Bentone BF1 Series Technical specifications

178 084 35-2 2012-04–27
Installation- and maintenance instruction
BF1
2-stage

3Bentone BF1
General
Table of contents
GENERAL
Important to think about!_____________________________________________4
Safety instructions ______________________________________________________4
Warnings___________________________________________________________________4
Electrical safety __________________________________________________________5
Assembly and Service_________________________________________________5
Condensation in the flue______________________________________________5
Measures to increase the temperature__________________________5
Adjusting the burner ___________________________________________________5
1. TECHNICAL DATA _______________________________________________________6
1.1 Dimensions BF1_______________________________________________________6
1.1.1 Dimensions, flanges_______________________________________6
1.2 Model BF1-2 K 76-26_______________________________________________7
1.2.1 Burner output/ Basic settings_________________________7
1.3 Recommended nozzles and pressures _______________________8
1.4 Nozzle table, 8-24 bar ______________________________________________8
1.3.1 Burner with preheater ____________________________________8
1.5 Description______________________________________________________________9
1.5.1 Components_______________________________________________10
1.6 Declaration of concordance/conformity ____________________11
2. INSTALLATION __________________________________________________________ 12
2.1 Delivery checks______________________________________________________12
2.2 Preparations for installation _____________________________________12
2.3 Oil supply ______________________________________________________________12
2.4 Electrical connection_______________________________________________12
2.5 Choice of nozzle ____________________________________________________12
2.6 Brake plate and airflow setting_________________________________ 12
2.7 Burner installation___________________________________________________ 13
2.7.1 Hole pattern________________________________________________ 13
2.7.2 Burner installation________________________________________13
2.7.3 Oil pipes_____________________________________________________13
2.7.4 Electrical connection____________________________________ 13
3. BASIC SETTINGS______________________________________________________ 14
3.1 Example of basic setting for two-stage burners _________ 14
3.1.1 Choice of nozzle__________________________________________ 14
3.1.2 Basic settings _____________________________________________14
3.1.3 Nozzle assembly adjustment ________________________ 15
3.1.4 Air intake adjustment ___________________________________15
3.1.5 Procedure for setting the amount of air __________15
3.1.6 Inlet cone, air adjustment _____________________________15
3.1.7 Rotation of the air intake ______________________________16
3.1.8 Air duct ______________________________________________________16
4. BURNER SERVICING ________________________________________________ 17
4.1 Warning ________________________________________________________________ 17
4.1.1 Service position___________________________________________ 17
4.1.1.1 Service position 1 ______________________________________17
4.1.1.2 Service position 2 ______________________________________17
4.1.1.3 Service position 3 ______________________________________18
4.1.2 Combustion assembly service ______________________18
4.1.3 Preheater replacement_________________________________ 19
4.1.4 Oil pump replacement__________________________________19
4.1.5 Fan motor replacement________________________________ 20
4.1.6 Air intake and intake cone service _________________21
4.1.7 Fan wheel checks________________________________________21
4.1.7.1 Inspection______________________________________________21
4.1.7.2 Cleaning, alternative 1__________________________________22
4.1.7.3 Cleaning, alternative 2__________________________________23
4.1.8 Electrical module_________________________________________23
4.1.8.1 Replacement of complete electrical package__________ 24
4.1.8.2 Replacement of individual electrical components______24
4.1.8.3 Replacing the damper motor___________________________25
5. PUMP INSTRUCTIONS______________________________________________ 26
5.1 Suntec AT2 45C_____________________________________________________ 26
5.1.1 Technical data_____________________________________________ 26
5.1.2 Components_______________________________________________26
5.1.3 Function AT2 45C _______________________________________ 27
5.1.4 Suction pipe tables AT2 45C ________________________28
5.1.4.1 Overhead Tank _________________________________________ 28
5.1.4.2 Underlying Tank ________________________________________ 28
5.2 Danfoss BFP 52E___________________________________________________ 29
5.2.1 Technical data_____________________________________________ 29
5.2.2 Components_______________________________________________29
5.2.3 Function BFP 52E _______________________________________30
5.2.4 Suction pipe tables BFP 52E ________________________ 31
5.2.4.1 Overhead Tank _________________________________________ 31
5.2.4.2 Underlying Tank ________________________________________ 31
5.2.4.3 Purging _________________________________________________31
6. PREHEATER______________________________________________________________ 32
6.2.1 Function FPHB 5_________________________________________32
6.2.2 Function FPHB 5-LE____________________________________32
6.2.2.1 LE-valve ________________________________________________32
7. ELECTRICAL EQUIPMENT LMO24../LMO44.../LOA24.._ 33
7.1 Wiring diagram 2-stage___________________________________________33
7.1.1 Component list____________________________________________34
7.1.2 Function LMO24../LMO44.../LOA24..____________ 34
7.1.3 Technical data_____________________________________________ 35
8. FAULT LOCATION______________________________________________________ 36
8.1 Burner will not start ________________________________________________36
8.2 Burner will not start after normal use ________________________36
8.3 Delayed ignition, burner starts; pulsation___________________ 36
9. OIL BURNERS MAINTENANCE INSTRUCTIONS ________ 37

4Bentone BF1
General
Varning
!
Important to think about!
Read this manual
• This manual should be followed by anyone who for any reason performs
work on the installation or its component parts.
• The manual is especially intended for authorized personnel.
• The manu al is to be considered as part of the burner and must always
be kept in the vicinity of the installation site.
• Enertech recommends that the burner be shut down
when the oil tank
is filled, and for six hours thereafter, to reduce the risk of blockages.
Safety instructions
The electrical installation must be carried out according to the high voltage
provisions and be performed in a professional manner, so that the risk of oil
leakage, fire or personal injury is avoided
Warnings
• The manual must be read before installation and start-up.
• This manual should be followed by anyone who for any reason performs
work on the installation or its component parts.
• The manual is to be considered as part of the burner and must always
be kept in the vicinity of the installation site.
• Ensure that the fresh air inlet to the room where the burner is located is
always open.
• The burner may only be installed by authorized personnel.
• Check that the burner is suitable for the boiler type.
• The burner must be installed in accordance with local legislation
regarding electrical safety and fuel supply.
• The burner is designed for oil viscosities ranged between 1.2 and 8.0
cSt at 20°C.
• The burner must be protected by at most a 10 A fast-blow or 6.3 A
slow-blow fuse.
• No burner safety system may be disconnected.
• The installation engineer must ensure that the boiler room is supplied
with sufficient fresh air in accordance with local standards.
• Cut the power and shut-off the fuel supply before performing service.
• Enertech recommends that the burner be shut down when the oil tank
is filled, and for six hours thereafter, to reduce the risk of blockages.
• The external temperature of the burner’s component parts may exceed
60°C.
• Ensure that the burner is protected from water spills, as its design will
not withstand such.
• Oil filters should be used.
• Only use spare parts recommended by Enertech.

5Bentone BF1
General
Electrical safety
• If any electrical connections are made other than those recommended
by Enertech, there is a risk of personal injury and equipment damage.
• The electrical installation must be carried out according to the high
voltage provisions and be performed in a professional manner, so that
the risk of oil leakage, fire or personal injury is avoided.
• The installation engineer must be especially careful to ensure that no
electrical wiring or oil lines are pinched or damaged during installation
or service
Assembly and Service
• If the boiler is equipped with an inspection hatch, the hatch should be
fitted with an interlock.
• Filters must be fitted to the oil supply line.
• Shut-off cocks must be fitted to the oil supply line.
• Oil lines must adhere to the current national standards of each respective
country.
Condensation in the flue
A modern burner works with lower surplus air and also often with smaller
nozzles than older types. This raises efficiency but also increases the risk of
condensation in the flue. The risk increases if the cross section of the flue
channel is too great. Flue gas temperatures should be above 60°C measured
0.5 m from the flue chimney.
If the burner is used together with a condensing boiler, working condensing,
the installation must have a chimney that manages this type of operating
conditions.
Measures to increase the temperature
• Insulate the flue in cold loft space.
• Install an insert flue.
• Install a Dragex draught stabilizer or equivalent (which dries and entilates
the flue during shutdown periods).
Adjusting the burner
In order to achieve correct adjustment flue gas analysis and temperature
measurements must be carried out. Otherwise there is a risk of soot build-
up, poor efficiency or condensate precipitation in the flue..

6Bentone BF1
General
Flange 1 Flange 2
Flange 3 Flange 4
12
ø89,5
136–150
12
10,3
25
130–150
ø89,7
125
ø90 4
10
125–150
ø90 5
10,3
ø89
172
B
228
226
290
145
1. TECHNICAL DATA
1.1 Dimensions BF1
1.1.1 Dimensions, flanges

7Bentone BF1
General
!Scale value applies to 0 mbar furnace pressure.
ø70
ø26
ø76
8,0-9,0
2,7-3,3 0,5-1,5
Boiler overpressure, mbar
Burner output, kW
-0,5
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
40 45 50 55 60 65 70 75 80 85 90 95 100 105
Scale
Burner output, kW
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
18,0
20,0
22,0
25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Stage 1
Stage 2
Nozzle assembly
1.2 Model BF1-2 K 76-26
Length of blast tube
Protrusion from ange, measurement B
Flange
1234
117 82 95 103 102
147 112 125 133 132
197 162 175 183 182
1.2.1 Burner output/ Basic settings
3,8 - 8,4 kg/h
45 - 100 kW

8Bentone BF1
General
1.3 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.
1.3.1 Burner with preheater
Allow for a reduction in oil quantity of 5–20% with preheating owing to:
• Temperature increases at the nozzle.
• Nozzle design.
• Capacity (the higher the capacity the lower the difference).
Pump pressure, bar
Gph 8 10 12 14 16 18 20 22 23 24
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 kg/h kW
0,40 1,33 16 1,49 18 1,63 19 1,76 21 1,85 22 1,96 23 2,06 25 2,17 26 2,21 27 2,26 27
0,50 1,66 20 1,86 22 2,04 24 2,20 26 2,37 28 2,51 30 2,64 31 2,77 33 2,84 34 2,90 34
0,60 2,00 24 2,23 26 2,45 29 2,64 31 3,00 36 3,18 38 3,35 40 3,52 42 3,59 43 3,67 44
0,65 2,16 26 2,42 29 2,65 31 2,86 34 3,38 40 3,58 43 3,78 45 3,96 47 4,05 48 4,14 49
0,75 2,49 29 2,79 33 3,08 36 3,30 39 3,72 44 3,94 47 4,16 49 4,36 52 4,46 53 4,55 54
0,85 2,83 33 3,16 37 3,47 41 3,74 44 4,19 50 4,44 53 4,68 56 4,91 58 5,02 59 5,13 61
1,00 3,33 39 3,72 44 4,08 48 4,40 52 4,71 56 4,99 59 5,26 62 5,52 65 5,64 67 5,76 68
1,10 3,66 43 4,09 48 4,48 53 4,84 57 5,36 64 5,69 67 6,00 71 6,29 75 6,43 76 6,57 78
1,20 3,99 47 4,47 53 4,89 58 5,29 63 5,63 67 5,97 71 6,29 75 6,60 78 6,75 80 6,89 82
1,25 4,16 49 4,65 55 5,10 60 5,51 65 5,96 71 6,32 75 6,66 79 6,99 83 7,14 85 7,30 86
1,35 4,49 53 5,02 59 5,50 65 5,95 70 6,54 78 6,94 82 7,31 87 7,67 91 7,84 93 8,01 95
1,50 4,98 59 5,58 66 6,11 72 6,60 78 7,39 88 7,84 93 8,26 98 8,66 103 8,86 105 9,05 107
1,65 5,49 65 6,14 73 6,73 80 7,27 86 7,69 91 8,16 97 8,60 102 9,02 107 9,22 109 9,42 112
1,75 5,82 69 6,51 77 7,14 85 7,71 91 8,29 98 8,79 104 9,26 110 9,72 115 9,93 118 10,15 120
2,00 6,65 79 7,45 88 8,18 97 8,81 104 9,39 111 9,95 118 10,49 124 11,01 131 11,25 133 11,50 136
2,25 7,49 89 8,38 99 9,18 109 9,91 117 10,56 125 11,20 133 11,81 140 12,39 147 12,66 150 12,94 153
The table applies to oils with a viscosity of 4.4 mm2/s (cSt) at a density of 830 kg/m3.
1.4 Nozzle table, 8-24 bar
Nozzle 60° Solid/Hollow cone
80° Solid/Hollow cone
Pump pressure: Fuel oil 1 8 - 24 bar
1-stage 10 bar (8 - 12 bar)
2-stage 20 bar (15 - 24 bar)
Pump pressure: Kerosene 8 - 12 bar
1-stage 9 bar (8 - 10 bar)
2-stage 11 bar (10 - 12 bar)

9Bentone BF1
General
23 4
7
1
10
5
6
8
9
523 25
21 19
7
6
17
20 18
16
22
24
26
1.5 Description

10 Bentone BF1
General
15
14
13 5
211 12 1
10
1.5.1 Components
1. Brake plate
2. Nozzle
3. Fan housing, front
4. Ignition transformer
5. Separating screw
6. Oil burner control
7. Electrical contact X1 (refer to wiring diagram)
8. Motor
9. Capacitor
10. Preheater, where fitted
11. Ignition electrode
12. Ignition cable
13. Photoresistor
14. Inspection glass
15. Nozzle assembly adjustment
16. Cover plate
17. Oil pump
18. Air regulator second stage
19. Air intake
20. Air flow indicator
21. Fan housing, rear
22. Air regulator, first stage
23. Damper motor M2
24. Electrical contact, second stage
X5 and X6 (refe to wiring diagram)
25. Contact damper motor
26. Screw lock adjustment, first stage

11Bentone BF1
General
1.6 Declaration of concordance/
conformity
Manufacturer: Enertech AB, Bentone Division
Street address: Näsvägen
SE-341 34 Ljungby, Sweden
Postal address: Box 309
SE-341 26 Ljungby, Sweden
Product: Oil burner
Type: BF1, B 1, B 2, B 9, B 10, B 11, B 20, B 30,
B 40, B 45,B 50, B 55, B 60, B 65, B 70, B 80,
ST 97, ST 108, ST 120, ST133, ST 146
Certicate TÜV Süddeutschland
Certicate No Burner
08128915006 BF1
0111110535004 B1
0207110535005 B2
02119815001 ST97, ST108, ST120, ST133, ST146
02119815002 B9, B10, B11
02119815003 B20, B30, B40, B45
02119815004 B50, B60, B70, B80
040588622001 B55
040588622002 B65
Enertech AB declares under its sole responsibility that the above-
named products are in conformity with the following standard(s) or
other normative document(s) and full the applicable provisions of the
below-mentioned EC Directives.
Document:
EC directive:
EN 267
2004/108/EC
2006/95/EC
2006/42/EC
92/42/EG
Electromagnetic compatibility
Low voltage Directive
Machinery Directive
Boiler Efciency Directive
Because the burner is deemed to conform to the above-mentioned
standards and directives, it holds the CE marking.
Enertech AB Bentone Division is quality certied according to
SS-EN ISO 9001:2000.
Ljungby, den 16.10.2007
Sven-Olov Lövgren
.......................................................

12 Bentone BF1
General
2. INSTALLATION
2.1 Delivery checks
Check that everything has been delivered and that the goods are not
transport damaged. Any delivery faults must be reported to the supplier.
Transport damage must be reported to the forwarder.
2.2 Preparations for installation
Check that the burner’s measurements and capacity range is suitable for
the boiler in question. The power information on the data plate refers to the
burner’s max. and min. power.
2.3 Oil supply
In order to achieve good operational reliability it is important that the oil
supply system is laid out correctly.
Observe the following:
• Choice of pipe diameters, pipe lengths and height differences (refer to
pump instructions).
• Piping should be run with a minimum of joints/compression fittings.
• Pipework must be laid out so that oil hoses are not subjected to
tension or overbending when the burner is swung out or removed for
service.
• The oil filter should be installed so that the filter cartridge can easily be
replaced
2.4 Electrical connection
Before electrical installation is begun, electricity must be switched off at
the main switch. If the boiler has a 7-pole or a 4-pole Eurostecker (only on
2-stage burners), these often fit directly to the burner. Otherwise use the
connectors supplied. The operating thermostat, the max. thermostat and the
inspection hatch (where fitted) interlock can then be wired in series on the
incoming phase connected to L1 or connected between T1 and T2. In the
first mentioned case a jumper is installed between T1 and T2.
(Refer to connection in the section Electrical equipment).
2.5 Choice of nozzle
(Technical data): Recommended nozzle and nozzle table.
2.6 Brake plate and airflow setting
Before operations basic burner setting may be made according to the
diagram. (Refer to basic settings). Note that this only refers to the basic
setting; the setting must be adjusted after the burner has been started.
At this time flue gas analysis and soot measurement must be carried out.
!If any electrical connection is used other than that recommended
by Enertech, there may be a risk of equipment damage and personal injury.

13Bentone BF1
General
Oil pipes
E
E
X1
X2
2.7 Burner installation
2.7.1 Hole pattern
Check that the hole pattern matches the flange supplied.
(Refer to Technical data.)
2.7.2 Burner installation
1. Install the flange and the gasket on the boiler.
2. Attach the front piece to the flange.
3. Insulate between the burner register and the boiler cover for reduced
heat radiation.
4. Install the selected nozzle. (Refer to Technical data.)
5. Install the brake plate and check the ignition electrodes (refer to Burner
service.).
6. Install the burner body to the front piece and lock with screw (E).
2.7.3 Oil pipes
1. Check the oil pipe dimensions. (Refer to Pump Instructions.)
2. The oil filter should be installed in the oil supply line. If an air separator is
fitted, the oil filter should be installed before the air filter to increase the
life span of the filter.
3. For one-pipe systems the return plug must be removed. (Refer to
Pump Instructions.)
4. When installing oil hoses, check that the supply and return hoses are
connected to the correct connections on the oil pump. The hoses
must be run so that they are not bent or tensioned.
5. Purge the oil system. The oil pump will be damaged if it is run dry.
6. The vacuum should not be lower than 0.3 bar depression in the suction
line at start up.
2.7.4 Electrical connection
If the boiler lacks ready-connected plugs, connect using the supplied plug,
X2 in accordance with the wiring diagram.
1. Disconnect the power at the main switch.
2. Wire the Eurostecker X2 as in alt. 1–3 (refer to Electrical equipment).
3. Connect the Eurostecker X2 to the burner.
4. Switch on the power at the main switch.

14 Bentone BF1
General
3. BASIC SETTINGS
3.1 Example of basic setting for two-stage burners
3.1.1 Choice of nozzle
Burner output Max 38 kW
Min 50 kW
Estimated nozzle output: 80/11,86* = 6,75 kg/h
The nozzle output is calculated for two-stage burners with a nozzle at
maximum load.
Choice of nozzle according to the table. (See technical data).
Choice of nozzle is based on the maximum load, while minimum load is set
by the choice of pump pressure.
According to the nozzle table, this provides the following nozzle.
Nozzle: 1,25 Gph
Pump pressure max. load: 20 bar
Power in max. load: 6,66 kg/h => 6,66 x 11,86* = 79 kW
Pump pressure min. load: 8 bar
Power in min. load: 4,16 kg/h => 4,16 x 11,86* = 49 kW
* Calorc value Light oil = 11,86 kWh/kg
3.1.2 Basic settings
The setting value for maximum load 80 kW and minimum load 50 kW
according to the basic settings tables. For the correct setting procedures,
see 3.1.3 Nozzle assembly adjustment and 3.1.4 Air intake adjustment.
(See technical data ...)
Air settings Max 21,5
Min 5,5
Nozzle assembly Max 21
Min 21

15Bentone BF1
General
M
X
Z
Y
3.1.3 Nozzle assembly adjustment
The burner is fitted with a regulator which changes the brake plate position
in the blast tube. This is used to set the correct pressure drop across the
combustion assembly and thereby achieve good combustion without
pulsation.
The setting to be chosen is dependent among other things on set output
and furnace pressure.
Brake plate setting
• Less diffusion: turn screw to left.
• More diffusion: turn to right.
Setting brake plate position affects air flow. It is therefore always
necessary to adjust the air with the burner air regulator afterwards.
3.1.4 Air intake adjustment
For two-stage burners, the amount of air is set in two different positions.
When performing adjustments, the maximum load must always be adjusted
first. This is because adjusting the air damper for the maximum load may
affect the air quantity for the minimum load. The maximum load is adjusted
by turning the air regulator (Y). The air setting at maximum load will then
operate so that when the boiler is calling for the maximum load, the damper
motor opens completely and the amount of air for combustion is controlled
by the air regulator (Y). Minimum load is set by loosening the screw (X) and
adjusting the control plate (Z) for the damper powered by the damper motor.
3.1.5 Procedure for setting the amount of air
The air quantity setting for the maximum load is adjusted by turning screw (Y)
with an Allen key. How open the damper must be 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. To adjust the burner as quickly and
as easily as possible, adjustments should always start with the maximum
load, as adjustments here also affect the minimum load.
Set the minimum load by adjusting the control plate (Z). By changing settings
on the control plate towards the higher values on the scale, the opening
of the damper powered by the damper motor increases, thus increasing
the amount of air for the combustion process. To reduce the amount of
air, perform the opposite adjustment. When adjusting the minimum load,
you should always make sure that the damper for maximum load is open
far enough so that it has no significant effect on the amount of air for
the minimum load. The adjustment should be performed alternately: first
adjustment of the minimum load followed by adjustment of the maximum
load and then repeat the procedure unless acceptable combustion is
achieved.
3.1.6 Inlet cone, air adjustment
Airflow is also affected by the position of the inlet cone. However, it is
extremely rare that this needs to be adjusted; it should be left in the
standard STD position to achieve good starts and operations. (A cast-in
arrow on the fan housing indicates the position of the inlet cone. In addition
to the scale on the inlet cone casting, there is also a mark (M) indicating the
factory setting.)

16 Bentone BF1
General
D
3.1.7 Rotation of the air intake
The air intake of the burner can be rotated, although the rotation options are
limited due to the two-stage control. In principle it is possible to install the air
intake pointing upwards. It is also possible to rotate the air intake so that the
burner can be adapted to different environments.
To rotate the air intake, loosen the three screws holding the air intake and
the two screws holding the pump. Depending on how much the air intake
is to be rotated, cabling will be required and the two-stage control must be
removed. Then rotate the air intake to the desired position and tighten the
screws. Where appropriate, fit the cabling and two-stage control in a position
which allows for adjustment. When changing to certain positions on the air
intake, the screw for the air control must be removed and then fitted in a
position which allows the air to be adjusted.
The position of the air intake affects the air flow through the burner
somewhat. The position that provides maximum flow is with the air intake
pointing downwards.
3.1.8 Air duct
A hose connection air duct is available in three different dimensions: 48, 68,
and 78 mm outer diameter (D). The air duct is installed on the air intake at
the place where the grille is attached in the standard model

17Bentone BF1
General
!
Warning
!When servicing or replacing components that affect combustion, analyses and soot tests must be carried
out on the installation.
4. BURNER SERVICING
4.1 Warning
Service should be carried out after 3,000 operating hours, or at least once
per year.
Only authorized personnel may perform service.
Before any type of service work is begun, switch of the power at the main
switch and shut off the oil.
Exercise caution as parts which are exposed when the burner is taken apart
can be hotter than 60°C. The installation engineer must be especially careful
to ensure that no electrical wiring or oil lines are pinched or damaged during
installation or service.
4.1.1 Service position
4.1.1.1 Service position 1
1. Switch off the main power and disconnect the 7-pole Euro plug from
the burner.
2. Undo the screw which fastens the burner front piece to the fan housing,
but only so much as to allow the fan housing to be removed from the
burner front piece.
3. Remove the fan housing from the burner front piece and pull it
backwards until the combustion assembly is free of the burner front
piece.
4. Suspend the fan housing by the fan housing attachment point (for
joining the front piece to the fan housing) on the screw (for joining the
front piece to the fan housing) as illustrated to the left. If necessary,
tighten the screw somewhat to ensure that the burner is suspended
safely.något för att få brännaren att hänga säkrare.
4.1.1.2 Service position 2
1. Switch off the main power and disconnect the 7-pole Euro plug from
the burner.
2. Undo the screw which fastens the burner front piece to the fan housing,
but only so much as to allow the fan housing to be removed from the
burner front piece.
3. Remove the fan housing from the burner front piece and pull it
backwards until the combustion assembly is free of the burner front
piece.
4. Turn the screw into the front piece until there is a gap of approx. 5 mm
between the metal and the screw head.
5. Suspend the fan housing by the fan housing service attachment on
the screw used for joining the front piece to the fan housing, with the
motor upwards, as shown in the illustration to the left.

18 Bentone BF1
General
!When servicing or replacing components that affect combustion, analyses and soot tests must be carried
out on the installation.
4.1.1.3 Service position 3
1. Switch off the main power and disconnect the 7-pole Euro plug from
the burner.
2. Undo the screw which fastens the burner front piece to the fan
housing, but only so much as to allow the fan housing to be removed
from the burner front piece.
3. Remove the fan housing from the burner front piece and pull it
backwards until the combustion assembly is free of the burner front
piece.
4. Turn the screw into the front piece until there is a gap of approx. 5 mm
between the metal and the screw head.
5. Suspend the fan housing by the fan housing service attachment on the
screw used for joining the front piece to the fan housing, with the air
intake upwards, as shown in the illustration to the left.
4.1.2 Combustion assembly service
1. Switch off the main power and disconnect the 7-pole Euro plug from
the burner.
2. If so desired, service position 1 may be used.
3. Carry out a visual inspection of the combustion assembly and check
the various parts for defects.
4. Undo and remove the brake plate and the electrode package from the
oil pipe. Clean the brake plate as necessary.
5. Screw off the nozzle.
6. Install the nozzle. The nozzle may not be cleaned; it must be replaced
with a new nozzle if the existing one is considered defective.
7. Check the ignition electrodes. Replace as necessary (refer to Technical
data for electrode settings).
8. Install the brake plate and electrode package. Check that the distance
between the nozzle and brake plate is correct
(refer to Technical data).
9. Undo the screw that the fan housing is suspended from. Reassemble
the front piece and the fan housing and fasten them together.
10. Connect the 7-pole Euro plug and turn on the mains power.
11. Start the burner and check the combustion.

19Bentone BF1
General
F
G
!When servicing or replacing components that affect combustion, analyses and soot tests must be carried
out on the installation.
4.1.3 Preheater replacement
1. Switch off the main power and disconnect the 7-pole Euro plug from
the burner.
2. If so desired, service position 1 may be used.
3. Remove the brake plate and electrode package.
4. Disconnect the preheater cable from the preheater.
5. Screw off the nozzle.
6. Undo the nut that connects the oil pipe to the preheater.
7. Install the new preheater. Check the condition of the O-ring; replace
as necessary.
8. Connect the preheater cable.
9. Install the nozzle.
10. Install the brake plate and electrode package. Check that the distance
between the nozzle and brake plate is correct
(refer to Technical data).
11. Re-assemble the burner.
12. Connect the 7-pole Euro plug and turn on the mains power.
13. Start the burner and check the combustion.
4.1.4 Oil pump replacement
1. Switch off the main power and disconnect the 7-pole Euro plug from
the burner.
2. Disconnect the oil hoses from the oil pump.
3. If so desired, service position 3 may be used.
4. Remove the solenoid cable from the pump.
5. Remove the connecting pipe (G) from the pump.
6. Undo the screws (F) and pull out the oil pump.
7. Install the oil pump in the burner. Tighten the screws and attach the
connecting pipe (G). (It is important that the splines engage the pump
coupling correctly.)
8. Connect the oil hoses. (For conversions from one- and two-pipe
systems refer to the Pump instructions.)
9. Connect the 7-pole Euro plug and turn on the mains power.
10. Start the burner, purge the pump, adjust to correct pressure and check
combustion

20 Bentone BF1
General
H
!When servicing or replacing components that affect combustion, analyses and soot tests must be carried
out on the installation.
4.1.5 Fan motor replacement
1. Switch off the main power and disconnect the 7-pole Euro plug from
the burner.
2. If so desired, service position 2 may be used.
3. Remove the electrical connection from the motor.
4. Remove the electrical box retaining screw.
5. Remove the cable conduit entry to the ignition electrodes and the
preheater (where fitted) and remove the photocell cable from the motor
flange.
6. Undo the screws (H) to the motor flange, 5 pcs.
7. Lift away the motor.
8. Remove the drive coupling end from the motor shaft, loosen and
remove the fan wheel.
9. Install the fan wheel on the new motor, tighten the locking screw. The
fan wheel must be installed in the bottom position toward the motor
shaft. Install the drive coupling end.
10. Align and fit the motor flange to the fan housing. Pay attention to the
drive coupling so that it does not fall out, and also that it aligns
correctly in the drive coupling end of the motor and pump.
11. Bolt the motor flange and fan housing together. Tighten the screws
diagonally, and do not tighten hard one at a time. This is in order to
ensure the fan housing and the motor flange assume the correct
relative positions.
12. Place the cable conduit entry and the photocell cable in position.
13. Screw the electrical console in place.
14. Connect the motor wiring.
15. Join together the fan housing and the burner front piece.
16. Connect the 7-pole Euro plug and turn on the mains power.
17. Start the burner and check the combustion.