Bentone BENTOFLEX ST 120 KA Caractéristiques techniques

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178 150 15-1 2019-08-29

Installation- and maintenance instruction

BENTOFLEX ST 120 KA

2Bentone

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 120KA ____________________________ 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 ___________________________ 19

5.4 Replacing the fan motor and fan wheel ______________ 20

5.5 Servicing the air intake and intake cone______________ 21

5.6 Replacing the entire electrical package ______________ 21

5.7 Replacing individual electrical package components ___ 22

6. Instructions Pump __________________________________ 23

6.1 DANFOSS BFP41________________________________ 23

7. Oil burner control ___________________________________ 27

7.1 Wiring diagram LOA 21... / LOA24... ______________ 27

7.2 List of components_______________________________ 28

8. Fault Location ______________________________________ 29

8.1 Burner will not start_______________________________ 29

8.2 Burner will not start after normal use ________________ 29

8.3 Delayed ignition__________________________________ 30

8.4 Noise in pump ___________________________________ 30

8.5 Pump pressure __________________________________ 30

9. Log of ﬂue gas analysis ______________________________ 31

10. Oil burners maintenance instructions _______________ 32

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

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 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

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 10000 hrs N/A

Damper motor 500 000 cycles

Contaktor 10 years 500,000 cycles

Burner 1 year 3000 hrs

Filter 1 year 3000 h Change

Oilhose 1 year control/change

Nozzle 1 year change 3000h Change

Electrods 1 Year Change /cleaning 3000h Change /cleaning

Brake plate 1 Year Change /cleaning 3000h Change /cleaning

Motor 1 year 3000 hrs

Cuppling chaft 1 year control/change 3000h control/change

Fan wheel “1 Year Change when dirty /

unbalance”

“3000h Change when dirty /

unbalance”

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 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

øB

8Bentone

2.2 Dimensions, ﬂanges

Flange 2

10,3

130-150

ø89,7

125-150

10,3

ø90 5

Flange 1

Combustion

device

d1d2d3

ST 120 KA 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

94 76 60

147 129 113

9Bentone

2.4 Setting of brake plate and air ﬂow

a b c

ST 120 KA 8,0-9,0 2,7-3,3 0,5-1,5

2.5 Working ﬁeld ST 120KA

2,0-5,6 kg/h

24-66 kW

mbar

Type Motor Complete

burner

Sound

ST 120 KA 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

bc!*NB It is important that

the spark does not strike

against the brake plate or

nozzle

-0,3

0,0

0,3

0,6

0,9

1,2

1,5

1,8

20,0 30,0 40,0 50,0 60,0 70,0

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).

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