Riello GS20 Quick start guide

Installation, use and maintenance instructions
Instrucciones de instalación, montaje y funcionamiento
2902754 (4) - 09/2014
Forced draught gas burner
Quemador de gas de aire soplado
One stage operation
Funcionamiento de una llama
CODE - CÓDIGO MODEL - MODELO TYPE - TIPO
3755683 GS20 556T80
GB
ES

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INDEX
1. BURNER DESCRIPTION
Gas burner with one stage working.
1.1 BURNER EQUIPMENT
Insulating gasket . . . . . . . . . . . . . No. 1 Screws and nuts for flange to be fixed to boiler . . No. 4
Cable grommet . . . . . . . . . . . . . .No. 1 Screw for fixing the cover. . . . . . . . . . . . . . . . . . . No. 1
Hinge. . . . . . . . . . . . . . . . . . . . . . No. 1 Pipe fitting for gas train . . . . . . . . . . . . . . . . . . . . No. 1
1. BURNER DESCRIPTION . . . . . . . . . . . 1
1.1 Burner equipment . . . . . . . . . . . . . . . . . 1
2. TECHNICAL DATA . . . . . . . . . . . . . . . . 2
2.1 Technical data . . . . . . . . . . . . . . . . . . . . 2
2.2 Overall dimensions . . . . . . . . . . . . . . . . 2
2.3 Working field . . . . . . . . . . . . . . . . . . . . . 2
2.4 Correlation between gas pressure and
burner output . . . . . . . . . . . . . . . . . . . . 3
3. INSTALLATION . . . . . . . . . . . . . . . . . . 3
3.1 Boiler fixing . . . . . . . . . . . . . . . . . . . . . . 3
3.2 Probe-electrode positioning. . . . . . . . . . 4
3.3 Gas feeding line . . . . . . . . . . . . . . . . . . 4
3.4 Electrical wiring. . . . . . . . . . . . . . . . . . . 5
3.5 Fixing the electrical wiring . . . . . . . . . . . 6
4. WORKING . . . . . . . . . . . . . . . . . . . . . . . 6
4.1 Combustion head setting . . . . . . . . . . . . 6
4.2 Air damper setting . . . . . . . . . . . . . . . . . 6
4.3 Combustion check . . . . . . . . . . . . . . . . . 7
4.4 Burner start-up cycle . . . . . . . . . . . . . . . 7
4.5 Start-up cycle diagnostics. . . . . . . . . . . . 7
4.6 Resetting the control box and using
diagnostics . . . . . . . . . . . . . . . . . . . . . . . 8
5. MAINTENANCE. . . . . . . . . . . . . . . . . . . 9
6. FAULTS / SOLUTIONS . . . . . . . . . . . . . 10
NOTES:
– Gas train can be installed on the right or on the left of the burner.
– The cable grommet (4) and the screw for fixing the cover (5) supplied with the burner, must be fitted to
the same side of the gas train.
1– Air-damper
2– Screws for fixing the air-damper
3– Cable clamps
4– Cable grommet
5– Screw for fixing the cover
6– Air pressure switch
7– Terminal board
8– Control box
9– Reset button with lock-out lamp
Fig. 1
2
1
2
D4178
5 4 3
9
8
7
6
❱The burner meets protection level of IP X0D (IP 40), EN 60529.
❱
The burner is approved for intermittent operation as per Directive EN 676.

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2. TECHNICAL DATA
2.1 TECHNICAL DATA
2.2 OVERALL DIMENSIONS
2.3 WORKING FIELD
Thermal power (1) 81 – 220 kW - 70,000 – 189,000 kcal/h
Natural gas (Family 2) Net heat value: 8 – 12 kWh/Nm
3
-7,000 – 10,340 kcal/Nm
3
Pressure: min. 20 mbar - max. 100 mbar
Electrical supply Single phase, 220V ±10% ~ 60Hz
Motor 220V / 2.2A
Capacitor 4 µF
Ignition transformer Primary 220V / 1.25A - Secondary 8 kV / 25 mA
Absorbed electrical power 0.43 kW
(1) Reference conditions: Temp. 20°C - Barometric pressure 1013 mbar – Altitude 0 m above sea level.
FlangeBurner
350 120 389 170
155
33 67
45°
45°
ø
125
298
11
170
Rp 3/4
230
152
■
280
D4257
200
■
Combustion head extension, supplied separately.
D5212
0
Thermal power
0.8
1.6
2.4
3.2
4.0
4.8
70,000 90,000 110,000 130,000 kcal/h
80 120100 140 160 kW180
170,000
200 220
150,000 190,000
Pressure in the combustion
chamber – mbar

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2.4 CORRELATION BETWEEN GAS PRESSURE AND BURNER OUTPUT
To obtain the maximum output, a gas head pressure of 6.9 mbar is measured with the combustion chamber at
0 mbar using gas G20 with a net heat value of 10 kWh/Nm
3
(8,570 kcal/Nm
3
).
3. INSTALLATION
THE BURNER MUST BE INSTALLED IN CONFORMITY WITH LEGISLATION AND LOCAL STANDARDS.
3.1 BOILER FIXING
3
D5213
4
5
6
7
8
Thermal power
70,000 90,000 110,000 130,000 kcal/h
80 120100 140 160 kW180
170,000
200 220
150,000 190,000
Gas pressure in the
combustion head – mbar
Boiler door must have a max. thickness of 100 mm,
refractory lining included.
If thickness is greater (max. 260 mm), a combustion
head extension must be fitted, which is supplied
separately.
IMPORTANT
■
Separate the combustion-head assembly
from the burner body by removing nut (1) and
removing group (A).
■
Fix the head assembly group (B) to the boiler
(2) insert the supplied insulating gasket (3).
HINGE
S7393
ASSEMBLY
1 3 2
A B
D5097

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3.2 PROBE - ELECTRODE POSITIONING
3.3 GAS FEEDING LINE
D5104
Ignition electrode
WARNING 2 – 3 mm
Ionization probe
Probe
Electrode
3.7
~
47 mm
Diffuser
=
=
1– Gas supply pipe
2– Manual cock
3– Filter
4– Pressure governor
5– Pressure test point
6– Gas pressure switch
7– Safety valve
8– Adjustment valve
9– Pressure coupling test point
1
D5959
6432
9
5 7 8

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3.4 ELECTRICAL WIRING
KEY TO LAY-OUT
PG – Minimum gas pressure switch
S3 – Remote lock-out signal
(220V - 0.5 A max.)
T6A – Fuse
TL – Limit thermostat
TS – Safety thermostat
V10 – Safety valve
V11 – Adjustment valve
Ionization probe
Ignition transformer
Electrode
Motor
Capacitor Burner
220V ~ 60Hz
Terminal board
Air pressure
White
Blue
Brown
VERSION
FOR GAS LEAK CONTROL DEVICE
(DUNGS VPS 504)
Control box
RMG 88.620A2
D4352
Connector
earth
Black
In the case of phase-phase
feed, a bridge must be fitted
on the control box terminal
board between terminal 6 and
the earth terminal.
ATTENTION
switch
ATTENTION:
❱
Do not swap neutral and phase over, follow the diagram shown care-
fully and carry out a good earth connection.
❱
The section of the conductors must be at least 1mm². (Unless requested
otherwise by local standards and legislation).
❱
The electrical wiring carried out by the installer must be in compliance
with the rules in force in the country.
❱
Verify that the burner stops by operating the boiler control thermostats
and that the burner locks out by separating the red ionisation probe lead
connector.
NOTES
The burners have been type-approved for intermittent operation.
This means they must stop at least once every 24 hours in order to allow the
electrical control box to check its efficiency on start-up.
The boiler limit thermostat (TL) normally ensures the burner halts. If this does
not happen a time switch halting the burner at least once every 24 hours must
be applied in series to limit thermostat (TL).
TO BE DONE BY
THE INSTALLER
CARRIED-OUT
IN THE FACTORY

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3.5 FIXING THE ELECTRICAL WIRING
All the electrical wires, which are to be connected to the terminal board (7, fig. 1, page 1) should pass through
the cable grommet (4, fig. 1). All the electrical wires, which are to be connected into the terminal board must be
gripped in the cable clamps (3, fig. 1). This is molded on both sides to allow the use of various diameter cables.
4. WORKING
4.1 COMBUSTION HEAD SETTING
Loose the screw (A), move the elbow (B) so that the rear plate
of the coupling (C) coincides with the set point.
Tighten the screw (A).
Example:
The burner is installed on a 155 kW boiler with an efficiency of
90%, the burner input is about 172 kW using the diagram, the
combustion set point is 3.
The diagram is to be used only for initial settings, to improve air pressure switch operation or improve combus-
tion, it may be necessary to reduce this setting (set point toward position 0)
4.2 AIR DAMPER SETTING (See fig. 2)
The regulation of the air-rate is made by adjusting the air damper (1), after loosing the screws (2).
When the optimal regulation is reached, screw tight the screws (2).
Cable clamps
ACB A CB
A = ø 8 B = ø 11 C =
ø 16
D5052
S7015
C
A
B
1
D5231
2
2
Fig. 2
kcal/h kW
Set point
0 21 3 4
240
140
120
100
80
160
200,000
140,000
120,000
100,000
70,000
D5109
5
180
200
220
80,000
160,000
180,000
172

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4.3 COMBUSTION CHECK
CO
2
It is advisable to not exceed 10% of CO
2
(natural gas), in order to avoid the risk that small changes of the
adjustments due, for instance, at draught variation, may cause combustion with insufficient air and consequently
formation of CO.
CO - Not exceeding 100 mg/kWh (93 ppm).
IONIZATION CURRENT
The minimum current necessary for the control box operation is 3 µA.
The burner normally supplies a higher current value, so that no check is needed. However, if you want to meas-
ure the ionization current, you must open the connector fitted to the red wire and insert a microammeter.
4.4 BURNER START-UP CYCLE
When flame-failure occurs during working, shut down takes place within one second.
4.5 START-UP CYCLE DIAGNOSTICS
During start-up, indication is according to the followin table:
COLOUR CODE TABLE
Sequences Colour code
Pre-purging
● ● ● ● ● ● ● ● ● ● ●
Ignition phase
● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ●
Operation, flame ok
❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
Operating with weak flame signal.
❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍
Electrical supply lower than
~
170V
● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ●
Lock-out
▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲
Extraneous light
▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲
Index: ❍ Off ● Yellow ❑ Green ▲ Red
Probe
Connector
Terminal board
of control-box
D5006
10
3s40s40smax. 2s max. 2s
D4172
Lock-out, due to ignition failureNormal
Thermostat
Motor
Ignition transformer
Valves
Flame
Lock-out

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4.6 RESETTING THE CONTROL BOX AND USING DIAGNOSTICS
The control box features a diagnostics function through which any causes of malfunctioning are easily iden-
tified (indicator: RED LED).
To use this function, you must wait at least 10 seconds once it has entered the safety condition (lock-out),
and then press the reset button.
The control box generates a sequence of pulses (1 second apart), which is repeated at constant 3-second
intervals.
Once you have seen how many times the light pulses and identified the possible cause, the system must
be reset by holding the button down for between 1 and 3 seconds.
The methods that can be used to reset the control box and use diagnostics are given below.
RESETTING THE CONTROL BOX
To reset the control box, proceed as follows:
➣
Hold the button down for between 1 and 3 seconds.
The burner restarts after a 2-second pause once the button is released.
If the burner does not restart, you must make sure the limit thermostat is closed.
VISUAL DIAGNOSTICS
Indicates the type of burner malfunction causing lock-out.
To view diagnostics, proceed as follows:
➣
Hold the button down for more than 3 seconds once the red LED (burner lock-out) remains steadily lit.
A yellow light pulses to tell you the operation is done.
Release the button once the light pulses. The number of times it pulses tells you the cause of the mal-
function, indicated in the table below.
SOFTWARE DIAGNOSTICS
Reports the life of the burner by means of an optical link with the PC, indicating hours of operation, number
and type of lock-outs, serial number of control box etc ...
To view diagnostics, proceed as follows:
➣
Hold the button down for more than 3 seconds once the red LED (burner lock-out) remains steadily lit.
A yellow light pulses to tell you the operation is done.
Release the button for 1 second and then press again for over 3 seconds until the yellow light pulses
again.
Once the button is released, the red LED will flash intermittently with a higher frequency: only now can
the optical link be activated.
Once the operations are done, the control box’s initial state must be restored using the resetting procedure
described above.
BUTTON PRESSED FOR CONTROL BOX STATUS
Between 1 and 3 seconds Control box reset without viewing visual diagnostics.
More than 3 seconds Visual diagnostics of lock-out condition:
(LED pulses at 1-second intervals).
More than 3 seconds starting from
the visual diagnostics condition Software diagnostics by means of optical interface and PC (hours of operation, malfunctions etc. can be viewed)
   
Press reset
for > 3s 3sPulses Pulses
RED LED on
wait at least 10s
Interval
Lock-out

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The sequence of pulses issued by the control box identifies the possible types of malfunction, which are
listed in the table below.
5. MAINTENANCE
The burner requires periodic maintenance carried out by a qualified and authorised technician in conformity
with legislation and local standards.
Maintenance is essential for the reliability of the burner, avoiding the excessive consumption of fuel and
consequent pollution.
Before carrying out any cleaning or control always first switch off the electrical supply to the
burner acting on the main switch of the system.
THE BASIC CHECKS ARE:
Leave the burner working without interruption for 10 min., checking the right settings of all the components
stated in this manual. Then carry out a combustion check verifying:
●
CO
2
(%) content
●
Smoke temperature at the chimney
●
CO content (ppm).
6. FAULTS / SOLUTIONS
Here below you can find some causes and the possible solutions for some problems that could cause a fail-
ure to start or a bad working of the burner. A fault usually makes the lock-out lamp light which is situated
inside the reset button of the control box (9, fig. 1, page 1).
When lock out lamp lights the burner will attempt to light only after pushing the reset button. After this if the
burner functions correctly, the lock-out can be attributed to a temporary fault.
If however the lock out continues the cause must be determined and the solution found.
SIGNAL PROBABLE CAUSE
2 pulses

The flame does not stabilise at the end of the safety time:
– faulty ionisation probe;
– faulty or soiled gas valves;
– neutral/phase exchange;
– faulty ignition transformer
– poor burner regulation (insufficient gas).
3 pulses

Minimum air pressure switch does not close:
– make sure VPS trips to produce lockout;
– air pressure switch faulty;
– air pressure switch incorrectly regulated;
– fan motor does not run;
– maximum air pressure switch operating.
4 pulses

Min. air pressure switch does not open or light in the chamber before firing:
– air pressure switch faulty;
– air pressure switch incorrectly regulated.
7 pulses

Loss of flame during operations:
– poor burner regulation (insufficient gas);
– faulty or soiled gas valves;
– short circuit between ionisation probe and earth.
10 pulses


– Wiring error or internal fault.

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BURNER STARTING DIFFICULTIES
Signal Problem Possible cause Recommended remedy
2 blinks Once the pre-purging
phase and safety time
have passed, the
burner goes into lock-
out without the appear-
ance of the flame
1 - The operation solenoid lets little gas . . . .
through Increase
2 - One of the two solenoid valves does . . . .
not open. Replace
3 - Gas pressure too low . . . . . . . . . . . . . . . . Increase pressure at governor
4 - Ignition electrode incorrectly adjusted . . . Adjust, see page 4
5 - Electrode grounded due to broken. . . . . .
insulation Replace
6 - High voltage cable defective . . . . . . . . . . Replace
7 - High voltage cable deformed by high. . . .
temperature Replace and protect
8 - Ignition transformer defective. . . . . . . . . . Replace
9 - Incorrect valve or transformer electrical. .
wiring Check
10 - Defective control box . . . . . . . . . . . . . . . . Replace
11 - A closed valve upline the gas train. . . . . . Open
12 - Air in pipework . . . . . . . . . . . . . . . . . . . . . Bleed air
13 - Gas valves unconnected or with . . . . . . .
interrupted coil Check connections or replace coil
3 blinks The burner does not
switch on, and the
lockout appears
14 - Air pressure switch in operating position . Adjust or replace
The burner switches
on, but then stops in
lockout
- Air pressure switch inoperative due to
insufficient air pressure:
15 - Air pressure switch incorrectly adjusted. . Adjust or replace
16 - Pressure switch pressure test point . . . . .
pipe blocked Clean
17 - Poorly adjusted head . . . . . . . . . . . . . . . . Adjust
18 - High pressure in the furnace . . . . . . . . . . Connect air pressure switch to fan
suction line
Lockout during pre-
purging phase 19 - Defective motor control contactor. . . . . . . (only three-phase version) Replace
20 - Defective electrical motor. . . . . . . . . . . . . Replace
21 - Motor lockout (defective electrical motor). Replace
4 pulses The burner switches
on, but then stops in
lockout
22 - Flame simulation . . . . . . . . . . . . . . . . . . . Replace the control box
Lockout when burner
stops 23 - Permanent flame in the combustion. . . . . head or flame simulation Eliminate persistence of flame or replace control box
7 blinks The burner goes into
lockout immediately
following the appear-
ance of the flame
24 - The operation solenoid lets little. . . . . . . .
gas through Increase
25 - Ionisation probe incorrectly adjusted . . . . Adjust, see page 4
26 - Insufficient ionisation (less than 5 A) . . . . Check probe position
27 - Earth probe. . . . . . . . . . . . . . . . . . . . . . . . Withdraw or replace cable
28 - Burner poorly grounded . . . . . . . . . . . . . . Check grounding
29 - Phase and neutral connections inverted . Invert them
30 - Defective flame detection circuit. . . . . . . . Replace the control box
Burner goes into lock-
out during operation 31 - Probe or ionisation cable grounded . . . . . Replace worn parts
10 blinks The burner does not
switch on, and the
lockout appears
32 - Incorrect electrical wiring . . . . . . . . . . . . . Check
The burner goes into
lockout 33 - Defective control box . . . . . . . . . . . . . . . . Replace
34 - Presence of electromagnetic . . . . . . . . . .
disturbances in the thermostat lines Filter or eliminate

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N.B.: If problems still occur after all of the above checks have been made, check the electrical connec-
tions on the plug and sockets, the damper and burner motor, gas control wiring ignition transformer
and external interlocks, if the burner still fails to function, replace the control box.
No blink The burner does not
start 35 - No electrical power supply . . . . . . . . . . . . Close all switches - Check connec- tions
36 - A limiter or safety control device is open. . Adjust or replace
37 - Line fuse blocked . . . . . . . . . . . . . . . . . . . Replace
38 - Defective control box. . . . . . . . . . . . . . . . . Replace
39 - No gas supply . . . . . . . . . . . . . . . . . . . . . . Open the manual valves between
contactor and train
40 - Mains gas pressure insufficient. . . . . . . . . Contact your GAS COMPANY
41 - Minimum gas pressure switch fails . . . . . .
to close Adjust or replace
The burner continues
to repeat the start-up
cycle, without lockout
42 - The gas pressure in the gas mains lies
very close to the value to which the mini-
mum gas pressure switch has been set.
The sudden drop in pressure after valve
opening causes temporary opening of the
pressure switch itself, the valve immedi-
ately closes and the burner comes to a
halt. Pressure increases again, the pres-
sure switch closes again and the ignition
cycle is repeated. And so on
Reduce the minimum gas pressure
switch intervention pressure.
Replace the gas filter cartridge.
Ignition with pulsations 43 - Poorly adjusted head . . . . . . . . . . . . . . . . Adjust. See page 6
44 - Ignition electrode incorrectly adjusted. . . . Adjust, see page 4
45 - Incorrectly adjusted fan air damper: too
much air Adjust
46 - Output during ignition phase is too high . . Reduce
Signal Problem Possible cause Recommended remedy

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NORMAL OPERATION / FLAME DETECTION TIME
The control box has a further function to guarantee the correct burner operation (signal: GREEN LED perma-
nently on).
To use this function, wait at least ten seconds from the burner ignition and then press the control box button for
a minimum of 3 seconds.
After releasing the button, the GREEN LED starts flashing as shown in the figure below.
The pulses of the LED constitute a signal spaced by approximately 3 seconds.
The number of pulses will measure the probe DETECTION TIME since the opening of gas valves, according to
the following table:
KIT INTERFACE ADAPTER RMG TO PC Code 3002719
SIGNAL FLAME DETECTION TIME This is updated in every burner start-up.
Once read, the burner repeats the start-up cycle by
briefly pressing the control box button.
WARNING
If the result is > 2s, ignition will be retarded.
Check the adjustment of the hydraulic brake of the
gas valve, the air damper and the combustion head
adjustment.
1 blink 0.4s
2 blinks 0.8s
6 blinks 2.8s
GREEN LED on
wait at least 10s Press button for > 3s signal signal
Interval
3s

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INDICE
1. DESCRIPCIÓN DEL QUEMADOR
Quemador de gas de una llama de funcionamiento.
1.1 MATERIAL SUMINISTRADO
Junta aislante . . . . . . . . . . . . . . . . N° 1 Tornillos y tuercas para brida fijación a la caldera . . . N° 4
Anillo pasacable. . . . . . . . . . . . . . N° 1 Tornillos de fijación envolvente . . . . . . . . . . . . . . . . . . N° 1
Bisagra . . . . . . . . . . . . . . . . . . . . N° 1 Racord de reducción para rampa de gas . . . . . . . . . . N° 1
1. DESCRIPCIÓN DEL QUEMADOR . . . . 1
1.1 Material suministrado . . . . . . . . . . . . . . 1
2. DATOS TÉCNICOS . . . . . . . . . . . . . . . 2
2.1 Datos técnicos . . . . . . . . . . . . . . . . . . . 2
2.2 Dimensiones. . . . . . . . . . . . . . . . . . . . . 2
2.3 Campo de trabajo . . . . . . . . . . . . . . . . . 2
2.4 Correlación entre presión del gas y
potencia . . . . . . . . . . . . . . . . . . . . . . . . 3
3. INSTALACIÓN . . . . . . . . . . . . . . . . . . . 3
3.1 Fijación a la caldera . . . . . . . . . . . . . . . 3
3.2 Posicionamiento sonda electrodo. . . . . 4
3.3 Línea de alimentación del gas . . . . . . . . 4
3.4 Instalación eléctrica. . . . . . . . . . . . . . . . 5
3.5 Fijación de los cables eléctricos . . . . . . 6
4. FUNCIONAMIENTO . . . . . . . . . . . . . . . . . . . . 6
4.1 Regulación cabezal de combustión. . . . . .. . . . 6
4.2 Regulación del registro del aire . . . . . . . .. . . . 6
4.3 Control de la combustión . . . . . . . . . . . . .. . . . 7
4.4 Programa de puesta en marcha . . . . . . . .. . . . 7
4.5 Diagnóstico del programa de puesta en marcha. . 7
4.6 Desbloqueo de la caja de control y uso de
la función de diagnóstico . . . . . . . . . . . . . . . 8
5. MANTENIMIENTO . . . . . . . . . . . . . . . . .. . . . 9
6. ANOMALIAS / SOLUCIONES . . . . . . . . . . . 10
1– Registro de aire
2– Tornillos de fijación del registro
del aire
3– Sujetador de cables
4– Anillo pasacable
5– Tornillo de fijación del envolvente
6– Presóstato aire
7– Regleta de conexión
8– Caja de control
9– Botón de rearme con señalización
de bloqueo
NOTAS:
– La rampa de gas se puede instalar tanto a la derecha como a la izquierda del quemador.
– El anillo pasacable (4) y el tornillo para la fijación del envolvente (5) entregados de serie, se instalan en
la misma parte que la rampa de gas.
Fig. 1
2
1
2
D4178
5 4 3
9
8
7
6
❱Nivel de protección del quemador IP X0D (IP 40) según EN 60529.
❱El quemador está homologado para el funcionamiento intermitente según la Normativa EN 676.

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2. DATOS TÉCNICOS
2.1 DATOS TÉCNICOS
2.2 DIMENSIONES
2.3 CAMPO DE TRABAJO
Potencia térmica (1) 81 ÷ 220 kW - 70.000 ÷ 189.000 kcal/h
Gas natural (Familia 2) Pci: 8 ÷12 kWh/Nm
3
-7.000 ÷ 10.340 kcal/Nm
3
Presión: mín. 20 mbar – máx. 100 mbar
Alimentación eléctrica Monofasica, 220V ±10% ~ 60Hz
Motor 220V / 1,2A
Condensador 4 µF
Transformador de encendido Primario 220V / 1,25A - Secundario 8 kV / 25 mA
Potenza eléctrica absorbida 0,43 kW
(1) Condiciones de referencia: Temperatura 20°C - Presi ón barométrica 1013 mbar – Altitud 0 m sobre
nivel del mar.
BridaQuemador
350 120 389 170
155
33 67
45°
45°
ø
125
298
11
170
Rp 3/4
230
152
■
280
D4257
200
■
Cabezal de combustión larga que se debe pedir por separado.
D5212
0
Potencia térmica
0,8
1,6
2,4
3,2
4,0
4,8
70.000 90.000 110.000 130.000 kcal/h
80 120100 140 160 kW180
170.000
200 220
150.000 190.000
Sobrepresión cámara
combustión – mbar

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2.4 CORRELACIÓN ENTRE PRESIÓN DEL GAS Y POTENCIA
Para obtener la potencia máxima se requieren 6,9 mbar medidos en el manguito con cámara de combus-
tión a 0 mbar y gas G20 - Pci = 10 kWh/Nm
3
(8.570 kcal/Nm
3
).
3. INSTALACIÓN
EL QUEMADOR SE DEBE INSTALAR DE CONFORMIDAD CON LAS LEYES Y NORMATIVAS LOCALES.
3.1 FIJACIÓN A LA CALDERA
3
D5213
4
5
6
7
8
Potencia térmica
70.000 90.000 110.000 130.000 kcal/h
80 120100 140 160 kW180
170.000
200 220
150.000 190.000
Presión del gas al cabezal
de combustión - mbar
La puerta de la caldera debe tener un grosor máximo
de 100 mm incluido el revestimiento refractario.
En el caso en que el grosor fuera mayor (máx.
260 mm) es necesario utilizar una extensión para la
tobera, que se debe pedir por separado.
ATENCIÓN
■
Separe el cabezal de combustión del resto del
quemador quitando la tuerca (1) y extraiga el
grupo (A).
■
Fije el grupo (B) a la placa (2) de la caldera,
interponiendo la junta aislante (3) suministrada
de serie.
MONTAJE DE
S7393
LA BISAGRA
1 3 2
A B
D5097

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3.2 POSICIONAMIENTO SONDA - ELECTRODO
3.3 LÍNEA DE ALIMENTACIÓN DEL GAS
D5104
Electrodo de encendido
ATENCI Ó N 2 ÷ 3 mm
Sonda
Sonda
Electrodo
3,7
~
47 mm
Difusor
=
=
1– Entrada de gas
2– Válvula manual
3– Filtro
4– Estabilizador de presión
5– Toma presión
6– Presóstato de gas
7– Electroválvula de seguridad
8– Electroválvula de regulación
9– Toma presión en quemador
1
D5959
6432
9
5 7 8

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3.4 INSTALACIÓN ELÉCTRICA
Sonda
Transformador
Electrodo
Motor
Condensador
Tierra
220V ~ 60Hz
Regleta de conexión
Presóstato
Blanco
Azul
Marrón
VARIANTE
PARA EL CONTROL DE LA ESTANQUEIDAD
DE LAS VÁLVULAS (DUNGS VPS 504)
Caja de control
RMG 88.620A2
D4352
Conector
quemador
Negro
de encendido
ATENCIÓN:
❱
No intercambie el neutro con la fase, respete exactamente el
esquema indicado y realice una buena conexión a tierra.
❱
La sección de los conductores debe ser de 1 mm
2
mín. (Salvo indica-
ciones diferentes de las normas y leyes locales).
❱
Las conexiones eléctricas llevadas a cabo por el instalador deberán re-
spetar las normas vigentes en el país.
❱
Controle que el quemador se apague abriendo el termóstato de la
caldera, y controle el bloqueo abriendo el conector conectado en el hi-
lo rojo de la sonda, situado afuera de la caja de control.
NOTAS:
Los quemadores han sido homologados para el funcionamiento intermi-
tente, lo que significa que deben detenerse por lo menos 1 vez cada 24
horas para permitir que la caja de control verifique su propia eficiencia en
la puesta en marcha. Normalmente, la parada del quemador es garanti-
zada por el termostato límite (TL) de la caldera.
Por el contrario, es necesario aplicar en serie a (TL) un interruptor horario
que detenga el quemador por lo menos una vez cada 24 horas.
LEYENDA
PG – Presóstato gas de mínima
S3 – Señalización de bloqueo a
distancia (230V - 0,5A max.)
T6A – Fusible
TL – Termostato de regulación
TS – Termostato de seguridad
V10 – Electroválvula de seguridad
V11 – Electroválvula de regulación
En caso de alimentación fase-
fase es necesario efectuar un
puente en la regleta de cone-
xiones de la caja de control
entre el borne 6 y el borne de
tierra.
ATENCIÓN
aire
A CARGO
DEL INSTALADOR
EJECTUADO
EN FÁBRICA

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3.5 FIJACIÓN DE LOS CABLES ELÉCTRICOS
Todos los cables eléctricos que se conectan a la regleta de conexiones (7, fig. 1, pág. 1) deben pasar por el
anillo pasacable (4, fig. 1).
Los cables se bloquean fijándolos con el sujetador de cables respectivo (3, fig. 1), situado debajo de la regleta
de conexiones conformado de ambos lados para poder recibir cables de distinto diámetro.
4. FUNCIONAMIENTO
4.1 REGULACIÓN CABEZAL DE COMBUSTIÓN
Afloje los tornillos (A), desplace el codo (B) de manera que
el plano trasero del manguito (C) coincida con la marca
deseada. Apriete los tornillos (A).
Ejemplo:
El quemador está instalado en una caldera de 155 kW.
Considerando un rendimiento del 90%, el quemador deberá
suministrar alrededor de 172 kW. En el diagrama se puede
observar que para esta potencia, la regulación se debe
efectuar en la marca 3.
El diagrama es sólo indicativo y se debe emplear para una primera regulación
Para garantizar un funcionamiento correcto del presóstato de aire podría ser necesario disminuir la
abertura del cabezal de combustión (marca hacia la pos. 0).
4.2 REGULACIÓN DEL REGISTRO DEL AIRE (Ver fig. 2)
El caudal de aire se regula actuando sobre el registro del aire (1) tras aflojar los tornillos (2).
Una vez alcanzada la regulación ideal, enroscar completamente los tornillos (2).
ACB A CB
A = ø 8 B = ø 11 C =
ø 16
D5052
Sujetador
de cables
S7015
C
A
B
1
D5231
2
2
Fig. 2
kcal/h kW
N° marca
0 21 3 4
240
140
120
100
80
160
200.000
140.000
120.000
100.000
70.000
D5109
5
180
200
220
80.000
160.000
180.000
172