Bentone BG 650i M J/K IP54 Technical specifications

Providing sustainable energy solutions worldwide
Installation- and maintenance instruction
BG 650i M J/K IP54
LMV37
MB-DLE 415
Translation of the original instructions.
CR00264 178 096 82-2 2021-08-02

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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nedladdning
eller scanna QR-koden.
3. Skriv in brännarens
artikelnummer som finns på din
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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
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oder scannen Sie den QR-Code.
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Detaillierte Informationen zum
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heruntergeladen werden.
2

3Bentone
Table of contents
1. General Information __________________________________ 4
2. Technical data _______________________________________ 7
2.1 Dimensions ______________________________________ 7
2.3 Gas categories, approved gases ____________________ 8
2.2 Output range _____________________________________ 8
2.4 Working field _____________________________________ 9
2.5 Electric Specification EN 60335-2-102 _______________ 9
2.6 Description _____________________________________ 10
2.7 Components – Electrical box (automatic control unit) __ 11
3. General instruktions _________________________________ 12
3.1 General instructions ______________________________ 12
3.2 Operating instructions ____________________________ 12
3.3 Instructions _____________________________________ 12
3.4 Inspection and maintenance _______________________ 12
3.5 Start up ________________________________________ 12
3.6 Commissioning of installation ______________________ 12
4. Installation _________________________________________ 13
4.1 Delivery check ___________________________________ 13
4.2 Preparations for installation ________________________ 13
4.3 Gas supply______________________________________ 13
4.4 Electrical connection______________________________ 13
4.5 Handling and lifting instruction _____________________ 14
4.6 Fitting the burner to the boiler ______________________ 15
4.7 Inspection of gas nozzle before commissioning _______ 16
4.8 Gas nozzle _____________________________________ 17
4.9 SQM damper motor ______________________________ 18
5. Setting the burner ___________________________________ 20
5.1 Setting the combustion assembly___________________ 20
5.2 Setting the air damper ____________________________ 20
5.3 Setting the gas damper ___________________________ 20
5.4 Setting the air pressure switch _____________________ 21
5.5 Setting the min. gas pressure switch ________________ 22
5.6 Setting the overload protection gas pressure switch ___ 23
5.7 Setting the max. gas pressure switch _______________ 24
5.8 Skeleton diagrams _______________________________ 25
6. Multi-Bloc, MB-DLE 412-420 _________________________ 26
6.1 Calculate prepurge time ______________________ 31
6.2 Calculating the quantity of gas supplied _____________ 33
7. Service_____________________________________________ 34
7.1 Servicing the combustion assembly _________________ 34
7.2 Replacement of damper motor, air __________________ 35
7.3 Servicing air dampers_____________________________ 37
7.4 Replacement of damper motor, gas _________________ 38
7.5 Vibration________________________________________ 39
7.6 Flame monitoring and ionisation current check________ 40

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1. General Information
This Installation and Maintenance manual:
• is to be regarded as part of the burner and must always be kept near
the installation site.
• is intended for use by authorised personnel.
• must be read prior to installation.
• must be observed by all who work with the burner and associated
system components.
• work with the burner may only be carried out by certified installers/
personnel.
Enertech AB is not liable for any typographical errors and reserves the right
to make design changes without prior notice.
Safety instructions
• The burner may only be used for its intended purpose in accordance
with the product’s technical data.
• The burner may only be installed and operated by authorised
personnel.
• The product is packaged to prevent damage from occurring during
handling. 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.
• Check that the burner is compatible with the boiler’s output range.
• All components must be installed without being bent, twisted or
subjected to mechanical or thermal forces which can affect the
components.
• The burner must be installed so that it complies with local regulations
for fire safety, electrical safety, and fuel distribution.
• The gas outlet from the pressure regulator shall be configured in
accordance with applicable regulations and lead to a safe area.
• Make sure when installing the equipment that there is enough space to
service the burner.
• Permitted temperature during operation -10 to +60 °C. Max 80%
relative humidity, no condensation.
• The installer must ensure that the room has adequate air supply.
• The room must comply with local regulations pertaining to its intended
use.
• The installation site must be free of chemicals.
• Burner pipes, fan wheels and air dampers may contain sharp edges.
• The surface temperature of the burner’s components can exceed
60°C.
• Caution: The burner has moving parts, and there is risk of crushing
injuries.
172 515 01 2018-01-02

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• The electrical installation must be professionally carried out in
accordance with applicable high voltage regulations, as per Enertech’s
recommendations.
• Before servicing, shut off the fuel supply and turn off the power to the
burner.
• Seal inspections must be performed during installation and servicing to
prevent gas leakage.
• Care should be taken by the installer to ensure that no electrical cables
or fuel lines are crushed or otherwise damaged during installation or
servicing.
• 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.
• The burner must not be put into operation without proper safety and
protection devices.
• A Class BE fire extinguisher is recommended.
• It is forbidden to alter thedesign or use accessories which have not
been approved by Enertech in writing.
• Prior to operation, the following points must be checked:
-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
Actions to take if you smell gas
Turn off the equipment and the boiler. Open windows and doors. Prevent
open flames or sparking, e.g. do not turn lights on or off, do not use any
electrical appliances, do not use mobile phones. Open windows and doors.
Close the gas ball valve. Warn residents; do not use doorbells. Evacuate
the building. Notify the installer or gas supplier once the building has been
evacuated.

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Control system 10 years 250 000 starts
Valve control system 10 years 250 000 starts
Pressure switch 10 years 250 000 starts
Ignition system with flame guard 10 years 250 000 starts
UV flame sensor 10 000 hrs N/A
Gas pressure regulators 15 years N/A
Gas valve without seal testing 10 years 250 000 starts
Gas valve with seal testing Replacement upon fault detection N/A
Gas pressure switch 10 years 250 000 starts
Safety blow-off system 10 years N/A
Damper motor N/A 500 000 starts
Contactor 10 years 500 000 starts
Burner 1 year 3 000 hrs
Inspection of electrical installation 1 year 3 000 hrs
Leakage check 1 year 3 000 hrs
Filter 1 year replacement at Δp>10 mbar 3 000 hrs replacement at
Δp>10 mbar
Electrodes Replacement/Cleaning 1 year Replacement/Cleaning 3 000 hrs
Brake disc Replacement/Cleaning 1 year Replacement/Cleaning 3 000 hrs
Motor 1 year 3 000 hrs
Fan wheel 1 Year
Replacement when cleaning
needed/imbalance
3 000 hrs
Replacement when cleaning
needed/imbalance
The burner and its components must be recycled according to applicable regulations.
Burner servicing schedule
Servicing must be carried out once a year or after 3 000 hours of operation.
Component replacement intervals
Delivery check
• Make sure everything is delivered and the goods have not been
damaged during transit.
• If something is wrong with a delivery, report it to the supplier.
• Transport damage must be reported to the shipping company.

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2. Technical data
Burners are intended for use at:
• Water heating generators
• Steam generators
• Industrial applications
• Hot air generators
2.1 Dimensions
• Gas connection 1-2”
* The above dimensions are max. measurements. Depending on the
components used, the measurements may vary.
** Min. recommended distance to floor.
K L M
BG 650 M12 (ø210)ø254-280 Ø 190
D E F G H I **J
BG 650 660 320 400 *590 *743 343 200
K
L
M
2.1.1 Heat generator connection dimensions
I
H
E
CC
B
AD
G
F
**J
Type Length of
burner tube
Flange
measure A
Burner tube
measure B
Burner tube
measure C
BG 650 Standard 1 316 286 184 162
Standard 2 416 386

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2.3 Gas categories, approved gases
Only dry gas is permitted for use.
Capacity
kW
Gas quantity at
min. power
Nm3/h 1)
Gas quantity at
max. power
Nm3/h 1)
Max.
connection
pressure mbar
Nominal
connection
pressure mbar
See data plate.
1) Lower heat value Hu at normal state 15°C and 1013.25 mbar EN676.
Grade of gas
Natural gas
Natural gas
Butane
Propane
Gas quantity and capacity vary according to grade of gas and connection
pressure.
BG 650
G20 200-1125 21 118 360
G25 200-1125 24.4 137 360
G30 200-1125 6,2 34,6 360
G31 200-1125 8,1 45,7 360
kWh/Nm3MJ/Nm3kcal/Nm3
G20 9.5 34.02 8126
G25 8.2 29.25 6986
G30 32.5 116.09 27728
G31 24.6 88.00 21019
2.2 Output range

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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.
2.5 Electric Specification EN 60335-2-102
Burner correspond to IP54
!Do not operate
outside the working
field.
Type Motor The recommended
main fuse, motor
Control
power
Sound
BG 650 230/400V 6,0/3,6A C10A 1~230V 1,0A
50Hz IP54 91 dBA ± 0,5 dBA
-2
0
2
4
6
8
10
12
14
16
100 200 300 400 500 600 700 800 900 1000 1100 1200
mbar
kW
G20, G25 200-1125 kW
G30, G31 200-1125 kW
160302 283-2
2.4 Working field

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2.6 Description
2
10
3
7
6
5
4
13
1
8
9
1. Gas pressure switch
2. Damper motor, gas
3. Multibloc
4. Damper motor, air
5. Air pressure switch
6. Motor
7. Electrical box (burner)
8. Burner tube
9. Locking device, flange
10. Gas pressure switch max
11. Electrodes
12. Ignition transformer
13. Ball valve
14. Brake plate
15. Nozzle
16. Nozzle assembly
17. Ionisation electrode

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7
4
5
3
2
12
14 15
16
17
2.7 Components – Electrical box (automatic control unit)
1. Switch 0-1
2. Fuse
3. Automatic control unit LMV
4. Contactor
5. Thermal overload protection
6. AZL display for LMV automatic control unit
7. Disconnector

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3. General instruktions
3.1 General instructions
The installation of the gas burner must be carried out in accordance with
current regulations and standards. The installers of gas burners should
therefore be acquainted with all regulations and ensure that the installation
complies with the requirements. The installation, mounting and adjustment
should be made with the greatest care and only the correct gas should be
used.
3.2 Operating instructions
The operating instructions accompanying the burner should be left in a
prominent position in the boiler room.
3.3 Instructions
The user should be thoroughly in-structed in the function of the gas burner
and the whole installation. The supplier must instruct the user.
3.4 Inspection and maintenance
Daily inspection is advisable..
3.5 Start up
After the burner has been fitted to the boiler and the electric connection, the
leakage control, the venting and the electric function test have been carried
out, the burner will be ready for start-up.
Howerer, study the sections dealing with adjustments of multi-bloc,
combustion air and combustion head. Open the ball valve and switch on the
main switch. If the burner starts the actual adjustment can be made.
3.6 Commissioning of installation
Control of the combustion. The combustion quality is checked by means of a
flue gas analysis device. Adjust the burner to appr. 20%
excess air in accordance with the table. Check the flue gas temperature.
Calculate the efficiency. Check also the actual gas volume on the gas meter
so that the correct input is achieved.

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4. Installation
4.1 Delivery check
Check that all has been delivered and that the goods have not been
damaged during transport. If that is not the case, please notify the delivery
company. Transport damages should be reported to the forwarding agency.
4.2 Preparations for installation
Check that the measurements and capacity range of the burner are
compatible with the boiler. The power ratings on the type plate refer to the
min. and max. power of the burner.
4.3 Gas supply
For good operating safety, it is important that the gas supply system is
installed correctly.
Consider the following:
1. Check that the burner is approved for the gas quality of the installation.
If not, please contact the supplier.
2. Check that the gas components of the burner are approved for
indicated gas pressure.
3. The gas supply system should be installed in accordance with current
standards.
4. Pipe lines should be run so that service on boiler and burner is
facilitated.
5. Pipe lines should be run so that eventual contaminants cannot come
into contact with the gas components.
4.4 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
!If an electric connection other than the one recommended by Enertech is used, a
risk of damage and injury can arise.

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4.5 Handling and lifting instruction
4.5.1 BG 550, BG 650
!The lifting aid used here,
is available as spare part.
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4.6 Fitting the burner to the boiler
Mount the burner to the boiler using 4 bolts. See technical data for the hole
pattern.
To make the fitting process easier, it is possible to separate the burner body
from the gas flange with the combustion head and valve assembly in place.
Proceed as follows:
1. Switch off the mains power.
2. Remove the cover plate from the fan housing.
3. Loosen screw D on the nozzle assembly.
4. Disconnect the electrical cables to the valve assembly and gas damper
motor.
5. Undo the screws (B) on both sides.
6. Undo the end stops (C) on the guides.
7. Disconnect the ignition cable, ionisation cable, and control arm from
the gas nozzle.
8. Pull out the burner body from the guides and put it in a suitable place.
After separating the burner body and the gas flange, it is easier to mount
the gas flange with the burner head and valve assembly to the boiler (loosen
the valve assembly if required). Once the gas flange is fitted to the boiler, it
is easy to lift the burner body up onto the guides. Assemble the burner in
reverse order to its disassembly.
Service position
!Check the gas tightness.
!The burner is directly connected, ensure that pow-
er to all components is disconnected.

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Serviceläge
!The burner is directly connected, ensure that
power to all components is disconnected.
4.7 Inspection of gas nozzle before
commissioning
The gas nozzle can easily be inspected by using the guides on the burner.
Proceed as follows:
1. Switch off the mains power.
1. Remove the cover plate from the fan housing.
1. Undo the nut (D) to the nozzle assembly.
2. Disconnect the ignition cable and ionisation cable for the gas nozzle.
3. Ensure there is enough slack in the electrical cables to the valve
assembly and gas damper motor to pull out the burner body in the rear
position on the guides. If there is not enough slack the cables can be
disconnected.
4. Undo the screw (B) on both sides.
5. Pull out the burner on the guides.
6. Undo the screw(s) (A) on the gas flange.
7. Take out the gas nozzle.
8. See section Gas nozzle
Re-assemble the burner in reverse order to that described above. When re-
assembling, make sure that the O-ring located between the gas nozzle and
the gas flange is in the correct position when the nozzle is re-fitted.

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4.8 Gas nozzle
45°
Natural gas Propane
Biogas (UV detector)

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Torque up to 3 Nm nominal output torque
self-holding torque
SQM33.5… Parameter 601.00:0
Parameter 601.01:1
Parameter 602.00:0
Parameter 602.01:1
Cable length:
SQM33.510… 1,5 m
SQM33.511… 3,0 m
Running time Adjustable on the LMV3...
Supply voltage AC / DC 24 V ±20 % (load on
interface)
Power consumption Max. 10 W
Perm. on time 50%, max. 3 min. continuously
Angular adjustment Usable range max. 90°
Degree of protection IP54
Rated resolution encoder monitoring 0.7°
0-position of actuator drive shaft Supply state 0 ±0.6°
Environmental conditions:
Temperature range -20...+60 °C
Humidity <95% r.h.
4.9 SQM damper motor
4.9.1 Technical specification

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4.9.2 Mounting position
Optional
4.9.3 Choice of damper motor variant
An SQM33 damper motor with adjustable rotational direction is used on the
burner to control gas and air volumes.
4.9.4 Important to remember
• When servicing/replacing a damper motor, select the correct motor for
the desired control as the direction of rotation varies.
• When servicing/replacing a damper motor, clean it and check that the
damper is not sluggish to avoid problems with the damper motor not
managing to make adjustments.
• The tightening torque of 1.5 Nm for the fixing screws must not be
exceeded to prevent damage to the actuator and to ensure that the
actuator does not twist on its mounting surface
• When mounting the actuator, ensure that the permissible axial and
radial loads on the bearing are no not be exceeded
• When fitting the actuator to the controlling element, the correct
mounting order must be observed. It is usually as follows:
1. Screw on the actuator
2. Connect the actuator’s drive shaft to the controlling element using the
coupling pin screw.
• The actuators are supplied with attached connecting cable and plug
• One-time bend when laying the cable: 2 x cable diameter
• Always run the high-voltage ignition cables separate from the unit and
other cables while observing the greatest possible distance.
• The holding torque is reduced when the actuator is disconnected from
power.

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X
5. Setting the burner
5.1 Setting the combustion assembly
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.
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.
Make the adjustment by turning screw X.
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.
5.2 Setting the air damper
The position of the air damper must be adjusted to achieve a suitable fuel-air
mixture in the operational events that are programmed.
See section (LMV) for the setting procedure.
5.3 Setting the gas damper
The position of the gas damper must be adjusted to achieve the desired
minimum and maximum input power.
See section 13.4 (LMV) for the setting procedure.