Riello GS20/M Quick start guide

2546001 (1) - 10/2008
Istruzioni per installazione, uso e manutenzione
Montage und Bedienungsanleitung
Manuel d’entretien
Installation, use and maintenance instructions
Instrucciones para la instalación, uso y mantenimiento
Forced draught gas burners
Bruciatori di gas ad aria soffiata
Gas-Gebläsebrenner
Brûleurs gaz à air soufflé
Quemadores de gas de aire soplado
CODE - CODICE MODEL - MODELLO - MODELL
MODELE - MODELO TYPE - TIPO - TYP
3091960 GS20/M - HEATER 1960 D
GB
I
D
F
E
Two stage progressive or modulating operation
Funzionamento bistadio progressivo o modulante
Zweistufig-gleitender oder modulierender Betrieb
Fonctionnement à 2 allures progressif ou modulant
Funcionamiento a dos llamas progresivas o modulante

2546001
1GB
INDEX
1. BURNER DESCRIPTION
Two stage progressive operation mode or fully modulating by regulator, available as accessory.
1.1 BURNER EQUIPMENT
Flange with insulating gasket. . . . N° 1 Screws and nuts for flange to be fixed to boiler . . . N° 4
Screw and nut for flange . . . . . . . N° 1 7 pin plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N° 1
Hinge. . . . . . . . . . . . . . . . . . . . . . N° 1 4 pin plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N° 1
Screw for fixing the cover . . . . . . N° 1 6 pin plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N° 1
Cable grommet . . . . . . . . . . . . . . N° 1
1. BURNER DESCRIPTION. . . . . . . . . . . . 1
1.1 Burner equipment . . . . . . . . . . . . . . . . . 1
2. TECHNICAL DATA . . . . . . . . . . . . . . . . 2
2.1 Technical data . . . . . . . . . . . . . . . . . . . . 2
2.2 Accessories . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Overall dimensions . . . . . . . . . . . . . . . . 2
2.4 Firing rates. . . . . . . . . . . . . . . . . . . . . . . 3
3. INSTALLATION . . . . . . . . . . . . . . . . . . . 5
3.1 Boiler fixing . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Gas feeding line . . . . . . . . . . . . . . . . . . . 5
4. ELECTRICAL WIRING . . . . . . . . . . . . . 6
4.1 Electrical system . . . . . . . . . . . . . . . . . . 6
4.2 Electrical connection . . . . . . . . . . . . . . . 7
4.3 Probe-electrode positioning . . . . . . . . . . 8
5. BURNER SETTINGS . . . . . . . . . . . . . . . 8
5.1 Combustion head setting. . . . . . . . . . . . . 8
5.2 Setting of the air damper servomotor . . . 9
5.3 Commissioning . . . . . . . . . . . . . . . . . . . . 9
5.4 Combustion adjustment. . . . . . . . . . . . . . 10
5.5 Burner start-up . . . . . . . . . . . . . . . . . . . . 11
5.6 Min. air pressure switch . . . . . . . . . . . . . 11
5.7 Max. air pressure switch . . . . . . . . . . . . . 11
6. MAINTENANCE . . . . . . . . . . . . . . . . . . . 11
7. FAULTS / SOLUTIONS. . . . . . . . . . . . . . 12
®CE marking according to Gas Appliance Directive 90/396/EEC.
®The burner is approved for intermittent operation as per Directive EN 676.
®The burner meets protection level of IP 40, EN 60529.
®According to directives: EMC 89/336/EEC, Low Voltage 73/23/EEC, Machines 98/37/EEC and
Efficiency 92/42/EEC.
®Gas train according to EN 676.
1 √ Air damper servomotor
2 √ Air-damper
3 √ 6 pole socket for gas-train
4 √ 7 pole socket for electrical
controls
5 √ 4 pole socket for high-low power
6 √ Power regulator of RWF 40
7 √ Grommet
8 √ Lock-out lamp and reset button
9 √ Screw for fixing the cover
10 √ Min. air pressure switch
11 √ Max. air pressure switch
NOTE
The cable grommet (7) and the screw for fixing the cover (9) supplied with the burner, must be fitted to the
same side as the gas train.
1
72
68
D4021
Fig. 1
5
4
3
9
11
10

2546001
2GB
2. TECHNICAL DATA
2.1 TECHNICAL DATA
For gas family 3 (LPG) ask for separate kit.
2.2 ACCESSORIES (optional)
OUTPUT POWER REGULATOR KIT:
under modulating operation, the burner automatically adapts to one of an infinite number of firing rates
between the low and high flame output position, thus ensuring stable operating conditions in terms of tem-
perature or pressure.
Two components should be ordered:
√ Power regulator to install to the burner.
√ Probe to install to the boiler.
TYPE 1960 D
Thermal power (1) kW 22/42 √ 105 43/82 √ 194
kcal/h 18.900/ 36.100 √ 90.300 37.000/ 70.520 √ 166.840
Natural gas (Famiglia 2) Net heat value: 10 kWh/Nm3
Pressure: min. 10 mbar √ max. 360 mbar
Electrical supply Single phase, ~ 60Hz 220V Ø10%
Motor Run current 0.7 A
2830 rpm - 297 rad/s
Run current 1.6 A
3250 rpm - 340 rad/s
Capacitor 4 µF4µF
Ignition transformer Primary 230 V √ 45 VA
Secondary 1 x 15 kV √ 25 mA
Absorbed electrical power 0.13 kW 0.25 kW
(1) Reference conditions: Temp. 20°C - Barometric pressure 1013 mbar √ Altitude 0 m above sea level
COUNTRY IT - DK GB DE FR IE
GAS CATEGORY II2H3P II2H3P II2E3P II2Er3P II2H3P
PRESSURE G20 20 - 360 20 - 360 20 - 360 20/25 - 360 20 - 360
G31 28/37 - 360 37 - 360 50 - 360 30 - 360 37 - 360
PARAMETER TO
BE REGULATED
PROBE REGULATOR
Range Type Code Type Code
Temperature √100...+500 °C PT 100 3010110 RWF40 3001074
Pressure 0...2.5 bar Output probe 4...20 mA 3010213
0...16 bar Output probe 4...20 mA 3010214
Flange Burner
305 110 347
µ 185
130 33 61
45°
120
262
11
160
Rp 3/4
204
142
D5173
45°
2.3 OVERALL DIMENSIONS 729T50
µ
105

2546001
3GB
2.4 FIRING RATES (as EN 676)
Flange Burner
350 120 389170
155
33 67
45°
45°
212
µ
125
298
11
170
Rp 3/4
230
152
D5092
200
1960 D
Thermal power
Gas pressure in the
combustion head – mbar
D6220
Thermal power
Gas pressure in the
combustion head – mbar
kcal/h
kW
D6225
0
1
2
3
4
5
30.000 50.000 70.000 110.000
6040 80 100 120
170.000
140 160 180
6
200
90.000 130.000 150.000
1960 D
kcal/h
kW
– 0.5
4.0
3.0
2.0
1.0
0
5.0
16.300
10
– 0.5
20 30 40 50 60 70 80 90 100 110
34.400 51.600 68.800 86.000
729 T50

2546001
4GB
TEST BOILER
The working field has been defined according to EN 676 standard.
COMMERCIAL BOILERS
The burner-boiler matching is assured if the boiler conforms to EN 303 and the combustion chamber dimen-
sions 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 dimensions given in EN 676, please con-
sult the manufacturers.
CORRELATION BETWEEN GAS PRESSURE AND BURNER OUTPUT
To obtain the maximum output, a gas head pressure of 4.6 mbar, relatively to type 729T50, is measured with
the combustion chamber at 0 mbar using gas G20 with a net heat value of 10 kWh/Nm3.
Thermal power
5
kcal/h
kW
4
3
2
D6226
5
4
3
2
1
0
30.000 50.000 70.000 110.000 kcal/h
6040 80 100 kW 120
170.000
140 160 180 200
90.000 130.000 150.000
6
7
1960 D
729 T50
D6221
16.300
10
1
0
20 30 40 50 60 70 80 90 100 110
34.400 51.600 68.800 86.000
Thermal power
Gas pressure in the
combustion head – mbar
Gas pressure in the
combustion head – mbar

2546001
5GB
3. INSTALLATION
3.1 BOILER FIXING
3.2 GAS FEEDING LINE
GAS TRAIN ACCORDING TO EN 676
The gas train is supplied separately, for its adjustment see the enclosed instructions.
GAS TRAIN MATCHED
BURNER
CONNECTIONS
USE
TYPE CODE INLET OUTLET
MB-VEF 407 B01 3970535 GS10-20/M Rp 3/4 Rp 3/4 Natural gas and LPG
MB-VEF 412 B01 3970536 GS20/M Rp 3/4 Rp 3/4 Natural gas high capacity 120 kW
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
equipped insulating gasket (3).
HINGE ASSEMBLY
S7393
13 2
AB
D5098
1-Electrical connection for pressure
switch
2- Electrical connection for valves
3- Pressure switch
4- Inlet flange
5- Test point connection upstream of filter
6- Filter
7- Type plate
8- Pressure connection (air)
9- Setting screw, ratio V
10 - Test point connection
11 - Test point connection
12 - Setting screw, zero point adjustment N
13 - Pressure connection for furnace
pressure
14 - Pressure connection (gas)
15 - Outlet flange
16 - Test point connection
17 - Operation indicator LED
18 - Impulse line
S7614

2546001 6GB
4. ELECTRICAL WIRING
4.1 ELECTRICAL SYSTEM, (as set up by the manufacturer)
D8018
XP7 – 7 pole socket
XP4 – 4 pole socket
XP6 – 6 pole socket
MB – Auxiliary terminal block
S1 – Switch for:
MAN = manual operation
AUT = automatic operation
OFF = stand by
S2 – Button for:
– = power reduction
+ = power increase
MV – Fan motor
TB – Burner-earth
SO – Ionisation probe
CN... – Connectors
TA – Ignition transformer
PA –Min. air pressure switch
PAM –Max. air pressure switch
C– Motor capacitor
SM –Servomotor
ATTENTION:
³Do not swap neutral and phase over, follow the diagram
shown carefully and carry out a good earth connection.
³The section of the conductors must be at least 1mm2.
(Unless requested otherwise by local standards and legisla-
tion).
³The electrical wiring carried out by the installer must be in
compliance with the rules in force in the country.
TESTING
Check the shut-down of the burner by opening the thermo-
stats, and the lock-out by opening the connector (CN3) inser-
ted in the red cable of the probe placed outside of the control
box.
NOTES
The burners have been type-approved for intermittent opera-
tion. This means they must stop at least once every 24 hours
in order to allow the electrical control box to check its efficien-
cy on start-up. The boiler limit thermostat (TL) normally en-
sures the burner halts. If this does not happen a time switch
halting the burner at least once every 24 hours must be ap-
plied in series to limit thermostat (TL).

2546001
7GB
4.2 ELECTRICAL CONNECTION, (as set up by the installer)
D7137
PS –Remote manual reset
MB –Burner terminal block
X7 √ 7 pin plug
X4 √ 4 pin plug
X6 √ 6 pin plug
h2 √ 2nd stage hourcounter
TR √ High-low mode control
device system
h1 √ 1st stage hourcounter
S√ Remote lock-out signal
IN –Manual burner stop switch
TL –Limit control device system
WITHOUT REGULATOR (high-low progressive mode operation)
WITH REGULATOR (fully modulating mode operation)
PS –Remote manual reset
MB –Burner terminal block
X4 – 4 pin plug
T6A √Fuse
TS –Safety control device system
PG –Min. gas pressure svitch
VR –Adjustment valve
VS –Safety valve
X7 – 7 pin plug
BT –Temperature probe
BP –Pressure probe
Do not connect any contact
between T6 and T8 at the
4 pin plug and between T1
and T2 at the 7 pin plug, in
order to avoid interference
with the regulator.
ATTENTION
If the boiler has a the 7 pin plug, it should be replaced with the one supplied with the burner.
WARNING
~ 60Hz 220V

2546001
8GB
4.3 PROBE-ELECTRODE POSITIONING
5. BURNER SETTINGS
5.1 COMBUSTION HEAD SETTING
Factory calibration is set for medium power;
according to the boiler output:
Loosen screw (A) and shift the elbow (B) such
that the rear surface of the head assembly
casting (C) coincides with the desired notch.
Tighten screw (A).
Example:
The burner type 729 T50 is installed in a 77 kW
boiler.
The burner will have to deliver about 85 kW,
considering an efficiency of 90%.
The diagram indicates, that for this output the
elbow (B) is adjusted to set-point 4.
NOTE
The diagram is indicative only.
The head setting may require adjustment to
suit the boiler characteristics.
D4046
Ignition electrode
WARNING 2 – 3 mm
Ionization probe
Probe
Electrode
A
Diffuser
=
=
B
TYPE A B
729 T50
~
40 mm 2.2
1960 D
~
47 mm 3.7
Set point
02134
180
140
120
150.000
70.000
kcal/h kW
D6227
5
200
110.000
100
80
130.000
90.000
160
170.000
02134
90
80
70
60
90.000
80.000
40.000
kcal/h kW
D6223
5
100
110
60.000
50
40
85
70.000
50.000
729 T50
1960 D
Set point
S7015
C
A
B

2546001
9GB
5.2 SETTING OF THE AIR DAMPER SERVOMOTOR (see fig. 2)
CAM II assures the fully closed position of the air damper, when the burner is
shut down (stand by). It is adjusted by the factory at 0°. DO NOT ALTER.
CAM III adjusts the air damper for the ignition and for the minimum output. It is
set at 20° by the factory. Do not decrease that value; it can be increased a lit-
tle, following the need of the application.
CAM I limits the rotation at the maximum output. It is adjusted at 90° by the
factory. DO NOT INCREASE THAT VALUE: the burner can be damaged.
5.3 COMMISSIONING
After completing both the electrical and gas valve connections, set the minimum air and the gas pressure
switches at minimum value; the maximum air pressure switch must be first set at maximum value. These
will be adjusted only at the end of commissioning procedure.
Connect a manometer to the gas pressure test point situated on the burner.
1) For guidance the following table shows:
√ the capacity required by the application;
√ the minimum firing rate achieved for each capacity;
√ approximate gas pressure measured at the combustion head, depending on the maximum capacity
required;
√ the setting for the air damper.
(G) These values refer to a combustion chamber with 0 [mbar] back pressure at maximum output.
TYPE
Thermal power Min output Gas pressure on
combustion head
Air damper
adjustment
kW kW mbar (G) Set point
729T50
42 22 1.4 4
60 26 2.4 5
81 30 3.2 6
106 35 3.7 8
1960 D
81 43 3.2 5.25
159 47.8 4.6 7
170.3 48.9 5.1 max
STAND-BY CAM II (Blue)
FIRST STAGE CAM III (Orange)
SECOND STAGE CAM I (Red)
D4047
Red
Orange
Blue
Fig. 2
NOTE
The servomotor is equipped with two micrometric
screws for a careful setting of CAM II (Blue) and
CAM III (Orange).

2546001
10 GB
2) For the maximum capacity required, first set the head (section 5.1), and then the manual air damper
as per the table at page 9.
3) Select the manual (MAN) mode operation, and switch ON the burner.
4) When the burner is alight, press the (+) button to manually drive the servomotor to the high fire posi-
tion and check that the gas pressure also increases.
5) Check the gas flow rate at high fire. To set the correct flow rate use the screw adjustments Vand N on
the valve body (mainly V). Increasing the setting of either Vor Nincreases the gas flow.
6) Adjust the manual air damper to give the required CO2level in the flue products. If adjusting the air
damper alters the gas flow rate then adjust Vaccordingly.
7) Decrease the servomotor position to low fire by pushing the (–) button. Check the gas flow rate and
adjust if necessary, with screw N only, to give the required CO2level in the flue products.
8) If the low fire output is then more or less than required, adjust CAM III (Orange) accordingly. Any
adjustment of screw Nwill affect the high fire gas rate.
9) Return the servomotor to the high fire position. Re-adjust the high fire gas rate using only screw V.
10) Again return the servomotor to the low fire position and re-adjust the low fire gas rate using only screw N.
11) Repeat steps (9) and (10) two or three times until no re-adjustment of screws Vand Nis necessary.
12) Finally return the selector switch to the automatic (AUT) mode position.
5.4 COMBUSTION ADJUSTMENT
In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjustment
and testing must be carried out observing the instruction manual of the boiler, including verification of the
CO and CO2concentration in the flue gases, their temperatures and the average temperature of the water
in the boiler.
It is advisable to set the burner according to the type of gas used and following the indications of the table:
IONIZATION CURRENT
The minimum current necessary for the control box operation is 2 ±A. The burner normally supplies a
higher current value, so that no check is needed.
Anyway, if you want to measure the ionization current, you have to open the connector (CN3) (see electrical
scheme page 6) fitted on the wire and insert a microammeter.
EN 676 AIR EXCESS:
max. output λð 1.2 – min. output λð 1.3
GAS Theoretical max. CO2
0 % O2
Setting CO2% CO
mg/kWh
NOx
mg/kWh
λ= 1.2 λ= 1.3
G 20 11.7 9.7 9.0 100 170
G 30 14.0 11.6 10.7 100 230
G 31 13.7 11.4 10.5 100 230
Probe
Connector
Control box
terminal strip
D5006
1

2546001
11 GB
5.5 BURNER START-UP
5.6 MIN. AIR PRESSURE SWITCH
Adjust the air pressure switch after having performed all other burner adjustments with the air pressure switch
set to the start of the scale. With the burner operating at the minimum power, slowly turn knob clockwise until
burner locks out. Then turn the knob anti-clockwise by about 20% of the set point and subsequently check to
see if burner has started correctly. If the burner locks out again, turn the knob anti-clockwise a little bit more.
5.7 MAX. AIR PRESSURE SWITCH
The over pressure switch must be set after all other adjustments have been made. Its purpose is to cause
the burner to shut down if the combustion chamber pressure increases above normal operational values.
Begin with the switch at the highest setting, with the burner working at the maximum output, adjust the dial
anti-clockwise, decreasing its value until the burner shuts down. Now increase the value by one set point
and re-start the burner. If the burner shuts down due to the pressure surge in the combustion chamber cau-
sed by the ignition gas, check that the start gas rate is less than 25% of the main gas rate. If it is, increase
the value on the over pressure switch by a further half a set point and repeat the test.
NOTE:
To comply with the Appliance Standard Pr EN 1020, the CO value must not exceed 0.1% under normal
operational conditions.
Attention:
As a rule, the air pressure switch must prevent the air pressure from lowering below 80% of the adjustment
value as well as preventing the CO in the fumes from exceeding 1% (10.000 ppm).
To check this, insert a combustion analyser into the chimney, slowly close the fan suction inlet (for example with
cardboard) and check that the burner locks out, before the CO in the fumes exceeds 1%.
6. 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 interruptions for 10 min. and set rightly all the components stated in this
manual. Then carry out a combustion check verifying:
GContent of CO2 (%) GContent of CO (ppm) GFlue gas temperature (°C).
TL
Motor
TR
Ignition transformer
High fire
Valve
30s
2.5s
D6222
20s 25s
3s
5s
11s
3s max.
Air damper motor
2
1
0
{
Low fire

2546001
12 GB
7. FAULTS / SOLUTIONS
The control box has a self-diagnostic system, by which it is possible to easily check the faults and find the
solutions.
To use this function, wait for a minimum of 10 sec after the lock out, then push the reset button for 3 sec.
After releasing the button, the RED LED will begin to flash, as shown in the following schedule.
The LED provide a blink code each 3sec.
The blink codes give the information of the possible faults, as follows:
BLINK CODE POSSIBLE CAUSE
2

The flame does not stabilize at the end of the safety time:
√ faulty or soiled ionization probe;
√ faulty or soiled fuel valves;
√ neutral/phase exchange;
√ poor burner regulation.
3

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

Minimum air pressure switch does not open or extraneous light on burner start-up:
√ air pressure switch faulty;
√ air pressure switch incorrectly adjusted.
5
 Extraneous light during pre-purging, or control box faulty.
7

Loss of flame during operation:
√ poor burner regulation;
√ faulty or soiled fuel valves;
√ short circuit between ionization probe and earth.
18


Minimum air pressure switch opens during pre-purging or operation:
√ air pressure switch incorrectly regulated.
19


Faulty on output contacts of control box:
√ wiring error.
20


Control box faulty.
        
Press lockout reset
button for > 3s Approx. 3sBlink code Blink code
Red fault LED
waiting time 10s

2546001
1I
INDICE
1. DESCRIZIONE DEL BRUCIATORE
Bruciatore di gas con funzionamento bistadio progressivo o, modulante con l»applicazione di un kit regola-
tore di potenza.
1.1 MATERIALE A CORREDO
Flangia con schermo isolante . . . . . . . N° 1 Viti e dadi per flangia di fissaggio alla caldaia . . . . N° 4
Vite e dado per flangia. . . . . . . . . . . . . N° 1 Spina 7 poli . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N° 1
Cerniera . . . . . . . . . . . . . . . . . . . . . . . N° 1 Spina 4 poli . . . . . . . . . . . . . . . . . . . . . . . . . . . . .N°1
Vite per fissaggio cofano . . . . . . . . . . . N° 1 Spina 6 poli . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N° 1
Passacavo. . . . . . . . . . . . . . . . . . . . . . N° 1
1. DESCRIZIONE DEL BRUCIATORE. . . . 1
1.1 Materiale a corredo . . . . . . . . . . . . . . . . 1
2. DATI TECNICI . . . . . . . . . . . . . . . . . . . . 2
2.1 Dati tecnici . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Accessori . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Dimensioni . . . . . . . . . . . . . . . . . . . . . . . 2
2.4 Campi di lavoro . . . . . . . . . . . . . . . . . . . 3
3. INSTALLAZIONE. . . . . . . . . . . . . . . . . . 5
3.1 Fissaggio alla caldaia. . . . . . . . . . . . . . . 5
3.2 Linea di alimentazione gas. . . . . . . . . . . 5
4. SCHEMI ELETTRICI . . . . . . . . . . . . . . . 6
4.1 Impianto elettrico . . . . . . . . . . . . . . . . . . 6
4.2 Collegamenti elettrici . . . . . . . . . . . . . . . 7
4.3 Posizionamento sonda elettrodo . . . . . . 8
5. TARATURE BRUCIATORE . . . . . . . . . . . 8
5.1 Regolazione testa . . . . . . . . . . . . . . . . . . 8
5.2 Regolazione servomotore serranda aria . 9
5.3 Prima accensione . . . . . . . . . . . . . . . . . . 9
5.4 Controllo della combustione . . . . . . . . . . 10
5.5 Programma di avviamento. . . . . . . . . . . . 11
5.6 Pressostato aria di minima . . . . . . . . . . . 11
5.7 Pressostato aria di massima . . . . . . . . . . 11
6. MANUTENZIONE . . . . . . . . . . . . . . . . . . 11
7. ANOMALIE / RIMEDI . . . . . . . . . . . . . . . 12
®Marcatura CE secondo Direttiva Gas 90/396/CEE.
®Il bruciatore risponde al grado di protezione IP 40 secondo EN 60529.
®Il bruciatore è omologato per funzionamento intermittente secondo la Normativa EN 676.
®Conforme alle Direttive: CEM 89/336/CEE, Bassa Tensione 73/23/CEE, Macchine 98/37/CEE e Rendi-
mento 92/42/CEE.
®Rampa gas conforme a EN 676.
1 √ Sevomotore serranda aria
2 √ Serranda aria
3 √ Presa 6 poli per rampa
4 √ Presa 7 poli per
collegamenti elettrici
5 √ Presa 4 poli per
alta-bassa potenza
6 √ Regolatore di potenza RWF 40
7 √ Passacavo
8 √ Pulsante di sblocco con
segnalazione di blocco
9 √ Vite per fissaggio carenatura
10 √ Pressostato aria di minima
11 √ Pressostato aria di massima
NOTE
Il passacavo (7) e la vite per fissaggio carenatura (9) forniti a corredo del bruciatore, vanno montati dalla
stessa parte della rampa gas.
Fig. 1
1
72
68
D4021
5
4
3
9
11
10

2546001
2I
2. DATI TECNICI
2.1 DATI TECNICI
Per gas della famiglia 3 (GPL) richiedere kit a parte.
2.2 ACCESSORI (optional)
KIT REGOLATORE DI POTENZA:
con il funzionamento modulante, il bruciatore adatta automaticamente la potenza erogata tra il suo valore
massimo e minimo, mantenendo costante il parametro, temperatura o pressione, da controllare.
Due componenti devono essere ordinati:
√ Regolatore di potenza da installare sul bruciatore.
√ Sonda da installare sulla caldaia.
TIPO 1960 D
Potenza termica (1) kW 22/42 … 105 43/82 … 194
kcal/h 18.900/36.100 … 90.300 37.000/70.520 … 166.840
Gas naturale (Famiglia 2) Pci: 10 kWh/Nm3
Pressione: min. 10 mbar √ max. 360 mbar
Alimentazione elettrica Monofase, ~60Hz 220V Ø10%
Motore 0,7 A assorbiti
2830 g/min - 297 rad/s
1,6 A assorbiti
3250 g/min - 340 rad/s
Condensatore 4 µF4µF
Trasformatore d»accensione Primario 230 V √ 45 VA
Secondario 1 x 15 kV √ 25 mA
Potenza elettrica assorbita 0,13 kW 0,25 kW
(1) Condizioni di riferimento: Temperatura 20°C - Pressione barometrica 1013 mbar √ Altitudine 0 m s.l.m.
PAESE IT - DK GB DE FR IE
CATEGORIA GAS II2H3P II2H3P II2E3P II2Er3P II2H3P
PRESSURE G20 20 - 360 20 - 360 20 - 360 20/25 - 360 20 - 360
G31 28/37 - 360 37 - 360 50 - 360 30 - 360 37 - 360
PARAMETRI
DA REGOLARE
SONDA REGOLATORE
Campo di
regolazione Tipo Codice Tipo Codice
Temperatura √100...+500 °C PT 100 3010110 RWF40 3001074
Pressione 0...2,5 bar Potenza sonda 4...20 mA 3010213
0...16 bar Potenza sonda 4...20 mA 3010214
Flangia Bruciatore
305 110 347
µ 185
130 33 61
45°
120
262
11
160
Rp 3/4
204
142
D5173
45°
µ
105
2.3 DIMENSIONI 729T50

2546001
3I
2.4 CAMPI DI LAVORO (secondo EN 676)
Flangia Bruciatore
350 120 389170
155
33 67
45°
45°
212
µ
125
298
11
170
Rp 3/4
230
152
D5092
200
1960 D
Potenza termica
Pressione in camera di
combustione - mbar
Potenza termica
Pressione in camera di
combustione - mbar
kcal/h
kW
D6225
0
1
2
3
4
5
30.000 50.000 70.000 110.000
6040 80 100 120
170.000
140 160 180
6
200
90.000 130.000 150.000
1960 D
– 0,5
D6220
kcal/h
kW
4,0
3,0
2,0
1,0
0
5,0
16.300
10
– 0,5
20 30 40 50 60 70 80 90 100 110
34.400 51.600 68.800 86.000
729 T50

2546001
4I
CALDAIE DI PROVA
Il campo di lavoro è stato ottenuto su caldaie di prova secondo norma EN 676.
CALDAIE COMMERCIALI
L»abbinamento bruciatore-caldaia non pone problemi se la caldaia è conforme alla norma EN 303 e le dimen-
sioni della sua camera di combustione sono prossime a quelle previste nella norma EN 676.
Se invece il bruciatore viene abbinato ad una caldaia commerciale non conforme alla norma EN 303 o con
dimensioni della camera di combustione nettamente più piccole di quelle indicate nella norma EN 676, consul-
tare i costruttori.
CORRELAZIONE TRA PRESSIONE DEL GAS E POTENZIALITÀ
Per avere la massima potenzialità occorrono 4.6 mbar, relativamente al bruciatore tipo 729 T50, misurati
al manicotto con camera di combustione a 0 mbar e gas G20 √ Pci = 10 kWh/Nm3.
Potenza termica
Potenza termica
D6226
5
4
3
2
1
0
30.000 50.000 70.000 110.000 kcal/h
6040 80 100 kW 120
170.000
140 160 180 200
90.000 130.000 150.000
6
7
1960 D
729 T50
Pressione gas alla testa
di combustione in mbar
Pressione gas alla testa
di combustione in mbar
5
kcal/h
kW
4
3
2
D6221
16.300
10
1
0
20 30 40 50 60 70 80 90 100 110
34.400 51.600 68.800 86.000

2546001
5I
3. INSTALLAZIONE
3.1 FISSAGGIO ALLA CALDAIA
3.2 LINEA DI ALIMENTAZIONE GAS
RAMPA GAS SECONDO EN 676
La rampa gas viene fornita a parte e per la sua regolazione vedere le istruzioni che l»accompagnano.
RAMPA GAS BRUCIATORE
ABBINABILE
ATTACCHI IMPIEGO
TIPO CODICE INGRESSO USCITA
MB-VEF 407 B01 3970535 GS10-20/M Rp 3/4 Rp 3/4 Gas naturale e GPL
MB-VEF 412 B01 3970536 GS20/M Rp 3/4 Rp 3/4 Gas naturale max. portata 120 kW
Separare la testa di combustione dal resto del bruciatore
togliendo il dado (1) e arretrare il gruppo (A).
Fissare il gruppo (B) alla piastra (2) della caldaia interpo-
nendo lo schermo isolante (3) dato a corredo.
MONTAGGIO CERNIERA
S7393
132
AB
D5098
1 - Collegamento pressostato gas
2 - Collegamento valvola
3 - Pressostato gas
4 - Flangia
5 - Punto presa pressione filtro
6 - Filtro
7 - Targhetta
8 - Attacco pressione aria
9 - Vite di regolazione V
10 - Attacco presa pressione
11 - Attacco presa pressione
12 - Vite di regolazione N(punto zero)
13 - Attacco presa pressione
camera di combustione
14 - Attacco presa pressione gas
15 - Flangia
16 - Attacco presa pressione
17 - Led di segnalazione alimenta-
zione elettrovalvola
18 - Collegamenti ad impulsi
S7614

2546001 6I
4. SCHEMI ELETTRICI
4.1 IMPIANTO ELETTRICO, (eseguito in fabbrica)
XP7 – Presa 7 poli
XP4 – Presa 4 poli
XP6 – Presa 6 poli
MB – Morsettiera ausiliaria
S1 – Interruttore per
funzionamento:
MAN = manuale
AUT = automatico
OFF = spento
S2 – Pulsante per:
– = diminuzione potenza
+ = aumento potenza
MV – Motore ventilatore
TB – Terra bruciatore
SO – Sonda di ionizzazione
CN... – Connettori
TA – Trasformatore di accensione
PA – Pressostato aria di min.
PAM – Pressostato aria di max.
C– Condensatore motore
SM –Servomotore
ATTENZIONE:
³Non scambiare il neutro con la fase, rispettare esattamen-
te lo schema indicato ed eseguire un buon collegamento
di terra.
³La sezione dei conduttori deve essere di min. 1 mm2. (Salvo
diverse indicazioni di norme e leggi locali).
³I collegamenti elettrici eseguiti dall’installatore devono rispet-
tare le norme vigenti nel paese.
COLLAUDO
Verificare l’arresto del bruciatore aprendo i termostati ed il blocco
aprendo il connettore (CN3) inserito nel filo rosso della sonda,
posto all’esterno dell’apparecchiatura.
NOTE:
I bruciatori sono stati omologati per funzionamento intermittente.
Ciò significa che devono fermarsi almeno 1 volta ogni 24 ore per
permettere all’apparecchiatura elettrica di effettuare un controllo
della propria efficienza all’avviamento. Normalmente l’arresto del
bruciatore viene assicurato dal termostato limite (TL) della calda-
ia. Se così non fosse, è necessario applicare in serie a (TL) un
interruttore orario che provveda all’arresto del bruciatore almeno
una volta ogni 24 ore.
D8018