Bentone Biogas STG Technical specifications

Providing sustainable energy solutions worldwide
Installation- and maintenance instruction
Biogas STG + BFG 1
LME23.331C2
DMV-DLE 512
Translation of the original instructions.
CR00301 178 111 35-3 2021-05–26

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
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Detaljerede oplysninger om
ecodesign kan downloades på:
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1. Manuels dans d’autres
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2. www.bentone.com\download
ou scannez le code QR.
3. Saisir le numéro d’article
du brûleur sur votre plaque
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l’illustration) et sélectionnez la
langue.
Des informations détaillées
sur l’écodesign peuvent être
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-de
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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
General
Table of contents
1. General Information__________________________________ 4
2. Dimensions BFG 1 Biogas ____________________________ 8
2.1 Description BFG 1________________________________ 9
3. Dimensions STG Biogas_____________________________ 11
3.1 Description STG ________________________________ 12
3.2 Double Solenoid valve Type DMV-D.../11
Type DMV-DLE.../11 __________________________________ 14
4. Gas pressure regulator Type FRS_____________________ 16
5. Electric Equipment LME... ___________________________ 18
5.1 Wiring diagram _________________________________ 18
5.2 Function LME... _________________________________ 19
5.3 Control program at faults; fault mode indicator LME .... 20

4
1. General Information
Important to remember!
This installation and maintenance manual is intended for the user and qualified
professionals. It should be taken into account by all those who work with the
burner and associated system components. Work with the boiler may only be
carried out by individuals who have completed certified training.
• This manual is to be regarded as part of the burner and must always be
kept near the installation site. Enertech AB reserves the right to make
changes and correct any printing errors.
• All products are packed to prevent any damage occurring when they are
handled. Handle the products with care. Two or more people are needed
to move large packages. All products must be stored upright on a level,
dry surface.
• The weight is on the label cardboard box.
• The burner may be installed by authorised personnel only.
• Check that the burner is compatible with the boiler’s output range.
• The burner must be installed so that it complies with local regulations on
fire safety, electrical safety and boiler and fuel distribution.
• Make sure when installing the equipment that enough room is left to
service the burner.
• Permitted temperature during operation +3 to +30 °C.
• Temperature during transport/storage -10 to +60 °C.
• Max. relative air humidity 80%, no condensate.
• The installer must ensure that the room has sufficient fresh air ventilation as
per local norms.
• The room must comply with local regulations applicable to its intended
use.
• If any electrical connection is used other than that recommended by
Enertech, there may be a danger of damage to property and personal
injury.
• The electrical installation must be carried out in accordance with applicable
heavy current regulations and in a professional manner, avoiding the risk of
gas leaks, fire or personal injury.
• Care should be taken by the installer to ensure that no electrical cables or
gas pipelines are crushed or damaged during installation or servicing.
• If the boiler has a door that opens, this should be locked with a door
switch.
• Does this product need to be sorted as metal, plastic and electrical when
being recycled? Used material must be handled appropriately and in an
environmentally friendly manner. Observe local regulations.
• When in operation the burner’s noise level can exceed 85 dBA. Wear ear
defenders when in the same room.
• It is not permitted to use the burner outside the intended area of use.
• The burner may not be commissioned with safety or protective devices
that are not fit for purpose. Nor are custom design modifications or the
installation of accessories not tested together with the burner permitted.
Commissioning is to be carried out by qualified professionals only. 172 525 68

5
• Prior to commissioning, the following points should be checked:
-all fitting and installation work has been completed and approved.
-the electrical installation has been carried out properly, the correct
fuses added to circuits and measures to safeguard enclosures on
electrical devices and all wiring have been checked.
-flue gas ducts and combustion air ducts are not blocked.
-all actuators and control and safety devices are in working order and
set correctly.
Service
• Service should be performed after approx. 3,000 working hours, but
no less than once a year.
• Only authorised personnel should perform the service.
• Before obtaining access to terminals, all supply circuits must be
disconnected.
• Be careful: certain parts exposed after separation of the burner can be
hotter than 60 °C.
• Care should be taken by the installer to ensure that no electrical
cables or gas pipelines are crushed or damaged during installation or
servicing.
• Only spare parts recommended by Enertech should be used.
What to do if you smell gas
• 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. Vacate the building. Notify the company/installer or gas
supplier once the building has been vacated.
• Turn off the equipment and take the boiler out of operation. Open
windows and doors. Notify the company/installer.
• Check that the burner is approved for the intended grade of gas and
connection pressure.
• No safety systems on the burner may be disconnected.
• General advice on how to eliminate a fire.
• One or more boilers for solid or liquid fuel whose total rated output
exceeds 60 kW should be installed in a separate boiler room. An
airlock should be the only way a separate boiler room is connected
to evacuation routes from residential buildings in activity class 3, and
offices in activity class 1 that do not constitute an integrated part
of an industrial activity or similar activity. Ensure that local rules and
regulations are observed.
• The term “separate boiler room” refers to boiler rooms which are
specially designed to provide protection against the starting and
spreading of fire and the production and spreading of combustion gas.
Ensure that local rules and regulations are observed.
• Separate boiler rooms and fuel stores immediately next to a separate
boiler room should be designed as individual fire compartments.
Ensure that local rules and regulations are observed.

6
Safety instructions
• Read the manual before installation or commissioning.
• The burner may be installed by authorised personnel only.
• Check that the burner is compatible with the boiler’s output range.
• The power data on the type sign refers to the burner’s min. and max.
power.
• Check that the burner’s dimensions and capacity range are suitable for
the boiler in question.
• The electrical installation must be carried out in accordance with
applicable heavy current regulations and in a professional manner,
avoiding the risk of gas leaks, fire or personal injury.
• If any electrical connection is used other than that recommended by
Enertech, there may be a danger of damage to property and personal
injury.
• Care should be taken by the installer to ensure that no electrical
cables or gas pipelines are crushed or damaged during installation or
servicing.
• The burner must be installed so that it complies with local regulations
on electrical safety and boiler and fuel distribution.
• Check that the burner is approved for the intended grade of gas and
connection pressure.
• No safety systems on the burner may be disconnected.
• The installer must ensure that the boiler room has sufficient fresh air
ventilation as per local norms.
• Gas leak checks should be carried out on installation and servicing to
avoid a gas leak and the associated hazards and risks.
• Before servicing, shut off the fuel supply and turn off the power to the
burner.
• The surface temperature of the burner’s components may exceed
60°C.
• Be careful when servicing: there may be a risk of pinching.
• Ensure that the burner is protected against direct spraying of water,
since it is not designed to withstand this.
• Only spare parts recommended by Enertech should be used.
• This burner cannot be used for biogas without first contacting
Enertech.
• If the boiler has a door that opens, this should be locked with a door
switch.

7
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.

8
195
186 35
245
350
2. Dimensions BFG 1 Biogas
The above-mentioned measurements are maximum measurements. They
can vary, depending on which components are used.
135
286
B
A
Connection pressure 25 mbar
60% H4
-0,5
0,0
0,5
1,0
1,5
2,0
2,5
3,0
10 15 20 25 30 35 40 45 50 55
mbar
kW
160303-282
15-50 kW
172 525 48-2

9
2.1 Description BFG 1
7
8
10
11
12
13
14
15
16
22
1
2
3
4
5
6
24
23

10
2.1.1 Components BFG 1
1. Blast tube
2. Gas pressure switch
3. Connection multiblock
4. Ignition transformer
5. Motor
6. Capacitor
7. Multiblock
8. Air pressure switch
9.
10. Air intake
11. Air regulation
12. Electric connection
13. Gas burner control
14. Reset button
15. Nozzle assembly adjustment
16. Screw for division of burner in front and rear part
17. Nozzle assembly
18. Brake plate
19. Ignition electrode
20.
21. Nozzle
22. Air flow indicator (indicates the air setting)
23. Pressure regulator
24. Filter
18
19
17 21

11
3. Dimensions STG Biogas
290
139
11
13 14
15
244
192
450
103
61
249
Connection pressure 45 mbar
60% H4
-0,5
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
30 40 50 60 70 80 90 100 110 120
mbar
kW
160303-281
41-110 kW

12
7
8
10
9
1
23
5
6
12
4
3.1 Description STG
23 24
16

13
17
18
19
21
3.1.1 Components
1. Blast tube
2. Gas pressure switch
3. Connection multiblock
4. Ignition transformer
5. Motor
6. Capacitor
7. Multiblock
8. Air pressure switch
9. Test point for the air pressure switch on the low-pressure side
10. Air intake
11. Air regulation
12. Electric connection
13. Gas burner control
14. Reset button
15. Nozzle assembly adjustment
16. Screw for division of burner in front and rear part
17. Nozzle assembly
18. Brake plate
19. Ignition electrode
20.
21. Nozzle
22.
23. Pressure regulator
24. Filter

14 Bentone
172 515 67 2018-02-12
3.2 Double Solenoid valve Type DMV-D.../11
Type DMV-DLE.../11
Nominal widths
Rp 1/2 - Rp 2
Electrical connection IEC 730-1
(VDE 0631 T1)
Volt U n ~(AC) 230 V
Valve 2 x Class A
Ambient temperature -15 °C … +60 °C
IP 54
Family 1 + 2 + 3
Max. operating pressure 500 mbar
DMV 505-520/11
Pressure taps 1, 2, 3, 4 Sealing plug
Screw plugs 1,2,3 may also be
replaced by a measuring socket
G 1/8 DIN ISO 228.
Concealed connecting bore for
system accessories.

15Bentone
6.
6. DMV - D 507/11 - 525/11 DMV-
DLE 507/11 - 525/11 Main flow
setting only possible at V1! Set main
volume on open valve. Set valve
V1 during operation.Check setting
values continuously. Smallest setting
volume flow:
7. DMV-DLE Rapid stroke
adjustment V start Factory setting
DMV-DLE: Rapid stroke not adjusted
1. Unscrew the adjustment cap E
from the hydraulic brake.
2. Turn the adjustment cap and
use as a tool.
3. Turn a-clockwise = increase
rapid stroke (+).
8. Replacing hydraulic brake unit or
adjustment plate
1. Switch off firing system.
2. Remove locking varnish from
countersunk screw A.
3. Unscrew countersunkscrew A.
4. Unscrew socket headscrew B.
5. Raise adjustment plate C or
hy-draulic brake D.
6. Remove sealing plug E
7. Exchange adjustment plate C
or hydraulic brake D
8. Screw in countersunk and
socket head screw. Only
tighten socket head screw so
that hydraulic brake can just
be turned.
9. Coat countersunk screw A
with locking varnish.
10. Leakage test: Pressure tap at
sealing plug 2:
DMV 507-520/11 Pressure tap
at sealing plug 3: DMV 525/11
p max. = 500 mbar.
11. Perform functional test.
12. Switch on firing system.
9. Replacing the solenoid Versions
with adjusting plate DMV-D 5.../11or
hydraulic brake DMV-DLE 5../11
1. Remove hydraulic brake or
adjusting plate as described
on page 6: ”Replacing the
hydraulic brake or adjusting
disk”, steps 1 - 5.
2. Replace solenoid
Important: Make sure that the
solenoid no. and voltage are
correct!
3. Remount hydraulic brake or
adjust-ing plate as described
on page 6. ”Replacing the
hydraulic brake or adjusting
plate”, steps 7 -11.
7. 8.
9.

16 Bentone
172 515 66 2018-01-02
4. Gas pressure regulator Type FRS
Nominal diameters
Rp 3/8 - Rp 2 1/2
DN 40 - DN 150
Pressure taps
1. Vent plug
2. Connection for external pulse
G 1/4 screw plug ISO 228, on
both sides, optional.
3. G 1/4 screw plug ISO 228, in
inlet pressure range, on both
sides
Max. operating pressure 500 mbar
Pressure regulator Class A
Ambient temperature -15 °C … +70 °C
Inlet pressure range 5 - 500 mbar
Family 1 + 2 + 3
Outlet pressure range 2,5 - 200 mbar
Vent nozzle
Vent plug
!Never close vent nozzle!

17Bentone
2.1.
B
AB
Adjustment of outlet pressure
(setpoint adjustment)
Factory setting: Standard spring p 2
10-30 mbar
1.
1. Unscrew protective cap A.
2. Adjustment (+) Setting spindle
B ”Turn counter-clockwise”
= Increasing outlet pressure
(setpoint)
or
2.
Adjustment (-) Setting spindle B
”Turn clockwise” = Reducing outlet
pressure (setpoint)
4. Check setpoint
5. Screw on protective cap A.
6. Attach lead seal (Page 5).
4.
B
E
C/D
B
A
3.
Replace setting spring 3-4
1. Remove protective cap. A.
Release spring by turning
adjustment spindle B counter
clockwise. Turn spindle to
stop.
2. Unscrew complete adjustment
device B and remove spring C.
3. Insert new spring D.
4. Assemble complete
adjustment device and adjust
desired off-set.
5. Screw on protective cap A.
Stick adhesive label E onto
typeplate.
6. Attach lead seal.

18
5. Electric Equipment LME...
5.1 Wiring diagram
Alt. 1
Acc. to DIN 4791
Alt. 2 Alt. 3
172 615 82-2

19
5.1.1 List of components
A1 Gas burner control S7 Main switch
A3 Valve, leak tester, Dungs VPS504 (optional) S8 Air pressure switch
B1 Ionisation electrode S9 Gas pressure switch
U2 UV-detectorQRC (LME23...) S30 External reset
F1 Fuse T1 Ignition Transformer
H1 Lamp, operation Y1 Solenoid valve
M1 Burner motor X3 Plug-in contact, burner
P1 Timer total operating time X4 Plug-in contact, boiler
S3 Control thermostat X17 Plug-in contact, burner external reset (optional)
S4 Temperature limiter X18 Plug-in contact, boiler external reset (optional)
5.2 Function LME...
1. Operating switch ON-Thermostat ON-Gas pressure switch ON
A check that the air pressure switch does not indicate fan pressure is
carried out
2. Burner motor starts
A check that the air pressure switch indicates sufficient fan pressure is
carried out
3. The ignition spark is created
4. The gas solenoid valve is open
The gas is ignited. The ionisation electrode now indicates a flame
5. The safety time expires
The ignition spark ceases. The safety period ceases. If the spark is
missing or it disappears after this time limit, the gas burner control is
blocked
6. Operating position
7. Stop
The operation of the burner can now be stopped with the control switch
or thermostat
If the gas burner control is blocked
Red light in the gas burner control is lit. The burner is restarted by
pushing the reset button
5.2.1 Technical data
LME23.331C2
3 s
30 s
2.5 s
< 3 s
< 1 s
< 1 s
5 µA
20 µA
160303-324
Preiginition time
Prepurge time
Postignition time
Safety lockout time
Reset time after lockout
Reaction time on flame failure
Min. ionisation current at flame
Max. ionisation current
!Mains connection
and fuse in
accordance with
local regulations.

20
Light period
(waiting period ≥ 10 s)
Blinking
code Pause Blinking code
Press the reset
button > 3 s
5.3 Control program at faults; fault
mode indicator LME ....
5.3.1 Colour codes
Table colour codes for multi-coloured signal light (LED)
Status Colour codes Colours
Waiting period «tw», other waiting
periods
○………………… Off
Ignition phase, ignition controlled •○ •○ •○ •○ •○ • Blinking yellow
Normal operation □………………… Green
Operation, poor flame signal □○□○□○□○□○ Blinking green
Illegal flame signal during start-up □▲□▲□▲□▲□▲ Green-Red
Undervoltage ●▲●▲●▲●▲●▲ Yellow-Red
Fault, alarm ▲………………… Red
Blinking code for fault codes ▲○ ▲○ ▲○ ▲○ Blinking red
Interface diagnostics ▲▲▲▲▲▲▲▲ Red flicking
5.3.1.1 Diagnosing alarm causes
After alarm disconnection, the red alarm signal light is lit continuously.
The diagnosing of the alarm cause can be read according to the following
sequence:
…… Continuous
○Off
▲Red
●Yellow
□Green
5.3.1.2 Limiting of starting repetitions
LME 11... has a function with start repetition if the flame is not created at
start or disappears during operation.. LME 11... allows max. three repetitions
during continuous starting cycle.