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APPENDIX: COMPONENTS CHARACTERISTICS

23

LANDIS LGB 21/22.. FLAME CONTROLLER

Function

The programme run is shown in the diagrams. The required and per-
missible input signals for the control part and flame supervision part
are pictured as a hatching correspondingly in the function diagrams. If
these input signals are missing, the controller interrupts the start-up
programme and initiates a lock-out at the place where the safety
regulations demand it.
The LGB types are fitted with under voltage protection, i.e. the load
relay AR is de-energized when the supply voltage falls below 140 V.
The burner control automatically attempts a new start-up when the
supply voltage again exceeds 140 V

A

Start-up command from the temperature or pressure
controller “R”

A-C

Start-up programme

C-D

Burner operation (heat production corresponding to the control
commands)

D

Controlled shut-down by “R”

LGB21

LGB22

Key for operation diagram

A

Start-up (control start-up by “R”)

B-B'

Interval for flame establishment

C

Operating position of the burner or release of the 2nd stage via
load controller LR

D

Controlled shut-down by "R"

tw

Waiting time, 8 sec. for LGB21; 9 sec. for LGB22

t1

Controlled pre-purge time, 30 sec.

t2

First safety time, 3 sec.

t3

Pre-ignition time, 2 sec. for LGB21; 3 sec. for LGB22

t4

Interval BV1- BV2 = Interval BV1- LR, 8 sec.

t10

Specified time for the air pressure signal, 5 sec. for LGB21;
3 sec for LGB22

t11

Programmed time to open the damper SA, max 12 sec.

t12

Programmed running time for air damper from OPEN to
LOW FLAME position, max 11 sec.

BV

Fuel valves

FS

Flame presence signal

GP

Gas pressure switch

LP

Air pressure switch

LR

Load controller

M

Fan  motor

R

Temperature or pressure controller

W

Safety thermostat or pressure switch

Z

Ignition transformer

ZV1

Main flame ignition gas valve or BV1 for burners with main

flame supervision

1...12 Terminals of the burner flame controls on AGK11's socket

Command signal from flame control

Input signals

Conditions for starting up the burner:

The burner control must not be locked out.

The contacts of the gas pressure switch ”GP", the temperature or
pressure switch “W" and the controller “R", must be closed.

Start-up programme

A

Start-up command (controlled start-up)

The regulator "R" supplies (due to terminal 12) the mechanism; the
fan starts up for pre-purge. The actuator SA moves the air damper to
the maximum load position (after the time t11).

tw

Waiting time

During this time the air pressure switch check for correctoperation.

t11

Running time for complete damper opening (OPEN)

(only for LGB22)

The fan motor is started only after the air damper has reached the full
load position.

t10

Specified time for the air pressure signal

When this time has elapsed, the set value of air pressure must have
built up, or a lock-out is initiated.

t1

Pre-purge time

For LGB21.. purging of the combustion chamber with the nominal air
load; for LGB22.. purging of the combustion chamber with the maxi-
mum air load. During this time, the pressure switch LP must give its
consent. The real time of pre-purgue is between the end of tw and the
start of t3.

t12 Programmed time to close the damper SA (MINIMUM)

During the time t12, the air damper moves to the low flame position.

t3 Pre-ignition time

During this time, and until to the end of the safety time t2, the flame
relay is forced to close. When time t3 has elapsed, the fuel release is
initiated at terminal 4.

t2 Safety time

At the end of safety time there must be a flame signal at the input 1 of
the flame signal amplifier, which must continues uninterruptedly until
controlled shut-down occurs, or the flame relay will deenergize, and
remains blocked in the fault position.

t4 Interval

When time t4 has elapsed, the controller starts.

B - B' Interval for flame establishment

C Burner operation position

C - D Burner operation (heat production)

Operation of the burner at the maximum strenght or, with a
flame controller for the load.

D Controlled by "R" shutdown

The burner stops, waiting for the next ignition.

Summary of Contents for S10

Page 1: ...Technical Documentation CIB Unigas Campodarsego PD Complying with 90 396 CEE GAS DIRECTIVE MANUAL OF INSTALLATION OPERATION MAINTENANCE GAS BURNERS S10 S18 DOUBLE STAGE VERSION M03952CC Rev 02 04 01...

Page 2: ...ry equipment only shall be used This unit shall be employed exclusively for the use for which it is meant Any other use shall be considered as improper and therefore dangerous The manufacturer shall n...

Page 3: ...ls or damage to property for which the manufacturer cannot be held liable Before installation it is recommended that all the fuel supply system pipes be carefully cleaned inside to remove foreign matt...

Page 4: ...3 OPERATION Available versions AB High low flame 4 BLAST TUBE LENGHT See overall dimensions S Standard L Long 5 DESTINATION COUNTRY see data plate 6 SPECIAL VERSIONS A Standard 7 EQUIPMENT Available...

Page 5: ...input in kcal h multiply value in kW by 860 Fig 4a Fig 4b A B BL C CL D E F G K J H P M N Q R S10 355 180 275 635 730 340 230 455 108 200 210 125 120 M8 169 7 55 100 S18 355 205 300 660 755 340 230 4...

Page 6: ...re in combustion chamber Fig 4 Key 1 Boiler 2 Gas pressure port on butterfly valve 3 Sightglass cooling port 4 Water column pressure gauge Curves are referred to a null pressure in combustion head NOT...

Page 7: ...boilers with a combustion chamber smaller in diameter or shorter than those described in the diagram please contact the supplier to verify that a correct matching is possible with respect of the appl...

Page 8: ...lves group 3 Leakage control device optional if burner input 1200 kW 4 Bellow joint 5 Manual shut off valve Remove the burner cover Carry out the electrical connections to the multiple con nector as s...

Page 9: ...e screw VS located under the cover C clockwise increases it anticlockwise decreases it 2 To adjust the flow rate of the air at high flame loosen the nut RA and turn the screw VRA clockwise increases t...

Page 10: ...rate using the nut RP1 turning it anticlockwise to increase it sign or clockwise to decrease it sig n 3 To adjust the output of the burner in low flame operation use the corresponding servocontrol cam...

Page 11: ...g 13a Fig 13b Key S Slit indicating the butterfly opening angle DB Stud TG lock nuts TG Butterfly valve opening adjustment stud RA Lock nut VRA Screw for adjusting combustion air to maximum flow rate...

Page 12: ...y means of the appropriate tool fitted with the servocontrol with SQN30 or by means of a screwdriver affecting on the screw into the cam all other servocontrols Landis SQN30 151 Berger STA6B3 41 Fig 1...

Page 13: ...t off valve n 5 in Fig 10 until the detected pressure is reduced by 50 Verify CO emissions of the burner if the measured value is less than 80 ppm screw down the adjusting ring nut until the burner lo...

Page 14: ...LIMINATE THE MALFUNCTION WARNING DURING NORMAL OPERATION THE PARTS OF THE BURNER NEAREST TO THE GENERATOR COUPLING FLANGE CAN BECOME VERY HOT AVOID TOUCHING THEM SO AS NOT TO GET BURNT OPERATION Bring...

Page 15: ...ctrodes is carried out after removing the combustion head Removing the combustion head Remove the burner from the gas supply line To access the combustion head abd the electrodes slcken the screw VE F...

Page 16: ...PEATS THE CYCLE NURMER DOESN T SWITCH TO HIGH FLAME BURNER S LOCKUOT DURING OPERATION BURNER STOPS AND REPEATS CYCLE DURING OPERATION BURNER S LOCKOUT AFTER START THE FLAME CONTROL DEVICE REPEATS CYCL...

Page 17: ...DIS servocontrol for air damper alternate SQN70 224A20 LANDIS servocontrol for air damper alternate ST Group of thermostats or pressure switches STA4 5B0 37 63N21L BERGER servocontrol for air damper S...

Page 18: ...PART III MAINTENANCE 18 ELECTRICAL DIAGRAMS Electrical diagram 01 320 Rev 3...

Page 19: ...PART III MAINTENANCE 19 Electrical diagram 01 427...

Page 20: ...PART III MAINTENANCE 20 SPARE PARTS...

Page 21: ...80703 2180703 7 CAPACITOR FOR SIMEL MOTOR 6030005 6030005 7 CAPACITOR FOR AEG MOTOR 6030003 6030003 8 TRANSFORMER 2170108 2170108 9 EXTENSION SCREW 2130016 2130027 10 DETECTION CABLE 6050211 6050211 1...

Page 22: ...GB 21 22 FLAME CONTROLLER 23 LANDIS LMG21 22 25 FLAME CONTROLLER 26 GAS MULTIBLOC REGULATOR DUNGS MB DLE 405 407 410 412 415 420 28 GAS MULTIBLOC REGULATOR DUNGS MB ZRDLE 28 VALVE PROVING SYSTEM DUNGS...

Page 23: ...n AGK11 s socket Command signal from flame control Input signals Conditions for starting up the burner The burner control must not be locked out The contacts of the gas pressure switch GP the temperat...

Page 24: ...iance is located a plexiglass lunette under which there is the indicator disc of programme s progress In the event of safety stop the programmer stops The disc shows as follows the position of the pro...

Page 25: ...stat or pressostat W Safety thermostat or pressostat Z Ignition transformer LGB21 Key programmer s diagram A start up command from regulator R AR main relay B burner operation C program start position...

Page 26: ...on time t3n Ignition time during TSA t4 Interval BV BV2 or BV1 LR t10 Specified time for air pressure signal t11 Programmed opening time for actuator SA t12 Programmed closing time for actuator SA Sta...

Page 27: ...lamp switched on Release of the flame control device Press the release button for 0 5 3 seconds Diagnosis of troubles Wait at least 10s Press the release button for 3s Count the number of flashing of...

Page 28: ...and their combinations MB410 412 Rp 3 4 1 1 4 and their combinations Max operating pressure 360 mbar Output pressure ranges MB S20 S22 4 to 20 mbar MB S50 S52 4 to 50 mbar Media Gases of families 1 2...

Page 29: ...APPENDIX COMPONENTS CHARACTERISTICS 29...

Page 30: ...APPENDIX COMPONENTS CHARACTERISTICS 30...

Page 31: ...APPENDIX COMPONENTS CHARACTERISTICS 31...

Page 32: ......

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