BALTUR Minicomist 7 Kullanım kılavuzu

Marka: BALTUR

Model: Minicomist 7

Tip: Kullanım kılavuzu

Bu kılavuz için de uygundur

Minicomist 11

MINICOMIST 7

MINICOMIST 11

ORIGINAL INSTRUCTIONS ARE (IT)

ORİJİNAL KULLANIM KILAVUZU (IT)

0006081159_201102

Kullanım

talimatları kılavuzu.

Manual

instructions for use

0006081159_201102

- Before using the burner for the rst time please carefully read the chapter “WARNINGS NOTES FOR THE USER : HOW TO USE

THE BURNER SAFELY” in this instruction manual, which is an integral and essential part of the product. The works on the burner

and on the esystem have to be carried out only by competent people.

- Read carefully the instructions before starting the burner and service it.

- The system electric feeding must be disconnected before starting working on it.

- If the works are not carried out correctly it is possible to cause dangerous accidents.

- Brülörü ilk defa kullanmadan önce lütfen ürünün bütünleşik ve lüzumlu bir parçası olarak brülörle beraber verilen bu kullanma kılavuzu

içinde yer alan “BRÜLÖRÜN GÜVENLE KULLANILMASI İÇİN KULLANICIYA UYARI NOTLARI” bölümünü dikkatle okuyunuz. Brülör

ve sistem üzerindeki çalışmalar sadece yetkili personel tarafından yapılmalıdır.

- Brülörü çalıştırmadan veya onarımına başlamadan önce kullanma kılavuzunu dikkatle okuyunuz.

- Brülör üzerinde onarıma başlamadan önce sistemin elektrik beslemesi kesilmelidir.

- Talimatlara titizlikle uyulmayıp, çalışmalar düzgün yürütülmediği tehlikeli kazaların oluşması mümkündür.

4 / 18

0006081159_201102

BALTUR S.p.A.

Via Ferrarese 10 - 44042 CENTO (Ferrara) ITALIA

Tel. 051.684.37.11 Fax 051.685.75.27/28

(International Tel. ++39.051.684.37.11 - Fax ++39.051.683.06.86)

http://www.baltur.it - http://www.baltur.com - E-MAIL info@baltur.it

04/01/2010

Declaration of Conformity

We declare that our products

BPM...; BGN…; BT…; BTG…; BTL…; TBML...; Comist…;

GI…; GI…Mist; Minicomist…; PYR…; RiNOx…; Spark...;

Sparkgas...; TBG...;TBL...; TBML ...; TS…; IBR...; IB...

(Variant: … LX, for low NOx emissions)

Description:

forced air burners of liquid, gaseous and mixed fuels for residential and

industrial use meet the minimum requirements of the European Directives:

90/396/CEE ...............................................(D.A.G.)

89/336/CEE - 2004/108/CE ........................(C.E.M.)

73/23/CEE – 2006/95/CE ...........................(D.B.T.)

2006/42/CEE .............................................(D.M.)

and conform to European Standards:

UNI EN 676:2008 (gas and combination, gas side)

UNI EN 267:2002 (diesel and combination, diesel side)

These products are therefore marked:

0085

Dr. Riccardo Fava

Managing Director / CEO

Important / note

Information

Warning / Attention

Indice analitico

COMBINED DUNGS GAS VALVE ...............................................................................................................................................17

CHECKS PRIOR LIGHT OIL FIRING - DUAL FUEL BURNER’S FIRING INDICATION - ELECTRICAL CONNECTIONS ........11

FITTING THE BURNER TO THE BOILER AND CONNECTING THE GAS PIPE ........................................................................9

GAS BURNER CONTROL DEVICE GAS LME 22.. .....................................................................................................................15

MAINTENANCE ...........................................................................................................................................................................12

NOTES ON USE OF PROPANE (L.P.G.) .....................................................................................................................................13

STARTING UP AND REGULATION WITH LIGHT OIL - STARTING UP AND REGULATION WITHMETHANE GAS .................12

TECHNICAL DATA AND OVERALL DIMENSIONS ......................................................................................................................7

ELECTRIC DIAGRAM ...................................................................................................................................................................34

5 / 18

0006081159_201102

FOREWORD

These warning notes are aimed at ensuring the safe use of the compo-

nents of heating systems for civil use and the production of hot water.

They indicate how to act to avoid the essential safety of the components

being compromised by incorrect or erroneous installation and by improper

or unreasonable use. The warning notes provided in this guide also seek

to make the consumer more aware of safety problems in general, using

necessarily technical but easily understood language. The manufacturer

is not liable contractually or extra contractually for any damage caused

by errors in installation and in use, or where there has been any failure to

follow the manufacturer’s instructions.

GENERAL WARNING NOTES

• The instruction booklet is an integral and essential part of the product

and must be given to the user. Carefully read the warnings in the bo-

oklet as they contain important information regarding safe installation,

use and maintenance. Keep the booklet to hand for consultation when

needed.

• Equipment must be installed in accordance with current regulations,

with the manufacturer’s instructions and by quali ed technicians. By

the term ‘quali ed technicians’ is meant persons that are competent in

the  eld of heating components for civil use and for the production of

hot water and, in particular, assistance centres authorised by the manu-

facturer. Incorrect installation may cause damage or injury to persons,

animals or things. The manufacturer will not in such cases be liable.

• After removing all the packaging make sure the contents are complete

and intact. If in doubt do not use the equipment and return it to the

supplier. The packaging materials (wooden crates, nails, staples, plastic

bags, expanded polystyrene, etc.) must not be left within reach of chil-

dren as they may be dangerous to them. They should also be collected

and disposed on in suitably prepared places so that they do no pollute

the environment.

• Before carrying out any cleaning or maintenance, switch off the equi-

pment at the mains supply, using the system’s switch or shut-off sy-

stems.

• If there is any fault or if the equipment is not working properly, de-ac-

tivate the equipment and do not attempt to repair it or tamper with it

directly. In such case get in touch with only quali ed technicians. Any

product repairs must only be carried out by BALTUR authorised assi-

stance centres using only original spare parts. Failure to act as above

may jeopardise the safety of the equipment. To ensure the ef ciency

and correct working of the equipment, it is essential to have periodic

maintenance carried out by quali ed technicians following the manufac-

turer’s instructions.

• If the equipment is sold or transferred to another owner or if the owner

moves and leaves the equipment, make sure that the booklet always

goes with the equipment so it can be consulted by the new owner and/

or installer.

• For all equipment with optionals or kits (including electrical), only origi-

nal accessories must be used.

WARNING NOTES FOR THE USER HOW TO USE THE BURNER SAFELY

BURNERS

• This equipment must be used only for its expressly stated use: applied

to boilers, hot air boilers, ovens or other similar equipment and not

exposed to atmospheric agents. Any other use must be regarded as

improper use and hence dangerous.

• The burner must be installed in a suitable room that has ventilation in

accordance with current regulations and in any case suf cient to ensure

correct combustion

• Do not obstruct or reduce the size of the burner’ air intake grills or the

ventilation openings for the room where a burner or a boiler is installed

or dangerous mixtures of toxic and explosive gases may form.

• Before connecting the burner check that the details on the plate corre-

spond to those of the utility supplies (electricity, gas, light oil or other

fuel).

• Do not touch hot parts of the burner. These, normally in the areas near

to the  ame and any fuel pre-heating system, become hot when the

equipment is working and stay hot for some time after the burner has

stopped.

• If it is decided not to use the burner any more, the following actions must

be performed by quali ed technicians:

a) Switch off the electrical supply by disconnecting the power cable from

the master switch.

b) Cut off the fuel supply using the shut-off valve and remove the control

wheels from their position.

c) Render harmless any potentially dangerous parts.

Special warning notes

• Check that the person who carried out the installation of the burner  xed

it securely to the heat generator so that the  ame is generated inside

the combustion chamber of the generator itself.

• Before starting up the burner, and at least once a year, have quali ed

technicians perform the following operations:

a) Set the burner fuel capacity to the power required by the heat ge-

nerator.

b) Adjust the combustion air  ow to obtain combustion yield of at least

the minimum set by current regulations.

c) Carry out a check on combustion to ensure the production of no-

xious or polluting unburnt gases does not exceed limits permitted

by current regulations.

d) Check the adjustment and safety devices are working properly.

e) Check the ef ciency of the combustion products exhaust duct.

f) Check at the end of the adjustments that all the adjustment devices

mechanical securing systems are properly tightened.

g) Make sure that the use and maintenance manual for the burner is

in the boiler room.

• If the burner repeatedly stops in lock-out, do not keep trying to manually

reset but call a quali ed technicians to sort out the problem.

• The running and maintenance of the equipment must only be carried

out by quali ed technicians, in compliance with current regulations.

6 / 18

0006081159_201102

ELECTRICAL SUPPLY

• The equipment is electrically safe only when it is correctly connected to an

ef cient ground connection carried out in accordance with current safety

regulations. It is necessary to check this essential safety requirement.

If in doubt, call for a careful electrical check by a quali ed technicians,

since the manufacturer will not be liable for any damage caused by a

poor ground connection.

• Have quali ed technicians check that the wiring is suitable for the

maximum power absorption of the equipment, as indicated in the technical

plate, making sure in particular that the diameter of cables is suf cient

for the equipment’s power absorption.

• Adapters, multiple plugs and extension cables may not be used for the

equipment’s power supply.

• An ominpolar switch in accordance with current safety regulations is

required for the mains supply connection.

• The electrical supply to the burner must have neutral to ground

connection. If the ionisation current has control with neutral not to ground

it is essential to make a connection between terminal 2 (neutral) and the

ground for the RC circuit.

• The use of any components that use electricity means that certain

fundamental rules have to followed, including the following:

- do not touch the equipment with parts of the body that are wet or damp

or with damp feet

- do not pull on electrical cables

- do not leave the equipment exposed to atmospheric agents (such as

rain or sun etc.) unless there is express provision for this.

- do not allow the equipment to be used by children or inexpert

persons.

• The power supply cable for the equipment not must be replaced by the

user. If the cable gets damaged, switch off the equipment, and call only

on quali ed technicians for its replacement.

• If you decide not to use the equipment for a while it is advisable to switch

off the electrical power supply to all components in the system that use

electricity (pumps, burner, etc.).

GAS, LIGHT OIL, OR OTHER FUEL SUPPLIES

General warning notes

• Installation of the burner must be carried out by quali ed technicians

and in compliance with current law and regulations, since incorrect

installation may cause damage to person, animals or things, for which

damage the manufacturer shall not can be held responsible.

• Before installation it is advisable to carry out careful internal cleaning

of all tubing for the fuel feed system to remove any residues that could

jeopardise the proper working of the burner.

• For  rst start up of the equipment have quali ed technicians carry out

the following checks:

• If you decide not to use the burner for a while, close the tap or taps that

supply the fuel.

Special warning notes when using gas

• Have quali ed technicians check the following:

a) that the feed line and the train comply with current law and

regulations.

b) that all the gas connections are properly sealed.

• Do not use the gas pipes to ground electrical equipment.

• Do not leave the equipment on when it is not in use and always close

the gas tap.

• If the user of is away for some time, close the main gas feed tap to the

burner.

• If you smell gas:

a) do not use any electrical switches, the telephone or any other object

that could produce a spark;

b) immediately open doors and windows to create a current of air that

will purify the room;

c) close the gas taps;

d) ask for the help of quali ed technicians.

• Do not block ventilation openings in the room where there is gas

equipment or dangerous situations may arise with the build up of toxic

and explosive mixtures.

FLUES FOR HIGH EFFICIENCY BOILERS AND SIMILAR

It should be pointed out that high ef ciency boilers and similar discharge

combustion products (fumes) at relatively low temperatures into the  ue.

In the above situation, traditional  ues (in terms of their diameter and heat

insulation) may be suitable because the signi cant cooling of the combustion

products in these permits temperatures to fall even below the condensation

point. In a  ue that works with condensation there is soot at the point the

exhaust reaches the atmosphere when burning light oil or heavy oil or the

presence of condensate water along the  ue itself when gas is being burnt

(methane, LPG, etc.). Flues connected to high ef ciency boilers and similar

must therefore be of a size (section and heat insulation) for the speci c use

to avoid such problems as those described above.

WARNING NOTES FOR THE USER HOW TO USE THE BURNER SAFELY

7 / 18

0006081159_201102

MOD.

MINICOMIST 7 MINICOMIST 11

BURNER OUTPUT

MIN kW 38,5 58,4

MAX kW 66,8 103

FLOW RATE

MIN m³/h 3,9 5,9

MAX m³/h 6,7 10,4

PRESSURE In order to obtain the maximum ow rate

CE MIN mbar 20 20

UNI-CIG MIN mbar 12 20

FLOW RATE

MIN kg/h 3,3 4,9

MAX kg/h 5,7 8,7

BURNER OUTPUT

MIN kW 38,5 58,4

MAX kW 66,8 103

VISCOSITY Light oil 1,5°E a 20°C

VOLTAGE 50Hz Volt 1~ 230V

FAN MOTOR 50Hz kW 0,13 - 2800 r.p.m.

PUMP MOTOR 50Hz kW 0,075 - 2780 r.p.m.

IGNITION TRANSFORMER 50Hz 8 kV - 20 mA

STANDARD ACCESSORIES

BURNER FIXING FLANGE N° 1 N° 1

INSULATING GASKET N° 1 N° 1

INSULATING CORD N° 1 N° 1

FILTER N°1 - 3/8” N°1 - 3/8”

FLEXIBLE PIPE N°2 - 1/4” x 3/8” N°2 - 1/4” x 3/8”

STUD BOLTS N°4 M8 N°4 M8

EXAGONAL NUTS N°4 M8 N°4 M8

FLAT WASHERS N°4 Ø8 N°4 Ø8

WORKING FIELD

TECHNICAL DATA AND OVERALL DIMENSIONS BURNERS

8 / 18

0006081159_201102

COMPONENTS LIST

1 - Ignition transformer

2 - Light oil electrovalve

3 - Pump

4 - Pump motor

5 - Air pressure switch

6 - Air regulation sector

7 - Fan motor

8 - Gas/light oil switch

9 - Terminal board box

10 - Electric panel

11 - Reset button

12 - Flame detector

13 - Combustion head

14 - Insulating gasket

15 - Sliding ange

16 - Flame disc regulation screw

17 - Monoblock gas valve

0002570110

MOD. A A1 A2 B B1 B2 C D

min

max

min

max

MINICOMIST 7 510 300 210 510 205 305 510 40 156 95 3/4” 130 155 M8 115

MINICOMIST 11 510 300 210 510 205 305 510 40 156 95 3/4” 130 155 M8 115

9 / 18

0006081159_201102

FITTING THE BURNER TO THE BOILER AND

CONNECTING THE GAS PIPE

The burner is tted with a sliding attachment ange on the burner

head. When tting the burner to the boiler, this ange must be

correctly positioned is that the burner head penetrates the boiler by

the amount specied by the manufacturers of the boiler.

When the burner is tted correctly to the boiler, proceed whit the

connection of the gas feed pipe (see

BT 8780 and BT 1387).

The size of the gas feed pipe must be proportional to its length and

to the gas delivery rate in accordance with the UNI standard (see

diagram), and it must be perfectly airtight and properly tested before

running the initial tests on the burner.

It is essential to t a connector to this pipe, near to the burner, for the

easy dismounting of the burner and/or the opening of the boiler door.

FOR BURNERS WITH DUNGS GAS VALVE mod. MB.....

The DUNGS mod. MB.... valve has a lter and gas pressure sta-

biliser, which means that only the cut-off cock and the vibration

damper joint should be tted to the gas feed pipe. A pressure

reduction unit should be installed outside the heating system only

in cases where the gas pressure exceeds the level permitted by

the standard (400 mm.C.A.).

It is recommended to put a bend directly on the burner gas train

before tting the detachable connector. This is to allow the opening

of the boiler door, when the connector itself has been opened.

These details are clearly illustrated in the following diagram.

HYDRAULIC CONNECTIONS (LIGHT OIL)

The connection pipes between tank and burner must be comple-

tely tight. We suggest to use copper or steel pipes of an adequate

diameter (see list and drawing).

At the rigid pipes ands it must be tted the fuel’s detection gates.

Filters, exible pipes and relative connection couplings are supplied

along with burner. Pump is equipped with suitable connecting points

(see drawing) for detection instruments (pressure gauge and vacu-

ummeter). Pressure drop in suction must not exceed 4,6 mm.W.G.

= to 35 cm.Hg. for a proper and silent operation. Probable max.

pressure on suction and on the return 1,5 bar.

UPPER VIEW

BOILER

GATE

DOOR

DOOR OPENING

A DIRECTION

BURNER

MULTIBLOC VALVE

PIPE FITTING

ANTI-VIBRATION

JOINT

10 / 18

0006081159_201102

SIPHON FEED SYSTEM WITH FEED FROM THE TOP OF THE TANK

SUCTION FEED SYSTEM

GRAVITY FEED SYSTEM

Dimension P = 3,5 m. (max.)

H - Height difference between minimum fuel tank level and pump axis.

L - Total length of pipeline, including vertical lenght. Subtract 0,25 mt.

for every elbow or gate valve.

N.B. Comply with existing regulations regarding apparatus

required in the pipeline system

1 Tank

2 Feeding pipe

3 Wire-net lter

4 Pump

5 Degasier

6 Suction pipe

7 Return pipe

8 Automatic fuel interception

device at burner shut off

9 Non-return valve

Pump axis

1 Tank

3 Wire-net lter

4 Pump

6 Suction pipe

7 Return pipe

8 Automatic fuel interception

device at burner shut off

9 One-way valve

10 Bottom valve

Pump axis

1 Tank

3 Wire-net lter

4 Pump

6 Suction pipe

7 Return pipe

10 Bottom valve

H Total lenght meters

meters Ø i = 10 mm Øi.= 12 mm

1 20 30

2 25 35

3 30 40

4 35 45

H Total lenght meters

meters Ø i = 10 mm Øi.= 12 mm

1 20 30

2 25 35

3 30 40

4 35 45

H Total lenght meters

meters Ø = 10mm Øi. 12 mm

0,5 15 27

1 12 23

1,5 9 19

2 7 15

2,5 4 10

3 - 7

3,5 - -

11 / 18

0006081159_201102

HYDRAULIC DIAGRAM FOR

8502cmt18.tif

Light oil electrovalve

Nozzle

Light oil pump

(12 bar pressure)

Return

Suction

Foot valve

ELECTRICAL CONNECTIONS

Electric lines should be at an adequate distance from

hot parts. Make sure that all electrical connections are

made with ex electric wire, with suitable size for the

voltage and absorbed power.

Maximum current absorbed = 600 VA

Minimum section of the feed line = 1mm

with 230V.

For the LGB 22 control box, the intensity of the cell

current should be between 200 microamperes and 500

microamperes.

DUAL FUEL BURNER’S FIRING INDICATION

We suggest to start the burner with the liquid fuel, as in this case

the delivery is bound to the nozzle size whilst the gas delivery can

be easily changed by acting on the relative capacity adjuster.

If the burner is in the automatic version, the selector for the fuel

change connects a cyclic relay which inserts, tanks to an auxiliary

relay, components for the use of both fuels (valves, pressure

switches, pump etc.).

After having changed the position of the selector from gas to light oil

and voiceovers, it occurs to leave it stopped for at least 10 seconds

which is the time the cyclic relay needs to carry out its program.

ATTENTION

If the selector is moved from a position to another before the period

of 10 seconds, the cyclic relay stops in the middle of its program not

allowing to use the burner both with gas and with light oil.

Nozzle

G.P.H.

Pump pressure bar

8 9 10 11 12 13 14

0,60 2,04 2,16 2,28 2,39 2,50 2,60 2,70

0,65 2,21 2,34 2,47 2,59 2,71 2,82 2,92

0,75 2,55 2,70 2,85 2,99 3,12 3,25 3,37

0,85 2,89 3,06 3,23 3,39 3,54 3,68 3,82

1,00 3,40 3,61 3,80 3,99 4,16 4,33 4,50

1,10 3,74 3,97 4,18 4,38 4,58 4,77 4,95

1,20 4,08 4,33 4,56 4,78 5,00 5,20 5,40

1,25 4,25 4,50 4,75 5,00 5,20 5,40 5,60

1,35 4,59 4,87 5,13 5,38 5,62 5,85 6,07

1,50 5,10 5,41 5,70 5,90 6,24 6,50 6,75

1,65 5,61 5,95 6,27 6,58 6,87 7,15 7,42

1,75 5,95 6,31 6,65 6,98 7,29 7,58 7,87

2,00 6,80 7,21 7,60 7,97 8,33 8,67 8,99

2,25 7,65 8,15 8,55 8,97 9,37 9,75 10,12

2,50 8,50 9,01 9,50 9,97 10,41 10,83 11,24

CHECKS PRIOR LIGHT OIL FIRING

Make sure that the nozzle with sprouting angle at 60° is suitable to

the boiler’s capacity.

In the list hereunder you nd the delivery values in kg/h of light oil

related to the nozzle’s size and to the pump’s pressure (normally

12 bar). (Please note that 1 light oil kg corresponds to 10.200

kcal about).

Make sure that the protrusion of the combustion head inside

the combustion chamber is according to boiler manufacturer’s

instructions.

Make sure that the return pipe in tank has no obstructions, such as

gates closed caps etc.

Probable obstructions could cause faults on the pump’s shaft or

ex pipe.

Open slightly the air purge device of the pump.

Disconnect the wire number 39 which feeds the pump motor from

the terminal on the contactor “K1” and connect it from moment the

terminal “K1.56” of the “input junction box” so as to feed directly

the pump motor.

Now close the reverser-switch on the burner and the general one

and make sure that the rotation sense is correct. Thus the pump

motor is connected and starts the pump witch sucks the light oil.

When the light oil ow the air purge device open the main switch

so as to stop the motor.

Be set original connections to the corresponding terminals.

The burner is thus ready to operate at light oil.

TABLE OF NOZZLE DELIVERY RATES IN Kg/h OF LIGHT

OIL

12 / 18

0006081159_201102

STARTING UP AND REGULATION WITH LIGHT

OIL

1) Check that the pump and fan motors rotate in the right direction.

2) Make sure that the discharge of combustion products can take

place freely (chimney lock-gates should be open) and that there

is water in the boiler.

3) Open as much as considered necessary, the combustion air

regulator, and open by about half the air passage between

the disk and the head by operating the regulating screw of the

ame disk.

4) Close the main switch and the burner switch in order to connect

the burner and wait for it to start up. The burner is turned on in

this way, and will carry out the pre-ventilation phase. If the air

pressure exceeds the value at which the air pressure switch

has been set, the ignition transformer will be connected and

subsequently the light oil valve will be inserted. With the burner

operating, correct if necessary, the combustion air delivery.

5) The burner is tted with a device which optimises the combustion

by reducing or increasing the air passage between the disk and

the head. Maximum smoke intensity permissible is N° 2 of the

Bacharach scale with a Carbon Dioxide (CO

) value between

10 and 13 %. It is normally necessary to reduce the air passage

between the disk and the head when operating with a reduced

fuel delivery. This passage must be proportionately opened

more when the burner is working with a higher fuel delivery.

This manoeuvre can be carried out by operating the regulating

screw of the ame disk. After having modied the ame disk

position, it is then necessary to verify that ignition occurs

correctly.

STARTING UP AND REGULATION WITHMETHANE

GAS

N.B. Please refer to the last pages where specic instructions are

given with regard to regulating the gas delivery in function

with the type of valve tted on the burner.

In order to proceed with ignition, it is indispensable to carry out a

purge of the air contained in the pipeline and check, if the burner is

three-phase, that the sense of rotation of the motor is correct.

Then proceed as follows:

1) Make sure that the discharge of combustion products can take

place freely (chimney lock-gates should be open) and that there

is water in the boiler.

2) Open, as much as considered necessary, the combustion air

regulator, and open by about one third the air passage between

the head and the disk by operating the regulating screw of the

ame disk.

3) Operate the regulators incorporated in the gas valves in such

a way as to obtain the gas delivery presumed necessary.

N.B. Please refer to the last pages where specic instructions

are given with regard to regulating the gas delivery in

function with the type of valve tted on the burner.

4) Give current to the burner by connecting the main switch and

the burner switch. The burner is turned on in this way and will

then carry out the pre-ventilation phase. If the air pressure

exceeds the value at which the air pressure switch has

been set, the ignition transformer will be connected and,

subsequently, the gas valves will be inserted. The safety valve

opens completely while the principle valve, which incorporates

the regulation devices, opens twice. When it opens the rst time,

it realises the starting output immediately. The second time, it

opens gradually and when it is completely open the burner is

operating at the maximum value at which the maximum output

regulator has been set. At rst ignition, successive “shutdowns”

can occur, due to the following reasons:

a) The gas pipeline has not been adequately purged of air

and therefore the quantity of gas is not sufcient to allow

a stable ame.

b) A “shutdown” with flame presence can be caused by

ame instability, due to an incorrect air/gas ratio. This

can be remedied by varying the quantity of air and/or gas

delivered, in order to nd the correct ratio. It could also

be caused by an incorrect distribution of air/gas in the

combustion head. This can be corrected by operating the

regulation device of the combustion head – close more

(by loosening the regulating screw) or open more (by

tightening the regulating screw) the air passage between the

head and the gas diffuser. This can be done by operating

the regulating screw of the ame disk.

5) With the burner on, adapt delivery to the value which

corresponds with the potentiality desired (Methane gas = 8550

kcal/m

), by reading the meter. This output can be modied by

operating the special regulator incorporated in the valve, as

explained above.

6) Control that combustion occurs correctly by using the

appropriate instruments. The maximum permissible for Carbon

Monoxide (CO) is 0,1%; with a Carbon Dioxide (CO

) value of

between 8 and 10%.

7) After regulation, turn the burner off and on again several times

to check that ignition occurs correctly.

SAFETY CHECKS

After regulation, always check:

1) That the burner stops by “opening” the thermostat and the air

and gas pressure switches;

2) The “shut down” by darkening the photoelectric cell (UV).

To unblock the burner, press the appropriate pushbutton.

MAINTENANCE

At the end of the heating season, it is good practice

to clean the gas and light oil filters, the combustion head

(disk, insulators, and nozzles), the combustion air passages and

the photoelectric cell (UV). It is advisable to use wooden or plastic

instruments to clean the nozzle passages. Nozzles should be re-

placed after 12 months’ use.

13 / 18

0006081159_201102

UV CELL

Even the slightest greasiness will compromise the passage of the ul-

traviolet rays through the UV photoelectric cell bulb, thus preventing

the sensitive internal element from receiving the quantity of radiation

necessary for it to function properly. Should the bulb be fouled by

light oil, fuel oil, etc., it is indispensable to clean it thoroughly.

It should be pointed out that even by simply touching the bulb with

the ngers, it is possible to leave a slight greasiness, which could

compromise the working of the UV photoelectric cell.

The UV cell does not “see” daylight or light from an ordinary lamp. It

is possible to verify its sensibility with a ame (or cigarette lighter or

a candle) or with the electric spark that occurs between electrodes

in an ordinary ignition transformer. To ensure that the UV cell works

properly, its current value should be sufciently stable so as not to

fall below the minimum value required for the specic control box.

It may be necessary to search experimentally for the best position

by sliding (axial or rotation movement) the body that contains the

photoelectric cell in respect to the fastening clamp. An inspection

can be carried out by inserting a microammeter, with an adequate

scale, in series to one of the two UV photoelectric cell connection

wires. It is obviously necessary to respect the polarity (+ e -). For

the LGB 22 control box, the cell current should be between 200

microA. and 500 microA.

NOTES ON USE OF PROPANE (L.P.G.)

We think it would be useful to inform you on a few points regarding

use of liquid propane gas (L.P.G.).

1) Approximate evaluation of running costs

a) 1 m

of liquid gas in gaseous state has heating power

inferior by about 22.000 Kcal.

b) to obtain 1 m

of gas about 2 Kg of liquid gas are required.

This is equal to about 4 litres of liquid gas.

According to the above, it can be deduced that by using liquid gas

(L.P.G.) the following approximate equivalence is obtained:

22.000 kcal = 1 m

(in gaseous state) = 2 Kg of L.P.G. (liquid)

= 4 litres L.P.G. (liquid). From this, running costs can be cal-

culated.

2) Safety measures

Liquid gas (L.P.G.) has, in it gaseous state, a specic gravity

superior to that of air (specic gravity of propane gas in relation

to air = 1,56) and therefore does not disperse in air like natural

gas, which has a lower specic gravity (specic gravity of natural

gas in relation to air = 0,60), but precipitates and spreads at

ground level as if it were a liquid. In view of the above principle,

the Ministero dell’Interno ( Home Ofce) has set limitations for

use of Liquid Gas in circular n° 412/4183 of 6 February 1975.

We will look into the points we think most important:

a) Liquid Gas (L.P.G.) for burners and/or boilers can only be

used in rooms above ground and overlooking open spaces.

Installations using liquid gas in basements or cellars are not

permitted.

b) Rooms where liquid gas is used must have ventilation inlets

without closing devices, located on external

walls with a surface of at least 1/15 of the room’s area and a

minimum of 0,5 m

. At least one third of the entire surface of

these inlets must be located in the lower part of the external

wall, ush with the oor.

3) Requirements for liquid gas plant to ensure correct opera-

tion and safety

Natural gasication, from cylinder unit or tank, can only be used

for low power plant. Supply capacity at gaseous stage, depen-

ding on tank dimensions and minimum external temperature,

is shown in the following table but only as a rough guide.

4) Burner

The burner must be ordered specically for use with liquid

gas (L.P.G.) so that it is equipped with gas valves of sufcient

dimensions to ensure correct ignition and gradual regulation.

Our valves have dimension is planned for use at a supply

pressure of about

300 mm.W.C. We suggest gas pressure be checked at the

burner by using a water column pressure gauge.

N.B. Maximum and minimum burner pressure (kcal/h) obviously

remains that of the original natural gas burner (L.P.G. has hea-

ting power superior to that of natural gas. Therefore, in order

to burn fully, it requires air quantity in proportion to the thermal

power created).

5) Combustion control

To limit consumption and avoid serious trouble, adjust combu-

stion by using the appropriate instruments.

It is absolutely essential to check that the percentage of carbon

monoxide (CO) does not exceed maximum permitted value of

0,1 % (use a phial analyser or other similar instrument). Please

note that our guarantee does not cover burners operating on

liquid gas (L.P.G.) in plant for which the above measures have

not been taken.

Minimum

temperature - 15 °C - 10 °C - 5 °C - 0 °C + 5 °C

Tank 990 l. 1,6 Kg/h 2,5 Kg/h 3,5 Kg/h 8 Kg/h 10 Kg/h

Tank 3000 l. 2,5 Kg/h 4,5 Kg/h 6,5 Kg/h 9 Kg/h 12 Kg/h

Tank 5000 l. 4 Kg/h 6,5 Kg/h 11,5 Kg/h 16 Kg/h 21 Kg/h

14 / 18

0006081159_201102

GENERAL DIAGRAM FOR TWO-STAGE L.P.G. PRESSURE REDUCTION FOR BURNER OR BOILER

15 / 18

0006081159_201102

GAS BURNER CONTROL DEVICE GAS LME 22..

16 / 18

0006081159_201102

GAS BURNER CONTROL DEVICE GAS LME 22...

Legend …. Steady on p Red

¡ Off l Yellow

n Green

Color code table for multicolor signal lamp (LED)

Status Color code Color

Waiting time «tw», other waiting states

¡....................................... Off

Ignition phase, ignition controlled

l ¡ l ¡ l ¡ l ¡ l

Flashing yellow

Operation, ame o.k.

¡....................................................

Green

Operation, ame not o.k.

n ¡ n ¡ n ¡ n ¡ n

Flashing green

Extraneous light on burner startup

n p n p n p n p n

Green-red

Undervoltage

l p l p l p l p l Yellow-red

Fault, alarm

p.....................................................

Red

Error code output (refer to «Error code table»)

p ¡ p ¡ p ¡ p ¡

Flashing red

Interface diagnostics

p p p p p p p p

Red icker light

Operational status During startup, status indication takes place according to the following table:

indication

Error code table

Red blink code of signal lamp (LED) «AL» at term. 10 Possible cause

2 blinks

l l

No establishment of ame at the end of «TSA» -Faulty or soiled fuel valves

-Faulty or soiled ame detector -Poor adjustment of burner, no fuel -Faulty

ignition equipment

3 x blinks

l l l

«LP» faulty -No or faulty air pressure signal after completion «t10» - «LP» is

welded in normal position

4 blinks

l l l l

Extraneous light when burner startup

5 blinks

l l l l l

On Time out «LP» - «LP» is welded in working position

6 blinks

l l l l l l

On Free

7 blinks

l l l l l l l

Too many losses of ame during operation (limitation of repetitions) -Faulty or

soiled fuel valves -Faulty or soiled ame detector -Poor adjustment of burner

8 x blinks

l l l l l l l l

On Free

9 blinks

l l l l l l l l l

On Free

10 blinks

l l l l l l l l l l

Off Wiring error or internal error, output contacts, other faults

During the time the cause of fault is diagnosed, the control outputs are deactivated

- Burner remains shut down

- External fault indication remains deactivated

- Fault status signal «AL» at terminal 10, according to the error code table

The diagnostics of the cause of fault is quit and the burner switched on again by resetting the burner

control. Press thelockout reset button for about 1 second (< 3 seconds).

After lockout. the red fault signa llamp will remaln steady

on. In thal conditio visual diagnostics of the cause of fault

acccording to the error code table can be activated by

presslng the lockout reset button for more than 3 secon-

ds. Pressing the reset button again for at least 3 seconds,

interface diagnostics will be activated

The followlng sequence activates the diagnostics of Ihe

cause of fault:

17 / 18

0006081159_201102

N° 0002910301

COMBINED DUNGS GAS VALVE (MONOBLOC) MOD. MB-DLE ... B01

1 - Acces to stabilizer regulating screw

2 - Acces knob for manoeuvring ignition output regulator

3 - Regulating knob for maximum delivery

4 - Locking screw for regulating knob

5 - Principle valve (2-stage opening)

6 - Safety valve (rapid)

7 - Pressure tap (to control pressure in exit from valve)

8 - Pressure tap (to control pressure in exit from stabilizer (Pa)

9 - Pressure tap (to control pressure at valve entry (Pe)

10 - Pressure stabilizer

11 - Pressure stabilizer bleed

12 - Small entry lter

13 - Pressure tap (to control pressure at valve entry)

14 - Minimum pressure switch

ow direction

electrical

connections

entry ange

exit ange

plug

18 / 18

0006081159_201102

The gas valve unit DUNGS MB - DLE... is made up of:

1) A safety valve which closes opens rapidly.

2) A principle valve which opens in two stage (5). The rst opening

stage occurs rapidly (release) and is adjustable by unscrewing

the knob (2) and inserting the back part of the regulating pin

underneath. The + and symbol can be seen on the head of the

valve and these indicate the direction in which the pin should be

turned in order to increase or the ignition output (the rst stage of

the valve opening). By rotating in a clockwise direction, the initial

delivery (ignition ame) can be reduced; in an anti-clockwise

direction, the initial delivery is increased. The complete run from

zero to maximum, and viceversa, is slightly more than three

turns (40% of the total opening). When the rst opening stage

has taken place, the valve comtinues to open slowly and takes

15 seconds to reach the maximumopen position. To regulate

maximum delivery desired, loosen the locking screw (4) (the one

with the protruding head and not the one locked and sealed with

paint) and turn knob (3). Rotate in a clockwise direction to reduce

delivery and in anti-clockwise direction to increase it.

It should be pointed out that when the regulating knob is turned, the

end - of - the - run which limits the operating of the valve moves;

therefore, when the knob has been turned untilit reaches the - sign,

the valve will not open and the burner will not ignite. To get ignition,

it’s necessary to turn the knob in an anti-clockwise direction towards

the + sign. The complete run from zero to maximum and viceversa is

neary six turns of the knob. This regulating operation (for maximum

and ignition output) must be carried out without forcing against the

end - of - the - run - positions.

3) The pressure stabilizer (10) can be regulated (see table) by

manoeuvring the screw which can be reached by sliding the

cover (1) to one side. The complete run from the maximum to

the position and viceversais about 80 turns. Do not force against

the end - of - the - run positions. Around the screw are arrows

with symbols which indicate the sense of rotation: to increase

pressure, rotate in a clockwise direction, to reduce it, rotate in

an anti-clockwise direction. This stabilizer hermetically closes

“upstream” and “downstream” when there is no ow of gas.

Dfferent springs to obtain different pressure value from those

described above are not foreseen.

To regulate the pressure stabilizer, connect a water mano-

meter to the rubber tube holder installed on the tap (8) in

correspondence with the exit of the stabilizer.

4) The small entry lter (12) can be reached for cleaning by removing

one of the two side closing plates.

5) The minimum pressure switch (14) and the maximum pressure

switch (15). To regulate it remove the transparent cover and

operate the black knob. The reference mark is the small rec-

tangle to be found on the yellow disk which the regulating knob

rotates around.

6) At entry, a tap (13) has been tted to the connction ange to

measure the entry pressure. At the exit of the connection ange,

there is also a tap (7) to measure the pressure in exit.

VALVE INLET MAX PRESSURE ADJUSTTABLE OUTLET PRESSURE TYPE OF GAS

MODEL (PE) mbar FROM THE STABILIZER (PA) mbar

MB ...B01 S 20 200 from 4 to 20 Natural Gas / L.P.G.

7) The side pressure taps (9), indicated as Pe, are in communication

with the entry pressure.

8) The side pressure taps (8) indicated as Pa, are used to measure

the pressure coming out of the stabilizer. It might be useful to

know, that the pressure coming out of the valve unit (to be

measured at tap 7), corrisponds to the pressure regulated by

the stabilizer and is reduced in order to overcome the crossing

resistance of the principle valve (5). It should be pointed out,

that the valve crossing resistances depend on the opening of the

valve regulated by knob 3 through wjich the end - of - the - run

position is adjusted. To regulate the pressure stabilizer, conn-

ct a water manometer to the rubben tube holder installed on

tap (8) in correspondence to the stabilizer exit (Pa).

9) The holes of the pressure stabilizer bleed (11) should be free and

unblocked if it’s to function properly.

SUGGESTIONS FOR REGULATING THE GAS VALVE

1) Connect a water manometer to the pressure tap Pa (indicated

as n° 8) to measure the pressure coming out of he stabili-

zer.

2) Put the gas delivery regulators for ignition (2) and for maximum

delivery (3) in the positions presumed necessary for the delivery

desired. Also open adequately the combustion air regulator.

3) Turn on the burner.

4) With the burner on, manoeuvre the regulating screw (1) of the

stabilizer regulator of the gas pressure and regulator of the gas

pressure and regulate the pressure at the value considered ne-

cessary to obtain the output desired, when the maximum output

regulator (3) is in the maximum opening position. It should be

pointed out that, normally, the above conditions require about

40 ÷ 70 mm.W.C.

5) Put the ignition output regulator (2) in the position considered

necessary to obtain ignition with the minimum delivery possible.

1 / 15

0006081159_201102

BALTUR S.p.A.

Via Ferrarese 10 - 44042 CENTO (Ferrara) ITALIA

Tel. 051.684.37.11 Fax 051.685.75.27/28

(International Tel. ++39.051.684.37.11 - Fax ++39.051.683.06.86)

http://www.baltur.it - http://www.baltur.com - E-MAIL info@baltur.it

04/01/2010

Uygunluk Beyanı

Aşağıdaki ürünlerimizin

BPM...; BGN…; BT…; BTG…; BTL…; TBML...; Comist…;

GI…; GI…Mist; Minicomist…; PYR…; RiNOx…; Spark...;

Sparkgas...; TBG...;TBL...; TBML ...; TS…; IBR...; IB...;

(Varyant: … LX, düşük NOx emisyonları için)

Konut ve sanayi kullanımı için hava üemeli sıvı, gaz ve karma yakıtlı brülörler

aşağıdaki Avrupa Direktierinin minimum şartlarını karşılamaktadır:

90/396/CEE ...............................................(D.A.G.)

89/336/CEE - 2004/108/CE ........................(C.E.M.)

73/23/CEE – 2006/95/CE ...........................(D.B.T.)

2006/42/CEE .............................................(D.M.)

ve aşağıdaki Avrupa Standartlarına uygundur:

UNI EN 676:2008 (gaz ve kombinasyonu, gaz tarafı)

UNI EN 267:2002 (dizel ve kombinasyonu, dizel tarafı)

Bu ürünler bu nedenle aşağıdaki işaretle işaretlenmiştir:

0085

Dr. Riccardo Fava

Genel Müdür / CEO

Uyarı / not

Bilgiler

Tehlike / Dikkat

Indice analitico

BRÜLÖRLERİN TEKNİK ÖZELLİKLERİ VE TAM BOYUTLARI ...................................................................................................4

BRÜLÖRÜN KAZANA BAĞLANMASI VE GAZ HATTININ BAĞLANMASI .................................................................................6

ÇİFT YAKITLI BRÜLÖRÜ DEVREYE ALMAK İÇİN TALİMAT - ’E AİT HİDROLİK ŞEMASI - ELEKTRİK BAĞLANTILARI ..........8

BAKIM - DOĞAL GAZ İLE İLK ÇALIŞTIRMA VE YANMA AYARI - MOTORİN İLE İLK ÇALIŞTIRMA VE YANMA AYARI .............9

DUNGS MB-DLE-B01 model BİLEŞİK (monoblok) GAZ VALFI ...................................................................................................14

GAZ BRÜLÖRÜ KONTROL KUTULARI .......................................................................................................................................12

PROPAN (L.P.G.) KULLANIMINA AİT NOTLAR ...........................................................................................................................10

2 / 15

0006081159_201102

ÖNSÖZ

Bu uyarı notları sivil kullanım ve sıcak su üretimi için ısıtma sistemleri

bileşenlerinin sağlıklı kullanımını sağlamak amacı ile hazırlanmıştır. Bu

notlar, yeterli güvenirliliğe sahip donanımların, doğru olmayan ve hatalı

kurulumlar veya uygunsuz ve mantıksız kullanımlar sebebi ile zarara yol

açmasının önlenmesi amacı ile nasıl hareket edileceğini göstermektedir.

İlave olarak bu kılavuzdaki uyarı notları son kullanıcıların anlayabileceği bir

dilde teknik olarak hazırlanmış olup, emniyetle ilgili hususlardan kullanıcıların

bilgi sahibi olmasını hede er. Üretici, kurulum veya kullanım sırasında üretici

talimatlarına uyma konusundaki aksaklıklardan kaynaklanan hataların

sebep olduğu hasarlardan kontratlı olsun veya ekstra kontratlı olsun

sorumlu değildir.

GENEL UYARI NOTLARI

• Kullanım kılavuzu ürünün özel ve gereki parçasıdır ve mutlaka kullanıcıya

verilmesi gerekmektedir. Emniyetli kullanım, bakım ve kurulumla ilgili

önemli bilgiler içerdiğinden kılavuzdaki uyarıları dikkatlice okuyunuz.

Kılavuzu ihtiyacınız olduğunda bulabileceğiniz yerde muhafaza

ediniz.

• Malzemeler, geçerli standartlara ve üretici talimatına göre kali ye

teknisyenler tarafından kurulmalıdır. “Kali ye Teknikerler” demekle,

domestik ısıtma ve sıcak su üretimi sistem parçaları hakkında uzman

ve özellikle üretici tarafından yetkilendirilmiş kişiler kastedismektedir.

Hatalı kurulum insanlara, hayvanlara ve eşyalara zarar verebilir. Bu tür

zararlardan üretici sorumlu değildir.

• Ambalaj açıldığında bütün parçaların mevcut olduğunu ve hasarsız

olduğunu kontrol ediniz. Şüphede iseniz, malzemeler kullanmayın ve

satıcınıza geri gönderiniz. Ambalajlama malzemelerini ( tahta kafesli

sandık, plastik poşetler, köpükler, vb... ) çocukların ulaşabilecekleri

yerden uzak tutunuz. Bu malzemeler toplanarak, çevre kirliliği

oluşturmamaları için uygun bir yere atılmaları gerekir.

• Her hangi bir bakım veya temizleme işleminden önce ana elektrik

beslemesindeki sistem şalterini kullanarak cihazınızın elektriğini kesin

veya ilgili bütün cihazların elektriğini keserek kapatın.

• Eğer sistemde hata varsa veya cihazınız düzgün çalışmıyorsa, cihazınızı

kapatın, tamir etmeye çalışmayın veya malzemeye müdahale etmeyin.

Böyle durumlarda sadece yetkili servis ile irtibata geçiniz. Her hangi

bir malzeme tamiri orijinal yedek malzemeler kullanılarak Baltur yetkili

servisleri tarafından yapılmalıdır. Yukarıdaki durumlardaki hatalı

eylemler malzemenin güvenirliliğini tehlikeye atacaktır. Donanımın

doğru ve verimli çalışmasını sağlamak için yetkili servisler tarafından

kullanma talimatlarına uygun şekilde periyodik bakımlarının yapılması

gerekmektedir.

• Donanımlar başka bir kullanıcıya satılır veya gönderilirse veya sahibi

cihazı bırakır veya taşır ise; kullanma kılavuzlarının da daima cihazın

yanında olmasını sağlayınız. Böylece yeni sahibi ve/veya monte eden

kişi kılavuzdan yararlanabilir.

• Opsiyonel malzemeler veya (elektrik malzemesi dahil) kitler de dahil

olmak üzere cihazın bütün donanımı için sadece orijinal malzemeler

kullanılmalıdır.

BRÜLÖRLER

• Bu cihaz, sadece kazanlarda, sıcak su kazanları, fırınlar veya diğer

benzeri donanımlara bağlanarak ve atmosferik ajanlara (yağmur, toz gibi)

maruz kalmayan uygulamalar için kullanılmalıdır.Başka diğer kullanım

şekilleri uygun olmayan kullanımdır ve dolayısıyla tehlikelidir.

• Brülör, yürürlülükteki düzenlemelere göre ve her durumda düzgün

yanmanın sağlanabileceği yeterlilikte havalandırmanın olduğu uygun

mahallere kurulmalıdır.

• Tehlikeli toksit karışımlar ve patlayıcı gaz formları oluşabileceğinden,

brülörün veya kazanın kurulduğu kazan dairesinin havalandırma

açıklığının ve brülör hava emiş ızgarası açıklığının ebadını azaltmayın

ve kapatmayın.

• Brülörü bağlamadan önce, sistem beslemesi (elektrik, gaz, motorin, veya

başka yakıt) ile alakalı bilgileri üzerindeki etiketinden kontrol ediniz.

• Brülörün sıcak parçalarına dokunmayınız. Genelde aleve yakın

alanlardaki ve yakıt ön ısıtma sistemindeki bu parçalar, cihazın çalışması

esnasında ısınırlar ve brülör durduğunda da bir süre sıcak kalırlar.

• Brülör artık kullanılmayacak ise yetkili teknikerler tarafından aşağıdaki

işlemler kesinlikle yapılmalıdır;

a) Ana şalterden elektrik besleme kablosu sökülerek, elektrik beslemesinin

kesilmesi,

b) Yakıt beslemesini, kapama valfını kullanarak kapatılması ve valfın

açma kolunun sökülmesi,

c) Potansiyel tehlike oluşturabilecek parçaların emniyete alınması,

Özel uyarı notları

• Alev yanma odasında oluşacak şekilde brülörün ısı üretecine bağlantısının

emniyetle yapıldığını kontrol edin.

• Brülörü devreye almadan önce ve en az yılda bir yetkili teknikerler

tarafından test edilmesi gereken işlemler aşağıda bildirilmiştir;

a) Brülörün yakıt debisi ayarını, ısı jeneratörünün kapasitesine göre

ayarlanması.

b) En azından yürürlükteki düzenlemeler ile bildirilen minimum hava ayarı

değerinde brülörün yanma verimliliğini sağlamak amacıyla yanma havası

debisinin ayarlanması.

c) Hava kirliliğine yol açan NOx ve yanmamış gazların yürürlükteki

mevzuata göre müsaade edilen sınır değerlerini aşmadığının kontrolunun

yapılması.

d) Emniyet cihazlarının ve ayar cihazlarının düzgün çalıştığının kontrolünün

yapılması.

e) Yanma ürünleri tahliye edildiği kanalın durumunun kontrol edilmesi.

f) Ayar işlemleri yapıldıktan sonra ayar cihazlarının mekanik emniyet

kilitlemelerinin yapılması,

g) Brülör kullanma ve bakım kılavuzunun kazan dairesinde olduğunun

kontrolünün yapılması.

• Eğer brülör devamlı olarak arızaya geçip duruyorsa, her defasında

resetleme yapmayı denemeyiniz.En yakın yetkili servisi problemi çözmesiiçin

çağırınız.

• Yürürlükteki düzenlemelere göre ekipmanların çalıştırılması ve bakımının

sadece yetkili servisler tarafından yapılmalıdır.

BRÜLÖRÜN GÜVENLE KULLANILMASI İÇİN KULLANICIYA UYARI NOTLARI

Sayfa yükleniyor ...

BALTUR Minicomist 7 Kullanım kılavuzu

Marka: BALTUR

Model: Minicomist 7

Tip: Kullanım kılavuzu

Bu kılavuz için de uygundur

Minicomist 11

PDF İndir

rapor

Diğer dillerde

English: BALTUR Minicomist 7 User manual

BALTUR Minicomist 7 Kullanım kılavuzu

Bu kılavuz için de uygundur

BALTUR Minicomist 7 Kullanım kılavuzu

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