Riello RS5 Quick start guide

Installation, use and maintenance instructions
安装 , 使用和维修说明书
20198379 (1) - 04/2022
Forced draught gas burner
强制通风燃气燃烧器
One stage operation
单段火运行
CODE - 编码 MODEL - 型号 TIPO - 类型
20198364 RS5 920T1
GB
CN

Translation of the original instructions
说明书原文翻译

1 20198379
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Index
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 Background ................................................................................................................................................................. 6
3.2 Personnel training ....................................................................................................................................................... 6
4 Technical description of the burner ......................................................................................................................................... 7
4.1 Burner designation ...................................................................................................................................................... 7
4.2 Models available.......................................................................................................................................................... 7
4.3 Technical data ............................................................................................................................................................. 8
4.4 Electrical data.............................................................................................................................................................. 8
4.5 Maximum dimensions.................................................................................................................................................. 9
4.6 Preparing the boiler ..................................................................................................................................................... 9
4.6.1 Boring the boiler plate ................................................................................................................................................. 9
4.7 Firing rate .................................................................................................................................................................. 10
4.8 Test boiler.................................................................................................................................................................. 10
4.8.1 Commercial boilers.................................................................................................................................................... 10
4.9 Burner description ..................................................................................................................................................... 11
4.10 Burner equipment...................................................................................................................................................... 11
4.11 Electrical control box ................................................................................................................................................. 12
4.12 Air damper opener..................................................................................................................................................... 13
5 Installation ................................................................................................................................................................................ 14
5.1 Notes on safety for the installation ............................................................................................................................ 14
5.2 Instructions to avoid burnout or bad combustion of the burner ................................................................................. 14
5.3 Handling .................................................................................................................................................................... 14
5.4 Preliminary checks .................................................................................................................................................... 15
5.5 Operating position ..................................................................................................................................................... 15
5.6 Securing the burner to the boiler............................................................................................................................... 16
5.7 Combustion head adjustment.................................................................................................................................... 17
5.7.1 Removing the head assembly................................................................................................................................... 17
5.7.2 Reassembling the head assembly ............................................................................................................................ 17
5.8 Positioning the probe - electrode............................................................................................................................... 18
5.9 Gas feeding ............................................................................................................................................................... 19
5.9.1 Gas feeding line ........................................................................................................................................................ 19
5.9.2 Train electrical supply................................................................................................................................................ 19
5.9.3 Gas train.................................................................................................................................................................... 20
5.9.4 Gas pressure............................................................................................................................................................. 20
5.10 Electrical wiring ......................................................................................................................................................... 21
5.11 Operating program .................................................................................................................................................... 22
5.12 Table of times............................................................................................................................................................ 22
5.12.1 Operating and fault status indication......................................................................................................................... 22
5.12.2 Control sequence in case of failure ........................................................................................................................... 23
5.12.3 Intermittent operation ................................................................................................................................................ 23
5.12.4 Presence of an extraneous light or parasite flame .................................................................................................... 23
5.12.5 Reset control box ...................................................................................................................................................... 23
5.12.6 Check the power supply voltage ............................................................................................................................... 23
5.12.7 Ionisation current....................................................................................................................................................... 23
6 Start-up, calibration and operation of the burner ................................................................................................................. 24
6.1 Notes on safety for the first start-up .......................................................................................................................... 24
6.2 Adjustments prior to ignition ...................................................................................................................................... 24

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Index
6.3 Gas pressure switch ..................................................................................................................................................24
6.4 Air pressure switch.....................................................................................................................................................24
6.5 Combustion adjustment .............................................................................................................................................24
7 Maintenance ..............................................................................................................................................................................25
7.1 Notes on safety for the maintenance .........................................................................................................................25
7.2 Maintenance programme ...........................................................................................................................................25
7.2.1 Maintenance frequency..............................................................................................................................................25
7.2.2 Safety test - with gas ball valve closed ......................................................................................................................25
7.2.3 Checking and cleaning...............................................................................................................................................25
7.2.4 Safety components ....................................................................................................................................................26
7.3 Opening the burner ....................................................................................................................................................26
8 Faults - Possible causes - Solutions.......................................................................................................................................27
8.1 Tracing the causes of the malfunctioning ..................................................................................................................27
8.1.1 Visual diagnostics ......................................................................................................................................................27
8.1.2 Software diagnostics..................................................................................................................................................27
A Appendix - Accessories ...........................................................................................................................................................31
B Electrical panel layout ..............................................................................................................................................................32

3 20198379
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Declarations
Declaration of Conformity in accordance with ISO / IEC 17050-1
These products are in compliance with the following Technical Standards:
• EN 12100
•EN676
According to the European Directives:
MD 2006/42/CE Machine Directive
LVD 2014/35/UE Low Voltage Directive
EMC 2014/30/UE Electromagnetic Compatibility
The quality is guaranteed by a quality and management system certified in accordance with ISO 9001:2015.
1 Declarations

20198379 4
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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 Cen-
tre 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 DE-
VICES
This symbol signals the obligation to reassemble
the cover and all the safety and protection devices
of the burner after any maintenance, cleaning or
checking operations.
ENVIRONMENTAL PROTECTION
This symbol gives indications for the use of the
machine with respect for the environment.
IMPORTANT INFORMATION
This symbol indicates important information that
you must bear in mind.
This symbol indicates a list.

5 20198379
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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 appliance;
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;
use of non-original components, including spare parts, kits,
accessories and optionals;
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.

20198379 6
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Safety and prevention
3.1 Background
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.
Namely:
it can be applied to boilers operating with water, steam, diather-
mic oil, and to other uses expressly named by the manufacturer;
the type and pressure of the fuel, the voltage and frequency of the
electrical power supply, the minimum and maximum deliveries for
which the burner has been regulated, the pressurisation of the
combustion chamber, the dimensions of the combustion cham-
ber and the ambient temperature must all be within the values in-
dicated 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.
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.

7 20198379
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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 Combustion head Voltage Code
RS5 TC 1/230/50 20198364
Range:
Size
Fuel: Natural gas
LPG
Variations:
Electrical power 1/230/50
1/220/60
R S 5 1/230/50
BASIC DESIGNATION
EXTENDED DESIGNATION
1/230V/50Hz
1/220V/60Hz
F Light industrial process
M Progressive two-stage or modulating
D Two-stage
S
SP
Head : TC Standard head
TL Extended head
of the system :
Standard Emission
Low NOx
R
B
TC

20198379 8
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Technical description of the burner
4.3 Technical data
Tab. B
(1) Reference conditions: Temperature 20°C - Barometric pressure 1013 mbar – Altitude 0 m above sea level.
(2) Sound pressure measured in manufacturer's combustion laboratory, with burner operating on test boiler and at maximum output.
The sound power is measured with the “Free Field” method, as per EN 15036, and according to an accurate “Accuracy: Category 3” measurement,
as described in EN ISO 3746.
4.4 Electrical data
Tab. C
Model RS5
Thermal power(1) kW
Mcal/h
160 ÷ 330
13.76 - 28.38
Fuel Gas
G20
NCV 8 12 kWh/m3 – 7.000 10.340 kcal/m3
Pressure: min. 20 mbar – max. 100 mbar
Operation Intermittent (FS1)
Use Boilers: water and diathermic oil
Ambient temperature °C 0 - 40
Combustion air temperature °C max 40
Noise levels (2) Sound pressure
Sound power dB (A) 71 82
Weight kg 18 - 20
Model RS5
Electrical supply 1~ 230V 50 Hz
Fan motor rpm
Hz
A
2720
50
1.9
Ignition transformer Primary 230V
Secondary 18 kV / 11 mA
Capacitor F8.0
Absorbed electric power kW 0.43
Protection level IP40

9 20198379
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Technical description of the burner
4.5 Maximum dimensions
The maximum dimensions of the flange and burner are given in
Fig. 1.
Tab. D
4.6 Preparing the boiler
4.6.1 Boring the boiler plate
Pierce the closing plate of the combustion chamber, as in Fig. 2.
The position of the threaded holes can be marked using the ther-
mal insulation screen supplied with the burner.
Tab. E
F
GH
I
M
A
DE
B
C
Ø L
Fig. 1
S9702
Model A B C D E F G H I ø L M
RS5 300 345 392 150 150 503 278 300 225 203 216 137 286
Model A B C D E F
RS5 218 80.5 203 170 200 137
Fig. 2
20098188

20198379 10
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Technical description of the burner
4.7 Firing rate
The burner output is chosen from within the diagram area (Fig. 3).
4.8 Test boiler
The firing rate has been defined on test boilers according to EN
676 standard.
4.8.1 Commercial boilers
The burner-boiler matching is assured if the boiler conforms to
EN 303 and the combustion chamber dimensions are similar to
those shown in the diagram EN 676.
For applications where the boiler does not conform to EN 303, or
where the combustion chamber is much smaller than the dimen-
sions given in EN 676, please consult the manufacturers.
WARNING
The firing rate value (Fig. 3) has been obtained
considering an ambient temperature of 20 °C, an
atmospheric pressure of 1013 mbar (approx. 0 m
a.s.l.), and with the combustion head adjusted as
shown on page 18.
Pressure in the combustion
Fig. 3
chamber – mbar
Heat output
130.000 290.000
kW150
kcal/h
2.4
0.8
0
170 190 210 230 250 270 290 310 350
1.6
170.000 210.000 250.000
4.0
330
3.2
D6231

11 20198379
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Technical description of the burner
4.9 Burner description
1 Air pressure switch
2 6 pole socket for gas train
3 Control box
4 Reset button with lock-out signal
5 Head assembly support
6 Pressure test point
7 Flange with insulating gasket
8 Air damper adjustment assembly
9 Servomotor
10 Motor
4.10 Burner equipment
Flange with insulating gasket . . . . . . . . . . . . . . . . . . . . . . No. 1
Screws and nuts for fixing the flange to the boiler . . . . . . . No. 4
Screw and nut for flange . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
7-pin plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
08
4
2610
Fig. 4
D10158
8
6
1
4
2
5
10
3
7
9

20198379 12
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Technical description of the burner
4.11 Electrical control box
The control box is a control and supervision system of medium
and large capacity forced draught burners, for intermittent opera-
tion (at least one controlled shut-down every 24 hours).
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).
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.
For safety and reliability, comply with the following instruc-
tions:
– avoid conditions that can favour the development of conden-
sate and humidity. Otherwise, before switching on again,
make sure the 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
national and local safety regulations.
• Install switches, fuses, earth connection etc. in compliance
with local regulations.
• Do not confuse the powered conductors with the neutral
ones.
• Ensure that spliced wires cannot get into contact with neigh-
bouring terminals. Use adequate ferrules.
• Arrange the H.V. ignition cables separately, as far as possi-
ble from the control box and the other cables.
• When wiring the unit, make sure the 230V AC mains voltage
cables are run strictly separate from extra low-voltage cables,
to avoid the risk of electrocution.
Technical data
Tab. F
Electrical wiring of the flame detector
It is important for signal transmission to be almost totally free
of any disturbances or loss:
• Always separate the detector cables from the other cables:
– the line capacity reduces the magnitude of the flame sig-
nal;
– use a separate cable.
• The cable length must not exceed 1m.
• Respect the polarity
• Insulation resistance:
– must be at least 50Mbetween the ionisation probe and
the earth;
– a dirty detector reduces the insulation resistance, fostering
leakage currents.
• The ionisation probe is not protected against the risk of elec-
trocution. When connected to the electricity supply, the ioni-
sation probe must be protected against any accidental
contact.
• Position the ionisation probe so that the ignition spark cannot
form an arc on the probe (risk of electric overcharge).
WARNING
To avoid accidents, material or environmental
damage, observe the following instructions!
The control box is a safety device! Avoid opening
or modifying it, or forcing its operation. Riello
S.p.A. cannot assume any responsibility for dam-
age resulting from unauthorised interventions!
Mains voltage AC 230V -15% / +10%
Mains frequency 50/60 Hz ±6%
Power consumption 12 VA
External primary fuse Max. 10 A (slow)
Weight Approx. 160 g
Degree of protection IP40
Safety class I
Environmental conditions
Storage
Climatic conditions
Mechanical conditions
Temperature range
Humidity
DIN EN 60721-3-1
Class 1K3
Class 1M2
-20...+60°C
< 95% RH
CAUTION
Condensation, formation of ice and ingress of wa-
ter are not permitted!
Fig. 5
S9084

13 20198379
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Technical description of the burner
4.12 Air damper opener
Warnings
All interventions (assembly and installation operations,
assistance, etc.) must be carried out by qualified personnel.
Before modifying the wiring in the connection area or the
actuator, fully disconnect the burner control device from the
power supply (omnipolar separation).
To avoid the risk of electrocution, protect the connection ter-
minals in a suitable manner and correctly fix the cover.
Check the wiring is in order.
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.
Assembly notes
• Check the relevant national safety standards are respected. Technical characteristics
Tab. G
WARNING
To avoid accidents, material or environmental
damage, observe the following instructions!
Avoid opening, modifying or forcing the actua-
tors.
Voltage and frequency 230V - 50Hz
Rotation versus Clockwise (view from the tree)
Output 5W
Ambient temperature -40 +60 °C
Electric load 16(A) (4), 250V
Protection level IP54
Rotation time 90° 5 - 20 sec.
Fig. 6
20096846

20198379 14
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Installation
5.1 Notes on safety for the installation
After carefully cleaning all around the area where the burner is to
be installed, and arranging for the environment to be illuminated
correctly, proceed with the installation operations.
5.2 Instructions to avoid burnout or bad combustion of the burner
1 The burner can not be installed outside as it is suitable for
operation in closed rooms only.
2 The premises the burner operates in must have openings
for the air need for the combustion. To be sure about this,
you have to control CO2and CO in the exhaust gases with
all the windows and doors closed.
3 If there are air extractors in the premises the burner works,
make sure that there are openings for air to be taken in that
are big enough to ensure the required air change; In any
case, check that when the burner stops the extractors do
not draw hot fumes from pipes through the burner.
4 When the burner is stopped, the smoke pipe must be kept
open and a natural draft created in the combustion chamber.
If the smoke pipe is closed, the burner must be drawn back
till the extraction of blast tube from the furnace. Before oper-
ating in this way take the voltage off.
5.3 Handling
The transport weight is given in chapter Technical data on
page 8.
Observe the permissible ambient temperatures for storage and
transport: -20... + 70 °C, with max. relative air humidity 80%.
5Installation
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.
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.
The operator must use the required equipment
during installation.

15 20198379
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Installation
5.4 Preliminary checks
Control of the supply
Control of burner characteristics
Check the identification label of the burner (Fig. 7), showing:
A the burner model;
B the data of the burner's possible minimum and maximum
output (see Firing rate);
C the cryptographic year of manufacture;
D the serial number;
E the data for electrical supply and the protection level;
F the electrical power consumption;
G the types of gas used and the relative supply pressures;
Warning: the burner output must be within the boiler's firing
rate.
5.5 Operating position
CAUTION
After removing all the packaging, check the integ-
rity of the contents.
In the event of doubt, do not use the burner; con-
tact the supplier.
The packaging elements (cardboard box, 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 appro-
priate places.
WARNING
The figure of the label (Fig. 7) is indicative.
Some of the data may be arranged in a different
position.
WARNING
A burner label that has been tampered with, re-
moved or is missing, along with anything else that
prevents the definite identification of the burner
makes any installation or maintenance work diffi-
cult.
Fig. 7
R.H.E. A
E F
G
G
G
X
D C
B
B
B
20191133
WARNING
The burner is set up to operate only in posi-
tions 1, 2, 3,5,6 and 7 (Fig. 8).
Installation 1is preferable, as it is the only
one that allows the maintenance operations
as described in this manual.
The installation layout illustrated in position 5
is only possible using the “MULTI-BLOC rota-
tion kit”, to be ordered separately.
DANGER
Any other position could compromise the cor-
rect operation of the appliance.
Installation 4are forbidden for safety rea-
sons.
Fig. 8
D4450
2 3 4
5
1
6 7

20198379 16
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Installation
5.6 Securing the burner to the boiler
To install the burner on the boiler, do the following:
if necessary, widen the insulating gasket holes (Fig. 9), tak-
ing care not to damage them.
The burner can be fixed with the variable position (A) as shown
in Fig. 10.
Tab. H
Fix the flange 5) to the door of the boiler 1)(Fig. 11) placing
the insulating gasket 3) in between using the screws 4) and
(if necessary) the nuts 2), but keeping one of the two top
screws 4) loose.
Insert the combustion head of the burner in the flange 5),
tighten the flange with the screw 6), then lock the screw 4)
which was loose.
Provide an adequate lifting system of the burner.
Model A (mm)
RS5 225 203
WARNING
In any event, make sure that the combustion head
crosses the entire thickness of the boiler door.
WARNING
The seal between burner and boiler must be
airtight.
Fig. 9
D5012
Fig. 10
D6341
A
Fig. 11
SW1003

17 20198379
GB
Installation
5.7 Combustion head adjustment
The combustion head leaves the factory set for the minimum
output.
The ignition should occur at a low output and not higher
than 120 kW.
In order to measure the ignition output:
- disconnect the connector on the ionisation probe cable; the
burner comes on and goes into lockout after the safety
time (3s).
- Perform 10 ignitions with consecutive lockouts.
- Read the total quantity of gas burned on the meter. This
quantity must be equal to or lower than:
-0.10Nm
3 for G20 (natural gas H);
-0.10Nm
3 for G25 (natural gas L);
-0.03Nm
3 for G31 (LPG).
The adjustment of the combustion head varies depending on the
burner output.
This is carried out by turning the adjustment screw 6)(Fig. 12)
clockwise or anti-clockwise until the notch on the regulating rod
2) lines up with the outside surface of the head assembly 1).
In Fig. 12 the head regulating rod is set to notch 4.
Example
The diagram (Fig. 13) is indicative and shows the calibration of
the combustion head in relation to the burnt output.
To ensure the burner works efficiently, we suggest adjusting the
combustion head according to the requirements of the specific
boiler.
The burner is installed in a 210 kW boiler. Considering an effi-
ciency of 90%, the burner must supply around 230 kW; for this
burner output the adjustment should be on notch 4.
5.7.1 Removing the head assembly
To remove the head assembly (Fig. 12), carry out the following
operations:
Remove the head-older assembly 1), after taking away the
screws 7), disconnect the connections 3) and 5), extract the small
tube 4) and loose the screws 10).
Do not modify the setting position of the bracket-elbow during the
disassembly.
5.7.2 Reassembling the head assembly
Reassemble with the reverse procedure to that described above,
repositioning the head assembly 1)(Fig. 12) as it was originally.
CAUTION
Take care not to change the setting position on
the elbow-bracket 2) when dismantling.
CAUTION
Screw in the screws 7)(Fig. 12) all the way without
locking them.
Lock them with a tightening torque of 3 - 4 Nm.
WARNING
Check that when operating there are no gas leaks
from the screw housings.
If the pressure test point 11) should become slack
accidentally (Fig. 12) we recommend fixing it cor-
rectly ensuring that the hole (F) (Fig. 12) inside the
head assembly 1)(Fig. 12) is facing downwards.
1
2
1
3
6
8
7
10
11
9
F
5
4
Fig. 12
20198851
Fig. 13
Set point
210,000
150,000
290,000
190,000
170,000
130,000
kcal/h kW
08246
150
190
210
250
270
290
310
330
170
230
350
10
D6235
230,000
250,000
270,000

20198379 18
GB
Installation
5.8 Positioning the probe - electrode
Make sure that the plate 3)(Fig. 14) is always inserted in the
flattening of the electrode 1).
Rest the probe insulator 4) against the air diffuser 2).
Tab. I
WARNING
Respect the positions shown in Tab. I.
Model A (mm)
RS5 31
Fig. 14
D4020
A± 0.3
3.5 ± 0.3 2
1
2
1
43