7130 Oil Burner Controls LMO14... LMO24... LMO44
Contents
1. SIEMENS rm ISO 9001 cE LANDIS Mos 11189 STAEFA T amp Ame a Ds Coriton E Dt hem EN ea Oil Burner Controls LMO14 LMO24 LMOAA Microcontroller based oil burner controls for the startup supervision and control of forced draft oil burners in intermittent operation Standard versions with an oil throughput up to 30 kg h special versions above 30 kg h The LMO14 LMO24 LMO44 and this Data Sheet are intended for use by OEMs which integrate the burner controls in their products Use features Use The LMO are designed for the startup and supervision of single or 2 stage forced draft oil burners in intermittent operation Yellow burning flames are supervised with photoresistive detectors QRB blue burning flames with blue flame detectors QRC In terms of housing dimensions electrical connections and flame detectors the L MO are identical with the LOA oil burner controls Oil burners with fans to EN 267 Burner controls for use with atomization oil burners of monoblock design to EN 230 LMOAA for use with stationary direct fired air heaters General features Undervoltage detection Electrical remote reset Bridging contact for oil preheater Monitoring of time for oil preheater Accurate and reproducible control sequence through digital signal handling Controlled intermittent operation after 24 hours of continuous operation Limitati2. e Maintenance work must be carried out by qualified staff e Each time a unit has been replaced check to ensure that wiring is in an orderly state and that the wires are firmly connected Make the safety checks as detailed in Commissioning notes e Use the service adapters KF8885 KF8833 KF8840 for only short periods of time Disposal notes together with household waste X The unit contains electrical and electronic components and may not be disposed of Local and currently valid legislation must be observed 3 12 Siemens Building Technologies CC1N7130en HVAC Products 15 10 2002 Mechanical design The housing is made of impact proof heat resistant and flame retarding plastic It is of plug in design and engages audibly in the base The housing accommodates the microcontroller which controls the control sequence and the control relays for load control electronic flame signal amplifier lockout reset button with its integrated 3 color signal lamp for operational status and error messages and the socket for connecting the interface adapter OCI400 Indication and diagnosis Multicolor indication of operational status and error messages Transmission of operational status and error messages and detailed service infor mation through additional interface adapter OCI400 and PC Windows software ACS400 Type summary Type reference Mains Fuel Burner 1 Remote i Comparable voltage valve capacity reset type of LOA
3. the burner will be reignited but only until the end of TSAmax This means that several ignition attempts can be made during TSA refer to Control sequence If the flame is lost during operation a maximum of 3 repetitions can be made If the flame is lost for the fourth time during operation the burner will initiate lockout The repetition count is restarted each time controlled switching on by R W SB takes place CC1N7130en 15 10 2002 Operation display diagnosis Lockout reset button EK is the key operating element for resetting the burner control and for activating deactivating the diagnostic func tions Operation 7130205 0700 Red The multicolor LED in the lockout reset button is the key indicating Yellow element for both visual diagnostics and interface diagnostics Green LED 7130z06e 0700 Both EK and LED are located under the transparent cover of the lockout reset button There are 2 diagnostic choices 1 Visual diagnostics Operational status indication or diagnostics of the cause of fault 2 Interface diagnostics With the help of the interface adapter OCI400 and PC soft ware ACS400 or flue gas analyzers of different makes refer to Data Sheet 7614 Visual diagnostics In normal operation the different operational statuses are indicated in the form of color codes according to the color code table The interface diagnostics is activated by pressing the lockout reset
4. stages Standard versions LMO14 111B2 AC 230 V lt 30 kg h 15 16s LOA24 171B27 LOA26 171B27 ES 171A27 LMO44 441B1 AC 110V 1 lt 30kg h e 5s 10s 15s 10s LOA24171B47 RN O EE EER MTM MEE LMO24 111B2 AC 230 V 2 lt 30 kg h os 15 16s 10s 15s 10s 15s LOA24 171B27 LOA26 171B27 LOA36 171A27 LMO24 11481 ACTIOV 2 lt 30kg n e 5s 15 16s 10s 15s 10s 15s LOA24 171B17_ LMO24 11382 AC230V 2 lt 30kg n e 5s 15 16s 10s 15s 3s 15s LOA24 173027_ LMO24 25582 AC2830V 2 lt gt 30kgh e 5s 25 260s 5s 25s 5s 15s Version for flash steam generators Version forflash steam generators LMO24 01182 AC230V 2 lt 30kg n e 5s 5 6s 10s 5s 10s 15s LOA24571C27 Suited for direct fired air heaters LMO44 25582 AC230V 2 30g h e 5s 25 260s 5s 25s 5s 5s LOA44 252A27 Legend TSAmax Maximum ignition safety time tw Waiting time t1 Prepurge time t1 Purge time t3 Preignition time t n Postignition time t4 Interval from flame signal to release of BV2 1 Bridging contact for oil preheater 4 12 Siemens Building Technologies CC1N7130en HVAC Products 15 10 2002 Ordering Oil burner control without plug in base refer to Type summary Electrical connections refer to Data Sheet 7201 Plug in base AGK11 Cable holders AGK65 AGK66 AGK67 Cable strain relief elements for AGK
5. 10 2002 Connection diagram and internal diagram LMO14 Control sequence LMO14 R A A B C D EK1 lt uC control w 7 7AT lt q o SB tw OH o a 8 Lo JOWI L 4 G COM L I Aap 3 X BV1 fA gt 4 o ti Al t3n Qs 27 7 6 FS J77 JAIL lt q Only with LMO14 113B2 re igniti N l QRC nly wi re ignition um in L jJ MHZ BVIF OS GE z r z 6 l A ope 41 7130a01e 0700 FS J Pai aA y lt 7130d02e 1002 12 Connection diagram and internal diagram Control sequence LMO24 LMOAA LMO24 LMO44 RA A B C D EK4 L N WV
6. 1N7130en HVAC Products 15 10 2002 Technical data General unit data Mains voltage AC 230 V 10 15 96 AC 110 V 10 96 15 Mains frequency 50 60 Hz 6 96 External primary fuse Si 6 3 A slow Power consumption 12 VA Mounting orientation optional Weight approx 200 g Safety class I Degree of protection IP 40 to be ensured through mounting Perm cable lengths max 3 m at a line capacitance of 100 pF m Detector cable laid separately 20m Remote reset laid sepatately 20m Max perm amperage at cos q gt 0 6 LMO14 LMO24 LMO44 Terminals 3 and 8 Terminals 4 5 6 and 10 Environmental Transport DIN EN 60 721 3 2 conditions Climatic conditions class 2K2 Mechanical conditions class 2M2 Temperature range 30 70 C Humidity lt 95 r h Operation DIN EN 60 721 3 3 Climatic conditions class 3K5 Mechanical conditions class 3M2 Temperature range LMC14 LMO2A 5 60 C LMOA4 20 60 C Humidity 95 r h A Condensation formation of ice and ingress of water are not permitted Flame supervision with Min detector current Max perm detector Max possible detector QRB and QRC required current current with flame with flame without flame typicall 45 uA 5 5 yA 100 uA 70 uA 5 5 JA 100 uA The values given in the table above only apply under the following conditions Mains voltage AC 230 V Ambient temperature 23 C Green LED for opera Detector current in operation Detecto
7. 67 Electrical connections refer to Data Sheet 7203 Plug in base AGK13 Plug in housung AGK56 Cover AGK68 Flame detectors Photoresistive detectors QRB1 refer to Data Sheet 7714 Blue flame detector QRC1 refer to Data Sheet 7716 Diagnostic tool refer to Data Sheet 7614 Interface adapter OCI400 PC Windows software ACS400 Demo case KF8891 For demonstrating the functions of burner controls refer to User Manual B7989 Test case KF8843 For checking the functions of burner controls refer to Operating Instructions C7981 Test adapter KF8885 For checking the functions of burner controls on the burner With switch for manual startup of the burner With switch for simulating the oil preheater s release contact With 2 pairs of jacks for measuring the flame detector current refer to Operating Instructions C7986 Test adapter KF8833 For checking the functions of burner controls on the burner With signal lamps for program indication With one pair of jacks for measuring the flame detector current Test adapter KF8840 For checking the functions of burner controls on the burner With signal lamps for program indication With on off switch for simulating the flame signal With holes for checking the control voltages at the tabs of the burner control With one pair of jacks for measuring the flame detector s resistance 9 12 Siemens Building Technologies CC
8. button for at least 3 seconds refer to Data Sheet 7614 If by accident the interface diagnostics has been activated in which case the slightly red light of the signal lamp LED flickers it can be deactivated by pressing again the lockout reset button for at least 3 seconds The moment of switching over is indicated by a yellow light pulse Operating position Operating position Visual diagnostics Interface diagnostics PC analyzer Color ae table 7130z01e 0602 Operational status During startup status indication takes place according to the following table indication Color code table for multicolor signal lamp LED Waiting time tw other waiting states Oil preheater on waiting time tw Gu Yellow Ignition phase ignition controlled Operation flame o k Operation flame not o k OLOou0ououo Flashing green Undervoltage 1 1 n A409A49A9A9A JwYelowred Faut alarm Aes Red Error code output refer to Error code AO AO AO AO Flashing red table Interface diagnostics A4A4A4AAA A A Red flicker light Legend Steady on A Red O Off e Yellow _ Green 9 12 Siemens Building Technologies CC1N7130en HVAC Products 15 10 2002 Diagnostics of the After lockout the red fault signal lamp LED remains steady on cause of fault In that condition the visual diagnostics of the cause of fault according to the error code table can be activated b
9. nition safety time tw Waiting time t3 Preignition time t1 Prepurge time t3n Postignition time t1 Purge time t4 Interval from flame signal to release BV2 A Start of startup sequence with burners using an OH C Operating position A Start of startup sequence with burners using no OH D Controlled shutdown by R B Time of flame establishment HEN Control signals uC1 Microcontroller 1 TT Required input signals uC2 Microcontroller 2 XXX Perm input signals 11 12 Siemens Building Technologies CC1N7130en HVAC Products 15 10 2002 Dimensions Dimensions in mm m LMO 22 NE LL i jas co o LO i x S S E zu e z 88 5 E 41 64 i i SIEMENS LANDIS amp STAEFA z30N 50 60Hz LMO14 111B2 TSAmax 10s Be a RAN Ah nd 010523000 Rg 5F192 2000 Meade in sarman cy C 2002 Siemens Building Technologies 1242 Subject to change Siemens Building Technologies CC1N7130en HVAC Products 15 10 2002
10. on of the number of repetitions Multicolor indication of fault and operational status messages CC1N7130en Siemens Building Technologies 15 10 2002 HVAC Products Warning notes A Mounting notes Installation notes To avoid injury to persons damage to property or the environment the following warning notes should be observed Do not open interfere with or modify the unit Before performing any wiring changes in the connection area of the LMO com pletely isolate the burner control from the mains supply all polar disconnection Ensure protection against electric shock hazard by providing adequate protection for the burner control s connection terminals Check to ensure that wiring is in an orderly state and that the wires are firmly con nected Press the lockout reset button operation button only manually applying a force of no more than 10 N without using any tools or pointed objects Fall or shock can adversely affect the safety functions Such units may not be put into operation even if they do not exhibit any damage When replacing LOA26 or LOA36 any remote lockout reset module ARK21 or similar modules contained in the burner or boiler must be removed Ensure that the relevant national safety regulations are complied with Installation work must be carried out by qualified staff Always run the high voltage ignition cables separately while observing the greatest possible distances to the unit and to othe
11. r cables Install switches fuses earthing etc in compliance with local regulations Ensure that the maximum permissible amperages will not be exceeded refer to Technical data Do not feed external mains voltage to the control outputs of the unit When testing the components controlled by the burner control fuel valves etc the LMO may never be plugged in Do not mix up live and neutral conductors Electrical connections of the flame detectors 2 12 Siemens Building Technologies HVAC Products It is important to achieve practically disturbance and loss free signal transmission Never run the detector cable together with other cables Line capacitance reduces the magnitude of the flame signal Use a separate cable Observe the maximum permissible lengths of the detector cables refer to Techni cal data CC1N7130en 15 10 2002 Commissioning notes e Commissioning work must be carried out by qualified staff e When commissioning the plant or when doing maintenance work make the follow ing safety checks ened i mi nnd posed to extraneous light latest Burner operation with simulated loss of Repetition followed by lockout at flame for that purpose darken the flame the end of TSA detector during operation and maintain that state Norms and standards Conformity to EEC directives Electromagnetic compatibility EMC immunity 89 336 EEC Low voltage directive 73 23 EEC Service notes
12. r current in operation tional status indication Flame signal instable Flame signal stable Green LED flashing Green LED steady on lt 45 pA gt 45 pA lt 45 pA gt 45 pA The values given in the table above only apply under the following conditions Mains voltage AC 230 V Ambient temperature 23 C 6 12 Siemens Building Technologies CC1N7130en HVAC Products 15 10 2002 Measuring circuit QRB for detector current 11 12 LWO 7 v 7 bl SW pA DC QRB 11 bl QRC 12 1 SW br pA DC QRC1 LMO 7130v02 0700 Legend UA DC bl SW br DC microammeter with an internal resistance of Ri max 5 kQ Blue Black Brown As an alternative to detector current measurement the diagnostic tool OCI400 ACS400 can be used In that case connection of a DC microammeter is not required Siemens Building Technologies HVAC Products 7 12 CC1N7130en 15 10 2002 Function Preconditions for startup Undervoltage Time supervision oil preheater Controlled intermittent operation Control sequence in the event of fault Resetting the burner control Ignition program with LMO14 113B2 and LMO24 113B2 Limitation of repetitions 8 12 Siemens Building Technologies HVAC Products Burner control is reset All contacts in the line are closed and there is demand for heat No undervoltage Flame detector is darkened and there is no ext
13. raneous light e Safety shutdown in the operating position takes place should mains voltage drop below about AC 165 V UN AC 230 V e Restart is initiated when mains voltage exceeds about AC 175 V UN AC 230 V If the oil preheater s release contact does not close within 10 minutes the burner control will initiate lockout After 24 hours of continuous operation at the latest the burner control will initiate auto matic controlled shutdown followed by a restart If lockout occurs the outputs for the fuel valves burner motor and ignition equipment will immediately be deactivated 1 second Cause Response Mains failure Restart Voltage has fallen below the undervoltage Restart threshold Extraneous light during t1 Lockout at the end of t1 Extraneous light during tw Prevention of startup lockout after 40 sec onds at the latest No flame at the end of TSA Lockout at the end of TSA Loss of flame during operation Max 3 repetitions followed by lockout Oil preheater s release contact does not Lockout close within 10 minutes In the event of lockout the LMO remains locked and the red signal lampLED will light up The burner control can immediately be reset This state is also maintained in the case of mains failure Whenever lockout occurs the burner control can immediately be reset To do this press the lockout reset button for about 1 second 3 seconds If the flame is lost during TSA
14. uC control W Z Sr a AAT A SB tw X BV1 AL X BV2 7 l QRB OW PL EK2 ENC i hoe Z 7 OH BV2 NN FS pj N QRC Si j 1o e PREM L M aZ BV1 X nra Only with LMO24 113B2 re ignition t3n Bn i l L 4 dele QE z fA 8 7 7130a02e 0700 7130d03e 1102 gt 9 gt FSI J7Z7 ma E Legend AL Alarm device OW Release contact of oil preheater BV Fuel valve OH Oil preheater EK1 Lockout reset button QRB Photoresistive flame detector EK2 Remote lockout reset button QRC M Blue flame detector FS Flame signal bl blue br brown sw black FSV Flame signal amplifier R Control thermostat or pressurestat K Contacts of control relay SB Safety limit thermostat kbr Cable link required only when no oil preheater is used Si External primary fuse LED 3 color signal lamp W Limit thermostat or pressure switch M Burner motor Z Ignition transformer TSA Ig
15. y pressing the lockout reset button for more than 3 seconds Pressing the reset button again for at least 3 seconds the interface diagnostics will be activated for more detailed information refer to Data Sheet 7614 The following sequence activates the diagnostics of the cause of fault Lockout position Lockout position Lockout position Visual aa Interface diagnostic PC analyzer Error code table Signal lamp LED T 10 No establishment of flame at the end of TSA Faulty or soiled fuel valves Faulty or soiled flame detector Poor adjustment of burner no fuel Faulty ignition equipment Extraneous light on burner startup Q Reset 3s 7130204e 0602 3 blinks 5 blinks 7 blinks Too many losses of flame during operation limi tation of the number of repetitions Faulty or soiled fuel valves Faulty or soiled flame detector Poor adjustment of burner 8 blinks Time supervision oil preheater 9 blinks 10 blinks Off Wiring fault or internal fault output contacts During the time the cause of fault is diagnosed the control outputs are deactivated Burner remains shut down Fault status signal AL at terminal 10 according to the error code table The diagnostics of the cause of fault is quit and the burner switched on again by reset ting the burner control Press the lockout reset button for about 1 second lt 3 seconds 10 12 Siemens Building Technologies CC1N7130en HVAC Products 15
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