Riello RLS 310/E MX Quick start guide

Installation, use and maintenance instructions
20081825 (4) - 12/2015
Dual fuel gas oil/ gas burners
Progressive two-stage or modulating operation
CODE MODEL TYPE
20082946 - 20087643
20087644 RLS 310/E MX 1161T1
20084376 - 20087645
20087646 RLS 410/E MX 1162T1
20083562 RLS 510/E MX 1163T1
20080180 RLS 610/E MX 1164T1
GB

Original instructions

1 20081825
GB
Contents
1 Declarations................................................................................................................................................................................ 4
2 Information and general warnings............................................................................................................................................ 5
2.1 Information about the instruction manual.................................................................................................................... 5
2.1.1 Introduction.................................................................................................................................................................. 5
2.1.2 General dangers.......................................................................................................................................................... 5
2.1.3 Other symbols............................................................................................................................................................. 5
2.1.4 Delivery of the system and the instruction manual...................................................................................................... 6
2.2 Guarantee and responsibility....................................................................................................................................... 6
3 Safety and prevention................................................................................................................................................................ 7
3.1 Introduction.................................................................................................................................................................. 7
3.2 Personnel training ....................................................................................................................................................... 7
4 Technical description of the burner ......................................................................................................................................... 8
4.1 Burner designation...................................................................................................................................................... 8
4.2 Models available.......................................................................................................................................................... 9
4.3 Burner categories - Countries of destination............................................................................................................... 9
4.4 Technical data........................................................................................................................................................... 10
4.5 Electrical data............................................................................................................................................................ 11
4.6 Burner weight............................................................................................................................................................ 12
4.7 Maximum dimensions................................................................................................................................................ 12
4.8 Firing rates ................................................................................................................................................................ 13
4.9 Test boiler.................................................................................................................................................................. 14
4.10 Burner equipment...................................................................................................................................................... 14
4.11 Burner description..................................................................................................................................................... 15
4.12 Electrical panel description........................................................................................................................................ 16
4.13 Control box for the air/fuel ratio (LMV 26...).............................................................................................................. 17
4.14 Operation sequence of the burner (gas operation) ................................................................................................... 19
4.15 Operation sequence of the burner (light oil operation).............................................................................................. 20
4.15.1 List of the phases (gas operation)............................................................................................................................. 21
4.15.2 List of the phases (light oil operation)........................................................................................................................ 21
4.16 Operator panel operation .......................................................................................................................................... 21
4.16.1 Description of the symbols on the display................................................................................................................. 22
4.16.2 Description of the buttons.......................................................................................................................................... 22
4.17 Servomotor (SQM33....)............................................................................................................................................ 23
4.18 Calibration of the thermal relay ................................................................................................................................. 23
5 Installation ................................................................................................................................................................................ 24
5.1 Notes on safety for the installation............................................................................................................................ 24
5.2 Handling.................................................................................................................................................................... 24
5.3 Preliminary checks.................................................................................................................................................... 24
5.4 Operating position..................................................................................................................................................... 25
5.5 Preparing the boiler................................................................................................................................................... 25
5.5.1 Boring the boiler plate ............................................................................................................................................... 25
5.5.2 Blast tube length........................................................................................................................................................ 25
5.6 Securing the burner to the boiler............................................................................................................................... 25
5.7 Access to head internal part...................................................................................................................................... 26
5.8 Position of the electrodes and central gas nozzles................................................................................................... 26
5.9 Gas butterfly valve..................................................................................................................................................... 27
5.10 Combustion head adjustment.................................................................................................................................... 27
5.11 Nozzle installation ..................................................................................................................................................... 28
5.11.1 Recommended nozzle............................................................................................................................................... 28
5.12 Light oil supply........................................................................................................................................................... 29
5.12.1 Double-pipe circuit..................................................................................................................................................... 29
5.12.2 The loop circuit.......................................................................................................................................................... 29

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Contents
5.12.3 Hydraulic connections................................................................................................................................................29
5.12.4 Priming pump.............................................................................................................................................................30
5.12.5 Pressure variator........................................................................................................................................................30
5.12.6 Hydraulic circuit diagram............................................................................................................................................31
5.13 Gas pressures............................................................................................................................................................32
5.13.1 Gas feeding line.........................................................................................................................................................32
5.13.2 Gas train ....................................................................................................................................................................33
5.13.3 Gas train installation ..................................................................................................................................................33
5.13.4 Gas pressure .............................................................................................................................................................34
5.14 Electrical wiring..........................................................................................................................................................35
5.14.1 Supply cables and external connections passage.....................................................................................................35
6 Start-up, calibration and operation of the burner..................................................................................................................36
6.1 Notes on safety for the first start-up...........................................................................................................................36
6.2 Adjustments prior to ignition (light oil)........................................................................................................................36
6.2.1 Nozzle........................................................................................................................................................................36
6.2.2 Combustion head.......................................................................................................................................................36
6.2.3 Pump pressure...........................................................................................................................................................36
6.3 Burner ignition (light oil) .............................................................................................................................................36
6.3.1 Burner adjustment (light oil).......................................................................................................................................36
6.4 Adjustments prior to ignition (gas) .............................................................................................................................37
6.5 Burner start-up (gas)..................................................................................................................................................37
6.6 Burner ignition............................................................................................................................................................37
6.7 Change of fuel............................................................................................................................................................38
6.8 Air / fuel adjustment...................................................................................................................................................39
6.8.1 Air adjustment for maximum output ...........................................................................................................................39
6.8.2 Air/fuel adjustment and output modulation system....................................................................................................39
6.8.3 Burner adjustment (gas) ............................................................................................................................................39
6.8.4 Output upon ignition...................................................................................................................................................39
6.8.5 Maximum output ........................................................................................................................................................39
6.8.6 Minimum output .........................................................................................................................................................39
6.9 Final adjustment of the pressure switches.................................................................................................................40
6.9.1 Air pressure switch.....................................................................................................................................................40
6.10 Pressure switch adjustment.......................................................................................................................................41
6.10.1 Maximum gas pressure switch...................................................................................................................................41
6.10.2 Minimum gas pressure switch....................................................................................................................................41
6.10.3 PVP pressure switch kit .............................................................................................................................................41
6.10.4 Minimum oil pressure switch......................................................................................................................................41
6.10.5 Maximum oil pressure switch.....................................................................................................................................41
6.11 Visualisation and programming mode........................................................................................................................42
6.11.1 Normal mode .............................................................................................................................................................42
6.11.2 Info mode...................................................................................................................................................................43
6.11.3 Service mode.............................................................................................................................................................44
6.11.4 Parameters Mode ......................................................................................................................................................44
6.12 Parameter modification procedure.............................................................................................................................45
6.13 Start-up procedure.....................................................................................................................................................47
6.14 Backup / Restore procedure ......................................................................................................................................49
6.14.1 Backup.......................................................................................................................................................................49
6.14.2 Restore ......................................................................................................................................................................50
6.14.3 List of parameters ......................................................................................................................................................52
6.15 Operation ...................................................................................................................................................................57
6.16 Ignition failure.............................................................................................................................................................58
6.17 Burner flame goes out during operation.....................................................................................................................58
6.18 Stopping of the burner ...............................................................................................................................................58
6.19 Final checks...............................................................................................................................................................58
6.20 Fan motor and pump motor lockout...........................................................................................................................58
7 Maintenance ..............................................................................................................................................................................59
7.1 Notes on safety for the maintenance.........................................................................................................................59
7.2 Maintenance programme...........................................................................................................................................59

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Contents
7.2.1 Maintenance frequency............................................................................................................................................. 59
7.2.2 Checking and cleaning.............................................................................................................................................. 59
7.2.3 Safety components.................................................................................................................................................... 59
7.2.4 Measuring the flame signal ....................................................................................................................................... 60
7.3 Opening the burner ................................................................................................................................................... 61
7.4 Closing the burner..................................................................................................................................................... 61
7.4.1 Checking the air and gas pressure on the combustion head .................................................................................... 61
8 Faults - Possible causes - Solutions...................................................................................................................................... 62
8.1 List of error codes...................................................................................................................................................... 62
A Appendix - Accessories........................................................................................................................................................... 69
B Appendix - Electrical panel layout.......................................................................................................................................... 70

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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: Dual fuel light oil/ gas burners
Model and type: RLS 310/E MX
RLS 410/E MX
RLS 510/E MX
RLS 610/E MX
1161T1
1162T1
1163T1
1164T1
These products are in compliance with the following Technical Standards:
EN 676
EN 12100
and according to the European Directives:
GAD 2009/142/EC Gas Devices Directive
MD 2006/42/EC Machine Directive
LVD 2014/35/UE Low Voltage Directive
EMC 2014/30/UE Electromagnetic Compatibility
The products are marked as follows: RLS 310/E MX (Class 2 EN 267 - Class 3 EN676)
RLS 410/E MX (Class 2 EN 267 - Class 3 EN676)
RLS 510/E MX (Class 2 EN 267 - Class 3 EN676)
RLS 610/E MX (Class 2 EN 267 - Class 3 EN676)
The quality is guaranteed by a quality and management system certified in accordance with UNI EN ISO 9001.
Manufacturer's Declaration
RIELLO S.p.A. declares that the following products comply with the NOx emission limits specified by German standard “1. BIm-
SchV revision 26.01.2010”.
Product Model Type Output
Forced draught gas burners RLS 310/E MX 1161T1 600 - 3600 kW
RLS 410/E MX 1162T1 640 - 4200 kW
RLS 510/E MX 1163T1 660 - 5170 kW
RLS 610/E MX 1164T1 1000 - 6155 kW
Legnago, 21.05.2015 Executive General Manager
RIELLO S.p.A. - Burner Department Research & Development Director RIELLO S.p.A. - Burner Department
Mr. U. Ferretti Mr. F. Comencini
0085CQ0196

5 20081825
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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 Ser-
vice of the area;
is designed for use by qualified personnel;
offers important indications and instructions relating to the
installation safety, start-up, use and maintenance of the
burner.
Symbols used in the manual
In some parts of the manual you will see triangular DANGER
signs. Pay great attention to these, as they indicate a situation of
potential danger.
2.1.2 General dangers
The dangers can be of 3 levels, as indicated below.
2.1.3 Other symbols
Abbreviations used
Ch. Chapter
Fig. Figure
Page Page
Sec. Section
Tab. Table
2 Information and general warnings
DANGER
Maximum danger level!
This symbol indicates operations which, if not car-
ried out correctly, cause serious injury, death or
long-term health risks.
WARNING
This symbol indicates operations which, if not car-
ried out correctly, may cause serious injury, death
or long-term health risks.
CAUTION
This symbol indicates operations which, if not car-
ried out correctly, may cause damage to the ma-
chine and/or injury to people.
DANGER
DANGER: LIVE COMPONENTS
This symbol indicates operations which, if not car-
ried out correctly, lead to electric shocks with le-
thal consequences.
DANGER: FLAMMABLE MATERIAL
This symbol indicates the presence of flammable
materials.
DANGER: BURNING
This symbol indicates the risks of burns due to
high temperatures.
DANGER: CRUSHING OF LIMBS
This symbol indicates the presence of moving
parts: danger of crushing of limbs.
WARNING: MOVING PARTS
This symbol indicates that you must keep limbs
away from moving mechanical parts; danger of
crushing.
DANGER: EXPLOSION
This symbol signals places where an explosive at-
mosphere may be present. An explosive atmos-
phere is defined as a mixture - under atmospheric
conditions - of air and flammable substances in
the form of gases, vapours, mist or dust in which,
after ignition has occurred, combustion spreads to
the entire unburned mixture.
PERSONAL PROTECTION EQUIPMENT
These symbols indicate the equipment that must
be worn and kept by the operator for protection
against threats against safety and/or health while
at work.
OBLIGATION TO ASSEMBLE THE COVER AND
ALL THE SAFETY AND PROTECTION DEVICES
This symbol signals the obligation to reassemble
the cover and all the safety and protection devices
of the burner after any maintenance, cleaning or
checking operations.
ENVIRONMENTAL PROTECTION
This symbol gives indications for the use of the
machine with respect for the environment.
IMPORTANT INFORMATION
This symbol indicates important information that
you must bear in mind.
This symbol indicates a list.

20081825 6
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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 Assis-
tance Centre;
The system supplier must carefully inform the user about:
– the use of the system;
– any further tests that may be required before activating the
system;
– maintenance, and the need to have the system checked at
least once a year by a representative of the manufacturer
or another specialised technician.
To ensure a periodic check, the manufacturer recom-
mends the drawing up of a Maintenance Contract.
2.2 Guarantee and responsibility
The manufacturer guarantees its new products from the date of
installation, in accordance with the regulations in force and/or the
sales contract. At the moment of the first start-up, check that the
burner is integral and complete.
In particular, the rights to the guarantee and the responsibility will
no longer be valid, in the event of damage to things or injury to
people, if such damage/injury was due to any of the following
causes:
incorrect installation, start-up, use and maintenance of the
burner;
improper, incorrect or unreasonable use of the burner;
intervention of unqualified personnel;
carrying out of unauthorised modifications on the equipment;
use of the burner with safety devices that are faulty, incor-
rectly applied and/or not working;
installation of untested supplementary components on the
burner;
powering of the burner with unsuitable fuels;
faults in the fuel supply system;
continuation of use of the burner when a fault has occurred;
repairs and/or overhauls incorrectly carried out;
modification of the combustion chamber with inserts that
prevent the regular development of the structurally estab-
lished flame;
insufficient and inappropriate surveillance and care of those
burner components most likely to be subject to wear and
tear;
use of non-original components, including spare parts, kits,
accessories and optional;
force majeure.
The manufacturer furthermore declines any and every re-
sponsibility for the failure to observe the contents of this
manual.
.........................................................................................
.........................................................................................
.........................................................................................
.........................................................................................
WARNING
Failure to observe the information given in this
manual, operating negligence, incorrect installa-
tion and carrying out of non authorised modifica-
tions will result in the annulment by the
manufacturer of the guarantee that it supplies with
the burner.

7 20081825
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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
rules of safety and envisaging all the potential danger situations.
It is necessary, however, to bear in mind that the imprudent and
clumsy use of the equipment may lead to situations of death risk
for the user or third parties, as well as the damaging of the burner
or other items. Inattention, thoughtlessness and excessive confi-
dence often cause accidents; the same applies to tiredness and
sleepiness.
It is a good idea to remember the following:
The burner must only be used as expressly described. Any
other use should be considered improper and therefore dan-
gerous.
In particular:
it can be applied to boilers operating with water, steam, diather-
mic oil, and to other uses expressly foreseen by the manufactur-
er;
the type and pressure of the fuel, the 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 cham-
ber and the room temperature must all be within the values indi-
cated in the instruction manual.
Modification of the burner to alter its performance and desti-
nations is not allowed.
The burner must be used in exemplary technical safety con-
ditions. Any disturbances that could compromise safety must
be quickly eliminated.
Opening or tampering with the burner components is not
allowed, apart from the parts requiring maintenance.
Only those parts envisaged by the manufacturer can be
replaced.
3.2 Personnel training
The user is the person, body or company that has acquired the
machine and intends to use it for the specific purpose. He is re-
sponsible for the machine and for the training of the people work-
ing around it.
The user:
undertakes to entrust the machine exclusively to suitably
trained and qualified personnel;
undertakes to inform his personnel in a suitable way about
the application and observance of the safety instructions.
With that aim, the user undertakes to ensure that everyone
knows the use and safety instructions for his own duties.
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 manufacturing company
therefore accepts no responsibility whatsoever for any which
may result from the use of non-original parts.
In addition:
3 Safety and prevention
WARNING
The manufacturer guarantees safety and proper
functioning only if all burner components are intact
and positioned correctly.
must take all the measures necessary to pre-
vent unauthorised people gaining access to
the machine;
the user must inform the manufacturer if
faults or malfunctioning of the accident pre-
vention systems are noticed, along with any
presumed danger situation;
personnel must always use the personal pro-
tective equipment envisaged by legislation
and follow the indications given in this man-
ual.

20081825 8
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Technical description of the burner
4.1 Burner designation
4 Technical description of the burner
Range: R
Size
Fuel: Natural gas
Gas oil
Light oil / Gas
Adjustment:
Flame control system:
FS1
FS2 Standard (1 stop every 24 h) Continuous operation (1 stop every 72 h)
Electrical supply of the system:
3/400/50
3/230/50
Voltage of auxiliaries:
230/50/60
110/50/60
RLS 310 ETC FS1 3/400/50 230/50/60
BASIC DESIGNATION
EXTENDED DESIGNATION
MX
3N / 400V / 50Hz
3 / 230V / 50Hz
230V / 50-60Hz
110V / 50-60Hz
Heavy oil
E Electronic cam
EV Electronic cam with variable speed (with Inverter)
P Proportional air/gas valve
BP Two stage (light oil) / Proportional valve (gas)
M Mechanical cam
S
L
LS
N
Head: TC Standard head
TL Long head
Emission:
Class 2 EN267 - Class 3 EN676
C11 or... Class 1 EN267 - EN676
C33 or BLU Class 3 EN267 - EN676
C23 or MX
C13 Class 1 EN267 - Class 3 EN676
C22 or... Class 2 EN267 - EN676

9 20081825
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Technical description of the burner
4.2 Models available
Tab. A
4.3 Burner categories - Countries of destination
Tab. B
Designation Voltage Start-up Code
RLS 310/E MX 3/400/50 Star/Triangle 20082946 3/230/50 Direct 20087643
3/400/50 Direct 20087644
RLS 410/E MX 3/400/50 Star/Triangle 20084376 3/230/50 Direct 20087645
3/400/50 Direct 20087646
RLS 510/E MX 3/400/50 Star/Triangle 20083562
RLS 610/E MX 3/400/50 Star/Triangle 20080180
Gas category Destination country
I2H SE - FI - AT - GR - DK - ES - GB - IT - IE - PT - IS - CH - NO
I2ELL DE
I2L NL
I2Er FR
I2E(R)B BE
I2E LU - PL

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Technical description of the burner
4.4 Technical data
Tab. C
(1) Reference conditions: Ambient temperature 20°C - Gas temperature 15°C - Barometric pressure 1013 mbar - Altitude 0 m a.s.l.
(2) Pressure at the test point of the pressure switch 5)(Fig. 5 on page 15) with zero pressure in the combustion chamber and at maximum burner
output.
(3) Sound pressure measured in manufacturer's combustion laboratory, with burner operating on test boiler and at maximum rated output. The sound
power is measured with the “Free Field” method, as per EN 15036, and according to an accurate “Accuracy: Category 3”, as described by EN ISO
3746”.
Model RLS 310/E MX RLS 410/E MX RLS 510/E MX RLS 610/E MX
Type 1161T1 1162T1 1163T1 1164T1
Power(1)
Delivery (1) min - max kW Kg/h 600/1200 - 3600 50/100 - 305 640/ 1500 - 4200 55/126 - 352 660/1800 - 5170 56/195 - 435 1000/2200 - 6155 110/185 - 516
Fuels Natural gas: G20 (methane gas) - G21 - G22 - G23 - G25
Light oil, max. viscosity at 20 °C: 6 mm2/s (1.5°E - 6 cSt)
Gas pressure at max. output (2)
Gas: G20/G25 mbar 31.8/47.4 47.3/70.6 47.8/71.3 68.2/101.8
Operation FS1: Intermittent (min. 1 stop in 24 hours)
Pump
Minimum output at 16.5 bar
Pressure range kg/h bar
TA 3
700
7/40
TA 4
930
7/40
TA 5
1270
7/30
Fuel temperature °c max 140
Nozzles number 1
Standard applications Boilers: water, steam, diathermic oil
Ambient temperature °C 0 - 50
Combustion air temperature °C max 60
Noise level (3)
Sound pressure
Sound power dB(A) 78 89 80 91 82.5 93,5 85 96

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Technical description of the burner
4.5 Electrical data
Tab. D
Tab. E
DIRECT START UP
Model RLS 310/E MX RLS 410/E MX RLS 310/E MX RLS 410/E MX
Main electrical supply 3 ~ 230V +/-10% 50 Hz 3N ~ 400V +/-10% 50 Hz
Fan motor IE2
rpm
V
kW
A
2900
230/400
7.5
23.9 - 13.8
2920
230/400
9.2
29,3- 16,9
2900
230/400
7.5
23.9 - 13.8
2920
230/400
9.2
29.3 - 16.9
Ignition transformer V1 - V2
I1 - I2 230 V - 2 x 5 kV 1.9 A - 35 mA
Absorbed electrical power
Gas
Light oil kW max 9.1
10.9 10.8 12.6 9.1 10.9 10.8 12.6
Protection level IP 54
STAR - TRIANGLE START UP
Model RLS 310/E MX RLS 410/E MX RLS 510/E MX RLS 610/E MX
Main electrical supply 3N ~ 400V +/-10% 50 Hz
Fan motor IE2
rpm
V
kW
A
2900
400/690
7.5
13.8 - 8
2920
400/690
9.2
16.9 - 9.7
2880
400/690
12
21.2 - 12.2
2920
400/690
15
27 - 15,6
Pump motor rpm
V
kW
A
2870
220 - 380
1.5
5.9 - 3.4
Ignition transformer V1 - V2
I1 - I2 230 V - 2 x 5 kV 1.9 A - 35 mA
Absorbed electrical power
Gas
Light oil kW max 9.1 10.9 10.8 12.6 14 15.8 17 18.8
Protection level IP 54
DIRECT START UP
Model RLS 310/E MX RLS 410/E MX RLS 310/E MX RLS 410/E MX
Main electrical supply 3 ~ 230V +/-10% 50 Hz 3 ~ 400V +/-10% 50 Hz
Fan motor IE3
rpm
V
kW
A
2900
230/400
7.5
24 - 14
2920
230/400
9.2
28,6 - 16,5
2900
230/400
7.5
24 - 14
2920
230/400
9.2
28,6 - 16,5
Absorbed electrical power
Gas
Light oil kW max 9.1 10.9 10.6 12.4 9.1 10.9 10.6 12.4
STAR - TRIANGLE START UP
Model RLS 310/E MX RLS 410/E MX RLS 510/E MX RLS 610/E MX
Main electrical supply 3 ~ 400V +/-10% 50 Hz
Fan motor IE3
rpm
V
kW
A
2920
400/690
7.5
14 - 8,1
2880
400/690
9.2
16,8 - 9,7
2880
400/690
12
21,8 - 12,6
2880
400/690
15
27 - 15,6
Absorbed electrical power
Gas
Light oil kW max 8.8
10.6 10.6 12.4 13.9 15.7 16.9 18.7

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Technical description of the burner
4.6 Burner weight
The weight of the burner complete with its packaging is shown in
Tab. F on page 12.
Tab. F
4.7 Maximum dimensions
ThemaximumdimensionsoftheburneraregiveninFig. 2onpage 12.
Bear in mind that inspection of the combustion head requires the
burner to be opened and the rear part turned on the hinge.
The maximum dimensions of the open burner are indicated by
the L and R positions.
The l position is reference for the refractory thickness of the boiler
door.
Tab. G
Model kg
RLS 310/E MX 300
RLS 410/E MX 300
RLS 510/E MX 300
RLS 610/E MX 320
Fig. 1
20086678
WARNING
*The gas adaptor is set also for DN 80 bore.
Fig. 2
20086680
mm A B C D E F* G H I L M N O R
RLS 310/E MX 1190 507 178 313 520 DN65 490 790 340 1015 576 528 290 890
RLS 410/E MX 1190 507 178 313 520 DN65 508 790 340 1015 576 528 290 890
RLS 510/E MX 1190 507 178 313 520 DN65 508 790 340 1015 576 528 290 890
RLS 610/E MX 1190 510 178 334 520 DN65 580 790 360 1015 576 528 290 890

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Technical description of the burner
4.8 Firing rates
The MAXIMUM OUTPUT is chosen from within the diagram area
(Fig. 3 on page 13).
The MINIMUM OUTPUT must not be lower than the minimum
limit of the diagram:
Tab. H
Model kW
RLS 310/E MX 600
RLS 410/E MX 640
RLS 510/E MX 660
RLS 610/E MX Gas 1000
RLS 610/E MX Light oil 1300
WARNING
The firing rate value (Fig. 3 on page 13) has been
obtained considering an ambient temperature of
20 °C, an atmospheric pressure of 1013 mbar (ap-
prox. 0 m a.s.l.), and with the combustion head
adjusted as shown on page 27.
WARNING
Pre-calibration of the combustion head only for
the burner model RLS 310/E MX:
If the maximum burner output of the burner falls
within:
- area A of the firing rate, it is necessary to replace
the gas nozzles with those supplied (No. 8 gas
nozzles Ø 5,3), Fig. 19 on page 26.
- area B of the firing rate, no modifications are re-
quired.
Pressure in
combustion head - mbar
20096600
Pressure in
combustion head - mbar
Thermal power – kW
Thermal power – kW
RLS 310/E MX
RLS 410/E MX
RLS510/E MX
Firing rate light oil - RLS 610/E MX
RLS 610/EMX
Fig. 3

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Technical description of the burner
4.9 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. 4 on page 14).
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 manufac-
turer.
The firing rates were set in relation to special test boilers, accord-
ing to EN 676 regulations.
In Fig. 4 on page 14 you can see the diameter and length of the
test combustion chamber.
Example: RLS 510/E MX
Output 5000 kW - diameter 100 cm - length 5 m
4.10 Burner equipment
Gasket for gas train adaptor. . . . . . . . . . . . . . . . . . . . . . . . No. 1
Adaptor for gas train. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Screws for fixing the gas train adaptor: M 16 x 70. . . . . . . No. 4
Thermal insulation screen . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
M 18 x 60 screws to secure the burner flange
to the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
Flexible hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 2
Hydraulic fittings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 2
Cable grommets kit for optional electrical wiring input. . . . No. 1
M16 nuts to fix the gas elbow to the pipe coupling . . . . . . No. 4
Stud bolts M16X70 to fix the gas elbow
to the pipe coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
Gas nozzles (only for version RLS 310/E MX). . . . . . . . . . No. 8
Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Spare parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
20057548 Fig. 4
Combustion chamber
m

15 20081825
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Technical description of the burner
4.11 Burner description
1 Lifting rings
2Fan
3Fanmotor
4 Air damper servomotor
5 Combustion head gas pressure test point
6 Combustion head
7 Ignition electrodes
8 Flame stability disk
9 Electrical panel casing
10 Gas butterfly valve and oil modulator servomotor
11 Fan air inlet
12 Pipe coupling
13 Gasket for boiler fixing
14 Gas butterfly valve
15 Shutter
16 Combustion head movement screw
17 Lever for controlling the dampers with graduated scale
18 Air pressure switch
19 Oil modulator
20 Maximum gas pressure switch with pressure test point
21 Valve group
22 Hinge for opening the burner
23 Pressure test point for air pressure switch “+”
24 Combustion head air pressure test point
25 Gas train adapter
26 Indication for checking the rotation direction of the purging
motor
27 Flame inspection window
28 Flame sensor
29 Reset button
30 Transparent protection
31 Pump
32 Pump motor
33 Minimum oil pressure switch
34 Maximum oil pressure switch
35 Nozzle return pressure gauge
36 Nozzle delivery pressure gauge
Fig. 5
20086686
ASSEMBLY VIEW
The burner can be opened to the right or to the left
without links to the fuel supply side.
WARNING
To open the burner see section “Access to head
internal part” on page 26.

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Technical description of the burner
4.12 Electrical panel description
1 Electrical control box
2 ON/OFF selector
3 Output power regulator (if present)
4 Earth terminal
5 Supply cables and external connections passage. See sec-
tion “Electrical wiring” on page 35
6 Bracket for applying the kits
7 Main terminal supply board
8 Relay with clean contacts for signalling the burner is in lock-
out and that the burner is operating
9 Fuel selection timers
10 Auxiliary circuits fuse (includes a spare fuse)
11 Air pressure switch
12 Ignition transformer
13 Valve group terminal board
14 Operator panel with LCD display
15 Light signalling burner lockout
16 Reset button
17 Direct start up line contactor
18 Star/triangle start-up line contactor
19 Thermal relay (with RESET button)
20 Triangle contactor (Star/triangle start up)
21 Star contactor (Star/triangle start up)
22 Auxiliary contacts
23 Timer for star/triangle start up
24 Pump motor thermal relay (with RESET button)
25 Pump motor contact maker
26 Fuel selection relay
27 Change of fuel selector
28 Fan motor cables sheath
29 Flame sensor sheath
30 Fuel servomotor sheath
31 Maximum gas pressure switch sheath
32 Air servomotor sheath
33 Safety valve sheath (VS1)
34 Return line valve sheath (VR)
35 Working valve sheath (VF)
36 Safety valve sheath (VS)
37 Minimum oil pressure switch sheath
38 Maximum oil pressure switch sheath
39 Pump motor cables sheath
17
19
2
6
14
12
4
4
527
1
11
7
4
19
23
22
20
21
18
15
16
3
13
5
4
4
28
29
30
31
32
33
34
35
36
37
38
39
26 8
9
25
24
10
Fig. 6
20095670
20096208
VIEW A
A

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Technical description of the burner
4.13 Control box for the air/fuel ratio (LMV 26...)
Warnings
The control box is a system to check the burners, based on a mi-
croprocessor and equipped with components to adjust and su-
pervise medium and large capacity forced draught burners.
The control box contains the following components:
– burner management system with valve leak detection control
device;
– electronic device to check the fuel/air ratio with a maximum
of 2 actuators;
– Modbus interface.
All interventions (assembly and installation operations,
assistance, etc.) must be carried out by qualified personnel.
Before carrying out any checks on the wiring, fully isolate the
system from the electric mains (omnipolar separation).
Check the system is not powered and cannot be accidentally
reconnected. Failure to do this will lead to the risk of electro-
cution.
Protection against electrocution from the control box and all
connected electric components is obtained with the correct
assembly.
After every intervention (assembly and installation opera-
tions, assistance, etc.), ensure the wiring is in order and that
the parameters are correctly set, then perform the safety
checks.
Falls and collisions can negatively affect the safety func-
tions. In this case, the control box must not be operated,
even if it displays no evident damage.
During the programming of the air-fuel ratio control curves,
the technician should constantly observe the quality of the
combustion process (for example using a gas analyser) and,
in the event of inadequate combustion values or dangerous
conditions, should take appropriate action, for example shut-
ting down the system manually.
The plugs of the connection cables or other accessories can
be disconnected when the system has been switched off.
The connections to the actuators do not provide a secure
separation from the mains voltage. Before connecting or
changing the actuators the system should be off to avoid any
conditions that could cause the formation of condensation or
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.
Static charges must be avoided since they can damage the
control box’s electronic components when touched.
WARNING
To avoid accidents, material and/or environmental
damage, observe the following instructions!
The control box is a safety device! Avoid opening
or modifying it, or forcing its operation. Riello
S.p.A. cannot assume any responsibility for dam-
age resulting from unauthorised interventions!
Risk of explosion!
An incorrect configuration can provoke fuel over-
charging, with the consequential risk of explosion!
The operators must be aware that the incorrect
setting of the visualisation and operation control
box, and of the positions of the fuel and/or air ac-
tuators, can cause dangerous conditions during
burner operation.
WARNING
For the safety and reliability of the control box,
comply with the following instructions:
Fig. 7
S8163

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Technical description of the burner
Technical data
Tab. I
Control box Mains voltage AC 230 V -15% / +10%
Mains frequency 50 / 60 Hz ±6%
Power absorption < 30 W
Safety class I, with components in compliance with II and III, ac-
cording to DIN EN 60730-1
Load on ‘input’
terminals Fuse on the control box (can be inspected) 6.3 AT
Undervoltage
– Safety switch-off from operating position to mains
voltage
– Restart when mains voltage picks up
< AC 190 V
> AC 195 V
Cable length – Main line AC 230 V
– Control load (TL1-TL2)
– External reset button (RS)
– Load exit (DC 0/2...10V)
– Fuel valve
– Other lines
Max. 100 m (100 pF / m)
Max. 20 m (100 pF/m)
Max 20 m (100 pF/m)
Max. 10 m (100 pF/m)
Max. 3 m (100 pF/m)
Max. 3 m (100 pF/m)
Environmental
conditions Storage – Climatic conditions
– Mechanical conditions
– Temperature range
– Humidity
DIN EN 60721-3-1
Class 1K3
Class 1M2
-20 ... +60 °C
< 95% RH
Transport
– Climatic conditions
– Mechanical conditions
– Temperature range
– Humidity
DIN EN 60721-3-2
Class 2K2
Class 2M2
-30 ... +60 °C
< 95% RH
Operation
– Climatic conditions
– Mechanical conditions
– Temperature range
– Humidity
DIN EN 60721-3-3
Class 3K3
Class 3M3
-20 ... +60 °C
< 95% RH
WARNING
Condensation, the formation of ice and the entry
of water are prohibited!