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SIEMENS LME11/21/22 CONTROL BOX

The series of equipment LME.. is used for the starup and supervisione of

1- or 2- stage gas burners. The series LME..is interchangeable with the

series LGB.. and LMG.., all diagrams and accessories are interchangea-

ble, the main  features are:

z

Indications of error codes by a signalling multicolor LED in the lockout

reset button;

z

Programmer fix times for the digital management of signals.

Comparative table

Preconditions for burner startup

z

Burner control must be reset

z

All contacts in the line are closed, request for heat

z

No undervoltage

z

Air pressure switch LP must be in its “no-load” position

z

Fan motor or AGK25 is closed

z

Flame detector is darkened and there is no extraneous light

Undervoltage

Safety  shutdown  from  the  operating  position  takes  place  should  mains

voltage drop below about AC 175 V (at UN = AC 230 V)
Restart is initiated when mains voltage exceeds about AC 185 V (at UN =

AC 230 V).

Controlled intermittent operation

After no more than 24 hours of continuous operation, the burner control

will initiate automatic controlled shutdown followed by a restart.

Reversed polarity protection with ionization

If the connections of live conductor (terminal 12) and neutral conductor

(terminal 2) aremixed up, the burner control will initiate lockout at the end

of  the safety time “TSA”.

Control sequence in the event of fault

If lockout occurs, the outputs for the fuel valves, the burner motor and the

ignition equipment will immediately be deactivated (< 1 second).

Operational status indication

In normal operation, the different operating states are showed by means

of the multicolor LED, inside the lockout reset button:

During startup, status indication takes place according to the table:

START-UP PROGRAM

As far as the startup program, see its time diagram:

A

Start command (switching on)

This  command  is  triggered  by  control  thermostat  /  pressure  controller

«R».  Terminal  12  receives  voltage  and  the  programming  mechanism

starts running. On completion of waiting time «tw» with the LME21..., or

after air damper «SA» has reached the nominal load position (on comple-

tion of «t11») with the LME22..., fan motor «M» will be started.

tw

Waiting time

During the waiting time, air pressure monitor «LP» and flame relay «FR»

are tested for correct contact positions.

t11 Programmed opening time for actuator «SA»

(Only with LME22...) The air damper opens until the nominal load position

is reached. Only then will fan motor «M» be switched on.

t10 Specified time for air pressure signal

On completion of this period of time, the set air pressure must have built

up, or else lockout will occur.

t1

Prepurge time

Purging  the  combustion  chamber  and  the  secondary  heating  surfaces:

required with low-fire air volumes when using the LME21... and with nomi-

nal load air volumes when using the LME22.... The diagrams show the so-

called prepurge time «t1» during which air pressure monitor «LP» must

indicate that the required air pressure is available. The effective prepurge

time «t1» comprises interval end «tw» through «t3».

t12 Programmed closing time for actuator «SA»

(Only with LME22...)During «t12», the air damper travels to the low-fire

position.

t3 Preignition time

During «t3» and up to the end of «TSA», flame relay «FR» is forced to

close. On completion of «t3», the release of fuel is triggered at terminal 4.

TSA Ignition safety time

On completion of «TSA», a flame signal must be present at terminal 1.

That flame signal must be continuously available until shutdown occurs,

or else flame relay «FR» will be deenergized, resulting in lockout.

t4 Interval BV1 and BV2-LR

Time between the end of TSA and the signal to the second fuel valve BV2

or to the load controller LR

B - B'

 Interval for flame establishment

C

 

Burner operation position

C - D

  Burner operation (heat production)

D

 

Controlled by "R" shutdown

The burner stops and the control device is ready for a new startup.

LGB Series 

LMG Series

LME Series

---

LMG 25.33

LME 11.33

LGB 21.33

LMG 21.33

LME 21.33

LGB 22.33

LMG 22.33

LME 22.33

red LED 
yellow LED
green LED

Steady on

Off

Status

Color code

Color

Waiting time tw, other 

waiting states

Off

Ignition phase, ignition 

controlled

Flashing yellow

Operation, flame ok

Green

Operation, flame not 

ok

Flashing green

Extraneous light on 

burner startup

Green - red

APPENDIX

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Undervoltage

Yellow - red

Fault, alarm

Red

Error code output 

(refer to “Error code 

table”)

Flashing red

Status

Color code

Color

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Содержание LG70 L-.TN 10 Series

Страница 1: ...M039135CG Rev 6 2 07 2020 BURNERS BRUCIATORI BRULERS BRENNER QUEMADORES Idea Series Gas burners MANUAL OF INSTALLATION USE MAINTENANCE LG NG70 LGX NGX70 LG NG90...

Страница 2: ...e employed exclusively for the use for which it was designed Before connecting the burner make sure that the unit rating is the same as delivery mains electricity gas oil or other fuel Observe caution...

Страница 3: ...ixtures DIRECTIVES AND STANDARDS Gas burners European directives Regulation 2016 426 UE appliances burning gaseous fuels 2014 35 UE Low Tension Directive 2014 30 UE Electromagnetic compatibility Direc...

Страница 4: ...quipment of machi nes EN 60335 2 Electrical equipment of non electric appliances for house hold and similar purposes Safety requirements Burner data plate For the following information please refer to...

Страница 5: ...2 9 0 Gas pressure min max mbar see Note 2 Power supply 230V 1N ac 50 Hz Total power consumption kW 0 40 Electric motor kW 0 10 Protection IP40 Approx weight kg 14 Valves size Gas connection 3 8 Rp1...

Страница 6: ...upply 230V 1N ac 50 Hz Total power consumption kW 0 40 Electric motor kW 0 10 Protection IP40 Approx weight kg 14 Valves size Gas connection 3 8 Rp1 2 1 2 Rp1 2 1 2 Rp1 2 1 2 Rp1 2 Operation High low...

Страница 7: ...NL I2ELL DE I2Er FR Only for I2EK the appliance was configured for the appliance category K I2K and is suitable for the use of G and G distribution gases according to the specifications as included in...

Страница 8: ...8 299 78 5 NG70 L 1 2 443 34 157 287 410 365 75 291 80 95 99 162 218 M8 155 86 138 110 285 408 118 241 168 14 438 299 78 5 NG90 S 1 2 365 34 70 295 331 365 75 291 80 95 102 162 218 M8 155 86 138 110 2...

Страница 9: ...andard LGX NGX70 383 76 76 299 299 304 14 291 80 98 99 145 218 M8 153 96 120 108 296 296 130 130 167 7 438 291 Extended LGX NGX70 451 66 149 294 377 304 14 291 80 98 99 145 218 M8 153 96 120 108 292 3...

Страница 10: ...URE IN CCOMBUSTION CHAMBER mbar LG90 L TN kW LG90 L AB kW 1 0 5 0 0 5 1 1 5 2 2 5 3 20 30 40 50 60 70 80 1 0 5 0 0 5 1 1 5 2 2 5 3 10 20 30 40 50 60 70 80 1 0 5 0 0 5 1 1 5 2 2 5 3 30 40 50 60 70 80 9...

Страница 11: ...3 h GAS PRESSURE mbar NG90 M TN Gas rate Stm3 h NG90 M AB Gas rate Stm3 h L P G Burners GAS PRESSURE mbar LG70 L TN Gas rate Stm3 h LG70 L AB Gas rate Stm3 h 1 0 5 0 0 5 1 1 5 2 2 5 3 35 45 55 65 75 1...

Страница 12: ...f 22300 kcal Stm3 15 C 1013 mbar and a density of 2 14 kg Stm3 When the calorific value and the density change the pressure values should be adjusted accordingly 2 4 6 8 10 12 14 16 18 1 1 5 2 2 5 3 3...

Страница 13: ...lolts D completely 9 seal the space between the blast tube and the refractory lining with appropriate insulating material ceramic fibre cord or refractory cement Matching the burner to the boiler The...

Страница 14: ...Once the train is installed connect the gas valves group plug Fig 3 Key a Heat output in kW b Length of the flame tube in meters c Flame tube firing intensity in MW m3 d Combustion chamber diameter m...

Страница 15: ...ger than 3 meters insert a sectioning relay following the attached electrical wiring diagram Burner power supply connector HIGH LOW flame connector Single stage burner connector Double stage burner co...

Страница 16: ...or 230V phase phase without a neutral as fas as the Siemens LME2 control box the RC Siemens RC466890660 filter must be inserted between terminal 2 and the earth terminal on the board Key C Capacitor 2...

Страница 17: ...Measuring the gas pressure in the combustion head In order to measure the pressure in the combustion head insert the pressure gauge probes one into the generator s pressure outlet Fig 4 2 to get the p...

Страница 18: ...lorific value of 22300 kcal Stm3 15 C 1013 mbar and a density of 2 14 kg Stm3 When the calorific value and the density change the pressure values should be adjusted accordingly Gas pressure in combust...

Страница 19: ...e maximum output high flame first by means of the air damper and the valves group pressure stabiliser respectively Gas pressure in combustion head LG70 L Gas rate Stm3 h LG90 L Gas rate Stm3 h ATTENTI...

Страница 20: ...ards the MIN position rotating clockwise the VRT screw Fig 5 go on adjusting air and gas flow rates check continuosly the flue gas analisys as to avoid combustion with little air dose the air accordin...

Страница 21: ...u smetns are accomplished close screw A Fig 8 in the measuring nozzle The air flow rate can be adjusted by means of the V screw The air damper position is shown on the graduated indes I where 0 refe r...

Страница 22: ...g the round plate C turn clockwise to decrease the gas rate or counterclockwise to increase it The index S shows the opening angle of the butterfly valve 8 If it was necessary to change the low flame...

Страница 23: ...follows Be sure that the filter is clean Remove the transparent plastic cap While the burner is operating at the maximum output test the gas pressure on the pressure port of the minimum gas pressure s...

Страница 24: ...L LEADS OPENING THE GENERATOR DOOR DISMANTLING OF PART OF THE BURNER NEVER OPEN OR DISMANTLE ANY COMPONENT OF THE MACHINE OPERATE ONLY THE MAIN SWITCH WHICH THROUGH ITS EASY ACCESSIBILITY AND RAPIDITY...

Страница 25: ...DLE 405 412 Check the filter at least once a year Change the filter if the pressure difference between pressure connection 1 and 3 Fig 16 Fig 17 is p 10 mbar Change the filter if the pressure differen...

Страница 26: ...on head To remove the combustion head proceed as follows 1 remove the burner cover 2 unscrew the VT fixing screws 3 disconnect the ignition cable CA unscrew the fixing nuts D and shift the combustion...

Страница 27: ...ue shown check the position of the detection electrode the electrical contacts and if necessary replace the detection electrode Seasonal stop To stop the burner in the seasonal stop proceed as follows...

Страница 28: ...MAIN SWITCH OPEN LACK OF GAS MAXIMUM GAS PRESSURE SWITCH DEFECTIVE IF PROVIDED THERMOSTATS PRESSURE SWITCHES DEFECTIVE OVERLOAD TRIPPED INTERVENTION AUXILIARIES FUSE INTERRUPTED CONTROL BOX FAULTY DEF...

Страница 29: ...EAD 8 2 FLANGE 7 2 AIR DAMPER ASS Y 8 3 BUTTERFLY VALVE INDEX ASS Y 7 3 FAN WHEEL 8 4 INSPECTION GLASS 7 4 PRESSURE SWITCH 8 5 BUTTERFLY VALVE 7 5 MOTOR 8 6 COMBUSTION HEAD 7 6 AIR DAMPER INDEX ASS Y...

Страница 30: ...30...

Страница 31: ...lamp LGB LMG LME SIEMENS control box MA Burner power supply terminal board MV Fan motor N Neutral PA Air pressure switch PG Minimum gas pressure switch ST Thermostats or pressure switches group TA Ign...

Страница 32: ...flame indicator light LGB22 LMG22 LME22 SIEMENS control box MV Fan motor PA Air pressure switch PG Minimum gas pressure switch STA4 5B0 37 63N30L BERGER actuator ST Thermostats or pressure switches s...

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Страница 39: ...with the LME22 fan motor M will be started tw Waiting time During the waiting time air pressure monitor LP and flame relay FR are tested for correct contact positions t11 Programmed opening time for a...

Страница 40: ...d time for air pressure signal t11 Programmed opening time for actuator SA t12 Programmed closing time for actuator SA SB R W GP AL M LP BV1 Z FS tw t1 t3n TSA t4 7 t10 EK2 12 10 3 7 4 6 1 8 t3 A B B...

Страница 41: ...W Limit thermostat pressure switch Z Ignition transformer LME22 connection diagram NT PC control RESET EK FSV ION 1 2 3 M 4 BV1 5 7 Z 10 AL T 12 R W GP STB 9 7101 24 0606 pa 6 LP 8 EK 11 K1 K2 1 K3 K...

Страница 42: ...r code table the device repeats the blinks for regular intervals During diagnostics the control outputs are deactivated the burner remains shut down external fault indication is deactivated fault stat...

Страница 43: ......

Страница 44: ...ia L Galvani 9 35011 Campodarsego PD ITALY Tel 39 049 9200944 Fax 39 049 9200945 9201269 web site www cibunigas it e mail cibunigas cibunigas it Note specifications and data subject to change Errors a...

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