Bentone STG 120/2 Installation And Maintenance Instruction
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Summary of Contents for Bentone STG 120/2
- Page 1 CR00122 178 064 25-1 2020-10-29 Providing sustainable energy solutions worldwide Installation- and maintenance instruction STG 120/2 STG 146/2 LME21 MD-DLE 407 B07 Translation of the original instructions.
- Page 2 Beispiel Manualer på övriga språk www.bentone.com\nedladdning 352011030141 Serial no. 1234567 Man.Year 2019 Designation BF 1 KS 76-24 eller scanna QR-koden BF 1 Type Model BF 1 KS 76-24 Cap. Min-Max LIGHT OIL 35-90kW 1,25-6,0 cSt 7-14bar Skriv in brännarens artikelnummer som finns på din...
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Page 3: Table Of Contents
5.1 Overview _______________________________________ 18 5.2 Mounting closed position indicator (CPi) _____________ 19 5.3 Adjustment of governor ___________________________ 20 5.4 Adjustment of start gas flow valve V3 ________________ 20 5.5 Flow adjustment main valve V2 _____________________ 20 5.6 Skeleton diagrams _______________________________ 21 Bentone... -
Page 4: General Information
• Burner pipes, fan wheels and air dampers may contain sharp edges. • The surface temperature of the burner’s components can exceed 60 °C. • Caution: The burner has moving parts, and there is risk of crushing injuries. 172 515 01 2018-01-02 Bentone... - Page 5 Open windows and doors. Close the gas ball valve. Warn residents; do not use doorbells. Evacuate the building. Notify the installer or gas supplier once the building has been evacuated. Bentone...
- Page 6 Delivery check • Make sure everything is delivered and the goods have not been damaged during transit. • If something is wrong with a delivery, report it to the supplier. • Transport damage must be reported to the shipping company. Bentone...
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Page 7: Technical Data
Type designation STG 120/146 Burner head 2 • Hot water boilers in intermittent operation • Gas connection 1/2 -1” STG 120 Ø 89 STG 146 Ø 103 STG 120/2 STG 146/2 Length of Flange A Length of Flange A burner tube... -
Page 8: Output Range
Capacity kW Gas volume at a Gas volume at a Max. inlet Rated inlet pressures min. output Nm max output Nm pressure mbar mbar STG 120/2 G20 15-50 1,45 G25 15-50 6,25 G30 18-70 G31 18-70 STG 146/2 G20 41-133... - Page 9 2.1.1 Working field STG 120/2 G20 & G25 14,5-50 kW STG 120/2 G30 & G31 17,5-70 kW Capacity kW Do not exceed working field STG 146/2 G20 & G25 41-133 kW STG 146/2 G30 & G31 47-144 kW -1,0 Capacity kW...
- Page 10 IE, IT, LV, LT, LU, MT, NL, NO, PL, PT, MK, RO, RS, SK, SS, ES, SE, CH, TR, GB, 20-360mBar AT, CH, CY, DK, FI, LT, RO, 2H38/P SE, SK 20-360mBar GB, IE 2H3P 20-360mBar NL, RO 2L38/P 20-360mBar 2E38/P 20-360mBar 2E(R)B 20-360mBar Bentone...
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Page 11: Description Stg 120
Ignition electrode Air adjustment Transformer Air damper Inner assembly adjustment Fixing flange Front part fan housing Motor Rear part fan housing Electric connection Connection MultiBloc Ionisation electrode Air pressure switch MultiBloc Inner assembly Shielding arrangement fan housing Brake plate Bentone... -
Page 12: General Instructions
Adjust the burner to appr. 20% excess air in accordance with the table. Check the flue gas temperature. Calculate the efficiency. Check also the actual gas volume on the gas meter so that the correct input is achieved. 172 515 03 2018-01-02 Bentone... -
Page 13: Installation
If not, use the connectors included. (Refer to connection under Electric equipment) If an electric connection other than the one recommended by Enertech is used, a risk of damage and injury can arise. 172 515 03 2018-01-02 Bentone... -
Page 14: Skeleton Diagram Cpi
Gas pressure switch, maxi Main valve Safety valve Valve proving system Air pressure switch Electrical connection Solenoid V3 Pos. 5b, 7: Components not required according to EN 676. Required over 1200 kW according to EN 676. 172 525 13 2020-10-08 Bentone... -
Page 15: Mounting On The Boiler
Ensure that the union nut, ball valve and tubing make it easy to remove the burner for inspection and service. Check the gas tightness. 172 515 20 2018-01-08 Bentone... -
Page 16: Inspection Of Gas Nozzle Before Commissioning
At the end of the safety time (2-3 sec.) the gas control locks out. The solenoid valve and the motor will be "dead". Remove the link from the gas pressure switch after the test is finished. 172 515 21 2018-01-08 Bentone... -
Page 17: Gas Nozzle
4.9 Gas nozzle Inner assembly Natural, LPG Natural gas Bentone... -
Page 18: Multi-Bloc
(DIN EN 175 301-803 connector) (option) Outlet flange Test point connection G 1/8 upstream of V1, possible on both sides Test point connection M4 downstream of valve 2 Gas flow direction 172 525 14 2020-10-16 /1 Bentone... -
Page 19: Mounting Closed Position Indicator (Cpi)
Then rotate the setting screw by another scale division. Check function by activating the valve. Re-set switching point Turn setting screw C back in arrow direction ”–” to the stop; proceed as described in 7. 172 525 14 2020-10-16 /2 Bentone... -
Page 20: Adjustment Of Governor
At small capacities (gas flows) it is also necessary to adjust as above. Flow adjustment Adjustment of V2 damper e:under cap 172 525 14 2020-10-16 /3 Bentone... -
Page 21: Skeleton Diagrams
5.6 Skeleton diagrams 5.6.1 Multi-bloc MBD-LE..B07 Filter cover p Br 1,3,4,6 G 1/8 screw plug Test nipple (option) M4 screwed sealing plug p Br 5 3 4 5.6.2 Electritrical connection MBD-LE..B07 MB-D(LE) B07 S22 / S52 172 525 14 2020-10-16 /4 Bentone... - Page 22 E on the working diaphragm 26 of the regulator. In regulated state, setting spring inlet pressure and pressure of working diaphragm are in force equilibrium. The compensating diaphragm ensures the fast closing function of valve V1 and a high regulating quality. 172 525 14 2020-10-16 /5 Bentone...
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Page 23: Setting The Burner
Hower, study the sections dealing with adjustments of multi-bloc, combustion air and combustion head. Open the ball valve and switch on the main switch. If the burner starts the actual adjustment can be made. 172 515 22 2020-09-29 Bentone... - Page 24 It is therefore always necessary to make a fine adjustment of the air by means of the adjustment device of the burner. Gas quality max. CO lambda 1,2 Natural gas 10,0 4±1 11,9 11,5 4±1 13,9 Bentone...
- Page 25 Adjustment of inner assembly Air adjustment STG120 STG146 Control of burner head Bentone...
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Page 26: Setting The Air Pressure Switch
This is to ensure the reliable function of the burner. If breakdowns or interruptions occur, the air pressure switch is probably set to a too narrow position. Fit the protective cover, screw (Y). Bentone... -
Page 27: Setting The Min. Gas Pressure Switch
The tolerance on the scale for the min. gas pressure switch is approx. ±15%. Open the ball valve. Remove the pressure gauge and close the pressure outlet (X). Check the gas tightness. Fit the protective cover, screw (Y). Bentone... -
Page 28: Recommended Excess Air When Using Default Setting
Lower heat value Hu at normal state 15°C and 1013.25 mbar EN676 Grade of gas kWh/Nm MJ/Nm kcal/Nm Natural gas 34.02 8126 Natural gas 29.25 6986 Propane 24.6 88.00 21019 Butane 32.5 116.09 27728 172 515 27 2018-01-11 Bentone... - Page 29 Temperature of gas at the gas meter [°C] Barometer reading [mbar] Pressure of gas at the gas meter [mbar] Factor calculated for multiplication with flow in Nm /h to arrive at actual flow in Nm Actual flow · 273+T 1013.25 Bentone...
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Page 30: Calculating The Quantity Of Gas Supplied
= Time for a certain quantity of gas consumed by the burner. M = Quantity of gas consumed. V = Actual gas flow Calculation example: t = 1 min 10 s M = 100 dm (litre) 0.1 m 1000 0.0194 h 3600 ≈ 5.1 m 0.0194 Bentone... -
Page 31: Flame Monitoring And Ionisation Current Check
Min. DC 1.5 µA Required current to ensure Min. DC 3 µA detection Possible detection current Max. DC 20 µA Operational indicator lamp <5 µA DC flashes green Operational indicator lamp >5 µA DC shines green 172 615 02 2018-01-02 Bentone... -
Page 32: Uv-Detector
AGQ3...A27 is mandatory. Correct functioning of aged UV cells can be checked as UV test with a higher supply voltage across the UV cell after controlled shutdown until terminal 3 ON. Connection diagram Measuring circuit for measuring the UV flame current Measurement made at the flame detector QRA… Bentone... -
Page 33: Handing Over Of The Installation
• Is the circulation pump in operation? • Is there a supply of fresh air to the installation? • If integral components are of a different make from what is stated in this manual, see the enclosed loose-leaf. 172 615 04 Bentone... -
Page 34: Electric Equipment
Signals must be in different harnesses for safety reasons. Safety system as door switches, water level, pressure, temperature and other safety limiters must be installed in safety loop according to process. 172 615 76 2020-10-16 /1 Bentone... -
Page 35: Wiring Diagram
9.1 Wiring diagram Gas burner control: LME21 172 615 76 2020-10-16 /2 Bentone... - Page 36 Reset time after lockout: < 1 s < 1 s Reaction time on flame failure < 1 s < 1 s Min current with flame established 5 µA 5 µA Max.flame detector current 20 µA 20 µA 172 615 76 2020-10-16 /3 Bentone...
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Page 37: Control Program When Disruption
7.2.1.2 Limiting of starting repetitions LME ... has a function with start repetition if the flame is not created at start ord disappears during operation.. LME ... allows max. three repetitions during coninuous starting cycle 172 615 76 2020-10-16 /4 Bentone... - Page 38 3 s. To return to normal mode, hold the reset button depressed for more than 3 s. If the firing unit is in the alarm mode, it is reset by pressing the reset button 0.5...3 s. 172 615 76 2020-10-16 /5 Bentone...
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Page 39: Troubleshooting
Replace solenoid valve terminals, or entire valve No power to solenoid valve Check the connection No electrical connection through air pressure gauge Check the air pressure gauge’s settings and functions Ignition load incorrectly set Increase/decrease gas supply Reduce airflow 172 615 06 2018-01-10 Bentone... - Page 40 Incorrectly set or faulty air sensor Check the settings and reset, or replace Ignition electrode overload Replace Burner control ambient temperature too high Insulate for heat, Max. 60 ° Ignition spark too weak Check the transformer Poor combustion Poor draught conditions Check the chimney Bentone...
- Page 41 Flame at incorrect angle due to combustion head out of position Check the combustion head and readjust Condensation build up in boiler and chimney Flue gas temperature too low or gas volume too low Raise the flue gas temperature by increasing gas volume Insulate the chimney Bentone...
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Page 42: General Instructions For Gasburners
11. General instructions for gasburners 11.2.1 Installation Follow standards and instructions applicable to the Check that the burner is adapted to the gas quality in installation of gas burners question Ensure that the electric installation is made in accordance Check that the input pressure of the gas is correct with existing regulations Check that the dampers of the boiler are open Check that the fresh air intake of the boiler room is... - Page 43 Service- and inspection card Installation Boiler Name: Type: Efficiency kW: Address: Burner Type: Efficiency kW: Installed by: Date: Date gas/h Governor Fluegas Ionisation Pressure Efficiency temp current Fire Chimney room Measu- rement Before After °C µ A mbar mbar Small Flame Large Flame...
- Page 48 Enertech AB. P.O Box 309, SE-341 26 Ljungby. www.bentone.se, www.bentone.com...
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