Riello RS 250/E MZ Quick start guide

Installation, use and maintenance instructions
Blown type gas burners
2916367 (0) - 11/2007
Code Model Type
RS 70/E MZ 828 T2
RS 70/E MZ 828 T2
RS 100/E MZ 829 T2
RS 100/E MZ 829 T2
RS 130/E MZ 830 T2
RS 130/E MZ 830 T2
3787630 - 3787632 RS 190/E 836 T2
3789200 - 3789210 RS 250/E MZ 866 T1
3789201 - 3789211 RS 250/E MZ 866 T1
3789230 - 3789240 RS 250/E MZ 866 T1
3789231 - 3789241 RS 250/E MZ 866 T1
GB
Progressive two-stage or modulating operation

2GB
Declaration of conformity in accordance with ISO / IEC 17050-1
Manufacturer: RIELLO S.p.A.
Address: Via Pilade Riello, 7
37045 Legnago (VR)
Product: Blown type gas burner
Model: RS 70/E MZ
RS 100/E MZ
RS 130/E MZ
RS 190/E
RS 250/E MZ
These products are in compliance with the following Technical Standards:
EN 676
EN 292
EN 50 081-1
EN 50 082-1
EN 60 335
According to the European Directives:
GAD 90/396/EEC Gas Devices Directive
MD 98/37/EEC Machine Directive
LVD 73/23/EEC - 2006/95/EEC Low Voltage Directive
EMC 89/336/EEC - 2004/108/EEC Electromagnetic Compatibility
such products are marked as follows:
Legnago, 26.06.2007
CE-0085XXXXX (for RS 70/E MZ)
CE-0085XXXXX (for RS 100/E MZ)
CE-0085XXXXX (for RS 130/E MZ)
CE-0085XXXXX (for RS 190/E)
CE-0085XXXXX (for RS 250/E MZ)
Mr. G. Conticini
Burners Division Department
The quality is guaranteed by a quality and management system certified in
accordance with UNI EN ISO 9001.

3
GB
Contents
Section Page
1Information and general warnings 4
1.1 Information about the instruction manual 4
1.2 Guarantee and responsibility 4
2Safety and prevention 5
2.1 Introduction 5
2.2 Personnel training 5
3Technical description of the burner 6
3.1 Burner designation 6
3.2 Models available 6
3.3 Burner categories- Countries of destination 6
3.4 Technical data 7
3.5 Packaging 7
3.6 Overall dimensions 7
3.7 Firing rates 8
3.8 Burner components 9
3.9 Burner equipment 9
3.10 Control box for the air/fuel ratio 10
3.11 Servomotors 11
4Installation 12
4.1 Notes on safety for the installation 12
4.2 Handling 12
4.3 Preliminary checks 12
4.4 Working position 12
4.5 Securing the burner to the boiler 13
4.6 Pre-calibration of the combustion head (only for
the model RS 130/E MZ) 14
4.7 Combustion head adjustment 15
4.8 Assembly of the gas train 17
4.9 Electrical wiring 18
4.10 Calibration of the thermal relay 19
5Start-up, calibration and operation of the
burner 20
5.1 Notes on safety for the first start-up 20
5.2 Operations before start-up 20
5.3 Burner start-up 21
5.4 Final calibration of the pressure switches 21
5.5 Operator Panel with LCD display 23
5.6 Visualisation and programming modes 24
5.7 Operation sequence of the burner 29
5.8 Start-up procedure 30
5.9 CALC function 32
5.10 Burner adjustment 32
5.11 Steady state operation 33
5.12 Ignition failure 33
5.13 Burner flame goes out during operation 33
5.14 Stopping of the burner 33
5.15 Measuring the ionisation current 33
5.16 Checking the air and gas pressure on the com-
bustion head 33
5.17 Final checks (with the burner working): 33
5.18 List of parameters 34
6Faults - Possible causes - Solutions 38
6.1 List of error codes 38
7Maintenance 42
7.1 Notes on safety for the maintenance 42
7.2 Maintenance programme 42
7.3 Opening the burner 43
7.4 Closing the burner 43
AAppendix - Electrical panel layout 44
BAppendix - Accessories (on request) 50
CAppendix - Gas supply pressure 52
DAppendix - Firing rate on basis of air density 53

4GB
Information and general warnings
1
1.1 Information about the instruction manual
Introduction
The instruction manual supplied with the burner:
³is an integral and essential part of the product and must not
be separated from it;it musttherefore 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 sys-
tem. If the manual is lost or damaged, another copy must be
requested from the Technical Assistance Service of
the Area;
³is designed for use by qualified personnel;
³offers important indications and instructions relating to the in-
stallation 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.
The dangers can be of 3 levels, as indicated below.
Other symbols
Abbreviations used
Ch. Chapter
Fig. Figure
Page Page
Sec. Section
Tab. Table
Delivery of the system and the instruction manual
When the system is delivered, it is important that:
³the instruction manual is consigned to the user by the system
manufacturer, with the recommendation to keep it in the room
where the heat generator is to be installed.
³The instruction manual shows:
the serial number of the burner;
the address and telephone number of the nearest Assistance
Centre.
³The system supplier must carefully inform the user about:
- the use of the system,
- any further tests that may be necessary before the system
is started up,
- maintenance and the need to have the system checked at
least once a year by the manufacturer or another specialised
technician.
To ensure a periodic check, recommends the draw-
ing up of a Maintenance Contract.
Maximum danger level!
This symbol indicates operations which, if not
carried out correctly, cause serious injury,
death or long-term health risks.
This symbol indicates operations which, if not
carried out correctly, may cause serious
injury, death or long-term health risks.
This symbol indicates operations which, if not
carried out correctly, may cause damage to
the machine and/or injury to people.
GENERAL DANGERS
DANGER
WARNING
CAUTION
This symbol indicates operations which, if not
carried out correctly, lead to electric shocks
with lethal consequences.
ENVIRONMENTAL PROTECTION
This symbol gives indications for the use of
the machine with respect for the environ-
ment.
³This symbol indicates a list.
DANGER: LIVE COMPONENTS
DANGER
1.2 Guarantee and responsibility
guarantees its new products from the installation date, in
accordance with the regulations in force and/or the sales con-
tract. At the moment of the first start-up, check that the burner is
integral and complete.
Failure to observe the information given in this
manual, operating negligence, incorrect installation
and the carrying out of non authorised modifications
will result in the annulment by of the
guarantee that it supplies with the burner.
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:
³incorrect installation, start-up, use and maintenance of the
burner;
³improper, incorrect or unreasonable use of the burner;
³intervention of unqualified personnel;
³carrying out of non authorised modifications on the
equipment;
³use of the burner with safety devices that are faulty,
incorrectly applied and/or not working;
³installation of untested supplementary components on the
burner;
³powering of the burner with unsuitable fuels;
³faults in the fuel power supply system;
³use of the burner even following an error and/or an
irregularity;
³repairs and/or overhauls incorrectly carried out;
³modification of the combustion chamber with inserts that
prevent the regular development of the structurally
established flame;
³insufficient and inappropriate surveillance and care of those
burner components most subject to wear and tear;
³use of non-original components, including spare
parts, kits, accessories and optionals;
³force majeure.
furthermore declines any and every responsibility
for the failure to observe the contents of this manual.
WARNING

5
GB
Safety and prevention
2
2.1 Introduction
The burners have been designed and built in compliance
with current regulations and directives, applying the known tech-
nical rules of safety and envisaging all the potential danger situ-
ations.
It is necessary, however, to bear in mind that the imprudent and
clumsy use of the equipment may lead to situations of death risk
for the user or thirdparties, as well as the damaging ofthe 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:
³The 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, dia-
thermic oil, and to other users expressly named by the man-
ufacturer;
the type and pressure of the fuel, the voltage and frequency
of the electrical power supply, the minimum and maximum de-
liveries for which the burner has been regulated, the pressur-
isation of the combustion chamber, the dimensions of the
combustion chamber and the room temperature must all be
within the values indicated in the instruction manual.
³Modification of the burner to alter its performance and desti-
nations is not allowed.
³The burner must be used in exemplary technical safety con-
ditions. Any disturbances that could compromise safety must
be quickly eliminated.
³Opening or tampering with the burner components is not al-
lowed, apart from the parts requiring maintenance.
³Only those parts envisaged by the manufacturer can be re-
placed.
2.2 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:
³undertakes to entrust the machine exclusively to suitably
trained and qualified personnel;
³must take all the measures necessary to prevent unauthor-
ised people gaining access to the machine;
³undertakes to inform his personnel in a suitable wayabout 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;
³must inform the Manufacturer if faults or malfunctioning of the
accident prevention systems are noticed, along with any pre-
sumed danger situation.
³Personnel must always use the personal protective equip-
ment envisaged by legislation and follow the indications given
in this manual.
³Personnel must follow all the danger and caution indications
shown on the machine.
³Personnel must not carry out, on their own initiative, opera-
tions or interventions that are not within their province.
³Personnel are obliged to inform their superiors of every prob-
lem or dangerous situation that may arise.
³The 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 de-
clines any and every responsibility for any damage that may
be caused by the use of non-original parts.

6GB
Technical description of the burner
3
3.1 Burner designation
3.2 Models available
3.3 Burner categories - Countries of destination
Designation Voltage Code
RS 70/E MZ TC 3 ~ 400 / 230V - 50Hz
RS 70/E MZ TL 3 ~ 400 / 230V - 50Hz
RS 100/E MZ TC 3 ~ 400 / 230V - 50Hz
RS 100/E MZ TL 3 ~ 400 / 230V - 50Hz
RS 130/E MZ TC 3 ~ 400 / 230V - 50Hz
RS 130/E MZ TL 3 ~ 400 / 230V - 50Hz
RS 190/E TC 3 ~ 400 / 230V - 50Hz 3787630 - 3787632
RS 250/E MZ TC 3 ~ 400 / 230V - 50Hz 3789200 - 3789210
RS 250/E MZ TL 3 ~ 400 / 230V - 50Hz 3789201 - 3789211
RS 250/E MZ TC 3 ~ 230V - 50Hz 3789230 - 3789240
RS 250/E MZ TL 3 ~ 230V - 50Hz 3789231 - 3789241
Country of destination Gas category
AT - CH - DK - FI - GR - IS - IT - NO - SE II2H3B/P
ES - GB - IE - PT II2H3P
NL II2L3B/P
FR II2Er3P
DE II2ELL3B/P
BE I2E(R)B, I3P
LU II2E3B/P
Range : R
Size
Fuel : S
L
LS
Natural gas
Light oil
Light oil / Natural gas
Adjustment : E Electronic cam
EV Electronic cam and variable speed (with Inverter)
Head : TC Standard head
TL Long head
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
Emission : ... Class 1 EN267 (light oil) - EN676 (gas)
MZ Class 2 EN267 (light oil) - EN676 (gas)
BLU Class 3 EN267 (light oil) - EN676 (gas)
MX Class 1 EN267 (light oil)
Class 3 EN676 (gas)
3N / 400V / 50Hz
3 / 230V / 50Hz
230V/50-60Hz
110V/50-60Hz
N Heavy oil
M Mechanical cam
3/400-230/50 3N / 400V-230V / 50Hz
P Proportional air/gas valve
R S 100 E TC FS1 3/400/50 230/50/60
BASIC DESIGNATION
EXTENDED DESIGNATION
MZ

7
GB
Technical description of the burner
3
3.4 Technical data
(1) Reference conditions: Room temperature 20°C - Gas temperature 15°C - Barometric pressure 1013 mbar - Altitude 0 m above sea level.
(2) Pressure on the pressure switch socket Fig. 29 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 output.
3.5 Packaging
3.6 Overall dimensions
Model RS 70/E MZ RS 100/E MZ RS 130/E MZ RS 190/E RS 250/E MZ
Type 828 T2 829 T2 830 T2 836 T2 866 T1
Output (1) maximum kW
Mcal/h 465 - 814 400 - 700 698 - 1163 600 - 100 930 - 1512 800 - 1300 1279 - 2290 1100 - 1970 1250 - 2650 1075 - 2279
minimum kW
Mcal/h 135 116 150 129 160 138 470 405 600 516
Fuel Natural gas: G20 (methane gas) - G21 - G22 - G23 - G25
Gas pressure at max. output (2) -
Gas: G20/G25 mbar in progress in progress in progress 14.9 / 22.3 19.4 / 29.1
Operation Intermittent (min. 1 stop in 24 hours)
Standard applications Boilers: water, steam, diathermic oil
Room temperature °C 0 - 40
Combustion air temperature °C max 60
Electrical supply 3 ~ 400V / 230 V 1N ~ 230V +/-10% 50 Hz (See Chap. 3.2)
Fan motor (rating)
Operating current
Acceleration current
rpm
V
kW
A
A
2800
230/400
1.1
4.8 - 2.8
33 - 19
2800
230/400
1.5
5.9 - 3.4
48 - 28
2800
230/400
2.2
8.8 - 5.1
68 - 39
2800
230/400
4.5
15.8 - 9.1
126 - 72
2800
230/400
5.5
21.3 - 12.3
144 - 83
Ignition transformer V1 - V2
I1 - I2 230 V - 1 x 8 kV 1 A - 20 mA
Absorbed electrical power kW max 1.6 2.0 2.8 5.3 6.5
Protection level IP 44
Compliance with EC Directives 98/37 - 90/396 - 89/336 - 2004108 - 73/23 - 2006/95
Noise level (3) dBA 75.0 77.0 78.5 83.1 83.0
Type-approval class 2 (EN 676) EC in progress in progress in progress -in progress
class 1 (EN 676) EC - - - in progress -
D36
• The packaging of the burner rests on a wooden platform that is particularly suitable
for lift trucks. The overall dimensions of the packaging are shown in the table.
• The weight of the burner complete with its packaging is shown in table.
mm ABCkg
RS 70/E MZ 1400 780 700 77-79
RS 100/E MZ 1400 780 700 80-82
RS 130/E MZ 1400 780 700 83-85
RS 190/E 1400 780 1000 89
RS 250/E MZ 1400 780 1000 124-126 Fig. 1
The dimensions of the burner are shown in Fig. 2.
Bear in mind that inspection of the combustion head
requires the burner to be opened and the rear part
drawn back on the guides.
The dimensions of the open burner are indicated by
position I. D731
(1) Blast tube: short-long
mm ABCDE F (1) GH I (1) LMNO
RS 70/E MZ 511 296 215 555 840 250-385 179 430 1161-1296 214 134 221 2”
RS 100/E MZ 527 312 215 555 840 250-385 179 430 1161-1296 214 134 221 2”
RS 130/E MZ 553 338 215 555 840 280-415 189 430 1161-1296 214 134 221 2”
RS 190/E 675 370 305 555 872 372 222 436 1328 230 150 223 2”
RS 250/E MZ 732 427 305 555 872 370-520 222 436 1322-1467 230 150 264 2”
Fig. 2

8GB
Technical description of the burner
3
3.7 Firing rates
D8034
RS 70/E MZ
RS 100/E MZ
Pressure in combus-
tion chamber
mbar
The firing rates were obtained in spe-
cial test boilers, according to EN 676
regulations.
Fig. 4 indicates the diameter and
length of the test combustion chamber.
Example
Output 756 kW (650 Mcal/h):
diameter 60 cm,
length 2 m.
The coupling is ensured when the
boiler is EC type-approved; for boilers
or ovens with combustion chambers of
very different dimensions compared to
those shown in the diagram of Fig. 4,
preliminary checks are recommended.
Fig. 3
Pressure in combus-
tion chamber
mbar
Fig. 4
The maximum output is chosen within area A (and B for RS
130/E MZ) of the diagram.
Note: to use area B (RS 130/E MZ) as well, the pre-calibration of
the combustion head is necessary, as explained in Chap. 4.6.
The minimum output must not be lower than the minimum limit
of the diagram.
Warning
The firing rate was obtained considering a room temperature of
20°C and an atmospheric pressure of 1013 mbar (approx. 0 m
above sea level), with the combustion head adjusted as shown
in Ch. 4.7.
Length of combustion
chamber
m
A
B
D715
RS 130/E MZ
Pressure in combus-
tion chamber
mbar
A
A
D882
RS 250/E MZ
RS 190/E
Pressure in combus-
tion chamber
mbar
Pressure in combus-
tion chamber
mbar
A
A

9
GB
Technical description of the burner
3
3.8 Burner components
3.9 Burner equipment
1 Combustion head
2 Ignition electrode
3 Screw for combustion head adjustment
4 Maximum gas pressure switch
5 Pipe coupling
6 Gas servomotor
7 Plug-socket on ionisation probe cable
8 Motor contact maker and thermal relay
with reset button
9 Operation on/off switch
10Terminal board for electrical wiring
11 Operator Panel with LCD display
12Control box for checking flame and air/
fuel ratio
13 Clean contacts relay
14 Filter to protect against radio distur-
bance
15 Flame inspection window
16 Ignition transformer
17 Cable grommets for electrical wiring
(to be carried out by the installer)
18 Air servomotor
19 Air pressure switch
(differential type)
20 Guides for opening the burner and
inspecting the combustion head
21 Gas pressure test point and head fix-
ing screw
22 Air pressure socket
23 Flame sensor probe
24 Air damper
25 Fan air inlet
26 Screws to secure fan to pipe coupling
27 Gas input pipe
28 Gas butterfly valve
29 Boiler fixing flange
30 Flame stability disc
31 Bracket for application of output regu-
lator RWF40
32 Extensions for guides 20) - only for TL
versions
seen from A
A
D8038
RS 250/E MZ
RS 190/E
RS 70-100-130/E MZ
RS 190/E
RS 250/E MZ
Fig. 5
The burner is supplied complete with:
³Gas train flange
³Flange gasket
³4 screws to fix the flange: M10 x 35 for RS 70-100-130/E MZ,
M10 x 40 for RS 190/E - RS 250/E MZ
³Thermal insulation screen
³4 Screws to fix the burner flange to the boiler:
M12 x 35 for RS 70-100-130/E MZ, M16 x 40 for RS 190/E -
RS 250/E MZ
³N° 2 Screws M4 x 7 (for RS 190/E and RS 250/E MZ only)
³Extensions 32) for guides 20): TL versions only
³Disc (for RS 190/E and RS 250/E MZ only)
³Small disc (for RS 190/E and RS 250/E MZ only)
³PVP kit for leak detection (supplied as standard with RS 130/
E MZ, RS 190/E and RS 250/E MZ, accessory supplied on
request for RS 70/E and RS 100/E - see Appendix B)
³Instruction manual
³Spare parts list

10 GB
Technical description of the burner
3
3.10 Control box for the air/fuel ratio
Introduction
The control box for the air/fuel ratio (hereafter referred to simply
as the control box), that equips the burners of the RS range, car-
ries out a series of integrated functions in order to optimise
burner functioning, both for single operation and together with
other units (e.g. double furnace boiler or more than one genera-
tor at the same time).
The basic functions carried out by the control box relate to:
1. flame control;
2. the dosage of air and fuel via the positioning (with direct ser-
vocontrol) of the relative valves, excluding the possible play in
the mechanical cam calibration systems;
3. the modulation of burner output, on the basis of the load
requested by the system, maintaining the pressure or temper-
ature of the boiler at the working values set;
4. the safety diagnostic of the air and fuel circuits, via which it is
possible to easily identify any causes of malfunctioning.
Further interfaces and computer communication functions (for
remote control or integration in central supervision systems) are
available according to the system configuration.
Technical Data
Fig. 6
D8266
NOTE
The first start-up, like every further operation
for the internal settings of the control box,
requires access by means of a password and
is only to be carried out by personnel of the
Technical Assistance Service who have been
specifically trained in the internal program-
ming of the tool.
The information for the first start-up is given below.
WARNING
Electrical supply AC 230 V - 15% /
+10%
Frequency 50/60 Hz +/- 6%
Internal fuse 6.3 A T
Operation below the nominal value of electrical supply
Minimum operation value on reduction
of electrical supply below nominal
value
approx. AC 186 V
Minimum operation value on increase
in electrical supply towards nominal
value
approx. AC 195 V
Maximum load of the contacts:
Fan motor relay
Nominal power supply
Nominal current
Output factor
AC 230 V, 50/60 Hz
2 A
cosϕ> 0.4
Alarm exit
Nominal power supply
Nominal current
Output factor
AC 230V, 50/60 Hz
1A
cosϕ> 0.4
Ignition transformer
Nominal power supply
Nominal current
Output factor
AC 230 V, 50/60 Hz
2 A
cosϕ> 0.2
Fuel valves
Nominal power supply
Nominal current
Output factor
AC 230 V, 50/60 Hz
2 A
cosϕ> 0.4
Operator Panel
Nominal power supply
Protection level
Input power
DC 5 V
IP 40
< 50 mW
Length of cables
Electrical supply line AC 230V
Display max. 100m (100 pF/m) max. 3m (100 pF/m)
Output regulator
Remote reset button max. 20m (100 pF/m) max. 20m (100 pF/m)

11
GB
3.11 Servomotors
Technical Data Fuel
servomotor Air servomotor
Model SQM33.4.. SQM33.5..
Type of motor Stepping motor
Electrical supply AC/DC 24V
IP IP54
Firing rate 0 - 90°
Opening time 0-90° min: 5 s, max.: 120 s depending on the type of control box
Torque 1.2 Nm 3 Nm
Input power 7.5 W 10 W
Rotation Clockwise/anticlockwise (can be selected from the control box)
Introduction
The servomotors that equip the burners of the RS range work directly on
the air damper and the gas butterfly valve, without mechanical lever-
ages but via the interposition of an elastic coupling.
They are commanded by the control box, which constantly checks their
position by means of a return signal from the optic sensor inside the ser-
vomotor. For this reason it is absolutely forbidden to remove
the cover of the servomotors.
The position (in degrees) of the servomotors can be seen on the display
of the Operator Panel. See Ch. 5.18, Parameter 922, index “0” for fuel
servomotor, index “1” for air servomotor.
The servomotors are electrically connected to the control box by means
of RAST 2.5 type connectors.
When servicing or replacing the servomotors, take care not to invert
the connectors. Follow the indications given in the electrical layouts or
the silkscreen printing on the control box cover.
WARNING
Fig. 7
D8271
Technical description of the burner
3

12 GB
Installation
4
4.1 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 environment,
proceed with the installation operations.
4.2 Handling
The packaging of the burner includes a wooden platform (see Ch. 3.5), so it is possible to move the burner (still packaged) with a
transpallet truck or fork lift truck.
With regard to the transport in the obligatory passages, refer to the overall dimensions shown in Fig. 1.
4.3 Preliminary checks
Checking the consignment
After removing all the packaging, check the integrity of the contents. In the event of doubt, do not use the burner; contact the
supplier.
The packaging elements (wooden cage or cardboard box, nails, clips, plastic bags, etc.) must not be abandoned as they are
potential sources of danger and pollution; they should be collected and disposed of in the appropriate places.
Checking the characteristics of the burner
Check the identification label of the burner, showing:
³the model (see Ain Fig. 8) and type of burner (B);
³the year of manufacture, in cryptographic form (C);
³the serial number (D);
³the data for electrical supply and the protection level (E);
³the electrical input power (F);
³the types of gas used and the relative supply
pressures (G);
³the data of the burner's minimum and maximum output
possibilities (H) (see Firing rate)
Warning. The output of the burner must be within the
boiler's firing rate;
³the category of the device/countries of destination (I).
4.4 Working position
The burner is designed to operate only in the positions
1, 2, 3 and 4.
Installation 1is preferable, as it is the only one that al-
lows 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.
Any other position could compromise the correct opera-
tion of the appliance. Installation 5is prohibited for
safety reasons.
All the installation, maintenance and disassem-
bly operations must be carried out with the elec-
tricity supply disconnected.
DANGER
The installation of the burner must be carried out
by qualified personnel, as indicated in this man-
ual and in compliance with the standards and
regulations of the laws in force.
WARNING
WARNING
The handling operations for the burner can be highly dangerous if not carried out with the greatest attention: keep any
unauthorised people at a distance; check the integrity and suitableness of the available means of handling.
Check also that the area in which you are working is empty and that there is an adequate escape area (i.e. a free, safe
area to which you can quickly move if the burner should fall).
During the handling, keep the load at not more than 20-25 cm from the ground.
After positioning the burner near the installation point, correctly dispose of all residual packaging, separating the various
types of material.
Before proceeding with the installation operations, carefully clean all around the area where the burner will be installed.
CAUTION
CAUTION
R.B.L.
GAS-KAASU
GAZ- AEPIO
0085
RIELLOS.p.A.
I-37045 Legnago (VR)
CE
Fig. 8
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 and
makes any installation or maintenance work diffi-
cult.
WARNING
D7738
ABC
EDF
HG
GH
I
2 3 4 51
D7739
Fig. 9

13
GB
Installation
4.5 Securing the burner to the boiler
Preparing the boiler
100mm
5
9
12
11
8
3
4
21
L
10
13
13
3
15
14
D7950
Boring the boiler plate
Make holes in the plate shutting off the combustion chamber, as
illustrated in Fig. 10. The position of the threaded holes can be
marked using the thermal insulation screen supplied with the burner.
mm A B C
RS 70/E MZ 185 275-325 M 12
RS 100/E MZ 185 275-325 M 12
RS 130/E MZ 195 325-368 M 16
RS 190/E 230 325-368 M 16
RS 250/E MZ 230 325-368 M 16
Fig. 11
Length of the blast tube
The length of the blast tube must be selected according to the
indications provided by the manufacturer of the boiler, and in
any case it must be greater than the thickness of the boiler door
complete with its refractory. The available lengths L are those
indicated in the table below.
For boilers with front flue passes 13) or flame inversion cham-
bers, a protection in refractory material 11) must be inserted
between the boiler refractory 12) and the blast tube 10). This
protection must not compromise the extraction of the blast tube.
See Fig. 11.
For boilers with a water-cooled frontal, a refractory lining is not
necessary 11)-12) unless expressly requested by the boiler
manufacturer.
Fig. 10
Blast tube 10) RS 70/E MZ RS 100/E MZ RS 130/E MZ RS 190/E RS 250/E MZ
• short 250 mm 250 mm 280 mm 372 mm 370 mm
• long 385 mm 385 mm 415 mm -520 mm
4

14 GB
Installation
Securing the burner to the boiler
Before fixing the burner to the boiler, check from the opening of the blast tube that the probe and the electrode are correctly positioned,
as in Fig. 12.
If, in the previous check, the position of the probe or electrode was not correct, remove the screw 1)(Fig. 13), extract the inner part
2)(Fig. 13) of the head, and adjust them.
Do not rotate the probe: leave it as in Fig. 12; if it is located too close to the ignition electrode, the control box amplifier may be damaged.
Before fixing the burner to the boiler, check (for the model RS 130/E MZ) if its maximum output is included in area A or B of the firing rate.
See Fig. 3.
If it is in area A, no intervention is required.
If it is in area B, it is necessary to pre-calibrate the combustion head, as described in Ch. 4.6.
Once this operation has been carried out, fix the flange 9)(Fig. 11) to the boiler plate, interposing the insulating gasket 8)(Fig. 11) sup-
plied.
Use the 4 screws supplied, with a tightening torque of 35 - 40 Nm, after protecting their thread with anti-seize products.
The seal between burner and boiler must be airtight. After the start-up (see Ch. 5.8), check there is no leakage of flue gases into the
external environment.
4.6 Pre-calibration of the combustion head (only for the model RS 130/E MZ)
Fig. 12 D1209
Probe Electrode
Separate the combustion head from the rest of the burner, Fig. 11.
To do this, proceed as follows:
³loosen the 4 screws 3) and remove the hood 1);
³remove the screws 2) from the two guides 5);
³disconnect the plug 14), unscrew the grommet 15);
³disconnect the socket from the maximum gas pressure switch;
³remove the two screws 4);
³pull back the burner on the guides 5) by about 100 mm;
³disconnect the probe and electrode leads, then unthread the
burner completely from the guides.
Fig. 13
D7951
Fig. 14
See Fig. 14.
³Unscrew screws 1) and dismantle the
blast tube 2).
³Move the fixing point of the rod 3) from
position A to position B, thereby moving
the shutter 4 backwards).
³Reassemble the blast tube 2) and the
screws 1).
CAUTION
D738
4

15
GB
Installation
4.7 Combustion head adjustment
At this point of the installation, the combustion head is fixed
to the boiler as shown in Fig. 13. It is therefore especially
easy to adjust, and this adjustment depends only on the max-
imum output of the burner.
Two adjustments of the head are foreseen:
³the air adjustment;
³the gas adjustment.
In the diagram of Fig. 17, find the notch at which to adjust
both air and central gas/air.
Air adjustment
Rotate the screw 2) until the notch you have found corre-
sponds with the front surface 1) of the flange.
Gas adjustment (RS 70-100-130/E MZ)
Loosen the 4 screws and turn ring 5) until the notch identified
is aligned with index 6).
Tighten the 3 screws 4) fully down.
Gas adjustment (RS 190/E - RS 250/E MZ)
When the burner is installed for maximum burner output
≤1300 Mcal/h (approx. 1500 kW) fit the discs 1)-2)(Fig. 16),
supplied as part of the standard equipment, removing the
internal tube 3)(Fig. 16). If the mains gas pressure is low, the
head can be left in the standard set-up, limiting the modula-
tion minimum to 450 Mcal/h (approx. 520 kW).
Example
RS 70/E MZ, burner output = 581 kW.
According to diagram Fig. 17 the gas and air adjustments for
this output are carried out on notch 3.
NOTE
The diagram indicates the optimum adjustment for a type of
boiler according to Fig. 4.
Important
To facilitate adjustment, loosen the screw 3),
adjust and then lock.
Fig. 16
231
D8084
2
1
2
1
3
4
5
6
D8039
RS 70-100-130/E MZ
RS 190/E - RS 250/E MZ
Fig. 15
CAUTION
No. of Notches
Maximum output of burner
D8040
Fig. 17
Maximum burner output
10
1200
9
7
5
3
1
19001700150013001100
8
6
4
2
0
kW
Mcal / h
1400 1600 1800 2000 2200 280026002400
2100 2300 2500
RS 250/ ERS 190/ E
No. of Notches
D720
RS 70/E MZ RS 130/E MZ
RS 190/E
RS 100/E MZ
RS 250/E MZ
in progress
4

16 GB
Installation
Once the combustion head adjustment is completed:
³reassemble the burner on the guides 3) at about 100 mm
from the pipe coupling 4) - burner in the position shown in
Fig. 11;
³insert the probe and electrode cables, then slide the burner
as far as the pipe coupling - burner in the position shown in
Fig. 18;
³connect the plug of the servomotor 14) (Fig. 11) and tighten
the cable grommet 15) (Fig. 11);
³connect the socket of the maximum gas pressure switch;
³refit the screws 2) on the guides 3);
³fix the burner to the pipe coupling with the screws 1).
When fitting the burner on the two guides, it is
advisable to gently draw out the high voltage
cable and flame detection probe cable until they
are slightly taut.
CAUTION
4
Fig. 18 D7975

17
GB
4.8 Assembly of the gas train
³The gas train is type-approved according to standard EN 676 and is sup-
plied separately from the burner, with the code indicated in Appendix B.
³The gas train can enter the burner from the right or left side, depending
on which is the most convenient, see Fig. 19.
³The gas train must be connected to the gas attachment 1)(Fig. 19) with
the flange 2), the gasket 3) and the screws 4) supplied with the burner.
³The gas solenoids must be as close as possible to the burner, to ensure
that the gas reaches the combustion head within the safety time of 3 s.
³Ensure that the maximum pressure necessary for the burner is included
in the calibration field of the pressure adjuster (colour of the spring): gas
train MBC-1900-SE.
The losses of load along the gas supply line are indicated in Appendix C.
See the accompanying instructions for the adjustment of
the gas train.
D722
Fig. 19
WARNING
P2
56B
8
8
6A
P2
P1
P1
13
12
10
12
10
123
47
9
123
47
13
11
11
L1 L
L1 L
P3
D3735
1 - Gas input pipe
2 - Manual valve
3 - Vibration damping joint
4 - Pressure gauge with pushbutton cock
5 - Filter
6A - “Threaded” multibloc including:
- filter (can be replaced)
- safety valve
- working valve
- pressure adjuster
6B - “Flanged” multibloc including:
- safety valve
- working valve
- pressure adjuster
7 - Minimum gas pressure switch
8 - Valve leak detection control device.
In accordance with the standard EN 676,
leak detection is compulsory for burners with
maximum outputs of more than 1200 kW.
9-Gasket
10 - Gasket supplied with burner
11 - Gas adjustment butterfly valve
12 - Maximum gas pressure switch
13 - Gas train/burner adaptor
- supplied with burner
- supplied on request separately from the
gas train for the flanged versions
P1 - Pressure at combustion head
P2 - Upstream pressure of valves/adjuster
P3 - Pressure upstream from the filter
L - Gas train supplied separately with the
code indicated in Appendix B.
L1 - The responsibility of the installer
Fig. 20
Installation
4

18 GB
Installation
4.9 Electrical wiring
If the hood is still present, remove it
and proceed with the electrical wiring
according to the layouts shown in
Appendix A.
Use flexible cables according to stand-
ard EN 60 335-1.
All the cables to be connected to the
burner are fed through the grommets.
See Fig. 21.
The use of the cable grommets can
take various forms. By way of example
we indicate the following mode:
1 - Three-phase power supply
2 - Single phase power supply
3 - Consents/safety
4 - Minimum gas pressure switch
5-Gasvalves
6-Available
Cable grommets used in the factory:
A - Fan motor
B - Maximum gas pressure switch
C - Gas servomotor
D - Air servomotor
Notes on safety for the electrical wiring
³The electrical wiring must be carried out with the electrical supply disconnected.
³Electrical wiring must be carried out by qualified personnel and in compliance with the regulations currently in force in
the country of destination. Refer to the electrical layouts given in Appendix A.
³declines all responsibility for modifications or connections different from those shown in the electrical layouts.
³Check that the electrical supply of the burner corresponds to that shown on the identification label and in this manual.
See Fig. 8.
³Do not invert the neutral with the phase in the electrical supply line. Any inversion would cause a lockout due to firing
failure.
³The burners RS 70-100-130-190-250/E have been type-approved for intermittent operation. This means they should
compulsorily be stopped at least once every 24 hours to enable the control box to perform checks of its own start-up
efficiency. Normally the boiler's thermostat/pressure switch ensures the stopping of the burner.
If this is not the case, it is necessary to apply in series with IN a timer switch that turns off the burner at least once
every twenty-four hours. Refer to the electrical layouts given in Appendix A.
³The electrical safety of the device is obtained only when it is correctly connected to an efficient earthing system,
made according to current standards. It is necessary to check this fundamental safety requirement. In the event of
doubt, have the electrical system checked by qualified personnel. Do not use the gas tubes as an earthing system for
electrical devices.
³The electrical system must be suitable for the maximum input power of the device,as indicated on the label and in the
manual, checking in particular that the section of the cables is suitable for the input power of the device.
³For the main power supply of the device from the electricity mains:
- do not use adapters, multiple sockets or extensions;
- use an omnipolar switch with an opening of at least 3 mm between the contacts, as indicated by the current safety
standards.
³Do not touch the device with wet or damp body parts and/or in bare feet.
³Do not pull the electric cables.
DANGER
Fig. 21
D7955
4

19
GB
Installation
4.10 Calibration of the thermal relay
The thermal relay is used to avoid damage to the motor
owing to a strong increase in absorption or the lack of a
phase.
For the calibration, refer to the table given in electrical layout
no. 6 in Appendix A.
If the minimum value of the scale of the thermal relay is
greater than the rating absorption of the motor, protection is
still ensured. This arises when the power supply of the motor
is 400 V.
To reset, in the case of an intervention of the thermal relay,
press the button 1) of Fig. 22.
Fig. 22
2
1
D8267
4

20 GB
5.1 Notes on safety for the first start-up
5.2 Operations before start-up
³Ensure that the gas supply Company has carried out the supply line vent operations, eliminating air or inert gases from the piping.
³Slowly open the manual valves situated upstream of the gas train.
³Adjust the minimum gas pressure switch to the start of the scale.
³Adjust the maximum gas pressure switch to the end of the scale.
³Adjust the air pressure switch to the start of the scale.
³Adjust the pressureswitchforthevalveleakdetectioncontroldevice(PVPKit),ifpresent,according tothe instructionssupplied with the Kit itself.
³Check the gas supply pressure by connecting a
pressure gauge to the pressure test point 1)(Fig. 27)
of the minimum gas pressure switch: it must be low-
er than the maximum allowed pressure of the gas
train, as shown on the characteristics label.
³Bleed the air from the piping of the gas train, con-
necting a plastic tube to the pressure test point
1)(Fig. 27) of the minimum gas pressure switch.
Take the vent tube outside the building so you can
notice the smell of gas.
³Connect two lamps or testers to the two gas line so-
lenoids to check the exact moment at which voltage
is supplied.
This operation is unnecessary if each of the two so-
lenoids is equipped with an indicator light that sig-
nals voltage passing through.
The first start-up 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.
Check the correct working of the adjustment, com-
mand and safety devices.
An excessive gas pressure can dam-
age the components of the gas train
and lead to a risk of explosion.
Before starting up the burner, it is good
practice to adjust the gas train so that
ignition takes place in conditions of
maximum safety, i.e. with gas delivery at
the minimum.
WARNING WARNING
Fig. 23
Minimum gas pressure switch
Fig. 24
Maximum gas pressure switch
Fig. 25
Air pressure switch
Fig. 26
Pressure switch PVP Kit
D3854
D3856
D3855 D3855
Fig. 27
D8098
1
DANGER
WARNING
Start-up, calibration and operation of the burner
5