Bentone B 45i A2.2H J/K Technical specifications

Providing sustainable energy solutions worldwide
CR00343 178 127 56-4 2022-04-06
Installation- and maintenance instruction
B 45i A2.2H J/K
LMV37
AS67
Translation of the original instructions.

2Bentone
example Beispielexempel
352011030141
Designation
Type
Model
Serial no.
Motor supply
Main supply
MADE IN SWEDEN BY
LIGHT OIL 35-90kW 1,25-6,0 cSt 7-14bar
BF 1 KS 76-24
BF 1
BF 1 KS 76-24
1234567
1~230V 1,0A 50Hz IP 20
Man.Year 2019
Cap. Min-Max
3
?
1
-sv
1. Manualer på övriga språk
2. www.bentone.com\
nedladdning
eller scanna QR-koden.
3. Skriv in brännarens
artikelnummer som finns på din
typskylt (se bild) och välj ditt
språk.
Detaljerad ecodesign information
kan laddas ner på:
www.bentone.com/ecodesign.
-en
1. Manuals in other languages
2. www.bentone.com\download
or scan QR-code.
3. Enter the burner`s article
number on your data plate (see
picture) and select language.
Detailed ecodesign information
can be downloaded at:
www.bentone.com/ecodesign.
-da
1. Manualer på andre sprog
2. www.bentone.com\download
eller scan QR-koden.
3. Indtast brænderens
artikelnummer, der findes på
typeskiltet (se billede), og vælg
dit sprog.
Detaljerede oplysninger om
ecodesign kan downloades på:
www.bentone.com/ecodesign.
-fr
1. Manuels dans d’autres
langues
2. www.bentone.com\download
ou scannez le code QR.
3. Saisir le numéro d’article
du brûleur sur votre plaque
signalétique (consultez
l’illustration) et sélectionnez la
langue.
Des informations détaillées
sur l’écodesign peuvent être
téléchargées à l’adresse:
www.bentone.com/ecodesign.
-de
1. Gebrauchsanweisungen in
anderen Sprachen
2. www.bentone.com\download
oder scannen Sie den QR-Code.
3. Geben Sie die Artikelnummer
des Brenners auf Ihrem
Typenschild ein, (siehe Bild) und
wählen Sie die Sprache aus.
Detaillierte Informationen zum
Ecodesign können unter
www.bentone.com/ecodesign
heruntergeladen werden.
2

3Bentone
Table of contents
1. General Information __________________________________ 4
1.1 Delivery inspection ________________________________ 4
1.2 Safety ___________________________________________ 4
2. Technical data _______________________________________ 6
2.1 Dimensions B 45i A2.2H ___________________________ 6
2.2 Electric Specification ______________________________ 6
2.3 Working field B 45i A2.2H __________________________ 7
2.4 Setting for insert and air damper ____________________ 7
2.5 Setting of brake plate and air flow ___________________ 8
2.6 Burner installation _________________________________ 8
2.7 Nozzle and pressure_______________________________ 8
2.8 Nozzle table______________________________________ 9
2.9 Components ____________________________________ 11
3. General instructions _________________________________ 13
3.1 General rules ____________________________________ 13
4. Installation _________________________________________ 14
4.1 Handling and lifting instruktion _____________________ 14
4.2 Acceptance inspection____________________________ 15
4.3 Preparations for installation ________________________ 15
4.4 Distribution of oil _________________________________ 15
4.5 Electrical connection______________________________ 15
4.6 Mounting the burner on the boiler___________________ 16
4.7 Check oil line seals _______________________________ 16
4.8 Adjusting the air setting ___________________________ 17
5. Setting the burner ___________________________________ 18
5.1 Setting the combustion assembly ______________ 18
5.2 Setting the air pressure switch _____________________ 19
5.3 Pressure switch for min. oil pressure ________________ 20
5.4 Pressure switch for max. oil pressure________________ 20
5.5 Calculate prepurge time, Industrial applications _______ 20
5.6 Example of basic settings _________________________ 21
6. Service_____________________________________________ 22
6.1 Combustion device_______________________________ 22
6.2 Air dampers ____________________________________ 23
6.3 Fan ___________________________________________ 24
6.4 Vibration________________________________________ 25
6.5 Replacement of electrical components ______________ 26
6.6 Burner Service Schedule, Oil_______________________ 27
6.7 Component replacement intervals __________________ 27
7. Pump ______________________________________________ 28
7.1 SUNTEC AS ____________________________________ 28
8. Electric equipment __________________________________ 34
8.1 Safety system ___________________________________ 34
8.2 Wiring diagram _________________________________ 35
8.3 Component list LMV______________________________ 36
8.4 Components Electric box _________________________ 36
9. LMV37 Automatic control unit ________________________ 37
9.1 System structure/function description _______________ 37
9.2 General information ______________________________ 38
9.3 Technical Data Basic unit LMV37.4... ________________ 38
9.4 Connection and internal diagram ___________________ 43
10. Operation ________________________________________ 45
10.1 LMV37 automatic control unit ______________________ 45
10.2 List of phase displays _____________________________ 47
10.3 Automatic control unit levels _______________________ 48
10.4 Setting the automatic control unit ___________________ 53
10.5 Multistage operation _____________________________ 56
10.6 Backup and restore ______________________________ 64
10.7 Fault status message, display of errors and info_______ 68
10.8 Dispaly message of info ___________________________ 74
10.9 Resetting the automatic control unit_________________ 75
10.10Manual output __________________________________ 76
11. Parameter list ____________________________________ 78
12. Error code list ____________________________________ 87
13. Fault Location ___________________________________ 101
13.1 Burner will not start______________________________ 101
13.2 Burner will not start after normal use _______________ 101
13.3 Delayed ignition_________________________________ 102
13.4 Noise in pump __________________________________ 102
13.5 Pump pressure _________________________________ 103
14. Log of flue gas analysis___________________________ 104

4Bentone
1. General Information
165 105 01-2 2021-12-07
The burner may only be used for its intended purpose in accordance with the
product’s technical data.
We reserve the right to make design changes and cannot be held liable for
any misprints or typographical errors.
Modifying the design or using accessories or components that have not been
approved by Enertech in writing is strictly prohibited.
This Installation and Maintenance manual:
• is to be regarded as part of the burner and must always be kept near
the installation site.
• must be read prior to installation.
• is intended for use by authorised personnel.
1.1 Delivery inspection
• Make sure everything is delivered and the goods have not been
damaged during transit.
Transport damage must be reported to the shipping company.
• If something is wrong with a delivery, report it to the supplier.
1.2 Safety
- before installation:
• Installation and work on the burner and associated system
components may only be carried out by persons who have undergone
relevant training.
• The product is packaged to prevent damage from occurring when
handled – Handle the product with care! Lifting equipment must be
used to lift larger packages.
• The products must be transported/stored on a level surface in a dry
environment, max. 80% relative humidity, no condensation.
Temperature -20 to +60 °C.
- installation:
• The burner must be installed in accordance with local regulations for
fire safety, electrical safety, and fuel distribution.
• The premises must comply with local regulations pertaining to use of
the burner, and must have adequate air supply.
• The installation site must be free of chemicals.
• Fire extinguisher with Class BE recommended.
• Make sure when installing the burner that there is enough space to
service the burner.
• The electrical installation must be professionally carried out in
accordance with applicable high voltage regulations.
• Make sure that the burner is suitable for the application (see Technical
Data).

5Bentone
• All components must be installed without being bent, twisted or
subjected to mechanical or thermal forces that affect components.
• Care must be taken by the installer to ensure that no electrical cables
or fuel lines are crushed or otherwise damaged during installation or
service.
• Flame tubes, fan wheels and air dampers, for example, may contain
sharp edges.
- before first start:
• The burner must not be put into operation without proper safety and
protection devices.
• Permitted ambient temperature during operation -10 to +60 °C. Max.
80% relative humidity, no condensation.
• The surface temperature of the burner’s components may exceed
60°C.
• Handle with caution – the burner has moving parts, and there is risk of
crushing injuries.
• Seal inspections must be performed during installation and servicing to
prevent leakage.
• fitting and installation work has been completed and approved.
• electrical installation has been correctly performed.
• flue gas ducts and combustion air ducts are not blocked.
• all actuators and control and safety devices are in working order and
correctly set.
• If the boiler is equipped with an access hatch, this must be equipped
with a hatch opening switch connected to the burner’s safety system.
• When in operation, the burner’s noise level can exceed 85 dBA – use
hearing protection!
- Operation:
• Carry out all stipulated settings, service and inspection work within the
set time.
• If the oil burner control has a solid red light, contact your installer.

6Bentone
165 105 69-3
2. Technical data
The burner is intended for:
• Light oil, B10 heating oil/biofuel blend (as defined in DIN V51603-6).
and is used for:
• Water heating generators
• Steam generators
• Industrial applications
• Hot air generators
2.1 Dimensions B 45i A2.2H
* Min. recommended distance to floor.
Ø B
Ø C
AD
E
F
J
H
I
A Ø B Ø C D E F H I *J
B 45i A2-2H 240/340 159 134 480 252 328 262 515 200
Type Motor Complete
burner
Ljud
B 45i A2.2H 650 W
230/400V 50/60Hz
230/400V
3,2/1,9A 50Hz 84 dBA ± 0,5 dBA
2.2 Electric Specification
Burner correspond to IP 54

7Bentone
2.3 Working field B 45i A2.2H
-1,0
0,0
1,0
2,0
3,0
4,0
5,0
6,0
7,0
8,0
9,0
50 100 150 200 250 300 350 400 450 500 550
mbar
kW
8.6-45.5 kg/h
102-540 kW
160303-146-3
0
10
20
30
40
50
50 100 150 200 250 300 350 400 450 500 550
160303-193
kW
Air settings
Nozzle assembly
Scale
Burner output
2.4 Setting for insert and air damper
Basic settings should only be seen as setting values to get burner to start.
Once the burner has started and established flame, it is necessary to adjust
the settings so that they are adapted to the installation and the fuel used.
!Do not exceed
working field.

8Bentone
Nozzle: 45° Solid/semisolid
60° Solid/semisolid
80° Solid/semisolid
Pump pressure 14 bar (8-25 bar) depending on pump model
Combustion
device
d1d2d3
B 45i A2-2H ø (135) 165 14 ø (200) 224-270
d1
d2
d3
!*NB It is important
that the spark does
not strike against the
brake plate or nozzle
D
A
B
C
2.5 Setting of brake plate and air flow
a b c d
B 45i A2-2H 3.5-4.0 7.0-9.0 2.0-3.0 5.0-6.0
2.6 Burner installation
2.6.1 Hole patten
Make sure the hole pattern on the boiler is designed for burner flange.
2.7 Nozzle and pressure
Due to different furnace geometries and capacities, it is not possible to
recommend a nozzle model.

9Bentone
2.8 Nozzle table Pump pressure bar
The table applies to oil with a viscosity of 4.4 mm2/s (cSt) at a density of 830 kg/m 3..
Gph 9 11
kg/h kW Mcal/h kg/h kW Mcal/h
0,85 3,00 36 31 3,32 39 34
1,00 3,53 42 36 3,90 46 40
1,10 3,88 46 39 4,29 51 44
1,20 4,24 50 43 4,68 55 48
1,25 4,40 52 45 4,88 58 50
1,35 4,76 56 48 5,27 62 54
1,50 5,29 63 54 5,85 69 60
1,65 5,82 69 59 6,44 76 66
1,75 6,18 73 63 6,83 81 70
2,00 7,06 84 72 7,81 93 80
2,25 7,94 94 81 8,78 104 89
2,50 8,82 105 90 9,76 116 99
2,75 9,71 115 99 10,73 127 109
3,00 10,59 126 108 11,71 139 119
3,50 12,35 146 126 13,66 162 139
4,00 14,12 167 144 15,62 185 159
4,50 15,88 188 162 17,57 208 179
5,00 17,65 209 180 19,52 231 199
5,50 19,42 230 198 21,47 255 219
6,00 21,18 251 216 23,42 278 239
6,50 22,94 272 234 25,37 301 259
7,00 24,71 293 252 27,33 324 279
7,50 26,47 314 270 29,28 347 298
8,00 28,24 335 288 31,23 370 318
8,50 30,00 356 306 33,18 393 338
9,00 31,77 377 324 35,14 417 358
13
kg/h kW Mcal/h
3,61 43 37
4,24 50 43
4,67 55 48
5,09 60 52
5,30 63 54
5,73 68 58
6,36 75 65
7,00 83 71
7,42 88 76
8,49 101 86
9,55 113 97
10,61 126 108
11,67 138 119
12,73 151 130
14,85 176 151
16,97 201 173
19,10 226 195
21,22 251 216
23,34 277 238
25,46 302 260
27,58 327 281
29,70 352 303
31,83 377 324
33,95 403 346
36,07 428 368
38,19 453 389
15
kg/h kW Mcal/h
3,87 46 39
4,56 54 46
5,01 59 51
5,47 65 56
5,70 68 58
6,15 73 63
6,83 81 70
7,52 89 77
7,97 94 81
9,12 108 93
10,26 122 105
11,39 135 116
12,53 148 128
13,67 162 139
15,95 189 163
18,23 216 186
20,51 243 209
22,79 270 232
25,07 297 256
27,49 326 280
29,63 351 302
31,91 378 325
34,19 405 349
36,47 432 372
38,74 459 395
41,02 486 418

10 Bentone
The table applies to oil with a viscosity of 4.4 mm2/s (cSt) at a density of 830 kg/m 3..
Gph 17 19 21 23 25
kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h
1,00 4.85 57 49 5,13 61 52 5,40 64 55 5,65 67 58 5,89 70 60
1,10 534 63 54 5,64 67 57 5,93 70 60 6,21 74 63 6,47 77 66
1,20 5,82 69 59 6,16 73 63 6,47 77 66 6,77 80 69 7,06 84 72
1,25 6,07 72 62 6,41 76 65 6,74 80 69 7,05 84 72 7,35 87 75
1,35 6,55 78 67 6,93 82 71 7,28 86 74 7,62 90 78 7,94 94 81
1,50 7,27 86 74 7,69 91 78 8,08 96 82 8,46 100 86 8,82 105 90
1,65 8,01 95 82 8,47 100 86 8,90 105 91 9,31 110 95 9,71 115 99
1,75 8,49 101 87 8,98 106 92 9,44 112 96 9,88 117 101 10,30 122 105
2,00 9,71 115 99 10,26 122 105 10,79 128 110 11,29 134 115 11,77 140 120
2,25 10,92 130 111 11,55 137 118 12,14 144 124 12,70 151 129 13,25 157 135
2,50 12,13 144 124 12,83 152 131 13,49 160 138 14,12 167 144 14,72 175 150
2,75 13,35 158 136 14,11 167 144 14,84 176 151 15,53 184 158 16,19 192 165
3,00 14,56 173 148 15,39 182 157 16,18 192 165 16,93 201 173 17,65 209 180
3,50 16,99 201 173 17,96 213 183 18,89 224 193 19,77 234 202 20,61 244 210
4,00 19,42 230 198 20,53 243 209 21,59 256 220 22,59 268 230 23,56 279 240
4,50 21,84 259 223 23,09 274 235 24,28 288 248 25,41 301 259 26,49 314 270
5,00 24,27 288 247 25,65 304 262 26,98 320 275 28,24 335 288 29,44 349 300
5,50 26,70 317 272 28,22 335 288 29,68 352 303 31,06 368 317 32,38 384 330
6,00 29,13 345 292 30,79 365 314 32,38 384 330 33,89 402 346 35,33 419 360
6,50 31,55 374 322 33,35 395 340 35,07 416 358 36,70 435 374 38,26 454 390
7,00 33,98 403 347 35,92 426 366 37,77 448 385 39,53 469 403 41,21 489 420
7,50 36,41 432 371 38,49 456 392 40,47 480 413 42,35 504 434 44,16 524 450
8,00 38,80 460 396 41,05 487 419 43,17 512 440 45,18 536 461 47,10 559 480
8,50 41,26 489 421 43,62 517 445 45,87 544 468 48,00 569 489 50,05 594 510
9,00 43,69 518 446 46,18 548 471 48,57 576 495 50,83 603 518 52,99 628 540
9,50 46,11 547 470 48,75 578 497 51,26 608 523 53,65 636 547 55,93 663 570
10,00 47,11 559 480 51,32 609 523 53,96 640 550 56,47 670 576 58,88 698 600
11,00 53,40 633 545 56,45 669 576 59,36 704 605 62,12 737 633 64,77 768 660
12,00 58,25 691 594 61,58 730 628 64,76 768 660 67,77 804 691 70,66 838 721
14,00 67,96 806 693 71,84 852 733 75,55 896 770 79,09 938 806 82,43 978 841
16,00 77,67 921 792 82,11 974 837 86,34 1024 880 90,36 1072 921 94,20 1117 961
Pump pressure bar

11Bentone
6
7
8
10
1. Fan wheel
2. Test point
3. Protective cover, Hydraulics
Setting
4. Scale
5. Geider
6. Ignition electrodes
7. Brake plate
8. Oil pipes
9. Pump
10. Solenoid valve
11. Motor
12. Electric box (burner)
13. Blast tube
14. Burner flange
15. Solenoid valve with bloc
16. Air pressure switch
17. Oil pressure adjustment
18. Ignition transformer
19. AZL display for LMV automatic
control unit
20. Switch 0-1
21. Thermal overload protection
22. Contactor
23. Disconnector
24. Automatic control unit LMV
25. Fuse
2.9 Components
34
5
9
2
1

12 Bentone
11
12
13
14
15
3
16
18
19 20
21
22
23
25
24
17

13Bentone
165 105 71
3. General instructions
3.1 General rules
The installation of an oil burner should be carried out in accordance with
local regulations. The installer of the burner must therefore be aware of all
regulations relating to oil and combustion.
Only oil suitable for the burner should be used and then in combination with
a suitable oil filter before the oil pump of the burner.
If the burner is replacing an existing burner make sure that the oil filter
is replaced or cleaned. The installation must only be undertaken by
experienced personnel. Care should be taken by the installer to ensure
that no electrical cables or fuel/gas pipes are trapped or damaged during
installation or service/maintenance.
3.1.1 Installation and maintenance instructions
The maintenance instructions supplied with the burner must be kept at an
easily accessible location in the boiler room.
3.1.2 Instructions
It is the installer’s responsibility to instruct the user in detail in the functions of
the burner and the entire system.
3.1.3 Inspection and maintenance
The boiler/burner should be examined regularly for any signs of malfunction
or oil leakage. (See service schedule)
3.1.4 Start up
In order to obtain the correct setting, a flue gas analysis and temperature
measurement must be carried out. Otherwise, there is a risk of soot build
up, poor efficiency or condensation precipitation in the chimney. The system
must be fine-tuned at start-up. The temperature in the chimney must be at
least 60 °C at 0.5 m down in the chimney to prevent condensation.

14 Bentone
4. Installation
4.1 Handling and lifting instruktion
!Option
The lifting aid we used
here are available as
spare parts.

15Bentone
!Be sure to fill the
burner oil system
before starting it for
the first time.
!The oil filter must
be installed before
the burner’s oil
pump.
!If any electrical connection is used other than that recommended by Bentone,
there may be a danger of damage to property and personal injury.
4.2 Acceptance inspection
Make sure everything is delivered and the goods have not been damaged
during transit. If something is wrong with the delivery, report it to the supplier.
Transport damage must be reported to the shipping company.
4.3 Preparations for installation
Check that the burner’s dimensions and capacity range are suitable for the
boiler in question. The power data on the type sign refers to the burner’s min.
and max. power.
4.4 Distribution of oil
In order to achieve good reliability, it is important that the oil distribution
system is designed correctly.
Take the following into account:
• Selection of pipe diameter, pipe length and height difference; see Pump
instruction.
• Pipelines are to be laid with a minimal number of glands.
• The pipes are to be laid so that the oil supply hoses are not subjected
to tensile stresses or are excessively bent when the burner is swung
out or removed for service.
• The oil filter should be installed so that the filter cartridge can easily be
replaced or cleaned. Self-cleaning filters are recommended for oils of a
higher viscosity or oils that contain significant impurities.
• Oil-affected parts shall be selected in materials that are capable of
withstanding the medium’s physical properties.
• When installing oil hoses, check that the inlet and return hoses are
fitted to the appropriate connection on the oil pump. The hoses shall
be located so that they do not bend or become subject to tensile load.
• Bleed the oil system. The oil pump/oil preheater may be damaged if
run dry. The vacuum should not fall below 0.3 bar in the suction line
during start-up.
4.5 Electrical connection
• Before work on the electrical connection, the current should be
disconnected so that the installation is isolated.
• Electrical connection must be done in accordance with the applicable
regulations.
• Burners should be connected to an isolator switch.
• The connection should be made in accordance with the wiring
diagram.
• Fuse rating is as required

16 Bentone
165 105 72
A A A
A
!If the flame tube must be installed from the inside
of the boiler, this means that the boiler must be
opened or have a spectacle flange that is designed
so that it can be reconnected with the flame tube
mounted.
4.6 Mounting the burner on the boiler
1. Separate fan housing and fixing flange.
2. Remove brake plate from nozzle line.
3. Install selected nozzle, (see Technical data).
4. Install brake plate on the nozzle line.
5. Remove flame tube from fixing flange.
6. Install fixing flange with gasket on boiler.
7. Install the flame tube on the fixing flange. Make sure that the holes in
the front edge of the flame tube are pointing down (not on all flame
tubes), allows any drops of oil to run out.
8. Insulate between burner and boiler door to reduce radiated heat.
9. Install fan housing on fixing flange and lock with nuts.
10. Connect the oil pipes to the pump, (see chapter Service).
11. Connect the burner electrically, (see chapter Service),
4.7 Check oil line seals
Once the burner has been installed and commissioned, the seals of the
various coupling elements should be checked (A).
In the event of a leak, it is usually sufficient to tighten the coupling element.

17Bentone
165 105 70-2
4.8 Adjusting the air setting
Operate the burner as described in the “Manual output”
chapter of the LMV section.
Step 1:
1. Set the output to low load.
2. Remove the guard (D) from the hydraulic adjuster.
3. Loosen the screw (A), turn the damper to the
desired position, and retighten the screw (A).
C
A
B
D
Step 2:
4. Set the output to high load.
5. Use a hex key to screw the socket (B) in to
decrease or out to increase
6. The damper position can be read on the damper
scale (C).
7. Check/adjust combustion.
8. Reset the burner to automatic operation.
Excess air flue gases Max. % CO2
% O2% CO2Lambda 1.2
3–5 ≈12.5 15.4
Recommended excess air

18 Bentone
5. Setting the burner
5.1 Setting the combustion assembly
X
165 105 73-3
It may sometimes be necessary to adjust the combustion
assembly, i.e. the position of the brake plate in the burner tube.
5.1.1 Setting the combustion assembly
The burner is equipped with a lever that changes the position
of the brake plate in the combustion head. This is used to set
the correct pressure drop across the combustion assembly
and thereby obtain good combustion without ripples. Make the
adjustment by turning screw X.
The best position is, among other things, dependent on the input
power and overpressure in the boiler.
A general rule of thumb is that the smaller the capacity, the smaller the gap
should be between the brake plate and the combustion assembly.
The position of the brake plate also has an impact on the quantity of air
supplied for combustion.
This means that once the brake plate has been adjusted, the combustion
should be checked and, if necessary, the setting of the air damper adjusted
to obtain good combustion.
A left turn opens the brake plate, providing a lower pressure drop and more
air to the combustion process.
A right turn closes the brake plate, providing a higher pressure drop and less
air to the combustion process.
Refi t protective cover.

19Bentone
5.2 Setting the air pressure switch
4.7 Setting the air pressure switch
The air pressure switch must block the burner if the amount of air for
combustion becomes too low. The air pressure switch must be set so
that in the event of a lack of air supply at the burner’s max. or min.
capacity reacts before the monitored pressure drops so much that
poor combustion occurs.
1. Remove protective cover.
2. Start the burner.
3. Carefully turn the scale on the air pressure switch clockwise
until the air pressure switch stops the burner.
4. Measure and note the lowest air pressure in the entire work
area.
5. Set the air pressure switch to about 10-15% lower than the
lowest noted pressure.
6. Test run the burner and check the function in the entire work
area.
7. Refi t protective cover.
!Be careful when adjusting the air pressure switch; it
contains a live component.

20 Bentone
5.3 Pressure switch for min. oil
pressure
The burner control unit has a connection for a pressure switch for min. oil
pressure. If the facility regulations do not require this switch, a jumper should
be fitted between terminals 12 and 13 of the terminal block to close the
circuit and enable the burner to be started.
5.4 Pressure switch for max. oil
pressure
The burner control unit has a connection for a pressure switch for max. oil
pressure. If the facility regulations do not require this switch, a jumper should
be fitted between terminals 2 and 3 of terminal block X5-02 in the automatic
control unit to close the circuit and enable the burner to be started.
5.5 Calculate prepurge time,
Industrial applications
Prepurge time can be set on control unit LMV with parameter 265.
Formula symbol Description Example values
V Volume fire box [m3] 4.18 m3
Q Burner output [kW] 418 kW
T Prepurge time [s]
Industrial applications according to EN 746.
The prepurge time must correspond to at least 5 complete
air circulations in the fire box and adapted compartments.
T = V · 5 T=4.18 m3· 5 = 150 s
Q · 1.2 / 3600 418 kW · 1.2 / 3600
Calculate prepurge time using the following formula: