Manual Instalare, Operare, Intretinere Arzator Gaz MHG_MBW_GZ2-GZ4_engl

7/27/2019 Manual Instalare, Operare, Intretinere Arzator Gaz MHG_MBW_GZ2-GZ4_engl

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List of contentsNorms and regulations.............. ................................................................. .................................................................. ...................... 4Exhaust system and effective heat demand .............................................................. ........................................................... ............... 4

Modern conception ........................................................... .......................................................... ...................................................... 4

Useful design...................................................... ............................................................... ............................................................ .... 4

Universal use ................................................................ ................................................................ ..................................................... 5

Two-stage Operation ................................................................. ............................................................. ........................................... 5

Easy Installation ....................................................... .......................................................... ................................................................ 6

Instructions for using the burner ........................................................ .............................................................. .................................. 6

Leak test.................. ................................................................ ................................................................ .......................................... 6

Rating of the gas ramps .............................................................. ............................................................ ........................................... 7

Gas compact ramp Rp 1 and Rp 1...................... ...................................................................... ................................................... 7

Gas compact ramp Rp 1 and Rp 2............................ ................................................................. .................................................. 8

Gas compact ramp DN 65 to DN 100........................... .................................................................... .................................................. 8

Gas ramps GZ 3 liquid gas .......................................................... ........................................................... ............................................ 8

Setting of the switches in the motor valve connection box............................................................ ...................................................... 8

Gasburner and Gas ramps assembly GZ 2 - GZ 4 .................................................................. ......................................................... ..... 9

Table of basic settings and dimensions GZ 2 - GZ 4... ...................................................................... ................................................... 9

Adjusting the burner.................... ................................................................. ............................................................... .................... 10

Position air guidance device GZ 3 and GZ 4.............. ..................................................................... ................................................... 11

Air inlet nozzle.................... ................................................................ ............................................................... .............................. 11

Settings ................................................................ ............................................................. .............................................................. 12

Spark electrode setting ........................................................... ................................................................ ......................................... 12

Installation position Multiblock........................... ................................................................. ............................................................. 12

Fault diagnosis... ............................................................ .............................................................. .................................................... 13

Fault diagnosis MMI 810......... ............................................................ ............................................................. ................................ 13

Fault diagnosis TMG 740-3 and TMG 740-2.... ...................................................................... ........................................................... 14

Troubleshooting ........................................................... ............................................................... .................................................... 15

Burner dimensions .......................................................... ............................................................. .................................................... 17

Connections ........................................................... ........................................................... .............................................................. 18

Boiler connections .......................................................... ............................................................. .................................................... 18

Electric supply diagram ....................................................... .................................................................... ......................................... 18

Assembly with silencer hood for GZ 3 and GZ 4 ................................................................... ........................................................... 18

Circuit diagramm GZ 2................................................... .............................................................. .................................................... 19

Circuit diagramm GZ 3.0............................................... ............................................................... .................................................... 20

Circuit diagramm GZ 3.1 - GZ 3.3 ...................................................... ................................................................. ............................. 21

Circuit diagramm GZ 4................................................... .............................................................. .................................................... 22

Maintenance and service....................................... ............................................................ ............................................................. .. 23

Guarantee ............................................................ ............................................................. ............................................................ .. 24

Spare parts ........................................................... ............................................................. .............................................................. 24

Manufacturer's certificate ......................................................... ............................................................. .......................................... 25

EC Declaration of Conformity .......................................................... ................................................................... ............................. 26


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Safety instructions Please observe!

Please comply with the assembly, operation and maintenance instructions for installing and adjust-ing the gas burner!

In Switzerland, the guidelines issued by PROCAL and those of the Vereinigung Kantonaler Feuerver-sicherungen, VKF (Association of Canton Fire Insurances) must be observed, in particular the fireguidelines "Thermal Heating Systems".

Please read this installation manually carefully before starting installation. We cannot assume anyliability or guarantee for damage caused by failure to comply with this installation manual!

Work which is not carried out properly can cause injury to persons or damage to property!

Work on the heating system yInstallation, commissioning, maintenance and servicing workmay only be carried out by an authorised firm of heating con-tractors.

When working on burner and boiler y switch off the heating system emergency switch and secure it toprevent it being switched on again.

y shut off the oil feed pipe and secure it to prevent it beingopened unintentionally.

This symbol refers to instructions which must be heeded for your own safety and that of other people, andto avoid damage to property.

This symbol refers to instructions which must be heeded for the gas burner to operate safety and function

correctly. It also draws attention to statutory regulations which need to be observed.


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Installation-Operation-Maintenance GZ 2 - GZ 4 / 100 - 1450 kW

4

Norms and regulations

The following standards and regulations are to be observedduring installation and operation of the burner.

HeizAnlVHeating system ordinance

FeuVoFiring ordinance of the German federal states

1. BImSchVFirst ordinance for implementation of the German Emission Pro-tection Law

VDI 2035Guidelines for preventing damage from corrosion and scaleformation in hot water heating installations

VDERegulations and special requirements issued by the energy util-ity companies

EN 303, part 1 and part 2Heating boilers with forced draft burners

EN 60335, part 1Safety of household and similar electrical appliances

DIN 4705Calculating the dimensions of chimneys

DIN 4751Hot water heating installations safety requirements

DIN 4755Oil firing installations construction, execution, safety require-ments

DIN EN 267Automatic forced draught burners for liquid fuels definitions,requirements, construction and testing

DIN 51603, part 1Fuel oils extra light

DIN 57116Electrical equipment of firing installations

Please comply with the valid regional building code.

Exhaust system and effective heat demand

Boiler, burner and exhaust system (chimney) constitute an oper-ating unit; account must be taken of low exhaust temperatureswhen reducing the output

For exhaust temperatures below 160C, the system must be de-signed so as to avoid damage from condensation.

The uncondensed (humid) flue gas volume is an important indi-cation of the size of the flue gas installations an chimneys re-quired.

It is advisable to install draft limiters (supplementary air sys-tems) to achieve stable combustion values under varying condi-tions and to reduce possible humidity in the chimney. Theseshould be installed in the chimney where possible, to avoid pos-sible noises in the flue pipe.

Modern conception

The gas burners in the GZ 2 - GZ 4 series are fully automatictwo-stage burners in monobloc design. They are suitable fornatural gas and liquefied gas according to DVGW paper G 260,designed according to DIN 4788, and tested according toDVGW and CE.

The burners are equipped with automatic gas firing units for in-

termittent operation as per DIN EN 298 or DIN 4788; automaticgas firing units for continuous operation on request.

The GZ 2 - GZ 4 gas burners are pressurised burners with veryhigh impeller pressing and a steep impeller characteristic line.Because of these features and the variable adjustment of the airadmission nozzle, these burners are appropriate for modernhigh-performance boilers with reversible flames as well as forolder natural draught boilers. The modern conception of thetwo-stage GZ 2 - GZ 4 burners with a maximum output rangeof 50:100% (GZ 2 - GZ 3) or 60:100% (GZ 4) guarantees idealgraduation of the two load-stages depending on operatingconditions.

Useful design

Diecasting light metal case, power-dependent burner pipe andhigh-performance mixing system, adjustable air admission noz-zle and air damper servomotor for two-stage operation, A.C.motor (GZ 2 - GZ 3.0) or threephase motor (GZ 3.1 - GZ 4), ig-nition transformer, fan impeller, gas compact ramp (GZ 2 - GZ3.0) or gas ramps assembly (GZ 3.1 - GZ 4), air pressure switch,automatic firing sequence control with infrared flame detector(GZ 2 - GZ 3) or ionisation flame control (GZ 4), internal plugconnections and plugs according to DIN 4791, mounting flangewith gasket and fastening screws.

Every burner is pre-tested.


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GZ 2 - GZ 4 / 100 - 1450 kW Installation-Operation-Maintenance

5

Universal use

The adjacent diagram depicts the approximate performancerange of the different burner sizes as a function of the resis-tance measured at the boiler's gas exit during operation. Thecurves show maximum values and correspond with the modelcertification according to DIN 4788.

The starting resistance of the boiler is of decisive importance tothe attainable burner performance.

Fig. 1: Performance diagram GZ 2



Two-stage Operation

The use of a modern, symmetrically designed high-performancemixing system in conjunction with precisely functioning adjust-ment at the compact gas ramps (GZ 2 - GZ 3.0) or at the gasramps assembly (GZ 3.1 -GZ 4) makes it possible to adjust out-put precisely to heating requirements, resulting in optimum en-ergy utilisation in both load stages with low-emission combus-tion.

Two-stage operation is controlled by the air damper servomotorwhich adjusts the air flow for the two load stages and switchesthe gas solenoids in the compact gas ramps (GZ 2 -GZ 3.0) orgas ramps assembly (GZ 3.1 - GZ 4) by adjustable cam control-lers.


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6

Easy Installation

The burner comes complete, including power dependentequipment, and every component is clearly designed so that aqualified heating engineer will have no problems with Installa-tion, starting, and servicing.

Screws and gaskets for the burner installation are included. Theburner is electrically connected by a 7-pole plug according toDIN 4791.

The burners are pre-tested and pre-set. The burner performanceis changed by adjusting the gas-flow throttle and the settings(dimension B and air damper position).

In Germany, the heating engineer has to consider the existingregulations of the DVGW (e.g. TRGI or TRF) and the local utilitycompanies.

General note as per DIN EN 676:This burner must be installedin compliance with the valid specifications and must only beoperated in well aired rooms. The instructions before installingand operating the burner must be observed.

The engineer must ensure that the heating room is suitably ven-tilated with an air exchange rate of at least 100 m/h. The gaspipes must be installed and connected by an authorised heatingengineer. The weight of the gas compact ramps or assemblymust be supported by a suitable bracket.

The length of pipe between the gas ramps and the gas burnermust not exceed max. 800 mm (for GZ 2 and max. 500 mm forGZ 3.0).

The VDE and EVU specifications must be observed when install-ing the electrical connections.

The burner must be connected with a flexible cable. Do not in-terchange the phase (live!) and neutral wires

As a result of the new master firing ordinance, some Germanstates stipulate the installation of thermally influenced gas stopvalves.

Fig. 4: Gas-Geblsebrenner GZ 3

Instructions for using the burner

The burners GZ 2 GZ 4 are basically suitable for use in com-mercially available heating boilers (intermittent operation) forheating residential buildings and for service water. Product de-velopment and the test procedures have been geared to theoperating conditions of these systems.

The areas of application listed below make particularrequirements with special operating conditions for

the burner, so that MHG Heiztechnik reserves the right to is-sue explicit approval in these cases:

y dark radiatorsy

baking ovensy annealing furnacesy drying chambersy industrial applications

MHG Heiztechnik should also be consulted for instal-lations with above average firing chamber or tem-

perature loads.

In the case of rooms where the air must be expectedto be contaminated by halogenated hydrocarbons,

e.g. hairdressers, printers, chemical dry cleaners, laborato-ries etc., the burners must only be operated if suitablemeasures are taken to ensure that there is an adequate sup-

ply of uncontaminated combustion air.

Always consult MHG Heiztechnik if in any doubt.

The burners must not be operated in rooms with highdust levels or high humidity (e.g. laundries). The heat-

ing room must be protected from frost and well aired.

Failure to comply with these instructions renders thewarranty null and void for any damage resulting from

one of these causes.

Leak test

A programme-controlled leak detector which checks the sole-noids for leaks can be installed simply and retroactively. An ad-ditional electrical connection at gas compact ramps is not nec-essary. The leak lest provides additional security for the users ofgas firing systems. This feature is generally recommended, andis a stipulated-requirement for burner outputs of 1200 kW andmore.


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7

Rating of the gas ramps

Depending on the available gas flow pressure, a correspond-ingly rated gas compact ramps or gas ramp system will be in-stalled in the factory.

If the minimum connection pressure is not achieved under ratedheat load, a gas ramp system will have to be used with a largerrated width; the gas pressure must be increased at the utilitycompany's gas transfer point, or the cross section of the supplyline between the gas transfer point and the gas ramp systemmust be enlarged.

Before the gas fan burner starts up for the first time,vent the gas pipe and then check the gas ramps forleaks.

Gas compact ramp Rp 1 and Rp 1

Burner and gas ramps taken from the table on page 9 form acomplete unit , which has been subject to model certification.

The conventional arrangement of the gas ramps is designed asan operational compact unit.

Dirt pan with sieve and filter mat

Pressure controller with admission pressure compensationand zero closing

Pressure detector, setting range 2.5 - 50 mbar, blocked whenliquefied gas is used

Safety solenoid, opens and shuts quickly

Two-stage solenoid, opens slowly, shuts quickly, adjustablestarting volume, stage 1 and 2

Mounting flanges with measurement nipple

Electrical connection with plug

Supply-pressure up to max. 360 mbar{Comply with the Technical Rules for Gas Installations (DVGW-TRGI) }

Fig. 5:


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8

Gas compact ramp Rp 1 and Rp 2

Burner and gas ramps taken from the table on page 9 form acomplete unit which has been subject to model certification.

Key parts are:

Dirt pan with sieve and filter mat

Safety solenoid, opens and shuts quickly, with setting for gasvolume stage 2

Solenoid with setting for starting volume and gas volumestage 1 , opens slowly and shuts quickly


Pressure detector, setting range 2.5 - 50 mbar Electrical connection with plug

Supply-pressure up to max. 360 mbar

Gas compact ramp DN 65 to DN 100

Burner and gas ramps taken from the table on page 9 form acomplete unit which has been subject to model certification.

Fig. 6:

Key parts are:

Dirt pan with sieve and filter mat Safety solenoid, opens and shuts quickly, with setting for gas

volume stage 2

Motor valve with setting for gas volume stage 2, opens slowlyand shuts quickly


Pressure detector, setting range 2.5 - 50 mbar

Electrical connection with plug

Supply-pressure up to max. 200 mbar

Gas ramps GZ 3 liquid gas

Pre-adjustment

TypeGas solenoid level 1

(partial quantity)Gas solenoid level 2

(main quantity)

GZ 3.0 opened approx. turn opened approx. turn

GZ 3.1opened approx. 2turn

opened approx. 1turn

GZ 3.2opened approx. 1turn

opened approx. 1turn

GZ 3.3opened approx. 1

turn

opened approx. 1

turn

- Set pressure switch to approx. 20 mbar- Open start gas quantity 1 turnIt is vital for the stated basic settings (see page 9) tobe met for liquid gas operation!

Setting of the switches in the motor valve connec-tion box

Fig. 7:


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9

Gas-burner and gas ramps assembly GZ 2 - GZ 4

Burner-type

Gas typeBurnerorder

number

Suitable for boilerperformance

kW

Gas flowpressure

mbar

Rated with 2)DN

Ordernumber

Total weightkg

GZ 2.1Natural gas H (L,LL)

3)

Liquefied gas-1001-1008

100 - 2002826


3)


180 - 3002826

GZ 3.0 Natural gas H (L,LL)

3)

Liquefied gas -30852)

260 - 315 2050 Rp 11) 50


3)

Liquefied gas-3175

2)

315 - 50025-50

50Rp 1 -3044 67


3)

Liquefied gas-3275

2)

450 - 65025-50

50Rp 2 -3054 73


3)

Liquefied gas-3305

2)

550 - 81025-50

50Rp 2 -3054 74


3)


700 - 102035-50

50DN 65 -4065 173


3)


900 -145025-50

50DN 80 -4080 201

1) included in burner order number2) It is vital for the stated basic settings (see page 8) to be met for liquid gas operation!

Table of basic settings and dimensions GZ 2 - GZ 4

Gas flow rate Air pressure Nozzle pressureBurner-

typeGas type

Suitable for boilerperformance

kWStage 1m3 /h

Stage 2m3 /h

Dim.A

mm

Dim.B

mm

Dim.D

mmStage 1mbar

Stage 2mbar

Stage 1mbar

Stage 2mbar

Airsupplynozzle

GZ 2.1 Natural gas H (L,LL)3)

Liquefied gas100 - 200 10

414

5,518 50

5795 2

378

613

1016

9,57,5


3)

Liquefied gas180 - 300

166

239

18 70 110 2,557

511

920

9,5


3)


197,6

3213,8

236575

1103,41,2

7,27

5,52,2

11,710

0


3)


269,5

43,515

2025

88135

130126

3,52

11,56

4,83,5

129

7,51,5


3)


3914

6525

2027

118120

1455,51,5

11,59

4,22,5

119,5

7,52,5


3)


5316

7528

27117120

1453,5

29

1063

1311,5

83,5

GZ 4.1Natural gas H (L,LL) 3)


58

24,8

91

33,1

33125

130

1759

13,5

17

18,5

6,5

12

14

16,5

2

1,5GZ 4.2

Natural gas H (L,LL) 3)Liquefied gas

900 -145085

27,9125

46,533

130141

17510,5

7,517,5

175

911

21,5

3) For operation with natural gas (L, LL), only the gas quantity is increased. The output-related basic setting does not have to be changed. Power reduc-tion for natural gas (L) approx. 15%, for natural gas (LL) approx. 30%


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10

Adjusting the burner

Every burner is pre-tested and pre-set. The basic adjustment isshown in the table above (reference values valid for the gastype indicated).

The burner must be adjusted and started by a qualified heatingengineer.

Adjusting the gas flow range:

gas pressure (nozzle pressure): at the adjusting screw of thegas pressure controller 2

increased gas pressure

decreased gas pressure

gas volume stage 2 - at the adjustment for valve 3

less gas

more gas

gas volume stage 1 - at the adjusting wheel of solenoid stage1 4

less gas

more gas

for gas ramp systems DN 65/80/ 100 at the motor valve 4(Johnson Controls see illustration on the left)

starting gas volume - at the adjusting screw of valve 1 1

opening quickly

opening slowly

The gas pressure detector is to be set to the flow pressure atwhich perfect function of the gas burner is still possible.

There are three possible ways of adjusting the combustion air:

a. by adjusting the air supply nozzle according to burner out-put and local conditions:

position 0 - 5 (0 -1) for natural draught boilers

position 6 - 9.5 (2 - 4) for counter-pressure boilers

b. by adjusting the baffle plate in the burner tube (see fablewith basic settings); this adjusts the air velocity in thecombustion head together with the flame shape to thecombustion chamber conditions

c. by adjusting the air damper for the 1st and 2nd stage us-ing the (blue) cam controller for stage 1 and (orange) forstage 2; the air volume is reduced to the left and increasedto the right. An inadequate air volume in stage 1 is ad-

justed as follows:

adjust the (blue) cam controller up-wards (more air)

briefly switch over to stage 2 at boiler thermostat 2. Afterswitching back, the servomotor turns back into the requiredposition.

When the air volume is too large in stage 1 or too small in stage2, the corresponding cam controller must be adjusted. To re-duce an excessive air volume, the (orange) cam controller mustbe adjusted accordingly and the servomotor is closed by switch-ing the controller for the second stage or by disconnecting thegreen 4-pole plug, then start up again in the operation setting.

The switching point for the second solenoid (stage 2) or motorvalve can be changed using the long black cam controller.When switching the burner off for regular servicing or to elimi-nate faults, the air damper can be closed using the (short black)cam controller of the servomotor. It is advisable to measure theair pressure before the baffle plate to check the setting (see ta-ble values for air pressure). The measuring point is located nextto the gas supply pipe on the flange cover.

Fig. 8:


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11

Position air guidance device GZ 3 and GZ 4

Fig. 9:

Air inlet nozzle

Fig. 10: Adjusting the air inlet nozzle for GZ 2 / GZ 3

The air inlet nozzle can be adjusted once the burner has beenopened. Both screws on the air inlet nozzle should be loosenedslightly, and must be screwed tight again after the adjustmenthas been made.

Fig. 11: Adjusting the air inlet nozzle for GZ 4

The air inlet nozzle can be adjusted once the burner has beenswitched off and the suction silencer has been hinged away.Both screws of the air inlet nozzle should be loosened slightly,and must be screwed tight again after the adjustment has been

made.


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12

Settings

Fig. 12:

Spark electrode setting

Fig. 13:

Installation position Multiblock

All gas Multiblocks must only be installed as shownbelow

Installation in the grey area is not permitted.

Fig. 14:

GZ 4 liquefied gas

GZ 4 natural gas

GZ 2

GZ 3


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13

Fault diagnosis

Flame monitoring makes use of the conductivity and rectifiereffect of the flame, by means of an ionisation electrode.

The flame signal amplifier only reacts to the DC componentof the flame signal.

A short circuit between ionisation electrode and earthcauses a fault cutout.

MMI 810.1mains voltageUN = AC 230 V

necessary sensor current for reliable

operation> 5 A

Fig. 15: Legend measuring circuit

FE Ionisation electrodeM Multimeter

Fig. 16: Position ionisation electrode GZ 2

Ionisation current in operation: GZ 2: 15 - 22 A

Fault diagnosis MMI 810

Fault Remedy

Burner does not start,program display re-mains the same

Faulty electric lead

Thermostat or gas switch"OFF""

Burner does not start,program display turnsconstantly

Air pressure switch not in idleposition (working contact mustbe open)

Connection terminal 1terminal9 interrupted

Operating voltage < 180V

Automatic unit shows afault just after startingpre-venting (line inblue box)

Air pressure switch contact doesnot close

No load at terminal 5

Flame signal

Automatic unit shows afault during pre-venting (blue area)

Air pressure switch contactopens

Flame signal

Automatic unit shows afault during the safetyperiod (yellow area)

No flame formed (faulty ignition,valve does not open, etc.)

No or weak flame signal (flamedoes not hold, poor insulation offlame sensor, burner not cor-rectly connected to earth con-ductor)

Automatic unit shows afault during operationsetting (red or greenarea)

Flame breaks off


Flame signal too weak


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14

Fault diagnosis TMG 740-3 and TMG 740-2

Fault Remedy

Burner does not start,program display re-mains the same


Thermostat or gas switch"OFF""

Burner does not start,program display turnsconstantly

Air pressure switch defect or notin idle position (working contactmust be open)

Automatic unit shows afault just after startingpre-venting (line inblue box)

Air pressure switch contact doesnot close

Flame signal

Automatic unit shows afault during pre-venting (blue area)


Flame signal

Automatic unit shows a

fault during the safetyperiod (yellow area)

No flame formed (faulty ignition,

valve does not open, etc.)

No or weak flame signal (flamedoes not hold, poor insulation offlame sensor, burner not cor-rectly connected to earth con-ductor)

Automatic unit shows afault during operationsetting (red or greenarea)

Flame breaks off

Air pressure switch contact o-pens

Flame signal too weak


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15

Troubleshooting

Check general operating status. Are the stated values met?

Strung Ursache Behebung

Burner does not work Check main switch, fuse, boiler thermostat

Check voltage (neutral and live wires)

Check leak detector

Check gas pre-pressureCheck gas pressure detector (setting, function)

Replace firing sequence controller

Burner StartsGas pressure and gas shownNo ignition spark

Check ignition transformer, ignition cable andspark electrode setting


Burner worksGas pressure shownSpark visible

No flame

Air in the gas pipe

Flame detector could be exposed to another

source of light

Burner worksGas pressure shownSpark visibleFlame OKNo ionisation current(GZ 2 + GZ 4)No infrared display (GZ 3)Fault cutout

Check connection of neutral and live wires

Check gas flow pressure (fluctuating pressuregauge display = gas pipe too small or pressurecontroller defect

Set infrared flicker detector (IRD) (GZ 2 + GZ 4)to 7, check IRD's Position, replace IRD (GZ 3)


Burner does not start up,program display stays thesame


Thermostat or gas pressure switch off

Check electric leads

Replace thermostat or gas pressure switch

Burner does not start up,program display turns con-stantly

Air pressure switch defect or not in idle position(contact must be open)

Replace air pressure switch

Burner starts up, automaticunit shows fault just afterstarting pre-venting

Air pressure switch contact does not close Check wiring for air pressure switch

Replace air pressure switch


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16

Fault Cause Remedy

Burner starts up,automatic device shows faultduring pre-venting

Air pressure switch contact opens

Flame signal

Check pulse lead

Check ionisation current [fault current?](GZ 2 + GZ 4)check infrared flicker detector IRD (GZ 3)

Burner starts up,automatic device shows faultduring safety period

No flame formed (lacking ignition, valve doesnot open, etc.)

No or weak ionisation current(GZ 2 + GZ 4)No or weak flame signal (GZ 3)[Flame does not hold, poor insulation of flame

sensor, burner not correctly connected to earthconductor]

Check pulse lead


Burner starts up,automatic device shows faultduring operation setting

Flame breaks off

Air pressure switch contact opens

Ionisation current too low (GZ 2 + GZ 4)Flame signal too low (GZ 3)

Check pulse lead


Safety warning!The mains voltage must be switched off

and the main stop valve in the gas pipe closed

whenever any kind of work is being performedto the burner and switchboard


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17

Burner dimensions

Fig. 17:

Burnertype

Type of gasGas ramp

system

Dim.L1

approx.

Dim.L2

approx.

Dim.L3

approx.

Dim.L4

Dim.L5

approx.

Dim.D1

Dim.D2

Dim.H1

Dim.H2

Dim.H3

Dim.B

GZ 2.1 Natural gas Rp 1 150 230 240 80 570 115 115 240 355 295 305

GZ 2.1 Liquefied gas Rp 1 150 230 240 80 570 115 115 240 355 295 305GZ 2.2 Natural gas Rp 1 180 230 240 80 600 115 130 240 355 295 305

GZ 2.2 Liquefied gas Rp 1 180 230 240 80 600 115 130 240 355 295 305

GZ 3.0 Natural gas Rp 1 200 350 260 130 830 140 140 350 490 380 375

GZ 3.1 Natural gas Rp 1 265 350 525 130 850 140 175 320 490 380 386

GZ 3.1 Natural gas Rp 2 265 350 570 130 850 140 175 320 490 380 386

GZ 3.2 Natural gas Rp 2 270 350 570 130 850 152 200 320 490 380 386

GZ 3.3 Natural gas Rp 2 270 470 570 130 970 152 200 320 490 380 386

GZ 3.3 Natural gas DN 65 270 470 1580 180 970 152 200 370 490 380 386

GZ 4.1 Natural gas Rp 2 430 590 1230 210 1380 186 230 285 650 515 470

GZ 4.1 Natural gas DN 65 430 590 1650 210 1380 186 230 285 650 515 470

GZ 4.1 Natural gas DN 80 430 590 2150 210 1380 186 230 285 650 515 470GZ 4.2 Natural gas DN 65 430 590 1650 210 1380 186 280 285 650 515 470

GZ 4.2 Natural gas DN 80 430 590 2150 210 1380 186 280 285 650 515 470

GZ 2.1 - GZ 3.3

GZ 4.1 - GZ 4.2


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18

Connections

Burnertype

Motor voltageMotoroutput

Connected wattage

GZ 2 230 V WS 50 Hz 0,25 kW 0,37 kW, ca. 2 A

GZ 3.0 230 V WS 50 Hz 0,45 kW 0,7 kW, ca. 3,2 A

GZ 3.1 400 V DS 50 Hz 1,1 kW 1,4 kW, ca. 3 A

GZ 3.2 400 V DS 50 Hz 1,1 kW 1,4 kW, ca. 3 A

GZ 3.3 400 V DS 50 Hz 1,1 kW 1,4 kW, ca. 3 A

GZ 4 400 V DS 50 Hz 3,0 kW 3,3 kW, ca. 6 A

Boiler connections

Electric supply diagram

Assembly with silencer hood for GZ 3and GZ 4

When a silencer hood is fitted, the pipe double nipple may haveto be lengthened to a size of 200 mm.

The pipe length between gas ramps and burnershould be as short possible. For gas burners GZ 3 and

GZ 4, the max. pipe length is 800 mm. A bracket is requiredto take the weight of the gas ramps.

The dimension H must be checked before erecting boilers with-

out boiler foundations.

Fig. 18: Assembly with silencer hood for GZ 3 and GZ 4

Type D1 D2 M

GZ 2.1 130 160 180 8/10

GZ 2.2 140 160 180 8/10

GZ 3.0/1 150 180 205 10

GZ 3.2/3 162 220 240 10

GZ 4 195 246 276 12


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Circuit diagramm GZ 2

Fig. 19:

Item

b2

b3

b4

b5

b6

b8

IS k1

m1

m2

m3

s1 s2 u1

u2

Indication

On-off-Switch

Safety

thermostat

On-off-thermostat

On-off-thermostat

Gaspressureswitch

Airpre

ssureswitch

Ionization

Conde

nser

Motor

withcondenser

Ignitiontransformer

Servom

otor

Soleno

idvalve,

two-stage

(stage

1and2)

Safety

solenoidvalve

Gasburnerautomaticsafety

Leakagetester

ObservelocalandVDE-regulations.

Conne

ctionstoearthpotentialbeing

executedcarefully.

Alsowhenusingtheleakcheck

Caution:

dono

tconfusephaseandMp.

Multibloc

Working hours 2

Working hours 1

Failure


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Circuit diagramm GZ 3.0

Item

b2

b3

b4

b5

b6

b8

IS k1

m1

m2

m3

s1 s2 u1

u2

Indication

On-off-Switch

Safety

thermostat

On-off-thermostat

On-off-thermostat

Gaspressureswitch

Airpre

ssureswitch

Infra-redflickerdetector

Conde

nser

Motor

withcondenser

Ignitio

ntransformer

Servom

otor

Soleno

idvalve,

two-stage

(stage

1and2)

Safety

solenoidvalve


contro

l

Leakagetester


Conne

ctionstoearthpotentialbeing

executedcarefully.

Fig. 20:

Also when using the leak check Caution:do not confuse phase and Mp.

Multibloc

Workinghours2

W

orkinghours1

Failure


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Circuit diagramm GZ 3.1 - GZ 3.3

Fig. 21:

1)ConnectorasperDIN4791

LK=lusterterminalinthe

baseoftheautomaticgasfir-

ingdevice

Gasrampblockorline

withseparateparts(with-

outconnector)

Working hours 2

Working hours 1

Failure

Item

b2

b3

b4

b5

b6

b8

c1 e2IS m

1m2

m3

s1 s2 u1

u2

Indication

On-off-Switch

Safetythermostat

On-off-thermostat

On-off-thermostat

Gaspressureswitch

Airpressureswitch

Motorcontactor

Bimetallicrelais

Infra-redflickerdetector

Motorwithcondenser

Ignitiontransformer

Servomotor

Solenoidvalve,

two-stage

(stage1and2)

Safetysolenoidvalve


control

Leakagetester


Connectionstoearthpotentialbe-

ing

executedcarefully.


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Circuit diagramm GZ 4

Fig. 22:

Observelocaland

VDE-

regulations.

*Partstobesupp

lied

onsite

Principlecircuit

Connectorasper

DIN

Enginevalve

Working hours 2

Working hours 1

Failure

Whenusing

theleak

check

Item

b2*

b3*

b4*

b5*

b6

b8

c1 e1*

e2

IS m1

m2

m3

s1 s2 u1

u2

Indication

On-off-Switch

Safetythermostat

On-off-thermostat1

On-off-thermostat2

Gaspressureswitch

Airpressureswitch

Motorcontactor

Motorsicherung

Bimetallicrelais

Ionisationelectrode

Motor

Ignitiontransformer

Servomotor

Solenoidvalve

Enginevalve


Leakagetester

Sensorselectionswitchto

"

"


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23

Maintenance and service

Many European laws require that combustion heating systemshave to be checked once a year by a qualified heating engineer.The burner should be thoroughly checked and cleaned (tan im-peller, mixing system, ignition system). The gas filter should bere-placed as required and the assembly of the air damper axleoiled in GZ 4 (see Fig. 25).

For maintenance, the burner is removed from its housing byturning the four quick release screws and disconnecting the gascompact ramps or the gas ramps system, then hanging it in oneof the service positions (GZ 2 - GZ 3).

In GZ 4, the nozzle system can be removed separately after dis-connecting the ignition cable plug and the ionisation cable andafter unscrewing the flange cover screws.

Before removing the nozzle system, care must be taken to en-sure that the servomotor has returned to the closed position.

Fig. 23: Burner in service Position

Fig. 24: Heating room dimensions for GZ 4

Fig. 25: Air damper assembly GZ 4


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Guarantee

MHG gas burners should work perfectly after beings installedand started by a qualified heating engineer, and when used forcombustion of the gas types stipulated in DVGW paper G 250certified for the particular gas burners.

The guarantee period lasts for 24 months after first start-up andnot more than 27 months after the date of dispatch. Pleaseconsult the burner documents for details.

For details please consult the burner card.

Spare parts

When replacing parts, only use original spare parts fromMHG. Some components are specially designed and manu-factured for MHG burners.

When ordering spare parts, please always state the burnernumber.

All dimensions in mm.Technical details and components subject to change withoutprior notice.


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GZ 2 - GZ 4 / 100 - 1450 kW Your notes

25

Manufacturer's certificateas per 7 (2) 1. BImSchV (First ordinance for implementation

of the German Emission Protection Law) Hamburg, 14.10.2005MHG Heiztechnik GmbH herewith certifies for the gas burners stated below

Product Gas burnerTrade name Forced draught burnerType / design no GZ 2.1 - 2.2 / CE-0085AQ0916

GZ 3.0 - 3.3 / CE-0085AQ0916GZ 4.1 - 4.2 / CE-0085AQ0916Test standards DIN EN 676Testing agency Gaswrme Institut (GWI) EssenQuality management system DIN EN ISO 9001Certified by Germanischer Lloyd (GLC)

that these products fulfil the requirements of the stated directives and standards, and correspond to the design tested by theabove stated testing agency. However, this declaration does not constitute a warranty of any qualities

In addition, this burner remains below the tolerable value of

max. 120 mg/kWh for nitrogen oxide.

stipulated in the ordinance text of 7 (2) 1. BImSchV (First ordinance for implementation of the German Emission ProtectionLaw).

The oil burners designed above are intended only for the installation in boilers which have also been certified to the corre-sponding directives and standards.

The contractor assembling the system shall guarantee that all regulations relating to the interaction of oil burner and boilerhave been observed.

MHG Heiztechnik GmbH

Niedermayer i. V. Gieseler


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EC Declaration of Conformity Hamburg, 14.10.2005

MHG Heiztechnik GmbH herewith certifies that the forced draught gas burners stated below:

Product Gas burnerTrade name Forced draught burnerType GZ 2, GZ 3, GZ 4

correspond to the type/design described in the EU type/design test certificate

They comply with the valid requirements of gas appliance directive 90/396 EEC dated 29.06.1990.

MHG Heiztechnik GmbH

Niedermayer i. V. Gieseler

Zertifiziert nachISO 9001

Germanischer Lloyd

Certification


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GZ 2 - GZ 4 / 100 - 1450 kW Your notes

27


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Manual Instalare, Operare, Intretinere Arzator Gaz MHG_MBW_GZ2-GZ4_engl

Documents

Transcript of Manual Instalare, Operare, Intretinere Arzator Gaz MHG_MBW_GZ2-GZ4_engl