Related Manuals for Unigas LG550
Summary of Contents for Unigas LG550
- Page 1 LG550 NG550 NGX550 LGX550 IDEA Series Gas burners MANUAL OF INSTALLATION - USE - MAINTENANCE BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ M039119CE Rev. 5.3 11/2021...
-
Page 2: General Introduction
DANGERS, WARNINGS AND NOTES OF CAUTION THIS MANUAL IS SUPPLIED AS AN INTEGRAL AND ESSENTIAL PART OF THE PRODUCT AND MUST BE DELIVERED TO THE USER. INFORMATION INCLUDED IN THIS SECTION ARE DEDICATED BOTH TO THE USER AND TO PERSONNEL FOLLOWING PRODUCT INSTALLATION AND MAINTENANCE. -
Page 3: Directives And Standards
3b) FIRING WITH GAS, LIGHT OIL OR OTHER FUELS DIRECTIVES AND STANDARDS Gas burners GENERAL European directives The burner shall be installed by qualified personnel and in compliance -Regulation 2016/426/UE (appliances burning gaseous fuels) with regulations and provisions in force; wrong installation can cause -2014/35/UE (Low Tension Directive) injuries to people and animals, or damage to property, for which the -2014/30/UE (Electromagnetic compatibility Directive) -
Page 4: Symbols Used
Burner data plate Type Model Gas - Light oil burners For the following information, please refer to Year European Directives the data plate: S.Number -Regulation 2016/426/UE (appliances burning gaseous fuels) Output burner type and burner model: must be Oil Flow -2014/35/UE (Low Tension Directive) reported in any communication with the Fuel... -
Page 5: General Features
PART I: INSTALLATION PART I: INSTALLATION GENERAL FEATURES This series burners are characterised by high performaces and width in the performance curves, when the pressure in the combustion chamber is high. They are also provided with other important functional features: there are plugs which can be easily connected to the boiler and to the detecting probes, a pressure plug in the combustion chamber, all mechanical components are mounted on a plate which can be quickly taken off for maintenance. -
Page 6: Burner Type
PART I: INSTALLATION BURNERS SPECIFICATIONS Type NG550 Model (4) (5) NG - Natural gas burner (1) BURNER TYPE LG - L.P.G. burner NGX - Low NOx burners LGX - Natural gas Low NOx burners M - Natural gas (2) FUEL L - LPG TN - Single stage AB - Double stage... -
Page 7: Specifications
PART I: INSTALLATION Specifications NG550 NG550 NG550 NG550 LG550 LG550 LG550 LG550 BURNERS M-.TN... M-.TN.. M-.TN.. M-.TN.. M-.TN.. L-.TN.. L-.TN.. L-.TN.. L-.TN... 0.25 0.32 0.40 0.50 0.25 0.32 0.40 0.50 245 - 570 Output min-max kW Natural gas L.P.G. Fuel... - Page 8 PART I: INSTALLATION Low NOx burners NGX550 NGX550 NGX550 NGX550 LGX550 LGX550 LGX550 LGX550 BURNERS M-.xx... M-.xx... M-.xx... M-.xx... L-.xx... L-.xx... L-.xx... L-.xx... 0.25 0.32 0.40 0.50 0.25 0.32 0.40 0.50 132 - 490 Output min-max kW Natural gas Fuel 3B/P Gas category (see next paragraph)
-
Page 9: Performance Curves
This value must be lower or equal to the pgas value, calcula- ted before. Power kW Potenza / Output (kW) Performance curves NG550 - LG550 Single stage NG550 - LG550 Double-stage/Progressive 100 150 200 250 300 350 400 450 500 550 600 650... - Page 10 Rp 2" (50) R p 2" ( 50) Gas rate Stm Gas rate Stm L.P.G. Burners LG550 L-TN..25 Single stage LG550 L-TN..32/40/50 Single stage Rp 1"¼ (32) Rp 1"½ (40) Rp 2" (50) Rp 1" (25) Gas rate Stm...
- Page 11 PART I: INSTALLATION LG550 L-PR.. Double-stage/Progressive LG550 L-PR.. Double-stage/Progressive Rp 1"¼ (32) Rp 1"½ (40) Rp 1" (25) Rp 2" (50) Gas rate Stm Gas rate Stm Low NOx burners NGX550 Double-stage/Progressive Rp 1" (25) Rp 1"¼ (32) Rp 1"½ (40) Rp 2"...
- Page 12 A(S*) A(L*) B(S*) B(L*) ±5mm ±5mm 25/32 165 178 384 384 M10 247 NG/LG550 165 178 384 384 M10 247 165 178 384 384 M10 247 * S = measure referred to burners fitted with standard blast tube L = measure referred to burners fitted with extended blast tubeOMU...
- Page 13 Low NOx Burner Recommended boiler drilling jig and burner flange A(S*) A(L*) B(S*) B(L*) Omin ±5mm ±5mm 176 198 384 241 384 M10 247 NGX550 - LGX550 176 198 384 241 384 M10 247 176 198 384 241 384 M10 247 * S = measure referred to burners fitted with standard blast tube L = measure referred to burners fitted with extended blast tube...
- Page 14 PART I: INSTALLATION MOUNTINGS AND CONNECTIONS Packing urners are despatched in cardboard packages whose dimensions are: 1030mm x 530mm x 570mm (L x P x H) Packing cases of this type are affected by humidity; the maximum number of cases to be stacked is showed outside the packing. The following are placed in each packing case.
- Page 15 PART I: INSTALLATION GAS TRAIN CONNECTIONS This paragraph shows the gas train components which are included in the delivery and those which must be fitted by the customer. The diagram complies with regulations in force DANGER! Incorrect motor rotation can seriously damage property and injure people.ATTENTION: BEFORE EXE- CUTING THE CONNECTIONS TO THE GAS PIPE NETWORK, BE SURE THAT THE MANUAL CUTOFF VALVES ARE CLOSED.
-
Page 16: Mounting Positions
PART I: INSTALLATION MULTIBLOC DUNGS MB-DLE 405..412 Fig. 3 Fig. 4 Fig. 5 Fig. 6 MULTIBLOC DUNGS MB-DLE 415..420 Mounting 1. Loosen screws A and B do not unscrew (Fig. 3 - Fig. 4). 2. unscrew screws C and D (Fig. 3 - Fig. 4). 3. - Page 17 PART I: INSTALLATION Gas Proving System VPS504 (Option) The VPS504 check the operation of the seal of the gas shut off valves. This check, carried out as soon as the boiler thermostat gives a start signal to the burner, creates, by means of the diaphragm pump inside it, a pressure in the test space of 20 mbar higher than the supply pressure.
- Page 18 PART I: INSTALLATION Take the gas pipe TR off and put it in the new position fixing the screws VT1 and VT2VT1 VT2 (Fig. 15). UNLOCKED LOCKED Fig. 13 Fig. 14 Fig. 15 Fig. 17 Fig. 16 Unscrew the V, rotate the head of 180 ° along its axis as shown in( Fig. 16), until the hole F is found. Fit the screw again(Fig. 16 - Fig.
-
Page 19: Electrical Connections
PART I: INSTALLATION ELECTRICAL CONNECTIONS Respect the basic safety rules. make sure of the connection to the earthing system. do not reverse the phase and neutral connections. fit a differential thermal magnet switch adequate for connection to the mains. ATTENTION: before executing the electrical connections, pay attention to turn the plant’s switch to OFF and be sure that the burner’s main switch is in 0 position (OFF) too. - Page 20 PART I: INSTALLATION Single stage burner connectors: Fig. 23 - 7-poles connector Fig. 24 - Electric motor 3-pole connector Progressive burner connectors Fig. 25 - 7-poles and 4-poles connectors Fig. 26 - Electric motor 3-poles connector BURNER IN LOW FLAME SIGNALLING LAMP LOW FLAME TIME METER FAN MOTOR HIGH FLAME TIME METER...
- Page 21 PART I: INSTALLATION LOW FLAME TIME METER LINE FUSE FOR FAN MOTOR LINE FUSE AUXILIARY FUSE BURNER LINE SWITCH FAN MOTOR LINE SWITCH FAN MOTOR REMOTE CONTACTOR SIEMENS RWF40 MODULATION REGULATOR BURNER LOCKOUT SIGNALLING LAMP BURNER IN LOW FLAME SIGNALLING LAMP FAN MOTOR SD-0÷10V VOLTAGE SIGNAL...
- Page 22 PART I: INSTALLATION Combustion head pressure curves vs. the gas flow rate Curves are referred to pressure= 0mbar in the combustion head! The curves referred to the gas pressure in the combustion head, depending on the gas flow rate, are referred to the burner in the com- bustion stage (percentage of residual O in the flues as shown in the “Recommended combustion values”...
- Page 23 NG550 NGX550 Gas rate Stm LG550 L.P.G. L.P.G. rate Stm ATTENTION: before starting the burner up, be sure that the manual cutoff valves are open and check that the pres- sure upstream the gas train complies the value quoted on paragraph “Technical specifications”. Be sure that the mains switch is closed.
- Page 24 PART I: INSTALLATION Keys Valve group Cover Gas proving system Control panel Blast tube To perform the adjustments, unscrew the fixing screws and remove the burner cover.
-
Page 25: Adjustment Procedure
PART I: INSTALLATION Startup Output The start-up heat output shall not exceed 120 kW (single stage burners) or 1/3 of nominal output (double-stage, progressive or fully modulating burners). In order to comply with these requirements, burners are provided with butterfly valve and/or slow-opening safety valve. - Page 26 PART I: INSTALLATION go on adjusting air and gas flow rates: check, continuosly, the flue gas analisys, as to avoid combustion with little air; dose the air according to the gas flow rate change following the steps quoted below; drive the burner to high flame stage, by means of the thermostat TAB (except single-stage models). acting on the pressure stabiliser of the valves group, adjust the gas flow rate in the VS T(VR) high flame stage as to meet the values requested by the boiler/utilisation:...
- Page 27 PART I: INSTALLATION is towards the operator. As far as the reduced output operation, progressively move the combusiton head towards the “MIN” position, rotating clockwise the VRT screw (Fig. 33). The ID index shows how much the combustion head moved. Fig.
- Page 28 PART I: INSTALLATION While the burner is operating at the maximum output, test the gas pressure on the pressure port of the minimum gas pressure switch. Slowly close the manual cutoff valve (placed upstream the pressure switch, see gas train installation diagram), until the detected ...
-
Page 29: Burner Control Panel
PART II: OPERATION PART II: OPERATION LIMITATIONS OF USE THE BURNER IS AN APPLIANCE DESIGNED AND CONSTRUCTED TO OPERATE ONLY AFTER BEING CORRECTLY CONNEC- TED TO A HEAT GENERATOR (E.G. BOILER, HOT AIR GENERATOR, FURNACE, ETC.), ANY OTHER USE IS TO BE CONSIDE- RED IMPROPER AND THEREFORE DANGEROUS. - Page 30 PART II: OPERATION Fig. 37 - Progressive burners only Keys Mains switch ON - OFF Lockout signalling lamp Reset button for control box Gas pressure switch consent signalling lamp High flame operation signalling lamp (or air damper opening during pre-purge stage) Low flame operation signalling lamp Ignition transformer in operation signalling light EV2 opening signalling lamp...
-
Page 31: Operation
PART II: OPERATION OPERATION .BEFORE STARTING UP THE BURNER, BE SURE THAT THE MAIN SWITCH IS ON AND THE MANUAL SHUTOFF VALVES ARE OPEN. READ CAREFULLY THE “WARNINGS” NOTES ON THIS MANUAL. Set to ON position the mains switch A on the burner electrical board front panel. ... -
Page 32: Routine Operations
PART III: MAINTENANCE PART III: MAINTENANCE At least once a year carry out the maintenance operations listed below. In the case of seasonal servicing, it is recommended to carry out the maintenance at the end of each heating season; in the case of continuous operation the maintenance is carried out every 6 months. - Page 33 PART III: MAINTENANCE Removing the filter in the MULTIBLOC DUNGS MB-DLE 415 - 420 B01 1” 1/2 - 2” Check the filter at least once a year! Change the filter if the pressure difference between pressure connection 1 and 2 (Fig. 41-Fig. 42) p> 10 mbar. ...
-
Page 34: Replacing The Electrodes
PART III: MAINTENANCE scratchbrush. LOCKED UNLOCKED Fig. 45 Fig. 46 Fig. 44 Fig. 47 Fig. 48 Fig. 49 Replacing the electrodes .To remove the electrodes, proceed as follows once the combustion head is removed (see “Removing and cleaning the combustion head”... -
Page 35: Checking The Ionisation Current
PART III: MAINTENANCE Electrodes position setting ATTENTION: avoid the ignition and detection electrodes to contact metallic parts (blast tube, head, etc.), otherwise the boiler’s opera- tion would be compromised. Check the electrodes position after any intervention on the combustion head. The gap between the ignition electrode and the ground is 4 ÷... -
Page 36: Burner Exploded View
BURNER EXPLODED VIEW POSITION DESCRIPTION POSITION DESCRIPTION EXTENDED BLAST TUBE CONTROL BOX GENERATOR GASKET IGNITION TRANSFORMER THREADED GAS PIPE ACTUATOR FLANGE AIR PRESSURE SWITCH FLANGE OUTPUT CONTROLLER GAS PROVING SYSTEM PRINTED CIRCUIT BOARD COVER FIXING SCREW FRONT CONTROL PANEL AIR INTAKE FRONT CONTROL PANEL AIR INTAKE LIGHT... -
Page 38: Electrical Wiring Diagrams
PART III: MAINTENANCE ELECTRICAL WIRING DIAGRAMS Wiring diagram 18-163 - Complete key LOW FLAME TIME METER HIGH FLAME TIME METER FLAME DETECTION ELECTRODE EV1,2 GAS ELECTRO-VALVES (OR VALVES GROUP) FAN MOTOR LINE FUSE LINE FUSE LINE FUSE AUXILIARY FUSE BURNER LINE SWITCH FAN MOTOR LINE SWITCH FAN MOTOR CONTACTOR BURNER IN HIGH FLAME INDICATOR LIGHT... -
Page 46: Start-Up Program
APPENDIX SIEMENS LME11/21/22 CONTROL BOX The series of equipment LME.. is used for the starup and supervisione of START-UP PROGRAM 1- or 2- stage gas burners. The series LME.. is interchangeable with the series LGB.. and LMG.., all diagrams and accessories are interchangea- As far as the startup program, see its time diagram: ble. - Page 47 LME11 control sequence LME21 control sequence B´ B´ SB / R SB / R W / GP W / GP (LR) BV2 7101d05/0206 Control sequence Waiting time LME22 control sequence Purge time B´ TSA Ignition safety time SB / R W / GP Preignition time Postignition time...
- Page 48 LME11 connection diagram Connection diagram Error message (alarm) Fuel valve PC control RESET EK2 Remote lockout reset button Flame signal Gas pressure switch Air pressure switch Load controller K2/1 K2/2 Fan motor Control thermostat/pressurestat R / W Safety limit thermostat Limit thermostat /pressure switch Ignition transformer 7101 24 /0606...
- Page 49 CONTROL PROGRAM IN THE EVENT OF FAULT CONTROL BOX LOCKED If a fault occurs, all outputs will immediately be deactivated (in less In the event of lockout, the LME.. remains locked and the red signal lamp than 1s). (LED) will light up.The burner control can immediately be reset. This state After an interruption of power, a restart will be made with the full pro- is also mantained in the case fo mains failure.
- Page 52 C.I.B. UNIGAS S.p.A. Via L.Galvani, 9 - 35011 Campodarsego (PD) - ITALY Tel. +39 049 9200944 - Fax +39 049 9200945/9201269 web site: www.cibunigas.it - e-mail: cibunigas@cibunigas.it Note: specifications and data subject to change. Errors and omissions exceptd.