Riello RS 300/M BLU Quick start guide

Installation, use and maintenance instructions
20041790 (10) - 02/2016
Forced draught gas burners
Modulating operation
CODE MODEL TYPE
3899410 RS 300/M BLU 849T
3899510 RS 400/M BLU 850T
3899110 RS 500/M BLU 856T
20006131 RS 500/M BLU 856T80
20040330 RS 650/M BLU 1123T
3911010 RS 800/M BLU 887T
20008894 RS 800/M BLU 887T80
GB

Translation of the original instructions

1
20041790
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Contents
1 Declarations................................................................................................................................................................................ 3
2 Information and general warnings............................................................................................................................................ 4
2.1 Information about the instruction manual.................................................................................................................... 4
2.1.1 Introduction.................................................................................................................................................................. 4
2.1.2 General dangers.......................................................................................................................................................... 4
2.1.3 Other symbols ............................................................................................................................................................. 4
2.1.4 Delivery of the system and the instruction manual...................................................................................................... 5
2.2 Guarantee and responsibility....................................................................................................................................... 5
3 Safety and prevention................................................................................................................................................................ 6
3.1 Introduction.................................................................................................................................................................. 6
3.2 Personnel training ....................................................................................................................................................... 6
4 Technical description of the burner......................................................................................................................................... 7
4.1 Burner designation...................................................................................................................................................... 7
4.2 Models available.......................................................................................................................................................... 7
4.3 Burner categories - Countries of destination............................................................................................................... 8
4.4 Technical data............................................................................................................................................................. 8
4.5 Electrical data.............................................................................................................................................................. 9
4.6 Maximum dimensions................................................................................................................................................ 10
4.7 Firing rates ................................................................................................................................................................ 11
4.8 Test boiler.................................................................................................................................................................. 12
4.9 Burner equipment...................................................................................................................................................... 12
4.10 Burner description..................................................................................................................................................... 13
4.11 Electrical panel description........................................................................................................................................ 14
4.11.1 Fan motor rotation..................................................................................................................................................... 14
4.12 RMG88.62C2 control box.......................................................................................................................................... 15
4.13 LKS 310-35 servomotor ............................................................................................................................................ 16
5 Installation ................................................................................................................................................................................ 17
5.1 Notes on safety for the installation............................................................................................................................ 17
5.2 Handling.................................................................................................................................................................... 17
5.3 Preliminary checks.................................................................................................................................................... 17
5.4 Operating position ..................................................................................................................................................... 18
5.5 Removal of the locking screws from the shutter........................................................................................................ 18
5.6 Preparing the boiler................................................................................................................................................... 18
5.6.1 Boring the boiler plate ............................................................................................................................................... 18
5.6.2 Blast tube length........................................................................................................................................................ 18
5.7 Securing the burner to the boiler............................................................................................................................... 19
5.8 Access to head internal part...................................................................................................................................... 19
5.9 Probe-electrode position ........................................................................................................................................... 19
5.10 Combustion head adjustment.................................................................................................................................... 20
5.11 Gas feeding............................................................................................................................................................... 22
5.11.1 Gas feeding line ........................................................................................................................................................ 22
5.11.2 Gas train.................................................................................................................................................................... 23
5.11.3 Gas train installation.................................................................................................................................................. 23
5.11.4 Gas pressure............................................................................................................................................................. 24
5.12 Electrical wiring ......................................................................................................................................................... 25
5.12.1 Supply cables and external connections passage .................................................................................................... 25
6 Start-up, calibration and operation of the burner ................................................................................................................. 26
6.1 Notes on safety for the first start-up.......................................................................................................................... 26
6.2 Adjustments prior to ignition...................................................................................................................................... 26
6.3 Burner start-up .......................................................................................................................................................... 26
6.4 Burner ignition........................................................................................................................................................... 26

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Contents
6.5 Servomotor adjustment..............................................................................................................................................27
6.6 Air / fuel adjustment ...................................................................................................................................................27
6.6.1 Maximum output adjustment......................................................................................................................................27
6.6.2 Minimum output adjustment.......................................................................................................................................28
6.6.3 Intermediate output adjustment .................................................................................................................................28
6.7 Pressure switch adjustment.......................................................................................................................................29
6.7.1 Air pressure switch - check CO..................................................................................................................................29
6.7.2 Maximum gas pressure switch...................................................................................................................................29
6.7.3 Minimum gas pressure switch....................................................................................................................................29
6.8 Operation sequence of the burner .............................................................................................................................30
6.8.1 Burner start-up...........................................................................................................................................................30
6.8.2 Operation...................................................................................................................................................................30
6.8.3 Ignition failure.............................................................................................................................................................30
6.8.4 Burner flame goes out during operation.....................................................................................................................30
6.9 Burner start-up cycle diagnostics...............................................................................................................................31
6.9.1 Resetting of control box and diagnostics use ............................................................................................................31
6.9.2 Control box reset........................................................................................................................................................31
6.9.3 Visual diagnostics ......................................................................................................................................................31
6.9.4 Software diagnostics..................................................................................................................................................31
6.10 Normal operation / flame detection time ....................................................................................................................32
7 Maintenance ..............................................................................................................................................................................33
7.1 Notes on safety for the maintenance .........................................................................................................................33
7.2 Maintenance programme...........................................................................................................................................33
7.2.1 Maintenance frequency..............................................................................................................................................33
7.2.2 Checking and cleaning...............................................................................................................................................33
7.3 Opening the burner....................................................................................................................................................34
7.4 Closing the burner......................................................................................................................................................34
8 Faults - Probable causes - Solutions......................................................................................................................................35
A Appendix - Accessories ...........................................................................................................................................................37
B Appendix - Electrical panel layout...........................................................................................................................................39

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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: Forced draught gas burners
Model: RS 300/M BLU
RS 400/M BLU
RS 500/M BLU
RS 650/M BLU
RS 800/M BLU
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
Such products are marked as follows: EC-0085BR0480 RS 300/M BLU
EC-0085BR0481 RS 300/M BLU
EC-0085BO0341 RS 500/M BLU
EC-0085BT0337 RS 650/M BLU
EC-0085BT0337 RS 800/M BLU
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
Forced draught gas burners 859T RS 300/M BLU 500 - 3800 kW
860T RS 400/M BLU 950 - 4590 kW
856T RS 500/M BLU 1000 - 5170 kW
856T80 RS 500/M BLU 1000 - 5170 kW
1123T RS 650/M BLU 1400 - 6500 kW
887T RS 800/M BLU 1200 - 8100 kW
887T80 RS 800/M BLU 1200 - 8100 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 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 is present. An explosive atmosphere is
defined as a mixture of dangerous substances
with air, under atmospheric conditions, in the form
of gases, vapours, mist or dust in which, after ig-
nition 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.
MOUNT CASING
This symbol indicates that it is mandatory to
mount casing again after maintenance, cleaning
or checks.
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.

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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 installa-
tion date, 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;
➤use of the burner even following an error and/or an irregular-
ity;
➤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;
➤the 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.

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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 users expressly named by the manufacturer;
the type and pressureof 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, he undertakes to ensure that everyone knows
the use and safety instructions for his own duties;
➤Personnel must observe all the danger and caution indica-
tions shown on the machine.
➤Personnel must not carry out, on their own initiative, opera-
tions or interventions that are not within their province.
➤Personnel must inform their superiors of every problem or
dangerous situation that may arise.
➤The assembly of parts of other makes, or any modifications,
can alter the characteristics of the machine and hence com-
promise operating safety. The manufacturer therefore
declines any and every responsibility for any damage that
may be caused by the use of non-original parts.
In addition:
3 Safety and prevention
WARNING
The manufacturer guarantees safety and proper
functioning only if all burner components are intact
and positioned correctly.
➤the user must take all the measures neces-
sary to prevent 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.

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Technical description of the burner
4.1 Burner designation
4.2 Models available
Tab. A
4 Technical description of the burner
Designation Voltage Start-up Code
RS 300/M BLU 3/400/50 Direct 3899410
RS 400/M BLU 3/400/50 Star/Delta 3899510
RS 500/M BLU 3/400/50 Star/Delta 3899110
RS 500/M BLU 3/380/60 Star/Delta 20006131
RS 650/M BLU 3/400/50 Star/Delta 20040330
RS 800/M BLU 3/400/50 Star/Delta 3911010
RS 800/M BLU 3/380/60 Star/Delta 20008894
Class 3 EN267 - Class 3 EN676
Range: R
Size
Fuel: Natural gas
Light oil
Light oil / Methane
Adjustment:
Flame control system:
FS1
FS2 Standard (1 stop every 24h) Continuous operation (1 stop every 72h)
Electrical supply of the system:
3/400/50
3/230/50
Voltage of auxiliaries:
230/50/60
110/50/60
R S 300 M TC
Emission: C11 or... Class 1 EN267 - EN676
C11 or MZ Class 2 EN267 - EN676
C33 or BLU Class 3 EN267 - EN676
FS1 3/400/50 230/50/60
BASIC DESIGNATION
EXTENDED DESIGNATION
BLU
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
C11 or...
C13 Class 1 EN267 - Class 3 EN676

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Technical description of the burner
4.3 Burner categories - Countries of destination
Tab. B
4.4 Technical data
Tab. C
Tab. D
(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 (20)(Fig. 4) 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 evaluated, in line with the regulations, on a spherical surface centred on the burner and with a radius of 1 metre.
Gas category Destination country
I
2H
SE - FI - AT - GR - DK - ES - GB - IT - IE - PT - IS - CH - NO
I
2ELL
DE
I
2L
NL
I
2Er
FR
I
2E(R)B
BE
I
2E
LU - PL
Model RS 300/M BLU RS 400/M BLU RS 500/M BLU RS 650/M BLU RS 800/M BLU
Type 859T 860T 856T 1123T 887T
Power
(1)
Output
(1)
min - max kW 500/1350 ÷ 3800 950/1830 ÷ 4590 1000/2500 ÷ 5170 1410/3020 ÷ 6500 1200/3500 ÷ 8100
Fuels Natural gas: G20 (methane gas) - G21 - G22 - G23 - G25
Gas pressure at max. output
(2)
-
Gas: G20/G25 mbar 23.3/32.7 34.3/40.2 37.6/56.1 44.8/64.4 45.5/81.2
Operation Intermittent
Standard applications Boilers: water, steam, diathermic oil
Ambient temperature °C 0 - 40
Combustion air temperature °C max 60
Burner weight Kg 225 236 250 300 300
Noise levels
(3)
Sound pressure
Sound power dB(A) 82 93 85 96 88 99 90,1 101,1 88,1 99,1
Model RS 500/M BLU RS 800/M BLU
Type 856T80 887T80
Power
(1)
Output
(1)
min - max kW 1000/2500 ÷ 5170 1200/3500 ÷ 8100
Fuels Natural gas: G20 (methane gas) - G21 - G22 - G23 - G25
Gas pressure at max. output
(2)
-
Gas: G20/G25 mbar 37.6/56.1 45.5/81.2
Operation Intermittent
Standard applications Boilers: water, steam, diathermic oil
Ambient temperature °C 0 - 40
Combustion air temperature °C max 60
Burner weight Kg 250 300
Noise levels
(3)
Sound pressure
Sound power dB(A) 88 99 88,1 99,1

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Technical description of the burner
4.5 Electrical data
Tab. E
Tab. F
Tab. G
Model RS 300/M BLU RS 400/M BLU RS 500/M BLU RS 650/M BLU RS 800/M BLU
Type 859T 860T 856T 1123T 887T
Main electrical supply 3N ~ 400 / 230V +/-10% 50 Hz
Fan motor IE2
rpm
V
kW
A
2900
230/400
4.5
15/8.7
2900
400/690
7.5
13.8/8
2920
400/690
9.2
16.9/9.7
2935
400/690
18.5
33.3/19.2
2935
400/690
22
38.6/22.3
Ignition transformer V1 - V2
I1 - I2 230 V - 1 x 8 kV 1 A - 20 mA
Absorbed electrical power kW max 5 8 10 19 23
Protection level IP 54
Model RS 500/M BLU RS 800/M BLU
Type 856T80 887T80
Main electrical supply 3N ~ 380 / 220V +/-10% 60 Hz
Fan motor IE2
rpm
V
kW
A
3510
380/660
9.2
18.3/10.6
3550
380/660
22
42.5/24.5
Ignition transformer V1 - V2
I1 - I2 230 V - 1 x 8 kV 1 A - 20 mA
Absorbed electrical power kW max 10 23
Protection level IP 54
Model RS 400/M BLU RS 500/M BLU RS 650/M BLU RS 800/M BLU
Type 860T 856T 1123T 887T
Main electrical supply 3N ~ 400 / 230V +/-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
18.5
32.2/18.6
2880
400/690
22
38.2/22.3
Ignition transformer V1 - V2
I1 - I2 230 V - 1 x 8 kV 1 A - 20 mA
Absorbed electrical power kW max 8.8 10.6 20.5 24
Protection level IP 54

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Technical description of the burner
4.6 Maximum dimensions
The maximum dimensions of the burner are shown in Fig. 1.
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. H
Fig. 1
20065526
mm A B C D E F G H I L R
RS 300/M BLU 1325 521 164 313 588 DN65 720 867 373 1175 1055
RS 400/M BLU 1325 521 164 313 588 DN65 775 867 373 1175 1055
RS 500/M BLU 1325 521 164 370 588 DN65 775 867 357 1175 1055
RS 650/M BLU 1325 549 164 363 588 DN80 940 867 397 1175 1055
RS 800/M BLU 1325 582 164 363 588 DN80 940 867 418 1175 1055

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Technical description of the burner
4.7 Firing rates
The MAXIMUM OUTPUT is chosen from within the diagram area
(Fig. 2).
The MINIMUM OUTPUT must not be lower than the minimum
limit of the diagram:
Model kW
RS 300/M BLU 500
RS 400/M BLU 950
RS 500/M BLU 1000
RS 650/M BLU 1400
RS 800/M BLU 1200
WARNING
The firing rate value (Fig. 2) has been obtained
considering an ambient temperature of 20C, an
atmospheric pressure of 1013 mbar (approx. 0 m
a.s.l.), and with the combustion head adjusted as
shown on page 20.
Thermal power – kW
400 1200 2000 2800 3600 4400
0
2
4
6
8
10
12
14
16
18
20
mbar
22
24
5200 6000 6800 7600 8400
25
26
Fig. 2
Thermal power – kW
Combustion chamber
pressure - mbar
RS 500/M
RS 800/M
D8128
D11748
Combustion chamber
pressure - mbar
400 800 1200 1600 2000 2400 2800 3200 3600 4000 4400 4800
0
2
4
6
8
10
12
14
16
18
5200 5600 6000 6400 6800
RS 400/M
RS 300/M
RS 650/M

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Technical description of the burner
4.8 Test boiler
The burner/boiler combination does not pose any problems if the
boiler is EC approved and its combustion chamber dimensions
are similar to those indicated in the diagram (Fig. 3).
If the burner must be combined with a boiler that has not been EC
approved and/or its combustion chamber dimensions are clearly
smaller than those indicated in the diagram, consult the manufac-
turer.
The firing rates were obtained in special test boilers, according to
EN 676 regulations.
In Fig. 3 you can see the diameter and length ofthe test combus-
tion chamber.
Example: RS 800/M BLU
Output 7000 kW - diameter 120 cm - length 6 m.
4.9 Burner equipment
Gasket for gas train adaptor. . . . . . . . . . . . . . . . . . . . . . . . No. 1
M16 x 70 Screws to fix the gas train adaptor. . . . . . . . . . . No. 8
Thermal insulation screen . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
M 18 x 60 screws to secure the burner flange to the boiler No. 4
Cable grommets kit for optional electrical wiring input. . . . No. 1
M16 x 67 stud bolts to fix the gas elbow to the
pipe coupling (for RS 650-800/M BLU only). . . . . . . . . . . . No. 8
M16 nuts to fix the gas elbow to the pipe coupling
(for RS 650-800/M BLU only). . . . . . . . . . . . . . . . . . . . . . . No. 8
Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Spare parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Fig. 3
Combustion chamber
m
D2448

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Technical description of the burner
4.10 Burner description
1 Lifting rings
2 Fan
3 Fan motor
4 Air damper servomotor
5 Combustion head gas pressure test point
6 Combustion head
7 Ignition electrode
8 Flame stability disc
9 Electrical panel casing
10 Hinge for opening the burner
11 Fan air inlet
12 Pipe coupling
13 Gasket for boiler fixing
14 Gas inlet flange
15 Shutter
16 Combustion head movement lever
17 Air damper movement gears
18 Air pressure switch
19 Combustion head air pressure test point
20 Maximum gas pressure switch with pressure test point
21 Flame sensor probe
22 Pressure test point for air pressure switch “+”
23 Pressure test point for air pressure switch “-”
(for RS 300-400-500/M BLU only)
24 Gas butterfly valve control lever
25 Adjustable profile cam
26 Air damper control lever
Fig. 4
20065519
CAUTION
The burner can be opened to the right or to the left
without links to the fuel supply side.
When the burner is closed, the hinge can be refit-
ted on the opposite side.

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Technical description of the burner
4.11 Electrical panel description
1 Terminal board for kits
2 Clean contacts output relay
3 Ignition transformer
4 Bracket for application of output power regulator kit RWF40
5 Stop push-button
6 OFF-automatic-manual selector
7 Power increase - power reduction selector
8 Light signalling start-up enabling
9 Light signalling of motor thermal relay operation
10 Light signalling of burner lockout and reset switch
11 Electrical control box
12 Star-triangle starter (except for RS 300/M BLU)
13 Timer (except for RS 300/M BLU)
14 Air pressure switch
15 Main terminal supply board
16 Supply cables and external connections passage
17 Bracket for application of UV sensor kit
18 Auxiliary circuits fuse
19 Plug/socket servomotor
20 Relay
21 Thermal relay
NOTE
Two types of burner lockout may occur:
➤Control box lockout: if the control box button (red led) 11)
Fig. 5) and the backlit button 10) light up, it indicates that the
burner is in lockout.
Release by pressing the pushbutton 10).
➤Motor lockout: release by pressing the button on thermal
relay.
4.11.1 Fan motor rotation
Place in front of the cooling fan of the fan motor and check that it
turns anticlockwise.
Fig. 5
11
18
5
789
10
4
12
20 15
1
21
19
16 6
16
13
17 23
14
1
11
4
10
9
8
7
6
5
15
16
13
12
16
19
18
16
21
20
D3101
RS 650/M BLU
RS 800/M BLU RS 300/M BLU
RS 400/M BLU
RS 500/M BLU

15
20041790
GB
Technical description of the burner
4.12 RMG88.62C2 control box
Warnings
➤All interventions (assembly and installation operations,
assistance, etc.) must be carried out by qualified personnel.
➤Before modifying the wiring in the control box connection
area, fully disconnect the system from the power supply
(omnipolar separation). Check the system is not powered
and cannot be accidentally reconnected. Failure to do this
will lead to the risk of electrocution.
➤Protection against electrocution from the control box and all
connected electric components is obtained with the correct
assembly.
➤Before any intervention (assembly and installation opera-
tions, assistance, etc.), ensure the wiring is in order and that
the parameters are correctly set, then make the safety
checks.
➤Falls and collisions can negatively affect the safety func-
tions.
In this case, the control box must not be operated, even if it
displays no evident damage.
➤Press the reset button of the burner lockout command or the
reset button (by applying a force of not more than 10 N),
without the aid of tools or sharp objects.
For the safety and reliability of the control box, comply with the
following instructions:
– avoid conditions that can favour the development of conden-
sate 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.
Installation notes
• Check the electric wiring inside the boiler complies with the na-
tional and local safety regulations.
• Ensure that spliced wires cannot get into contact with neigh-
bouring terminals. Use adequate ferrules.
• The actuator execution times must correspond to the burner
control program. An additional safety control of the burner with
the actuators is needed.
• Make sure the cable grommets of the connected cables com-
ply with the relevant standards.
• Arrange the H.V. ignition cables separately, as far as possible
from the control box and the other cables.
• Phase and neutral must not be swapped over (danger of fire,
operating defects, loss of protection against electric shock,
etc.).
Technical data
Tab. I
Mechanical structure
The control box is made of plastic to resist knocks, heat and
flame propagation.
The control box contains the following components:
• a microprocessor that controls the program sequence, and a
relay for controlling the load
• an electronic flame signal amplifier
• a built-in reset button with 3 signalling colours (LED) for status
and error messages
WARNING
To avoid accidents, material or environmental
damage, observe the following instructions!
The RMG88.62C2 control box is a safety device!
Avoid opening or modifying it, or forcing its opera-
tion. Riello S.p.A. cannot assume any responsibil-
ity for damage resulting from unauthorised
interventions!
Mains voltage AC 110...120 V +10 % / -15 %
Mains frequency 50 / 60 Hz ±6 %
Power absorption 20 VA
Protection level IP20
Safety class I
Weight approx. 260 g
Cable length
Thermostat cable
Air pressure switch
Gas pressure switch
Remote reset
CPI
Max. 20 m at 100 pF/m
Max. 1 m at 100 pF/m
Max. 20 m at 100 pF/m
Max. 20 m at 100 pF/m
Max. 1 m at 100 pF/m
Environmental conditions:
Operation
Climatic conditions
Mechanical conditions
Temperature range
Humidity
DIN EN 60721-3-3
Class 3K3
Class 3M3
-20...+60°C
< 95 % r.h.
Fig. 6
S8906

20041790
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GB
Technical description of the burner
4.13 LKS 310-35 servomotor
Warnings
➤All interventions (assembly and installation operations,
assistance, etc.) must be carried out by qualified personnel.
➤Falls and collisions can negatively affect the safety func-
tions. In this case, the servomotor must not be operated,
even if it displays no evident damage.
➤Fully disconnect the servomotor from the mains when work-
ing near terminals and connections.
➤Condensation and exposure to water are not allowed.
Assembly notes
• Check the relevant national safety standards are respected.
• For safety reasons, the servomotor must be checked after
long periods of non-use.
Installation notes
• To avoid the risk of electrocution, fix the cover and all electri-
cal wiring correctly.
• Check the wiring is in order.
• Arrange the H.V. ignition cables separately, as far as possi-
ble from the control box and the other cables.
• Electromagnetic emissions must be checked on an applica-
tion-specific basis
•
Technical data
Tab. J
WARNING
To avoid accidents, material or environmen-
tal damage, observe the following instruc-
tions!
Avoid opening, modifying or forcing the ac-
tuators.
Mains voltage 230 V -15% +10%
Mains frequency 50 / 60 Hz
Power absorption 7 ... 15 VA
Motor Reversible synchronous
Clutch Red lever, separates gears
from motor
Drive angle 90°
Protection level IP54, with appropriate cable entry
Cable entry 2 x PG11
Cable connection terminal board for 0.5mm
2
(min.)
and 2.5mm
2
(max.)
Rotation direction Clockwise
Rated torque (max.) 15 Nm
Holding torque 10 Nm
Operation time 30 s.
Weight approx. 1.8 kg
Environmental conditions:
Operation
Transport and storage 0....+60° C -20...+60°C
Fig. 7
S8421

17
20041790
GB
Installation
5.1 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 environ-
ment, proceed with the installation operations.
5.2 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.
5.3 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 pos-
sibilities (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).
5 Installation
DANGER
All the installation, maintenance and disassembly
operations must be carried out with the electricity
supply disconnected.
WARNING
The installation of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
DANGER
Combustion air inside the boiler must be free from
hazardous mixes (e.g.: chloride, fluoride, halo-
gen); if present, it is highly recommended to carry
out cleaning and maintenance more frequently.
WARNING
The handling operations for the burner can be
highly dangerous if not carried out with the great-
est 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 quick-
ly move if the burner should fall).
When handling, keep the load at not more than
20-25 cm from the ground.
After positioning the burner near the installation
point, correctly dispose of all residual packaging,
separating the various types of material.
CAUTION
Before proceeding with the installation operations,
carefully clean all around the area where the burn-
er will be installed.
CAUTION
After removing all the packaging, check the integ-
rity of the contents. In the event of doubt, do not
use the burner; contact the supplier.
The packaging elements (wooden cage or card-
board 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, or any other component, that has
been tampered with, removed or is missing, pre-
vents the definite identification of the burner and
makes any installation or maintenance work diffi-
cult.
R.B.L.
GAS-KAASU
GAZ-AEPIO X
RIELLOS.p.A.
I-37045Legnago(VR)
A
D E BC
F
I
G H
G H
Fig. 8
D10411

20041790
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GB
Installation
5.4 Operating position
5.5 Removal of the locking screws from the shutter
5.6 Preparing the boiler
5.6.1 Boring the boiler plate
Pierce the closing plate of the combustion chamber, as in Fig. 11.
The position of the threaded holes can be marked using the ther-
mal insulation screen supplied with the burner.
5.6.2 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 refractory.
For boilers with front flue passes 1) (Fig. 12) or flame inversion
chamber, a protection in refractory material 5) must be inserted
between the boiler fettling 2) and the flame funnel 4).
This protection must not compromise the extraction of the blast
tube.
For boilers with a water-cooled frontpiece, a refractory lining 2)-
5) (Fig. 12) is not necessary, unless expressly requested by the
boiler manufacturer.
Tab. K
WARNING
➤ The burner is designed 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 cor-
rect operation of the appliance.
➤ Installation 5 is prohibited for safety reasons.
Fig. 9
2 3 4 51
D7739
WARNING
Remove the screws and the nuts 1)-2)(Fig. 10),
before installing the burner on the boiler.
Replace them with the screws 3) M12 X 25 sup-
plied with the burner.
1
2
1
2
3
3
Fig. 10
D12015
mm A B C
RS 300/M BLU 350 452 M18
RS 400/M BLU 350 452 M18
RS 500/M BLU 390 452 M18
RS 650/M BLU 400 495 M18
RS 800/M BLU 400 495 M18
Fig. 11
D455