box ............................................................................................................................................................................26
9.4 Visual diagnostics .......................................................................................................................................................................................26
9.5 Software diagnostics ...................................................................................................................................................................................27

6069 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: RL 70 - 100 - 130
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 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. BImSchV
revision 26.01.2010”.
Product Type Model Output
Light oil burners 661T1 RL 100 356 - 1186 kW
662T1 RL 130 486 - 1540 kW
Legnago, 10.09.2012
Burners Division Department
RIELLO S.p.A.
Mr Ivan Zinna Eng. R. Cattaneo
CE-0440/B

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Information and general instructions
2.1 Information about the instruction manual
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 Assist-
ance Service 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.
2.1.1 General dangers
The dangers can be of 3 levels, as indicated below.
2.1.2 Danger: live components
Other symbols
This symbol indicates a list.
Abbreviations used
Ch. Chapter
Fig. Figure
Pag. Page
Sec. Section
Tab. Table
Delivery of the system and the instruction manual
When the system is delivered, it is important that:
The instruction manual is supplied 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 Assist-
ance Centre;
The system supplier carefully informs the user about:
- the use of the system,
- any further tests that may be necessary before the sys-
tem is started up,
- maintenance and the need to have the system checked
at least once a year by the manufacturer or another spe-
cialised technician.
To ensure a periodic check, recommends the
drawing up of a Maintenance Contract.
2 Information and general instructions
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
This symbol indicates operations which, if not car-
ried out correctly, lead to electric shocks with le-
thal consequences.
ENVIRONMENTAL PROTECTION
This symbol gives indications for the use of the
machine with respect for the environment.

6069 4
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Information and general instructions
2.2 Guarantee and responsibility
guarantees its new products from the installation date, in
accordance with the regulations in force and/or the sales con-
tract. 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 non authorised modifications on the equip-
ment;
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 power supply system;
use of the burner even following an error and/or an irregu-
larity;
repairs and/or overhauls incorrectly carried out;
modification of the combustion chamber with inserts that
prevent the regular development of the flame, as structur-
ally established;
insufficient and inappropriate surveillance and care of those
burner components most subject to wear and tear;
use of non-original components, including spare
parts, kits, accessories and optionals;
force majeure.
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 installa-
tion and the carrying out of non authorised modifi-
cations will result in the annulment by 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 tech-
nical rules of safety and envisaging all the potential danger situ-
ations.
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
dangerous.
In particular:
it can be applied to boilers operating with water, steam, dia-
thermic oil, and to other users expressly named by the man-
ufacturer;
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 room temperature must
all be within the values indicated 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;
must take all the measures necessary to prevent unauthor-
ised people gaining access to the machine;
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;
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 equip-
ment envisaged by legislation and follow the indications
given in this manual.
Personnel must follow all the danger and caution indications
shown on the machine.
Personnel must not carry out, on their own initiative, opera-
tions or interventions that are not within their province.
Personnel are obliged to 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 all responsibility for any damage that may
be caused by the use of non-original parts.
3 Safety and prevention

6069 6
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Technical description of the burner
4.1 Technical data
(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.
4.2 Electrical data
Motor IE1
Motor IE2
4 Technical description of the burner
MODEL RL 70 RL 100 RL 130
TYPE 660 T1 661 T1 662 T1
OUTPUT (1)
DELIVERY (1)
2nd stage kW 474 - 830
408 - 714
40 - 70
711 - 1186
612 - 1020
60 - 100
948 - 1540
816 - 1325
80 - 130
Mcal/h
kg/h
1nd stage kW 255 - 474 356 - 711 486 - 948
Mcal/h 219 - 408 306 - 612 418 - 816
kg/h 21.5 - 40 30 - 60 41 - 80
FUEL LIGHT OIL
- Net calorific value kWh/kg
Mcal/kg
11.8
10.2 (10.200 Kcal/kg)
- Density kg/dm30.82 - 0.85
- viscosity at 20 °C mm2/s max 6 (1,5 °E - 6 cSt)
OPERATION Intermittent (min. 1 stop in 24 hours).
Two-stage (high and low flame) and single-stage (all - nothing).
NOZZLES number 2
STANDARD APPLICATIONS Boilers: water, steam, diathermic oil
AMBIENT TEMPERATURE °C 0 - 40
COMBUSTION AIR TEMPERATURE °C max 60
PUMP delivery (at 12 bar)
pressure range
fuel temperature
kg/h
bar
°C max
107
10 - 20
60
220
10 - 20
60
220
10 - 20
60
ELECTRICAL PROTECTION IP 44
NOISE LEVELS (2) dBA 75 77 78.5
MODEL RL 70 RL 100 RL 130
POWER SUPPLY V
Hz
230 - 400 with neutral ~ +/- 10%
50 - three-phase
ELECTRICAL MOTOR rpm
kW
V
A
2800
1.1
230/400
4.7/2.7
2830
1.5
230/400
6.4/3.7
2860
2.2
230/400
8.5/4.9
IGNITION TRASFORMER V1 - V2
I1 - I2
230 V - 2 x 5 kV
1.9 A - 30 mA
ELECTRICAL POWER CONSUMPTION kW max 2.0 2.6 3.2
MODEL RL 70 RL 100 RL 130
POWER SUPPLY V
Hz
230 - 400 with neutral ~ +/- 10%
50 - three-phase
ELECTRICAL MOTOR rpm
kW
V
A
2860
1.1
230/400
4.1/2.4
2860
1.5
230/400
5.5/3.4
2860
2.2
230/400
7.9/4.6
IGNITION TRASFORMER V1 - V2
I1 - I2
230 V - 2 x 5 kV
1.9 A - 30 mA
ELECTRICAL POWER CONSUMPTION kW max 1.9 2.5 3.1

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Technical description of the burner
4.2.1 Variants
4.2.2 Accessories (optional):
•RADIO DISTURBANCEPROTECTION KIT
If the burner is installed in places particularly subject to
radio disturbance (emission of signals exceeding 10 V/m)
owing to the presence of an INVERTER, or in applications
where the length of the thermostat connections exceeds 20
metres, a protection kit is available as an interface between
the control box and the burner.
•DEGASSING UNIT
It may occur that a certain amount of air is contained in the light
oil sucked up by the pump. This air may originate from the light
oil itself as a consequence of depressurization or air leaking past
imperfect seals.
In double-pipe systems, the air returns to the tank from the return
pipe; in single-pipe systems, the air remains in circulation causing
pressure variations in the pump and burner malfunctions.
For this reason, we advise installing a degassing unit near the
burner in single-pipe installations.
Degassing units are provided in two versions:
CODE 3010054 without filter
CODE 3010055 with filter
• Burner delivery : max. 80 kg/h
• Light oil pressure : max. 0.7 bar
• Ambient temperature : max. 50 °C (without filter)
• Ambient temperature : max. 40 °C (with filter)
• Light oil temperature : max. 50 °C (without filter)
• Light oil temperature : max. 40 °C (with filter)
• Connectors : 1/4 inch
For burner deliveries higher than 80 kg/h, install two parallel de-
gassing units
Model Code Power supply
electrical Length of blast tube mm
RL 70 3475030 - 3475032 Three-phase 250
3475031 - 3475033 Three-phase 385
RL 100 3475230 - 3475232 Three-phase 250
3475231 - 3475233 Three-phase 385
RL 130 3475430 - 3475432 Three-phase 250
3475431 - 3475433 Three-phase 385
BURNER RL 70 - RL 100 - RL 130
Code 3010386

6069 8
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Technical description of the burner
4.3 Burner description (Fig. 1)
1 Ignition electrodes
2 Combustion head
3 Screw for combustion head adjustment
4 Screw for fixing fan to flange
5 Slide bars for opening the burner and inspecting the com-
bustion head
6 Safety solenoid valve
7Pump
8 Air inlet to fan
9 Air gate valve
10 Hydraulic cylinder for regulation of the air gate valve in 1st
and 2nd stage positions.
When the burner is not operating the air gate valve 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.
11 Fan pressure test point
12 Boiler mounting flange
13 Flame stability disk
14 Electrical motor
15 Extensions for slide bars 5)
16 Ignition transformer
17 Motor contactor and thermal cut-out with reset button
18 1st and 2nd stage valve assembly
19 Terminal strip
20 Two switches:
- one "burner off - on"
- one for "1st - 2nd stage operation"
21 Fairleads for wiring carried out by the installer
22 Control box with lock-out pilot light and lock-out reset button
23 Flame inspection window
24 Pump pressure adjustment
25 Photoresistor for flame presence control
Two types of burner failure may occur:
Control box lock-out: if the control box 22)(Fig. 1) pushbutton
(red led) lights up, it indicates that the burner is in lock-out.
To reset, hold the pushbutton down for between 1 and 3 seconds.
Motor trip: release by pressing the pushbutton on thermal cut-
out 17)(Fig. 1).
4.3.1 Weight (Tab. A) - approximate measurements
• The weight of the burner complete with its packaging is
shown in table (Tab. A)
Tab. A
Fig. 1
D684
D3288
kg
RL 70 60
RL 100 63
RL 130 66

9 6069
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Technical description of the burner
4.3.2 Max. dimensions (Fig. 2) -
approximate measurements
The maximum dimensions of the burner are given in (Fig. 2).
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
4.3.3 Standard equipment
2 - Flexible hoses
2 - Gaskets for flexible hoses
2 - Nipples for flexible hoses
1 - Thermal insulation screen
2 Extensions 15)(Fig. 1) for slide bars 5)(Fig. 1)
(for models with 385 mm blast tube)
4 - Screws to secure the burner flange to the boiler: M 12 x 35
2 - Nozzles
1 - Instruction booklet
1 - Spare parts list
Fig. 2
D686
mm ABCDE F (1) GH I (1)
RL 70 580 296 284 555 680 250 - 385 179 430 951 - 1086
RL 100 599 312 287 555 680 250 - 385 179 430 951 - 1086
RL 130 625 338 287 555 680 250 - 385 189 430 951 - 1086

6069 10
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Technical description of the burner
4.4 Firing rates (Fig. 3)
The RL 70 - 100 - 130 burners model can work in two ways: one-
stage and two-stage.
1st stage DELIVERY must be selected within area A of the ad-
jacent diagrams.
2nd stage DELIVERY must be selected within area B (and C for
model RL 130). This area provides the maximum delivery of the
burner in relation to the pressure in the combustion chamber.
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 B.
In order to utilize also area C (RL 130) it is necessary to perform
the calibration of the combustion head as explained on pag. 12.
4.4.1 Test boiler (Fig. 4)
The firing rates were set in relation to special test boilers in ac-
cordance with the methods defined in EN 267 standards.
Fig. 4 indicates the diameter and length of the test combustion
chamber.
Example:
delivery 65 kg/hour:
diameter = 60 cm; length = 2 m.
Whenever the burner is operated in a much smaller commercial-
ly-available combustion chamber, a preliminary test should be
performed.
combustion chamber pressure mbar combustion chamber pressure mbar combustion chamber pressure mbar
D687
Fig. 3
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 pag. 15.
Fig. 4
combustion chamber pressure mbar
D688

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Installation
Notes on safety for the installation
After carefully cleaning all around the area where the burner will be installed, and arranging the correct lighting of the environment,
proceed with the installation operations.
5.1 Handling
The packaging of the burner includes a wooden platform, so it is possible to move the burner (still packaged) with a transpallet truck
or fork lift truck.
5.2 Preliminary checks
Checking the consignment
Checking the characteristics of the burner
Check the identification label of the burner, showing:
the model (see A in Fig. 5) and type of burner (B);
the year of manufacture, in cryptographic form (C);
the serial number (D);
the electrical input power (E);
the types of fuel used and the relative supply pressures (F);
the data of the burner's minimum and maximum output pos-
sibilities (G) (see Firing rate)
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.
WARNING
The handling operations for the burner can be highly dangerous if not carried out with the greatest attention: keep any
unauthorised people at a distance; check the integrity and suitableness of the available means of handling.
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 the handling, keep the load at not more than 20-25 cm from the ground.
CAUTION
After positioning the burner near the installation point, correctly dispose of all residual packaging, separating the various
types of material. Before proceeding with the installation operations, carefully clean all around the area where the burn-
er will be installed.
CAUTION
After removing all the packaging, check the integrity of the contents. In the event of doubt, do not use the burner; con-
tact 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.
D8965
RI ELL O S. p. A.
I−37045 Legnago (VR) 0036
A
BC
DE
G
F
Fig. 5
WARNING
The output of the burner must be within the boil-
er's firing rate;
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.

6069 12
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Installation
5.3 Boiler plate (Fig. 6)
Drill the combustion chamber locking plate as shown in (Fig. 6).
The position of the threaded holes can be marked using the ther-
mal screen supplied with the burner.
5.4 Blast tube length (Fig. 7)
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:
Blast tube 9): RL 70 RL 100 RL 130
• short 250 250 250
• long 385 385 385
For boilers with front flue passes 12) or flame inversion cham-
bers, protective fettling in refractory material 10) must be inserted
between the boiler's 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. 7) is not required unless it is expressly requested by the
boiler manufacturer.
5.5 Securing the burner to the boiler (Fig. 8)
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).
Combustion head calibration
At this point check, for model RL 130, whether the maximum de-
livery of the burner in 2nd stage operation is contained in area B
or in area C of the firing rate. See pag. 10.
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. 8) 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. 7) to the boiler plate interposing the supplied
gasket 8). Use the 4 screws provided after having protected the
thread with anti-seize products (high-temperature grease, com-
pounds, graphite).
The burner-boiler seal must be airtight.
D455 Fig. 6
mm A B C
RL 70 185 275-325 M 12
RL 100 185 275-325 M 12
RL 130 195 275-325 M 12
D689 Fig. 7
Fig. 8
D690

13 6069
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Installation
5.6 Choice of nozzles for 1st and 2nd stage
Both nozzles must be chosen from among those listed in table
(Tab. B).
The first nozzle determines the delivery of the burner in the 1st
stage.
The second nozzle works together with the 1st nozzle to deter-
mine the delivery of the burner in the 2nd stage.
The deliveries of the 1st and 2nd stages must be contained within
the value range indicated on pag. 6.
Use nozzles with a 60° spray angle at the recommended pres-
sure of 12 bar.
The two nozzles usually have equal deliveries, but the 1st stage
nozzle may have the following specifications if required:
a delivery less than 50% of the total delivery whenever the
back-pressure peak must be reduced at the moment of fir-
ing: the burner allows good combustion values also with a
ratio 40 - 100 % between the 1st and 2nd stage;
a delivery higher than 50% of the total delivery whenever
the combustion during the 1st stage must be improved.
Tab. B
(1) light oil: density 0.84 kg/dm3- viscosity 4.2 cSt/20 °C - tem-
perature 10 °C
Example with the RL 70 model:
Boiler output = 635 kW - efficiency 90 %
Output required by the burner =
635 : 0,9 = 705 kW
705 : 2 = 352 kW per nozzle;
therefore, two equal, 60°, 12 bar nozzles are required:
1° = 7,0 GPH - 2° = 7,0 GPH,
or the following two different nozzles:
1° = 6,0 GPH - 2° = 8,0 GPH,
or:
1° = 8,0 GPH - 2° = 6,0 GPH,
GPH kg/h (1) kW
12 bar
10 bar 12 bar 14 bar
5.00
5.50
6.00
6.50
7.00
7.50
8.00
8.30
8.50
9.00
9.50
10.0
10.5
11.0
12.0
12.3
13.0
13.8
14.0
15.0
15.3
16.0
17.0
17.5
18.0
19.0
19.5
20.0
21.5
22.0
19.2
21.1
23.1
25.0
26.9
28.8
30.8
31.9
32.7
34.6
36.5
38.4
40.4
42.3
46.1
47.3
50.0
53.1
53.8
57.7
58.8
61.5
65.4
67.3
69.2
73.0
75
76.9
82.7
84.6
21.2
23.3
25.5
27.6
29.7
31.8
33.9
35.2
36.1
38.2
40.3
42.4
44.6
46.7
50.9
52.2
55.1
58.5
59.4
63.6
64.9
67.9
72.1
74.2
76.4
80.6
82.7
84.8
91.2
93.3
23.1
25.4
27.7
30.0
32.3
34.6
36.9
38.3
39.2
41.5
43.8
46.1
48.4
50.7
55.3
56.7
59.9
63.3
64.5
69.2
70.5
73.8
78.4
80.7
83.0
87.6
89.9
92.2
99.1
101.4
251.4
276.3
302.4
327.3
352.3
377.2
402.1
417.5
428.2
453.1
478.0
502.9
529.0
553.9
603.7
619.1
653.5
693.8
704.5
754.3
769.7
805.3
855.1
880.0
906.1
956.0
980.9
1005.8
1081.7
1106.6

6069 14
GB
Installation
5.7 Nozzle assembly
At this stage of installation the burner is still disassembled from
the blast tube; it is therefore possible to fit two nozzles with the
box spanner 1)(Fig. 9) (16 mm), after having removed the plastic
plugs 2)(Fig. 9), fitting the spanner through the central hole in the
flame stability disk. Do not use any sealing products such as gas-
kets, sealing compound, or tape. Be careful to avoid damaging
the nozzle sealing seat. The nozzles must be screwed into place
tightly but not to the maximum torque value provided by the
wrench.
The nozzle for the 1st stage of operation is the one lying beneath
the firing electrodes (Fig. 10)
Make sure that the electrodes are positioned as shown in (Fig.
10)
Finally refit the burner 3)(Fig. 11) 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. 7 pag.
12).
– Remove the nuts 1) (Fig. 12) and the disk 2).
– Use spanner 3)(Fig. 12) to change the nozzles.
NOTE:
The supplied nozzles can be used when meeting the re-
quired delivery only. Otherwise they must be replaced with
complying nozzles.
D691 Fig. 9
Fig. 10
D692
Fig. 11
D693
Fig. 12
D694

15 6069
GB
Installation
5.8 Combustion head setting
The setting of the combustion head depends exclusively on the
delivery of the burner in the 2nd stage - in other words, the com-
bined delivery of the two nozzles selected on pag. 13.
Turn screw 4)(Fig. 13) until the notch shown in diagram (Fig. 14)
is level with the front surface of flange 5)(Fig. 13).
Example:
The RL 70 Model with two 6.0 GPH nozzles and 12 bar pump
pressure.
Find the delivery of the two 6.0 GPH nozzles in (Tab. B pag. 13):
25.5 + 25.5 = 51 kg/h.
Diagram Fig. 14 indicates that for a delivery of 51 kg/h the RL 70
Model requires the combustion head to be set to approx. three
notches, as shown in Fig. 13
Fig. 13
D462
Fig. 14
D695
Notches no.
Light oil delivery in 2nd stage kg/h

6069 16
GB
Electrical system
6 Electrical system
Notes on safety for the electrical wiring
DANGER
The electrical wiring must be carried out with the electrical supply disconnected.
Electrical wiring must be carried out by qualified personnel and in compliance with the regulations currently in
force in the country of destination. Refer to the wiring diagrams.
declines all responsibility for modifications or connections different from those shown in the electrical
layouts.
Do not invert the neutral with the phase in the electrical supply line. Any inversion would cause a lockout due to
firing failure.
The RL 70-100-130 burners have been type-approved for intermittent operation. This means they should com-
pulsorily be stopped at least once every 24 hours to enable the control box to perform checks of its own start-up
efficiency. Normally the boiler's thermostat/pressure switch ensures the stopping of the burner.
If this is not the case, it is necessary to apply in series with IN a timer switch that turns off the burner at least once
every twenty-four hours.Refer to the wiring diagrams.
The electrical safety of the device is obtained only when it is correctly connected to an efficient earthing system,
made according to current standards. It is necessary to check this fundamental safety requirement. In the event
of doubt, have the electrical system checked by qualified personnel.
The electrical system must be suitable for the maximum input power of the device, as indicated on the label and
in the manual, checking in particular that the section of the cables is suitable for the input power of the device.
For the main power supply of the device from the electricity mains:
- do not use adapters, multiple sockets or extensions;
- use an omnipolar switch with an opening of at least 3 mm (overvoltage category) between the contacts, as
indicated by the current safety standards.
Do not touch the device with wet or damp body parts and/or in bare feet.
Do not pull the electric cables.

17 6069
GB
Electrical system
6.1 Electrical system (factory set)
Burners RL 70 - RL 100 - RL 130
Models RL 70 - 100 - 130 leave the factory preset for 400 V
power supply.
If 230 V power supply is used, change the motor connection
from star to delta and change the setting of the thermal cut-
out as well.
Key to wiring diagram (Fig. 15)
CMV - Motor contactor
FR - Photoresistor
I1 - Switch: burner off - on
I2 - Switch: 1st - 2nd stage operation
MB - Terminal strip
MV - Fan motor
RMO88.53A2 - Control box
RT - Thermal cut-out
TA - Ignition transformer
TB - Burner ground (earth) connection
V1 - 1st stage solenoid valve
V2 - 2nd stage solenoid valve
VS - Safety solenoid valve
XP1 - Connector for STATUS
NOTE:
For remote-reset, connect a push-button switch (NO) be-
tween terminal 3 and neutral of the control box (terminals 15,
16, 17 and 18).
6.1.1 Electrical connections (Fig. 16)
Set up by the installer
Use flexible cables according to regulation EN 60 335-1:
if in PVC boot, use at least H05 VV-F
if in rubber boot, use at least H05 RR-F.
All the cables to be connected to the burner terminal strip 8)(Fig.
16) must be routed through the fairleads.
The fairleads and precut holes can be used in various ways. One
example is given below:
1 Pg 13,5 Three-phase power supply
2 Pg 11 Single-phase power supply
3 Pg 11 Control device TL
4 Pg 9 Control device TR
5 Pg 9 Fitting hole for fairlead, if required
6 Pg 11 Fitting hole for fairlead, if required
7 Pg 13,5 Fitting hole for fairlead, if required
Fig. 15
D3229
Fig. 16
D3312

6069 18
GB
Electrical system
RL 70 - 100 - 130 Models electrical connection three-phase 230/400 V power supply with neutral phase wire.
Fuses and cables section layout, see table (Fig. 17).
Cable section not indicated: 1.5 mm2.
Key to wiring diagram (Fig. 17)
H1 - 1st stage hourcounter
H2 - 2nd stage hourcounter
IN - Manual burner stop switch
MB - Terminal strip
S - Remote lock-out signal
TB - Burner ground (earth) connection
TL - Limit control device system: this shuts down the burner
when the boiler temperature or pressure exceeds the set-
point value.
TR - High-low mode control device system: this controls oper-
ating stages 1 and 2 and is necessary only for two-stage
operation.
TS - Safety control device system: this operates when TL is
faulty.
Alternatively, if single stage operation is required, instead of con-
trol device TR install a jumper lead between terminal 5 and 6 of
the terminal strip.
Calibration of thermal cut-out 17)(Fig. 1 pag. 8)
This is required to avoid motor burn-out in the event of a signifi-
cant increase in power absorption caused by a missing phase.
If the motor is star-powered, 400 V, the cursor should be
positioned to "MIN".
If the motor is delta-powered, 230 V, the cursor should be
positioned to "MAX".
Even if the scale of the thermal cut-out does not include rated mo-
tor absorption at 400 V, protection is still ensured in any case.
NOTE:
Burners RL 70 - 100 - 130 leave the factory preset for 400 V
power supply. If 230 V power supply is used, change the mo-
tor connection from star to delta and change the setting of
the thermal cut-out as well.The RL 70 - 100 - 130 burners
have been type-approved for intermittent operation. This
means they should compulsorily be stopped at least once
every 24 hours to enable the control box to perform checks
of its own efficiency at start-up. Burner halts are normally
provided for automatically by the boiler load control system.
If this is not the case, it is necessary to apply in series with
IN a timer switch that turns off the burner at least once every
twenty-four hours.
Fig. 17
D3239
RL 70 RL 100 RL 130
230 V 400 V 230 V 400 V 230 V 400 V
F A T10T6T16T10T16T10
Lmm21.5 1.5 1.5 1.5 1.5 1.5
WARNING
The burner is factory set for two-stage operation
and the TR remote control device that commands
light oil valve V2 must therefore be connected.
WARNING
Do not invert the neutral with the phase in the
electrical supply line.
Fig. 18
D867