Unigas IDEA Series Manual Of Installation - Use - Maintenance
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Unigas IDEA Series Manual Of Installation - Use - Maintenance

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LG/NG/NGX280
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IDEA Series
Gas burners
MANUAL OF INSTALLATION - USE - MAINTENANCE
BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ
M039132CE Rev. 3.3 10/2015

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Summary of Contents for Unigas IDEA Series

  • Page 1 LG/NG/NGX280 LG/NG/NGX350 LG/NG/NGX400 IDEA Series Gas burners MANUAL OF INSTALLATION - USE - MAINTENANCE BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ M039132CE Rev. 3.3 10/2015...

  • Page 2: Table Of Contents

    ......................3 DANGERS, WARNINGS AND NOTES OF CAUTION PART I: INSTALLATION ............................6 How to interpret the burner’s “Performance curve” ........................7 Checking the proper gas train size............................. 7 BURNER FEATURES ................................... 8 Burner model identification ....................................8 Technical specifications ................................8 Low NOx burners Technical specifications ..........................

  • Page 3: Dangers, Warnings And Notes Of Caution

    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 4 DIRECTIVES AND STANDARDS do not leave the equipment exposed to weather (rain, sun, etc.) Gas burners unless expressly required to do so; European directives do not allow children or inexperienced persons to use equipment; -2009/142/EC (Gas Directive) The unit input cable shall not be replaced by the user. -2014/35/UE (Low Tension Directive) In case of damage to the cable, switch off the unit and contact qualified -2014/30/UE (Electromagnetic compatibility Directive)
  • Page 5 -EN 60204-1:2006 (Safety of machinery – Electrical equipment of machi- nes.) Failure to observe the warning may -CEI EN 60335-1 (Specification for safety of household and similar electri- result in serious injuries or death. DANGER! cal appliances); -CEI EN 60335-2-102 (Household and similar electrical appliances. Safety.

  • Page 6: Part I: Installation

    C.I.B. UNIGAS - M039132CD PART I: INSTALLATION GENERAL FEATURES These burners are characterised by high performaces and width in the performance curves, when the pressure in the combustion chamber is high. They are also characterised for 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 7: How To Interpret The Burner's "Performance Curve

    C.I.B. UNIGAS - M039132CD How to interpret the burner’s “Performance curve” To check if the burner is suitable for the boiler to which it must be installled, the following parameters are needed: furnace input, in kW or kcal/h (kW = kcal/h / 860);...

  • Page 8: Burner Features

    C.I.B. UNIGAS - M039132CD BURNER FEATURES Burner model identification Burners are identified by burner type and model. Burner model identification is described as follows. Type NG400 Model NG - Natural gas burner LG - L.P.G. burner (1) BURNER TYPE NGX - Low NOx burners...
  • Page 9 C.I.B. UNIGAS - M039132CD NG350 NG350 NG350 LG350 LG350 LG350 BURNER TYPE M-.TN..0.25 M-.TN..0.32 M-.TN..0.40 L-.TN..0.25 L-.TN..0.32 L-.TN..0.40 115 - 330 Output min.- max. kW Natural gas L.P.G. Fuel Category (see next paragraph) 3B/P 12 – 35 4 – 13 Gas rate min.- max.
  • Page 10 C.I.B. UNIGAS - M039132CD NG400 NG400 NG400 NG400 BURNER TYPE M-.xx...0.25 M-.xx...0.32 M-.xx...0.40 M-.xx...0.50 115 - 420 Output min.- max. kW Natural gas Fuel Category (see next paragraph) 12 - 44.5 Gas rate min.- max. (Stm (Note2) - 360 Gas pressure min.- max.

  • Page 11: Low Nox Burners Technical Specifications

    C.I.B. UNIGAS - M039132CD Low NOx burners Technical specifications NGX280 NGX280 NGX280 BURNER TYPE M-.TN...0.25 M-.TN...0.32 M-.TN...0.40 Output min.- max. kW 93 - 190 Natural gas Fuel Category (see next paragraph) 9,8 - 20 Gas rate min.- max. (Stm Gas Pressure min.- max.

  • Page 12: Country And Usefulness Gas Categories

    C.I.B. UNIGAS - M039132CD NGX400 NGX400 NGX400 NGX400 BURNER TYPE M-.xx...0.25 M-.xx...0.32 M-.xx...0.40 M-.xx...0.50 Output min.- max. kW 90 - 350 Natural gas Fuel Category (see next paragraph) 9.5 - 37 Gas rate min.- max. (Stm Gas pressure min.- max. mbar...

  • Page 13: Performance Curves

    C.I.B. UNIGAS - M039132CD Performance Curves Gas burners NG280 Single stage NG280 Duoble stage-Progressive NG350 Single stage NG350 Progressive NG400 Single stage NG400 Progressive L.P.G. Burners LG280 Single stage LG280 Duoble stage-Progressive...
  • Page 14 C.I.B. UNIGAS - M039132CD LG350 Single stage LG350 Progressive LG400 Single stage LG400 Progressive Low NOx burners NGX280 Progressive NGX280 Duoble stage-Progressive NGX350 Progressive NGX400 Progressive Data are referred to standard conditions: atmospheric pressure at 1013mbar, ambient temperature at 15°C.

  • Page 15: Pressure In The Network - Gas Flow Rate Curves

    C.I.B. UNIGAS - M039132CD Pressure in the network - gas flow rate curves Gas burners NG280M-.TN... NG280M-.xx... 1 00 1 00 Rp ½" (1 5) Rp ½" (1 5) Rp ¾" (20) Rp ¾" (20) Rp 1 " (25) Rp 1 " (25) Rp 1 "¼...
  • Page 16 C.I.B. UNIGAS - M039132CD L.P.G. Burners LG280 L-.TN... LG280 L-.xx... Rp ½" (15) Rp ½" (1 5) Rp ¾" (20) Rp ¾" (20) Rp 1" (25) Rp 1 " (25) Rp 1 "¼ (32) Rp 1" ¼ (32) Gas rate Stm Gas rate Stm LG350 L-.TN...
  • Page 17 C.I.B. UNIGAS - M039132CD Low NOx burners NGX280 M-.TN.. NGX280 M-.xx.. R p ¾" ( 2 0 ) R p ¾" ( 2 0 ) R p 1" ( 2 5 ) R p 1" ( 2 5 ) R p 1"¼ ( 3 2 ) R p 1"¼...

  • Page 18: Combustion Head Pressure Curves Vs. The Gas Flow Rate

    NOTE: THE PRESSURE-RATE CURVES ARE APPROXIMATE; FOR A PROPER SETTING OF THE GAS RATE, PLEASE REFER TO THE GAS METER READING. To measure the pressure in the combustion chamber, as far as the IDEA series, a pressure plug is provided upstream the burner’s blast tube.

  • Page 19: Pressure In The Combustion Head Vs. Gas Flow Rate Curves

    C.I.B. UNIGAS - M039132CD Pressure in the combustion head vs. gas flow rate curves nNatural gas burners NG280 Gas rate Stm NG350 NG400 Gas rate Stm Gas rate Stm L.P.G. Burners LG280 Gas rate Stm LG350 LG400 Gas rate Stm...
  • Page 20 C.I.B. UNIGAS - M039132CD Low NOx burners NGX280 Gas rate Stm NGX350 NGX400 Gas rate Stm Gas rate Stm...

  • Page 21: Overall Dimensions (Mm)

    Overall dimensions (mm) Standard burners Recommended boiler drilling template and burner flange A(S*) A(L)* B(S*) B(L)* Omin Omax NG/LG280 NG/LG350 NG/LG400 * S = measure referred to burners fitted with standard blast tube L = measure referred to burners fitted with extended blast tube Valves group dimensions according to gas train size.
  • Page 22 Low NOx Burner Recommended boiler drilling template and burner flange A(S*) A(L)* B(S*) B(L)* Omin Omax NGX280 NGX350 NGX400 * S = measure referred to burners fitted with standard blast tube L = measure referred to burners fitted with extended blast tube Valves group dimensions according to gas train size.

  • Page 23: Mountings And Connections

    C.I.B. UNIGAS - M039132CD MOUNTINGS AND CONNECTIONS Packing The burners are despatched in cardboard packages whose dimensions are: 800mm x 540mm x 480mm (L x P x H) Packing cases of this type are affected by humidity; the maximum number of cases to be stacked is indicated outside the packing.

  • Page 24: Burner Gasket (Ngx400)

    C.I.B. UNIGAS - M039132CD Burner gasket (NGX400) To install the burner gasket proceed as shown by the following images. How to modify the blast tube length (NG/LG350-NG/LG400) To modify blast tube length please read the following instructions. Remove combustion head (See “Removing the combustion head” - Part III of this user’s guide).

  • Page 25: Gas Train Reversal

    C.I.B. UNIGAS - M039132CD Fig. 11 Fig. 12 If you modify the blast tube length you have to modify also the combustion head length by reading the following instructions. Remove the screws V1 and V2 as shown in Fig. 13.
  • Page 26 C.I.B. UNIGAS - M039132CD Take the gas pipe TR off and put it in the new position fixing the screws VT1 and VT2VT1 VT2 (Fig. 18). LOCKED UNLOCKED Fig. 16 Fig. 17 Fig. 18 Fig. 20 Fig. 19 Unscrew the V, rotate the head of 180 ° along its axis as shown inL Fig. 19), until the hole F is found. Fit the screw again(Fig. 19 - Fig.

  • Page 27: Gas Train Connections

    C.I.B. UNIGAS - M039132CD 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 ATTENTION: BEFORE EXECUTING THE CONNECTIONS TO THE GAS PIPE NETWORK, BE SURE THAT THE MANUAL CUTOFF VALVES ARE CLOSED.
  • Page 28 C.I.B. UNIGAS - M039132CD MOUNTING POSITIONS Fig. 23 Fig. 24 Fig. 25 Fig. 26 MULTIBLOC DUNGS MB-DLE 415..420 Mounting 1. Loosen screws A and B do not unscrew (Fig. 23 - Fig. 24). 2. unscrew screws C and D (Fig. 23 - Fig. 24).

  • Page 29: Electrical Connections

    C.I.B. UNIGAS - M039132CD 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 ADE- QUATE FOR CONNECTION TO THE MAINS.

  • Page 30: Connectors Wiring Diagrams

    C.I.B. UNIGAS - M039132CD Connectors wiring diagrams Single stage burner’s connectors: Fig. 34 - 7-pins connector Fig. 35 - Electric motor’s 3-pins connector NG/LG/NGX400 Progressive burners’ connectors: Fig. 36 - 7-pin and 4-pin connectors Fig. 37Electric motor’s 3-pin connector for...
  • Page 31 C.I.B. UNIGAS - M039132CD Fully-modulating burners’ connectors: Fig. 38 - 7-pin connector Fig. 40 - Probes connection Fig. 39 - Electric motor’s 3-pin connector for NG/LG/NGXG400 BURNER LOCKOUT SIGNALLING LAMP BURNER IN LOW FLAME SIGNALLING LAMP FAN MOTOR LOW FLAME TIME METER SD-0÷10V...

  • Page 32: Setting Gas And Air Flow Rate

    C.I.B. UNIGAS - M039132CD Power supply without neutral If the power supply to the burner is 230V phase-phase (without the neutral wire), with the Siemens LGB2..., LMG2... or LME.. flame control device, between the terminal 2 on the board and the earth terminal, an RC Siemens RC466890660 filter must be inserted.

  • Page 33: Adjustments - Brief Description

    C.I.B. UNIGAS - M039132CD Adjustments - brief description Adjust the air and gas flow rates at the maximum output (“high flame”) first, by means of the air damper and the adjusting cam respec- tively. Check that the combustion parameters are in the suggested limits.
  • Page 34 C.I.B. UNIGAS - M039132CD As for the setting, refer to this correspondence table. Berger STA Siemens SQN30 Siemens SQN72 BERGER STA Siemens SQN30 Siemens SQN72 I (red) High flame position (set to 90°) Low flame and ignition position III (orange) Stand-by position (set to 0°)

  • Page 35: Fully Modulating Burners

    C.I.B. UNIGAS - M039132CD rotating the round plate C by means of the screw V3 (turn clockwise to decrease the gas rate or counterclockwise to increase it). The index S shows the opening angle of the butterfly valve. Note: If it should be necessary to adjust the rating of the burner in low flame operation, once all the adjustments are accomplished, act on the related cam of the actuator (see next paragraph).

  • Page 36: Calibration Of Air And Gas Pressure Switches

    C.I.B. UNIGAS - M039132CD Fig. 46 Fig. 47 When wishing to monitor the test, install a pressure gauge ranged to that of the pressure supply point PA (Fig. 47). If the test cycle is satisfactory, after a few seconds the consent light LC (yellow) comes on. In the opposite case the lockout light LB (red) comes on. To restart it is necessary to reset the appliance by pressing the illuminated pushbutton LB.

  • Page 37: Calibration Of Low Gas Pressure Switch

    C.I.B. UNIGAS - M039132CD Calibration of low gas pressure switch As for the gas pressure switch calibration, proceed as follows: Be sure that the filter is clean. Remove the transparent plastic cap. While the burner is operating at the maximum output, test the gas pressure on the pres- sure port of the minimum gas pressure switch.

  • Page 38: Part Ii: Operation

    C.I.B. UNIGAS - M039132CD 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 39: Operation

    C.I.B. UNIGAS - M039132CD OPERATION Fig. 49 - Burner’s control panel Fig. 50 - Burner modulator Key - Fig. 49 Mains switch ON - OFF Lockout signaling lamp Reset button for flame control device (optional) Minimum gas pressure switch consent signaling lamp...

  • Page 40: Part Iii: Maintenance

    C.I.B. UNIGAS - M039132CD 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 41 C.I.B. UNIGAS - M039132CD Change the filter if the pressure difference between pressure connection 1 and 2 (Fig. 54-Fig. 55) Δp> 10 mbar. Change the filter if the pressure difference between pressure connection 1 and 2 (Fig. 54-Fig. 55) is twice as high compared to the last check.

  • Page 42: Removing And Cleaning The Combustion Head

    C.I.B. UNIGAS - M039132CD Removing and cleaning the combustion head By means of the plastic hook G, unlock the rod T (Fig. 57) which drives the butterfly valve (Fig. 57 and Fig. 58), to disconnect it from its seat. Remove the screws V1, V2, V3, V4 and the screws S1 and S2 (Fig. 57).

  • Page 43: Adjusting The Electrodes Position

    C.I.B. UNIGAS - M039132CD Adjusting the electrodes position ATTENTION: avoid the ignition and detection electrodes to get in touch with metallic parts (blast tube, head, etc.), otherwise the boiler’s operation 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÷5 mm.

  • Page 44: Troubleshooting

    TROUBLESHOOTING TROUBLE CAUSE MAIN SWITCH OPEN LACK OF GAS MAXIMUM GAS PRESSURE SWITCH DEFECTIVE (IF PROVIDED) THERMOSTATS/PRESSURE SWITCHES DEFECTIVE OVERLOAD TRIPPED INTERVENTION AUXILIARIES FUSE INTERRUPTED CONTROL BOX FAULTY DEFECTIVE SERVOCONTROL (IF PROVIDED) AIR PRESSURE SWITCH FAULT OR BAD SETTING MINIMUM GAS PRESSURE SWITCH DEFECTIVE OR GAS FILTER DIRTY IGNITION TRANSFORMER FAULT IGNITION ELECTRODES BAD POSITION...
  • Page 45 C.I.B. UNIGAS - M039132CD Wiring diagrams (see attached document) LG/NG/NGX 280 Single stage - Eletric wiring diagrams - SE01-530 LG/NG/NGX 280 Double stage - Progressive - Eletric wiring diagrams - SE18-103 LG/NG/NGX 350-400 Eletric wiring diagrams - SE18-163...
  • Page 55 C.I.B. UNIGAS - M039132CD BURNER EXPLODED VIEW NG280 Position Description VALVE GROUP COVER FIXING SCREW FIXING BRACKET - LEFT SIDE FIXING BRACKET - RIGHT SIDE COVER 4-WAYS FAIRLEAD 2-WAYS FAIRLEAD FAIRLEAD FASTENER 15.1 GAS PRESSURE INTAKE 15.2 HOUSING 15.3 FLANGED COUPLING 15.4...
  • Page 56 C.I.B. UNIGAS - M039132CD...

  • Page 57: Burner Exploded View Ng350-400

    C.I.B. UNIGAS - M039132CD BURNER EXPLODED VIEW NG350-400 Position Description VALVE GROUP WASHER COVER FIXING SCREW AIR DAMPER ASSEMBLY BOX ASSEMBLY BOARD’S SUPPORTING BRACKET FIXING BRACKET - LEFT SIDE FIXING BRACKET - RIGHT SIDE BLAST TUBE COVER 4-WAYS FAIRLEAD 2-WAYS FAIRLEAD...
  • Page 58 C.I.B. UNIGAS - M039132CD...

  • Page 59: Appendix

    CIB UNIGAS 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 60 CIB UNIGAS 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...
  • Page 61 CIB UNIGAS LME11 connection diagram Connection diagram Error message (alarm) Fuel valve PC control EK2 Remote lockout reset button RESET Flame signal Gas pressure switch Air pressure switch Load controller K2/1 K2/2 Fan motor Control thermostat/pressurestat Safety limit thermostat R / W...
  • Page 62 CIB UNIGAS 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).
  • Page 64 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.
  • Page 65 LG/NG/NGX280 LG/NG/NGX350 LG/NG/NGX400 WIRING DIAGRAMS E039132CA Rev. 0.5 07/2015...
  • Page 66 ELECTRICAL WIRING DIAGRAMS Eletric 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...

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Idea ng280Idea lg280Idea ngx280Idea ng350Idea ngx350Idea lg400 ... Show all

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