Bentone ST 120 KA Technical specifications

Providing sustainable energy solutions worldwide
CR00367 178 170 15-3 2021-09-15
Installation- and maintenance instruction
ST 120 KA
LMO14.113C2E/
LMO24.255C2E
AS47CK
Translation of the original instructions.

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

3Bentone
Table of contents
1. Safety Information____________________________________ 4
2. Technical data _______________________________________ 7
2.1 Dimensions ST 120 KA ____________________________ 7
2.5 Setting of brake plate and air flow ___________________ 8
2.2 Burner installation _________________________________ 8
2.3 Working field _____________________________________ 8
2.4 Electric Specification ______________________________ 8
2.6 Recommended nozzles and pressures _______________ 9
2.7 Nozzle table, 7 - 15 bar ____________________________ 9
2.8 Description______________________________________ 10
3. General instructions _________________________________ 11
3.1 General instructions ______________________________ 11
3.2 Delivery inspection _______________________________ 12
3.3 Preparing for installation___________________________ 12
3.4 Oil distribution ___________________________________ 12
3.5 Electrical connection______________________________ 12
3.6 Burner installation ________________________________ 13
4. Basic settings ______________________________________ 14
4.1 Example of basic settings _________________________ 14
5. Burner servicing ____________________________________ 16
5.1 Servicing _______________________________________ 16
5.2 Servicing the combustion device ___________________ 16
5.3 Replacing the oil pump ___________________________ 18
5.4 Replacing the fan motor and fan wheel ______________ 19
5.5 Servicing the air intake and intake cone______________ 20
5.6 Replacing the entire electrical package ______________ 20
5.7 Replacing individual electrical package components ___ 21
6. Instructions Pump __________________________________ 22
6.1 SUNTEC AS ____________________________________ 22
7. Oil Burner Control ___________________________________ 28
7.1 Wiring diagram _________________________________ 28
7.2 Function LMO14/24 ______________________________ 29
7.3 Colour codes LMO14/24 __________________________ 30
7.4 Fault codes LMO14/24 ___________________________ 30
8. Fault Location ______________________________________ 31
8.1 Burner will not start_______________________________ 31
8.2 Burner will not start after normal use ________________ 31
8.3 Delayed ignition__________________________________ 32
8.4 Noise in pump ___________________________________ 32
8.5 Pump pressure __________________________________ 33
9. Log of flue gas analysis ______________________________ 34
10. Oil burners maintenance instructions _______________ 35

4Bentone
1. Safety 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.
• 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.
• The label information on the rating plate refers to the burner’s minimum
and maximum power.
• The power data on the type sign refers to the burner’s min. and max.
power.
• 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.
• Make sure when installing the equipment that there is enough space to
service the burner.
• Permitted ambient temperature during operation -0 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.
165 105 01

5Bentone
• 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.
• Leak checks must be performed during installation and servicing to
prevent fuel 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 the design 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.
• After commissioning, if a steady red light on the burner control is
displayed, contact your installation technician.

6Bentone
Components Service life – Recommended
replacement
Service life – Recommended
replacement Operating cycles
Control system 10 years 250 000 cycles
Pressure switch 10 years 250 000 cycles
Flame guard 10 years 250 000 cycles
UV flame sensor 10 000 hrs N/A
Damper motor 500 000 cycles
Contaktor 10 years 500 000 cycles
Burner 1 year 3000 hrs
Filter 1 year 3000 hrs Change
Oilhose 1 year Control/change
Nozzle 1 year Change 3000 hrs Change
Electrods 1 year Change/cleaning 3000 hrs Change/cleaning
Brake plate 1 year Change/cleaning 3000 hrs Change/cleaning
Motor 1 year 3000 hrs
Cuppling chaft 1 year Control/change 3000 hrs Control/change
Fan wheel “1 year Change when dirty /
unbalance”
“3000 hrs Change when dirty /
unbalance”
Oil filter 1 year 3000 hrs Change
Oil valve Tightness check 1 year Replacement in case of leakage
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 3000 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.

7Bentone
165 205 18-2
2. Technical data
The burner is intended for:
• Light oil, B10 heating oil/biofuel blend (as defined in DIN V51603-6).
and is used for:
• Water heating generators
• Hot air generators (these require LMO 24 255 C2E)
2.1 Dimensions ST 120 KA
* Min. recommended distance to floor.
Ø B C D E F G H *I
ST 120 89 194 169 54 229 148 275 200
C
A
øB
D
F
E
G
H
2.1.1 Dimensions, flanges
Flange 2
10,3
25
130-150
ø89,7
125-150
10,3
ø90 5
Flange 1
Length of
blast tube
Flange 1
Measurement A
Flange 2
Measurement A
94 76 60
147 129 113

8Bentone
2.5 Setting of brake plate and air flow
a b c
ST 120 8,0-9,0 2,7-3,3 0,5-1,5
Type Motor Complete
burner
Sound
ST 120 90W 0,75A 230V
50/60Hz 4µF 230V 1,09A 50Hz 70 dBA ± 0,5 dBA
Max operating current, see data plate.
a
bc
d1
d2
d3
Combustion
device
d1 d2 d3
ST 120 ø 90 M10 ø 125-150
!*NB It is important
that the spark does
not strike against the
brake plate or nozzle
2.2 Burner installation
2.2.1 Hole patten
Make sure the hole pattern on the boiler is designed for burner flange.
2.3 Working field
2.4 Electric Specification
Burner correspond to IP 20
-0,3
0,0
0,3
0,6
0,9
1,2
1,5
1,8
20 25 30 35 40 45 50 55 60 65 70
mbar
kW
2.0-5.6 kg/h
24-66 kW
160303-409

9Bentone
2.6 Recommended nozzles and pressures
Because of the different types of boiler in existence, with varying furnace
geometries and furnace loads, it is not possible to commit to any given spray
angle or spay pattern. Note that spray angles and spray patterns change
with pump pressures.
Nozzle 60° Solid/Hollow cone
80° Solid/Hollow conel
Pump pressure 10 bar (8–14 bar) Fuel oil 1
10 bar (7–12 bar) Kerosene
2.7 Nozzle table, 7 - 15 bar
The table applies to oils with a viscosity of 4.4 mm2/s (cSt) at a density of 830 kg/m3.
Gph 7 8 9 10 11 12 13 14 15
kg/h kW kg/h kW kg/h kW kg/h kW kg/h kW kg/h kW kg/h kW kg/h kW kg/h kW
0,35 1,13 13 1,21 14 1,28 15 1,35 16 1,42 17 1,48 17 1,54 18 1,60 19 1,65 19
0,40 1,22 14 1,33 16 1,41 17 1,49 18 1,56 18 1,63 19 1,70 20 1,76 21 1,82 21
0,50 1,56 18 1,66 20 1,76 21 1,86 22 1,95 23 2,04 24 2,12 25 2,20 26 2,28 27
0,60 1,98 23 2,00 24 2,12 25 2,23 26 2,34 28 2,45 29 2,55 30 2,64 31 2,73 32
0,65 2,23 26 2,16 26 2,29 27 2,42 29 2,54 30 2,65 31 2,75 33 2,86 34 2,96 35
0,75 2,46 29 2,49 29 2,65 31 2,79 33 2,93 35 3,08 36 3,18 38 3,30 39 3,42 40
0,85 2,77 32 2,83 33 3,00 36 3,16 37 3,32 39 3,47 41 3,61 43 3,74 44 3,87 46
1,00 3,11 37 3,33 39 3,53 42 3,72 44 3,90 46 4,08 48 4,24 50 4,40 52 4,56 54
1,10 3,55 42 3,66 43 3,88 46 4,09 48 4,29 51 4,48 53 4,67 55 4,84 57 5,01 59
1,20 3,72 44 3,99 47 4,24 50 4,47 53 4,68 55 4,89 58 5,09 60 5,29 63 5,47 65
1,25 3,94 47 4,16 49 4,40 52 4,65 55 4,88 58 5,10 60 5,30 63 5,51 65 5,70 68
1,35 4,33 51 4,49 53 4,76 56 5,02 59 5,27 62 5,50 65 5,73 68 5,95 70 6,15 73
1,50 4,89 58 4,98 59 5,29 63 5,58 66 5,85 69 6,11 72 6,36 75 6,60 78 6,83 81
1,65 5,09 60 5,49 65 5,82 69 6,14 73 6,44 76 6,73 80 7,00 83 7,27 86 7,52 89
1,75 5,48 65 5,82 69 6,18 73 6,51 77 6,83 81 7,14 85 7,42 88 7,71 91 7,97 94
2,00 6,21 74 6,65 79 7,06 84 7,45 88 7,81 93 8,18 97 8,49 101 8,81 104 9,12 108
2,25 6,99 83 7,49 89 7,94 94 8,38 99 8,78 104 9,18 109 9,55 113 9,91 117 10,26 122
2,50 7,77 92 8,31 98 8,81 104 9,29 110 9,74 115 10,18 121 10,59 126 10,99 130 11,3 8 135
2,75 8,78 104 9,39 111 9,96 118 10,50 124 11,01 131 11,50 136 11,97 142 12,42 147 12,86 152
3,00 9,71 115 10,38 123 11,00 130 11,60 137 12,17 144 12,71 151 13,23 157 13,73 163 14,21 168
4,00 11,88 141 12,70 150 13,47 160 14,20 168 14,89 176 15,56 184 16,19 192 16,80 199 17, 3 9 206
Pump pressure, bar

10 Bentone
1. Reset button
2. Control box
3. Ignition transformer
4. Ignition cables
5. Nozzle assembly
6. Nozzle
7. Brake plate
8. Blast tube
9. Ignition electrodes
10. Connecting pipe
11. Air damper
12. Solenoid valve
13. Pump
14. Drive coupling
15. Indication, air damper
16. Fan wheel
17. Adjustment, air damper
18. Photoresistor
19. Motor
2.8 Description

11Bentone
165 205 19
3. General instructions
3.1 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 filter installed before the burner’s oil pump.
If the burner is replacing an existing burner, ensure that the oil filter is
replaced or cleaned. Installation may only be performed by qualified
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.
3.1.1 Installation and Maintenance Manual
The maintenance instructions supplied with the burner must be kept at an
easily accessible location in the boiler room.
3.1.2 Instructions
The user must be comprehensively instructed in the operation of the oil
burner and entire system. It is the responsibility of the supplier to instruct the
user.
3.1.3 Inspection and maintenance
Refer to servicing schedule.
3.1.4 Start-up
In order to obtain the correct setting, a flue gas analysis and temperature
measurement must be carried out. Otherwise, there is a risk of soot build up,
poor efficiency or condensation in the chimney. The system must be fine-
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.

12 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.
3.2 Delivery inspection
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.
3.3 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.
3.4 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 filter should be installed so that the filter 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
fitted 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 fill the
burner oil system
before starting it for
the first time.
3.5 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.
!The oil filter must
be installed before
the burner’s oil
pump.

13Bentone
165 205 20
A
Return Supply
X1
X2
3.6 Burner installation
3.6.1 Hole pattern
Make sure the hole pattern on the burner corresponds to the supplied
flange, (see Technical data).
3.6.2 Burner installation
1. Install the flange with gasket on the boiler.
2. Fit the selected nozzle, (see Technical data).
3. Install the brake plate and check the ignition electrodes, (see Burner
Servicing).
4. Mount the burner to the flange.
5. Insulate between the burner and boiler door to reduce radiated heat (if
necessary).
3.6.3 Oil lines
1. Check the dimensions of the oil lines, (see Pump instructions).
2. The oil filter should be fitted to the incoming oil line. If a degasser is
installed, the oil filter should be fitted to the oil line up to the degasser
in order to prolong the service life of the oil filter.
3. For single pipe systems, the return plug must be removed, (see Pump
instructions).
4. When installing oil hoses, check that the supply and return hoses are
fitted 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.
5. Bleed the oil system. Dry running will damage the oil pump.
6. The vacuum in the suction line should not fall below 0,3 bar during
start-up.
3.6.4 Electrical connection
If the boiler does not have a pre-fitted connector, connect to the supplied
connectors (x2) as shown in the wiring diagram.
1. Switch off the main switch.
2. Connect the Europlugs (x2) as shown in the wiring diagram.
3. Fit the Europlugs (x2) to the burner.
4. Turn on the main switch.
3.6.5 Check oil line seals
Once the burner has been installed and commissioned, the seals of the
various coupling elements should be checked.
When a leak is detected, it is usually sufficient to tighten the coupling
element that is leaking.

14 Bentone
165 205 21-2
* Energy value of EO1 fuel oil = 11.86 kWh/kg.
Burner output 29 kW
Estimated nozzle output: 29 / 11,86* = 2,45 kg/h
Choice of nozzle according to the table, (see Technical data).
According to the nozzle table, this provides the following nozzle.
Nozzle: 0,65 Gph
Pump pressure: 10,0 bar
4. Basic settings
4.1 Example of basic settings
4.1.1 Choice of nozzle
ST 120 KA
4.1.2 Basic settings
The setting value for 30kW according to basic settings tables
(Setting values).
Air setting = 6,0
Insert setting = 4,0
Setting values for nozzle and air damper
0
4
8
12
16
20
24
28
32
20 25 30 35 40 45 50 55 60 65 70
160303-410
kW
Air settings
Nozzle assembly
Scale
Burner output

15Bentone
4.1.3 Insert control
The burner is equipped with a lever that changes the position of the brake
plate in the burner tube. This is used to set the correct pressure drop across
the combustion assembly, thereby obtaining good combustion without
pulsation.
The setting to be used depends on, among other things, the output settings
and overpressure in the boiler.
Setting the brake plate
• Small column: turn the screw left.
• Large column: turn the screw right.
Setting the brake plate position affects airflow. Therefore, it is always
necessary to fine-tune airflow using the burner’s airflow regulator.
4.1.4 Air intake adjustment
Setting the air intake is very important to achieve good combustion with
neither too much nor too little air. To adjust the combustion airflow, turn the
airflow regulator lever using an Allen key. The extent to which the airflow
lever must be open is determined by the heat output and overpressure in
the boiler as well as other settings on the burner such as the position of the
brake plate.
4.1.5 Setting the air quantity
Turn the air intake clockwise to increase airflow and anticlockwise to
decrease airflow.
Insert control
Air control

16 Bentone
165 205 22
!When servicing/replacing components that affect combustion, an analysis and
soot test must be carried out on the installation.
5. Burner servicing
5.1 Servicing
Servicing must be carried out after 3,000 operating hours, but at least once
yearly.
Only authorised personnel may perform service.
Before any type of servicing is carried out, shut of the power at the main
switch and turn off the oil.
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 electrical
cables and oil lines are not pinched or otherwise damaged during installation
or servicing.
5.2 Servicing the combustion device
1. Switch off mains power and disconnect the Europlug from the burner.
2. Remove the burner from the boiler by loosening the screw (A).
3. Loosen the housing screw (B) and remove the front cover (C).
4. Visually inspect the combustion assembly and check the various
components for defects.
5. Loosen and pull off the brake plate/package from the oil pipe. Clean
the brake plate as necessary.
6. Unscrew the nozzle.
7. Fit the nozzle. Do not clean the nozzle. If the nozzle is defective, it must
be cleaned.
8. Check the ignition electrodes. Replace as necessary (refer to Technical
data for electrode settings).
9. Install the brake plate and electrode package (see Fig. 1.2). Check that
the distance between the nozzle and brake plate is correct (refer to
Technical data).
10. Fit the front cover and insert the burner into the boiler.
11. Connect the Europlug and turn on the mains power.
12. Start the burner and check the combustion.
B
C
B
1 2
A

17Bentone
5.2.1 Replacing the preheater
1. Switch off mains power, remove the cover and disconnect the
Europlug from the burner.
2. Remove the burner from the boiler by loosening the screw (A).
3. Loosen the housing screw (B) and remove the front cover (C).
4. Remove the preheating and ignition cables.
5. Loosen and pull the brake disc off the preheater. Clean the brake plate
as necessary.
6. Unscrew the nozzle.
7. Loosen the nut holding the oil pipe and preheater together.
8. Install the new preheater. Check the condition of the O-ring, replace if
necessary.
9. Fit the nozzle. Do not clean the nozzle. If the nozzle is defective, it must
be cleaned.
10. Fit the brake plate/electrode package. Check that the distance between
the nozzle and brake plate is correct, (see Technical data).
11. Connect the preheating and ignition cables.
12. Fit the front cover and insert the burner into the boiler.
13. Connect the Europlug and turn on the mains power.
14. Start the burner and check the combustion.
!When servicing/replacing components that affect combustion, an analysis and
soot test must be carried out on the installation.

18 Bentone
!When servicing/replacing components that affect combustion, an analysis and
soot test must be carried out on the installation.
5.3 Replacing the oil pump
1. Switch off mains power and disconnect the Europlug from the burner.
2. Undo the oil hoses from the pump.
3. Remove the burner from the boiler by loosening the screw (A).
4. Loosen the housing screw (B) and remove the front cover (C). This will
make it easier to install the pump.
5. Disconnect the solenoid valve cable from the pump.
6. Disconnect the connection tube (D) from the pump.
7. Loosen the screws (E) and pull out the oil pump.
8. Install the new oil pump on the burner. Tighten the screws and fit the
connection tube (D). (It is important that the pump shaft splines align
correctly in the pump coupling).
9. Fit the front cover and insert the burner into the boiler.
10. Fit the oil hoses (for conversion between single-pipe and double-pipe
systems, see Pump instructions).
11. Connect the Europlug and turn on the mains power.
12. Turn on the burner, air the pump, adjust the pressure, and check the
combustion.
E
D
E

19Bentone
!When servicing/replacing components that affect combustion, an analysis and
soot test must be carried out on the installation.
5.4 Replacing the fan motor and fan
wheel
1. Switch off mains power and disconnect the Europlug from the burner.
2. Remove the burner from the boiler by loosening the screw (A).
3. Loosen the housing screw (B) and remove the front cover (C). This will
make it easier to fit the motor and fan wheel.
4. Disconnect the electrical connector to the motor.
5. Loosen the spring (G) holding the transformer.
6. Loosen the screws (F) (x2) holding the motor flange.
7. Lift out the motor.
8. Remove the end of the drive coupling from the motor axle, loosen and
remove the fan wheel.
9. Fit the fan wheel to the motor, tighten the locking screw. The fan wheel
must be fitted with a little play between the motor and the fan wheel.
Make sure that there are no scratching noises. Refit the end of the drive
coupling.
10. Align the motor flange with the fan housing. Make sure
the drive coupling has not fallen out and that it is correctly
inserted in the end of the drive coupling on the motor and
pump. Also ensure that no cables are pinched.
11. Re-assemble the motor and fan housing. Alternately tighten
the screws. This is done to ensure the fan housing and the
motor flange are aligned in the correct position.
12. Connect the motor cable.
13. Refit the spring (G) holding the transformer.
14. Assemble the fan housing and front cover and insert the burner into the
boiler.
15. Connect the Europlug and turn on the mains power.
16. Start the burner and check the combustion.
G
F
F

20 Bentone
!When servicing/replacing components that affect combustion, an analysis and
soot test must be carried out on the installation.
5.5 Servicing the air intake and intake
cone
1. Switch off mains power and disconnect the Europlug from the burner.
2. Remove the burner from the boiler by loosening the screw (A).
3. Loosen the housing screw (B) and remove the front cover (C).
4. Loosen the motor and oil pipes.
5. Remove the air intake.
6. Check the functionality and appearance of the various components in
the air regulator. Clean and replace components as necessary.
7. Assemble the burner. Make sure to refit in the same position as before
disassembly.
8. Insert the burner into the boiler and connect the Europlug.
9. Switch on mains power, start the burner and check the combustion.
5.6 Replacing the entire electrical
package
1. Switch off mains power and disconnect the Europlug from the burner.
2. Remove the burner from the boiler by loosening the screw (A).
3. Remove the cover.
4. Disconnect the electrical connector to the motor.
5. Disconnect the electrical connector to the transformer.
6. Disconnect the electrical connector to the pump.
7. Remove the photoresistor.
8. Remove the burner control and loosen the two bottom screws in the
relay socket.
9. The Europlug plate is firmly attached under the relay socket.
10. Fit the new electrical package (do not forget the Europlug).
11. Refit the photoresistor.
12. Connect the motor cable, transformer cable and pump cable.
13. Turn on the burner control.
14. Refit the cover.
15. Connect the Europlug and turn on the mains power.
16. Start the burner and check the combustion.
Motor
Oil pipe
Air intake