Siemens LGK16 Series Manual Download Page 1

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CC1N7785en
20.11.2017

Building Technologies Division

785

Burner Controls

LOK16...
LGK16...

Burner controls



For gas, oil or dual-fuel forced draft burners of medium to high capacity



For multistage or modulating burners in continuous operation



With air pressure supervision for checked air damper control.



Flame supervision
- LOK16: With silicon detector RAR
- LGK16: With flame detector QRA53/QRA55/ionization probe



Burner control for oil burners or gas burners in accordance with EN 298:2012



Suitable for use with air heaters (WLE)



With self-checking flame signal amplifier

The LOK16.../LGK16... and this Data Sheet are intended for use by OEMs which
integrate the burner controls in their products.

Summary of Contents for LGK16 Series

Page 1: ...th air pressure supervision for checked air damper control Flame supervision LOK16 With silicon detector RAR LGK16 With flame detector QRA53 QRA55 ionization probe Burner control for oil burners or gas burners in accordance with EN 298 2012 Suitable for use with air heaters WLE With self checking flame signal amplifier The LOK16 LGK16 and this Data Sheet are intended for use by OEMs which integrat...

Page 2: ...ncing Burners that need to comply with the German TRD 411 and TRD 412 regulations for steam boilers Burners in plant where for specific safety requirements supervision of the burner by a self checking flame supervision system seems advisable The control sequence and connection circuitry of the LOK16 LGK16 burner controls are identical to those of the LAL2 and LFL1 respectively with the exception o...

Page 3: ...its must not be put into operation even if they do not exhibit any damage In the case of flame supervision with flame detectors QRA53 QRA55 it should be noted that sources of radiation such as halogen lamps welding equipment special lamps ignition sparks as well as X rays and gamma radiation can produce erroneous flame signals Mounting notes Ensure that the relevant national safety regulations are...

Page 4: ...parallel When using the QRA53 QRA55 earthing of terminal 22 is mandatory The ionization probe is not protected against electric shock hazard Locate the ignition electrode and ionization probe such that the ignition spark cannot arc over to the ionization probe risk of electrical overloads and that it cannot adversely affect the supervision of ionization Supervision with ionization probe and QRA53 ...

Page 5: ...s for burners and appliances burning gaseous or liquid fuels DIN EN 298 Only LGK16 Safety and control devices for gas burners and gas burning appliances DIN EN 13611 2007 A2 2011 Automatic electrical controls for household and similar use Part 2 5 Particular requirements for automatic electrical burner control systems DIN EN 60730 2 5 The relevant valid edition of the standards can be found in the...

Page 6: ...lifetime is based on use of the burner controls according to the manufacturer s Data Sheet After reaching the designed lifetime in terms of the number of burner startup cycles or the respective time of usage the burner control is to be replaced by authorized personnel The designed lifetime is not the warranty time specified in the Terms of Delivery Disposal notes The unit contains electrical and e...

Page 7: ... burners using a pilot burner t3 2 s 2 5 s 2 5 s Preignition time t3 From startup command with air pressure supervision from receipt of air pressure signal Long preignition time t3n 10 s 15 s 15 s Postignition time ignition transformer connected to terminal 15 t4 8 s 7 5 s 7 5 s Interval between start of safety time and release of valve at terminal 19 t4 Interval between start of safety time and r...

Page 8: ...rticle no BPZ LGK16 122A27 BPZ LGK16 133A27 BPZ LGK16 322A27 BPZ LGK16 333A27 BPZ LGK16 335A27 BPZ LGK16 622A27 BPZ LGK16 635A27 t1 10 s 9 s 35 5 s 31 5 s 37 s 65 s 66 s TSA 2 s 3 s 2 s 3 s 2 5 s 2 s 2 5 s TSA 2 s 3 s 2 s 3 s 5 s 2 s 5 s t3 4 s 3 s 4 s 6 s 5 s 4 s 5 s t3 4 s 4 s 6 s 2 5 s 4 s 2 5 s t3n t4 6 s 6 s 10 s 11 5 s 12 5 s 10 s 12 5 s t4 6 s 10 s 11 5 s 15 s 10 s 15 s t5 4 s 3 s 10 s 11 5...

Page 9: ...ersal application LOK16 650A27 LAL2 65 Heavy oil burners For burner controls operating on AC 100 110 V 50 60 Hz the last 2 digits of the type reference read 17 in place of 27 Connection accessories for medium capacity burner controls Plug in base AGM16 Article no BPZ AGM16 with Pg11 thread for cable entry glands Plug in base AGM16 1 Article no BPZ AGM16 1 with M16 thread for cable entry glands see...

Page 10: ...heaters LGK16 333A27 LFL1 333 LGK16 335A27 LFL1 335 LGK16 622A27 LFL1 622 LGK16 635A27 LFL1 635 For burner controls operating on AC 100 110 V 50 60 Hz the last 2 digits of the type reference read 17 in place of 27 Connection accessories for medium capacity burner controls Plug in base AGM17 Article no BPZ AGM17 with Pg11 thread for cable entry glands Plug in base AGM17 1 Article no BPZ AGM17 1 wit...

Page 11: ...heet N7808 Actuator SQM40 SQM41 Refer to Data Sheet N7817 Actuator SQM5 Refer to Data Sheet N7815 Others Flame detector current measuring device KF8832 Article no BPZ KF8832 For detector current measurements with QRA53 QRA55 recommended up to series C and E Not suited for continuous operation Only for measurements of short duration Notice The KF8832 negates the self supervision function ...

Page 12: ...rminals 15 16 18 19 LGK16 16 19 min 1 A AC 250 V Permissible length of the standard detector cable laid separately See Technical data section Flame supervision Capacity Output on startup without fan Nominal output Optional with ignition 120 kW Optional Storage DIN EN 60721 3 1 Climatic conditions Class 1K3 Mechanical conditions Class 1M2 Temperature range 20 60 C Humidity 95 r h Transport DIN EN 6...

Page 13: ... and 5 of the flame detector QRA53 QRA55 and standard mains cable to terminals 1 and 2 Max 15 m With 2 shielded single core coaxial cables 45 pF m e g RG 62 to terminals 3 and 4 of the flame detector QRA53 QRA55 and standard mains cable to terminals 1 2 and 5 Max 60 m If possible shielding should be earthed at both ends 3 Longer cable distances are permitted when connecting low capacitance detecto...

Page 14: ...terminal 24 With ionization 24 ION A 7785v03 1008 DC 12 100 µA 1 2 5 3 4 4 3 5 2 1 4 3 5 2 1 1 2 22 23 15 2 7785g01e 0604 Burner control LGK16 base Burner Terminals in the burner compartment QRA5 Terminals in the control panel Mains cable 3 x 1 5 mm Single wire coaxial cable e g RG62 Shielding Max 60 m Cable AGM19 A Ammeter RAR9 Silicon photocell detector ION Ionization probe LGK16 Legend ...

Page 15: ... by a shutter In addition to the self checking facility the flame signal circuit is subjected to a functional test during the prepurge time If it does not operate correctly the startup sequence will be aborted or lockout initiated Furthermore if mains voltage drops to a level where safe operation of the burner control is no longer ensured the burner will automatically shut down When mains voltage ...

Page 16: ...transformer connected to terminal 15 is therefore switched on at this point in time long preignition If there is no air pressure switch the ignition transformer receives power already with the start command On completion of the prepurge time the burner control via terminal 10 drives the air damper into the low fire position which is determined by the changeover point of auxiliary switch m During t...

Page 17: ...eat During burner operation the load controller drives the air damper to the nominal load or low fire position depending on heat demand Here the nominal load is released by auxiliary switch v in the actuator C Controlled shutdown by control thermostat or pressurestat In the case of controlled shutdown the fuel valves are immediately closed and at the same time the sequence switch starts again to p...

Page 18: ...out Due to a fault in the flame supervision circuit Abortion of startup sequence Auxiliary switch m has not delivered the positioning signal for the low fire position to terminal 8 Terminals 6 7 and 14 and in case LOK16 is used terminal 15 also remain live until the fault is corrected 1 Lockout No flame signal has been received on completion of the first safety time 2 Lockout Only with LGK16 No fl...

Page 19: ...ence switch switches itself automatically off or immediately initiates another burner startup e g after a fault has been corrected Duration of safety time with expanding flame burners Duration of safety times with interrupted pilot burners When lockout has occurred the burner control can immediately be reset Do not press the lockout reset button for more than 10 seconds The sequence switch always ...

Page 20: ...t4 t3 TSA t5 t1 t11 a z m 11 10 8 22 B 1 v 7785a01 0908 LK Si LP 14 12 13 t10 SB P t3 t3n 24 m t13 t12 t16 RAR9 M1 M2 BV2 Note In applications involving air heaters WLE or in the case of oil burners with a maximum throughput of 30 kW h removing wire link B is not permitted Caution Do not press lockout reset button EK for more than 10 seconds Connect the safety valve as specified in the diagram pro...

Page 21: ...19 20 9 2 21 3 1312 14 4 5 t11 t12 t5 t1 1 t13 1 3 t3 TSA t4 t5 z m a t16 D A t7 t6 t3 TSA t4 t9 A t10 B C 7785a02e 0604 TSA t3 t4 only LGK16 335 and LGK16 635 5 M QRA5 3 4 1 1 2 1 P 22 24 ION SB GP AS 2 M1 M2 Si 1 When used in connection with QRA53 QRA55 earthing of terminal 22 is mandatory Caution Do not press lockout reset button EK for more than 10 seconds Connect the safety valve as specified...

Page 22: ...fr3 M QRA5 22 23 24 15 SB 1 2 3 4 5 M1 M2 b a Si BV2 BV1 BV3 BV2 1 L 15 Caution Do not press lockout reset button EK for more than 10 seconds 1 When used in connection with QRA53 QRA55 earthing of terminal 22 is mandatory L 1 AS br1 a b ar1 4 W R B 5 fr1 a b IX LP XI XIII AR br2 L1 EK1 b a a b M E 3 21 2 1 3 EK2 AL N 15 16 18 BR 13 14 XII IV a b II X b aa b M1 M2 N 6 7 12 ar2 a b I fr2 b a V 17 19...

Page 23: ...t4 t4 t9 t5 IX XI Lockout indication position Control output at terminal Times safety time TSA long preignition time t3 and interval t4 are only programmed by burner controls LGK16 335 and LGK16 635 A t11 t7 t1 t12 B C D t6 t20 t13 t10 t16 t8 P 20 7 19 8 9 9 10 I II III IV V VI VII VIII X XI XII XIII XIV a b a b a b a b a b a b a b a b a b a b a b 7785d04e 0604 12 16 11 18 17 t3 t4 TSA t5 1 15 t3n...

Page 24: ...00 LR BV1 M1 M2 Z M P R T t12 t4 t5 A B C D t11 t6 t7 t1 t3 TSA 7785d01 0901 Interrupted pilot burners burners with pilot burner controlled and supervised by LGK16 335 or LGK16 635 for example The other types of burner controls of the LGK16 range program the times safety time TSA preignition time t3 interval t4 and second safety time t9 for the pilot burner FS BV2 min LK 0 M R 100 LR BV1 M1 M2 Z M...

Page 25: ...he contact is closed LOK16 LGK16 W 5 0 12 LP 13 14 4 L3 I 3 AL N GP 7785a05 1295 Semiautomatic startup The burner is switched on manually by pressing button I Then the burner control programs the startup sequence and flame supervision The burner is switched off manually by pressing button 0 or automatically by the limit thermostat or pressure switch W or by gas pressure switch GP Signal lamp L3 in...

Page 26: ...urner motor NTC Resistor with negative temperature coefficient QRA UV detector R Control thermostat or pressurestat RAR9 Silicon photocell detector SA Actuator of air damper SB Safety limit thermostat Si External fuse SM Synchronous motor of sequence switch v In the actuator Auxiliary changeover switch for release of fuel as a function of the air damper position V Flame signal amplifier W Limit th...

Page 27: ...erval from the start of safety time TSA TSA to the release of the valve connected to terminal 19 t5 Interval from the end of interval t4 t4 to the release of the load controller or valve at terminal 20 t6 Postpurge time identical with the permissible afterburn time t13 t7 Switch on delay for fan motor M2 t8 Duration of startup sequence excluding running time t11 t12 t9 Second safety time with burn...

Page 28: ...CC1N7785en 20 11 2017 Dimensions Dimensions in mm 1 5 108 5 27 5 27 5 37 7 5 103 103 7785m04 0305 123 LOK16 LGK16 2017 Siemens AG Building Technologies Division Berliner Ring 23 D 76437 Rastatt Subject to change Plug in base AGM17 AGM17 1 ...

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