LEC1... Control Units. Siemens Building Technologies HVAC Products

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1 7 71 ISO 9001 ontrol Units LE1... ontrol unit for doule- or multiflme supervision of oil, gs or forced drft oil / gs urners of ny fuel throughput, suited for continuous or intermittent opertion. he LE1... nd this Dt Sheet re intended for use y OEs which integrte the control units in their products! Use he LE1... is designed for the fully utomtic strtup nd supervision of forced drft oil or gs urners where flme supervision should or must e crried out y seprte flme sfegurds, e.g. with: Doule supervision of the min flme or pilot nd min flme y 2 identicl or different detectors Supervision of forced drft oil / gs urners with different types of detectors, depending on the selected operting mode ultiflme supervision, tht is, centrl nd simultneous control of the strtup nd supervision sequence of severl urners the flmes of which must e individully supervised y 1 or 2 flme sfegurds ech Supplementry Dt Sheets LAE10 Dt Sheet 7781 LFE10 Dt Sheet 7781 LFE50 Dt Sheet HVA roducts

2 he following types of flme sfegurds re ville: LAE10 LFE10 LFE50 For the supervision of oil urners with n ctive selenium photocell detector RAR in intermittent opertion For the supervision with n ioniztion proe (gs urners) or with UV detectors QRA (gs, oil or dul-fuel urners, with or without ignition sprk proving) in intermittent opertion For the supervision with UV detectors QRA50 / QRA51 (gs, oil or dul-fuel urners) in intermittent or continuous opertion All units comply with the relevnt Europen stndrds for oil, gs nd forced drft urners of ny fuel throughput. he LE1... cn control the following urner plnt components: Fn motor, flue gs fn, ir dmper, ignition trnsformer, 1 to 3 fuel vlves, lod controller, nd n externl fult signling device. A lod controller with 3-position output cn e connected. Design, control sequence nd djustment fcilities of the control unit mke it suitle for use on comustion plnts of ny size nd type, e it in connection with expnding flme or interrupted pilot urners, continuously operting urners or ny other specil urners. Specil fetures - repurge time djustle etween 8 nd 3 seconds - Opertion with or without postpurging - Fully utomtic control of ir dmper possile, irrespective of the ctutor run time - ossiility of ir pressure check in connection with functionl control of the ir pressure switch prior to strtup - hoice of ignition: Direct ignition with pilot urner, with or without ignition sprk proving - reignition time cn e set to «Long» (during the prepurge time) or «Short» (3 seconds, e.g. for forced drft gs urners) - 1st nd 2nd sfety time djustle etween 0 nd 9 seconds - Automtic extrneous light test during urner off periods nd during the purging times (with lockout in the event of fulty flme signls) - Semi-utomtic urner strtup nd opertion possile - Built-in lockout wrning lmp - Electricl remote reset fcility - over with 2 dditionl seling screws to provide protection ginst tmpering (refer to «Dimensions») - ontinuous disply of the progrm sequence in the cover s viewing window - In the event of fult, the progrm indictor shows the operting phse during which the fult occurred - otor of the progrmming mechnism cn e switched off to simplify urner djustments - mshft cn e rotted mnully 2/17

3 Wrning notes o void injury to persons, dmge to property or the environment, the following wrning notes should e oserved! Only uthorized stff my open, interfere with or modify the unit! ounting notes Before performing ny wiring chnges in the connection re of the LE1, completely isolte the unit from the mins supply (ll-polr disconnection) Ensure protection ginst electricl shock hzrd y providing dequte protection for the unit s terminls heck to ensure tht wiring is in n orderly stte ress lockout reset utton only mnully (pplying force of no more thn 10 N), without using ny tools or pointed ojects Fll or shock cn dversely ffect the sfety functions. Such units my not e put into opertion, even if they do not exhiit ny dmge Do not press the lockout reset utton on the unit or the remote lockout reset utton for more thn 10 seconds since this dmges the lockout rely in the unit Ensure tht the relevnt ntionl sfety regultions re complied with ounting work must e crried out y qulified stff Locte ignition electrode nd ioniztion proe such tht the ignition sprk cnnot rc over to the ioniztion proe (risk of electricl overlods) Instlltion notes Instlltion work must e crried out y qulified stff Alwys run the high-voltge ignition cles seprtely while oserving the gretest possile distnces to the unit nd to other cles 4 extr terminls for the erth conductor, 4 extr terminls for the neutrl conductor, nd 4 uxiliry terminls In the event of loss of flme during opertion, the control unit will initite lockout 3/17

4 ommissioning notes ommissioning work must e crried out y qulified stff rior to commissioning, ensure tht wiring is in n orderly stte ontinuous disply of the progrm sequence in the viewing window: It is lso possile to progrm the unit y mens of chngeover link (UL3) in wy tht the progrmming mechnism does not stop in cse of lockout, ut tht it runs to the end of the progrm. he only component tht receives power during tht period of time is the fn for postpurging (connected to terminl 17) he motor of the progrmming mechnism cn e switched off (simplifies urner djustments) he cmshft cn e rotted mnully For setting instructions, refer to «Adjustment fcilities on the unit» When commissioning the plnt or when crrying out mintennce work, mke the following checks: Sfety check Anticipted response ) Burner strtup with flme detector drkened Lockout t the end of «SA» ) Burner strtup with flme detector exposed to extrneous light Lockout fter no more thn 40 seconds c) Burner opertion with simulted loss of flme Immedite lockout d) Burner strtup with open-circuit of ir pressure switch (not with tmospheric urners) Lockout t the end of the specified time «t10» e) Burner opertion with simulted ir pressure filure (not with tmospheric urners) Immedite lockout ertifictes onformity to E directives - Electromgnetic comptiility E (immunity) - Directive for gs pplinces Low-voltge directive 89 / 33 EE 90 / 39 EE 73 / 23 EE ISO 9001: 2000 ert ISO 14001: 199 ert Identifiction code F B L L B N Service notes intennce work must e crried out y qulified stff Ech time unit hs een replced, check to ensure tht wiring is in n orderly stte nd mke the sfety check ccording to «ommissioning notes» 4/17

5 Disposl notes he unit contins electric nd electronic components nd my not e disposed of s household wste. Locl nd currently vlid legisltion must e oserved. echnicl design he LE1... s well s the flme sfegurds LAE10 nd LFE10 re of plug-in design nd suitle for mounting in ny position on the urner, on control desks or in control pnels. he spcious terminl ses nd housings re mde of impct-proof nd het-resistnt plstic. he progrmming mechnism of the unit (driven y synchronous motor), its uxiliry relys nd ll other switching, control nd djusting elements re mounted on roust printed circuit ords. ype summry nd ordering ype reference * Rted voltge Fctory settings for mins t1 SA t9 frequency LE1 / 8851 A V 50 Hz 0 s 2 s 2 s LE1 / 8853 A V 50 Hz 30 s 2 s 2 s LE1 / 88 A V 50 Hz 30 s 2 s 2 s LE1 / 887 A V 0 Hz 30 s 2 s 2 s LE1 / 888 A V 0 Hz 30 s 2 s 2 s LE1 / 8892 A V 50 Hz 0 s 5 s 5 s LE1.1 / 8854 A V 50 Hz 17 s 2 s 2 s LE1 / 9500 A 230 V 0 Hz 0 s 4.5 s 4.5 s LE1 / 9501 A V 50 Hz 0 s 4.5 s 4.5 s LE1 / 9502 A V 0 Hz 0 s 4.5 s 4.5 s LE1 / 9503 A 230 V 50 Hz 0 s 4.5 s 4.5 s he control unit is delivered without terminl se. he ltter must e ordered s seprte item using the following prt numer: AGG (E) or AGG12.1 * he type reference is given ner the terminls inside the housing Accessories erminl se - o e ordered s seprte item - For g 11 erminl se - o e ordered s seprte item - For 1 x 1.5 AGG (E) AGG12.1 5/17

6 echnicl dt Generl unit dt Environmentl conditions ins voltge A 220 V -15 %...A 240 V +10 % A 100 V -15 %...A 110 V +10 % ins frequency Hz ± % Unit fuse, uilt-in.3h250v to DIN EN Externl fuse mx. 10 A (slow) ower consumption - During strtup - During opertion ermissile lod on the control outputs - er terminl - otl Degree of protection ounting position 8 VA 5 VA mx. 4 A to VDE 00 A3 mx. 5 A to VDE 00 A3 I 40 (to e ensured through mounting) Optionl le glnds - g11 or - BS ¾ or - metric 1 x 1.5 Weight pprox. 2 kg rnsport DIN EN limtic conditions clss 2K2 echnicl conditions clss 22 emperture Humidity < 95 % r.h. Opertion DIN EN limtic conditions clss 3K5 echnicl conditions clss 32 emperture Humidity < 95 % r.h. ondenstion, formtion of ice nd ingress of wter re not permitted! Flme supervision With LAE10 With LFE10 With LFE50 /17

7 Function he following description of the unit s function refers to the strtup nd supervision of single urner. With multiflme supervision, ll urners connected to the control unit re put into opertion nd supervised simultneously in the sme mnner. A fult cusing lockout of one of the urners therefore results in the shutdown of ll urners. rerequisite for the immedite restrt of the non-fulty urners is the ridging of the flme sfegurd of the fulty urner y mens of n operting switch. his switch must simultneously cut ll control lines to the ignition trnsformer nd the fuel vlves. For connection exmples, refer to the Dt Sheet on the LAE10 / LFE10. rerequisites for urner strtup he urner strts only if: - he unit s switching sequence is in the strt position - he control unit is not in the lockout position, e.g. due to fulty UV tue - he contcts of ll the control nd sfety devices in the control loop etween terminl 8 nd 9 re closed - he ir pressure switch does not indicte ny ir pressure if connected in the test circuit Strtup sequence... Fults in the flme sfegurd or in the control unit prevent strtup or led to lockout during strtup. If the ir dmper is not controlled y the control unit, terminls 20, 21 nd 22 must e interconnected.... on strtup First, the fn motor is switched on vi terminl 3 nd the ctutor is controlled vi terminl 22. When the ir dmper reches its fully open position, the progrmming mechnism of the unit strts to run the prepurge time commences. he minimum ir pressure set on the ir pressure switch must then e reched within 10 seconds (or within 7 seconds in opertion with postpurging) nd must e mintined until controlled shutdown occurs. Otherwise, lockout will tke plce. A flme signl during the prepurge time lso leds to lockout. On completion of the set prepurge time, the ir dmper is given the control commnd to return to the minimum ir position. During the ir dmper s closing time, the progrmming mechnism does not move. As soon s the signl contct for the minimum throttling position is operted y the ctutor, the progrmming mechnism strts gin nd now controls the progrm sequence which cn no longer e influenced from outside. - reignition (provided the ignition equipment ws not lredy switched on during the prepurge time) - Relese of the 1st fuel vlve connected to terminl 5 (the fuel vlve of pilot urner which must e closed on completion of the 2nd sfety time must, however, e connected to terminl 10) - he set sfety time elpses. If no flme is estlished during tht period of time, lockout will e initited (control unit lwys locks itself) - On completion of n intervl of 11 seconds fter the relese of the 1st vlve, the 2nd fuel vlve will e relesed - he pilot urner if present is switched off (connected to terminl 10) - he lod controller is switched on fter further intervl of 12 seconds. Now the urner hs reched its operting position. From now on, the lod controller controls the urner s output y either incresing or decresing the fuel throughput nd the ir volume depending on het demnd (fuel / ir rtio control). his cn e ccomplished in stges, i.e. y mens of thermostts or continuously (modulting) y modulting controller Loss of flme during opertion lwys leds to lockout of the urner. 7/17

8 Burner strtup with ignition sprk proving In principle, the progrm sequence is the sme s with urner strtup without ignition sprk proving. Exceptions: - If the UV flme detector does not receive ny input signl during the short preignition time (UL2 on «Short preignition»), lockout occurs efore ny gs is relesed, i.e. sfety time SA = 0 seconds - With ignition sprk proving, the sfety time for the pilot urner cn only e djusted etween 0... seconds (in the time digrm of the progrmming mechnism: SA ) ontrol sequence... rogrm indictor... fter controlled shutdown ontrolled shutdown occurs s soon s one one of the control or supervision devices in the control loop etween terminl 8 nd 9 opens its contct. In tht cse, the fuel vlves will immeditely e shut. he progrmming mechnism strts gin nd now progrms postpurging, if required. On completion of the postpurge time, the progrmming mechnism hs gin reched its strt position where it remins until the next switch on commnd is received. he flme supervision restrts gin during the postpurge time. herefore, ny flme signl during tht period of time will led to lockout.... fter resetting the LE1... After pressing the uilt-in or the externl lockout reset utton, the progrmming mechnism will return to its strt position. he only urner plnt component tht is operted during tht period time is fn motor connected to terminl 17. As the control thermostt or pressurestt normlly continues to cll for het, the progrmming mechnism will initite restrt fter reching the strt position. LANDIS & GYR ype Serie ts s V~ c/s Hz VA 4A V~ 2A t1 = s A B D E G (1) 3 771z01/1102 he progrm indictor continuously shows the respective phse of the urner strtup sequence. he letters correspond to those of the progrmming mechnism digrm next to the viewing window. he figures indicte the remining prepurge time. If lockout occurs, the progrmming mechnism nd the progrm indictor stop, thus indicting the operting phse during which lockout occurred. Reding the progrm indictor Exmples: repurge time will lst nother 35 seconds Vlve 2 t terminl 7 is opened F E D 8/17

9 Adjustment fcilities on the unit Before mking ny djustments, disconnect the unit from the mins supply Loosen ll retining screws nd only remove the unit cover he numering of the switching cms lwys strts from the motor he cmshft cn e mnully turned into ny position (clockwise direction of rottion s seen from the motor) 771p03/0201 Setting elements: N1 m 1, fixed N2 m 2, djustle (1st sfety time) N3 m 3 djustle (1st sfety time) N4 m 4, fixed N5 m 5, djustle (2nd sfety time) N7 m 7, fixed N8 m 8, djustle (prepurge time) A rogrm indictor UL1 ON / OFF switch for the motor of the switching mechnism UL1 N1 N2N3 N4 N5 N7 N8 A On the rer side of the se: UL2 hngeover link for «Short / long preignition», in position «Short preignition» locked with vrnish UL3 hngeover link for «SO» of the control sequence following lockout or «restrt». Only the fn for postpurging connected to terminl 17 remins energized Adjusting the preignition time D «Long preignition time» (during prepurging) «Short preignition time» (3 s, fctory setting) D Loosen the screw efore mking the djustment nd then tighten it crefully. 771p09/09 Adjusting the prepurge time t1» - Loosen the fixing screw of the red cm N8 - urn cmshft mnully until the required prepurge time is indicted next to the index notch on the crrier of the progrmming mechnism - Hold cmshft firmly nd rotte cm N8 until the contct tppet operted y it just jumps out or the cm strikes this tppet - refully tighten the fixing screw of the cm nd check the djusted time for ccurcy. he set time is lso visile in the viewing window, if the unit is in its strt position Adjustment of the mrk of the red cm N8 to the grdution mrks of the lck cm N7 results in the prepurge times given in the opposite tle. Ι ΙΙ ΙΙΙ N7 N8 Adjustment to Grdution mrk I Grdution mrk II Grdution mrk III Adjustment t stop Fcory setting 771p04/098 t1 8 s 18 s 28 s 3 s pprox. 30 s or 0 s 9/17

10 Adjusting the sfety times «SA» he sfety times re djusted y setting the red cms of the progrmming mechnism. heir time mrks serve s setting id. After the djustment, the fixing screws of the cms must e tightened very crefully to mke ny unintentionl redjustment impossile. 771p07/129 Ignition sfety time «SA» (Opertion with ignition sprk proving) - Loosen the fixing screws of cms N2 nd N3 - Hold cm N1 firmly nd lign the setting mrk of cm N2 with the corresponding time mrk I of cm N1 (see illustrtion nd tle, intermedite positions possile). Lock cm N2 - Rotte cm N3 in such wy tht its setting mrk is set ginst the lower stop of cm N2. Lock cm N3 - heck the djusted sfety time nd set the new vlue on the rting plte of the unit cover (djustment slot t the rer of the cover) 1st sfety time «SA» (Opertion with ignition sprk proving) - Loosen the fixing screws of cms N2 nd N3 - Hold cm N1 firmly, set the setting mrk of cm N2 to the time mrk I of cm N1 (see illustrtion nd tle). Lock cm N2 - Hold cm N2 firmly, set the setting mrk of cm N3 to the required time nd lock cm N3 (see illustrtion nd tle) - heck djusted sfety time nd set the new vlue on the cover s type field (setting slot underneth the cover) III II I N1 N2 N3 Adjusted to SA Grdution mrk I 0 s Grdution mrk II 4.5 s Grdution mrk III 9 s Fctory setting < 2 s 771p07/129 III II I N1 N2 N3 Adjusted to SA stop in the direction of the rrow 0 s the other stop s Fctory setting 0 s 2nd sfety time «t9» - Loosen the fixing screw of cm N5 nd lign its setting mrk to the corresponding time mrks of cm N4 (see illustrtion nd tle, intermedite positions possile) 771p08/129 III II I N4 N5 Adjusted to Grdution mrk I Grdution mrk II Grdution mrk III Fctory setting t9 0 s 4.5 s 9 s < 2 s 10/17

11 Bsic digrm H (R) SB 1 EK2* 1 AS r1 EK1* UL3 VIII IX 18 L 19 r1 8 9 W G R (R) r3 3 N 1 ~ (11) LK ~ N y z XIII 20 VIII hr11 N IX hr21 X hr12 II XI HR2 IV VII I XII IV UL2 AR III V VI r2 r2 BR HR1 UL1 L1 S L2 Z 77101/1102 N (p) BV1 (BV1) BV2 BV3 * Do not press EK for more thn 10 seconds! 2 ~ LAE10... / LFE10... (R) H 15 LE hr3 5 FR L3 1 LFE10... HR QRA... + FE LAE RAR LE N(p) 77102/089 When using UV detector QRA..., terminl 10 must e connected to erth! 11/17

12 Sequence digrm of progrmming mechnism I II III IV V 81 SA79 SA 7 t4 t9 90 t3 t5 VI VII VIII IX X XI 3 t7 t t XII XIII t11 t1 771d01/0201 t8 3 t12 t Legend AS Unit fuse LK Actutor with limit or uxiliry switches AR Lod rely with contcts «r...» (refer so «onnection exmples») BR Lockout rely with contcts «r...» = ctutor trvels to the OEN position BV... Fuel vlve (mximum ir volume) (BV...) Fuel vlve for pilot urner tht is switched off on z = ctutor trvels to the LOSED position completion of the 2nd sfety time (minimum ir volume) c... Fn contctor with contcts «c...» L Air pressure switch d... Auxiliry rely with contcts «d...»... Fn motor, fn e... herml cutout N Resistor with negtive temperture coefficient EK1 Lockout reset utton on LE1... OV... Oil vlve EK2 Remote lockout reset utton Q emperture or pressure sensor FE Ioniztion proe QRA... UV detector FR Flme rely with contcts R... ontrol thermostt or pressurestt ontcts of flme sfegurds LAE10..., LFE10... RAR... Selenium photocell detector or LFE50... RV ontrol vlve G Gs pressure switch SB Sfety limiter GV... Gs vlve S Synchronous motor of progrmming mechnism H in switch SQ... ype reference of ir dmper ctutor HR1 Auxiliry rely with contcts «hr11 / hr12» UL1 Operting switch for motor of progrmming mechnism HR2 Auxiliry rely with contct «hr21» cn only e ccessed fter removl of housing cover HR3 Auxiliry rely for flme detector or flme simultion UL2 hngeover link for «Short / long preignition time» est UL3 hngeover link for «SO» or «Run» of the L1 Lockout wrning lmp, uilt-in progrmming mechnism fter lockout L2 Lockout wrning lmp, externl W Limit thermostt or pressure switch L3 Signl lmp for flme indiction Z Ignition trnsformer Switching 120 s Run time of progrmming mechnism times SA s Ignition sfety time (setting = 0 s in the cse Ignition sfety time of ignition sprk proving) SA 0... s First sfety time for the pilot urner in the cse of strtup with ignition sprk proving t s Adjustle prepurge time t3 t11 + t1 + t s Long preignition time (during the entire prepurge) t3 3 s Short preignition time t4 11 s Intervl etween relese of the 1 st nd 2 nd fuel vlve t5 12 s Intervl etween relese of the 2 nd nd 3 rd fuel vlve or the lod controller t (30 + t1) ostpurge time t7 3 s Dely time t8 t t11 + t12 otl strtup time strtup sequence t s 2nd sfety time with interrupted pilot urner t10 10 s rnsition time - preset time for ir pressure signl t11 optionl rogrmmed opening time for ctutor «SA» t12 optionl rogrmmed closing time for ctutor «SA» For the fctory setting of the different types, plese refer to «ype summry». 12/17

13 onnection exmples nd sequence digrms For connection exmples nd switching progrm for flme supervision with DEAOGYR LFE50..., refer to Dt Sheet Doule- or multiflme supervision of oil urners Strtup with long preignition «t3» nd checked ctutor control. Air pressure supervision from the strt to controlled shutdown. No lod control. Required type of flme sfegurds: LAE10... with selenium photocell detector RAR... * When using n ir pressure switch «L», the connections etween terminls 3 nd 4 nd 8 nd 18 re not required LE1... UL * * EK2 1 SB H e1 e2 c2 OV2 LK e1 c2 e2 7 5 (LAE10...) L2 L R1 W z N LK Z OV1 OV3 Luft Öl OV3 OV2 (R) N (p) 77103/ /09 OV1 Air dmper control, detiled In the cse of urners without ir dmper or with n ir dmper not controlled y the control unit, terminls 20, 21 nd 22 must e interconnected. Link is not permitted however! / 18// 20 LK"" A B D E LK"z" 771d03/09 t11 t1 t12 t11 tn t t12 A t8 1 Kl.3 t t11 t1 t12 LK 22/21 SA Z t3 OV1 5 t4 OV2 7 OV3 11 B t5 t D E F G H I t K t7 t1 SA t3 t4 t5 L 13/14 L d02/ /17

14 onnection exmples nd sequence digrms (cont d) Doule- or multiflme supervision of gs urners (expnding flme urners) Strtup with short preignition (3 seconds) nd checked ctutor control. Required type of flme sfegurds: LFE10... with UV detectors QRA... or ioniztion proe. LE1... UL EK2 1 SB H G e1 e2 c2 GV2 LK e1 c2 e2 7 5 (LAE10...) L2 L R1 W z N LK Z GV1 GV3 Luft Gs GV3 GV2 (R) N (p) 77105/ /09 GV1 Air dmper control, detiled In the cse of urners without ir dmper or with n ir dmper not controlled y the control unit, terminls 20, 21 nd 22 must e interconnected. Link is not permitted however! / 18// 20 LK"" A B D E LK"z" 771d04/09 t11 t1 t12 t11 tn t t12 A t8 1 Kl.3 t t11 t1 t12 LK 22/21 SA Z t3 GV1 5 t4 GV2 7 GV3 11 B t5 t D E F G H I t K t7 t1 SA t3 t4 t5 L 13/14 L d05/0401 Legend A Strtup G-H Opertion A-B Norml strtup H Loss of flme B- Opertion H-I Lockout ontrolled shutdown I Reset -D ostpurging I-K Home run D-E losing of the ir dmper K Restrt E-F Burner off period K-L Strtup F Restrt L 4 Opertion F-G Strtup 14/17

15 onnection exmples nd sequence digrms (cont d) Doule- or multiflme supervision of urners for selectle opertion with oil or gs (expnding flme urner) Strtup with short preignition (3 seconds) nd checked ctutor control. ontrol of the 2nd output stge vi on / off controller «R2». Required type of flme sfegurds: LFE10... with UV detectors QRA... EK2 (R) 1 (17) LE e1 SB H 2 c2 e2 N (p) L /c2 7 5 (LFE10) e1/e2 /c2 L BS /089 W UL BS1 IV R2 R1 I II III z G LK 100% 0% 33% 38% 31% 4% N (SQ...) GV3 OV3 Z 5 GV1 10 OV1 7 GV2 OV2 11 BS2 I II III Öl OV1 OV2 Operting switch BS1 I Nominl lod II Stop III rtil lod IV Automtic control Luft LK OV3 Operting mode selector BS2 I Gs II Off III Oil Gs GV /09 GV2 GV3 15/17

16 onnection exmples nd sequence digrms (cont d) Doule- or multiflme supervision of modulting urners Including checked ctutor control. Required type of flme sfegurds: For oil LAE10 with ctive selenium photocell detectors RAR... For gs LFE10 with UV detectors QRA... or ioniztion proe For oil / gs LFE10 with UV detectors QRA LE1... UL e1 1 EK2 2 c2 e2 SB H (LAE10, LFE10) L2 L ** G R * W e1 I II LK IV III BS N 1 2 z RV SQ... L NY1 Q Y2 RWF40 e2 c2 Z BV1 (R) N (p) 77110/0503 * G: Not required with oil urners ** L: Recommended for oil urners, if the oil pump is not coupled to the fn motor Air Fuel BV1 LK RV SQ e/0501 Operting switch BS1 I Nominl lod II Stop III rtil lod IV Automtic control Burners designed for continuous djustment of the urner s output (modulting urners) require the devices of the temperture or pressure control circuit, in ddition to the stndrd urner equipment, e.g. 1 odulting controller RWF emperture or pressure sensor QA... / QB... 1 Remote setting unit, if required FZA... 1 Actutor for the control of the ir dmper nd the fuel throughput SQ... (fuel / ir rtio control) 1 Auxiliry rely 1 Operting switch BS 1 ontrol vlve or similr for djustment of the fuel throughput RV ontrol for semiutomtic operting mode L N (p) 77107/09 0 I W his circuit is used if, for certin resons, fully utomtic opertion is not required (e.g. with industril urners). he urner is strted up y ctuting impulse contct I; the urner is shut down y either pressing circuit-reking contct 0 or when the limit thermostt cuts out. 1/17

17 Dimensions Dimensions in mm LE1... AGG (E) g11/3/4"-1dnf A 210 B A SG EK 13,5 14, A B A 771m01/1102 4,5 17, LE1... AGG x 1,5 3,7 33 9,7 4,7 4,5 18,9 17, , , , ,7 o remove the control unit from the plug-in se, loosen only the 4 screws A. o remove the unit cover, lso loosen the 2 screws B. Legend EK SG Elongted holes for fixing the se Lockout reset utton Viewing window 2003 Suject to chnge! 17/17

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