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SUNTEC ENERGY SYSTEMS
 
Industrial Dual Block Oil, Gas & Dual Fuel Burner
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Product Code : 15

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Product Specification

Industrial Dual Block Oil,Gas & Dual Fuel Burner 
The new DB burners platform represents the evolution in Riello Burners industrial product range. They are dual block burners for application in big plants (district heating, hospitals) as well as in food, chemicals, textile industry for matching with hot water boilers, steam and thermal oil generators. DB series burners can be supplied with electronic or mechanical air-fuel ratio control according to customer specifi cation. DB 9-12-16-20 are equipped with pilot ignition, while for DB 4-6 models it can be supplied on demand.

DB series can work with pre-heated air up to 150°C as standard, up to 250°C with special construction. New variable geometry combustion head allows to reach < 80 mg/kWh NOx emission on natural gas operations. An hinge system for easier combustion head maintenance is available on all models. As part of the offer, various accessories (air fan, control panels, high pressure gas train, etc) are available.

Technical Data
MODEL
 DB 4
 DB 6
 DB 9
 DB 12
 DB 16
 DB 20
Burner operation mode
 Modulating
Natural gas
 1:5
 1:5
 1:6
 1:6
 1:6
 1:6
Modulation ratio at
 LPG
 1:4
 1:5
 1:5
 1:5
 1:5
 1:6
Max output
 Light oil
 1:4
 1:4
 1:4
 1:4
 1:4
 1:4
Heavy oil
 1:3
 1:3
 1:3
 1:3
 1:3
 1:3
Servomotor
 type - mechanical cam
 SQM 10
 SQM 10
 SQM 20
 SQM 20 SQM 50 SQM 50
Type - electronic cam
 MM 10004 / MM10005


Heat output
 Natural gas
 kW
 1000/
2500÷5000		 1400/
4000÷7800
 1500/
5000÷9500
 1700/
7000÷12500
 2500/
8000÷16000
 3000/
10000÷20000
LPG
 kW
 1200/
2500÷5000		 1600/
4000÷7800
 1900/
5000÷9500
 2100/
7000÷12500
 3100/
8000÷16000
 3600/
10000÷20000
Light oil
 kW
 1250/
2500÷5000		 1950/
4000÷7800
 2400/
5000÷9500
 3200/
7000÷12500
 4000/
8000÷16000
 5000/
10000÷20000
Heavy oil
 kW
 1650/
2500÷5000		 2600/
4000÷7800
 3150/
5000÷9500
 4150/
7000÷12500
 5300/
8000÷16000
 6600/
10000÷20000
Working temperature
 Min./max.
 °C
 -15/60
FUEL/AIR DATA



Light oil

 Net calorific value
 kWh/kg
 11,8
Kcal/kg
 10200
Viscosity at 20°C
 mm2/s (cSt)
 4 ÷ 6
Delivery
 kg/h
 85/212 - 424
 119/339 - 661
 127/424 - 805
 144/593 - 1059
 212/678 - 1356
 254/847 - 1695
Fuel temperature
 max. °C
 50


 Heavy oil

 Net calorific value
 kWh/kg
 11,1÷11,3
Kcal/kg
 9545÷9720
Viscosity at 20°C
 mm2/s (cSt)
 500
Delivery
 kg/h
 90/224 - 448
 125/358 - 699
 134/448 - 851
 152/627 - 1120
 224/717 - 1434
 269/896 - 1792
Fuel temperature
 max. °C
 140
Atomizing pressure
 bar
 25÷30

Natural gas (G20)
 Net calorific value
 kWh/kg
 10
Density
0,71
Gas delivery
 Nm3/h
 100/250 - 500
 140/400 - 780
 150/500 - 950
 170/700 - 1250
 250/800 - 1600
 300/1000 - 2000

Natural gas (G25)
 Net calorific value
 8,6
Density
 0,78
Gas delivery
 116/291 - 581
163/465 - 907
174/581 - 1105
194/814 - 1453
291/930 -1860
349/1163 - 2326

LPG
 Net calorific value
 25,8
Density
 2,02
Gas delivery
 Nm3/h
 39/97 - 194
54/155 - 302
58/194 - 368
66/271 -484
97/310 - 620
116/388 - 775
ELECTRICAL DATA
Electrical supply
 Ph/Hz/V
 1/50-60/230 - (1/50-60/110 on request)
Control box
 type
 LFL 1.333 - LFL 1.335 (Intermittent working) - LGK 16 (Continuos working) - Mini MK5 EVO - Mini MK6 - MK 6 EVO
Auxiliary electrical power
 kW
 0,63
Total current
 A
 2,7 - 5,7
Protection level
 IP
 54
Ignition transformer
 V1 - V2
 230 V - 1x8 KV
I1 - I2
 1,4A - 30 mA
Operation
 Intermittent (at least one stop every 24 h) - Continuos (at least one stop every 72 h)
EMISSIONS

Light oil
 CO emission
 mg/kWh
 < 110
Grade of smoke indicator
 N° Bacharach
 < 1
NOx emission
 mg/kWh
 < 185 for C20 and C23 versions

Heavy oil
 CO emission
 mg/kWh
 Depending on the fuel composition
Grade of smoke indicator
 N° Bacharach
 Depending on the fuel composition
NOx emission
 mg/kWh
 Depending on the fuel composition
G20
 CO emission
 mg/kWh
 <100
NOx emission
 mg/kWh
 < 80 for C03 and C23 versions
APPROVAL
Directive
 89/336 - 73/23 - 98/37 - 90/396 CEE
Conforming to
 EN 267 - EN 676
Certification
 --

Reference Conditions:
Temperature: 20°C - Pressure: 1013,5 mbar - Altitude: 0 m a.s.l. - Noise measured at a distance of 1 meter.

Product Specification
All Burners
  • Dual block forced draught burner, two stages progressive or modulating operation with a kit, separate supply, fully automatic, made up of:
  • Air damper for air setting with variable profile cam controlled by a servomotor version /M - mechanical cam
  • Air damper for air setting with air servomotor managed by microprocessor version /E - electronic cam
  • Variable geometry combustion head that can be set according the required output
  • Combustion head servomotor managed by microprocessor version /E - electronic cam DB16-20 only
  • Pilot burner with two gas valves and pressure regulator as standard on DB9-12-16-20 only
  • Minimum air pressure switch
  • Flame inspection window
  • Electrical interface box with ignition transformer inside
  • Opening hinge to have easier combustion head inspection and maintenance
  • IP54 protection level.
Oil Burner:
  • Phototcell for flame detection
  • Nozzle pipe
  • Safety nozzle valve
  • Oil lance without nozzle nozzle must be ordered separately
  • Valves group with safety oil valves
  • Oil capacity regulator controlled by air servomotor linkage version /M – mechanical cam
  • Oil capacity regulator with servomotor managed by microprocessor version /E – electronic cam
  • Maximum oil pressure switch on the return circuit
  • Pressure gauge on delivery and return circuit.
  • Conforming to:
  • 89/336 (2004/108) EC directive electromagnetic compatibility
  • 73/23/EC directive low voltage
  • 98/37/EC directive machinery
  • EN 267 liquid fuel burners.
Standard Equipment:
  • Screws for fixing the burner flange to the boiler
  • Thermal screen
  • Instruction handbook for installation, use and maintenance
  • Spare parts catalogue
  • Available accessories to be ordered separately
  • Flexible tubes
  • Return nozzles
  • High pressure oil filter
  • Circulation group by-pass valve
  • Check valve
  • Potentiometer kit for the servomotor.
Gas Burner:
  • Photocell for flame detection
  • Maximum gas pressure switch
  • Butterfly gas valve controlled by air servomotor linkage version M - mechanical cam
  • Butterfly gas valve with servomotor managed by microprocessor version /E - electronic cam
  • Gas pressure test point to the combustion head.
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Contact Details
SUNTEC ENERGY SYSTEMS
Sambhaav House, Nr. Judges Bunglow, Bodakdev, Ahmedabad - 380015, Gujarat, India
Phone:91-79-40009197/40009260/40009261/26871911-13
Fax:91-79-40009196/26871914
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Key Personnel
Ms. Anita Nair (Manager - Co-ordination)
Mobile:+919725343432, +919979774746

 
  
 
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