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Issued in September 2021

Subject to tech. modifications 
to improve the product!

Gas

Technical Information • Installation Instructions 

MG3-ZM-LN

GB 

Summary of Contents for MG3-ZM-LN

Page 1: ...Issued in September 2021 Subject to tech modifications to improve the product Gas Technical Information Installation Instructions MG3 ZM LN GB...

Page 2: ...pin assignments 7 12 Electrical connection 8 13 Air flap positioning motor 9 14 Air pressure switch 9 15 Gas pressure monitor 10 16 Adjusting the ignition electrode 11 17 Adjusting the mixing head 11...

Page 3: ...fore installing the gas burner please check the scope of delivery Scope of delivery burner housing gas jacket with burner pipe mount ing kit documentation and gas train Gas installation and commission...

Page 4: ...repair the fitting of non genuine parts or where the equipment has been used for purposes for which it was not intend ed 4 Operating instructions The operating instructions together with this techni c...

Page 5: ...boiler using the four M10 fastening screws with washers and a size Allen key The air pressure switch for the gas train must be at the top Burner type Technical data MG3 ZM LN Burner output in kW 450 2...

Page 6: ...on the burner housing in the gas jacket hinge and secure it with a rod The burner is now in the service position Attach the ignition and ionisation cable to the igni tion and ionisation electrodes Car...

Page 7: ...nclosed separately SP_1 1029 ODWW 6HLWH 0 0 09 0 HDUE 8UVSU 63B VWURNRVFK DWXP DWXP UVHW W GXUFK RLOHU bQGHUXQJ HSU UVDW YRQ QHUWHFK PE UHQQHU XQG HL V VWHPH D 1DPH HLFKQ 1U GHQW 1U HVVHO XQGH QVFKOXV...

Page 8: ...s The supply cable to the burner must be of the flexi ble type To access the firing unit the cover must be brought to the service position To do this remove the secur ing screws 1 and fold the cover d...

Page 9: ...rners The motor is activated electron ically via the microprocessor controlled control box Do not open the air flap actuator while it is under voltage The internal optics would be destroyed No warrant...

Page 10: ...e GDW MIN must not be removed or with the gas pressure switch MIN and the gas pressure switch DK in this case the plug bridge GDW MIN must be replaced with the connection of the gas pressure switch MI...

Page 11: ...head The position of the mixing head is set depending on the output according to the tables on page 24 1 7 51 7 9 5 672 780 ELV 2EHUIOlFKH 1 62 867 b1 581 1 7 1 0 7 J 0D H RKQH 7ROHUDQ DQJDEHQDFK 1 62...

Page 12: ...must be measured during burner start up and maintenance or after a fault in dication in the control box Disconnect the plug of the ionisation cable and connect the ionisation measuring cable Perform m...

Page 13: ...HJHOXQJ H WHUQHU HXVWXQJVUHJOHU XIWGUXFNZlFKWHU QRLVDWLRQVIODPPHQI KOHU 45 1 45 21 3 ODPPHQZlFKWHU 45 45 89 ODPPHQI KOHU 45 UHQQVWRII lKOHU 3 1 3 1 3 1 3 7 3 3 PLQ 3 PD 3 3 3 Power supply Safety chain...

Page 14: ...in parametrisation mode Unlock in case of fault One menu level down Button Reduce value For navigating in curve setting information and service mode Button Increase value For navigating in curve setti...

Page 15: ...voltage gas pressure is built up and there is no demand for heat The firing managers are parametrized in the factory OFF UPr appears in the display during first start up Enter password Action button...

Page 16: ...the setting tables to preset the values Action button Display Description When the firing machine is programmed run is displayed i reset skips the next steps an continues at the section Start heat set...

Page 17: ...oad air flap Hold down button A and set the value with the or button Move to the next curve point Action button Display Description When heat demand is present Confirm with i reset button Burner start...

Page 18: ...button to confirm Ignition ON Valves ON Ignition OFF Flame in start position When transferring P1 to P2 for the first time CALC appears briefly The curve points P2 to P9 are calculated auto matically...

Page 19: ...Action button Display Description Check the high load setting via the gas flow at the gas meter or compare the nozzle pressure with the values stated in 24 Adjustment tables Hold down A button and use...

Page 20: ...fety time ignition transformer ON Ph42 First safety time ignition transformer OFF Ph44 Interval 1 Ph50 Second safety time Ph52 Interval 2 Ph60 Operation 1 stationary Ph62 Maximum time small load setti...

Page 21: ...loose loop with out kinking Burner start If the burner does not go into operation turn adjusting screw N or small flame slightly in the direction and repeat start KEV 1 KEV2 KEV DN65 VGD20 40 VGD20 5...

Page 22: ...pressure pF must be at least 0 3 mbar Large flame V setting Exhaust gas analysis values Change in direction if CO2 too low O2 too high Change in direction if CO2 too high O2 too low Small flame N sett...

Page 23: ...ospheric pressure B acc to Tab 989 mbar Gas pressure PG at gas meter 20 mbar Gas temperature G 16 C Boiler output Qn 220 kW Efficiency K assumed 92 Calorific value Hi n 10 4 kWh m3 Gas flow in standar...

Page 24: ...2 966 72 20 0 44 5 16 4 236 4 118 2 2200 1150 2024 1058 80 23 0 50 19 7 247 7 129 5 2300 1250 2116 1150 90 25 5 0 55 5 23 259 0 140 7 Natural gas E Hi n 10 4 kWh m3 Burner output MG3 ZM L LN 2 Stage 1...

Page 25: ...ide is leaking Check whether the pressure switch for the leak test is closed when gas pressure is applied Check wiring for short circuit 14 0 POC open Check whether valve NC contact is closed 1 POC cl...

Page 26: ...ble defective 95 3 Ignition trans former 4 Fuel valve 1 5 Fuel valve 2 6 Fuel valve 3 External supply NOC Check wiring 96 3 Ignition trans former 4 Fuel valve 1 5 Fuel valve 2 6 Fuel valve 3 Relay wel...

Page 27: ...just ments log Boiler type Gas fitting Measured values min max Date P0 start point P1 min load P9 max load Flue gas temperature C Carbon dioxide CO2 level O2 content CO level Flue mbar Nozzle pressure...

Page 28: ...28 32 01 09 21 Subject to alterations Exploded view drawing spare parts list 27 Exploded view drawing spare parts list...

Page 29: ...Motor 4 5 kW with fan wheel 47 90 26800 21 4 pole female connector green 37 90 20744 22 7 pole female connector black brown 37 90 20731 23 Socket CR PLSx 47 90 26713 24 Relay CR P230AC2 47 90 25199 2...

Page 30: ...bH Adjutantenkamp 18 in D 58675 Hemer declare under our responsibility that gas burner type MG3 is conform with the regulations of these directives MD2006 42 EG EMC2014 30 EU GAD 2016 426 EU LVD2014 3...

Page 31: ...Subject to alterations 01 09 21 31 32 Declaration of conformity...

Page 32: ...he drawings photos and technical descriptions placed at your disposal remain our property and may not be duplicated without our written permission given in advance Subject to alterations 29 Dimensions...

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