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CC1N7153en
22.05.2014
Oil Burner Controls
Oil burner controls
With or without air pressure supervision for checked air damper control
Flame supervision
– with photoresistive detector QRB...
– or blue-flame detector QRC1...
– or silicon photocell detector RAR9...
The LAL... and this Data Sheet are intended for OEMs which integrate the oil
burner controls in their products!
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For the control and supervision of oil atomization burners
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For burners of medium to high capacity
For intermittent operation (at least one controlled shutdown every 24 hours)
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Can be universally used with multistage or modulating burners
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Suited for use with stationary air heaters
LAL1...
- Yellow- and blue-flame burners without air pressure supervision
LAL2...
- Yellow-flame burners with air pressure supervision
LAL3.25
- For special applications, e.g. burners of incinerator plant
(for details, refer to «Type summary» and «Notes»)
For burner controls used in connection with burners for continuous operation, refer to
Data Sheet 7785 (LOK16...).
Building Technologies Division
Infrastructure & Cities Sector
7
153
LAL...
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Summary of Contents for Siemens LAL Series
- Page 1 LAL... Oil Burner Controls Oil burner controls With or without air pressure supervision for checked air damper control Flame supervision – with photoresistive detector QRB... – or blue-flame detector QRC1... – or silicon photocell detector RAR9... The LAL... and this Data Sheet are intended for OEMs which integrate the oil burner controls in their products! For the control and supervision of oil atomization burners For burners of medium to high capacity...
- Page 2 Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes must be observed! Do not open, interfere with or modify the unit! All activities (mounting, installation and service work, etc.) must be performed by qualified staff ...
- Page 3 Engineering notes Install switches, fuses, earthing, etc., in compliance with local regulations Connect valves and other plant components as specified in the burner manufactur- er’s documentation RAR... LAL2 16 17 18 11 10 1(3) QRB... 7153a03/0814 Connect safety limit thermostats (manual reset) in the line (e.g. «SB») ...
- Page 4 Standards and certificates Conformity to EEC directives - Electromagnetic compatibility EMC (immunity) 2004/108/EC - Low-voltage directive 2006/95/EC ISO 9001: 2008 ISO 14001: 2004 Cert. 00739 Cert. 38233 Certified with plug-in base and flame detector: Type LAL1.25 LAL2.14 LAL2.25 LAL2.65 LAL3.25 Life cycle Burner controls LAL...
- Page 5 Mechanical design LAL... Plug-in design Exchangeable unit fuse (including spare fuse) LAL3.25 Difference to LAL1... / LAL2...: Extraneous light does not initiate lockout, during burner off times or during the prepurge time Extraneous light prevents burner startup Housing Made of impact-proof and heat-resistance black plastic Lockout reset button with viewing window;...
- Page 6 Ordering Oil burner control, without plug-in base refer to «Type summary» Plug-in base is not included in standard delivery, must be ordered as a separate item! Accessories for medium-capacity burner controls refer to Data Sheet N7230 Plug-in base AGM410490500 with Pg11 thread for cable entry glands Plug-in base AGM13.1 with M16 thread for cable entry glands Flame detectors Photoresistive detectors QRB...
- Page 7 Technical data General unit data LAL... Mains voltage AC 230 V –15 / +10 % - With LAL1... / LAL2... / LAL3... AC 100 V –15 %...AC 110 V +10 % Mains frequency 50...60 Hz ±6 % Unit fuse (built-in) T6.3H250V to DIN EN 60127 Primary fuse (external) Max.
- Page 8 Technical data (cont´d) Flame supervision LAL1... with LAL2... * / LAL3... * with QRB... QRC1... QRB... RAR9... Min. detector current required at AC 230 V 95 µA 80 µA 8 µA 6,5 µA Max. permissible detector current with no 12 µA 12 µA 0.8 µA 0.7 µA...
- Page 9 Function 2-stage expanding flame burner Modulating expanding flame burner t3´ 100% 100% min. min. 0... 0... 7153a09/0498 7153a10/0498 Legend BV... Fuel valve M... Fan or burner motor Flame signal amplifier Control thermostat or pressurestat Air damper Modulating fuel valve Load controller Ignition transformer General The following features of the LAL...
- Page 10 Function (cont´d) Flame supervision Flame detector and flame simulation test are made automatically during burner off times and the prepurge time «t1» If loss of flame occurs during operation, the burner control will initiate lockout If automatic repetition of the startup sequence is required, the clearly marked wire link on the plug-in section of the LAL...
- Page 11 Startup sequence (cont´d) Ignition safety time On completion of «TSA», a flame signal must be present at terminal 22. It must be available until controlled shutdown occurs otherwise, the burner control will initiate lockout and lock itself in the lockout position Postignition time «Z»...
- Page 12 Control sequence under fault conditions and lockout indication Whenever a fault occurs, the sequence switch stops and with it the lockout indicator. The symbol appearing above the reading mark indicates the type of fault: No start One of the contacts is not closed (also refer to «Preconditions for burner startup») ...
- Page 13 Connection diagrams (for variants, refer to «Connection examples») LAL1... 16 17 11 10 1(3) QRB... 7153a01/0814 QRC1... LAL2... / LAL3... 16 17 18 11 10 1(3) QRB... 7153a02/0814 RAR... 13/19 Building Technologies Division CC1N7153en Infrastructure & Cities Sector 23.05.2014...
- Page 14 Connection diagrams LAL1... 1 (3) LAL2... / LAL3... 23 24 23 24 Warning! Do not press the lockout reset button «EK...» for more than 10 seconds! For the connection of the safety shutoff valve, refer to the plant diagram provid- ed by the burner supplier.
- Page 15 Sequence diagram Control output at terminal: t3´ VIII t10* XIII 7153d01e/0404 Positions of lockout indication * These data do not apply to LAL1... 15/19 Building Technologies Division CC1N7153en Infrastructure & Cities Sector 23.05.2014...
- Page 16 Legend Changeover end switch for air damper’s OPEN position Remote lockout indicator (alarm) Load relay with «ar...» contacts Unit fuse Wire link Blue Brown Lockout relay with «br...» contacts BV... Fuel valve EK... Lockout reset button Flame relay with «fr...» contacts Mains isolator L...
- Page 17 Connection examples Connection of actuators without «z» adjusted for low-fire air volume. changeover end switch for the «CLOSED» position 7153a11/0498 Control of actuator during operation For signal path, refer to «Connection by control signals fed to terminal 17 diagrams». 7153a12/0498 Control of «BV...»...
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Page 18: Open» And «Close
Connection examples (cont’d) 2-stage expanding flame burner Load control with a 2-position controller. During burner off times, the air damper is closed. L... (t3´/t3n) (t3) 10 8 13 12 7153a05/1195 Control of actuator according to the single-wire control principle. For actuator «SA» type SQN..., refer to Data Sheet N7808;... - Page 19 Dimensions Dimensions in mm LAL... Plug-in base AGM410490500 / AGM13.1 7153m03/0305 27,5 27,5 2014 Siemens AG Infrastructure & Cities Sector Building Technologies Division Subject to change! 19/19 Building Technologies Division CC1N7153en Infrastructure & Cities Sector 23.05.2014...