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Summary of Contents for Bentone STG 146/2 R
- Page 1 Installation and Maintenance Manual STG 146/2 R LGB21.330A27 MB-DLE 407 Translation of the original instructions. Keep for future use. Read carefully before use. 178 069 26-6 CR00861 2024-05-06...
- Page 2 1~230V 1,0A 50Hz IP 20 Motor supply MADE IN SWEDEN BY 1. Manualer på övriga språk 1. Manuals in other languages 1. Manualer på andre sprog 2. www.bentone.com\nedladdning eller 2. www.bentone.com\download 2. www.bentone.com\download eller scanna QR-koden. or scan QR-code. scan QR-koden.
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Page 3: Table Of Contents
BENTONE Table of contents General Information ............5 Settings ................20 Delivery inspection................ 5 Air settings ................... 20 Safety ....................5 Nozzle adjustment ..............20 What to do if you smell gas ............6 Startup ................... 21 Control of combustion .............. 21 Technical data ...............7... -
Page 5: General Information
BENTONE General Information The burner may only be used for its intended purpose in accordance with the product’s technical data. We reserve the right to make design changes and cannot be held liable for any misprints or typographical errors. Modifying the design or using accessories or components that have not been approved by CTC in writing is strictly prohibited. -
Page 6: What To Do If You Smell Gas
BENTONE • Care must be taken by the installer to ensure that no electrical cables or fuel lines are pinched or otherwise damaged during installation or service. Sharp edges can occur on, for example: flame tube, fan wheel and air •... -
Page 7: Technical Data
BENTONE Technical data The burner is intended for: • Operation in installations according to EN 303 and EN 676. Fuels: • Natural gas H, E, L, LL. • LPG, Butane and Propane. Dimensions STG 146/2 ø B ø C Flame tube... -
Page 8: Capacity Range
BENTONE Capacity range Capacity Max. connection Gas quantity at Gas quantity at Min. connection Gas valve min. power max. power MultiBloc pressure pressure mbar mbar STG 146/2 G20 41 - 133 14.1 MBC 120 See data plate. MB-DLE 407 G25 41 - 133 16.4... -
Page 9: Working Field
BENTONE Working field G20, G25 - 41-133 kW G30, G31 - 47-144 kW mbar Do not exceed working field. -1,0 Setting for nozzle assembly and air damper Basic settings should only be seen as setting values to get burner to start. -
Page 10: Components
BENTONE Components Reset button Flame tube Air settings Burner control Ignition electrode Nozzle assembly adjustment Transformer Air damper Motor Fixing flange Fan housing, front Electrical connection Connection, gas valve Fan housing, rear Gas valve (MultiBloc) Ionisation electrode Air pressure switch... -
Page 11: Skeleton Diagram
BENTONE Skeleton diagram Ball valve Filter Pressure regulator Pressure gauge with shut-off cock Gas pressure switch, min Gas pressure switch, max Main valve Safety valve Leakage control Air pressure switch Electrical connection Pos. 5b, 7: Components not required according to EN 676. -
Page 12: Electric Equipment
BENTONE Electric equipment Safety system The safety system (safety switch for hatches, doors, water level, pressure, temperature and other safety devices) must be installed in the safety circuit in accordance with current regulations for the system. The cables of the safety system must be separated so that the outgoing signal is not placed in the same cable as the incoming signal. -
Page 13: Control Program At Faults; Fault Mode Indicator Lgb
BENTONE 3.2.1 Components Air pressure switch Burner control Power control Gas pressure switch Ionization electrode Ignition transformer Operating fuse Connection terminal board Operating lamp Earth terminal Motor Solenoid valve 1 Control thermostat Control program at faults; fault mode indicator LGB .. - Page 14 BENTONE 3.3.1.1 Control Programme in Case of Faults Basically, the fuel supply is stopped immediately in the case of any fault. If the fault condition occurs at a time between start and pre-ignition, which is not indicated by symbols, the cause is usually a switch-off by the air pressure switch LP or a too early, i.e.
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Page 15: Installation
BENTONE Installation General instructions Installation must be carried out in accordance with current regulations and instructions. The supplier/installer of the facility is obliged to familiarize himself with all regulations so that the installation meets the requirements of the local authorities. -
Page 16: Mounting
BENTONE Mounting The burner is mounted on the boiler with bolts according to the hole pattern on the fixing flange. Mount the fixing flange and the supplied gasket on the boiler. If new mounting holes must be drilled, use the fixing flange as a template and fasten with M8-M10 screws. -
Page 17: Gas Nozzle
BENTONE Gas nozzle Check that the ignition and ionization electrodes are correctly set before mounting on the boiler. Natural gas, LPG Natural gas... -
Page 18: Aerating
BENTONE De-aerating De-aerating the gas line by closing the tap to the gas connection and unscrewing the screw on the measuring nipple for the connection pressure. Connect a plastic hose, open the tap and drain the gas in a safe place. When the de-aerating is completed, be sure to refit the screw on the measuring nipple. -
Page 19: Calculation Of Gas Flow
BENTONE Calculation of gas flow Formula symbol Description Example values Standard gas volume [Nm3/h] Gas volume at normal condition 15 °C 1013 mbar Boiler output [kW] 90 kW Lower calorific value of gas [kWh/m 9.45 kWh/m Natural gas under normal conditions 15 °C 1013 mbar, EN 676 η... -
Page 20: Settings
BENTONE Settings Air settings Prior to commissioning, adjust the burner setting for air damper according to diagram, see Technical data. After the first start, the burner must be adjusted again for good function and combustion. Nozzle adjustment The burner is equipped with a nozzle adjustment that changes the position of the nozzle assembly in the burner head. -
Page 21: Startup
BENTONE Startup After the burner has been mounted on the boiler and the electrical connection, de-aeration and tightness control have been performed, the burner is ready to start-up. Read the sections dealing with settings of gas valve, damper motor and combustion device before start-up. -
Page 22: Setting The Air Pressure Switch
BENTONE Setting the air pressure switch The air pressure switch must block the burner if the amount of air for combustion becomes too low. The air pressure switch must be set so that in the event of a lack of air supply at the burner’s max. or min. capacity reacts before the monitored pressure drops so much that poor combustion occurs. -
Page 23: Setting The Gas Pressure Switch, Min
BENTONE Setting the gas pressure switch, min. The gas pressure switch must react to too low a connection pressure to the burner, prevent the burner from starting and stop the burner during operation. The burner may start again when the connection pressure has risen above the set pressure on the gas pressure switch. -
Page 24: Gas Valve Multibloc Dle 405 - 412
BENTONE Gas valve MultiBloc DLE 405 - 412 Max. inlet pressure: 360 mbar. Adjustable governor pressure: 405 - 412 S50 = 4 - 50 mbar Solenoid valve: Slow opening valves with adjustable start load and max. flow. All gasline components... - Page 25 BENTONE Flow adjustment Loosen the fixing screw (a), turn the hydraulic device (b): to the right = the gas flow is reduced • to the left = the gas flow is increased • Do not forget to tighten the fixing screw.
- Page 26 BENTONE Pressure taps 1, 3, 4, 5 Screwed sealing plug G 1/8 2 Measuring nozzles Electrical connection S 20/S 50...
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Page 27: Service
BENTONE Service Service and maintenance work may only be performed by qualified personnel. Perform operational check of all safety systems and components at each service. Only CTC original parts should be used when replacing components. Use caution when operating the burner, surfaces may be hot. -
Page 28: Combustion Device
BENTONE Combustion device Disconnect the main power and shut off the fuel supply. Before obtaining access to electrical and fuel line components all supply circuits must be disconnected. Remove gas line by loosening the electrical cabling and screws (G) to the gas valve and lift out. -
Page 29: Fan Motor And Fan Wheel
BENTONE Fan motor and fan wheel Disconnect the main power and shut off the fuel supply. Before obtaining access to electrical and fuel line components all supply circuits must be disconnected. Disconnect electrical connection to the motor. Loosen screws on the motor flange and lift out the motor. -
Page 30: Air Intake And Suction Cone
BENTONE Air intake and suction cone Disconnect the main power and shut off the fuel supply. Before obtaining access to electrical and fuel line components all supply circuits must be disconnected. Remove gas line by loosening the electrical cabling and screws to the gas valve and lift out. -
Page 31: Replacement Of Electrical Components
BENTONE Replacement of electrical components Disconnect the main power and switch off the fuel supply. Before obtaining access to terminals, all supply circuits must be disconnected. Note the connection of the existing component and disassemble. Fit new component with same connection or with specified alternative connection. -
Page 32: Vibrations
BENTONE Vibrations Maximum permitted vibration level is 5.0 mm/s. • Check tightness of fasteners. • Check fan wheel for damage and contamination (replace if necessary). • Check motor shaft and bearings. If they are worn, replace the motor. Use screw to attach the... -
Page 33: Flame Monitoring And Ionisation Current Check
BENTONE Flame monitoring and ionisation current check The standard version of the burner is monitored according to the ionisation principle. The ionisation current should be checked on initial start-up and at each service visit. The reason for low ionisation current can be leakage current, poor connection to earth, fouling or incorrectly positioned ionisation electrode in the combustion head. -
Page 34: Flame Supervision With Uv Detector
BENTONE Flame supervision with UV detector 8.9.1 QRA and auxiliary unit AGQ for LGB21 / LGB22 / LGB41 DC current detector signals with flame detector QRA... Min. required Max. possible Measurement at the flame detector QRA… 200 μA 500 μA UV detector QRA Universal flame detector for use with gas and gas / oil burners. -
Page 35: Handing Over Of The Installation
BENTONE Handing over of the installation • Make repeated start attempts to ensure that the adjustments function. • Close the ball valve during operation to check that the gas switch switches off at the set value. • Remove the hose for the air pressure switch to check that the burner locks out. -
Page 36: 10. Troubleshooting
BENTONE 10. Troubleshooting Conditions favourable to trouble-free operation of the system can only be guaranteed through the interaction between three factors: electricity, gas flow and combustion air. If any of these factors change, it may cause a malfunction. Before requesting servicing, check the following points: Are the system’s gas taps open? - Page 37 BENTONE Cause of fault Action Burner trips during pre-aeration: Air sensor faulty or incorrectly set. Increase/decrease air setting. Reduce air volume. Ignition load incorrectly set. Increase/decrease gas supply Reduce airflow. Gas pressure too low. Increase pressure. If necessary, contact gas supplier.
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Page 38: 11. Service- And Inspection Protocol
11. Service- and inspection protocol Installation: Boiler: Name: Type: Efficiency kW: Address: Burner Type: Efficiency kW: Installed by: Date: Date Efficiency gas/h Governor Fluegas Ionisation Pressure temp current Fire room Chimney Measure- ment Before After °C µ A mbar mbar Small Flame Large Flame... - Page 40 CTC AB Box 309 SE-341 26 Ljungby info@bentone.se +46 372 88 000 www.bentone.se...
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