LOK16... LGK16... Burner Controls. Siemens Building Technologies HVAC Products

Transcription

1 7 785 Burner Controls LOK6... LGK6... Burner controls with self-checking flme signl mplifier, for continuously operting multistge or modulting oil or gs urners of medium to high cpcity; with ir pressure supervision for checked ir dmper control. The LOK6... / LGK6... nd this Dt Sheet re intended for use y OEs which integrte the urner controls in their products. Use Burner controls type LOK6... / LGK6... feture self-checking flme supervision circuit. The supervision circuit initites the required sfety ctions not only in the cse of premture or missing flme signls, ut lso in the event of ny kind of fult on the flme detector, the detector cles or the flme signl mplifier tht could simulte flme signl during urner opertion HVAC roducts

2 The urner controls re therefore suited for use in ll types of oil- or gs-fired comustion plnts where self-checking flme supervision systems re either mndtory or recommended: - Burners tht operte continuously - Burners in intermittent opertion tht, in the cse of gret het demnd, my operte continuously for more thn 4 hours, e.g. in plnts using oiler sequencing - Burners tht need to comply with the Germn TRD 4 nd TRD 4 regultions for stem oilers - Burners in plnts where, for specific sfety requirements, supervision of the urner y self-checking flme supervision system seems dvisle - The control sequence nd the connection circuitry of the LOK6 / LGK6 urner controls re identicl to those of the LAL... nd LFL... respectively (with the exception of type LFL.48), so tht existing comustion plnts cn lso e equipped with self-checking urner controls, provided very good flme detector current vlues re mesured in the plnt supervised so fr y the LFL..., nd provided the following types of flme detectors re either instlled or cn susequently e fitted: Specific fetures when using LOK6... Specific fetures when using LGK Selenium photocell detector RAR... - Flme detector QRA53... / QRA Ioniztion proe - Flme detector QRA53... / QRA55... together with ioniztion proe, e.g. in the cse of urners with pilot urner (lso refer to Dt Sheet 77) 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! All ctivities (mounting, instlltion nd service work, etc.) must e performed y qulified stff Before performing ny wiring chnges in the connection re of the LOK6 / LGK6, completely isolte the urner control from the mins supply (ll-polr disconnection) Ensure protection ginst electric shock hzrd y providing dequte protection for the urner control s terminls Check to ensure tht wiring is in n orderly stte 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 reset utton (input ) for more thn 0 seconds, since this would dmge the lockout rely inside the unit /0

3 ounting notes Ensure tht the relevnt ntionl sfety regultions re complied with Upgrding existing plnt When chnging plnts to LOK6... or LGK6..., the existing LAL... or LFL... se must e secured y cylinder-shped grooved pin, thus ensuring tht only n LOK6... or LGK6... type urner control cn e fitted. rt numer of grooved pin: Loction of grooved pin: Between terminls 0 nd of the LAL... se, nd etween terminls 4 nd 5 of the LFL... se. Strt repetition in the event of loss of flme By removing link «B» on the underside of the unit, the LOK6... cn e switched to strt repetition in the event of loss of flme during opertion. In tht cse, the wire link must e cut off completely. But it must e checked whether this is in complince with ntionl stndrds nd regultions. Instlltion notes Alwys run the high-voltge ignition cles seprtely while oserving the gretest possile distnce to the unit nd to other cles eutrl conductors my not e interchnged Electricl connection of ioniztion proe nd flme detector 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 permissile detector cle lengths (refer to «Technicl dt») It is not permitted to connect flme detectors QRA53... / QRA55... in prllel When using the QRA53... / QRA55..., erthing of terminl 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 ioniztion proe nd flme detector QRA... is possile ut, for sfety resons, oth my not e ctive t the sme time, with the exception of the second sfety time «t9». At the end of the second sfety time, one of the detected flmes must extinguish, e.g. y shutting down the pilot gs vlve connected to terminl 7 3/0

4 Commissioning notes When commissioning the plnt or when doing mintennce work, mke the following sfety checks: Sfety check ) Burner strtup with flme detector drkened ) Burner strtup with simulted flme c) Burner opertion with simulted loss of flme; for tht purpose, drken the flme detector in opertion nd leve it in tht stte d) Burner strtup with response of ir pressure switch e) Burner opertion with simulted ir pressure filure Anticipted response Lockout t the end of «TSA» Lockout fter 40 seconds t the ltest - LOK6... with wire link cut: Strt repetition followed y lockout t the end of «TSA» - LGK6... nd LOK6... with wire link closed: Immedite lockout revention of strtup / lockout during «t» Immedite lockout Stndrds nd certifictes Conformity to EEC directives - Electromgnetic comptiility EC (immunity) - Directive for gs pplinces - Low-voltge directive 89 / 336 EEC 90 / 396 EEC 73 / 3 EEC ISO 900: 000 Cert ISO 400: 996 Cert Identifiction code to E 98 F B / L L X K Type LOK6.40A7* x x x x LOK6.50A7* x x x x LOK6.650A7* x x x x LGK6.A7* x x x LGK6.33A7 x x x LGK6.3A7* x x x LGK6.333A7* x x x LGK6.335A7* x x x LGK6.6A7* x x x LGK6.635A7* x x 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» The KF883 flme detector current mesuring instrument my not e used in continuous opertion 4/0

5 Disposl notes The unit contins electricl nd electronic components nd my not e disposed of together with household wste. Locl nd currently vlid legisltion must e oserved. echnicl design The urner controls re of plug-in design. Housing nd plug-in se re mde of shock- nd het-resistnt lck plstic. The lockout indictor, fult signl lmp nd lockout reset utton re locted in the unit s viewing window. The urner control hs n exchngele unit fuse nd spre fuse. 5/0

6 Type summry The switching times re given in seconds, in the order of the strtup sequence, vlid for frequency of 50 Hz. At 60 Hz, the times re out 0 % shorter. The type references pply to urner controls operting on AC 30 V, Hz. * For urner controls operting on AC V, Hz, the lst digits of the type reference red «7» in plce of «7». LOK6... For flme supervision with selenium photocell detector RAR7... or RAR8... for oil urners referred use: 6/0 Flsh-stem genertors Universl ppliction edium- or hevyoil urners LOK6.40A7* LOK6.50A7* LOK6.650A7* Times t repurge time with ir dmper fully open TSA Sfety time or first sfety time with urners using pilot urner TSA Sfety time or first sfety time with urners using pilot urner t3.5.5 reignition time t3 From strtup commnd (with ir pressure supervision: From receipt of ir pressure signl) Long preignition time t3n ostignition time (ignition trnsformer connected to terminl 5) t Intervl etween strt of «TSA» or «TSA» nd relese of vlve t terminl 9 t Intervl etween strt of «TSA» or «TSA» nd relese of vlve t terminl 9 t Intervl etween end of «t4» or «t4» nd relese of lod controller or vlve t terminl 0 t ostpurge time (identicl to permissile fterurn time «t3») t7.5.5 Switch-on dely of fn motor t Durtion of strtup without «t» nd «t» t Second sfety time with urners using pilot urner t Intervl from strtup to the eginning of the ir pressure check t Optionl Air dmper running time to the fully open position t Optionl Air dmper running time to the low-fire position t3 ermissile fterurn time t Intervl from strtup to the open commnd for the ir dmper t Intervl to self-shutdown of the sequence switch LGK6... For flme supervision with flme detector QRA53... / QRA55... or ioniztion proe referred use: Flsh-stem genertors Flsh-stem genertors D (lso suited for direct-fired ir heters), F D, A GB F, I B, L LGK6.A7* LGK6.33A7 LGK6.3A7* LGK6.333A7* LGK6.335A7* LGK6.6A7* LGK6.635A7* t TSA TSA t t t3n t t t t t t t t t Optionl t Optionl t t

7 Ordering Oil urners Gs, oil nd dul-fuel urners (depending on type of flme detector used) Burner control without plugin Control sequence nd con- referred use se AC 30 V* nection digrm like LOK6.40A7* LAL.4 Flsh-stem genertors LOK6.50A7* LAL.5 Universl use LOK6.650A7* LAL.65 Hevy-oil urners LGK6.A7* LFL. Flsh-stem genertors LGK6.33A7 LFL.33 Flsh-stem genertors LGK6.3A7* LFL.3 D (lso suited for direct-fired ir heters), F LGK6.333A7* LFL.333 D, A LGK6.335A7* LFL.335 GB LGK6.6A7* LFL.6 I, F LGK6.635A7* LFL.635 B, L lug-in se AG6...: Coding of the plug-in se only llows the use of LOK6... lug-in se AG7...: Coding of the plug-in se only llows the use of LGK6... Flme detectors RAR7... or RAR8...: Selenium photocell detector (refer to Dt Sheet 773) Flme detectors QRA / QRA55...: Self-checking flme detector (refer to Dt Sheet 77) Ioniztion proe Accessories for flme detectors Supplied y the urner mnufcturer Refer to Dt Sheet 77 * For urner controls operting on AC V, Hz, the lst digits of the type reference red «7» in plce of «7» 7/0

8 Technicl dt Generl unit dt LOK6... / LGK6... Environmentl conditions ins voltge AC 0 V -5 %...AC 40 V +0 % AC 00 V -5 %...AC 0 V +0 % ins frequency Hz ±6 % ower consumption 3.5 VA rimry fuse (externl) mx. 6 A (slow) Unit fuse T6,3H50V to IEC 60 7 erm. input current t terminl 5 A to VDE 0660 AC3 erm. Current lod of control terminls 4 A to VDE 0660 AC3 Required switching cpcity of switching devices - Between terminls 4 nd 5, 4 nd - Between terminls 4 nd 4 ounting position Degree of protection Weight - Burner control - lug-in se A, AC 50 V depending on loding of terminls 5, 6, 8, 9 (LGK6...: 6...9), min. A, AC 50 V optionl I 40, (to e ensured through mounting) pprox. 000 g pprox. 65 g Trnsport DI E Climtic conditions clss K echnicl conditions clss Temperture rnge C Humidity < 95 % r.h. Opertion DI E Climtic conditions clss 3K5 echnicl conditions clss 3 Temperture rnge C Humidity < 95 % r.h. Condenstion, formtion of ice nd ingress of wter re not permitted! Flme supervision Operting voltge (Terminl 3 or 4) inimum detector current required ximum possile detector current RAR... (LOK6...) < DC V ±0 % QRA5x.C... (LGK6...) AC 80 V ¹) ±0 % QRA5x.D... (LGK6...) AC 80 V ¹) ±0 % IOIS: (LGK6...) AC 45 V ¹) ±0 % DC 6 µa DC 35 µa ²) DC 0 µa ²) DC µa DC 5 µa DC 70 µa ²) DC 70 µa ²) DC 00 µa Short-circuit current pprox. AC 300 µa ximum length of detector cle (lid seprtely) 00 m ³) ³) 60 m 4 ) ) AC voltge, mesured with no detector current t AC 30 V mins voltge. Internl resistnce of mesuring instrument 0 Ω. The shutter of the flme detector QRA53... / QRA55... is powered y mins voltge ) Also refer to the specifiction given on the KF883 for mesuring the detector current 3) Detector cle lid in minimum distnce of 5 cm from other mins crrying cle: - As multiple cle mx. 50 m - With 5 single wires mx. 70 m With shielding 3-core control cle to terminls 3, 4 nd 5 of the flme detector mx. 5 m QRA53... / QRA55... nd stndrd mins cle to terminls nd With shielding single-core coxil cles ( 45 pf / m, e.g. RG 6) to terminls 3 mx. 60 m nd 4 of the flme detector QRA53... / QRA55... nd stndrd mins cle to terminls, nd 5 If possile, shielding should e erthed t oth ends 4) Longer cle distnces re permitted when connecting low cpcitnce detector cles to terminl 4 of the urner control (especilly ginst erthed wires!) 8/0

9 Function rinciple of selfsupervision rerequisites for urner strtup In contrst to conventionl mplifiers, the signl delivered y the flme detector is hndled dynmiclly nd not stticlly. The flme detector signl is converted to sequence of control pulses nd then fed to the flme rely circuit. The ltter is designed such tht the flme rely cn only e energized y flme signl of the descried form. If the pulses chnge due to fulty detector or fulty detector cles, the rely will e deenergized nd the urner control triggers the required sfety ctions. In the cse of UV supervision, it must lso e ensured tht self-ignition of the UV tue (e.g. due to ging) does not simulte flme signl. For tht reson, incident rdition t the UV cell is periodiclly interrupted y shutter. In ddition to the self-checking fcility, the flme signl circuit is sujected to functionl test during the prepurge time. If it does not operte correctly, the strtup sequence will e orted or lockout initited. Furthermore, if mins voltge drops to level where sfe opertion of the urner control is no longer ensured, the urner will utomticlly shut down. When mins voltge returns to the norml level, the urner control repets the strtup sequence. If the detector signls re only slightly ove the minimum levels, such mins voltge fluctutions cn lso give rise to urner lockout however. - The urner control is reset nd in the strt position (terminls nd must receive power) - The ir dmper is closed. End switch «z» for the fully closed position must feed power from terminl to terminl 8 - All control contcts etween terminls nd 5 (limit thermostt, control thermostt, etc.) must e closed A Strt When «R» closes, the urner control s sequence switch strts running. At the sme time, the fn motor connected to terminl 6 (only prepurging) receives power nd, on completion of «t7», the fn motor or flue gs fn t terminl 7 (pre- nd postpurging) lso receives power. On completion of «t6», the control commnd to open the ir dmper is given vi terminl 9. During the running time of the motor, the sequence switch does not operte, s terminl 8, vi which the motor of the sequence switch first receives power, is not live during tht period of time. The sequence switch strts gin nd progrms only fter the ir dmper is fully open nd end switch hs chnged over to feed power to terminl 8. t repurge time with ir dmper fully open (nominl mount of comustion ir) Shortly fter the strt of the prepurge time, ir pressure switch «L» must chnge over, thus interrupting the current pth etween terminls 4 nd 3. Otherwise, the urner control would go to lockout (strt of ir pressure check). At the sme time, terminl 4 must e live since this current pth is used to power the ignition trnsformer nd the fuel vlves. t3 With the LOK6, n ignition trnsformer connected to terminl 5 is therefore switched on t this point in time (long preignition). If there is no «L», the ignition trnsformer receives power lredy with the strt commnd. On completion of the prepurge time, the urner control vi terminl 0 runs the ir dmper into the lowfire position, which is determined y the chngeover point of uxiliry switch «m». During the positioning time, the sequence switch stops gin until terminl 8 receives power from «m». t5 Intervl On completion of «t5», terminl 0 receives power. At the sme time, control outputs 9 to nd input 8 re glvniclly seprted from the unit s control section, so tht the ltter is protected ginst reverse voltges from the lod control circuit. The strtup sequence of the urner control ends with the relese of lod controller «LR» t terminl 0. The sequence switch switches itself utomticlly off, depending on the time vrint used, either immeditely or fter some so-clled «idle steps», tht is, without chnging the contct positions. 9/0

10 Expnding flme urners with LOK6... or LGK6... t3 Short preignition time; followed y fuel relese vi terminl 8. TSA Sfety time (prt lod) On completion of the sfety time ltest, flme signl must e present t the input of the flme signl mplifier, or else the urner control will initite lockout. Only with LOK6...: t3n ostignition time (provided the ignition trnsformer is connected to terminl 5). t4 Intervl until the fuel vlve is relesed vi terminl 9. Interrupted pilot urner with LGK6... t3 / t3 (Burners using pilot urner) Short preignition time; followed y relese of fuel for the pilot urner vi terminl 7. TSA / TSA t4 / t4 First sfety time (ignition lod) On completion of the sfety time ltest, flme signl must e present t the input of the flme signl mplifier, or else the urner control will initite lockout. Intervl until the fuel vlve t terminl 9 is relesed (strt lod of the min urner). Times «TSA», «t3» nd «t4» re only progrmmed y urner controls type LGK nd LGK t9 Second sfety time On completion of the sfety time, the min urner must hve een ignited y the pilot urner, since the pilot gs vlve is closed on completion of «t9». B Operting position of the urner B-C Burner opertion (genertion of het) During urner opertion, the lod controller drives the ir dmper to the nominl lod or low-fire position, depending on het demnd. Here, the nominl lod is relesed y uxiliry switch «v» in the ir dmper ctutor. C Controlled shutdown y «R» In the cse of controlled shutdown, the fuel vlves re immeditely closed nd, t the sme time, the sequence switch strts gin to progrm the postpurge time. t6 ostpurge time (postpurging with fn connected to terminl 7). Shortly fter the strt of the postpurge time, voltge t terminl 0 is reinstted, so tht the ir dmper is driven into the «I» position. The full closing of the ir dmper strts only shortly efore the completion of the postpurge time initited y the control signl on terminl, which lso remins live during the following urner off period. D-A End of control sequence (= strt position) When, on completion of «t6», the sequence switch hs reset the control contcts to their strt positions, therey switching itself off, the detector nd flme simultion test is strted gin. However, during the urner off period, lockout cn occur only if the fulty flme signl lsts few seconds. Hence, short ignition pulses of the UV detector cused y cosmic rdition do not initite lockout. 0/0

11 Control sequence in the event of fult In cse of ny disturnce, the supply of fuel is immeditely interrupted. At the sme time, the sequence switch stops nd thus the lockout indictor lso. The symol ppering ove the reding mrk indictes the kind of fult: o strt, ecuse one of the contcts is not closed (lso refer to «rerequisites for urner strtup») or lockout during or fter completion of the control sequence due to extrneous light (e.g. flme not extinguished, leking fuel vlves, fulty flme supervision circuit, or similr). Aortion of strtup sequence, ecuse end switch hs not fed the OE signl to terminl 8. Terminls 6, 7 nd 4 nd, in cse LOK6... is used, terminl 5, lso remin live until the fult is corrected. Lockout, ecuse the ir pressure signl hs not een received t the strt of the ir pressure check. Lockout due to fult in the flme supervision circuit. Aortion of strtup sequence, ecuse uxiliry switch «m» hs not delivered the positioning signl for the low-fire position to terminl 8. Terminls 6, 7 nd 4 nd, in cse LOK6... is used, terminl 5, lso remin live until the fult is corrected. Lockout, ecuse no flme signl hs een received on completion of the (first) sfety time. Only with LGK6...: Lockout, ecuse no flme signl hs een received on completion of the second sfety time (flme signl of the min flme with interrupted pilot urners). I Lockout, ecuse the flme signl hs een lost during urner opertion or ir pressure filure hs occurred. Only with LOK6...: If wire link «B» ws cut off nd the flme is lost during urner opertion, the urner control progrms repetition of the strtup sequence with the full progrm. /0

12 Lockout indiction LOK LOK LOK LGK6... LGK LGK LGK LGK p0/096 LGK LGK ( )- Strtup sequence With some time vrints: «Idle steps» of the sequence switch up to the self-shutdown fter urner strtup ( = operting position of the sequence switch) ostpurge sequence fter controlled shutdown. In strt position, the sequence switch switches itself utomticlly off or immeditely initites nother urner strtup (e.g. fter fult hs een corrected) Durtion of sfety time with expnding flme urners Durtion of sfety times with interrupted pilot urners When lockout hs occurred, the urner control cn immeditely e reset. After resetting, nd lso fter correction of fult which resulted in shutdown, or fter mins filure, the sequence switch lwys runs to its strt position, wherey only terminls 7, 9, 0 nd receive power in ccordnce with the control sequence. It is only then tht the urner control progrms urner restrt. ote: Do not press the lockout reset utton for more thn 0 seconds. /0

13 Assignment of terminls LOK6... A z m SB AS (3) 3 AL t0 B C D A 3 4 W t6 t t3n t3 t3 TSA t4 t5 t t t t LR t B + RAR7... H EK ) L R SA v z m F L Z BV BV LK 77850/0 LGK6... A z m Bt0 t7 t3 TSA t9 t4 t3 TSA t4 t5 t6 t t t5 t C D A AS SB v... W G R (3) t LR d d 5 34 SA v z m + t3 H L F EK ) AL L Z ZBV BV BV BV 77850e/003 BV3 LK BV TSA, t3, t4, only with: LGK6.335 nd LGK6.635 QRA5... ) 4 IO ) Do not press EK for more thn 0 seconds Legend Chngeover end switch for ir dmper s L Air pressure switch fully open position LR Lod controller AL Remote lockout wrning device (lrm) m Auxiliry chngeover switch for the ir AR in rely (lod rely) with «r» contcts dmper s I position AS Unit fuse... Fn or urner motor B Wire link (on the urner control s se) TC Resistor with negtive temperture coefficient BR Lockout rely with «r» contcts QRA... UV detector BV... Fuel vlve R Control thermostt or pressurestt v... Auxiliry contct in the vlve ctutor for the RAR... Selenium photocell detector fully closed position check SA Air dmper ctutor d... Contctor or rely SB Sfety limit thermostt EK... Lockout reset utton S Synchronous motor of sequence switch F Externl sfety switch v In the ir dmper ctutor: Auxiliry chngeover IO Ioniztion proe switch for relese of fuel s function of the ir FR Flme rely with «fr» contcts dmper position FS Flme signl V Flme signl mplifier G Gs pressure switch W Limit thermostt or pressure switch H ins isoltor z In the ir dmper ctutor: End switch for L... Lockout wrning lmp the ir dmper s fully closed position LK Air dmper Z Ignition trnsformer ZBV ilot vlve 3/0

14 A Strtup C Controlled shutdown B Operting position D End of control sequence Control signls delivered y the urner control ermissile input signls Required input signls: If these signls re not present t the points in time mrked y symols or during the shded periods of time, the urner control will interrupt the strtup sequence or initite lockout Vlid for expnding flme urners Vlid for urners with pilot urner which is shut down fter the min urner hs ignited ) When used with QRA53... / QRA55..., erthing of terminl is mndtory ) Do not press EK for more thn 0 seconds Lockout indiction positions when there is no input signl (refer to «Control sequence in the event of fults»): o strt Aortion of strtup sequence Aortion of strtup sequence Lockout (fult in the flme supervision circuit) Lockout (no flme) Lockout (no flme) Lockout (no ir pressure) Time tle t repurge time with ir dmper fully open t7 Switch-on dely for fn motor TSA Sfety time or first sfety time with urners using t8 Durtion of strtup sequence excluding «t» pilot urner nd «t» TSA Sfety time or first sfety time with urners using t9 Second sfety time with urners using pilot pilot urner urner t3 reignition time t0 Intervl from the strt to the eginning of the t3 reignition time ir pressure check t3n ost-ignition time (ignition trnsformer t Running time of ir dmper into the fully open connected to terminl 5) position t4 Intervl from the strt of «TSA» or «TSA» to the t Running time of ir dmper into the low-fire vlve connected to terminl 9 position t4 Intervl from the strt of «TSA» or «TSA» to the t3 ermissile fterurn time relese of the vlve connected to terminl 9 t6 Intervl from the strt to the OE t5 Intervl from the end of «t4» or «t4» to the commnd for the ir dmper relese of the lod controller or vlve t t0 Intervl to the self-shutdown of the sequence terminl 0 switch t6 ostpurge time (identicl with the permissile mx. Sfety time in the event of loss of flme fterurn time «t3») during opertion * Times TSA, t3 nd t4 re only progrmmed y urner controls LGK nd LGK /0

15 Connection digrms LGK6... ) EK L H SB AS r r I XV 4 W G R L fr IV XIII XII AR L r II E A BR 3 6 AL (3) d/d 6 r d ) H EK ZBV BV Z X TC VIII 7 d BV fr VI V IO LR SA v z m BV BV fr3 III LK V VII r3 XIV S QRA /0903 ) Do not press EK for more thn 0 seconds I II III IV V VI VII VIII X t7 A t6 t t t t3 t4 TSA *t3 *t4 *TSA t5 t9 B C D t6 t0 Control output t terminl: XII XIII XIV t0 t3 XV 7 t8 7785d03e/00 Lockout indiction position * Times TSA, t3 nd t4 re only progrmmed y urner controls LGK nd LGK /0

16 LOK6... AS r r **I r + RAR SB ) EK L B W R 4 L fr IX XII XI XIII IV AR r E A BR 6 7 II TC X fr V VI V FR fr3 III XIV VII r3 VIII S 3 (3) LR L H AL EK ) SA Z BV BV v z m /00 LK ) Do not press EK for more thn 0 seconds I t7 II III IV V VI VII VIII IX X XI XII XIII XIV A t6 t t0 t t3 t t3 TSA t4 t3n t5 B C D t6 t0 t3 Control output t terminl: t8 7785d04e/00 Lockout indiction position 6/0

17 Connection exmples LGK BV Douling of sfety time with expnding flme urners when using urner control LGK or LGK Z BV /95 By connecting terminls 7 nd 8, the sfety time is douled nd the preignition time reduced y 50 %. Before using this circuit, it must e ensured tht the longer sfety time is in complince with ntionl stndrds nd regultions! LOK LR 6 Control of the ir dmper ctutor during opertion y feeding control signls to terminl 7 BV BV LK / Wiring required for opertion without ir pressure supervision d/d R W d If n uxiliry contct of the fn contctor is included in the circuit s shown in the digrm, ignition nd fuel relese re possile only when the contct is closed. 7785/096 LOK6... / LGK AL L I W G L /95 0 Semiutomtic strtup The urner is switched on mnully y pressing utton «I». Then, the urner control progrms the strtup sequence nd flme supervision. The urner is switched off mnully y pressing utton «0», or utomticlly y the limit thermostt or pressure switch «W», or y gs pressure switch «G». «L3» indictes when the urner control is redy to e strted; it extinguishes shortly fter the urner is switched on. For the other connections, refer to the connection digrms. SA BV LR 0 8 v z /096 LK Connection of ir dmper ctutors without chngeover end switch for the fully closed position. «Z» is set to low-fire BV BV /0396 Control of fuel vlve y terminl 0 in the cse of urners without ir dmper or with n ir dmper not controlled y the urner control. The rely is not required if the vlve connected to terminl 0 is hydruliclly series-connected to vlve controlled y terminl 8 or 9. If no ir dmper ctutor is used, terminl 8 must e connected to terminl 6. 7/0

18 Detector current mesurement LOK6... / RAR... LGK6... / QRA53... / QRA55... LGK6... / detector electrode The mesuring instrument must e connected etween the detector nd terminl (+pole to terminl ). Use the KF883 mesuring instrument (not suited for continuous opertion). There is no self-checking while mesurements re mde. The KF883 is not required when using the QRA5x.D... The mesuring instrument must e connected etween terminl 4 nd the detector electrode (+pole to terminl 4). Burner Burner control LGK6... se 5 Terminls in the control pnel ins cle 3 x.5 mm 5 Terminls in the urner comprtment 5 QRA Single-wire coxil cle (e.g. RG6) Screening Cle AG9 mx. 60 m 7785g0e/00 With QRA5x.C... With QRA5x.D µa + A 7785v04/ µa + A 7785v0/ µf/5 V 470 µf/5 V With RAR... With ioniztion 5 µa + A RAR µa + A IO v0/ v03/0903 Legend A RAR... IO Ammeter Selenium photocell detector Ioniztion proe 8/0

19 rogrm sequence Expnding flme urners (urners without pilot urner), controlled nd supervised y LOK6... or LGK6... Air dmper in low-fire position during urner off times (min.). T ~ R R Z BV LR 00% min. LK 0... A B C D t7 t t6 t3 TSA t4 t5 BV t t FS 7785d0/090 Interrupted pilot urners (urners with pilot urner), controlled nd supervised y LGK6.335 or LGK6.635, for exmple. The other types of urner controls of the LGK6... rnge progrm the times «TSA», «t3», «t4» nd «t9» for the pilot urner. T ~ R Z ZBV BV A B C D t7 t t6 t3 TSA t4 t9 R LR 00% min. LK 0... t5 BV t t FS 7785d0/00 9/0

20 Dimensions Dimensions in mm LOK6... / LGK6... with plug-in se AG... 5,5 3, ,9 6 7, ,5 7,5 7785m0/096 7, AG6... or AG7... 5,x6,7 40 8,5 3,5 5,7 5, ,5 8,9 5,7 0 5,5 3, ,5 4,4, , 5,x6,7 7785m0/096 5,7 5,5,8 40 5,5 0/0 003 Suject to chnge