Bentone BG 550, BG 650, BG 700, BG 800, BG 950 Installation And Maintenance Instruction

178 034 82-3 2018-04-11

Providing sustainable energy solutions worldwide

Installation- and maintenance instruction

BG 550/650/700/800/950

BMS LMV Biogas

J/K

General

Table of contents

General

GENERAL

1. General Information

_______________________________________________________5

Safety instructions ______________________________________________________5
Actions to take if you smell gas ____________________________________6
Burner servicing schedule ___________________________________________7
Component replacement intervals ________________________________7
Delivery check ____________________________________________________________7

2. Technical data

_______________________________________________________________8

2.1 Burners are intended for use at: _________________________________8

2.2 Dimensions _____________________________________________________________8

2.3 Description BG 550/650 _________________________________________16

2.4 Description BG 700/800/950___________________________________18

3. General instruktions

____________________________________________________20

3.1 General instructions ________________________________________________20

3.2 Operating instructions _____________________________________________20

3.3 Instructions ____________________________________________________________20

3.4 Inspection and maintenance ____________________________________20

3.5 Start up _________________________________________________________________20

3.6 Commissioning of installation___________________________________20

4. Installation

__________________________________________________________________21

4.1 Delivery check _______________________________________________________21

4.2 Preparations for installation _____________________________________21

4.3 Gas supply ____________________________________________________________21

4.4 Electric connection _________________________________________________21

4.5 Skeleton diagrams _________________________________________________22

4.6 Fitting the burner to the boiler __________________________________ 23

4.7 Handling and lifting instruction _________________________________24

4.8 Inspection of gas nozzle before commissioning _________25

5. Setting the burner

_______________________________________________________26

5.1 Setting the combustion assembly ____________________________26

5.2 Setting the air damper ____________________________________________27

5.3 Setting the gas damper __________________________________________27

5.4 Recommended excess air when using default setting 27

5.5 Determining the gas quantity for the system ______________27

5.6 Calculating the quantity of gas supplied ____________________29

6. Service

________________________________________________________________________30

6.1 Servicing the combustion assembly _________________________30

6.2 Servicing air dampers _____________________________________________31

6.3 Replacement of damper motor, air ___________________________ 32
BG700-950 _____________________________________________________________33
BG550/650 _____________________________________________________________33
BG550-950 _____________________________________________________________33

6.4 Replacement of damper motor, gas _________________________ 34

6.5 Flame monitoring and ionisation current check __________35

6.6 Gas nozzle BG 550/650 __________________________________________37

6.7 Gas nozzle BG 550LN ____________________________________________37

6.8 Gas nozzle BG 700/800 __________________________________________38

6.9 Gas nozzle BG 950 ________________________________________________39

6.10 UV detector

___________________________________________________________40

6.11 Setting the air pressure switch _________________________________41

6.12 Setting the min. gas pressure switch ________________________42

6.13 Setting the max. gas pressure switch _______________________43

6.14 Vibration ________________________________________________________________44

7. Handing over of the installation

8. Fault location, functional troubles

9. Regulators

10. Damper motors

__________________________________________________________________46

_______________________________________________________47

___________________________________45

________________________________45

10.1 SQN damper motor ________________________________________________ 47

10.2 SQM damper motor _______________________________________________ 49

11. Gas train

__________________________________________________________________51

11.1 DMK gas butterfly damper ______________________________________ 51

11.2 MULTI-BLOCK VGD40… SKP15/25 ________________________53

11.3 MULTI-BLOCK, MB-DLE 412-420 ___________________________57

12. Electric equipment

___________________________________________________62

12.1 Safety system _______________________________________________________ 62

12.2 Wiring diagram ______________________________________________________63

12.3 Wiring diagram RWF 50:3 _______________________________________ 64

12.4 Wiring diagram RWF 50:2 _______________________________________ 65

12.5 Wiring diagram Jumo 316 _______________________________________ 66

12.7 List of components_________________________________________________ 67

12.6 Components, electrical cabinet ________________________________ 67

13. LMV37 automatic control unit

__________________________________68

13.1 System structure/function description _______________________68

13.2 General information ________________________________________________69

13.3 Technical Data Basic unit LMV37.4... ________________________69

13.4 Connection and internal diagram _____________________________ 74

14. Operation

_______________________________________________________________76

14.1 LMV37 automatic control unit __________________________________ 76

14.2 List of phase displays _____________________________________________ 78

14.3 Automatic control unit levels ____________________________________79

14.4 Setting the automatic control unit _____________________________84

14.5 Backup and restore ______________________________________________ 103

14.6 Fault status message, display of errors and info _______ 107

14.7 Dispaly message of info ________________________________________ 113

14.8 Resetting the automatic control unit _______________________ 114

14.9 Manual output _____________________________________________________115

15. Parameter list

16. Error code list

17. Declaration of conformity

18. General instruction for gasburner

________________________________________________________ 117

________________________________________________________ 126

______________________________________ 140

___________________________ 141

3 Bentone BFG1

General

4

Bentone BFG1

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 certifi ed installers/
personnel

Enertech AB is not liable for any typographical errors and reserves the right
to make design changes without prior notice.

Safety instructions

• 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.

• 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 fi re safety, electrical safety, and fuel distribution.

• The gas outlet from the pressure regulator shall be confi gured in
accordance with applicable regulations and lead to a safe area.

• Make sure when installing the equipment that there is enough space to
service the burner.

• Permitted temperature during operation -10 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.

General

172 515 01 2018-01-02

5 Bentone

General

• 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.

• Seal inspections must be performed during installation and servicing to
prevent gas 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 fi re 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:

- fi tting and installation work has been completed and approved

- electrical installation has been correctly performed

- fl ue gas ducts and combustion air ducts are not blocked

- all actuators and control and safety devices are in working order and
correctly set

Actions to take if you smell gas

Turn off the equipment and the boiler. Open windows and doors. Prevent
open fl ames or sparking, e.g. do not turn lights on or off, do not use any
electrical appliances, do not use mobile phones. Open windows and doors.
Close the gas ball valve. Warn residents; do not use doorbells. Evacuate
the building. Notify the installer or gas supplier once the building has been
evacuated.

172 515 01 2018-01-02

Bentone

6

General

Burner servicing schedule

Servicing must be carried out once a year or after 3000 hours of operation

Burner 1 year 3000 hrs

Inspection of electrical installation 1 year 3000 hrs

Leakage check 1 year 3000 hrs

Filter 1 year replacement at ∆p>10 mbar 3000 hrs replacement at ∆p>10

mbar

Electrodes Replacement/Cleaning 1 year Replacement/Cleaning 3000 hrs

Brake disc Replacement/Cleaning 1 year Replacement/Cleaning 3000 hrs

Motor 1 year 3000 hrs

Fan wheel 1 Year

Replacement when cleaning
needed/ imbalance

3000 h
Replacement when cleaning
needed/ imbalance

Component replacement intervals

Control system 10 years 250,000 starts

Valve control system 10 years 250,000 starts

Pressure switch 10 years 250,000 starts

Ignition system with flame guard 10 years 250,000 starts

UV flame sensor 10000 hrs N/A

Gas pressure regulators 15 years N/A

Gas valve without seal testing 10 years 250,000 starts

Gas valve with seal testing Replacement upon fault detection N/A

Gas pressure switch 10 years 250,000 starts

Safety blow-off system 10 years N/A

Damper motor N/A 500,000 starts

Contactor 10 years 500,000 starts

The burner and its components must be recycled according to applicable regulations.

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.

7 Bentone

General

2. Technical data

2.1 Burners are intended for use at:

• Water heating generators

• Steam generators

• Industrial applications

• Hot air generators

2.2 Dimensions

C

B

E

G

F

E

I

H

Dimensions stated in mm

Type

Standard 1 256 226

BG 550

Standard 3 456 426

BG 650

BG 700

BG 800

Standard 1 316 286

Standard 2 416 386

Standard 363 328

Långt utförande 663 628

Standard 396 361

Långt utförande 696 661

Length of

burner tube

A

Flange

measure A

D

**J

Burner tube

measure B

162 162Standard 2 356 326

184 162

220 205

261 205

Burner tube

measure C

8

BG 950

Bentone BFG1

Standard 1 350 310 280 254

D E F G H I **J

BG 550

BG 650

BG 700

BG 800

BG 950

660 320 400 *590 *743 343 200

660 320 400 *590 *743 343 200

820 410 510 *730 *970 420 200

820 410 510 *730 *1022 472 200

890 410 510 *730 *1027 472 200

* The above dimensions are max. measurements. Depending on the

components used, the measurements may vary.

** Min. recommended distance to floor.

2.2.1 Heat generator connection dimensions

General

BG 550

BG 650

BG 700

BG 800

BG 950

K L M

M12 (Ø 210) Ø 255-290 Ø 170

M12 (Ø 210) Ø 254-280 Ø 190

M14 (Ø 280) Ø320-380 (Ø 210) Ø 230

M14 (Ø 280) Ø320-380 (Ø 210) Ø 270

M14 (Ø 340) Ø420-490 (Ø 260) Ø 290

M

K

L

9 Bentone

General

2.2.2 Capacity range

Type Grade

of gas

BG 550 G20

BG 550 G25

BG 550 G30

BG 550 G31

BG 650 G20

BG 650 G25

BG 650 G30

BG 650 G31

BG 700 G20

BG 700 G25

BG 700 G31

BG 800 G20

BG 800 G25

BG 800 G30

BG 950 G20

BG 950 G25

BG 950 G30

BG 950 G31

Capacity kWGas quantity

at min. power

Nm3/h 1)

140–628 15 67

140–628 17 73 see data plate

140–628 4 19 see data plate

Gas quantity

at max.

power Nm3/h

1

)

Max.

connection

pressure

mbar

360

Min

connection

pressure mbar

see data plate

140–628 6 25 see data plate

200–1125 21 118

200–1125 24 137 see data plate

200–1125 6 35 see data plate

360

see data plate

200–1125 6 35 see data plate

300–1500 31 157

360–1500 37 183 see data plate

360

see data plate

380–1650 15 67 see data plate

380–2400 40 252

380–2400 46 293 see data plate

360

see data plate

380–2400 40 252 see data plate

500–3200 52 336

500–2800 61 342 see data plate

500–3200 15 98 see data plate

360

see data plate

500–3200 20 130 see data plate

Lower heat value Hu at normal state 15°C and 1013.25 mbar EN676

Grade of gas

Natural gas

Natural gas

Propane

Butane

kWh/Nm

3

G20 9.5 34.02 8126

G25 8.2 29.25 6986

G31 24.6 88.00 21019

G30 32.5 116.09 27728

MJ/Nm

3

kcal/Nm

3

Gas quantity and capacity vary according to grade of gas and connection
pressure.

10

Bentone

, RO, SE,

3R

2.2.3 Appliance categories

Only dry gas is permitted for use

BG 550

General

Gerätekategorien
Appliance categories

II

2R/3R

II

2H3B/P

II

2H3P

II

2L3B/P

II

2E3B/P

I

2E(R)B

I

3P

BG 650

Gerätekategorien
Appliance categories

II

2R/3R

II

2H3B/P

II

2H3P

II

2L3B/P

II

2E3B/P

I

2E(R)B

I

3P

BG 800

Gerätekategorien

Appliance categories

II

2R/3R

II

2H3B/P

II

2H3P

II

2L3B/P

II

2E3B/P

I

2E(R)B

I

2H

I

3B/P

I

Versorgungsdrücke
Supply pressures

Bestimmungsländer
Countries of destination

30-360mBar "BG, CZ, DE, EE, ES, FR, GR,

HU, IS, IT, LU, LV, NO, PT, SI,
All countries"

30-360mBar AT, CH, CY, DK, FI, LT, RO, SE,

SK

30-360mBar GB, IE,

30-360mBar NL, RO

30-360mBar PL

30-360mBar BE

30-360mBar BE

Versorgungsdrücke
Supply pressures

Bestimmungsländer
Countries of destination

40-360mBar "BG, CZ, DE, EE, ES, FR, GR,

HU, IS, IT, LU, LV, NO, PT, SI,
All countries"

40-360mBar AT, CH, CY, DK, FI, LT

SK

40-360mBar GB, IE,

40-360mBar NL, RO

40-360mBar PL

40-360mBar BE

40-360mBar BE

Versorgungsdrücke

Supply pressures

40-360mBar ”CZ, DE, EE, ES, FR, GR, IT,

40-360mBar ”AT, CH, CY, DK, FI, LT, RO,

40-360mBar GB, IE,

40-360mBar NL, RO

40-360mBar PL, RO

40-360mBar BE

40-360mBar HU, LT, LV

30-360mBar BE, HU,LT

30-360mBar GB,LT

Bestimmungsländer

Countries of destination

LT, LU, LV, IT, NO, PT, SI,
All countries”

SE,
SK”

11 Bentone

General

Bestimmungsländer

Countries of destination

NO,

,

3R

BG 700

Gerätekategorien

Appliance categories

Versorgungsdrücke

Supply pressures

II

2R/3R

II

2H3P

II

2H3P

II

2L3P

II

2E3P

I

2E®

I

3P

BG 950

Gerätekategorien

Appliance categories

II

2R/3R

II

2H3B/P

II

2H3P

II

2L3B/P

II

2E3B/P

I

2E(R)B

I

2H

I

3B/P

I

40-360mBar ”BG, CZ, DE, EE, ES,

HU, IS, IT, LU, LV,
All countries”

40-360mBar ”AT, CH, CY, DK, FI, LT

SK”

40-360mBar GB, IE,

40-360mBar NL, RO

40-360mBar PL

40-360mBar BE

40-360mBar BE

Versorgungsdrücke

Supply pressures

40-360mBar ”CZ, DE, EE, ES, FR, GR, IT,

40-360mBar ”AT, CH, CY, DK, FI, LT, RO,

40-360mBar GB, IE,

40-360mBar NL, RO

40-360mBar PL, RO

40-360mBar BE

40-360mBar HU, LT, LV

30-360mBar BE, HU,LT

30-360mBar GB,LT

Bestimmungsländer

Countries of destination

LT, LU, LV, IT, NO, PT, SI,
All countries”

SE,
SK”

Bentone

12

General

2.2.4 Electric Specification

Burner correspond to IP40

Type BG 550 BG 650

Motor

230/400V, 50Hz,

3,5/2,5A, 0,75kW

2860 Rpm

The recommended main fuse

motor

Control power

Sound

Type BG 700 BG 800 BG 950

Motor

89 dBA ± 0,5 dBA 91 dBA ± 0,5 dBA

230/400V, 50Hz,

230V1F~2,5A

10,4/5,5A, 3,0kW,

2940 Rpm

The recommended main fuse

motor

C16A D20A D20A

230/400V, 50Hz,
6,5/4,0A, 1,5kW,

2890 Rpm

C10A

230/400V, 50Hz,

20,5/12,0A,

5,5kW, 2950 Rpm

230/400V, 50Hz,

21,5/13,5A,

5,5kW, 2950 Rpm

Control power

Sound

93 dBA ± 0,5 dBA 96 dBA ± 0,5 dBA 97 dBA ± 0,5 dBA

Measurements according to EN 3746: 2010

Alt.1 The sound level of the burner can be reduced by equipping the burner

with silencer. Installation must be done so it does not prevent air supply
to the burner.

Alt.2 The burner’s noise level can be reduced by connecting the burner’s air

intake to the air duct that opens into an appropriate location. Installation
must be done so it does not prevent air supply to the burner.

230V1F~2,5A

13 Bentone

General

2.2.5 Working field

BG 550

140-628 kW

Do not exceed working
field

!

BG 650

200-1125 kW

Do not exceed working
field

!

14
12

10

8
6
4
2
0

Pressure in fire place mbar

-2
100 200 300 400 500 600 700

14
12
10

8
6
4
2
0

-2
200 300 400 500 600 700 800

Pressure in fire place mbar

900 1000 1100 1200

kW

kW

14

Bentone

General

mbar

BG 700

G20, G21 300-1500 kW

G31 380-1650

Do not exceed working
field

!

BG 800

380-2400 kW

Do not exceed working
field

!

14

12

10

8

6

4

2

0

-2
200 400 600 800 1000 1200 1400 1600

32

28

24

20

16

12

8

4

0

-4
200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400

kW

kW

BG 950

500-3200 kW

Do not exceed working
field

!

32

28

24

20

16

12

8

4

0

-4

400 900 1400 1900 2400 2900 3400

kW

15 Bentone

General

2.3 Description BG 550/650

11

10

12

13

14

122

2

3

4

5

6

7

15

89

12

16

11

17

18

16

Bentone

General

17

16

19

22 21

2

4

9

2.3.1 Components BG 550/650

1. Burner tube

2. Damper motor, gas

3. Min. gas pressure switch/tightness check

4. MultiBloc

5. Air damper

6. Damper motor, air

7. Connection gas fi ttings

8. Air pressure switch

9. Fan house

10. Sight glass

11. AZL display for LMV automatic control unit

12. Switch 0-l

13. Brake plate adjustment

20

14. Guide bar

15. Ignition electrode

16. Shrouded disc

17. Ionisation electrode

18. Electrical connection

19. Gas nozzle

20. Motor

21. Measuring nipple, fan pressure

22. Connection fl ange

18

17 Bentone

General

2.4 Description BG 700/800/950

14

5

1

2

3

4

7

10

15

6

8

9

12

16

17

11

18

18

Bentone

17

General

22

21

19

2.4.1 Components BG 700/800/950

1. Burner tube

2. Damper motor, gas

3. Min. gas pressure switch/tightness check

4. MultiBloc

5. Air damper

6. Damper motor, air

7. Connection gas fittings

8. Air pressure switch

9. Fan house

10. Sight glass

11. AZL display for LMV automatic control unit

12. Switch 0-l

13.

18

20

14. Guide bar

15. Ignition electrode

16. Shrouded disc

17. Ionisation electrode

18. Electrical connection

19. Gas nozzle

20. Motor

21. Measuring nipple, fan pressure

22. Connection flange

19 Bentone

General

3. General instruktions

3.1 General instructions

The installation of the gas burner must be carried out in accordance with
current regulations and standards. The installers of gas burners should
therefore be acquainted with all regulations and ensure that the installation
complies with the requirements. The installation, mounting and adjustment
should be made with the greatest care and only the correct gas should be
used.

3.2 Operating instructions

The operating instructions accompanying the burner should be left in a
prominent position in the boiler room.

3.3 Instructions

The user should be thoroughly in-structed in the function of the gas burner
and the whole installation. The supplier must instruct the user.

3.4 Inspection and maintenance

Daily inspection is advisable..

3.5 Start up

After the burner has been fitted to the boiler and the electric connection, the
leakage control, the venting and the electric function test have been carried
out, the burner will be ready for start-up.

Howerer, study the sections dealing with adjustments of multi-bloc,
combustion air and combustion head. Open the ball valve and switch on the
main switch. If the burner starts the actual adjustment can be made.

3.6 Commissioning of installation

Control of the combustion. The combustion quality is checked by means of a
flue gas analysis device. Adjust the burner to appr. 20%

excess air in accordance with the table. Check the flue gas temperature.
Calculate the efficiency. Check also the actual gas volume on the gas meter
so that the correct input is achieved.

20

Bentone

4. Installation

4.1 Delivery check

Check that all has been delivered and that the goods have not been
damaged during transport. If that is not the case, please notify the delivery
company. Transport damages should be reported to the forwarding agency.

4.2 Preparations for installation

Check that the measurements and capacity range of the burner are
compatible with the boiler. The power ratings on the type plate refer to the
min. and max. power of the burner.

4.3 Gas supply

For good operating safety, it is important that the gas supply system is
installed correctly.
Consider the following:

1. Check that the burner is approved for the gas quality of the installation.
If not, please contact the supplier.

2. Check that the gas components of the burner are approved for
indicated gas pressure.

3. The gas supply system should be installed in accordance with current
standards.

4. Pipe lines should be run so that service on boiler and burner is
facilitated.

5. Pipe lines should be run so that eventual contaminants cannot come
into contact with the gas components.

General

4.4 Electric connection

Before starting the electric installation, the main switch must be turned off.
If the boiler has a 7-pole and a 4-pole Eurostecker connector, these usually
fit directly to the burner. If not, use the connectors included.
(Refer to connection under Electric equipment)

If an electric connection other than the one recommended by Enertech is used, a risk of damage and
injury can arise.

!

21 Bentone

General

4.5 Skeleton diagrams

4

5a

2

1

3

5b

6a

8910

6b

Multibloc

1. Ball valve

2. Filter

3. Governor

4. Pressure gauge with shut-off cock

5a. Gas pressure switch, mini

5b. Gas pressure switch, maxi

6a. Main valve, 2 -stage

6b. Safety valve

7. 1) Valve proving system

8. Air damper motor

9. Air pressure switch

7

10. Gas burner control LMV

Pos. 5b, 7: Components not required according to EN 676.

1)

Required over 1200 kW according to EN 676

When Bio gas is used, Enertech shall always be contacted.

!

Bentone

22

4.6 Fitting the burner to the boiler

Use 4 x M12 bolts to fit the burner to the boiler. See technical data for the
hole pattern.

To make the fitting process easier, it is possible
to separate the burner body from the gas flange
with the combustion head and valve assembly
in place.

Proceed as follows:

1. Ensure that no power is going to the
burner. Switch off the main power supply
and disconnect the Euro plugs from the
burner. NOTE! If the burner is directly
connected, ensure that all components
on the burner are without power.

2. Remove the cover plate from the fan
housing.

3. Undo the nut (D) to the nozzle assembly.
(applies to BG 550 & 650; does not feature on BG 700, 800 & 950)

4. Disconnect the electrical cables to the valve assembly and gas damper
motor.

5. Undo the screws (B) on both sides.

6. Undo the end stops (C) on the guides.

7. Disconnect the ignition cable, ionisation cable and control arm
(550/650 only) from the gas nozzle.

8. Pull out the burner body from the guides and put it in a suitable place.

After separating the burner body and gas flange it is easier to fit the gas
flange with the combustion head and valve assembly to the boiler. Once the
gas flange is fitted to the boiler, it is easy to lift the burner body up onto the
guides. Assemble the burner in reverse order to its disassembly.

General

Service position

Check the gas tightness.

!

23 Bentone

General

4.7 Handling and lifting instruction

4.7.1 BG 550, BG 650

Option
The lifting aid we used
here are available as

!

spare parts, Figure 1

4.7.2 BG 700, BG 800, BG 950

Figure 1

3

24

1

2

Bentone

4.8 Inspection of gas nozzle before

commissioning

The gas nozzle can easily be inspected by using the guides on the burner.

Proceed as follows:

1. Ensure that no power is going to the burner. Switch off the main power
supply and disconnect the Euro plugs from the burner.

If the burner is directly connected, ensure that all components on
the burner are without power.

!

2. Remove the cover plate from the fan housing.

3. Undo the nut (D) to the nozzle assembly. (applies to BG 550 & 650;
does not feature on BG 700, 800 & 950)

4. Disconnect the ignition cable and ionisation cable for the gas nozzle.

5. Ensure there is enough slack in the electrical cables to the valve
assembly and gas damper motor to pull out the burner body in the rear
position on the guides. If there is not enough slack the cables can be
disconnected.

6. Undo the screw (B) on both sides.

7. Pull out the burner on the guides.

8. Undo the screw(s) (A) on the gas flange.

9. Take out the gas nozzle.

10. See section 11.7-11-10

Re-assemble the burner in reverse order to that described above. When re­assembling, make sure that the O-ring located between the gas nozzle and
the gas flange is in the correct position when the nozzle is re-fitted.

General

If the burner tube is the long variant, the gas nozzle must be removed from the connection tube and then
inserted backwards into the fan housing (from the boiler) to enable maintenance of the brake plate, nozzle,

!

electrodes, etc.

25 Bentone

General

5. Setting the burner

5.1 Setting the combustion assembly

It may sometimes be necessary to adjust the combustion assembly, i.e. the
position of the brake plate in the burner tube.

5.1.1 Setting the combustion assembly, BG

550 & 650

The burner is equipped with a lever that changes the position
of the brake plate in the combustion head. This is used to set
the correct pressure drop across the combustion assembly and
thereby obtain good combustion without ripples.

The best position is, among other things, dependent on the input
power and overpressure in the boiler.

A general rule of thumb is that the smaller the capacity, the smaller the gap
should be between the brake plate and the combustion assembly.

The position of the brake plate also has an impact on the quantity of air
supplied for combustion. This means that once the brake plate has been
adjusted, the combustion should be checked and, if necessary, the setting of
the air damper adjusted to obtain good combustion.
Make the adjustment by turning screw X.

A left turn opens the brake plate, providing a lower pressure drop and more
air to the combustion process.

A right turn closes the brake plate, providing a higher pressure drop and less
air to the combustion process.

5.1.2 Setting the combustion assembly, BG 700,

800 & 950

The burner is not equipped with a lever that changes the position of the
brake plate in the combustion head.

On these burners the combustion assembly is designed so that good
combustion can be obtained without adjusting the brake plate.

X

5.2 Setting the air damper

The position of the air damper must be adjusted to achieve a suitable fuel-air
mixture in the operational events that are programmed.

See section 13.4 (LMV) for the setting procedure.

Bentone

26

5.4 Calculate prepurge time

Parameter 225 is used to set the blowing time

General

V = Fire box size m

3

Q = Burner output at prepurge [kW]

X = Prepurge time seconds Water boilers

100% air rate

50 % air rate

33% air rate

at least 20s prepurge time

at least 40s prepurge time

at least 60s prepurge time

X = Prepurge time seconds Steam generators

at last prepurge 5 times fi rebox volume

X = Prepurge time seconds Industrial heating process

at least prepurge at least 5 times fi rebox and
adapted compartments volumes together

Local regulations must be followed

Calculation example:

Example A: V=2m

Example B: V=9,5m

Example C: V=25m

3

3

3

Q=200

Q=500

Q=2200

Example A

Example B

Example C

X = V

((Q · 1,2) / 3600) ((200 · 1,2)/3600)

X = V

((Q · 1,2) / 3600) ((500 · 1,2)/3600)

X =

((Q · 1,2) / 3600) ((2200 · 1,2)/3600)

.

5

.

5

.

5

V

=

=

=

2 · 5

9,5 · 5

25 · 5

= 150 seconds

= 285 seconds

= 170 seconds

5.3 Setting the gas damper

The position of the gas damper must be adjusted to achieve the desired
minimum and maximum input power.
See section 13.4 (LMV) for the setting procedure.

27 Bentone

General

5.4.1 Example of how to calculate the gas quantity

(natural gas G20):

V0 = Desired quantity of gas [Nm3/h]

Q = Boiler output [kW]

= Gas heat value [kWh/Nm3] or [MJ/Nm3] or [kcal/

H

U

Nm3]

η=

Calculation example:

Q = 2200 kW

Boiler efficiency [%]

H

= Example A: 34,020 MJ/Nm

U

3

Example B: 9.5 kWh/Nm3

Example C: 8126 kcal/Nm

3

η = 90%

Example A
V

0A

Example B
V

0B

Example C
V

0C

If the barometer reading (altitude), pressure and temperature of the gas
deviate significantly from normal values, this must be taken into account as
follows:

T = Temperature of gas at the gas meter [°C]

B = Barometer reading [mbar]

P = Pressure of gas at the gas meter [mbar]

f = Factor calculated for multiplication with flow in Nm

V = Actual flow [m

f =

= Q . 3600

· η

H

u

= Q

· η

H

u

=

Q

· 0,00116 · η

H

u

arrive at actual flow in Nm

273

273+T 1013.25

B+P

·

=

≈

=

3

/h.

2200 · 3600

34,200 · 0.90

2200

9.5 · 0.90

2200

8126 · 0.00116 · 0.90

3

/h to

≈ 258 Nm

≈ 257 Nm

≈ 259 Nm3/h

3

/h]

3

/h

3

/h

28

Bentone

Calculation example:

T = 15°C

B = 945 mbar

P = 15 mbar

General

f = 273

273+15 1013.25

.

945+15

≈ 0.90 Nm

3

/h

This means that the quantity of gas read from the gas meter should actually
be read off as 1.11 . the calculated flow in a normal state.

V = V

= V

V

A

V

=

B

V

=

C

. f

0

. f = 258 . 0.90 ≈ 232 m3/h

0A

V

. f = 257 . 0.90 ≈ 231 m3/h

0B

V

. f = 259 . 0.90 ≈ 233 m3/h

0C

5.5 Calculating the quantity of gas

supplied

The quantity of gas supplied can be calculated if the system is equipped with
a gas flow meter of some type. The procedure here is usually to measure
how long it takes for the burner to consume a certain quantity of gas.

To measure:

t = Time for a certain quantity of gas consumed by the burner. [h]

M = Quantity of gas consumed. [m

3

]

V = Actual gas flow [m

V = M

t

[m

3

/h]

Calculation example:

t = 1 min 10 s

M = 4500 dm

M = 4500 = 4.5 m

3

(litre)

3

1000

t = 1 + 10 = 0.0194 h

60 3600

3

V = M = 4.5 ≈ 232 m

/h

t 0.0194

3

/h]

29 Bentone

General

6. Service

Whoever carries out service and maintenance on the burner must be
authorised to do so. If components need to be replaced, the replacements
must be of the same make and type and be approved by the authorities. If
the burner is to be used for a different grade of gas, a new adjustment must
be carried out. If town gas is to be used, it is also necessary to convert the
combustion assembly; in some cases the multi-block or valves and gas train
may also need to be changed to a larger type.

6.1 Servicing the combustion assembly

Removal and installation

1. Switch off the main power supply and disconnect the Euro plugs from
the burner.

If the burner is directly connected, ensure that all components on
the burner are without power.

!

2. Remove the cover and disconnect the ignition cable, ionisation cable
and control arm (550/650 only) from the gas nozzle.

3. Loosen the nuts (B) and pull the burner body out of the guides.

4. Loosen the screw (A); this releases the combustion assembly and
allows it to be lifted out.

5. Check and clean the brake plate and gas inlet. If necessary, replace
the worn parts.

6. Check the ignition electrode (see chapter 11.7–11.10). Replace if
necessary.

7. Check the ionisation electrode (see chapter 11.7–11.10). Replace if
necessary.

8. Fit the combustion assembly in reverse order.

9. Press the burner together and lock using the nuts (B).

10. Fit the Euro plugs and turn on the main power supply.

11. Check/adjust the combustion.

30

Bentone

6.2 Servicing air dampers

Removal and installation

1. Switch off the main power supply and disconnect the Euro plugs from
the burner.

If the burner is directly connected, ensure that all components on
the burner are without power.

!

2. Loosen the nuts (B) and pull the burner body out of the guides.

3. Remove the intake grille at the air intake.

4. Remove the screws (G) securing the damper motor mounting plate.

5. Lift up the damper motor.

6. Clean the air damper (F) and the intake. Lubricate any damper shaft.

7. Re-install the damper motor and mounting plate on the air intake.
Ensure that the damper shaft and control arm are connected correctly.

8. Adjust the home position of the damper before tightening the screws
(I).

9. Push the damper motor forwards and backwards in the adjustment
slot.

10. Lock the damper motor in position where the damper is almost
engaged but still has a small air gap by the fan housing.

11. Install the intake grille for the air intake.

12. Press the burner together and lock using the nuts (B).

13. Check/adjust the combustion.

General

31 Bentone

General

6.3 Replacement of damper motor, air

Removal and installation

1. Switch off the main power supply and disconnect the Euro plugs from
the burner.

If the burner is directly connected, ensure that all components on
the burner are without power.

!

2. Disconnect the damper motor cable from the automatic control unit.

3. Remove the screws (I) securing the damper motor.

4. Loosen the screws (G) to the damper motor mounting plate.

5. Lift up the damper motor.

6. Remove (H) the control arm from the motor shaft.

7. Remove the damper motor from the mounting plate (I).

SQM must be connected and supplied with power before
installation to ensure that the motor shaft and direction of rotation

!

are set correctly.

8. Install the new damper motor on the mounting plate.

For BG 550/650, SQN 14 is used for air control.
For BG700/800/950, SQM 33 is used.

!

Parameter 601.00:0
Parameter 601.01:1
Parameter 602.00:0
Parameter 602.01:1

9. Fit the control arm on the damper motor shaft. It is important that the
screw is perpendicular to the plane of the shaft.

10. Re-install the damper motor and mounting plate on the air intake.
Ensure that the damper shaft and control arm are connected correctly.

11. Connect the damper motor cable to the automatic control unit.

12. Fit the Euro plugs and turn on the main power supply.

13. Adjust the home position of the damper before tightening the screws.

14. Push the damper motor forwards and backwards in the adjustment
slot.

15. Lock the damper motor in position where the damper is almost
engaged but still has a small air gap by the fan housing.

16. Connect the damper motor cable to the automatic control unit.

17. Fit the Euro plugs and turn on the main power supply.

18. Check/adjust the combustion.

32

!

Bentone

NOTE! When resetting dampers, ensure that they do not
engage in the close damper position. If dampers do engage, the
automatic control unit will report an error message.

General

BG700-950

BG550/650

G

I

G

G

I

I

G

BG550-950

I

H

33 Bentone

General

6.4 Replacement of damper motor, gas

Removal and installation

1. Switch off the main power supply and disconnect the Euro plugs from
the burner.

If the burner is directly connected, ensure that all components on
the burner are without power.

!

2. Disconnect the damper motor cable from the automatic control unit.

3. Undo the screw (Y) on the connection between the motor and damper.

4. Undo the screws (X) and remove the damper motor from its damper
plate.

5. Install the new damper motor, tighten the screws (X).

An SQN 13 damper motor must be used to adjust the gas valve.

!

6. When tightening screw (Y), ensure that the damper is in the closed
position.

7. Connect the damper motor cable to the automatic control unit.

8. Fit the Euro plugs and turn on the mains power.

9. Check / adjust combustion.

34

Bentone

6.5 Flame monitoring and ionisation

current check

The standard version of the burner is monitored according to the ionisation
principle. The ionisation current should be checked on initial start-up and at
each service visit.
The reason for low ionisation current can be leakage current, poor
connection to earth, fouling or incorrectly positioned ionisation electrode in
the combustion head. Sometimes the wrong gas-air mixture can also cause
a very poor ionisation current.
The ionisation current is measured with a microampere meter (µA) that is
connected in series with the ionisation electrode and the gas burner control.
Connect the µA meter according to the figure. The minimum required
ionisation current is shown in the table. In practice, this current must be
significantly higher, preferably more than 10µA. The connection of the µA
instrument is made easier by the fact that all gas burners are equipped with
a divisible ionisation cable.

General

Technical data

For continuous operation!

No-load voltage at ION terminal
(X10–05 terminal 2)

Protect the ionization probe against electric shock hazard!

Approx. UMains

!

Short-circuit current Max. AC 1 mA

Required detector current Min. DC 4 µA, flame display approx.

30%

Possible detector current Max. DC 16…40 µA, flame display

approx. 100%

Threshold values when flame is supervised by an ionization probe:

- Start prevention (extraneous
light)

- Operation Intensity of flame (parameter 954) >24%

Intensity of flame (parameter 954) ≥18%

35 Bentone

General

ION input

Ionization current in

A

Flame intensity in %

7541d46e/0208

ION input

100

90

80

70

60

50

40

30

20

10

Flame intensity in %

0

0 2 4 6 8 10 12 14 16 18 20

Ionization current in µ A

µ

Figure 1: Ionization input at AC 120 V / AC 230 V

LMV

X10-05,2

Bentone

36

6.6 Gas nozzle BG 550/650

General

Towngas

Biogas (UV detector)

Natural gas, Propane

6.7 Gas nozzle BG 550LN

A = 10 mm Front edge of brake plate
B = 3 mm

A

B

A = Position of ionisation detector
B = Position of ignition electrode

A B

37 Bentone

General

6.8 Gas nozzle BG 700/800

Natural gas, Propane

3-4

≈

1

Propane

45°

Natural gas

15-20

Biogas (UV detector)

10-12

3-3,5

38

Bentone

6.9 Gas nozzle BG 950

Natural gas, LPG

Distance electrode - brake plate.

3-4

45°

General

Biogas (UV-sond)

39 Bentone

General

6.10 UV detector

This should not be exposed to temperatures higher than 60°C. The current
passing though the UV detector, when it is lit up, should be at least 70 µA for
LFL1. This current can be measured using a multimeter, although this is only
necessary if a malfunction is suspected.

If flame detectors QRA2… / QRA4.U / QRA10... are used for
flame supervision with the LMV37.4..., it must be ensured that the

!

basic unit is permanently connected to power (conforming to EN
230 / EN 298), thus enabling the system to detect flame detector
failures during startup and shutdown.

Operating voltage Max. 350 V peak

Required detector current in
operation

Possible detector current in
operation

Permissible length of flame
detector cable

- normal cable (laid separately)

Min. 70 µA

Max. 600 µA

Max. 20 m

UV flame detector QRA...Measuring circuit for detector

current measurement

Legend

A Incidence of light

C Electrolytic capacitor 100...470 µF;

DC 10...25 V

M Microammeter Ri max. 5000 

• Input QRA... is not short-circuit-proof! Short-circuits of X10­06 Pin 2 against earth can destroy the QRA... input

!

Threshold values when flame is supervised by QRA...:

• Simultaneous operation of QRA... and ionization probe is
not permitted!

- Start prevention (extraneous light) Intensity of flame (parameter 954) ≥18%

- Operation Intensity of flame (parameter 954) >24%

A

QRA

+

-

M

C

+

X10-06.2

X10-06.1

LMV

-

!

Warning!

40

Bentone

6.11 Setting the air pressure switch

The air pressure switch should block the burner if the air quantity supplied
for combustion is insufficient. The air pressure switch must be set so that,
if there is a defective air supply at the burner’s max. or min. capacity, it
reacts before the monitored pressure falls so much that it results in poor
combustion.

Inställningsområde ca:
LGW 10 1-10 mbar
LGW 50 2,5-50 mbar

Setting for air pressure switch

1. Remove the protective cover, screw (Y).

Be careful when adjusting the air pressure switch; it contains a
live component.

!

General

2. Start the burner.

3. Carefully turn the scale on the air pressure switch clockwise until the air
pressure switch stops the burner. Is the tolerance on the scale for

the min. air pressure switch approx. ±15%?

4. Try to find the pressure at which the burner stops for both the
minimum and maximum input power by turning the scale. Make a note
of the values and then set the air pressure switch on the basis of the
highest pressure noted at which the burner stopped.

5. The air pressure switch should be set to a pressure approx. 10–15%
lower than the highest noted pressure at which the burner stopped.

6. After setting the air pressure switch, perform repeated starts and run
through the burner’s set output range several times. This is to ensure
the reliable function of the burner. If breakdowns or interruptions occur,
the air pressure switch is probably set to a too narrow position.

7. Fit the protective cover, screw (Y).

Y

Y

41 Bentone

General

6.12 Setting the min. gas pressure

switch

The min. gas pressure switch should react to a burner connection pressure
that is too low and in such cases prevent the burner from starting. If the
connection pressure to the burner is too low during operation, the min. gas
pressure switch should stop the burner. The burner can start again once
the connection pressure has risen above the pressure set for the min. gas
pressure switch.

Setting for min. gas pressure switch

1. Remove the protective cover, screw (Y).

2. Open the pressure outlet (X) and connect a manometer to measure the
connection pressure.

3. Start the burner.

4. Measure and make a note of the connection pressure to the burner
during normal operation at the highest input power.

5. Based on the desired connection pressure set, determine the
connection pressure at which the gas pressure switch should stop the
burner. Set the connection pressure at which the burner is stopped at
a level where the burner is stopped before poor combustion occurs.

6. Set the min. gas pressure switch to this value by turning the scale.

7. Check the setting by carefully closing the ball valve while measuring the
connection pressure.

8. When the min. gas pressure switch stops the burner, the value
measured should then approximately correspond to the setting on the
min. gas pressure switch. The tolerance on the scale for the min. gas
pressure switch is approx. ±15%.

9. Open the ball valve.

10. Remove the pressure gauge and close the pressure outlet (X).

Check the gas tightness.

!

11. Fit the protective cover, screw (Y).

Bentone

42

X

Y

6.13 Setting the max. gas pressure

switch

The burner is only equipped with a max. gas pressure switch if the customer
makes such a request. It should block the burner if the gas pressure
exceeds the set value. Starting can then only take place through a manual
reset (gas burner control or overpressure switch).

Setting for min. gas pressure switch

1. Remove the protective cover, screw (Y).

2. Open the pressure outlet (X) and connect a manometer to measure the
pressure downstream of the gas valve.

3. Start the burner.

4. Measure and make a note of the highest pressure downstream of the
gas valve within the range of the set input power when the burner is
operating under normal conditions.

5. Based on the highest pressure measured downstream of the gas
valve, the desired pressure at which the burner must be stopped is set
downstream of the gas valve.

6. Set the max. gas pressure switch to this value by turning the scale.
The tolerance on the scale for the max. gas pressure switch is approx.
±15%.

7. Remove the pressure gauge and close the pressure outlet (X).

General

Check the gas tightness.

!

8. Fit the protective cover, screw (Y).

X

Y

Setting range:

2.5–50 mbar GW 50
5-150 mbar GW 150

Gas pressure switch, air pressure switch

43 Bentone

General

6.14 Vibration

Maximum vibration level are 5,0 mm/s

• Check all bolts and nuts for correct torque

• Check fan wheel for damage and contamination. Change when dirty/
unbalanced

• Check motor bearings. If worn change motor/bearings

Use lid screw
hole for sensor
mounting

44

Bentone

7. Handing over of the
installation

• Make repeated start attempts to ensure that the adjustments function.

• Close the ball valve during operation to check that the gas switch
switches off at the set value.

• Remove the hose for the air pressure switch to check that the burner
locks out.

• Check that all protective covers and measurement nipples are
mounted and fastened.

• Fill out necessary test reports.

• Instruct the persons in charge of the operation on the service and
maintenance of the installation and what to do should any troubles
occur.

• Inspection and service must be carried out by authorized personnel.

General

Review and service should be performed by authorised personnel
only

!

8. Fault location,
functional troubles

Trouble free operation is dependent on three factors: electricity, gas and air
supply. Should there be any changes in the ratio between these three factors
there is a risk of break downs. It has been proved that most break downs
are caused by simple faults. Before calling the service engineer, the following
should therefore be checked:

• Is the gas cock open?

• Are all fuses in order and the current switched on?

• Are the thermostats correctly set?

• Are pressostats, overheating protection etc. in operating position and
not locked-out?

• Is the gas pressure sufficient?

• Is the gas burner control in start position?

• Has the gas control or the motor protector locked out? - Reset.

• Is the circulation pump in operation?

• Is there a supply of fresh air to the installation?

• If integral components are of a different make from what is stated in
this manual, see the enclosed loose-leaf.

45 Bentone

General

9. Regulators

The burner can be either fi tted with a regulator on the burner or connected
to an external regulator if this is preferred. The interface with the regulator
is a Stecker connector in the electrical cabinet, irrespective of whether the
regulator is internal or external. Connection of the preferred type of regulator
can be made here easily.

Three variants of regulator for installation directly on the burner are available.

• JUMO dTRON 316 With three position signal: up signal, no signal and
down signal.

• RWF50.2 With three position signal: up signal, no signal and down
signal.

• RWF50.3 With analogue signal 4–20 mA or 0–10 V. LMV37 uses 4–20
mA.

For information and operation of the different regulators which can be
installed directly on the burner, see the enclosed manual.

When connecting an external regulator of a type other than those which
are installed on burners, see the manufacturer’s recommendations and the
wiring diagram for burners.

46

Bentone

10. Damper motors

The burner is fi tted with two damper motors, one for the gas damper and
one for the air damper. They can be SQN13, SQN14 or SQM33.4 type
motors.

10.1 SQN damper motor

10.1.1 Technical specifi cation

General

Torque Up to 1 Nm (rated output torque)

SQN13… Gas

SQN14… Air

Running time Adjustable on the LMV3...

Supply voltage AC / DC 24 V ±20 % (load on interface)

Power consumption Max. 7.5 W

Perm. on time Max. 50 %

Perm. running time Max. 60 s

Angular adjustment Usable range max. 90°

Degree of protection IP40

Rated resolution encoder monitoring 0.7°

0-position of actuator drive shaft As supplied 0 +2° / -2°

Environmental conditions:

Temperature range -10...+60 °C

Humidity <95 % r.h.

47 Bentone

General

10.1.2 Mounting position

Optional

10.1.3 Choice of damper motor variant

An SQN14 damper motor is used on BG 550 and BG 650 burners to control
the amount of air. An SQN13 damper motor is used on BG 550, BG 650, BG
700, BG 800 and BG 950 burners to control the amount of gas.

10.1.4 Important to remember

• When servicing/replacing a damper motor, select the correct motor for
the desired control as the direction of rotation varies.

• When servicing/replacing a damper motor, clean it and check that the
damper is not sluggish to avoid problems with the damper motor not
managing to make adjustments.

• The tightening torque of 1.5 Nm for the fixing screws must not be
exceeded to prevent damage to the actuator and to ensure that the
actuator does not twist on its mounting surface

• When mounting the actuator, ensure that the permissible axial and
radial loads on the bearing are no not be exceeded

• When fitting the actuator to the controlling element, the correct
mounting order must be observed. It is usually as follows:

1. Screw on the actuator

2. Connect the actuator’s drive shaft to the controlling element using the
coupling pin screw.

• The actuators are supplied with attached connecting cable and plug

• Single bend when laying the cable: 2 x cable diameter

• Always run the high-voltage ignition cables separate from the unit and
other cables while observing the greatest possible distance.

• The holding torque is reduced when the actuator is disconnected from
power.

48

Bentone

10.2 SQM damper motor

10.2.1 Technical specifi cation

General

Torque up to 3 Nm nominal output torque

self-holding torque

SQM33.5… Parameter 601.00:0

Parameter 601.01:1
Parameter 602.00:0
Parameter 602.01:1

Cable length:

SQM33.510… 1,5 m

SQM33.511… 3,0 m

Running time Adjustable on the LMV3...

Supply voltage AC / DC 24 V ±20 % (load on

interface)

Power consumption Max. 10 W

Perm. on time 50%, max. 3 min. continuously

Angular adjustment Usable range max. 90°

Degree of protection IP40

Rated resolution encoder monitoring 0.7°

0-position of actuator drive shaft Supply state 0 ±0.6°

Environmental conditions:

Temperature range -20...+60 °C

Humidity <95% r.h.

49 Bentone

General

10.2.2 Mounting position

Optional

10.2.3 Choice of damper motor variant

An SQN13 damper motor with anticlockwise rotation is used on BG 550 and
BG 650 burners to control the amount of air. An SQN14 damper motor with
clockwise rotation is used on BG 550 BG 650, BG 700, BG 800 and BG 950
burners to control the amount of gas.

10.2.4 Important to remember

• When servicing/replacing a damper motor, select the correct motor for
the desired control as the direction of rotation varies.

• When servicing/replacing a damper motor, clean it and check that the
damper is not sluggish to avoid problems with the damper motor not
managing to make adjustments.

• The tightening torque of 1.5 Nm for the fixing screws must not be
exceeded to prevent damage to the actuator and to ensure that the
actuator does not twist on its mounting surface

• When mounting the actuator, ensure that the permissible axial and
radial loads on the bearing are no not be exceeded

• When fitting the actuator to the controlling element, the correct
mounting order must be observed. It is usually as follows:

1. Screw on the actuator

2. Connect the actuator’s drive shaft to the controlling element using the
coupling pin screw.

• The actuators are supplied with attached connecting cable and plug

• One-time bend when laying the cable: 2 x cable diameter

• Always run the high-voltage ignition cables separate from the unit and
other cables while observing the greatest possible distance.

• The holding torque is reduced when the actuator is disconnected from
power.

50

Bentone

11. Gas train

11.1 DMK gas butterfly damper

11.1.1 Technical specification

Max. operating pressure 500 mbar

Max. differential pressure over
damper

Max. damper setting angle 90°

Required torque:

DMK 512, 515 and 520 min. 50 Ncm

DMK 5065 and 5080 min. 150 Ncm

Throat diameter:

DMK 512 21 mm

DMK 515 32 mm

DMK 520 40 mm

DMK 5065 65 mm

DMK 5080 80 mm

Threaded versions: DMK 512, 515 and 520

Flanged versions: DMK 5065 and 5080

DMK 5065 and 5080 Environmental conditions:

Temperature range -15...70 °C

Humidity <95% r.h.

Gas qualities No nonferrous materials. Suited for

250 mbar

use with gases up to max. max. 0,1
vol. % H2S, dry

General

51 Bentone

General

11.1.2 Installation position

Use with actuator drive any installation position posiable.

11.1.3 Important to remember

• Before replacing a butterfly damper, make sure you order the correct
damper size with the correct inlet diameter.

• When performing installation and service, check whether the gas
damper is in the closed position when the burner is turned off. See
image

• When installing a gas damper, observe the direction of flow shown on
the gas damper.

• After working on a gas damper, check the gas tightness

52

Bentone

11.2 MULTI-BLOCK VGD40… SKP15/25

11.2.1 Technical specification

All components must be installed without being
bent, twisted or subjected to mechanical or thermal
forces which can affect the components.

!

Max. connection pressure:

VGD40.65/SKP15/25 1500 mbar (static pressure when valves are closed)

VGD40.65/SKP15/25 700 mbar (dynamic pressure when valves are open)

VGD40.80/SKP15/25 1500 mbar (static pressure when valves are closed)

VGD40.80/SKP15/25 700 mbar (dynamic pressure when valves are open)

Adjustable regulator pressure:

VGD40.65/SKP15/25 with spring AGA 29 ≤ 22 mbar

VGD40.65/SKP15/25 with spring AGA 22 15 - 120 mbar

VGD40.80/SKP15/25 with spring AGA 29 ≤ 22 mbar

VGD40.80/SKP15/25 with spring AGA 22 15 - 120 mbar

General

Dirt trap Built in (mesh size 0.9 mm)

Solenoid valve V1 SKP15 opening time varies with valve size, 14 s for

max stroke closing time <0,8 s

Solenoid valve V2 SKP25 opening time varies with valve size, 14 s for

max stroke closing time <0,8 s

Voltage / Frequency 50 - 60 Hz 220 - 240 V AC -15 % +10 %

Switch-on duration 100%

Degree of protection IP54

Multi-block connection flange

VGD40.65/SKP15/25 DN65

VGD40.80/SKP15/25 DN80

Environmental conditions:

Temperature range -10...60 °C

Humidity <95% r.h.

Gas qualities No nonferrous materials.

Suited for use with gases up to max. max
0,1 vol. % H2S, dry

53 Bentone

General

11.2.2 Overview

9

19

11

6

18

17

1. V1 SKP15

2. V2 SKP25

3. Motor gas valve

4. V2 Stroke indication

5. Adjustment pressure regulator

6. Measuring nipple/ pressure switch/min/VPS/Pm

7. Connection ¼” pG

8. Impuls tube pG

9. Test nippel pG (measurement of pressure after V2)

10. Connection Pm

11. Connection Pi

19

11

16

7

19

2

7

5

8

14

3 4

20

12

12. Butterfl y damper

13. Electrical connection gas valve V1

14. Electrical connection gas valve V2

15. Indication of V1 and V2 in operation

16. Electrical connection gas pressure switch min/VPS

17. Pressure switch min/VPS

18. Flange connection inlet

19. Data plate

20. Flange connection, outlet

15

19

1

13

15

11

18

10

1085 mm

A gas pressure switch for monitoring that the connection pressure does not get too low is mounted on the multi­block so that it can be used both as a gas pressure switch and to check for tightness. The burner can also be fi tted
with an additional gas pressure switch to monitor that the nozzle pressure does not get too high.

Bentone

54

11.2.3 Installation position

General

11.2.4 Adjusting the multi-block

When the multi-block is used together with the LMV37 control unit with
butterfl y valve on the gas pipe, the multi-block acts as a clean valve, which
is not used to set the correct gas fl ow. However, some adjustment of the
multi-block may help to achieve robust burner function. The regulator on the
multi-block should be set in such a way that the input pressure is reduced
using the regulator; this ensures that any variation in the input pressure will
not affect the pressure leaving the block.

11.2.5 Actuator SKP15

SKP15 is mounted on the fi rst valve of the multi-block in the direction of gas
fl ow. The only function of this actuator is open/close.

11.2.6 Actuator SKP25

SKP25 is mounted on the second valve of the multi-block in the direction of
gas fl ow. This actuator has two functions: open/close and controlling the gas
pressure leaving the multi-block.

11.2.6.1 Adjusting the pressure regulator on
actuator SKP25

1. Remove protective plug X.

2. Adjust the pressure regulator by turning the

adjuster screw with the slotted screwdriver to
the desired output pressure in Pa, see image.
Turning to right = higher regulator pressure
Turning to left = lower regulator pressure

3. Fit protective plug X.

Possible output pressure range 15–120 mbar.
Pressure is measured at the pressure outlet on
SKP25. See section 10.2.2.

X

55 Bentone

General

11.2.6.2 Replacing the spring on the pressure regulator

for an SKP25 actuator

The SKP25 actuator is fi tted with an AGA29 type spring for the regulator at
the factory.

1. Remove protective plug X.

2. Remove pressure regulator screw Y.

3. Take out the spring and replace it.

4. Fit pressure regulator screw Y and set to

the desired regulator pressure.

5. Fit protective plug X.

11.2.6.3 Impulse pipe for pressure
regulator SKP25

On multi-block VGD40…/SKP15/25 there is
an impulse pipe for the nozzle pressure which
is necessary for regulator SKP25 to function
properly. The impulse pipe has an inside
diameter of 4 mm and an outside diameter of 6 mm. The impulse pipe for
the nozzle pressure to the regulator is fi tted at the factory. When replacing
the impulse pipe, a steel pipe must be used with an inside diameter > 4 mm.
The impulse pipe must be protected again breakage and damage. If damage
should occur, the impulse pipe must be replaced before the burner is put
into operation again.

X

Y

56

Bentone

11.3 Double solenoid valve Type DMV-D.../11
Type DMV-DLE.../11

Nominal widths
DN65-80
Electrical connection IEC 730-1
(VDE 0631 T1)

Volt U n ~(AC) 230 V

Valve 2 x Class A

Ambient temperature -15 °C … +60 °C

IP 54

Family 1 + 2 + 3

Max. operating pressure 500 mbar

General

DMV 5065-5080/11

Pressure taps
1, 2, 3, 5 Sealing plug
6, 7 G 1/4
8, 9 G 1/2 Option

Screw plugs 1,2,3 ,5may also be
replaced by a measuring socket

G 1/8 DIN ISO 228.

Concealed connecting bore for
system accessories.

172 515 83 2018-04-05

57 Bentone

General

B

C
C

A
A

4. Mounting

1. Insert setscrews A, refer to Fig. 1

2. Insert seals B.

3. Insert setscrews C.

4. Tighten setscrews A+C. Ensure
correct seating of the seal!

5. Perform leak and functional tests
after mounting.

B

C

C

A
A

5. Lead seal Lead seal eye 2 in 1.5
mm dia. sealing valve. Lead seal
eye 3 in 1.5mm cap stand headed
screw. After setting the requested
pressure setpoint:

1. Close protective valve 1.

2. Route wire through 2 and 3,
Fig. 2.

3. Press lead around wire ends,
keep wire loop short.

Bentone

58

5.

°

Vmin. / mini.> 0.1 x Vmax. / maxi.

°

General

6.

6. DMV Main flow setting only
possible at V1! Set main volume
on open valve. Set valve V1 during
operation.Check setting values
continuously. Smallest setting
volume flow:

9. Replacing the solenoid Versions
with adjusting plate DMV-D 5.../11or
hydraulic brake DMV-DLE 5../11

1. Remove hydraulic brake or
adjusting plate as described
on page 6: ”Replacing the
hydraulic brake or adjusting
disk”, steps 1 - 5.

2. Replace solenoid
Important: Make sure that the
solenoid no. and voltage are
correct!

3. Remount hydraulic brake or
adjust-ing plate as described
on. ”Replacing the hydraulic
brake or adjusting plate”, steps
7 -11.

7. 8.

7. DMV-DLE Rapid stroke
adjustment V start Factory setting
DMV-DLE: Rapid stroke not adjusted

1. Unscrew the adjustment cap E
from the hydraulic brake.

2. Turn the adjustment cap and
use as a tool.

3. Turn a-clockwise = increase
rapid stroke (+).

8. Replacing hydraulic brake unit or
adjustment plate

1. Switch off firing system.

2. Remove locking varnish from

countersunk screw A.

3. Unscrew countersunkscrew A.

4. Unscrew socket headscrew B.

5. Raise adjustment plate C or

hy-draulic brake D.

6. Remove sealing plug E

7. Exchange adjustment plate C

or hydraulic brake D

8. Screw in countersunk and

socket head screw. Only
tighten socket head screw so
that hydraulic brake can just
be turned.

9. Coat countersunk screw A

with locking varnish.

10. Leakage test: Pressure tap at

sealing plug 3

11. Perform functional test.

12. Switch on firing system.

59 Bentone

General

12. Gas pressure regulator Type FRS

Nominal diameters
Rp 3/8 - Rp 2 1/2
DN 40 - DN 150

Never close vent nozzle!

!

Vent plug

Pressure taps

1. Vent plug

2. Connection for external pulse
G 1/4 screw plug ISO 228, on
both sides, optional.

3. G 1/4 screw plug ISO 228, in
inlet pressure range, on both
sides

Vent nozzle

Max. operating pressure 500 mbar

Pressure regulator Class A

Ambient temperature -15 °C … +70 °C

Inlet pressure range 5 - 500 mbar

Family 1 + 2 + 3

Outlet pressure range 2,5 - 200 mbar

60

Bentone

Dimensions [ mm]

General

b

b

e

f

a

Type
Weight Order

h

p

max.

Number

d

Rp/DN

mbar

e

h

d

DN

c

f

a

DN

c

Dimensions mm

a b c d e f g h kg
FRS 507 070 391 500 Rp ¾ 100 130 28 165 G¼ G¼ G1/8 245 1,00
FRS 510 070 409 500 Rp 1 110 145 33 190 G¼ G¼ G1/8 310 1,20
FRS 515 058 446 500 Rp 1½ 150 195 40 250 G½ G¼ G¼ 365 2,50
FRS 520 058 628 500 Rp 2 170 250 47 310 G½ G¼ G¼ 450 3,50
FRS 525 083 303 500 Rp 2½ 230 285 60 365 G½ G¼ G¼ 550 6,00
FRS 5065 058 792 500 DN65 290 285 95 405 G½ G¼ G¼ 590 7,50
FRS 5080 079 681 500 DN80 310 285 95 405 G½ G¼ G¼ 590 10,00

Do not use unit as lever.

DN 40 50 65 80 100 125 150
Rp 3/8 1/2 3/4 11 1/2 2 21/2 -- -- -- -­M

max

70 105 225 340 610 1100 1600 2400 5000 6000 7600
(Nm) < 10s
T

max

35 50 85 125 200 250 325 400 -- -- -­(Nm) < 10s

61 Bentone

General

Adjustment of outlet pressure
(setpoint adjustment)
Factory setting: Standard spring p 2
10-30 mbar

1.

1. Unscrew protective cap A.

2. Adjustment (+) Setting spindle

B ”Turn counter-clockwise”
= Increasing outlet pressure
(setpoint)

or

2.
Adjustment (-) Setting spindle B
”Turn clockwise” = Reducing outlet
pressure (setpoint)

4. Check setpoint

5. Screw on protective cap A.

6. Attach lead seal (Page 5).

2.1.

B

A

B

Replace setting spring 3-4

1. Remove protective cap. A.

Release spring by turning
adjustment spindle B counter
clockwise. Turn spindle to
stop.

2. Unscrew complete adjustment

device B and remove spring C.

3. Insert new spring D.

4. Assemble complete

adjustment device and adjust
desired off-set.

5. Screw on protective cap A.

Stick adhesive label E onto
typeplate.

6. Attach lead seal.

3.

4.

B

E

A
B

C/D

62

Bentone

13. Electric equipment

13.1 Safety system

Safety systems must be installed in accordance with regulations that are
applicable for the appliance. This may differ according to the process burner
are installed in to. Se local regulations for information.

Safety system cables must be run in separate cables outgoing signal must
not come in same cable as incoming signal. Signals must be in different
harnesses for safety reasons.

Safety system as door switches, water level, pressure, temperature and
other safety limiters must be installed in safety loop according to process.

The switch for high gas pressure can be installed for different uses.
Installation must be carried out pursuant to applicable regulations.

• The switch can be installed so that it reacts either to inlet pressure or
pressure according to the multi-block pressure regulator.

• The high gas pressure switch can be installed to the connection pipe
between the multi-block and the burner head, and will then function as
a power monitor.

• Installation will block burner operation and a manual restart will be
required.

Installation must be carried out pursuant to applicable regulations.

General

63 Bentone

General

13.2 Wiring diagram

64

Bentone

13.3 Wiring diagram RWF 50:3

General

65 Bentone

General

13.4 Wiring diagram RWF 50:2

66

Bentone

13.5 Wiring diagram Jumo 316

General

67 Bentone

General

13.7 List of components

M1 Burner motor

R1 UV-detector

K1 Motor contactor with thermal overload

protector

T1 Ignition transformer

S8 Air pressure switch

B1 Ionization electrode

S1 Operating switch

S7 Main switch

S9 Gas pressure switch

S15 Control thermostat, 3-pole

S20 Main switch

S30 External reset

Y1 Gas solenoid valve

Y2 Gas solenoid valve

M2 Damper Motor air

M3 Damper Motor (gas)

A2 Power control

A6 Power control R316

A6(2) PT 100-sensor, Thermocouple, current/voltage

U2 UV-detector QRC

X1 Connection terminal board

X3 Plug-in contact, burner

X4 Plug-in contact, boiler

X5 Plug-in contact, stage 2, burner

X6 Plug-in contact, stage 2, boiler

X7 Plug-in contact, 3 phase, burner

X8 Plug-in contact, 3 phase, boiler

X9 Plug-in contact, power controller R316, burner

X10 Plug-in contact, power controller R316

X10(2) Thermocouple, current/voltage

X15 Plug-in contact, power controller, burner

X16 Plug-in contact, power controller

X40 Contact power controller

X41 Contact power controller

SC Safety circuit

OC Operation circuit

F2 Operating fuse

Max loading K1
Connection A1,A2 / 95, 96 / 97, 98 Max 0,2A/15W

13.6 Components,
electrical cabinet

1. Contact for damper motor, air SQN 14

(BG550/650)
Contact for damper motor, air SQM 33
(BG700-950)

2. Contact for damper motor, gas SQN 13

3. AZL display for LMV automatic control unit

4. Contactor with surge protection

5. Transformer

6. Fuse holder

7. Branching point/measuring point for

ionisation

8. LMV automatic control unit

9. Quick-release switch for regulator

3

2

1

9

8

7

6

68

Bentone

5

4

14. LMV37 automatic
control unit

The LMV37 automatic control unit is a piece of control equipment that can
be used for many different types of burner.
In the following review of how this control equipment works and can be
adjusted, the description will focus on the type of burner covered by this

14.1 System structure/function
description

The LMV37.4... is a microprocessor-based burner management system with
matching system components for the control and supervision of forced draft
burners of medium to high capacity.

Integrated in the basic unit of the LMV37.4... are:

• Burner management system complete with valve proving system

• Electronic air-fuel ratio control system for a maximum of 2 SQM3... or
SQN1... actuators

• Control of VSD air fan

• Modbus interface

General

At the time of writing, of the parameters mentioned above, motor frequency
control and communication via modbus are not available on the burner
models described in this manual.

Example: Modulating gas burner

The system components (display and operating unit, actuators) are
connected directly to the LMV37.4... basic unit. All safety-related digital
inputs and outputs of the system are monitored by a contact feedback
network.

69 Bentone

General

14.2 General information

The burner management system is operated and parameterized via the
AZL2… display. The AZL2… with LCD and menu-driven operation facilitates
straightforward use and targeted diagnostics. When making diagnostics, the
display shows the operating states, the type of error and the point in time
the error occurred. Passwords protect the different parameter levels of the
burner against unauthorized access. It is possible to select from different
types of fuel trains and make use of a wide choice of individual parameter
settings (program times, configuration of inputs / outputs, etc.), enabling the
installer to make optimum adaptations to the relevant application. A change
of parameters varies in levels of authorization, this manual will give info on
those that might be changed by the installer. The actuators are driven by
stepper motors and can be positioned with high resolution. Specific features
and actuator settings are defined by the LMV37.4... basic unit.

14.3 Technical Data Basic unit
LMV37.4...

Mains voltage

LMV37.400A2 AC 230 V -15 % / +10 %

Mains frequency 50 / 60 Hz ±6 %

Safety class I, with parts according to II and III to

DIN EN 60730-1

Perm. mains primary fuse
(externally)

Unit fuse F1 (internally) 6.3 AT (DIN EN 60127 2 / 5)

Mains supply: Input current
depending on the operating state of
the unit

Under voltage

Safety shutdown from operating
position at mains voltage

LMV37.400A2 Approx. AC 186 V

Restart on rise in mains voltage

LMV37.400A2 Approx. AC 195 V

Max. 16 AT

70

Bentone

Gas direct ignition «G», «G mod», «G mod pneu»

t1

5 s5 s 30 s

General

RAST plug
pin number

X3-04 pin 1/2

X5-03 pin 1/4

X10-05
pin 2 / pin 3/4
X10-06 pin 1/2

X3-02 pin 1/2

X5-01 pin 2/3

X5-01 pin 2/3

X5-02 pin 2/3

X9-04 pin 2/3

X5-02 pin 2/3

RAST plug
pin number

X3-05 pin 1

X4-02 pin 2/3

X6-03 pin 2/3

X8-02 pin 1/3

X7-01 pin 2/3

X7-02 pin 2/3

X3-05 pin 2

Function / Inputs

R (ON)

LP

POC *)

Function / Outputs

M

Z

V1

V2

AL

p

P

P

P

P

X54

X53

X74

Fuel

0°

Air

0°

0°

Legend to the sequence diagrams

71 Bentone

General

Not all phases, times, indices, abbreviations and symbols appear in the individual sequence diagrams or
are needed there!

!

Phase numbers

00 Lockout phase

02 Safety phase

10 Home run

12 Standby (stationary)

22 Fan motor (M) = ON, safety valve (SV) = ON

24 Air damper (LK)

30 Prepurging

36 Air damper (LK)

38 Preignition ignition (Z) = ON

39 Test pressure switch-min (Pmin)

40 Fuel valve (V) = ON

42 Ignition (Z) = OFF

44 Interval 1 (t44)

50 Safety time 2 (TSA2)

52 Interval 2 (t52)

60 Operation 1 (stationary)

62 Operation 2 air damper (LK)

70 Afterburn time (t13)

72 Air damper (LK)

74 Postpurge time (t8)

78 Postpurge time (t3)

80 Evacuation of test space

81 Atmospheric pressure test

82 Filling of test space

83 Gas pressure test

90 Gas shortage waiting time

fuel valve (V) – position

ignition (Z) – position

low-fire (KL) – position

Rated load (NL) – position

Valve proving is performed depending on the parameter settings:
Simultaneously with the prepurge time and/or the afterburn time.

Bentone

72

Times

TSA1 1st safety time

TSA2 2nd safety time

t1 Prepurge time

t3 Postpurge time

t8 Postpurge time

t13 Afterburn time

t44 Interval 1

t52 Interval 2

Indices

1) Parameter: Short/long prepurge time for oil only
Short/long on time of oil pump – time

2) Only with valve proving during startup

3) Parameter: With/without alarm in the event of start
prevention

4) If signal is faulty in the startup phase, phase 10 is next,

otherwise phase 70

5) Max. time safety phase, then lockout

6) Time from occurrence of start prevention to signaling

7) Only in case of valve proving during startup (valve proving via

pressure switch-min)

8) Only in case of startup without valve proving (valve proving via

pressure switch -min)

9) Inverse logic in case of valve proving via pressure switch-min

10) Parameter: Oil pressure min-input
1 = active from phase 38
2 = active from safety time

11) Only with fuel train Lo and 2 fuel valves

12) Parameter 223: Repetition limit value gas pressure switch-min
in connection with gas shortage program
parameter 246 (phase 90)

13) Max. drop-in/response time for air pressure switch

14) Alternative to valve proving

15) Alternative to pressure switch-max (Pmax) or POC

General

73 Bentone

General

Abbreviations

AL Alarm

FS Flame signal

GM Fan motor contactor

LP Air pressure switch

M Fan motor

P LT Pressure switch for valve proving

Pmax Pressure switch-max

Pmin Pressure switch-min

POC Proof of closure

PV Pilot valve

R Temperature or pressure controller

SB Safety limiter

SK Safety loop

STB Safety limit thermostat

SV Safety valve

WM Water shortage

V1 Fuel valve 1

V2 Fuel valve 2

VP Combustion pressure switch

Z Ignition transformer

SA Actuator

SA-K Low-fire position of actuator

SA-N Postpurge position of actuator

SA-R Home position of actuator

SA-V Rated load position of actuator

SA-Z Ignition load position of actuator

Symbols

Permissible position range

In Standby mode: Actuator is allowed to travel within

the permissible position range, but is
always driven to the home position;
must be in the home position for
phase changes

0°/10%
90°/100%

Position as supplied (0°)
Actuator fully open (90°)

Input/output signal 1 (ON)
Input/output signal 0 (OFF)
Input permissible signal 1 (ON) or 0 (OFF)

74

Bentone

14.4 Connection and internal diagram

General

1

X3-03X3-05

111

11

X9-04 X7-02

X5-01

11

7546a14e/0913

Shielding:

End switch burner flange
(component of safety loop)

Supply signal for end switch burner flange

Fan motor contactor

Alarm

Continuous fan operation

Extra valve SV

Ignition Z

Fuel valve V3 / pilot PV

Pressure switch leakage test gas (PLT) or GP (VPS)

Pressure switch-min-gas (Pmin) / -min-oil

Pressure switch-max-gas / -max-oil (Pmax) or POC

Power supply phase conductor (L)

Power supply neutral conductor (N)

Protective earth (PE)

Supply signal for safety loop

Safety loop

Fuel valve V2

Wiring point for series valve

Fuel valve V1

Fuel indication oil / gas

Reset / manual locking

Supply for external load controller

external load controller Open / Stage 2

external load controller Open / Stage 3

external load controller (On / Off)

Supply signal for air pressure switch (LP)

Air pressure switch (LP)

QRA....

+

Supply signal (L)

GND

QRB.../ QRC...signal voltage

Ionization probe (ION)

Protection earth (PE)

Supply for fuel meter

Input fuel meter

X3-04

X7-01

X3-02

1 1 1 11 1 1 1 1

X75 X10-05

For shielding the cables on the VSD, refer to:

• Siemens SED2 VSD Commissioning Manual
(G5192), chapters 4 and 7, or

• Danfoss Operation Manual VLT 6000
(MG60A703), chapter Installation

75 Bentone

General

Display / BCI

PWM fan

PWM fan

Power source Controller

Power source

Controller

Building

automation

Signal reference GND

automation

Building

7554a15e/1209

Signal reference

DC 5 V

ACT0_IN_B

Actuator

Fuel

ACT0_IN_A

Actuator

ACT0_OUT_B

Fuel

ACT0_OUT_A

UAC_SA

ACT1_IN_B

Actuator

Air

ACT1_IN_A

Actuator

ACT1_OUT_B

Air

ACT1_OUT_A

UAC_SA

Power supply sensor

Power supply sensor

Speed feedback signal

Speed feedback signal

PWM speed output

Controller input 4...20 mA

PWM speed output

Controller input 4...20 mA

RxD1

TxD1

GND

GND

GND

GND

Analog

Analog

1

1

1

1

COM X92FUEL X54AIR X53

1

1

1

X64

1

1

BCI

X56

VSD X74

1

Display / BCI

DC 5 V

TxD0

RxD0

Signal reference GND

Signal reference GND

Sensor connection (optional):

Sensor connection (optional):

1. Inductive NAMUR proximity switch

1) Inductive NAMUR proximity switch

2. Reed contact

3. Inductive DC proximity switch with pnp output

2) Reed contact

3) Inductive DC proximity switch

with pnp output transistor

Function earth for shield

Function earth for

connection

shield connection

Speed

feedback

VSD

Power supply for speed

Power supply for

sensor

feedback

speed sensor

Speed

Speed input

Speed input

Signal reference

Signal reference

VSD control DC 0/2...10V

VSD control DC 0 / 2...10 V

Signal reference

Signal reference

23245

DC 24V external

DC 24 V external

1

transistor

1)

+

-

3)

+

-

76

Bentone

F

F

A

A

VSD

AF

F

A

/reset

15. Operation

15.1 LMV37 automatic control unit

15.1.1 Explanation of display and buttons

P

General

Button Function

Button F

- For adjusting the fuel actuator

(keep

Button A

- For adjusting the air actuator

(keep

V

h min

VSD

AF

Figure 3: Description of unit/display and buttons

depressed and adjust the value by pressing

depressed and adjust the value by pressing

s %

/reset

ESC

or

or

Buttons A and F: VSD function

- For changing to parameter setting mode P

(press simultaneously

Info and Enter button

- For navigating in info or service mode

• Selection (symbol flashing) (press button for <1 s)

• For changing to a lower menu level (press button for 1…3 s)

• For changing to a higher menu level (press button for 3…8 s)

• For changing the operating mode (press button for >8 s)

- Enter in parameter setting mode

- Reset in the event of fault

- One menu level down

and

77 Bentone

General

ESC

Button Function

- button

- For decreasing the value

- For navigating during curve adjustments in info or service mode

+ button

- For increasing the value

- For navigating during curve adjustments in info or service mode

+ and - button: Escape function

(press

- No adoption of value

- One menu level up

and simultaneously)

Fault status message

Flame present

Valve controlled

Ignition controlled

Fan motor controlled

Oil preheater on

Heat request from controllers

Parameter setting mode

Info mode

Service mode

Actuator closing

Actuator opening

Unit of current display

Figure 4: Meaning of display

P

V h

min

s %

78

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15.2 List of phase displays

The display shows which phase the burner is in. The table below lists the
codes and explains what these mean for the various phases. Not all the
phases described in the table are shown or are suitable for the burners
described in this manual.

Phase Function

Ph00 Lockout phase

Ph01 Safety phase

Ph10 Home run

Ph12 Standby (stationary)

Ph22 Fan ramp up time (fan motor = ON, safety valve = ON)

Ph24 Traveling to the prepurge position

Ph30 Prepurge time

Ph36 Traveling to the ignition position

Ph38 Preignition time

Ph39 Valve proving filling time

(test of pressure switch-min when fitted between fuel valves V1 and V2)

Ph40 1st safety time (ignition transformer ON)

Ph42 1st safety time (ignition transformer OFF)

Ph44 Interval 1

Ph50 2nd safety time

Ph52 Interval 2

Ph60 Operation 1 (stationary)

Ph62 Max. time low-fire (operation 2, preparing for shutdown, traveling to low-fire)

Ph64 Switching back to pilot: Modulation to ignition load

Ph65 Switching back to pilot: Interval 2 waiting time

Ph66 Switching back to pilot: Reactivation of ignition + pilot

Ph67 Switching back to pilot: Shutdown of main valves

Ph68 Switching back to pilot: Pilot mode waiting phase

Ph69 Switching back to pilot: Pilot mode waiting phase for burner startup

Ph70 Afterburn time

Ph72 Traveling to the postpurge position

Ph74 Postpurge time (no extraneous light test)

Ph78 Postpurge time (t3) (abortion when load controller ON)

Ph80 Valve proving test evacuation time

Ph81 Valve proving test time atmospheric pressure, atmospheric test

Ph82 Valve proving filling test, filling

Ph83 Valve proving time gas pressure, pressure test

Ph90 Gas shortage waiting time

General

79 Bentone

General

15.3 Automatic control unit levels

When working on burners there are different levels at which the automatic
control unit can be accessed.

The info and service levels can be accessed without a password; error
codes, error history and basic information about the burner can be viewed
on these levels.

A code is required to enter settings for the burner.

Normal display

>1 s

/reset

Change to normal

Change to normal
display

display

>3 s

Info level

>3 s

<8 s

/reset

or

<8 s

/reset

or automatic return

Service level

after timeout of
menu operation
(parameter 127)

>8 s

80

Bentone

>1 s

Parameter level

Parameter level

15.3.1 Structure of parameter levels

Internal parameter
(password level)

General

/reset

!

Entering the password

Air-fuel ratio control curves
(primary setting)

Bild 388e/1109

The following sections explain the
operating philosophy behind the
parameter levels using a number of

/reset

General

/reset

Basic unit

/reset

/reset

Air-fuel ratio control

/reset

Actuator

examples.

Error histery

Process data

/reset

/reset

81 Bentone

General

15.3.2 Parameter of level info

No. Parameter

167 Fuel volume resettable (m³, l, ft³, gal)

162 Operating hours resettable

164 Startups resettable

163 Operating hours when unit is live

166 Total number of startups

113 Burner identification

107 Software version

108 Software variant

102 Identification date

103 Identification number

104 Preselected parameter set: Customer code

105 Preselected parameter set: Version

143 Reserve

End

15.3.3 Parameter of level service

No. Parameter

954 Flame intensity

960 Actual flow rate (fuel throughput in m³/h, l/h, ft³/h, gal/h)

121 Manual output

Undefined = automatic operation

922 Incremental position of actuators

Index 0 = fuel

Index 1 = air

936 Standardized speed

161 Number of faults

701

.

.

.

725

Error history: 701-725.01.Code
ex. 701. 01. xxx

chronological error list index value of index

Indexlista:

01 = error code

02 = diagnostic code

03 = error class

Bentone

82

04 = error phase

05 = startup counter

06 = output

VSD

AF

V h

min

s %

Bild 43/1107

Bild 44/1207

/reset

15.3.4 Access code for service engineer level

The code for logging into service level is found on the plate on the inside of the cover for the electrical

!

connections box.

General

Press button combination

When releasing the buttons, 7 bars appear the first of whishes.

P

Press

P

Press

or

V

to confirm the value

to select a number or letter.

s %

min

h

to display CodE

83 Bentone

General

V h

min s %

Bild 45/1207

V h

min s %

Bild 47/1207

/reset

The value entered changes to a minus sign (-)

P

Complete the rest of the password according to the principle described.

P

After entery of the last character the password must be confirmed by pressing

The next bar starts flashing.

Example: Password consisting of 4 characters.

84

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V h

min

s %

Bild 95/0707

VSD

AF

V h min s %

Bild 94/0707

/reset

V h min s %

Bild 96/0707

/reset

15.4 Setting the automatic control unit

To set the correct ratio between air and fuel, it is important to understand
how this type of burner is controlled. This chapter will describe the procedure
to follow when adjusting a burner with an LMV37 automatic control unit.

Note! When power is turned on for an unadjusted automatic control
unit, “OFF UPr” is always shown in the display.

!

15.3.5 Setting an automatic control unit which has
not previously been set or lost its settings

Check that the burner is receiving power and that gas is being supplied to
the burner.

Move the switch (X) on the burner to the ON position.

The text “OFF UPr” is shown in the display.

Follow the procedure indicated below to set the automatic control unit.

General

X

An unprogrammed unit or a unit whose operating mode has been reset or

P

Press

To continue with the setting work, you need to log into service engineer level. See 5.3.4.

After login is complete, continue with the setting work as shown below.

P

Press

P

> 1 second to access login mode.

to select parameter 400 for initial commissioning and for setting air-fuel controll.

changed displays OFF U Pr.

201: appears fl ashing.

Press

201 for selecting the operating mode.

to go to the settings for air-fuel ratio control and parameter

85 Bentone

General

Ensure that the fuel train is correctly set in compliance with the type of burner used.

!

No Parameter Actuator controlled

201 Burner operating mode (fuel train, modulating / multistage, actuators, etc.) Air Fuel

-- = undefined (delete curves) • •

1 = gas modulating (G mod) • •

2 = gas modulating with pilot valve (Gp1 mod) • •

3 = gas modulating with pilot valve (Gp2 mod) • •

4 = oil modulating (Lo mod) • •

5 = oil 2-stage (Lo 2 stage) • -

6 = oil 3-stage (Lo 3 stage) • -

7 = gas modulating (G mod pneu) • -

8 = gas modulating (Gp1 mod pneu) • -

9 = gas modulating (Gp2 mod pneu) • -

10 = oil modulating with gas pilot (LoGp mod) • •

11 = oil 2-stage with gas pilot (LoGp 2-stage) • -

12 = oil modulating with 2 fuel valves (Lo mod 2V) • •

13 = oil modulating with gas pilot and 2 fuel valves (LoGp mod 2V) • •

14 = gas modulating (G mod pneu, 0 active) - -

15 = gas modulating with pilot (Gp1 mod pneu, 0 active) - -

16 = gas modulating with pilot (Gp2 mod pneu, 0 active) - -

17 = oil 2-stage (Lo 2-stage, 0 active) - -

18 = oil 3-stage (Lo 3-stage, 0 active) - -

19 = gas modulating only when firing on gas (G mod fuel active) - •

20 = gas modulating with pilot only when firing on gas (Gp1 mod fuel active) - •

21 = gas modulating with pilot only when firing on gas (Gp2 mod fuel active) - •

22 = oil modulating only when firing on oil (Lo mod fuel active) - •

86

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ESC

/reset

ESC

V h min s %

Bild 96/0707

V h

s

min %

Bild 100/0807

/reset

/reset

ESC

This manual describes “1=gas modulating (Gmod)” type burners.

!

General

Press:

Press:

P

To the next parameter

P

to return to parameter level.

Press

to return to parameter level.

l

Parameter 542 to
activate the VSD / PWM fan.
You can choose:
0 = VSD / PWM fan OFF
1 = VSD / PWM fan ON

to save selected setting.

If the parameter is set correctly, move directly to the next parameter with

Press

Select your setting by pressing one of the buttons

Press

Press:

To the next parameter

to adjust parameter 542.

to save the setting for parameter 542: VSD

to return to parameter level.

Back to the previous parameter

This manual describes “0=VSD
OFF” type burners.

!

87 Bentone

General

V

h

s

min %

Bild 101/0807

/reset

/reset

ESC

V h

min

s %

Bild 102/0707

F

V h

min

s %

Bild 104/0707

A

Parameter 641 to control speed standardization of the VSD.

P

If the parameter is set correctly, move directly to the next parameter with

You can choose:
0 = speed standardization of VSD OFF
1 = speed standardization of VSD ON
After setting speed standardization to 1, standardization of the VSD
commences. If successful, the parameter is reset to 0. Negative values
indicate errors (refer to chapter Automatic speed standardization).

Press:

Select your setting by pressing one of the buttons

Press:

Press:

To the next parameter

P

Press simultaneously

to adjust parameter 641: speed standardization

to save the setting for parameter 641: VSD

to return to parameter level.

Display P0 appears flashing.

Curvepoint for ignition load.

and

Set a suitable fuel-air mixture so that the burner starts.

or

!

This manual describes
“0=speed standardization” type

!

burners.

to set ignition position P0 of the fuel damper.

Example: 30.0

P

Press simultaneously

88

Bentone

and

or

to set ignition position P0 of the air actuator.

General

V h

min

s %

Bild 107/0707

F

A

V h

s

min %

Bild 110/0807

V h

min

s %

Bild 112/0707

Example: 22.0

P

Press simultaneousl

This menu option is only shown if parameter 542 has been set to 1, for burners with VSD.
This manual only describes burners without VSD.

!

P

To the next curvepoint

P

and

and

Example: 20.0

P9 appears flashing.

Curvepoint for high-fire.

Same procedure as with P0

!

or

Note:

If

to adjust speed nO of the load controller.

is pressed first, the display jumps to 90!

Back to the previous curvepoint

When curvepoint 9 is set, press

to start the burner.

89 Bentone

General

)

Air

Angle

Curvepoints

It is important to set P0 and P9 as accurately as possible.
These settings are used to calculate the remaining

Air

curvepoints once the burner has started.

Fuel

Curvepoints P2 to P8 are automatically computed as a straight line
between P1 and P9.

Example 1 = gas modulating

Curvepoint Value 1 fuel Value 2 air

Curvepoint P1 is automatically
set to the same value as P0 on

P0, P1 and P9 are set as described

P0 30.0 22.0

P1 32.0 24.0

the first start. This value can,
however, be adjusted once the
burner has started.

P9 80.0 90.0

Curvepoint Value 1 fuel Value 2 air

P2 38.0 32.3

P2 through P8 have automatically

been calculated:

P3 44.0 40.5

P4 50.0 48.8

P5 56.0 57

P6 62.0 65.3

P7 68.0 73.5

P8 74.0 81.8

To simplify the setting work involved for each curvepoint, do as follows:

1. Check that good combustion is achieved at P1; adjust if necessary.

2. Move along to P2 and check/adjust for good combustion.

3. Calculate the curvepoints between P2 and P9 by pressing > on

.

4. Now move along to P3 and repeat the process described.

5. Repeat the process until curvepoint P9 has been reached.

This method makes the setting work easier and faster to complete. A more “correct”
setting is obtained straight away. The process may need to be redone if the wrong
input power was set for P9 initially. For this reason, be extremely careful when entering
the first setting of P9.

Bentone

90

General

V h

min

s %

Bild 113/0707

/reset

V h

min

s %

Bild 114/0707

V h

min

s %

Bild 10/0707

V h

min

s %

Bild 115/0707

V h

min

s %

Bild 116/0707

V h

min

s %

Bild 117/0707

Identification of start for setting the curve parameters.

P

Press

to continue.

The burner motor will then start and a number of phases in the automatic control unit are completed. A menu then
appears, asking whether further changes to ignition load P0 need to be made.
If the switch on the burner is in the OFF position, the automatic control unit will not proceed from Ph12: Move the
switch to the ON position to continue.

Phase Standby (stationary)

P

Phase Fan ramp up (fan motor = ON, safety valve = ON)

P

Phase Traveling to prepurge position

P

Phase Prepurging

P

P

Phase Traveling to ignition position

91 Bentone

General

V h

min

s %

Bild 118/0707

F

A

V h

min

s %

Bild 117/0707

V h

min

s %

Bild 119/0707

V h

min

s %

Bild 120/0707

V h

min

s %

Bild 121/0707

V h

min

s %

Bild 122/0707

P

Ignition position P0 can only be set after

symbol

or is no longer highlighted.

When the symbol

press

P

P

to continue.

For fuel, keep

press

or is no longer highlighted,

Phase Traveling to ignition position

Phase Preignition

depressed, for air

or

,

to adjust the value.

Phase for first safety time (ignition transformer ON)

P

Phase for first safety time (ignition transformer OFF), preignition time OFF

P

Phase Interval 1

P

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92

General

V h

min

s %

Bild 118/0707

F

A

V

h

min

s %

Bild 123/0707

F

A

The burner has ignited and is burning. Should the burner not ignite, repeat the above procedure but adjust ignition
load P0 to get the burner to start.

The P0 menu will appear when the burner starts successfully.
It is now possible to adjust ignition load P0 while the burner is in operation.

Ignition position P0 can only be set when

symbol

P

For fuel, keep

or is no longer highlighted.

depressed, for air

,

When the symbol

press

P

to continue to the next curvepoint.

press

or is no longer highlighted,

Low flame position P1 can only be set when

symbol or is no longer highlighted.

The value is adopted from P0

For fuel, keep

press

When symbol

or

to adjust the value.

depressed, for air

or

to adjust the value.

or is no longer highlighted.

,

93 Bentone

General

V h

min

s %

Bild 124/0707

ESC

V h

min

s %

Bild 126/0707

/reset

/reset

ESC

Back to the previous curvepoint
When the symbol or is no longer highlighted,

press

P

!

Move along to curvepoint (high-fire point) P9; allow the burner to reach high-fire point P9.

When P9 flashes, press

!

to start calculating curvepoints.

When changing from P1 to P2 for the first time, curvepoints P2…P8
automatically calculated and saved.

CALC appears for a short moment.

When reviewing curvepoints after calculating them, check and adjust each curvepoint in order to achieve
good combustion.

If the burner goes into blocking mode when increasing to full load, restart the setting procedure and adjust
the curvepoints in order to avoid the burner entering blocking mode.

The maximum capacity is displayed.

P

The benefit of setting the maximum input power in this way is that at a
later date it is easy to change the input power without having to adjust the
amount of air and gas. The setting curve is therefore adjusted to the highest
input power that the installation can handle. The desired input power is then
set by entering how much of the maximum power is required.

If the display shows - - - -, the maximum capacity has not yet been
specified.

The system can be run up to 100%.

You can press
maximum capacity.

Adjust the setting downwards or upwards using the buttons

Press

Press

to go to editing mode, enabling you to change the

to save the setting.

to return to parameter level.

94

Bentone

General

V h

min

s %

Bild 127/0707

/reset

/reset

ESC

ESC

V h min s %

Bild 94/0707

ESC

V h

min

s %

Bild 128/0707

To the next parameter

The minimum capacity is displayed.

P

If the display shows - - - -, the minimum

capacity has not yet been entered.

The system can be run down to 20%.

You can press

to go to editing mode, enabling you to

change the minimum capacity.

Adjust the setting downwards or upwards using the buttons

Press

Press

to save the setting.

to return to parameter level.

The benefit of setting the minimum input power in this way is that at a
later date it is easy to change the input power without having to adjust the
amount of air and gas. The setting curve is therefore adjusted to the lowest
input power that the installation can handle. The desired input power is then
set by entering how much of the minimum power is required.

Completing parameterization of the curve

Back to the previous parameter

When symbol  or  is no longer highlighted, you can press ESC a

P

Press

P

to exit parameter level.

second time.

The settings for air-fuel ratio control by the LMV37.4... are now completed.

95 Bentone

General

15.4.1 The parameters below may need to be set
according to the nature of the installation.

To change any of the parameters set out below, go into parameter level and
make the required adjustments.

15.4.1.1 Pressure switch-min input

236 Gas: Pressure switch-min input
0 = inactive
1 = pressure switch-min (upstream of fuel valve 1)
2 = valve proving via pressure switch-min (between fuel

valves 1 and 2)

Factory settings marked with bald text.

15.4.1.2 Execution valve proving

241 Gas: Execution valve proving

0 = no valve proving

1 = valve proving on startup

2 = valve proving on shutdown

3 = valve proving on startup and shutdown

Factory settings marked with bald text.
At an input power higher than 1,200 kW, a tightness test must be performed.
At an input power lower than 1,200 kW, performing a tightness
test is optional. It is essential for all changes to take local
standards and regulations into consideration.

15.4.1.3 No-flame positions fuel actuator

501 No-flame positions fuel actuator

Index 0 = no-load position

Index 1 = pre purge position

Index 2 = post purge position

Factory settings marked with bald text.

15.4.1.4 No-flame positions air actuator

502 No-flame positions air actuator

Index 0 = no-load position

Index 1 = pre purge position

Index 2 = post purge position

Factory settings marked with bald text.

This manual describes “2=valve proving via
pressure switch-min (between fuel valves 1

!

and 2)” type burners.

Depending on the type of burner, the
automatic control unit should be set to

!

either “0=no valve proving” or “1=valve
proving on startup”.

The automatic control unit should be set to
“Index 0 = no-load position”.

!

The automatic control unit should be set to

!

“Index 0 = no-load position”.

15.4.1.5 Active detector flame evaluation

221 Gas: Active detector flame evaluation

0 = QRB / QRC

1 = ION / QRA

Factory settings marked with bald text.
When replacing detector flame between ionisation and UV-cell (QRA), no
change to the setting parameters is required; simply disconnect and connect
ionisation and UV-cell (QRA) respectively..

Bentone

96

15.4.1.6 Prepurging

222 Gas: Prepurging

Index 0 = deactivated

Index 1 = activated

Factory settings marked with bald text

When using valve proving and 2 fuel valves of class A, prepurging is not
required (conforming to EN 676).

If not activated, it is nevertheless performed if one or several of the following
conditions apply:

• Alterable lockout position

• After an off time of >24 hours

• In the event of a power failure (power-on)

• In the event of shutdown due to an interruption of gas supply (safety
shutdown)

General

15.4.1.7 Prepurging time

225 Gas: Prepurging time
20 s – 60 min

15.4.1.8 Postpurge time

234 Gas: Postpurge time (no external light test)
0,2 s – 108 min

15.4.1.9 Postpurging in lockout position

190 Postpurging in lockout position

0 = deactivate (no-load position)
1 = active (postpurge position)

Factory settings marked with bald text.

When the Purging in the lockout position function is used, the fan may only be powered via a contactor

!

and must not be connected directly to LMV37.4 (X3-05 pin 1)!

97 Bentone

General

When active, the Alarm in the event of start prevention function (parameter

210) is only possible to a limited extent!

The LMV37.4 system simply moves the actuators to the postpurge position.
A fan release contact cannot be controlled, as the alarm relay of the
LMV37.4 system cuts off the power supply to the outputs. With the Alarm in
the event of start prevention function, an external circuit that may be present
for controlling the fan release contact for purging in the lockout position is
activated via start prevention in standby mode.

15.4.1.10 Continuous fan

A burner can be converted into a continuous fan using conversion kit
119 230 01. See the documentation provided with the kit for instructions on
how to perform the conversion.

15.4.1.11 Continuous operation

The LMV37 automatic control unit permits continuous operation of the
burner, provided that the burner’s detector flame is an ionisation detector
flame.

When forced intermittent operation is activated, the unit shuts down for a
moment after 23 hours and 45 min of uninterrupted operation, followed by
an automatic restart.
When forced intermittent operation is inactivated the burner will run
continuously.
Forced intermittent operation is a standard feature.
239 Gas: Forced intermittent operation
0 = inactivate

1 = activated

Factory settings marked with bald text.

98

Bentone

V h min s %

Bild 94/0707

/reset

V h

min

s %

Bild 113/0707

15.4.2 Adjusting settings of previously set

VSD

AF

automatic control unit

With the warm settings, the burner is started up after pressing the Info button. Air-fuel ratio control can
now be accurately set while the fl ame is present. When traveling along the precalculated curve to high-fi re

!

point P9, all intermediate curvepoints (P2…P8) must be set.

Automatic operation is released when – after reaching P9 – the curve settings are quit by pressing ESC. If
the curve settings are aborted earlier (ESC or shutdown due to fault), start prevention OFF UPr continues
to be active until all points are set.

If required, the gas pressure can be set at the high-fi re point. In case the gas pressure is changed, all
points must be checked by traveling along the curve downward and – if required – must be readjusted.
safety shutdown, parameterization of the curve is quit.

General

Check that the burner is connected to gas and has gas pressure.

Check that the burner is connected to an electrical supply.

Move the switch X to the ON position.

The display Y on the burner will now be active.

Follow the description below to set the burner.

Press

To continue with the setting work, you need to log into service engineer
level. See 5.3.4.

After login is complete, continue with the setting work as shown below.

P

Press

> 1 second to access login mode.

to select parameter 400 for initial commissioning and for setting air-fuel ratio control

XY

P

Identifi cation of start for setting the curve parameters.

99 Bentone

General

/reset

V

h

min

s %

Bild 123/0707

F

A

When there is a request for heat.

If, during the time the curve is parameterized, an error occurs which leads to safety shutdown,

!

parameterization of the curve is quit.

The startup process on the automatic control unit now takes place. To see
what happens in each phase, go to chapter 3.3.
When the automatic control unit has completed the start procedure and the
burner has started, the setting values for curvepoint 1 will appear; settings
for the minimum input power will be shown in the display. See display
representation below. If you wish to adjust the ignition load,

this can be done by pressing
display.

P

To the next curvepoint

when curvepoint 1 is shown in the

Low-flame position P1 can only be set when symbol or is no longer
highlighted.
The value is adopted from P0.

For fuel, keep

Press

When symbol

curvepoint P2 can be selected with

back to the previous curvepoint

and

depressed, for air

or is no longer highlighted, the next

,

to adjust the value.

100

Bentone