7 451 Burner Controls LFL1... Burner controls For gs, oil or dul-fuel forced drft urners of medium to high cpcity For multistge or modulting urners in intermittent opertion With checked ir dmper control Flme supervision with UV detectors Q... nd ioniztion proe The LFL1... nd this Dt Sheet re intended for use y OEs which integrte the urner controls in their products! Use - Control nd supervision of forced drft urners of expnding flme or interrupted pilot construction - For medium to high cpcity - For intermittent opertion (t lest one controlled shutdown every 24 hours) - For universl use with multistge or modulting urners - For use with dul-fuel urners - For use with sttionry ir heters The difference etween 01 series nd 02 series is the durtion of the sfety time for the pilot urner of urners equipped with pilot gs vlves. For tmospheric urners of high cpcity, use the LFL1.638. For urner controls suited for continuous opertion, refer to Dt Sheet 7785 (LGK16...). 25.04.2005 HVC Products
Wrning notes To void injury to persons, dmge to property or the environment, the following wrning notes should e oserved! Do not open, interfere with or modify the unit! ll ctivities (mounting, instlltion nd service work, etc.) must e performed y qulified stff Before performing ny wiring chnges in the connection re of the LFL1, completely isolte the unit from the mins supply (ll-polr disconnection) Ensure protection ginst electric shock hzrd y providing dequte protection for the urner control s connection terminls Check to ensure tht wiring is in n orderly stte Press the lockout reset utton only mnully (pply force of no more thn 10 ), without using ny tools or pointed ojects 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 Fll or shock cn dversely ffect the sfety functions. Such units must not e put into opertion, even if they do not exhiit ny dmge In the cse of flme supervision with UV detectors Q..., it should e noted tht sources of rdition such s hlogen lmps, welding equipment, specil lmps, ignition sprks, s well s X-rys nd gmm rdition, cn produce erroneous flme signls ounting notes Ensure tht the relevnt ntionl sfety regultions re complied with When using 2 UV detectors Q..., mke certin tht the detectors cnnot see one nother Instlltion notes lwys run the high-voltge ignition cles seprtely while oserving the gretest possile distnce to the unit nd to other cles Do not mix up live nd neutrl conductors Electricl connection of flme detectors It is importnt to chieve prcticlly disturnce- nd loss-free signl trnsmission: ever run the detector cle together with other cles Line cpcitnce reduces the mgnitude of the flme signl Use seprte cle Oserve the mximum permissile detector cle lengths (refer to «Technicl dt») 2 UV detectors Q... cn e connected in prllel In connection with the Q..., erthing of terminl 22 is mndtory The ioniztion proe is not protected ginst electric shock hzrd Locte the ignition electrode nd ioniztion proe such tht the ignition sprk cnnot rc over to the ioniztion proe (risk of electricl overlods) Supervision with oth ioniztion proe nd UV detector Q... is possile, ut for sfety resons with the exception of the second sfety time «t9» only 1 flme detector my e ctive t time. t the end of the second sfety time, 1 of the detectors must e inctive, however, tht is, the detected flme must hve extinguished, e.g. y switching off the ignition vlve vi terminl 17 2/18
Commissioning notes Prior to commissioning, check to ensure tht wiring is in n orderly stte When commissioning the plnt or when doing mintennce work, mke the following sfety checks: Sfety check to e crried out ) Burner strt with flme detector drkened ) Burner strt with flme detector exposed to extrneous light c) Burner opertion with simulted loss of flme; for tht purpose, drken the flme detector in opertion nd mintin tht stte (not possile with ioniztion) nticipted response Lockout t the end of «TS» Lockout fter no more thn 40 seconds Lockout Engineering notes Instll switches, fuses, erthing, etc., in complince with locl regultions Decisive for the connection of the vlves nd other plnt components is the plnt digrm provided y the urner mnufcturer 1 2 21 3 13 12 14 4 5 6 7 16 17 18 19 20 9 11 10 8 22 23 24 SB H Si L (1)/(3) v... EK2 L LP 1 2 W GP 1 d1 2 d2 BV 3 4 5 745114e/0604 6 7 S v BV3 z m TS, t3, t4, only: LFL1.335, LFL1.635 nd LFL1.638 + Q... 22 23 24 IO Connect sfety limit thermostt in the line (mnul reset, e.g. «SB») emote reset When remote reset utton «EK2» is connected etween terminl 21 nd - terminl 3, only remote reset is possile - terminl 1, oth remote emergency shutdown nd remote reset re possile equired switching cpcities - of the switching devices connected etween terminls 12 nd 4 (refer to «Technicl dt») - of the switching devices connected etween terminls 4 nd 14 (refer to «Technicl dt») - depending on the lods pplied to terminls 16...19 (refer to «Technicl dt») ir pressure supervision If the ir pressure is not monitored with ir pressure switch «LP», terminl 4 must e connected to terminl 12, nd terminl 6 to terminl 14. Terminl 13 is not used. Control contcts of the other devices in the urner instlltion if series-connected re to e connected s follows: - To terminl 4 or 5 contcts which must e closed from strtup to controlled shutdown otherwise no strt or shutdown - To terminl 12 contcts which must only e closed on strtup otherwise no strt - To terminl 14 contcts which must e closed t the eginning of the preignition time t the ltest, nd which must sty closed until controlled shutdown occurs otherwise lockout; this pplies to oth long nd short preignition Connection of fuel vlves with expnding flme urners. With 2-stge urners, is connected in plce of «BV3» Connection of fuel vlves with interrupted pilot urners Direct connection of fuel vlve to terminl 20 is only permitted - in plnts with min shutoff vlve on the mins side (sfety shutoff vlve), which is controlled y terminl 18 or 19, nd - if 2-stge vlves re used, provided they fully close when the first stge, controlled y terminl 18 or 19, is switched off For dditionl exmples of ir dmper control, refer to «Connection exmples». In the cse of ctutors with no end switch «z» for the fully CLOSED position of the ir dmper, terminl 11 must e connected to terminl 10 otherwise no urner strt. Simultneous use of ioniztion nd UV supervision is possile 3/18
Stndrds nd certifictes Conformity to EEC directives - Electromgnetic comptiility EC (immunity) - Low-voltge directive - Directive for gs pplinces 89 / 336 EEC 73 / 23 EEC 90 / 396 EEC ISO 9001: 2000 Cert. 00739 ISO 14001: 1996 Cert. 38233 Certified complete with plug-in se nd flme detector: Type reference LFL1.122 x --- x x x x x x LFL1.133 x --- x x --- x x --- LFL1.322 x --- x x x x x x LFL1.333 x --- x x x x x --- LFL1.335 x x x x x x x x LFL1.622 x --- x x x x x x LFL1.635 x --- x x x x x x LFL1.638 x --- x --- x --- x --- Identifiction code to E 298 ll types (except LFL1.148) F B L L X Service notes Ech time unit hs een replced, check to ensure tht wiring is in n orderly stte. ke the sfety check in ccordnce with section «Commissioning notes» Disposl notes The unit contins electricl nd electronic components nd must not e disposed of together with domestic wste. Locl nd currently vlid legisltion must e oserved. echnicl design LFL1... Housing - Plug-in design - Exchngele unit fuse (including spre fuse) - de of impct-proof nd het-resistnt lck plstic - Lockout reset utton with viewing window showing the fult signl lmp the lockout indictor - coupled to the progrm spindle - visile in the trnsprent lockout reset utton - uses esy-to-rememer symols to indicte the type of fult nd the time lockout occurred 4/18
Type summry Switching times re given in seconds, in the urner strtup sequence, vlid for 50 Hz mins frequency. t 60 Hz, switching times re out 17 % shorter. Flsh stem genertors LFL1.122 ¹) 02 series Flsh stem genertors LFL1.133 ¹) 02 series D (incl. sttionry ir heters) F LFL1.322 ¹) 02 series D LFL1.333 ¹) 02 series GB LFL1.335 ¹) 01 series F I LFL1.622 ¹) 02 series B L ²) LFL1.635 ¹) 01 series Lrge tmospheric urners LFL1.638 01 series t1 10 9 36 31 37 65 66 66 TS 2 3 2 3 2.5 2 2.5 2.5 TS 2 3 2 3 5 2 5 5 t3 4 3 4 6 5 4 5 5 t3 4 --- 4 6 2.5 4 2.5 2.5 t4 6 6 10 11.5 12.5 10 12.5 12.5 t4 6 --- 10 11.5 15 10 15 15 4 3 10 11.5 12.5 10 12.5 12.5 t6 10 14.5 12 17 15 12 15 15 t7 2 3 2 3 2.5 2 2.5 2.5 t8 30 29 65 69 74 95 103 103 t9 2 3 2 3 5 2 5 7.5 t10 6 6 8 11.5 10 8 10 10 t11 Optionl t12 Optionl t13 10 14.5 12 17 15 12 15 15 t16 4 3 4 6 5 4 5 5 t20 32 60 --- 26 22 --- --- --- ¹) ville s C 100...110 V versions; dd type suffix «-110 V» when ordering ²) eversed polrity protection conforming to Dutch instlltion stndrd: G30 Ordering Burner control, without plug-in se see «Type summry» Plug-in se not included in delivery, must e ordered s seprte item! Connection ccessories for medium-cpcity urner controls see Dt Sheet 7230 - Plug-in se G410490550 with Pg11 thred for cle entry glnds - Plug-in se G14.1 with 16 thred for cle entry glnds Flme detectors - Flme detectors Q... refer to Dt Sheet 7712 - Ioniztion proe to e supplied y thirds Test unit KF8806 for urner control see Operting Instructions B7987 - For simulting fults - For checking the pull-in nd drop-out vlues of the flme rely in the cse of flme supervision with flme detector Q... or ioniztion proe Test unit KF8804 for urner control - Tool to ssist strtup, with the possiility of progrm stop nd mesurement of the flme current 5/18
Technicl dt Generl unit dt LFL1... Environmentl conditions ins voltge C 230 V 15 / +10 % C 115 V 15 / +10 % ins frequency 50...60 Hz ±6 % Unit fuse (uilt-in) T6.3H250V to DI E 60 127 Primry fuse (externl) mx. 10 (slow) Weight pprox. 1,000 g Power consumption pprox. C 3.5 V ounting position optionl Degree of protection IP 40, when uilt in, with the exception of the connection re (terminl se) Sfety clss II Perm. input current t terminl 1 mx. 5 continuously (peks 20 / 20 ms) Perm. lod on control terminls 3, 6, 7, mx. 4 continuously (peks 20 / 20 ms) 9...11, 15...20 equired switching cpcity of switching devices - Between terminls 4 nd 5 - Between terminls 4 nd 12 - Between terminls 4 nd 14 Storge DI E 60721-3-1 Climtic conditions clss 1K3 echnicl conditions clss 12 Temperture rnge -20...+60 C Humidity < 95 % r.h. Trnsport DI E 60721-3-2 Climtic conditions clss 2K3 echnicl conditions clss 22 Temperture rnge -20...+60 C Humidity < 95 % r.h. Opertion DI E 60 721-3-3 Climtic conditions clss 3K3 echnicl conditions clss 33 Temperture rnge -20...+60 C Humidity < 95 % r.h. 1, C 250 V 1, C 250 V min. 1, C 250 V depending on the lod on terminls 16...19 Condenstion, formtion of ice nd ingress of wter re not permitted! Flme supervision with ioniztion proe Voltge t the ioniztion proe - Opertion - Test Short-circuit current ecommended rnge of mesuring instrument Perm. length of detector cle - orml cle, lid seprtely ²) - Shielded cle C 330 V ±10 % C 380 V ±10 % mx. 0.5 m 0...50 µ equired detector current in opertion min. 6 µ Possile detector current in opertion mx. 200 µ mx. 80 m mx. 140 m (e.g. high-frequency cle; shielding connected to terminl 22) 6/18
Technicl dt (cont d) Flme supervision with flme detector Q... Supply voltge - Opertion - Test C 330 V ±10 % C 380 V ±10 % equired detector current min. 70 µ Possile detector current - Opertion mx. 700 µ - Test mx. 1000 µ ¹) Perm. length of detector cle - orml cle, lid seprtely ²) - Shielded cle mx. 100 m mx. 200 m (e.g. high-frequency cle; shielding connected to terminl 22) ¹) During the prepurge time with higher test voltge: Self-ignition nd extrneous light test ²) ulticore cle not permitted esuring circuit for detector current mesurement Ioniztion proe + - LFL1... 24 + C 7451v01/0204 IO - Flme detector Q... - + 23 22 LFL1... C Q... + 7451v02/0204 For detector currents, refer to «Technicl dt». Legend C IO Electrolytic condenser 100...470 µf; DC 10...25 V Ioniztion proe icrommeter i mx. 5,000 Ω 7/18
Function 2-stge expnding flme urner Legend T P ~ 1 2 100% min. 0... FS B C D t7 t1 t6 t3 odulting expnding flme urner T P ~ 1 2 100% min. 0... V FS t7 t11 TS t4 t11 t12 t13 t1 t3 t12 745107/0600 2-stge interrupted pilot urner T P ~ 1 2 BV 100% min. 0... FS t12 745106/0600 t4 TS t4 B C t6 t13 B C D t7 t1 t11 t3 TS t9 745108/0202 t6 t13 D BV... FS... V BV B B-C C C-D D- t1 t3/t3 t4/t4 t6 t7 t9 t11 t12 t13 TS/ TS Fuel vlve Flme signl mplifier ir dmper Lod controller Fn or urner motor Control thermostt or pressurestt odulting fuel vlve Ignition trnsformer Pilot gs vlve Strt commnd y Operting position of urner Burner opertion Controlled shutdown Sequence switch trvels to strt position, postpurging End of control sequence Prepurge time with ir dmper fully open Preignition time Intervl «-» or «-» Intervl etween voltge t terminl 19 nd terminl 20 Postpurge time Intervl etween strt commnd nd voltge t terminl 7 2nd sfety time with urners equipped with pilot urner ir dmper s running time to the fully OPE position ir dmper s running time to the low-fire position Permissile fterurn time Ignition sfety time 8/18
Function (cont d) Generl Control of the urner Flme supervision Preconditions for strtup Preconditions for urner strtup The following fetures enle the LFL1... to offer high level of dditionl sfety: - Detector nd extrneous light test re resumed immeditely on completion of the fterurn time «t13». Fuel vlves tht re not closed, or not fully closed, immeditely initite lockout on completion of the fterurn time «t13». The test will only e terminted when the prepurge time «t1» of the next strtup sequence hs elpsed. - The proper functioning of the flme supervision circuit is utomticlly checked during ech strtup phse of the urner. - During the postpurge time «t6», the control contcts for the relese of fuel re checked to ensure they hve not welded. - The uilt-in unit fuse protects the control contcts ginst overlods. - Burner opertion with or without postpurging - Fn motors with current drw of up to 4 cn e connected directly strting current mx. 20 (mx. 20 ms) - Seprte control outputs for one pilot vlve, which will e shut on completion of the second sfety time - Seprte control outputs for the ctutor s positioning directions «OPE», «CLOSE» nd «I» - Checked ir dmper control to ensure prepurging with the nominl mount of ir - Checked positions: - «CLOSED» or «I» on strtup low-fire position - «OPE» t the strt of prepurging - «I» on completion of prepurging If the ctutor does not drive the ir dmper to the required position, the urner strtup sequence will e stopped - 2 control outputs for the relese of the second nd third output stge, or lod control - When lod control is enled, the control outputs for the ctutor will glvniclly e seprted from the unit s control section - Connection fcilities for - remote lockout wrning device - remote reset - remote emergency shutdown - With urner controls of the 01 series nd expnding flme urners, the sfety time cn e incresed from 2.5 to 5 seconds y chnging the circuitry (refer to «Connection exmples»), provided the longer sfety time conforms to locl sfety regultions - With the ioniztion proe, in networks with erthed or nonerthed neutrl conductor. For this kind of supervision, the flme supervision circuit is designed such tht possile disturnces of the ioniztion current due to the ignition sprk normlly hve no impct on the estlishment of the flme signl. short-circuit etween ioniztion proe nd urner ground cuses loss of the flme signl - With UV detector Q... (gs nd oil urners) - Simultneous use of ioniztion proe nd UV detector Q... (e.g. with interrupted pilot urners or gs-electriclly ignited oil urners) - If, on strtup, the required input signls re not present, the urner control interrupts the strtup sequence t the points mrked y symols nd initites lockout where required y sfety regultions. The symols used in this Dt Sheet correspond to those on the urner control s lockout indictor. - Burner control must e reset - Sequence switch must e in its strt position voltge t terminls 4 nd 11 present - ir dmper closed - End switch «z» for the «CLOSED» position must feed voltge from terminl 11 to terminl 8 - The contcts of control thermostt or pressurestt «W» nd other contcts of switching devices connected etween terminl 12 nd «LP» must e closed e.g. control contct for the oil preheter s temperture - Terminl 4 must e live - The.C. contct of the ir pressure switch must e closed «LP» test 9/18
Strtup sequence t1 Strt commnd delivered y closes the strt control loop etween terminls 4 nd 5 - The sequence switch strts running - Only prepurging, power is immeditely fed to the fn motor connected to terminl 6 - Pre- nd postpurging; on completion of «t7», power is fed to the fn motor or flue gs fn connected to terminl 7 - On completion of «t16», the control commnd to open the ir dmper is delivered vi terminl 9 - o power is fed to terminl 8 during the positioning time - The sequence switch continues its trvel only fter the ir dmper hs fully opened Prepurge time with ir dmper fully open - During «t1», the correct functioning of the flme supervision circuit is tested - If test is not successful, the urner control will initite lockout Shortly fter the strt of «t1», the ir pressure switch must chnge over from terminl 13 to terminl 14. Otherwise lockout Strt of ir pressure check t the sme time, terminl 14 must e live since the ignition trnsformer will e powered nd the fuel relesed vi this current pth. On completion of the prepurge time, the urner control will drive the ir dmper to the low-fire position vi terminl 10, which is determined y the chngeover point of uxiliry switch «m». During the positioning time, the sequence switch stops gin. short time lter, the motor of the sequence switch will e switched to the control section of the urner control. This mens tht, from now on, positioning signls delivered to terminl 8 hve no impct on the urner s further strtup sequence (nd on susequent urner opertion): Intervl - On completion of, power is fed to terminl 20; t the sme time, control outputs 9...11 nd input 8 re glvniclly seprted from the unit s control section The LFL1... is now protected ginst return voltges from the power control loop - The strtup sequence of the LFL1 ends with the relese of t terminl 20 - fter numer of idle steps (steps with no chnge of the contct position), the sequence switch switches itself off Expnding flme urners TS t3 t4 Ignition sfety time On completion of «TS», flme signl must e present t terminl 22. It must not e interrupted until controlled shutdown tkes plce otherwise lockout Preignition time elese of fuel vi terminl 18 Intervl or «-» - On completion of «t4», terminl 19 is live - Tht powers connected to the ctutor s uxiliry switch «v» 10/18
Strtup sequence (cont d) Interrupted pilot urners t3 t3 TS TS t4 t4 t9 B B-C C C-D t6 t13 D- Preignition time elese of fuel for pilot urner vi terminl 17 Ignition sfety time On completion of «TS», flme signl must e present t terminl 22. It must not e interrupted until controlled shutdown tkes plce otherwise non-voltile lockout Intervl «BV-» Up to the relese of the fuel vlve t terminl 19 for the min urner s strt lod Second sfety time On completion of the second sfety time, the min urner must hve een ignited y the pilot urner since terminl 17 ecomes ded s soon s this time hs elpsed, cusing the pilot vlve to close Operting position of the urner Burner opertion - During urner opertion, drives the ir dmper to the high-fire or low-fire position, depending on the demnd for het - elese of high-fire is enled y uxiliry switch «v» in the ctutor - In the event of loss of flme during opertion, the LFL1 will initite lockout Controlled shutdown On controlled shutdown, the «BV...» will immeditely e closed. t the sme time, the sequence switch strts nd progrms «t6» The sequence switch trvels to strt position, postpurging When urner off time strts, control terminls 11 nd 12 crry voltge to drive the ir dmper to the fully CLOSED position. Flme signl supervision lso remins ctive during urner off times Postpurge time - Fn «2» connected to terminl 7 - Shortly fter the strt of «t6», power is fed to terminl 10 ir dmper will e driven to the I position - Full closing of the ir dmper strts only shortly efore «t6» hs elpsed triggered y the control signl t terminl 11 - During the following urner off period, terminl 11 remins live Permissile fterurn time During «t13», the flme signl input cn still receive flme signl no lockout End of control sequence strt position s soon s the sequence switch hs reched the strt position therey switching itself off the flme detector nd extrneous light test will strt gin. During urner off periods, the flme supervision circuit is live. fulty flme signl of few seconds will initite lockout. Short ignition pulses of the UV tue, cused for instnce y cosmic rdition, do not led to lockout. Times «TS», «t3» nd «t4» only exist with urner controls of the 01 series. 11/18
Control sequence under fult conditions nd lockout indiction In the event of ny kind of fult, the sequence switch will stop nd, with it, the lockout indictor. The symol ove the indictor s reding mrk gives the type of fult: o strt One of the contcts is not closed (lso refer to «Preconditions for urner strtup») Extrneous light Lockout during or fter completion of the control sequence. Exmples: Flmes tht hve not extinguished Leking fuel vlves Defect in the flme supervision circuit = Interruption of Terminl 8 hs not received the OPE signl from end switch strtup sequence Terminls 6, 7 nd 14 remin live until the fult hs een corrected P Lockout o indiction of ir pressure t the eginning of the ir pressure check Loss of ir pressure fter the ir pressure check Lockout Defect in the flme supervision circuit > Interruption of strtup sequence Terminl 8 hs not received the positioning signl from uxiliry switch «m» for the low-fire position Terminls 6, 7 nd 14 remin live until the fult hs een corrected 1 Lockout o flme signl on completion of sfety time «TS» 2 Lockout o flme signl on completion of the second sfety time (flme signl of min flme with interrupted pilot urners) I Lockout Loss of flme signl during opertion If lockout occurs ny other moment in time etween strt nd preignition not indicted y symol, the usul cuse is premture flme signl, tht is, fulty flme signl, cused for instnce y self-igniting UV tue. Lockout indictor - - Strtup sequence Idle steps (with no contct confirmtion) ( )- Postpurge progrm LFL1... 01 series LFL1... 02 series If lockout occurs, the urner control cn immeditely e reset: Do not press the lockout reset utton for more thn 10 seconds The sequence switch lwys returns to its strt position first fter resetting fter correction of fult which resulted in plnt shutdown fter ech power filure During tht period of time, power is only fed to terminls 7 nd 9...11. Then, the LFL1... egins with new urner strtup sequence 12/18
Connection digrms (for circuit vrints, refer to «Connection exmples») t10 P t7 z m t16 t11 t1 B t3 TS t4 t9 t3 TS t4 t12 1 2 S 1 C D 2 21 3 13 12 14 4 5 t6 6 7 16 17 18 19 20 9 t13 11 10 8 22 23 24 SB H Si L 1 2 EK2 (1)/(3) L v... LP W GP 1 d1 2 d2 BV 3 4 5 745102e/0604 6 7 Connection digrm (for circuit vrints, refer to «Connection exmples») L Si H SB 1 S v BV3 z m TS, t3, t4, only: LFL1.335, LFL1.635 nd LFL1.638 + Q... 22 23 24 IO S IO r1 r1 I XV W 4 12 r2 6 7 Q... 22 23 24 + GP LP 1 d1 2 d2 22 23 24 XI 5 13 14 fr1 XIII XII fr3 TC fr2 F V (1) (2) XIV IV VII EK1 L1 r2 E B II X VIII VI V III r3 S 3 21 2 15 16 17 18 19 20 9 11 10 8 L (1)/(3) S v z m H EK2 BV 745112/0204 Do not press lockout reset utton «EK...» for more thn 10 seconds! For the connection of the sfety shutoff vlve, refer to the plnt digrm provided y the urner mnufcturer. 13/18
Progrm sequence B C D Control output t terminl: I II III IV t7 t11 t1 t12 t3 t4 t6 12 19 10 7 16 9 V VI t16 9 20 11 VII VIII X XI XII XIII XIV t10 TS *t3 *t4 t9 *TS t20 t13 18 17 8 XV 12 7 t8 Positions of lockout indictor 7451d01/0604 LFL P 1 2 «TS», «t3» nd «t4»: These times only pply to urner controls of the 01 series (LFL1.335, LFL1.635, nd LFL1.638). They do not pply to urner controls of the 02 series since cms X nd VIII of these types of LFL1 perform simultneous switching ctions. 14/18
Legend Chngeover end switch for ir dmper s m Chngeover uxiliry switch for the ir OPE position dmper s I position L emote lockout wrning device (lrm)... Fn or urner motor Lod rely with contcts «r...» TC TC resistor S Unit fuse Q... UV detector B Lockout rely with contcts «r...» Control thermostt or pressurestt BV... Fuel vlve V odulting fuel vlve v... Control contct for the CLOSED position Si Externl fuse of gs vlves S ir dmper ctutor d... Contctor or rely SB Sfety limiter EK... Lockout reset utton S Synchronous motor of sequence switch F Flme rely with contcts «fr...» v In the ctutor: Chngeover uxiliry switch GP Gs pressure switch For the position-dependent relese of fuel H in isoltor V Flme signl mplifier IO Ioniztion proe W Limit thermostt or pressure switch L1 Fult signl lmp z In the ctutor: End switch for the ir dmper s L3 Opertionl rediness indiction CLOSED position ir dmper Ignition trnsformer LP ir pressure switch BV Pilot gs vlve Lod controller Control signls of the LFL1... Permissile input signls equired input signls: If these signls re not present during or, the urner control will interrupt the strtup sequence or initite lockout TS Ignition sfety time t8 Durtion of strtup sequence TS Ignition sfety time or first sfety time (without «t11» nd «t12») (strtup with urners using pilot urners) t9 Second sfety time with urners using pilot urners t1 Prepurge time with ir dmper open t10 Intervl from strt to the eginning of the t3 Preignition time ir pressure check, excluding running time of ir t4 Intervl etween voltge t terminls 18 dmper nd 19 t11 ir dmper running time to the OPE position t4 Intervl etween strt of TS nd t12 ir dmper running time to the low-fire position relese of vlve t terminl 19 I Intervl etween power t terminls 19 t13 Permissile fterurn time nd 20 t16 Intervl until OPE commnd for the ir dmper is t6 Postpurge time (with «2») given t7 Intervl etween strt commnd nd power t20 Intervl to the self-shutdown of the sequence t terminl 7 (strt dely for «2») switch fter strtup Vlid for expnding flme urners Vlid for interrupted pilot urners (1) Input for incresing the operting voltge for the Q... (detector test) (2) Input for forced energizing of the flme rely during the functionl test of the flme supervision circuit (contct XIV) nd during sfety time «TS» (contct IV) 15/18
Connection exmples Douling the sfety time with expnding flme urners 16 17 18 19 Only with urner controls of the 01 series. 745110/1295 This circuit chnge (linking terminls 17 nd 18) reduces the preignition time y 50 %. Extension of the sfety time is only permitted if in complince with the relevnt ntionl stndrds. Burner without ir dmper 6 11 10 8 745111/0396 If the cse of urners with no ir dmper (or with n ir dmper not controlled nd monitored y the urner control), terminls 8 nd 6 must e linked, s otherwise the urner control will not e le to strt the urner. 2-stge expnding flme urner Lod control y 2-position controller. The ir dmper is closed during urner off periods. L... S / 16 17 18 19 9 20 11 10 8 11 7 1 6 5 2 10 8 S IV I II III 13 12 3 4 9 745103/0396 T P ~ 1 2 100% min. 0... FS B C D t7 t1 t6 t3 TS t4 t11 t12 t13 745106/0600 Control of ctutor «S» ccording to the single-wire principle (ctutor «S»: E.g. SQ3... ccording to Dt Sheet 7808). For other connections, refer to «Connection digrms». 16/18
Connection exmples (cont d) odulting expnding flme urner L... Lod control y modulting controller with glvniclly seprted control contcts for the positioning directions OPE or CLOSE. S V 16 17 18 19 20 9 11 10 8 V S z m 745104/1295 T P ~ 1 2 100% min. 0... V FS t7 t11 B t1 t3 TS t4 t12 745107/0600 C D t6 t13 The ir dmper is kept closed during urner off periods. For other connections, refer to «Connection digrms». 2-stge interrupted pilot urner (urner with pilot urner) L... Controlled nd supervised y urner control of the 01 series. S / BV 16 17 18 19 20 9 11 10 8 BV S v z m 745105/0496 T P ~ 1 2 BV 100% min. 0... FS B C D t7 t1 t11 t3 t12 TS t4 t9 745108/0202 t6 t13 The ir dmper is kept closed during urner off periods. For other connections, refer to «Connection digrms». 17/18
Dimensions Dimensions in mm LFL1... 108,5 1,5 27,5 27,5 7,5 103 37 123 Plug-in se G410490550 / G14.1 7451m04/0305 103 18/18 2005 Siemens Production GmH Suject to chnge!