1、CC1N7153en14.10.2002Siemens Building TechnologiesHVAC ProductsISO 90017153Oil Burner Controls LAL.Oil burner controlsg183 With or without air pressure supervision for checked air damper controlg183 Flame supervision with photoresistive detector QRB1., or blue-flame detector QRC1., or selenium photoc
2、ell detector RAR.The LAL. and this Data Sheet are intended for OEMs which integrate the oilburner 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
3、hours)- Can be universally used with multistage or modulating burners- Suited for use with stationary air heatersLAL1. - Yellow- and blue-flame burners without air pressure supervisionLAL2. - Yellow-flame burners with air pressure supervisionLAL3.25 - For special applications, e.g. burners of incine
4、rator plants(for details, refer to Type summary and Notes)LAL4. - Yellow- and blue-flame burners with air pressure supervisionFor burner controls used in connection with burners for continuous operation, refer toData Sheet 7785 (LOK16.).2/20Siemens Building Technologies CC1N7153enHVAC Products 14.10
5、.2002Warning notesTo avoid injury to persons, damage to property or the environment, the followingwarning notes should be observed!Do not open, interfere with or modify the unit!g183 Before performing any wiring changes in the connection area of the LAL, com-pletely isolate the burner control from t
6、he mains supply (all-polar disconnection)g183 Ensure protection against electric shock hazard by providing adequate protectionfor the burner controls connection terminalsg183 Check to ensure that wiring is in an orderly state and that the wires are firmly con-nectedg183 Press the lockout reset butto
7、n / operation button only manually (applying a force ofno more than 10 N), without using any tools or pointed objectsg183 Do not press the lockout reset button on the unit or the remote reset buttonfor more than 10 seconds since this damages the lockout relay in the unitg183 Fall or shock can advers
8、ely affect the safety functions. Such units may not be putinto operation, even if they do not exhibit any damage3/20Siemens Building Technologies CC1N7153enHVAC Products 14.10.2002Engineering notesg183 Install switches, fuses, earthing, etc., in compliance with local regulationsg183 Connect valves a
9、nd other plant components as specified in the burner manufac-turers documentationHNLEK2AL211 21(3)3M1 M2R4 5 6 7BV2BV1ZSA15 16 17 18a zM2019 9LR7153a03/030224mLK11 10 8 22BvLP141213 23LAL212 3 4 5 6 7 8 9 10QRB1.22 24+RAR.SB Wg129 Connect safety limit thermostats (manual reset) in the line (e.g. SB)
10、g130Remote resetWhen connecting lockout reset button EK2 between terminals 21 and- 3: For remote reset only- 1: For remote reset and remote emergency shutdownWith LAL: Required switching capacity of- switching devices connected between terminals 4 and 5 (refer to Technical data)g131With LAL2. / LAL3
11、. / LAL4.: Required switching capacity of- switching devices connected between terminal 12 and LP (refer to Technical data)- LP (refer to Technical data)When using series connection, the control contacts of other devices contained in the burner plant must be con-nected as follows:To terminal 4 or 5
12、g174 contacts that must be closed from startup to controlled shutdown g174 otherwise no startupor shutdownTo terminal 12 (not with LAL1.) g174 contacts that must only be closed on startup g174 otherwise no startupg132To terminal 14 (not with LAL1.) g174 contacts that must be closed no later than at
13、the beginning of t3 or t3and that must remain closed until controlled shutdown occurs g174 otherwise lockoutg133Maximum current draw, refer to Technical datag134Z connected to terminal 15 g174 t3 and t3ng135Connection of BV. to terminal 20, refer to Connection examplesg136When using burners without
14、air damper, or with an air damper not controlled and monitored by the LAL, ter-minal 8 must be connected to terminal 6g137Wire link B clearly marked on the underside of the LALWhen wire link B is fitted, the LAL. initiates lockout if loss of flame occurs during operation. For repetition ofthe startu
15、p sequence, wire link B on the plug-in section of the LAL. must be cut away. Just cutting is notpermitted!g138For the permissible lengths and laying of detector cables, refer to Flame supervisionMounting notesg183 Ensure that the relevant safety regulations are complied with4/20Siemens Building Tech
16、nologies CC1N7153enHVAC Products 14.10.2002Installation notesg183 Installation work must be carried out by qualified staffg183 Live and neutral conductors may not be mixed upElectrical connection of the flame detectorIt is important to achieve practically disturbance-free signal transmission:g183 Ne
17、ver run the detector cable together with other cables Line capacitance reduces the magnitude of the flame signal Use a separate low-capacitance cableg183 Observe the permissible cable lengths (refer to Technical data)g183 Always run high-voltage ignition cables separately, with the greatest possible
18、 dis-tance to the unit and to other cablesCommissioning notesg183 Commissioning work must be carried out by qualified staffg183 When commissioning the plant or when doing maintenance work, make the follow-ing safety checks:Safety check Anticipated responsea) Burner startup with flame detectordarkene
19、dLockout at the end of TSAb) Burner startup with flame detectorexposed to extraneous lightLockout after 40 seconds at thelatestc) With wire strap B:Simulation of loss of flame duringoperation. For that purpose, darkenthe flame detector during operationand maintain this stateLockoutd) Without wire st
20、rap B:Simulation of loss of flame duringoperation. For that purpose, darkenthe flame detector during operationand maintain this stateRepetition followed by lockout at theend of TSAStandardsConformity to EEC directives- Electromagnetic compatibility EMC (immunity) 89 / 336 EEC- Low-voltage directive
21、73 / 23 EECService notesg183 Maintenance work must be carried out by qualified staffg183 Each time a unit has been replaced, check to ensure that wiring is in an orderlystate and that the wires are firmly connectedDisposal notesThe unit contains electrical and electronic components and may not be di
22、sposed oftogether with household waste.Local and currently valid legislation must be observed.5/20Siemens Building Technologies CC1N7153enHVAC Products 14.10.2002Mechanical design- Plug-in design- Exchangeable unit fuse (including spare fuse)Difference to LAL1. / LAL2. / LAL4.:- Extraneous light doe
23、s not initiate lockout during burner off times during the prepurge time- Extraneous light prevents burner startup- Made of impact-proof and heat-resistance black plastic- Lockout reset button with viewing window; located behind it: Lockout warning lamp Lockout indicator- coupled to the spindle of th
24、e sequence switch- visible in the transparent lockout reset button- uses easy-to-remember symbols to indicate the type of fault and the pointin time lockout occurred- Base and plug-in section of the LAL. are designed such that only burner controlsof the LAL. family can be plugged in- 24 connection t
25、erminals- Auxiliary terminals 31 and 32- 3 earth terminals terminating in a lug for earthing the burner- 3 neutral conductor terminals prewired to terminal 2- 14 knockout holes for cable entry by means of cable glands 8 at the side 6 in the bottom of the base- 6 lateral threaded knockout holes for c
26、able entry glands Pg11 or M20Type summarySwitching times are given in the order of the startup sequence, valid for 50 Hz mains frequency. At 60 Hz frequency, switching timesare about 17 % shorter.Flash steam generators Universal use Medium- or heavy-oilburnersFlame supervision with QRB1. or QRC1. fo
27、r blue-flameburnersLAL1.25LAL4.25A27Flame supervision with QRB1. or RAR.Choice of air pressure supervisionChoice of semiautomatic startupLAL2.14 LAL2.25 LAL2.65Same as LAL2.25 with the following exception:No lockout, but prevention of startup in the case of extrane-ous lightSpecial applications such
28、as incinerator plantsLAL3.25t1 10 s 22.5 s 67.5 sTSA 4 s 5 s 5 st3 2 s 2.5 s 2.5 st3 From the start )t3n 10 s 15 s 15 st4 8 s 7.5 s 7.5 st5 4 s 7.5 s 7.5 st6 10 s 15 s 15 st7 2 s 2.5 s 2.5 st8 30 s 47.5 s 92.5 st10 6 s 10 s 10 st11 Optionalt12 Optionalt13 10 s 15 s 15 st16 4 s 5 s 5 st20 32 s 35 s 1
29、2.5 s) With air pressure supervision: From the time the air pressure signal is receivedLAL.LAL3.25HousingPlug-in base6/20Siemens Building Technologies CC1N7153enHVAC Products 14.10.2002OrderingWhen ordering, please give full type reference according to Type summary.AccessoriesPlug-in base- With Pg11
30、 threads for cable entry glands AGM410490500- With M16 threads for cable entry glands AGM13.1Technical dataMains voltage- With LAL1. / LAL2. / LAL3. incl.AC 230 V 15 / +10 %AC 100 V 15 %.AC 110 V +10 %Mains frequency 50.60 Hz 6 %Unit fuse (built-in) T6,3H250V to DIN EN 60 127Primary fuse (external)
31、max. 10 A (slow)Weight- LAL.- Plug-in baseapprox. 1,000 gapprox. 165 gFlame detectors:- QRB1.- QRC1.- RAR.refer to Data Sheet 7714refer to Data Sheet 7716refer to Data Sheet 7713Power consumption approx. AC 3.5 VAMounting position optionalDegree of protection IP 40, when fitted, with the exception o
32、f theconnection area (terminal base)Safety class IIPerm. input current at terminal 1 max. 5 A (peaks of 20 A / 20 ms)Perm. current rating of control terminals3, 6, 7, 9.11 and 15.20max. 4 A (peaks of 20 A / 20 ms)Required switching capacity of switchingdevices- Between terminals 4 and 5- Between ter
33、minals 4 and 12- Between terminals 12 and LP- Between terminals 4 and 14- LP1 A, AC 250 V1 A, AC 250 V1 A, AC 250 V5 A (peaks of 20 A)5 ADegree of protection IP 00Cable connection screw terminalcross-sectional area of wire: 0.5.1.5 mmWith stranded wires use adequate ferrulesTransport DIN EN 60 721-3
34、-2Climatic conditions class 2K2Mechanical conditions class 2M2Temperature range -50.+60 CHumidity 95 % r.h.Operation DIN EN 60 721-3-3Climatic conditions class 3K5Mechanical conditions class 3M2Temperature range -20.+60 CHumidity 95 % r.h.Condensation, formation of ice and ingress of water are not p
35、ermitted!General unit data LAL.Plug-in base AGM.Environmentalconditions7/20Siemens Building Technologies CC1N7153enHVAC Products 14.10.2002LAL1. with LAL2. / LAL3. with LAL4. withQRB1. QRC1. QRB1. RAR. QRB1. QRC1.Min. detector current requiredat AC 230 V95 A 80 A 8 A 6,5 A 95 A 80 AMax. permissible
36、detectorcurrent with no flame12 A 12 A 0.8 A 0.7 A 12 A 12 AMax. detector current that canoccur160 A 130 A 35 A 30 A 160 A 130 AInstruments +pole To terminal23To terminal23To termi-nal 22To terminal 22 To terminal23To termi-nal 23Length of detector cableIn the same cable as thecontrol linesMax. 30 m
37、 - Not per-mitted- Max. 30 m -Separate cable in cable duct Max. 1000 m - 20 m RAR7.: 30 m Max. 1000 m -3-core cable - Max. 1 m - - - Max. 1 m2-core cable for the detectorline (bl, sw); separate single-core cable for the live con-ductor (br)- Max. 20 m - - - Max. 20 mShielded cable (e.g. RG62,shield
38、insulated)- - 200 m RAR8.: 100 m - -Shield - - To termi-nal 23- - -23LAL1.22A DC+QRB1.7153v01/0498LAL4. 2322LAL1.LAL4.1swbl brA DC+QRC1.7153v05/049823LAL2.LAL3.22+A DCQRB1.7153v02/049824LAL2.LAL3.22+A DC+RAR.7153v03/0498Flame supervision8/20Siemens Building Technologies CC1N7153enHVAC Products 14.10
39、.2002Function2-stage expanding flame burner Modulating expanding flame burnerFSBV2min.LK0.MR100%LRBV1M1M2ZMPRTt12t4t16t5A B CDt11t13t6t7 t1t3 t3nTSAt37153a09/0498RLRt5t11 t12t13FSmin.LK0.M100%RVABV1M2ZMPRM1Tt4t3t7 t1TSABt6C D7153a10/0498BV. Fuel valve M. Fan or burner motorFS Flame signal amplifier
40、R Control thermostat or pressurestatLK Air damper RV Modulating fuel valveLR Load controller Z Ignition transformerThe following features of the LAL. afford a high level of safety:- Detector and flame simulation test are restarted on completion of the afterburn timet13. Open or not fully closed fuel
41、 valves immediately initiate lockout at the end oft13. The test ends on completion of the prepurge time t1 of the next startupsequence- The correct functioning of the flame supervision circuit is automatically checkedduring each burner startup sequence- The control contacts for the release of fuel a
42、re checked to ensure they have notwelded t6- A built-in unit fuse protects the control contacts against overloads- Burner operation with or without postpurge- Fan motors with a current draw of up to 4 A can be connected directly g174 startingcurrent max. 20 A (for max. 20 ms)- Separate control outpu
43、ts for preignition from start command postignition until shortly before the burner startup sequence is completed short preignition with postignition up to the end of TSA- Separate control outputs for the actuators positioning directions OPEN, CLOSEand MIN- Checked air damper operation to ensure prep
44、urging with the nominal air volume- Checked positions:- CLOSED or MIN on startup g174 low-fire position- OPEN at the beginning of prepurging- MIN on completion of prepurgingIf the actuator does not drive the air damper to the required position, the burnerstartup sequence will be stopped- 2 control o
45、utputs for the release of the second and third output stage or for loadcontrol- When load control is enabled, the control outputs for the actuator will be galvani-cally separated from the burner controls control section- Connection facilities for remote lockout warning device remote reset remote eme
46、rgency shutdown- In addition, with LAL2. / LAL3. / LAL4.: possibility of air pressure supervision with functional test of the air pressuremonitor on startup possibility of semiautomatic burner startupLegendGeneralControl of the burner9/20Siemens Building Technologies CC1N7153enHVAC Products 14.10.20
47、02- Flame detector and flame simulation test are made automatically during burner offtimes 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 wirelink on the plu
48、g-in section of the LAL. must be cut away g174 start repetition- Burner control is not in the lockout position- Sequence switch is in its start positiong174 with LAL1., voltage is present at terminals 4 and 11g174 with LAL2. / LAL3. / LAL4., voltage is present at terminals 11 and 12- Air damper is c
49、losed- End switch z for the CLOSED position must feed power from terminal 11 to ter-minal 8- Contact of the limit thermostat or pressure switch W and the contacts of anyother switching devices in the control loop between terminals 4 and 5 must beclosed g174 e.g. a control contact for the oil preheaters temperatureWith the exception of LAL1.- Normally closed contact of the air pressure switch must be closed g1
