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CC1N7153en 
21.09.2016 

 Building 

Technologies 

Division

 

 

 

7

153

 

 

 

 

 

 

 

Oil Burner Controls 

LAL...

 

 

Oil burner controls 

 

For oil atomizing burners of medium to large capacity 

 

For multistage or modulating burners in intermittent operation 

 

With or without air pressure supervision for checked air damper control 

 

Flame supervision 
– with photoresistive detector QRB 
– or blue-flame detector QRC1 
– or silicon photocell detector RAR9 

 

Suitable for use with air heaters (WLE) 

 

The LAL and this Data Sheet are intended for OEMs which integrate the oil 
burner controls in their products! 

Use 

 

For the control and supervision of oil atomization burners 

 

For burners of medium to high capacity 

 

For intermittent operation (at least one controlled shutdown every 24 hours) 

 

Can be universally used with multistage or modulating burners 

 

Suited for use with stationary air heaters (WLE) 

 
The flame supervision is ensured via a Photoresistive detectors QRB

blue-flame 

detectors QRC1 or Silicon photocell detectors RAR9. 
 
LAL1 

- Yellow- and blue-flame burners without air pressure supervision 

LAL2 

- Yellow-flame burners with air pressure supervision 

LAL3.25  - For special applications, e.g. burners of incinerator plant 

  (for details, refer to «Type summary» and «Notes») 

Summary of Contents for LAL Series

Page 1: ...integrate the oil burner controls in their products Use For the control and supervision of oil atomization burners For burners of medium to high capacity For intermittent operation at least one controlled shutdown every 24 hours Can be universally used with multistage or modulating burners Suited for use with stationary air heaters WLE The flame supervision is ensured via a Photoresistive detector...

Page 2: ...applying a force of no more than 10 N without using any tools or pointed objects Do not press the lockout reset button on the unit or the remote reset button input 21 for more than 10 seconds since this will damage the lockout relay in the unit Fall or shock can adversely affect the safety functions Such units must not be put into operation even if they do not exhibit any damage For safety reasons...

Page 3: ...conds at the latest c With wire strap B Simulation of loss of flame during operation For that purpose darken the flame detector during operation and maintain that state Lockout d Without wire strap B Simulation of loss of flame during operation For that purpose darken the flame detector during operation and maintain that state Repetition followed by lockout at the end of TSA e Burner startup with ...

Page 4: ...nning of short preignition or long preignition and that must remain closed until controlled shutdown occurs otherwise lockout Maximum current draw refer to Technical data Z connected to terminal 15 short and long preignition For use in applications with short preignition the oil supply must be equipped with two shutoff valves connected in series Observe the following EN 298 2012 Section 7 101 3 3 ...

Page 5: ...atic 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 declaration of conformity Note on DIN EN 60335 2 102 Household and similar electrical appliances Safety Part 2 102 Particular requirements for gas oil and solid fuel burning appliance...

Page 6: ...r 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 electronic components and must not be disposed of together with domestic waste Local and currently valid legislation must be observed Mechanical design Plug in design Exchangeable unit fuse including spare fuse Differe...

Page 7: ...2 5 BPZ LAL3 25 LAL3 25 4 22 5 5 2 5 From the start 15 7 5 7 5 15 2 5 47 10 Optional Optional 15 5 35 With air pressure supervision From the time the air pressure signal is received Does not apply to LAL1 Available as AC 100 110 V versions add type suffix 110 V when ordering Flame supervision only with QRB or RAR 4 Special applications such as incinerator plants Legend of times TSA Ignition safety...

Page 8: ...ateral illumination Silicon photocell detectors RAR9 See Data Sheet N7713 Actuators Actuator SQN3 See Data Sheet N7808 Accessories for medium capacity burner controls Plug in base AGM410490500 Article no BPZ AGM410490500 With Pg11 thread for cable entry glands See Data Sheet N7230 Plug in base AGM13 1 Article no BPZ AGM13 1 With M16 thread for cable entry glands See Data Sheet N7230 Others Coaxial...

Page 9: ... Between terminals 4 and 14 LP 1 A AC 250 V 1 A AC 250 V 1 A AC 250 V 5 A peaks of 20 A 5 A Permissible length of the standard detector cable laid separately See Technical data section Flame supervision Capacity Starting output 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 2...

Page 10: ...ed Separate cable in cable duct Max 1000 m 20 m 30 m 3 core cable Max 1 m 2 core cable for the detector line bl sw separate single core cable for the live conductor br Max 20 m Shielded cable e g RG62 shield insulated 200 m RAR9 100 m Shield To terminal 23 To comply with requirement of EN 298 clause 8 5 Surge immunity test for cable lengths above 10 m appropriate filter elements would have to be u...

Page 11: ...ion t12 Air damper running time to the low fire position t13 Permissible afterburn time TSA Ignition safety time FS BV2 min LK 0 M R 100 LR BV1 M1 M2 Z M P R T t12 t4 t16 t5 A B C D t11 t13 t6 t7 t1 t3 t3n TSA t3 7153a09 0498 Modulating expanding flame burner R LR t5 t11 t12 t13 FS min LK 0 M 100 RV A BV1 M2 Z M P R M1 T t4 t3 t7 t1 TSA B t6 C D 7153a10 0498 The following features of the LAL affor...

Page 12: ... remote lockout warning device remote reset remote emergency shutdown In addition with LAL2 LAL3 possibility of air pressure supervision with functional test of the air pressure monitor on startup possibility of semiautomatic burner startup Flame detector and flame simulation test are made automatically during burner off times and the prepurge time t1 If loss of flame occurs during operation the b...

Page 13: ...t preignition the oil supply must be equipped with two shutoff valves connected in series Observe the following EN 298 2012 Section 7 101 3 3 Prepurge time for oil burner control systems and the corresponding application standards t3 Long preignition time Z connected to terminal 15 With LAL1 Z is switched on when start command is given With LAL2 LAL3 Z is switched on when LP changes over no later ...

Page 14: ...uring operation the LAL will initiate lockout For automatic start repetition the clearly marked wire link B on the plug in section of the LAL must be cut away C Controlled shutdown In the case of controlled shutdown BVx will immediately be closed At the same time the sequence switch is started to program t6 C D Sequence switch travels to start position A t6 Postpurge time Fan M2 connected to termi...

Page 15: ...ing signal at terminal 8 from the auxiliary switch m for the low fire position Terminals 6 7 and 15 are live until fault has been corrected 1 Lockout No flame signal at the end of the safety time TSA I Lockout Flame signal has been lost during operation After the lockout reset the burner control sequence switch first returns to the start position and then initiates a burner restart If lockout occu...

Page 16: ... B A t7 BV2 BV1 Z SA 15 16 17 18 a z M 20 19 9 LR t4 t3 TSA t5 t1 t12 t16 t11 a z 23 m 11 10 8 22 B t13 1 v 7153a01 0814 LK Si QRB sw bl br QRC1 23 22 1 SB M1 M2 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 EKx for more than 10 seconds ...

Page 17: ...mples cont d LAL2 LAL3 H N t3n t3 C D A L EK2 AL 21 1 AS 2 1 3 3 R 4 5 6 7 t6 B A t7 BV2 BV1 Z SA 15 16 17 18 a z M 20 19 9 LR t4 t3 TSA t5 t1 t12 t16 t11 a z 7153a02 0814 m LK 11 10 8 22 B t13 1 v LP 14 12 13 t10 P 23 Si QRB SB M1 M2 W 24 22 RAR Caution Do not press lockout reset button EKx for more than 10 seconds ...

Page 18: ...xamples 5 a L1 IV VI XIV ar2 22 23 18 2 3 1 3 LK 23 L a b a b a a b 3 b a a b a b a V 9 v a b b b 22 23 24 22 23 24 SB Warning Do not press the lockout reset button EKx for more than 10 seconds For the connection of the safety shutoff valve refer to the plant diagram provided by the burner supplier LAL1 LAL2 LAL3 ...

Page 19: ... t4 t3 t3n B C D t6 t3 TSA t5 t20 t13 t10 t16 t8 Positions of lockout indication Control output at terminal P 1 20 4 7 19 8 17 15 9 9 10 I II III IV V VI VII VIII IX 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 7153d01e 0404 12 16 11 18 XV a b These data do not apply to LAL1 ...

Page 20: ...ith no air damper or with air damper not controlled by the LAL Wiring required with LAL2 for operation with no air pressure supervision 13 12 14 4 5 6 R W d1 N M 7 7153a15 1001 If an auxiliary contact d1 of the fan contactor is included in the circuit as shown in the diagram ignition and release of fuel take place only when the contact is closed Semiautomatic startup 3 12 13 14 4 5 AL I W N L3 LP ...

Page 21: ...ciple For actuator SA type SQN see Data Sheet N7808 for other connections refer to Connection diagrams Pre and postignition when the ignition transformer is connected to terminal 15 Modulating expanding flame burner 16 8 20 LR N 9 11 M 10 Z N 17 18 19 RV LK SA a m z BV1 7153a06 1195 L LR SA BV1 RV Load control with modulating controller with galvanically separated control contacts for positioning ...

Page 22: ...tor with negative temperature coefficient QRC1 Blue flame detector QRB Photoresistive detector R Control thermostat or pressurestat RAR Silicon photocell detector SA Air damper actuator SB Safety limit thermostat Si External primary fuse SM Synchronous motor of sequence switch sw Black v In the actuator Auxiliary changeover switch for position dependent release of fuel V Flame signal amplifier W L...

Page 23: ...nected to terminal 15 t3n Postignition time Z connected to terminal 15 t4 Interval between voltage at terminals 18 and 19 BV1 BV2 t5 Interval between voltage at terminals 19 and 20 BV2 load controller t6 Postpurge time with M2 t7 Interval between start command and voltage at terminal 7 start delay time for M2 t8 Duration of startup sequence excluding t11 and t12 t10 Only with LAL2 LAL3 Interval fr...

Page 24: ... CC1N7153en 21 09 2016 Dimensions Dimensions in mm 1 5 108 5 27 5 27 5 37 7 5 103 103 7153m03 0305 123 LAL 2016 Siemens AG Building Technologies Division Berliner Ring 23 D 76437 Rastatt Subject to change Plug in base AGM410490500 AGM13 1 ...

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