Bentone BG 400LN Technical specifications

Providing sustainable energy solutions worldwide
Installation- and maintenance instruction
BG 400 LN
LME22.233C2
MB-VEF 412
Translation of the original instructions.
CR00238 178 140 74-1 2022-03-31

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  nns 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  ndes
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
1.3 What to do if you smell gas......................................................... 5
2. Technical data.......................................................................6
2.1 Dimensions BG 400 LN................................................................ 6
2.2 Capacity range............................................................................... 7
2.3 Gas categories, approved gases................................................ 7
2.4 ElectricSpecicationEN60335-2-102...................................... 7
2.6 Setting for insert and air damper ............................................. 8
2.5 Workingeld.................................................................................. 8
2.7 Components................................................................................... 9
3. Installation..........................................................................10
3.1 General instructions................................................................... 10
3.2 Instructions .................................................................................. 10
3.3 Inspection and maintenance.................................................... 10
3.4 Preparation for assembly ......................................................... 10
3.5 Gas supply .................................................................................... 10
3.6 Electric connection ..................................................................... 10
3.7 Mounting the burner on boiler................................................ 11
3.8 Gas nozzle..................................................................................... 12
3.9 De-aerating................................................................................... 12
3.10 Leakage control........................................................................... 12
3.11 Electric function test................................................................... 13
4. Burner settings ..................................................................14
4.1 Air settings ................................................................................... 14
4.2 Combustion device ..................................................................... 14
4.3 Start-up ......................................................................................... 14
4.4 Adjustment .................................................................................. 14
4.5 Recommended excess air when using default setting ....... 14
4.6 Setting Damper motor, Modulating operation .................... 15
4.7 Setting the air pressure switch ................................................ 16
4.8 Setting the gas pressure switch min....................................... 17
4.9 Calculationofgasow.............................................................. 18
4.10 Skeleton diagrams ..................................................................... 19
5. Gas valve ............................................................................20
5.1 MultiBlocMB-VEF407-412........................................................ 20
6. Service .................................................................................23
6.1 Combustion device ..................................................................... 23
6.2 Air damper.................................................................................... 24
6.3 Replacing damper motor .......................................................... 25
6.4 Fanwheelandmotor ................................................................. 26
6.5 Replacement of electrical components.................................. 27
6.6 Flamemonitoringandionizationcurrentcheck .................. 28
6.7 Burner Service Schedule, Gas .................................................. 30
6.8 Component replacement intervals.......................................... 30
7. Electric equipment.............................................................31
7.1 Safety system .............................................................................. 31
7.2 Wiring diagram LME................................................................... 32
7.3 FunctionLME... ............................................................................ 33
7.4 Control program at faults.......................................................... 34
8. Handing over of the installation ......................................36
9. Troubleshooting.................................................................37
10. Service- and inspection protocol .....................................40

4Bentone
1. General Information
172 515 01-2 2021-10-05
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 should 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 high voltage regulations and in a
professional manner.
• 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.
• Sharp edges can occur on, for example:  ame tube, fan wheel
and air damper.
• The gas outlet from the pressure regulator must be
con gured in accordance with applicable regulations and lead
to a safe area.
- 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.
• 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.
1.3 What to do if you smell gas
• Turn off the fuel supply.
• Turn off the equipment and remove the boiler from operation.
• Open windows and doors.
• Prevent open  ames or sparking, e.g. do not turn lights on or
off, do not use any electrical appliances or mobile phones.
• Evacuate the building.
• Notify the installer or gas supplier of the problem so that it
can be recti ed.

6Bentone
172 535 08 2021-10-04
K L M
BG 400 12 Ø 172-240 ø110
2. Technical data
The burner is intended for:
• operation with boiler according to EN 303 and EN 676.
Fuels:
• Natural gas H, E, L, LL.
2.1 Dimensions BG 400 LN
* The above dimensions are max. measurements. Depending on the
components used, the measurements may vary.
** Min. recommended distance to  oor.
2.1.1 Measurements for connection to boiler
Type Length of burner
tube
Flange
measure A
Burner tube
measure B
Burner tube
measure C
BG 400 230 217 ø100 ø110
D E F G H I J
BG 400 399 249 *401 *455 193 211 **200
K
L
M
H I
*G
160303-421
A D
øB
E
*F
øC
**J
160303-422

7Bentone
Measurements according to EN 3746: 2010
Alt.1 The sound 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.
2.2 Capacity range
2.3 Gas categories, approved gases
Only dry gas is permitted for use.
2.4 Electric Speci cation EN 60335-2-102
Capacity
kW
Gas quantity at
min. power
Nm3/h
Gas quantity at
max. power
Nm3/h
Max. connection
pressure
mbar
Min.
connection
pressure mbar
See data plate.
Gas quantity and capacity vary according to grade of gas and connection pressure.
BG 400 LN
G20 56-171 5.9 18.0 360
G25 57-144 7.0 18.0 360
160303-461
Type BG 400 LN
Electrical data, Control power 230V, 1~, 3.0A, 50Hz, IP20
Electrical data, Motor -
Max fuse rating 10A
Noise level 82dBA
Max operating current, see data plate.
Category Country of destination Supply pressure
I2R AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR,
HR, HU, IE, IS, IT, LT, LU, LV, MK, MT, NL, NO, PL, PT, RO,
RS, SE, SI, SK, TR
25 mbar
I2ELL DE 25 mbar
I2H AT, BG, CH, CZ, DK, EE, ES, FI, GB, GR, HU, IE, IS, IT, LT,
LV, NO, PT, RO, SE, SI, SK, TR 25 mbar
I2Er FR 25 mbar
I2E LU, PL 25 mbar
I2E(R)B BE 25 mbar
I2L NL 25 mbar
160303-420-1

8Bentone
!Do not exceed
working eld.
-1
0
1
2
3
4
5
6
7
8
50 60 70 80 90 100 110 120 130 140 150 160 170 180
mbar
kW
G20 H, E
G25 L, LL
160303-415
56-171 kW
57-144 kW
2.6 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 ame, it is
necessary to adjust the settings so that they are adapted to the
installation and the fuel used.
2.5 Working eld
0
10
20
30
40
50
60
70
80
90
55 65 75 85 95 105 115 125 135 145 155 165
160303-555
kW
Air settings
Scale
Burner output

9Bentone
2.7 Components
1. Switch 0-I
2. Power switch, man-aut
3. Cover, inspection glass
4. Reset button
5. Air pressure switch
6. Fixing ange
7. Flame tube
8. Gas nozzle
9. Fan wheel
10. Gas valve MultiBloc
11. Air intake
12. Connecting pipe
13. Cover cap (Fan housing)
14. Damper motor
15. Impulse pipe
16. Gas nozzle assembly
17. Transformer
18. Electric panel
19. Gas burner control
20. Motor
21. Electrical connection
22. Indicating lamp, 0-I
23. Connection, power
control
24. Change-over switch,
increase-decrease
25. Fan housing
160303-423
9
160303-424
1 3 54
1110
6 7 8
12
2
1413 15
2220
19
18
17
21 2423 25
16

10 Bentone
172 535 09
3. Installation
3.1 General instructions
Installation must be carried out in accordance with current regulations
and instructions.
The supplier/installer of the facility is obliged to familiarize himself
with all regulations so that the installation meets the requirements of
the local authorities.
Installation, assembly and adjustment must be performed to obtain
the best possible function. Only gas intended for the gas burner may
be used.
3.2 Instructions
It is the installer’s responsibility to instruct the user in detail in the
functions of the gas burner and the entire plant.
3.3 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.
3.4 Preparation for assembly
Check that the burner’s dimensions and capacity range match the
current boiler. The power information on the type plate refers to the
burner model’s min. and max. effect.
3.5 Gas supply
In order to obtain good operational safety, it is important that the
installation of the gas distribution system is carried out correctly,
considering the following:
• Check that the burner is approved for the gas quality of the
installation.
• Check that the burner gas components are approved for the
specied gas pressure, see type plate.
• Installation must be carried out in accordance with current
standards.
• Pipe lines should be assembled so that service can easily be
performed on the boiler and burner.
• Pipe lines should be assembled so that any contaminants do
not come into contact with the gas components.
3.6 Electric connection
• Before work on the electrical connection, the current must be
disconnected so that the installation is isolated.
• Connection must be done in accordance with the applicable
regulations.
• Connection must conform to the wiring diagram.
!If any electrical connection other than that recommended
by Enertech is used, there is a risk of property damage
and personal injury.

11Bentone
3.7 Mounting the burner on boiler
The burner is mounted on boiler using four bolts according to the hole
pattern on the  xing  ange.
To facilitate installation, it is possible to remove the fan housing from
the  xing  ange.
1. Disconnect power cables to gas valve.
2. Remove cover on fan housing.
3. Disconnect ignition and ionization cables from gas nozzle.
4. Loosen impulse pipes between gas valve and fan housing.
5. Loosen gas valve (if necessary).
6. Divide fan housing from  xing  ange.
7. Check that the ignition and ionization electrodes are set
correctly, see chapther Gas nozzle.
8. Mount  xing  ange with enclosed gasket on the boiler.
9. When the  xing  ange is mounted to the boiler, it is easy to
reassemble the fan housing. Mount the burner in reverse
order.
!Before obtaining access to terminals,
all supply circuits must be disconnected.
160303-444
172 535 15

12 Bentone
3.8 Gas nozzle
Check that the ignition and ionization electrodes are set correctly
before assembly on the boiler.
3.9 De-aerating
De-aerating the gas line by closing the tap for the gas connection and
unscrewing the screw on the measuring nipple for the connection
pressure. Connect a plastic hose, open the tap and discharge the gas
to a safe place. When de-aerating is complete, do not forget to screw
the screw back into the measuring nipple.
3.10 Leakage control
When testing for leaks, the solenoid valve must be closed. Connect a
pressure gauge to the test nipple ”Pa”, see  gure. The test pressure
in the system must not be higher than max. connection pressure, see
type plate. If leaks are found during measurement, locate the leaky
spot using soapy water or leak detection spray. After sealing, the
system is tested for leaks again.
!Check the gas tightness.
Pa
160303-425
12-14
4-5
2
160303-426

13Bentone
3.11 Electric function test
When connecting from the mains, make sure that phase and neutral
are not reversed. The gas tap must be closed. Temporarily link the gas
pressure switch so that it does not block.
The prepurging time (30-35 sec.) begins after switching on the main
switch and setting the maximum and control thermostats. After this
time, the preignition comes into operation (0.5-2.5 sec. depending on
the design of the gas burner control).
The ignition spark must be able to operate  awlessly at the amount
of air required for combustion. The gas valve is energized and opens.
After the end of the safety period (2-3 sec.), the gas burner control
goes into blockage. Solenoid valve and motor become de-energized.
Remove the link after testing.

14 Bentone
172 535 10
4. Burner settings
4.1 Air settings
Before commissioning, adjust the burner air damper setting
according to the diagram Basic setting, see Technical data. After the
rst start, the burner must be adjusted again for good function and
combustion.
4.2 Combustion device
The combustion device is permanently mounted and there are no
setting options other than adjustment of ignition and ionization
electrodes.
4.3 Start-up
After the burner is mounted on the boiler, the electrical connection
is complete, the gas piping is seal tested and de-aerated, and the
electrical function test has been carried out, the burner is ready for
start-up.
Read the sections on setting of the gas valve, damper motor and
combustion device before starting.
Open the ball valve and switch on the main switch, start the burner
and start adjusting the system.
4.4 Adjustment
Check the combustion using ue gas analysis instruments. Set the
burner to about 20% excess air and check the ue gas temperature.
Calculate the combustion eciency. Also check the current amount
of gas on the gas meter so that the correct applied power is
achieved.
4.5 Recommended excess air when using
default setting
Gas quality Excess air ue gases Max % CO2
% O2 % CO2 Lambda 1.2
Natural gas 3 - 5 ≈10 11.9
Propane 3 - 5 ≈11.5 13.9
Butane 3 - 5 ≈11.5 14.1
Biogas 3 - 5

15Bentone
172 515 15-2 2021-05-03
4.6 Setting Damper motor, Modulating operation
Air adjustment
The damper motor rotates the air damper between
three preset positions: completely closed, low load
and high load. These positions are controlled in the
motor by colored cam discs:
• Orange cam disc is adjusted for low load
(approx. 5-10°).
• Red cam disc is adjusted for high load
(approx. 90°).
• Blue cam disc is factory set for closed air
damper during standstill.
• Black cam disc has no function during
sliding and modulating operation.
Setting amount of gas
• Before starting the burner, vent the line so
that gas is safely available at the gas valve.
• Connect a manometer for measuring outlet
pressure (PBr).
• Set the control switch to the MAN position.
• Set gas pressure switch min and air
pressure switch in position MIN and (if
mounted) gas pressure switch max in
position MAX.
• Start burner. If no  ame is formed and the
manometer does not give a reading, adjust
the amount of gas by increasing with screw
N on the gas valve. Check combustion
values.
• Set high load by pressing ”+” control switch
(increase). Adjust the amount of gas with
screw V on the gas valve and check the
combustion values.
• Return to low load ”-”, check combustion
value and adjust if necessary.
• If necessary, repeat the setting on low (N)
and high load (V).
• Adjust the orange and red cam discs to
obtain the desired effect on low and high
loads. Check the amount of gas on the
system’s gas meter.
• Adjust air and gas pressure switches after
adjustment, see special instructions.
• Set the control switch to the AUTO position.
Release
By pressing the button, the motor is disengaged
and the air damper can be turned. The function is
used when servicing air dampers.
Release button
High load (red)
Low load (orange)
Closed air damper (blue)
Solenoid valve High load (black)

16 Bentone
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. Re t protective cover.
172 535 11-2
!Be careful when adjusting the air pressure switch; it
contains a live component.

17Bentone
4.8 Setting the gas pressure switch min
The gas pressure switch must react to too low a connection pressure
to the burner, prevent the burner from starting and stop the burner
during operation. The burner may start again when the connection
pressure has risen above the set pressure on the gas pressure switch.
1. Remove protective cover.
2. Open measuring socket and connect a manometer for
measuring connection pressure.
3. Start the burner.
4. Measure and note the connection pressure to the burner at
the highest input power.
5. Set the gas pressure switch to a value 10-15% lower than the
noted pressure.
6. Check the setting by carefully closing the ball valve and at the
same time measuring the connection pressure.
7. When the gas pressure switch stops the burner, the measured
value must approximately correspond to the setting on the
gas pressure switch.
8. Open ball valve.
9. Remove manometer and close measuring socket.
10. Re t protective cover.
172 535 12-2
!Check gas tightness.

18 Bentone
4.9 Calculation of gas ow
Formula
symbol
Description Example
values
VNStandard gas volume [Nm3/h]
Gas volume at normal condition 15 °C 1013 mbar
-
Q Boiler output [kW] 80 kW
HiLower caloric value of gas [kWh/m3]
Natural gas under normal conditions 15 °C 1013 mbar, EN 676
9.45 kWh/m3
ηBoiler eciency (e. g. 90%) 0.9
f Conversion factor (pressure and temperature compensation) -
tGas Gas temperature at gas meter [°C] 15 °C
PBaro Barometric air pressure [mbar] 945 mbar
PGas Pressure of gas at the gas meter [mbar] 20 mbar
V Operating volume [m3/h] -
VG Gas ow measured at the gas meter [m3] 0.26 m3
TMeasuring time for consumed gas quantity [s] 90 s
VN=QVN =80 kW =9.4 m3/h
η· Hi0.9 · 9.45 kW/m3
Calculate standard volume using the following formula:
f=
273
x
PBaro + PGas f= 273
·
945 + 20
= 0.90
273 + tGas 1013 273 + 15 1013
Calculate conversion factor using the following formula:
V=VNV=
9.4 m3/h =10.4 m3/h
f0.90
Calculate gas volume using the following formula:
V=3600 · VGV=
3600 · 0.26 m3
=10.4 m3/h
T90 sek
Determine operating volume with the following formula:
Gas quality kWh/Nm3MJ/Nm3
Natural gas G20 9.5 34.02
Natural gas G25 8.2 29.25
Caloric value of the gas
Lower caloric value Hi at normal conditions 15 °C and 1013 mbar, EN 676.
For exact caloric value of the gas, contact the gas distributor.
172 535 13
Height above
sea level [m] 0 100 200 300 400 500 600 700 800 900 1000 1100 1200
PBaro [mbar] 1013 1001 989 977 966 954 943 932 921 910 899 888 877

19Bentone
172 515 05 2018-01-02
4.10 Skeleton diagrams
1. Ball valve
2. Filter
3. Governor
4. Pressure gauge with shut-off cock
5a. Gas pressure switch, min
5b. Gas pressure switch, max
6a. Main valve, 2 -stage. When modulaing operation is required this
valve is equipped with controls for variable opening.
6b. Safety valve
7. 1) Valve proving system
9. Air pressure switch
10. Gas burner control
Pos. 5b, 7: Components not required according to EN 676.
1) Required over 1200 kW according to EN 676.hhh
Gas valve MultiBloc

20 Bentone
!All gasline components shall be
assembled and mounted without
bending, torque and outher mechanical
or thermal stress.
5. Gas valve
5.1 MultiBloc MB-VEF 407-412
1. Electrical connection gas
pressure switch mini
2. Electrical connection gas
valve
3. Pressure switch mini
4. Flange connection inlet
5. Filter
6. Data plate
7. Connection 1/8" PL
8. Adjustment screw V for
ratio PBr: PL (max. load)
9. Test point connection
1/8" before V1 (before
governor)
10. Adjustment screw for
zero point adjustment N
(min. load)
11. Test point connection
1/8" PF
12. Test point connection
1/8" PBr
13. Flange connection, outlet
14. Test point connection
1/8" Pa
before V2 (after
governor)
15. Indication of V1 and V2 in
operation (not standard)
16. O-ring
Check the  lter at least
once a year!
It is possible to connect a leakage control VPS 504 and a gas pressure
switch maxi.
NB. The impulse line PBr can be replaced by an impulse  ange on the
gas valve. The impulse line PBr is then placed inside this  ange.
172 515 16-2 2021-10-19
5.1.1 Components
16
4
5
3
1
15
2
7
6
8
10
12
9
14
13
11