Enertech Bentone B2S Classic Technical specifications

Providing sustainable energy solutions worldwide
178 017 32
Installation- and maintenance instruction
B2S Classic

Contents
01. GENERAL................................................................................................................................... 5
Description .................................................................................................................................................................. 5
Declaration of conformity .......................................................................................................................................... 6
Safety directions ........................................................................................................................................................ 7
02. TECHNICAL DATA ..................................................................................................................... 8
Type designation B2 ................................................................................................................................................... 8
Dimensions ................................................................................................................................................................. 8
Burner capacity .......................................................................................................................................................... 8
Recommended nozzle ................................................................................................................................................ 8
Table of nozzles .......................................................................................................................................................... 8
03. INSTALLATION .......................................................................................................................... 9
Acceptance inspection .............................................................................................................................................. 9
Preparations for installation ...................................................................................................................................... 9
Distribution of oil ......................................................................................................................................................... 9
Electrical connections ............................................................................................................................................... 9
Choice of nozzle .......................................................................................................................................................... 9
Setting of the shrouded disc and air flow ................................................................................................................. 9
04. BASIC SETTINGS ................................................................................................................... 10
Nozzle ........................................................................................................................................................................ 10
Adjustment of the nozzle assembly ........................................................................................................................ 10
Air adjustment .......................................................................................................................................................... 10
Pressure in front of the shrouded disc ................................................................................................................... 10
05. MAINTENANCE ....................................................................................................................... 11
Suspension of burner ............................................................................................................................................... 11
Removing the blast tube .......................................................................................................................................... 11
Setting the ignition electrodes ................................................................................................................................ 11
Cleaning the fan wheel ............................................................................................................................................. 12
Trimming ................................................................................................................................................................... 12
Automatic air damper .............................................................................................................................................. 12
Service position electric package .......................................................................................................................... 13
Pump filter ................................................................................................................................................................. 13
06. INSTRUCTIONS PUMP TYPE BFP 41L3 .............................................................................. 14
Technical data ........................................................................................................................................................... 14
Components .............................................................................................................................................................. 14
Venting ....................................................................................................................................................................... 14
BFP 41L3 operating principle ................................................................................................................................... 15
Suction line tables .................................................................................................................................................... 16
Mounting/dismounting return plug .......................................................................................................................... 16
07. OIL FILTER BENTONE ........................................................................................................... 17
09. ELECTRICAL EQUIPMENT LOA24....................................................................................... 18
Wiring diagram ......................................................................................................................................................... 18
List of components .................................................................................................................................................. 19
Function ..................................................................................................................................................................... 19
Technical data ........................................................................................................................................................... 19
10. FAULT LOCATION ................................................................................................................... 20
Burner fails to start .................................................................................................................................................. 20
Burner fails to start after normal operation ........................................................................................................... 20
Delayed ignition, burners starts violently ............................................................................................................... 20

5171 155 06 05-01
01. GENERAL
Description
1. Shrouded disc
2. Preheater
3. Photoresistor
4. Electric contact X1,X2 (see wiring diagram)
5. Air damper
6. Oil pipe
7. Electrodes
8. Fan housing
9. Adjustment of nozzle assembly
10. Frame
11. Control box
12. Blast tube
13. Oil pump
14. Ignition transformer
15. Motor
16. Air adjustment
17. Suction plate
18 Fan housing, part
12 34
5
76
12
8910 11
13
14
15
16
18
17

171 901 07 15-01
Försäkran om överensstämmelse
Declaration of conformity
Konformitätserklärung
Déclaration de conformité
Brännare, Burner, Ölbrenner, Brûleur Certifikat TÜV Süddeutschland
Certifikat nr. Typ, Type:
08128915006 BF 1
0111110535004 B 1
0207110535005 B 2
02119815001 ST 97, ST 108, ST 120,
ST 133, ST 146
02119815002 B 9, B 10, B 11
Certifikat nr. Typ, Type:
02119815002 B 9, B 10, B 11
02119815003 B 20, B 30, B 40, B 45
02119815004 B 50, B 60, B 70, B 80
040588622001 B 55
040588622002 B 65
13129815007 B 45 MF, B 45-2 MF
Enertech AB försäkrar under eget ansvar att ovannämnda produkter är
i överensstämmelse med följande standarder eller andra regelgivande
dokument och uppfyller tillämpliga delar i EU direktiv.
Enertech AB declares under sole responsibility that the above mentioned
product is in conformity with the following standards or other normative
documents and follows the provisions of applicable parts in the following
EU Directives.
Enertech AB erklärt in eigener Verantwortung, dass obenstehende
Produkte mit folgenden Normen oder anderen normativen Dokumenten
und anwendbare Teile in EU-Direktiven in Übereinstimmung stehen
Enertech AB déclare sous sa seule responsabilité que les produits
désignés ci-dessus sont conformes aux normes et aux documents
normatifs suivants et satisfont aux critères applicables des directives CE
suivantes:
Dokument: EN 267 EN 60335
EU direktiv. EU Directives, EU-Direktiven, CE suivantes:
2004/108/EC Elektromagnetisk kompatibilitet, Electromagnetic compatibility EC-Richtlinie, Compatibilité électromagnétique
2006/95/EC Lågspänningsdirektivet, Low-voltage directive, Niederspannungs-Richtlinie, Directive sur les basses tensions
2006/42/EC Maskindirektivet, Machinery directive, Maschinen-Richtlinie, Directive sur les machines
92/42/EEC Verkningsgradsdirektivet, Efficiency directive, Wirkungsgrad-Richtlinie, Directive sur les exigences de rendement
Genom att brännaren uppfyller ovannämnda standarder och direktiv
erhåller brännaren CE - märkningen.
In that the burner conforms to the above mentioned standards it is
awarded the CE mark.
Indem der Brenner die obengenannten Normen und Richtlinien erfüllt,
erhält der Brenner die CE-Kennzeichnung.
Du fait de leur conformité aux directives mentionnées ci-dessus, les
brûleurs Bentone bénéficient du marquage CE.
Enertech AB, Bentone Division/
är kvalitetscertifierat enligt/
is quality certified according to/
ist nach dem Qualitätsmanagement /
est certifiée à la norme de qualité
SS-EN ISO 9001:2008
Ecodesign Directive 2009/125/EC
(regulations (EU) 811/2013, 812/2013, 813/2013, 814/2013 where applicable) applies to following models.
Detailed ecodesign information can be downloaded at: www.bentone.com/ecodesign
BF 1 M1V 87-20
BF 1 N1V 56-14
BF 1 NU1V 60-14
BF 1 FU 63-16
BF 1 FUV 63-16
BF 1 R 69-16
BF 1 RV 69-16
BF 1 S 70-21
B 1 RL 64/16
B 1 EOS
B 1 L35
B 2 SL 70/21
B 2 75/24
B 2 SV 75/24
B 2 EOS
B 2 L55
ST 133 L35
ST 133 L55
ST 133 EOS 62
Ljungby, Sweden, 150902 (02/09/15)
ENERTECH AB Bentone Division
Box 309
SE-341 26 Ljungby Sweden
Håkan Lennartsson

7171 355 02 07-01
01. GENERAL
- The contents of this manual are to be observed by all who work for any
reason on the unit and its appertaining system parts.
- This manual is intended especially for authorised personnel.
- This manual is to be regarded as part of the burner and shall always
be available near the place of installation.
- Ensure that the supply of fresh air to the place where the burner is fitted
is always unobstructed.
- Bentone recommends that the burner is switched off while the cistern is
being filled and for a period of six hours after filling to reduce the risk of
clogging.
- Ensure that the burner is protected against direct spraying with water.
- An oil filter should be fitted.
Safety directions
The electrical installation shall be made according to valid regulations for
heavy current and in a professional way, so that the risk of leaking oil, fire
or personal injury is avoided.
Care should be taken by the installer to ensure that no electrical cables or
fuel/gas pipes are trapped or damaged during installation or service/
maintenance.
Condensation in chimney A modern burner works with less air surplus and often with a smaller nozzle
than older models. This improves the efficiency but increases also the risk
of condensation in the chimney. The risk is greater if the cross sectional
area of the chimney flue is too big. Temperature of the flue gases should be
higher than 60°C measured 0.5 m from the top of the chimney.
Measures to raise the temperature:
Insulate the chimney thermally in cold loft area.
Fit an insert tube in the chimney.
Install Dragex or equivalent (to dry and ventilate the chimney during stand-
still).
Setting the burner A flue-gas analysis and measuring of the temperature should be done to
facilitate a correct setting. There is otherwise a risk of soot, poor efficiency
or condensation in the chimney.

8
Recommended nozzle
Both 60° and 80° and both types S and H can be used. Which nozzle type
gives the best result depends on the shape of the combustion chamber. In
the first place 60°S should be used .
Table of nozzles
Without preheater
Length of Projecting from
blast tube flange,
size B
138 113
188 163
171 535 23 06-01
02. TECHNICAL DATA
Type designation B2
Model S
Dimensions
ø89,5 21
10,5
ø89
B
222
176 82
150
300
Burner capacity
8 bar 9 bar 10 bar 11 bar 12 bar
Gph kg/h kW kg/h kW kg/h kW kg/h kW kg/h kW
0,75 2,63 31,2 2,79 33,1 2,94 34,8 3,08 36,5 3,22 38,2
0,85 2,96 35,1 3,14 37,2 3,31 39,2 3,47 41,1 3,63 43,0
1,00 3,33 39,4 3,53 41,8 3,72 44,1 3,90 46,2 4,08 48,3
1,10 3,79 44,9 4,02 47,7 4,24 50,2 4,45 52,7 4,64 55,0
1,20 3,98 47,2 4,22 50,0 4,45 52,7 4,67 55,3 4,87 57,8
1,25 4,21 49,9 4,47 52,9 4,71 55,8 4,94 58,5 5,16 61,1
1,35 4,62 54,8 4,90 58,1 5,17 61,3 5,42 64,3 5,66 67,1
1,50 5,22 61,9 5,54 65,7 5,84 69,2 6,13 72,6 6,40 75,8
1,65 5,44 64,4 5,77 68,4 6,08 72,0 6,38 75,6 6,66 78,9
1,75 5,86 69,4 6,21 73,6 6,55 77,6 6,87 81,4 7,18 85,0
2,00 6,64 78,6 7,04 83,4 7,42 87,9 7,78 92,2 8,13 96,3
2,25 7,47 88,5 7,92 93,9 8,35 98,9 8,76 103,8 9,15 108,4
Burner output kW
Boiler overpressure mbar
130-150
0,5
3,1-8,2 kg/h
37,0-97,0 kW
-0,5
0,0
1,0
1,5
2,0
2,5
30 40 50 60 70 80 90 100

9171 635 04 05-01
03. INSTALLATION
Acceptance inspection
Ensure that everything is delivered and that there is no transport damage.
If there is anything wrong with the delivery, please report it to the supplier.
Any transport damage should be reported to the forwarding company.
Preparations for installation
Ensure that the size and capacity range of the burner are suitable for the
boiler. Power data on the data plate refer to the minimum and maximum
power of the burner.
Distribution of oil
To ensure satisfactory operation it is essential that the oil distribution sys-
tem is correct.
Observe the following:
- See Pump instructions for choice of tube diameter, tube length and height
difference.
- Fix the tubing with a minimum number of screw fittings.
- Fix the tubes so that the oil hoses are not subjected to tensile stress or
sharp bending when swinging out the burner or removing it for service.
- Fit the oil filter so that the filter cartridge can easily be replaced, see Oil
filter Bentone.
Electrical connections
The main power switch must be turned off before beginning the electrical
installation. If the boiler has a 7-pole contact device type Eurostecker it will
most often fit the burner direct. Otherwise use the accompanying contact
device. The operating thermostat and maximum thermostat, and also any
fire-door switch, can then be connected in series with the incoming phase
or be connected between T1 and T2. In the first case T1 and T2 are to be
strapped.
If another electrical connection is used than the one recommended by
Bentone, there might be a risk of material damage or personal injury.
Choice of nozzle
See under Technical Data: Recommended nozzle and table of nozzles.
Setting of the shrouded disc and air flow
The burner is pre-set on delivery in relation to the nozzle provided. If the
size of the nozzle is changed the burner can be initially set according to
“Basic settings”. Note that it is only a question of a basic setting that
should be trimmed when the burner is started. This should include a flue
gas analysis and measurement of soot.
V
!
Warning

10 171 725 06 06-01
04. BASIC SETTINGS
Nozzle
Burner output without preheater
Air adjustment
Adjustment of the nozzle
assembly
Pressure in front of the shrouded disc
Pump pressure, bar
Nozzle assembly, scaleAir, scale
Fan pressure, mbar
Burner output, kW
Burner output, kW
9
2
5
6
10
8
7
4
3
1
0
70 80 100
60 90504030
Burner output, kW
70 80 100
60 90504030
2
5
6
4
3
1
Burner output, kW
70 80 10060 90504030
14
2
6
8
16
12
10
4
70 80 10060 90504030
0,75gph 1,00gph 1,25gph 1,50gph 1,75gph
2,00gph
14
8
16
12
10

11
05. MAINTENANCE
Suspension of burner
During service the burner can be hung up on the screw in the burner flange.
For this there is a hole on the right side of the burner.The blast tube,
shrouded disc, nozzle and electrodes are then easily accessible.
Removing the blast tube
1. Loosen the two fastening screws one turn.
2. Turn to the right and withdraw the blast tube.
Setting the ignition electrodes
Proper setting of the electrodes is essential to ensure satisfactory opera-
tion of the burner. If the spark hits the metal the efficiency will be lower and
will also cause radio disturbance. There is also a risk that carbonisation
will occur. Since the electrode pack is of the factory-set twin electrode
type it will be necessary to bend the wires to make any adjustment.
171 755 05 02-01
1,8-2,2
6,0-7,0
1,2-1,6

12 171 755 07 02-01
05. MAINTENANCE
Cleaning the fan wheel
The outer fan housing half is kept firm by 5 screws.
Trimming
If the size of the nozzle is changed, it is suitable to first set the nozzle
assembly and air according to the recommendations in section Basic settings.
For the individual boiler installation, adjustments can then always be made
to optimise economy, operational reliability and environmental effects.
The most important instruments for the task are one instrument for flue-gas
analysis and a soot meter.
The principle of the adjustment is:
- reduce the air, either with the air regulation or the nozzle assembly, until
a soot coefficient 0.5–1 is achieved.
- increase the air to give a safety margin of 0,5-1% CO2before soot is created.
To throttle more with the shrouded disc (smaller reading on the nozzle
assembly scale), gives a short, more bluish flame and often better com-
bustion, but if one goes too far there will be starting problems. Throttling
less with the shrouded disc gives a longer and more yellowish flame and
can give a smoother start.
The pressure in front of the shrouded disc can be utilised as an aid in the
adjusment. Recommended pressure, see under Basic settings. Remember
to refit the rubber gasket on the pressure outlet after making the adjustments.
Automatic air damper
Remove the blast tube. Unscrew the 3 screws holding the cover on the
back of the burner. Check that the air damper is moving easily.

13
05. MAINTENANCE
Service position electric package
Loosen the hexagon nut from the stud bolt. Pull the electric package
backwards and rotate it ca. 90° clockwise.
When required the electric package can be suspended in the cables.
Pump filter
When changing pump filter, see chapter 06.
171 755 19 05-01

14 171 805 04 03-01
Technical data
Viscosity range: 1,3-12,0 mm2/s
Pressure range: 7-15 bar
Oil temperature: -10 to+70°C
.
Components
1. Nozzle connection G 1/8"
2. Pressure gauge connection G 1/8"
3. Pressure control 4 mm Allen key
4. Cartridge filter
5. Vacuum gauge connection G 1/8"
6. Return pipe G 1/4"
7. Suction pipe G 1/4"
8. Return plug
Venting
Venting is only necessary in a one-pipe system. In two-pipe systems the
pump is automatically vented by the return pipe.
Changing cartridge filter
Unscrew the filter screw from the cover using a 4 mm Allen key and pull out
the filter cartridge. Insert a screwdriver between the filter and screw, if
necessary, to carefully ease out the filter. Replace the old filter by a new
one, pushing it on the filter screw. Reassemble the cartridge and tighten
lightly.
Remember to change the O-ring.
06. INSTRUCTIONS PUMP TYPE BFP 41L3
1(3)

15 171 805 04 03-01
06. INSTRUCTIONS PUMP TYPE BFP 41L3
BFP 41L3 operating principle
When the pump is started, oil is drawn from the suction port (S) through
the filter (H) to the suction port (C) of the gear-set.
The oil then moves to the pressure side of the gearwheel and is thus press-
urised. The pressure is controlled and maintained at a constant pre-set
level by diaphragm (D) of the control valve (P1)
The control valve (P1) distributes the oil supplied by gear-set (C) between
the nozzle connection (E) and the return port of the pump (R).
The amount of oil consumed is determined by the pressure set on the
control valve (P1) and by the size of the oil nozzle in the nozzle line.
The control valve (P1) operates as follows:
- When the oil attains opening pressure, the port to the return side opens.
- The diaphragm and the spring keep a constant pump pressure at the set
value.
- If the pump becomes overloaded, i.e. if an attempt is made to take out
more oil than the gear-set can deliver in the prevailing circumstances, the
oil pressure will fall below the set value causing the valve to close, by
diaphragm (D), to the return port (R) and return to the starting position.
This can be remedied by:
- Lowering the pump pressure.
- Reducing the amount of oil delivered, i.e. changing to a smaller nozzle.
- Changing to a pump with higher capacity.
2(3)
H
A
G
R
S
P
V
C
NC
P1
E
D

16 171 805 04 03-01
06. INSTRUCTIONS PUMP TYPE BFP 41L3
Suction line tables
One-pipe system
Height Pipe diameter
H ø4 mm ø5 mm ø6 mm
mm m m
With an underlying tank a one-pipe
system is not recommended
Two-pipe system
Height Pipe diameter
H ø6 mm ø8 mm ø10 mm
mm m m
0 17 53 100
-0,5 15 47 100
-1,0 13 41 99
-1,5 11 34 84
-2,0 9 28 68
-2,5 7 22 53
-3,0 5 15 37
-3,5 3 9 22
4,0 1 3 6
The suction line tables consist of theoretically calculated values where the
pipe dimensions and oil velocity have been matched so that turbulent flow
will not occur. Such turbulence would otherwise result in increased pressure
losses and noise in the piping. A piping system consists normally of drawn
copper pipes and four bends, a non-return valve, a shut-off valve and a pre-
filter.
The sum of these individual resistances is negligible. The tables do not
include any lengths exceeding 100 m because experience shows that
longer lengths are not needed.
The tables apply to standard fuel oil of normal commercial quality according
to current standards. On commissioning with an empty tube system the
oil pump should not be run without oil for more than 5 minutes.
The tables state the total length in metres of the suction line at a nozzle
capacity of 2.5 kg/h. Maximum allowed pressure at the suction and return
port is 2.0 bar.
One-pipe system
Height Pipe diameter
H ø4 mm ø5 mm ø6 mm
mmmm
4,0 51 100 100
3,5 45 100 100
3,0 38 94 100
2,5 32 78 100
2,0 26 62 100
1,5 19 47 97
1,0 13 31 65
0,5 6 16 32
Two-pipe system
Height Pipe diameter
H ø6 mm ø8 mm ø10 mm
mmmm
4,0 33 100 100
3,5 31 98 100
3,0 29 91 100
2,5 27 85 100
2,0 25 79 100
1,5 23 72 100
1,0 21 66 100
0,5 19 60 100
Mounting/dismounting return plug
One pipe system Two pipe system
3(3)
H
H

17 171 825 01 02-01
07. OIL FILTER BENTONE
We recommend the use of a fine filter in front of the oil burner. For
certain markets this is delivered enclosed in the carton.
Specification Oil filter for light oil with disposable filter cartridge
Connection: 1/4"
Filter grade: 20 µm
Water repellent
Filter area: 0.17 m2
Direction of flow from the outside in
Transparent bowl
Connection for vacuum gauge
Max. pressure: 2 bar
Max. temperature: 70°C
Max. flow: 85 kg/h (100 l/h)
For a 2-pipe system the maximum flow is determined by the constant
pressure capacity of the pump
For a 1-pipe system the nozzle capacity is decisive
Suspension console
Installation and changing the filter The filter may either hang on the lines or be fixed to the wall with the aid of
the accompanying suspension bracket. A shut-off valve should be fitted in
front of the filter to facilitate changing the filter cartridge on installations
that are pressurised by gravity.
Options for changing the filter cartridge:
A – yearly
B – when the vacuum becomes 0.4 bar greater during operation than when
still
C – when the entire filter appears to be dirty
Remember to remove the flat gasket between the cartridge and cover, and
fit a new one each time the filter cartridge is replaced. Also replace the O-
ring between the plastic hood and cover. The air will easily flow through a
new filter cartridge. All the air will therefore be evacuated and the filter will
be filled with oil. If the oil is subjected to a certain vacuum during operation,
gases will be emitted and collected in the filter. Air will only pass through
the filter with difficulty now that the paper is oily. Consequently, the level in
the bowl will drop. The effective area of the filter will then only consist of a
small part at the bottom. In step with contamination of the filter the level
will rise and thus indicate the degree of contamination. This phenomenon,
which does not occur in installations that have pressurised oil, does not
affect the degree of filtering.
NOTE! Do not pour oil into the drain. Your local municipal recycling centre will
accept minor quantities of contaminated oil.
O-ring
Gasket

18 171 855 18 04-01
09. ELECTRICAL EQUIPMENT LOA24...
Wiring diagram
1(2)
(1)(2)
*

19 171 855 18 04-01
2(2)
09. ELECTRICAL EQUIPMENT LOA24...
List of components
A1 Oil burner control R1 Photoresistor
A2 Twin thermostat S3 Main switch
F1 Fuse, max. 10A T1 Ignition transformer
H1 Alarm lamp Y1 Solenoid valve
H2 Signal lamp (optional) X1 Plug-in contact, burner
M1 Burner motor X2 Plug-in contact, boiler
P1 Time meter (optional)
Mains connection and fuses in accor-dance with local regulations.
Function
1. Switch on operating switch and twin thermostat
The burner motor starts, an ignition spark is formed, the prepurge goes
on till the prepurge period expires and the solenoid valve opens (2).
2. Solenoid valve opens
Oil mist is formed and ignited. The photocell indicates a flame.
(1) The ignition spark goes out 15 s. after flame indication (LOA24.171...).
(2) The ignition spark goes out 2 s. after flame indication when the ignition
transformer is connected to terminal 7 (LOA24.173...).
3. The safety time expires
a. If no flame is established before this time limit the control cuts out.
b. If for some reasons the flame disappears after this time limit, the
burner will make an attempt to re-start.
3-4. Operating position
If the burner operation is interrupted by means of the main switch or the
thermostat, a new start takes place when the conditions in accordance
with point 1 are fulfilled.
The oil burner control cuts out
A red lamp in the control is lit. Press the reset button and the burner
re-starts.
Post-ignition
(2) If a post-igniton of 15 s. is wanted, move the ignition transformer from
terminal 7 to terminal 6 (LOA24.173...).
Technical data
Pre-ignition time: 13 s
Pre-purge time: 13 s
(1) Post-ignition time: 15 s
(2) Post-ignition time: 2 s
Safety lock-out time: 10 s
Reset time after lockout: » 50 s
Reaction time on flame failure: max. 1 s
Ambient temperature: from - 20 to +60°C
Min. current with flame established: 65 µ A
Max. photo current at start: 5 µ A
Enclosure: IP 40
(Under voltage proof only LOA24...)
Control of photo current Current through photo unit is measured with a d.c. ammeter (a moving coil
instrument connected in series with the photo unit).
Outer electrical connection * If there is no plug-in contact (X2) on
the boiler, connect to the contact
enclosed. In case the twin thermo-
stat is in series on incoming phase
L1, a loop between the terminals
T1 and T2 is necessary.
X1
X2

20 171 955 05 08-01
Check that H.T. leads are sound and are not
arcing other than at electrode gap
Confirm with new control. (NB. it is advisable to
change the photocell if also changing control)
10. FAULT LOCATION
Burner fails to start
Remedies
Possible causes
Check ignition transformer. Check electrode
gap and porcelain
Reset overheat device. Find reason for its
operation and rectify
Check or replace fuse if necessary. Check
reason for failure
Check operation of magnetic valve
Check that photocell is not seeing ambient light
Motor runs Flame instability
Burner pre-purges
Burner locks out
Motor runs
Photocell failed
Control faulty
Confirm with new photocell
Burner pre-purges
Burner locks out No oil
No flame occurs
Check oil supply to burner - check that pump
is not airlocked
Burner fails to start
Lamp not lit
Fuse has blown
Appliance thermostat has not reset
Appliance overheat device has operated
Control relay or photocell defective
Adjust thermostat
Check by replacement
Motor runs
Burner runs to lockout
No oil being delivered
Excessive flue draught is preventing
flame establishment
No spark
Check that tank, oil lines, fire valve, pump and
nozzle are all in good order
Rectify condition
Excessive draught Adjust the burner
Burner pulsates on start-up Nozzle partly blocked
Oil pressure too low
Flue blocked or damaged
Fan slipping on shaft
Pump coupling loose or worn
Replace nozzle
Check and adjust
Check and rectify
Check and retighten
Delayed ignition Check the electrode adjustment, see diagram
Check electrodes for damage
Check H.T. leads for damage
and disconnection
Check and replace
Incorrect head settings
Low oil pressure
Photocell not seeing light
Excess air
Burner pulsates on start-up
only with hot flue
Burner starts violently
False light
No spark
Check oil pressure
Check that photocell is clean and unobstructed
Check nozzle to burner head dimension and
electrode position
Adjust air damper
Flame occurs
Situation
Delayed ignition, burners starts violently
Burner fails to start after normal operation