Unigas IDEA Series Technical Manual Of Installation, Use And Maintenance Download Page 3

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WARNINGS

THIS MANUAL IS SUPPLIED AS AN INTEGRAL AND ESSENTIAL PART OF THE PRODUCT AND MUST BE DELIVERED TO THE
USER.

INFORMATION INCLUDED IN THIS SECTION ARE DEDICATED BOTH TO THE USER AND TO PERSONNEL FOLLOWING PRO-
DUCT INSTALLATION AND MAINTENANCE.

THE USER WILL FIND FURTHER INFORMATION ABOUT OPERATING AND USE RESTRICTIONS, IN THE SECOND SECTION
OF THIS MANUAL. WE HIGHLY RECOMMEND TO READ IT.

CAREFULLY KEEP THIS MANUAL FOR FUTURE REFERENCE.

1)

GENERAL INTRODUCTION

z

The equipment must be installed in compliance with the regulations
in force, following the manufacturer’s instructions, by qualified per-
sonnel.

z

Qualified personnel means those having technical knowledge in the
field of components for civil or industrial heating systems, sanitary
hot water generation and particularly service centres authorised by
the manufacturer.

z

Improper installation may cause injury to people and animals, or
damage to property, for which the manufacturer cannot be held lia-
ble.

z

Remove all packaging material and inspect the equipment for inte-
grity.

In case of any doubt, do not use the unit - contact the supplier.
The packaging materials (wooden crate, nails, fastening devices, plastic
bags, foamed polystyrene, etc), should not be left within the reach of chil-
dren, as they may prove harmful.

z

Before any cleaning or servicing operation, disconnect the unit from
the mains by turning the master switch OFF, and/or through the cut-
out devices that are provided.

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Make sure that inlet or exhaust grilles are unobstructed.

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In case of breakdown and/or defective unit operation, disconnect the
unit. Make no attempt to repair the unit or take any direct action.

Contact qualified personnel only.
Units shall be repaired exclusively by a servicing centre, duly authorised
by the manufacturer, with original spare parts.
Failure to comply with the above instructions is likely to impair the unit’s
safety.
To ensure equipment efficiency and proper operation, it is essential that
maintenance operations are performed by qualified personnel at regular
intervals, following the manufacturer’s instructions.

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When a decision is made to discontinue the use of the equipment,
those parts likely to constitute sources of danger shall be made har-
mless.

z

In case the equipment is to be sold or transferred to another user, or
in case the original user should move and leave the unit behind,
make sure that these instructions accompany the equipment at all
times so that they can be consulted by the new owner and/or the
installer.

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For all the units that have been modified or have options fitted then
original accessory equipment only shall be used.

z

This unit shall be employed exclusively for the use for which it is
meant. Any other use shall be considered as improper and, there-
fore, dangerous.

The manufacturer shall not be held liable, by agreement or otherwise, for
damages resulting from improper installation, use and failure to comply
with the instructions supplied by the manufacturer.

2)

SPECIAL INSTRUCTIONS FOR BURNERS

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The burner should be installed in a suitable room, with ventilation
openings complying with the requirements of the regulations in force,
and sufficient for good combustion.

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Only burners designed according to the regulations in force should
be used.

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This burner should be employed exclusively for the use for which it
was designed.

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Before connecting the burner, make sure that the unit rating is the
same as delivery mains (electricity, gas oil, or other fuel).

z

Observe caution with hot burner components. These are, usually,
near to the flame and the fuel pre-heating system, they become hot
during the unit operation and will remain hot for some time after the
burner has stopped.

When the decision is made to discontinue the use of the burner, the user

shall have qualified personnel carry out the following operations:
a

Remove the power supply by disconnecting the power cord from the
mains.

b) Disconnect the fuel supply by means of the hand-operated shut-off

valve and remove the control handwheels from their spindles.

Special warnings

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Make sure that the burner has, on installation, been firmly secured to
the appliance, so that the flame is generated inside the appliance
firebox.

z

Before the burner is started and, thereafter, at least once a year,
have qualified personnel perform the following operations:

a

set the burner fuel flow rate depending on the heat input of the
appliance;

b

set the flow rate of the combustion-supporting air to obtain a combu-
stion efficiency level at least equal to the lower level required by the
regulations in force;

c

check the unit operation for proper combustion, to avoid any harmful
or polluting unburnt gases in excess of the limits permitted by the
regulations in force;

d

make sure that control and safety devices are operating properly;

e

make sure that exhaust ducts intended to discharge the products of
combustion are operating properly;

f

on completion of setting and adjustment operations, make sure that
all mechanical locking devices of controls have been duly tightened;

g

make sure that a copy of the burner use and maintenance instruc-
tions is available in the boiler room.

z

In case of a burner shut-down, reser the control box by means of the
RESET pushbutton. If a second shut-down takes place, call the
Technical Service, 

without trying to RESET further

.

z

The unit shall be operated and serviced by qualified personnel only,
in compliance with the regulations in force.

3)

GENERAL INSTRUCTIONS DEPENDING ON FUEL USED 

3a)

ELECTRICAL CONNECTION

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For safety reasons the unit must be efficiently earthed and installed
as required by current safety regulations.

z

It is vital that all saftey requirements are met. In case of any doubt,
ask for an accurate inspection of electrics by qualified personnel,
since the manufacturer cannot be held liable for damages that may
be caused by failure to correctly earth the equipment.

z

Qualified personnel must inspect the system to make sure that it is
adequate to take the maximum power used by the equipment shown
on the equipment rating plate. In particular, make sure that the
system cable cross section is adequate for the power absorbed by
the unit.

z

No adaptors, multiple outlet sockets and/or extension cables are per-
mitted to connect the unit to the electric mains.

z

An omnipolar switch shall be provided for connection to mains, as
required by the current safety regulations.

z

The use of any power-operated component implies observance of a
few basic rules, for example:

-

do not touch the unit with wet or damp parts of the body and/or with

bare feet;

-

do not pull electric cables;

-

do not leave the equipment exposed to weather (rain, sun, etc.)

unless expressly required to do so;

-

do not allow children or inexperienced persons to use equipment;

z

The unit input cable shall not be replaced by the user.

In case of damage to the cable, switch off the unit and contact qualified
personnel to replace.
When the unit is out of use for some time the electric switch supplying all
the power-driven components in the system (i.e. pumps, burner, etc.)
should be switched off.

Summary of Contents for IDEA Series

Page 1: ...M039135CG Rev 6 07 2008 BURNERS BRUCIATORI BRULERS BRENNER QUEMADORES Idea Series Gas burners MANUAL OF INSTALLATION USE MAINTENANCE LG NG NGX70 LG NG90...

Page 2: ...s 18 Adjusting the air and gas flow rates 19 Startup Output 19 Adjusting procedure 19 Adjusting the combustion head 20 Adjustements for single stage burners 20 Double stage burners 21 Calibration of a...

Page 3: ...ins electricity gas oil or other fuel z Observe caution with hot burner components These are usually near to the flame and the fuel pre heating system they become hot during the unit operation and wil...

Page 4: ...f toxic or explosive mixtures DIRECTIVES AND STANDARDS Gas burners European directives Directive 90 396 CEE Gas Appliances Directive 2006 95 EC on low voltage Directive 2004 108 CEE on electromagnetic...

Page 5: ...raph Gas rate min max Stm3 h 3 2 7 4 4 2 9 Gas pressure min max mbar see Note 2 Power supply 230V 1N ac 50 Hz Total power consumption kW 0 40 Electric motor kW 0 10 Protection IP40 Approx weight kg 14...

Page 6: ...2 5 0 8 2 5 0 8 3 0 0 8 3 0 Gas pressure min max mbar see Note 2 Power supply 230V 1N ac 50 Hz Total power consumption kW 0 40 Electric motor kW 0 10 Protection IP40 Approx weight kg 14 Valves size Ga...

Page 7: ...h 1013 mbar absolute pressure 15 C temperature and are valid for G20 gas nett calorific value Hi 34 02 MJ Stm3 for L P G nett calorific value Hi 93 5 MJ Stm3 Note2 Maximum gas pressure 65mbar with Du...

Page 8: ...1 2 365 34 78 287 332 365 75 291 80 95 99 162 218 M8 155 86 138 110 285 330 118 163 168 14 438 299 78 5 NG70 L 1 2 443 34 156 287 410 365 75 291 80 95 99 162 218 M8 155 86 138 110 285 408 118 241 168...

Page 9: ...G H J K L M N O P Q R S T W X min max min max min max min max min max Blast tube Standard NGX70 393 76 299 304 14 291 80 98 99 145 218 M8 153 96 120 108 296 130 167 7 438 291 Extended NGX70 461 66 14...

Page 10: ...W BACK PRESSURE IN CCOMBUSTION CHAMBER mbar LG90 L TN kW LG90 L AB kW 1 0 5 0 0 5 1 1 5 2 2 5 3 20 30 40 50 60 70 80 1 0 5 0 0 5 1 1 5 2 2 5 3 10 20 30 40 50 60 70 80 1 0 5 0 0 5 1 1 5 2 2 5 3 30 40 5...

Page 11: ...as rate Stm3 h GAS PRESSURE mbar NG90 M TN Gas rate Stm3 h NG90 M AB Gas rate Stm3 h L P G Burners GAS PRESSURE mbar LG70 L TN Gas rate Stm3 h LG70 L AB Gas rate Stm3 h 1 0 5 0 0 5 1 1 5 2 2 5 3 35 45...

Page 12: ...burners GAS PRESSURE mbar NGX70 M TN Gas rate Stm3 h NGX70 M AB Gas rate Stm3 h 2 4 6 8 10 12 14 16 18 1 1 5 2 2 5 3 3 5 4 Rp 10 Rp 15 0 2 4 6 8 10 12 14 16 18 0 5 1 5 2 5 3 5 Rp 15 Rp 10 6 8 10 12 14...

Page 13: ...e 4 stud blolts D completely 9 seal the space between the blast tube and the refractory lining with appropriate insulating material ceramic fibre cord or refractory cement Matching the burner to the b...

Page 14: ...toff valve Once the train is installed connect the gas valves group plug Fig 3 Key a Heat output in kW b Lenght of the flame tube in meters c Flame tube firing intensity in MW m3 d Combustion chamber...

Page 15: ...hould be longer than 3 meters insert a sectioning relay following the attached electrical wiring diagram Burner power supply connector HIGH LOW flame connector Single stage burner connector Double sta...

Page 16: ...hree phase or 230V phase phase without a neutral as fas as the Siemens LME2 control box the RC Siemens RC466890660 filter must be inserted between terminal 2 and the earth terminal on the board Key C...

Page 17: ...ssure gauge Measuring the gas pressure in the combustion head In order to measure the pressure in the combustion head insert the pressure gauge probes one into the generator s pressure outlet Fig 4 2...

Page 18: ...models Double stage models Gas pressure in combustion head NG70 M Gas rate Stm3 h NGX70 M Gas rate Stm3 h Gas pressure in combustion head NG90 M Gas rate Stm3 h Gas pressure in combustion head LG70 L...

Page 19: ...the flow rate measuring it on the counter or if it was not possible verifying the combustion head pressure by means of a dif ferential pressure gauge as described on par Measuring the gas pressure in...

Page 20: ...sting in the plant follows the next procedure Adjustements for single stage burners 1 startup the burner by turning its main switch A to on if the burner locks LED B on in the control panel press the...

Page 21: ...rate anticlockwise rotation increases it Do not use a screwdriver on the screw VR Note the screw VSB must be removed only in case of replacemente of the coil 2 startup the burner by turning its main s...

Page 22: ...this correspondence table On this actuator the manual control of the air damper is not provided the setting of the cams is carried out working with a screwdriver on the VS screw placed internally to...

Page 23: ...roceed as follows z Be sure that the filter is clean z Remove the transparent plastic cap z While the burner is operating at the maximum output test the gas pressure on the pressure port of the minimu...

Page 24: ...E ELECTRICAL LEADS OPENING THE GENERATOR DOOR DISMANTLING OF PART OF THE BURNER NEVER OPEN OR DISMANTLE ANY COMPONENT OF THE MACHINE OPERATE ONLY THE MAIN SWITCH WHICH THROUGH ITS EASY ACCESSIBILITY A...

Page 25: ...ving the filter in the MULTIBLOC DUNGS MB DLE 405 412 z Check the filter at least once a year z Change the filter if the pressure difference between pressure connection 1 and 3 Fig 16 Fig 17 is p 10 m...

Page 26: ...he combustion head To remove the combustion head proceed as follows 1 remove the burner cover 2 unscrew the VT fixing screws 3 disconnect the ignition cable CA unscrew the fixing nuts D and shift the...

Page 27: ...an the value shown check the position of the detection electrode the electrical contacts and if necessary replace the detection electrode Seasonal stop To stop the burner in the seasonal stop proceed...

Page 28: ...S z z MAXIMUM GAS PRESSURE SWITCH DEFECTIVE IF PROVIDED z z THERMOSTATS PRESSURE SWITCHES DEFECTIVE z z z OVERLOAD TRIPPED INTERVENTION z AUXILIARIES FUSE INTERRUPTED z CONTROL BOX FAULTY z z z z z DE...

Page 29: ...13 VALVE GROUP DUNGS MBC 65 DLE Rp1 2 21903K2 VALVE GROUP DUNGS MB DLE405 Rp1 2 2190339 VALVE GROUP DUNGS MB DLE407 Rp3 4 2190340 GAS PROVING SYSTEM option 2191604 ACTUATOR double stage burners 248005...

Page 30: ...AD 7 1 FAIRLEAD 8 2 FLANGE 7 2 AIR DAMPER ASS Y 8 3 BUTTERFLY VALVE INDEX ASS Y 7 3 FAN WHEEL 8 4 INSPECTION GLASS 7 4 PRESSURE SWITCH 8 5 BUTTERFLY VALVE 7 5 MOTOR 8 6 COMBUSTION HEAD 7 6 AIR DAMPER...

Page 31: ...C I B UNIGAS M039135CG 31...

Page 32: ...orner operation lamp LGB LMG LME SIEMENS control box MA Burner power supply terminal board MV Fan motor N Neutral PA Air pressure switch PG Minimum gas pressure switch ST Thermostats or pressure switc...

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Page 35: ...rner in high flame indicator light LGB22 LMG22 LME22 SIEMENS control box MV Fan motor PA Air pressure switch PG Minimum gas pressure switch STA4 5B0 37 63N30L BERGER actuator ST Thermostats or pressur...

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Page 40: ...with the LME22 fan motor M will be started tw Waiting time During the waiting time air pressure monitor LP and flame relay FR are tested for correct contact positions t11 Programmed opening time for a...

Page 41: ...d time for air pressure signal t11 Programmed opening time for actuator SA t12 Programmed closing time for actuator SA SB R W GP AL M LP BV1 Z FS tw t1 t3n TSA t4 7 t10 EK2 12 10 3 7 4 6 1 8 t3 A B B...

Page 42: ...W Limit thermostat pressure switch Z Ignition transformer LME22 connection diagram NT PC control RESET EK FSV ION 1 2 3 M 4 BV1 5 7 Z 10 AL T 12 R W GP STB 9 7101 24 0606 pa 6 LP 8 EK 11 K1 K2 1 K3 K...

Page 43: ...r code table the device repeats the blinks for regular intervals During diagnostics the control outputs are deactivated the burner remains shut down external fault indication is deactivated fault stat...

Page 44: ...and data subject to change Errors and omissions excepted C I B UNIGAS S p A Via L Galvani 9 35011 Campodarsego PD ITALY Tel 39 049 9200944 Fax 39 049 9200945 9201269 web site www cibunigas it e mail...

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