Table of Contents
Advertisement
Quick Links
Istruzioni per installazione, uso e manutenzione
Installation, use and maintenance instructions
Instructions d'installation, d'utilisation et d'entretien
I
Bruciatori industriali policombustibile gasolio/gas
GB
Light Oil/Gas dual fuel industrial burners
F
Brûleurs industriels polycombustible fioul/gaz
Funzionamento modulante
Modulating operation
Fonctionnement modulant
DB 6 LSE C13
20023874 (2) - 06/2010
Advertisement
Table of Contents
Related Manuals for Riello DB 6 LSE C13
Summary of Contents for Riello DB 6 LSE C13
- Page 1 Istruzioni per installazione, uso e manutenzione Installation, use and maintenance instructions Instructions d'installation, d'utilisation et d'entretien Bruciatori industriali policombustibile gasolio/gas Light Oil/Gas dual fuel industrial burners Brûleurs industriels polycombustible fioul/gaz Funzionamento modulante Modulating operation Fonctionnement modulant DB 6 LSE C13 20023874 (2) - 06/2010...
- Page 2 General warnings Informations about the This handbook is a supplement to the burner and must always be kept handbook with it. It should be read carefully as it supplies important information for installation, use and maintenance; it should be kept in a safe place for future consultation.
-
Page 3: Table Of Contents
Index CHAPTER Introduction ....pagina 3 Selection code descriptions ..... . 3 Specification of the burner type and coding . -
Page 4: Introduction
Selection code description Specification of the burner type and coding TYPE CODE DB 6 TC A-0 DB 6 LSE C13 20004685 Combustive air supply A-0 = from below A-90 = from the right A-180 = from above A-270 = from the left... -
Page 5: Burner Description
Burner description Technical data Model DB 6 Capacity Min./Max. natural gas [kW] 4000 ÷ 7800 Output adjustment Modulating Combustibile Natural gas (G 20) - Net calorific value 10 kWh/Nm Natural gas (G 25) - Net calorific value 8,6 kWh/Nm Combustive air temperature Max. -
Page 6: Burner Components
CHAPTER Burner description Burner components D10366 Fig. 2 Air box 12 Air pressure switch Cover 13 Maximum gas pressure switch Gas delivery regulator 14 Maximum oil pressure switch on return circuit Control box base for electrical connections 15 Pressure gauge nozzle return Boiler attachment flange 16 Pressure gauge nozzle delivery Combustion head... -
Page 7: Overall Dimensions - Burner Weight
Fixing to the boiler Gas supply 3 5 0 1 6 0 4 3 5 DN 80 D7549 D10368 D3974 Fig. 4 Fig. 5 Fig. 6 The weight of the burner is shown in table: Modello DB 6 LSE C13... -
Page 8: Air Side Pressure Drop
CHAPTER Burner description Air side pressure drop (taken upstream from the completely open air damper) D8326 mbar 1000 2000 4000 6000 8000 Potenza bruciatore Pb [kW] Fig. 7 The pressure curves refer to the different adjustment conditions for the combustion head in accordance to the table on page 14. Refer to Paragraph 5.1. -
Page 9: Gas Side Pressure Drop
CHAPTER Burner description Gas side pressure drop Gas pressure on the basis of the Head pressure drop maximum output developed by D8327 the burner is given by the curves in Fig. 8. It represents the pressure drop in the combustion head. Natural gas G 20 - Net calorific value = 10 kWh/Nm mbar... -
Page 10: Installation
Installation Installation positions Horizontal installation The burner is available in various models to be installed with the air intake from below or above. Blast tube length (Fig. 10) 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 fettling. -
Page 11: Fuel Supply
Fuel supply General gas supply layout (example) Fig. 12 D7543 max. 500 mbar 0,5 ÷ 4 bar Anti-vibration joint PGm Minimum gas pressure switch Gas filter Gas butterfly valve HPG High gas pressure regulator Pressure limiting valve with outlet into the environment Low gas pressure regulator Pressure gauge Leak detection control device... -
Page 12: Choice Of Nozzle
CAPITOLO Fuel supply Choice of nozzle In order to set the flow field in which the noz- Fig. 13 zle is to function, it is necessary to regulate D1610 the maximum and minimum pressure of the fuel on the nozzle return according to dia- gram (see Fig. -
Page 13: Hydraulic System Layout
CAPITOLO Fuel supply Hydraulic system layout Fig. 15 Pump suction Pump and nozzle return By-pass screw in pump Pump pressure governor Safety valve VS Safety valve VF Nozzle delivery Nozzle Nozzle return Pressure variator on nozzle return Servomotor for pressure variator Pressure switch on nozzle return Safety valve on nozzle return VR Safety valve on nozzle return VRS... -
Page 14: Preparation For Start Up
Preparation for start up Combustion head setting (Fig. 16) In addition to varying air flow depending on the output requested, the servomotor 3) Fig. 2 - by means of a lifting assembly - varies the setting of the combustion head. This system allows an optimal setting even at a minimum firing rate. For the same servomotor rotation, combustion head opening can be varied by moving the tie rod onto holes 1-2-3, Fig. -
Page 15: Gas Train - Pilot Connection
CHAPTER Preparation for start up Gas train - pilot connection The burner is fitted with a dedicated gas train that is fixed to the pipe coupling. It should be connected to the main train downstream the filter or the pressure regulator (depending on configuration). Oil burners (with LPG pilot) can be directly connected to the LPG cylinder. -
Page 16: Electrodes Positioning
The LMV52... is a safety device! Do not open, interfere with or modify the unit. Riello S.p.A. will not assume responsibility for any damage resulting from unauthorized interference! Risk of explosion! Incorrect configuration can lead to excessive fuel supply which might cause an explosion! Operators must be aware that incorrect settings made on the AZL5…... - Page 17 CHAPTER Preparation for start up Mechanical design The LMV52... is a microprocessor-based burner management sys- tem with matching system components for the control and supervi- sion of forced draft burners of medium to large capacity. The following components are integrated in the basic unit of the LMV52...: •...
- Page 18 CHAPTER Preparation for start up Technical data LMV52... basic unit Mains voltage AC 230 V -15 % / +10 % Mains frequency 50 / 60 Hz ±6 % Power consumption < 30 W (typically) Safety class I, with parts according to II and III to DIN EN 60730-1 Terminal loading Unit fuse F1 (internally) 6.3 AT...
-
Page 19: Actuator (Sqm48.4
CHAPTER Preparation for start up Actuator (SQM48.4..) Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes should be observed! Do not open, interfere with or modify the actuators! All activities (mounting, installation and service work, etc.) must be performed by qualified staff. Before making any wiring changes in the connection area of the SQM4..., completely isolate the burner control from the mains supply (all-polar disconnection). - Page 20 CHAPTER Preparation for start up Technical data Operating voltage AC 2 x 12 V via bus cable from the basic unit or via a separate transformer Safety class extra low-voltage with safe isolation from mains voltage Power consumption 26...34 VA Degree of protection to EN 60 529, IP 54, provided adequate cable entries are used...
-
Page 21: Pressure Switches Setting
CHAPTER Preparation for start up Pressure switches setting 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 (Fig. 23). With the burner operating at max. output, increase adjustment pressure by slowly turn- ing the relative knob clockwise until the burner locks out. -
Page 22: Periodic Checks
CHAPTER Preparation for start up Periodic checks We recommend carrying out the following checks: LIST OF MONTHLY CHECKS 1 Inspect the flame detection device and check it is undamaged and clean. 2 Check the ignition device and clean if necessary. 3 Check the right pressure levels for fuel and air. -
Page 23: Maintenance
Maintenance Problems and remedies If the burner does not work properly, first you must: check that the electric connections have been correctly performed; ensure that the fuel is delivered correctly; check that all the adjustment parameters (e.g. boiler water temperature or boiler steam pressure) are correctly set. GAS WORKING Fault Possible cause... - Page 24 CHAPTER Maintenance GAS WORKING Fault Possible cause Recommended remedy The burner repeats the starting • Mains gas pressure is near the value to which ..Reduce operating pressure the min. gas pressure switch gas is adjusted..of minimum gas pressure switch. cycle without lock out The repeated drop in pressure which follows .