Bentone B 45 A Technical specifications

Providing sustainable energy solutions worldwide
Installation- and maintenance instruction
B 45 A
LMO24.255C2E
AS 67 CK
178 027 55-5 CR00619 2023-03-29
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
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QR-koden.
3. Skriv in brännarens
artikelnummer som  nns på
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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:
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-da
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-fr
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2. www.bentone.com\
download ou scannez le
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3. Geben Sie die
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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 45 A........................................................................ 6
2.2 Burner installation ........................................................................ 6
2.3 Workingeld.................................................................................. 7
2.4 Settingfornozzleassemblyandairdamper ......................... 7
2.6 Settingofignitionelectrodesandbrakeplate ....................... 8
2.7 Nozzleandpumppressure......................................................... 8
2.5 Technicalspecication ................................................................. 8
2.8 Nozzle table.................................................................................... 9
2.9 Components................................................................................. 11
3. Electric equipment.............................................................12
3.1 Safety system .............................................................................. 12
3.2 Wiringdiagram.......................................................................... 12
3.3 Function ........................................................................................ 13
3.4 Colourcodes................................................................................ 14
3.5 Faultcodes ................................................................................... 14
4. Installation..........................................................................15
4.1 General instructions................................................................... 15
4.2 Inspectionandmaintenance.................................................... 15
4.3 Start-up ......................................................................................... 15
4.4 Preparing for installation........................................................... 15
4.5 Oildistribution............................................................................. 15
4.6 Electrical connection .................................................................. 16
4.7 Handlingandliftinginstruktion ............................................... 17
5. Mounting ............................................................................18
5.1 Check oil line seals...................................................................... 18
5.2 Example of Basic settings.......................................................... 19
5.3 Air setting ..................................................................................... 20
5.4 Brakeplateadjustment ............................................................. 20
6. Pump ..................................................................................21
6.1 SUNTEC AS .................................................................................. 21
7. Service .................................................................................27
7.1 BurnerServiceSchedule,Oil .................................................... 27
7.2 Component replacement intervals.......................................... 27
7.3 Combustiondevice .................................................................... 28
7.4 Airdamper................................................................................... 29
7.5 Fan ................................................................................................. 30
7.6 Replace oil pump ........................................................................31
7.7 Tightnesscheckofsolenoidvalves ......................................... 32
7.8 Vibrations...................................................................................... 33
7.9 Replacement of electrical components.................................. 34
8. Fault Location.....................................................................35
8.1 Burner will not start.................................................................... 35
8.2 Burner will not start after normal use .................................... 35
8.3 Delayedignition .......................................................................... 36
8.4 Noise in pump ............................................................................. 36
8.5 Pump pressure ............................................................................ 37
9. Logofuegasanalysis.....................................................38

4Bentone
165 105 01-2 2021-12-07
1. General Information
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
 re 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 current mains electricity regulations and in a
professional manner.
• Make sure that the burner is suitable for the application (see Technical
Data).
• All components must be installed without being bent, twisted or
subjected to mechanical or thermal forces that affect components.

5Bentone
• Care must be taken by the installer to ensure that no electrical cables
or fuel lines are pinched or otherwise damaged during installation or
service.
• Flame tubes, fan wheels and air dampers, for example, may contain
sharp edges.
- before  rst 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.
•  tting and installation work has been completed and approved.
• electrical installation has been correctly performed.
•  ue 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
165 205 10-3
2. Technical data
The burner is intended for:
• Operation in installations according to EN 303 and EN 267.
When operating with a hot air boiler, the LMO24.255 or LMO44.255 control unit must be used.
Fuels:
• Fuel oil according to DIN 51603-1.
• Fuel oil A Bio 10 according to DIN 51603-6.
2.1 Dimensions B 45 A
* Min. recommended distance to oor.
A Ø B Ø C D E F G H *I
240/340 159 134 472 255 110 219 225 200
d1
d2
d3
d1 d2 d3
ø (135) 165 14 ø (200) 224-260
2.2 Burner installation
2.2.1 Hole patten
Make sure the hole pattern on the boiler is designed for burner ange.
D
øB
E
*I
A
øC
F
G H
160303-652

7Bentone
2.3 Working eld
2.4 Setting for nozzle assembly and air damper
!Do not exceed working
eld.
-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
8.1-44.0 kg/h
96-520 kW
160303-649
0
10
20
30
40
50
50 100 150 200 250 300 350 400 450 500 550
160303-203-2
kW
Air settings
Nozzle assembly
Scale
Burner output

8Bentone
2.6 Setting of ignition electrodes and brake
plate
a
b
c
Measurements according to EN 15036-1:2006
Alt.1 The noise level of the burner can be reduced by equipping the burner with
silencer. Installation must be done so it does not prevent air supply to the
burner.
Alt.2 The burner’s noise level can be reduced by connecting the burner’s air
intake to the air duct that opens into an appropriate location. Installation
must be done so it does not prevent air supply to the burner.
!*NB It is important that the spark
does not strike against the brake
plate or nozzle.
a b c
2.5-3.5 7.0-9.0 1.0-2.0
Nozzle: 45° Solid/semisolid
60° Solid/semisolid
80° Solid/semisolid
Pump pressure: 10 bar (8-25 bar) depending on pump model
2.7 Nozzle and pump pressure
Due to different furnace geometries and capacities, it is not possible to
recommend a nozzle model.
2.5 Technical specication
B 45 A
Main supply 230V, 1~, 4.7A, 50Hz, IP20
Max fuse rating 10A
NOX-class 3
Noise level 87dBA

9Bentone
2.8 Nozzle table
10 11 12 13
Gph kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h
1,00 3,72 44 38 3,90 46 40 4,08 48 42 4,24 50 43
1,10 4,09 48 42 4,29 51 44 4,48 53 46 4,67 55 48
1,20 4,47 53 46 4,68 55 48 4,89 58 50 5,09 60 52
1,25 4,65 55 47 4,88 58 50 5,10 60 52 5,30 63 54
1,35 5,02 59 51 5,27 62 54 5,50 65 56 5,73 68 58
1,50 5,58 66 57 5,85 69 60 6,11 72 62 6,36 75 65
1,65 6,14 73 63 6,44 76 66 6,73 80 69 7,00 83 71
1,75 6,51 77 66 6,83 81 70 7,14 85 73 7,42 88 76
2,00 7,45 88 76 7,81 93 80 8,16 97 83 8,49 101 87
2,25 8,38 99 85 8,78 104 90 9,18 109 94 9,55 113 97
2,50 9,31 110 95 9,76 116 100 10,19 121 104 10,61 126 108
2,75 10,24 121 104 10,73 127 109 11,21 133 114 11,67 138 119
3,00 11,16 132 114 11,71 139 119 12,23 145 125 12,73 151 130
3,50 13,03 154 133 13,66 162 139 14,27 169 146 14,85 176 151
4,00 14,89 176 152 15,62 185 159 16,31 193 166 16,97 201 173
4,50 16,75 199 171 17,57 208 179 18,35 218 187 19,10 226 195
5,00 18,62 220 190 19,52 231 199 20,39 242 208 21,22 252 216
5,50 20,48 243 209 21,47 255 219 22,43 266 229 23,34 277 238
6,00 22,34 265 228 23,42 278 239 24,47 290 250 24,46 302 260
6,50 24,20 287 247 25,37 301 259 26,51 314 270 27,58 327 281
7,00 26,06 309 266 27,33 324 279 28,55 339 291 29,70 352 303
7,50 27,92 331 285 29,28 347 299 30,59 363 312 31,83 377 325
8,00 29,79 353 304 31,23 370 318 32,63 387 333 33,95 403 346
8,50 31,65 375 323 33,18 393 338 34,66 411 353 36,07 428 368
9,00 33,59 398 343 35,14 417 358 63,71 435 374 38,19 453 389
9,50 35,37 419 361 37,09 440 378 38,74 549 395 40,31 478 411
10,00 37,23 441 380 39,04 463 398 40,78 484 416 42,44 503 433
11,00 40,96 486 418 42,94 509 438 44,86 532 457 46,68 554 476
12,00 44,68 530 456 46,85 556 478 48,94 580 499 50,92 604 519
14,00 52,12 618 531 54,65 648 557 57,10 677 582 59,41 705 606
16,00 59,57 706 607 62,46 741 637 65,26 774 666 67,90 805 692
18,00 67,02 795 683 70,27 833 717 73,41 871 749 76,39 906 779
20,00 74,47 883 759 78,08 926 796 81,57 967 832 84,87 1007 865
22,00 81,91 971 835 85,89 1019 876 89,73 1064 915 93,36 1107 952
24,00 89,36 1060 911 93,70 1111 956 97,88 1161 998 101,85 1208 1039
26,00 96,81 1148 987 101,50 1204 1035 106,04 1258 1081 110,33 1308 1168
Pump pressure bar
The table applies to oil with a viscosity of 4.4 mm2/s (cSt) at a density of 830 kg/m3..

10 Bentone
14 15 16 17
Gph kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h
1,00 4,40 52 45 4,56 54 46 4,71 56 48 4,85 57 49
1,10 4,84 57 49 5,01 59 51 5,18 61 53 5,34 63 54
1,20 5,29 63 54 5,47 65 56 5,65 67 58 5,82 69 59
1,25 5,51 65 56 5,70 68 58 5,89 70 60 6,07 72 62
1,35 5,95 70 61 6,15 73 63 6,36 75 65 6,55 78 67
1,50 6,60 78 67 6,83 81 70 7,06 84 72 7,27 86 74
1,65 7,27 86 74 7,52 89 77 7,77 92 79 8,01 95 82
1,75 7,71 91 79 7,97 95 81 8,24 98 84 8,49 101 87
2,00 8,81 104 90 9,12 108 93 9,42 112 96 9,71 115 99
2,25 9,91 118 101 10,26 122 105 10,60 126 108 10,92 130 111
2,50 11,01 131 112 11,39 135 116 11,77 140 120 12,13 144 124
2,75 12,11 144 123 12,53 149 128 12,95 154 132 13,35 158 136
3,00 13,21 157 135 13,67 162 139 14,13 168 144 14,56 173 148
3,50 15,42 183 157 15,95 189 163 16,49 196 168 16,99 201 173
4,00 17,62 209 180 18,23 216 186 18,84 223 192 19,42 230 198
4,50 19,82 235 202 20,51 243 209 21,20 251 216 21,84 259 223
5,00 22,03 261 225 22,79 270 232 23,55 279 240 24,27 288 247
5,50 24,23 287 247 25,07 297 256 25,91 307 264 26,70 317 272
6,00 26,43 313 270 27,49 326 280 28,27 335 288 29,13 345 297
6,50 28,63 340 292 29,63 351 302 30,62 363 312 31,55 374 322
7,00 30,84 366 314 31,91 378 325 32,98 391 336 33,98 403 374
7,50 33,04 392 337 34,19 405 349 35,33 419 360 36,41 432 371
8,00 35,25 418 359 36,47 433 372 37,69 447 384 38,80 460 396
8,50 37,45 444 382 38,74 459 395 40,04 475 408 41,26 489 421
9,00 39,65 470 404 41,02 486 418 42,40 503 432 43,69 518 446
9,50 41,85 496 427 43,30 514 442 44,75 531 456 46,11 547 470
10,00 44,06 523 449 45,58 541 465 47,11 559 480 47,11 559 480
11,00 48,46 575 494 50,14 595 511 51,82 615 528 53,40 633 545
12,00 52,87 627 539 54,70 648 558 56,53 670 576 58,25 691 594
14,00 62,68 732 629 63,81 757 651 65,95 778 669 67,96 806 693
16,00 70,49 836 719 72,93 865 744 75,38 894 769 77,67 921 792
18,00 79,30 940 809 82,05 973 837 84,80 1006 865 87,38 1036 891
20,00 88,11 1045 899 91,17 1081 930 94,22 1117 961 97,09 1151 990
22,00 96,92 1149 988 100 1189 1023 104 1229 1057 107 1267 1089
24,00 106 1254 1078 109 1297 1116 113 1341 1153 116 1382 1188
26,00 115 1359 1168 119 1406 1209 122 1453 1249 126 1497 1287
Pump pressure bar
The table applies to oil with a viscosity of 4.4 mm2/s (cSt) at a density of 830 kg/m3..

11Bentone
2.9 Components
1. Brake plate
2. Nozzle
3. Ignition electrodes
4. Ignition transformer
5. Flame detector
6. Contactor
7. Burner control
8. Cover, inspection glass
9. Fan wheel
10. Motor
11. Switch I-0
12. Indicator lamp
13. Reset button
14. Nozzle assembly adjustment
15. Air adjustment
16. Flame tube
17. Air intake
18. Safety valve
19. Solenoid valve
20. Pump
21. Air damper
2
4
10
1
3
56
7
8
9
160303-650
13 14 15
21
17
16
20
19
11
12
18
160303-651

12 Bentone
3. Electric equipment
3.1 Safety system
The safety system (safety switch for hatches, doors, water level, pressure,
temperature and other safety devices) must be installed in the safety circuit in
accordance with current regulations for the system.
The cables of the safety system must be separated so that the outgoing signal
is not placed in the same cable as the incoming signal.
3.2 Wiring diagram
165 305 30-2 2023-01-23
E106366
Bn Brown
Bu Blue
Gn Green
Ye Yellow
Gn/Ye Green/Yellow
Bk Black
Gy Grey
Rd Red
Wh White
Og Orange
Vt Violet

13Bentone
3.3 Function
1 Switch on operating switch and twin thermostat
The burner motor starts, an ignition spark is formed, the prepurge goes
on till the prepurge period expires and the solenoid valve opens.
2. Solenoid valve opens
Oil mist is formed and ignited. The photocell indicates a ame. The
ignition spark goes out after ame indication (See Technical data oil
burner control).
3.
a
b
The safety time expires
If no ame is established before this time limit the control cuts out.
If for some reasons the ame disappears after this time limit, the burner
will make an attempt to re-start.
4-5 Operating position
If the burner operation is interrupted by means of the main switch or the
thermostat, a new start takes place when the conditions in accordance
with point 1 are fullled.
The oil burner control cuts out
A red lamp in the control is lit. Press the reset button and the burner
re-starts.
A1 Burner control
B1 Flame detector
F1 Fuse
H1 Alarm lamp
H3 Alarm signal 230V
K1 Contactor + Overload protection
M1 Motor
P1 Time meter (optional)
S1 Operating switch
S3 Regulating thermostat
S4 Temperature/Pressure limiter
S5 Safety switch for hinged door
S7 Main switch
T1 Ignition transformer
X1 Connection terminal board
X2 Earth terminal
X3 Plug-in contact ”Euro”, burner
X4 Plug-in contact ”Euro”, boiler
Y1 Solenoid valve
Y1S Safety valve
3.3.1 Technical data
LMO14.113... LMO24.255...
15 s 25 s
16 s 26 s
3 s 5 s
< 10 s < 5 s
< 1 s < 1 s
< 1 s < 1 s
-5 - +60°C -20 - +60°C
45 µA dc 45 µA dc
5.5 µA dc 5.5 µA dc
160303-333
Preiginition time
Prepurge time
Postignition time
Safety lockout time
Reset time after lockout
Reaction time on  ame failure
Ambient temperature
Min detector current required (with  ame)
Max perm. detector current (without  ame)
Svart
-
+
QRB
12
11
Black Schwarz Noir
A1
DC μA
!Mains connection and fuse
in accordance with local
regulations.
3.2.1 Components

14 Bentone
3.4 Colour codes
When the burner starts, three signal lights in the reset switch indicate the
normal sequence, as well as provide indication if something abnormal is
happening in accordance with the following table:
Preheater in operation Solid yellow
Ignition switched on Flashing yellow
Normal operation Solid green
Operation, poor ame signal Flashing green
Undervoltage Flashing yellow-red
Fault, alarm Solid red
False light Flashing red-green
Communication mode Fluttering red
3.5 Fault codes
When the red light for a blocked relay box comes on, you can get information
about what has caused the problem by pressing and holding the reset button
for 3 seconds.
The number of ashes below is repeated with a pause in between.
2 ashes No ame signal when safety time expires
4 ashes False light during start
7 ashes 3 x Losses of ame during operation
8 ashes Time-out for preheater *
10 ashes Incorrect wiring, internal fault or simultaneous occurrence of
two faults
* In order for this fault code to occur, the preheater shall not reach its cut-off
temperature within 10 mins. from switch on.
To return to normal operation: Press the reset button for 1 second.
If the reset button is instead kept pressed a second time for at least 3 seconds,
you can, via an interface, obtain the corresponding information on a computer
or ue gas analyser.
To return to normal operation: Press the reset button for 1 second.

15Bentone
165 205 19-3
4. Installation
4.1 General instructions
Oil burners must be installed in accordance with local regulations. The installer
must therefore be knowledgeable of the regulations pertaining to oil and
combustion.
Only oil suitable for the burner must be used and then in combination with a
suitable oil lter installed before the burner’s oil pump.
If the burner is replacing an existing burner, ensure that the oil lter is
replaced or cleaned. Installation may only be performed by qualied
personnel.
Care should be taken by the installer to ensure that electrical cables and oil
lines are not pinched or otherwise damaged during installation or servicing.
4.2 Inspection and maintenance
The system must be maintained at the interval specied in the service
schedule. If the burner is in a dirty environment, service should be done at
more frequent intervals.
4.3 Start-up
In order to obtain the correct setting, a ue gas analysis and temperature
measurement must be carried out. Otherwise, there is a risk of soot build up,
poor eciency or condensation in the chimney. The system must be ne-tuned
at start-up. The temperature in the chimney at a depth of 0.5 m must be at
least 60 °C to prevent condensation.
4.4 Preparing for installation
Check that the burner’s dimensions and capacity range are suitable for the
relevant boiler. The power data on the rating plate refers to the burner’s
minimum and maximum power.
4.5 Oil distribution
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 the fewest possible number of glands.
• The pipes are to be laid so that the oil supply hoses are not subjected
to tensile stresses or become excessively bent when the burner is
swung out or removed for servicing.
• The oil lter should be installed so that the lter cartridge can easily
be replaced or cleaned.
• Parts in contact with oil must 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
tted to the appropriate connection on the oil pump. The hoses must
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 in the suction line should not fall below 0.3 bar
during start-up.
!Besuretollthe
burneroilsystem
before starting it for the
rsttime.
!Theoilltermustbe
installed before the
burner’s oil pump.

16 Bentone
!Ifanyelectricalconnectionisusedotherthanthat
recommendedbyEnertech,theremaybeariskofdamageto
propertyandpersonalinjury.
4.6 Electrical connection
• Before work on the electrical connection, the current must be
disconnected so that the installation is isolated.
• Electrical connection must be done in accordance with the applicable
regulations.
• Burners must be connected to an all-pole switch.
• Connection must conform to the wiring diagram.
• Use appropriately sized fuses.

17Bentone
165 105 65-2
4.7 Handling and lifting instruktion
iThe lifting aid are available as
accessories.

18 Bentone
165 105 42-2
5. Mounting
1. Remove fan housing from xing ange.
2. Remove the brake plate from the oil line.
3. Install the selected nozzles, (see Technical data).
4. Install the brake plate on the oil line.
5. Remove the ame tube from the ange.
6. Install the ange with gasket on the boiler.
7. Install ame tube, be sure to install the drainage hole
downwards (not available on all ame tubes) so that any
oil spills can drain out.
8. Insulate between ame tube and boiler door for reduced
heat radiation.
9. Install the fan housing on the ange and lock with nuts.
10. Connect oil lines to the pump.
11. Connect the burner electrically.
5.1 Check oil line seals
When the burner has been installed and put into operation, the
tightness of the various coupling elements should be checked, in
case of leakage - retighten the coupling elements.

19Bentone
165 205 13
5.2 Example of Basic settings
Basic settings should only be seen as setting values to get burner to start.
Once the burner has started and established ame, it is necessary to adjust
the settings so that they are adapted to the installation and the fuel used.
B 45 A
Burner output: 370 kW
Estimated nozzle output: 370 / 11.86* =31.2 kg/h
(* Calorc value Fuel oil =11.86 kWh/kg)
This provides the following nozzle according to the nozzle table, (see Technical
data).
Nozzle: 8.00 Gph
Pump pressure: 11.0 bar
Setting values for 370 kW according to basic setting diagram, (see Technical
data).
Air setting: = 7.0
Insert setting: = 20.0

20 Bentone
165 105 43-2
5.3 Air setting
Adjust the air setting by starting the burner and loosening the screw (E) that
locks the air damper adjustment knob. Adjust the position of the air damper
to the desired air quantity (clockwise adjustment reduces air quantity and
counter-clockwise increases air quantity) and lock the damper position with
screw (E). The damper position can be read on the damper scale (F). Check air
settings with  ue gas analysis.
5.4 Brake plate adjustment
The position of the brake plate must be adjusted to achieve the most favorable
pressure drop across the brake plate. Loosen screw (C) and adjust the position
of the brake plate with screw (B) for good combustion.
Excess air fl ue gases Max. % CO2
% O2% CO2Lambda 1.2
3–5 ≈12.5 15.4
Recommended excess air
C
B
E
F