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Low NOx Two Stage Progressive & Modulating Gas Burner
The Riello Gulliver BS/M series of two stage, progressive or modulating
gas burners, is a complete range of Low NOx emission products,
developed to respond to any request for home heating, conforming to the
most severe standards regarding the reduction of polluting emissions.
This series of burners is available in three different models with an
output ranging from 26 to 250 kW, divided in three different structures.
All the models use the same components designed by Riello for the
Gulliver series. The high quality level guarantees safe working.
In developing these burners, special attention was paid to reducing
noise, the ease of installation and adjustment, to obtaining the
smallest size possible to fit into any sort of boiler available on the
market.
Two stage operation guarantees high level performance from the thermal
unit. All the models are approved by the EN 676 European Standard and
conform to European Directives, Gas Appliance, EMC, Low Voltage, Boiler
Efficiency.
All the Gulliver BS/M burners are tested before leaving the factory.
Technical Data
Model
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BS2/M
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BS3/M
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BS4/M
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Burner operation mode
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Modulating Proportional
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| Modulation ratio at max. output |
1 ÷ 3
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Servomotor
|
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type
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LANDIS SQN91
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run time
|
s
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24
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Heat output
|
kW
|
26/49 - 91
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48/79 - 195
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68/140 - 250
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Mcal/h
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22,4/42,1 - 78,2
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41,3/67,9 - 167,7
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58,5/120,4 - 215
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Working temperature
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°C min./max.
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0/40
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Fuel / air data
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Net calorific value G20 gas
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kWh/Nm3
|
10
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G20 gas density
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kg/Nm3
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0,71
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G20 gas delivery
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Nm3/h
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2,6/4,9 - 9,1
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4,8/7,9 - 19,5
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6,8/14 - 25
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Net calorific value G25 gas
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kWh/Nm3
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8,6
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G25 gas density
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kg/Nm3
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0,78
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G25 gas delivery
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Nm3/h
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3/5,5 - 10,6
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5,6/9,2 - 22,7
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7,9/16,3 - 29,1
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Net calorific value LPG gas
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kWh/Nm3
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25,8
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LPG gas density
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kg/Nm3
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2,02
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LPG gas delivery
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Nm3/h
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1/1,9 - 3,5
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1,9/3,1 - 7,6
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2,6/5,4 - 9,7
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Fan
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type
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Centrifugal with forward curve blades
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Air temperature
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max °C
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40
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Electrical data
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Electrical supply
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Ph/Hz/V
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1/50/230 ±10%
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Auxiliary electrical supply
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Ph/Hz/V
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Control box
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type
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LANDIS LMG 22
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Total electrical power
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kW
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0,180
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0,350
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0,530
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Auxiliary electrical power
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kW
|
|
|
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Protection level
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IP
|
40
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Motor electrical power
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kW
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0,09
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0,15
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0,25
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Rated motor current
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A
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0,8
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1,8
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1,9
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Motor start up current
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A
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2,68
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5,6
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8
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Motor protection level
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IP
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20
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Ignition transformer
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type
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Separated from the control box
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V1 - V2
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230V - 1 x 15 kV
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I1 - I2
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0,2 A - 25 mA
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Operation
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Intermittent (at least one stop every 24 h)
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Emissions
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Sound pressure
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dB (A)
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62
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66
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71
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Sound power
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W
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CO emission
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mg/kWh
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5
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6
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9
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NOx emission
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mg/kWh
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63
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75
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62
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Approval
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Directive
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90/396/EEC, 89/336/EEC, 73/23/EEC, 92/42/EEC
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Conforming to
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EN 676
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Certification
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CE - 0085 BN 0609
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Reference conditions
- Temperature: 20°C
- Pressure: 1013 mbar
- Altitude: 0 m a.s.l.
- Noise measured at a distance of 1 meter.
PRODUCT SPECIFICATIONBurner
Monobloc, gas burners, completely automatic, high/low progressive operation mode or fully modulating by using a regulator:
- Fan with forward curve blades
- Cover lined with sound proofing material
- Digital control box
- Servomotor to drive the air damper to fully closed position at stand by, low and high fire position
- Single phase electric motor 230 V, 50 Hz
- Combustion head fitted with:
- Stainless steel head cone, resistant to high temperatures
- Ignition electrodes
- Ionisation probe
- gas distributor
- flame stability disk
- Flame inspection window
- Adjustable air pressure switch, with graduated selector, to
guarantee burner lock out in the case of insufficient combustible air
- Protection filter against radio interference
- IP 40 electric protection level.
Gas train
Fuel supply line in the Multibloc configuration, fitted with:
- Filter
- Pressure stabiliser
- Minimum gas pressure switch
- Safety valve
- One stage working valve
- Self-adapting regulator, to adjust the gas flow following the air flow.
Approval
Conforming to European Directives
- 90/396/EEC (gas)
- 89/336/EEC (electromagnetic compatibility)
- 73/23/EEC (low voltage)
- 92/42/EEC (efficiency).
Standard equipment
- Flange with insulating gasket
- Screws and nuts for flange to be fixed to boiler
- Screw and nut for flange
- Blue plastic tube
- G 1/8 union elbow
- 4-pin plug
- 7-pin plug
- Instruction handbook for installation, use and maintenance
- Spare parts catalogue.
Available accessories to be ordered separately
- Extended head kit
- LPG kit
- Alternative combustion head kit
- Ground fault interrupter kit
- Accessories for modulating operation (RWF 40, temperature and pressure probe)
- Seal control kit.
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