User Manual

ManualsBrandsSiemens ManualsBurner EquipmentOil burner controls LAL...

CC1N7153en

06.09.2018

Building Technologies

153

Oil Burner Controls

LAL...

Oil burner controls

· For oil atomizing burners of medium to large capacity

· For multistage or modulating burners in intermittent operation

· With or without air pressure supervision for checked air damper control

· Flame supervision

– with photoresistive detector QRB

– or blue-flame detector QRC1

– or photocell detector RAR9

The LAL and this Data Sheet are intended for OEMs which integrate the oil

burner controls in their products!

Use

· For the control and supervision of oil atomization burners

· For burners of medium to high capacity

· For intermittent operation (at least one controlled shutdown every 24 hours)

· Can be universally used with multistage or modulating burners

· Suited for use with stationary air heaters (WLE)

Flame supervision is ensured by means of photoresistive detector QRB, blue flame

detector QRC1, or photocell detector RAR9.

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»)

Summary of content (24 pages)

PAGE 1
7 153 LAL...
PAGE 2
Supplementary documentation Product type Type of documentation Documentation number LOK16 (For burner controls used in connection with burners for continuous operation) Data Sheet N7785 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.
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Electrical connection of the flame detector It is important to achieve practically disturbance- and loss-free signal transmission: · Never run the detector cable together with other cables – Line capacitance reduces the magnitude of the flame signal – Use a separate cable · Observe the permissible cable lengths (refer to «Technical data») Commissioning notes When commissioning the plant or when doing maintenance work, make the following safety checks: Safety check to be carried out Anticipated response a)
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Engineering notes (cont’d) Connect safety limit thermostats (manual reset) in the line (e.g.
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Standards and certificates Applied directives: · Low-voltage directive · Directive for pressure devices · Electromagnetic compatibility EMC (immunity) *) 2014/35/EC 2014/68/EC 2014/30/EC *) The compliance with EMC emission requirements must be checked after the burner control is installed in equipment Compliance with the regulations of the applied directives is verified by the adherence to the following standards / regulations: · Automatic burner control systems for burners and DIN EN 298 appliances burn
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Life cycle Burner controls LAL has a designed lifetime* of 250,000 burner startup cycles which, under normal operating conditions in heating mode, correspond to approx. 10 years of usage (starting from the production date given on the type field). This lifetime is based on the endurance tests in the standard EN 298. A summary of the conditions has been published by the European Control Manufacturers Association (Afecor) (www.afecor.org).
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Type summary BPZ:LAL2.14 LAL2.14 ● ● ● ● BPZ:LAL2.25 LAL2.25 ³) ● ● ● ● BPZ:LAL2.65 LAL2.65 ³) ● ● ● ● BPZ:LAL3.25 LAL3.25 ³)4) ● ● ● ● Medium- or heavy-oil burners ● Universal use ● Flash steam generators LAL1.25 ³) Start prevention in extraneous light BPZ:LAL1.25 No lockout QRC RAR9 Type QRB Article no. Semi-automatic startup Flame supervision with ...
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Accessories (to be ordered separately) Flame detectors Photoresistive detectors QRB See Data Sheet N7714 Blue-flame detectors QRC1 See Data Sheet N7716 Frontal illumination: Lateral illumination: Photocell detector RAR9 See Data Sheet N7713 Actuators Actuator SQN3 See Data Sheet N7808 Accessories for mediumcapacity burner controls Plug-in base AGM410490500 Article no.: BPZ:AGM410490500 · With Pg11 thread for cable entry glands · See Data Sheet N7230 Plug-in base AGM13.1 Article no.: BPZ:AGM13.
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Technical data General unit data LAL Mains voltage · With LAL1 / LAL2 / LAL3 Mains frequency Unit fuse (built-in) Primary fuse (external) Weight Power consumption Mounting position Degree of protection Safety class Perm. input current at terminal 1 Perm. current rating of control terminals 3, 6, 7, 9...11 and 15...
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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 flame 12 µA 12 µA 0.8 µA 0.7 µA Max. detector current that can occur 160 µA 130 µA 35 µA 45 µA To terminal 23 To terminal 23 To terminal 22 To terminal 22 Max.
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Function 2-stage expanding flame burner A TP B Legend C D R t7 t1 t6 M1 M2 M ~ t3 t3n Z t3´ TSA BV1 t4 R LR M t16 100% t5 min. 0... LK BV2 t11 t12 t13 FS 7153a09/0498 Modulating expanding flame burner B A TP R M ~ M1 M2 t7 C D t6 t1 t3 Z TSA BV... Fuel valve FS Flame signal amplifier LK Air damper LR Load controller M...
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Function (cont´d) Control of the burner · · · · · · · · · · Flame supervision · · · Preconditions for burner startup · · · · · With the exception of LAL1 Burner operation with or without postpurge Fan motors with a current draw of up to 4 A can be connected directly ® starting current max. 20 A (for max.
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Startup sequence A Start command by «R» ® «R» closes the start control loop between terminals 4 and 5 · The sequence switch starts to run - Only prepurging, fan motor at terminal 6 receives power - Pre- and postpurging, fan motor or flue gas fan at terminal 7 receives power on completion of «t7» · On completion of «t16», the control command for opening the air damper is delivered via terminal 9 · Terminal 8 receives no power during the positioning time · The sequence switch continues to run only after the
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Startup sequence (cont´d) t4 Interval «BV1 – BV2» or «BV1 - LR» · On completion of «t4», voltage is present at terminal 19 · The voltage is required to power «BV2» connected to auxiliary switch «v» in the actuator t5 Interval · On completion of «t5», terminal 20 receives power.
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Control sequence under fault conditions and lockout indication In case of any disturbance, the supply of fuel will immediately be interrupted. Whenever a fault occurs, the sequence switch stops and with it the lockout indicator.
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Connection diagrams (for variants, refer to «Connection examples») LAL1 z A t1 t12 t4 TSA t3 1 t5 t3n t3´ t7 AS a t16 t11 B 1 2 21 3 t6 D A t13 C 4 5 6 7 15 16 17 18 19 11 10 9 B QRB... W AL EK2 R SA H M1 Si M2 Z BV1 v a M z 23 22 8 LR 1(3) SB 20 m BV2 LK L N 7153a01/0814 22 bl 1 23 sw br QRC1...
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Connection diagrams (for variants, refer to «Connection examples») (cont’d) LAL2 / LAL3 a z t16 t11 t7 t10 A t12 15 1 t5 TSA t3 7 t4 t3n t3´ t1 P 1 2 21 3 t13 D A 13 12 t6 AS B C 14 4 5 6 16 17 18 19 W AL EK2 LP R SA v H M1 Si L N 7153a02/0814 M2 Z BV1 a M z 23 22 8 B LR 1(3) SB 11 10 20 9 QRB... m 22 BV2 LK 24 + RAR... Caution! Do not press lockout reset button (EKx) for more than 10 seconds! 17/24 Building Technologies CC1N7153en 06.09.
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Connection diagrams (for variants, refer to «Connection examples») LAL1 23 23 22 ar2 XIV 5 a IV VI L1 3 18 2 1 (3) LK LAL2 / LAL3 L SB 22 23 24 22 23 24 a b a b a b b V a a b b aa a b b a b 9 3 v Warning! Do not press the lockout reset button «EKx» for more than 10 seconds! For the connection of the safety shutoff valve, refer to the plant diagram provided by the burner supplier. 18/24 Building Technologies CC1N7153en 06.09.
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Sequence diagram A II a b t7 a b III a b I t11 t1 t12 t6 Control output D at terminal: * 4 12 19 7 16 10 9 t3 15 t3n t3´ a b C t4 IV V B 9 t16 t5 11 20 VI VII a b VIII a b 8 t20 17 IX TSA X a b XI a b XII a b XIII a b XIV a b XV a b 18 t10* t13 t8 7153d01e/0404 Positions of lockout indication P* 1 * These data do not apply to LAL1 19/24 Building Technologies CC1N7153en 06.09.
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Connection examples Connection of actuators without end switch for the «CLOSED» position 19 9 20 «z» adjusted for low-fire air volume. 8 11 10 M z LR v SA a LK BV2 N 7153a11/0498 Control of actuator during operation by control signals fed to terminal 17 19 18 17 9 10 11 20 8 6 LR BV1 7153a12/0498 LK BV2 For signal path, refer to «Connection diagrams».
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Connection examples and program sequence (cont’d) Load control with a 2-position controller. During burner off times, the air damper is closed. 2-stage expanding flame burner L... LR SA BV1 15 (t3´/t3n) 16 (t3) 17 18 19 9 20 BV2 11 10 8 2 10 8 LR 11 7 5 1 6 SA I IV 13 12 Z N N 3 BV2 BV1 M III 4 9 LK 7153a05/1195 A TP II B C D R t7 t1 t6 M1 M2 M ~ t3 t3n Z t3´ TSA BV1 Control of actuator according to the single-wire control principle.
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Legend a AL AR AS B bl br BR BV... EK... FR H L... LK LP LR m M NTC QRC1 QRB R RAR SA SB Si SM sw v V W z Z End switch for air damper’s OPEN position Remote lockout indicator (alarm) Main relay with «ar...» contacts Unit fuse Wire link (on the burner control’s base) Note! In applications involving air heaters (WLE), or in the case of oil burners with a maximum throughput of > 30 kW/h, removing wire link B is not permitted. Blue Brown Lockout relay with «br...
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Legend (cont’d) Lockout indication positions when there is no input signal (see Control sequence in the event of faults): ◄ ▲ ▼ No start Abortion of startup sequence Abortion of startup sequence ■ Lockout (fault in the flame supervision circuit) 1 P Lockout (no flame) Lockout (no air pressure) Time table TSA t1 t3 t3´ t3n t4 t5 t6 t7 t8 t10 t11 t12 t13 t16 t20 Ignition safety time Prepurge time with air damper fully open Preignition time, short («Z» connected to terminal 16) Preignition time, long (
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Dimensions Dimensions in mm 123 108,5 1,5 LAL Plug-in base AGM410490500 / AGM13.1 7153m03/0305 27,5 7,5 103 37 27,5 103 ã2018 Siemens AG Building Technologies, Berliner Ring 23, D-76437 Rastatt Subject to change! 24/24 Building Technologies CC1N7153en 06.09.