Bentone ST 120 Technical specifications

Providing sustainable energy solutions worldwide
Installation- and maintenance instruction
ST 120
R RV LMO14
AS 47
Translation of the original instructions.
CR00118 178 172 15-1 2020-12-10

2Bentone
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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
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3Bentone
General
Table of contents
1. General Information __________________________________ 4
2. Technical data _______________________________________ 7
2.1 Dimensions ST 120 _______________________________ 7
2.2 Dimensions, flanges _______________________________ 8
2.3 Burner installation _________________________________ 8
2.5 Working field ST 120R/RV __________________________ 9
2.4 Setting of brake plate and air flow ___________________ 9
2.6 Recommended nozzles and pressures ______________ 10
2.7 Nozzle table, 8-15 bar ____________________________ 10
2.8 Description______________________________________ 11
3. General instructions _________________________________ 12
3.1 General instructions ______________________________ 12
3.2 Delivery inspection _______________________________ 13
3.3 Preparing for installation___________________________ 13
3.4 Oil distribution ___________________________________ 13
3.5 Electrical connection______________________________ 13
3.6 Burner installation ________________________________ 14
4. Basic settings ______________________________________ 15
4.1 Example of basic settings _________________________ 15
5. Burner servicing ____________________________________ 18
5.1 Servicing _______________________________________ 18
5.2 Servicing the combustion device ___________________ 18
5.3 Replacing the oil pump ___________________________ 20
5.4 Replacing the fan motor and fan wheel ______________ 21
5.5 Servicing the air intake and intake cone______________ 22
5.6 Replacing the entire electrical package ______________ 22
5.7 Replacing individual electrical package components ___ 23
6. Instructions Pump __________________________________ 24
6.1 SUNTEC AS ____________________________________ 24
7. Oil burner control ___________________________________ 30
7.1 Wiring diagram _________________________________ 30
7.2 Colour codes LMO14/24 __________________________ 32
7.3 Fault codes LMO14/24 ___________________________ 32
8. Fault Location ______________________________________ 33
8.1 Burner will not start_______________________________ 33
8.2 Burner will not start after normal use ________________ 33
8.3 Delayed ignition__________________________________ 34
8.4 Noise in pump ___________________________________ 34
8.5 Pump pressure __________________________________ 34
9. Log of flue gas analysis ______________________________ 35
10. Oil burners maintenance instructions _______________ 36

4Bentone
1. General Information
This Installation and Maintenance manual:
• is to be regarded as part of the burner and must always be kept near
the installation site
• is intended for use by authorised personnel
• must be read prior to installation
• must be observed by all who work with the burner and associated
system components
• work with the burner may only be carried out by certified installers/
personnel
• Enertech AB is not liable for any typographical errors and reserves the
right to make design changes without prior notice.
• 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

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• The electrical installation must be professionally carried out in
accordance with applicable high voltage regulations, as per Enertech’s
recommendations.
• Before servicing, shut off the fuel supply and turn off the power to the
burner.
• 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 thedesign or use accessories which have not
been approved by Enertech in writing.
• Prior to operation, the following points must be checked:
-fitting and installation work has been completed and approved
-electrical installation has been correctly performed
-flue gas ducts and combustion air ducts are not blocked
-all actuators and control and safety devices are in working order and
correctly set
• After commissioning, if a steady red light on the burner control is
displayed, contact your installation technician.

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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.

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165 205 23
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
* Min. recommended distance to floor.
Ø B C D E F G H *I
ST120 89 194 169 54 229 148 275 200
C
A
øB
D
F
E
G
H

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2.2 Dimensions, flanges
Flange 2
10,3
25
130-150
ø89,7
125-150
10,3
ø90 5
Flange 1
d1
d2
d3
Combustion
device
d1d2d3
ST 120 R,RV ø 90 M10 ø 125-150
2.3 Burner installation
2.3.1 Hole patten
Make sure the hole pattern on the boiler is designed for burner flange.
Length of blast tube
Protrusion from flange,
measurement A
Flange
1 2
131 113 97

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2.4 Setting of brake plate and air flow
a b c
ST 120 R, RV 8,0-9,0 2,7-3,3 0,5-1,5
2.5 Working field ST 120R/RV
1,4-4,3 kg/h
17-51 kW
kW
mbar
Type Motor Complete
burner
Sound
ST 120 R, RV 90W 0,75A 230V
50/60Hz 4µF
230V 0,8A
50Hz
70 dBA ± 0,5
dBA
2.5.1 Electric Specification
Burner correspond to IP 20
a
bc
-
0,3
0,0
0,3
0,6
0,9
1,2
1,5
1,8
2,1
2,4
15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 55,0
!*NB It is important that
the spark does not strike
against the brake plate or
nozzle

10 Bentone
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, 8-15 bar
Pump pressure, bar
Gph 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
0,40 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 1,66 20 1,76 21 1,86 22 1,95 23 2,04 24 2,12 25 2,20 26 2,28 27
0,60 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 2,16 26 2,29 27 2,42 29 2,54 30 2,65 31 2,75 33 2,86 34 2,96 35
0,75 2,49 29 2,65 31 2,79 33 2,93 35 3,08 36 3,18 38 3,30 39 3,42 40
0,85 2,83 33 3,00 36 3,16 37 3,32 39 3,47 41 3,61 43 3,74 44 3,87 46
1,00 3,33 39 3,53 42 3,72 44 3,90 46 4,08 48 4,24 50 4,40 52 4,56 54
1,10 3,66 43 3,88 46 4,09 48 4,29 51 4,48 53 4,67 55 4,84 57 5,01 59
1,20 3,99 47 4,24 50 4,47 53 4,68 55 4,89 58 5,09 60 5,29 63 5,47 65
1,25 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 4,49 53 4,76 56 5,02 59 5,27 62 5,50 65 5,73 68 5,95 70 6,15 73
1,50 4,98 59 5,29 63 5,58 66 5,85 69 6,11 72 6,36 75 6,60 78 6,83 81
1,65 5,49 65 5,82 69 6,14 73 6,44 76 6,73 80 7,00 83 7,27 86 7,52 89
1,75 5,82 69 6,18 73 6,51 77 6,83 81 7,14 85 7,42 88 7,71 91 7,97 94
2,00 6,65 79 7,06 84 7,45 88 7,81 93 8,18 97 8,49 101 8,81 104 9,12 108
2,25 7,49 89 7,94 94 8,38 99 8,78 104 9,18 109 9,55 113 9,91 117 10,26 122
The table applies to oils with a viscosity of 4.4 mm2/s (cSt) at a density of 830 kg/m3.
2.7.1 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).