Strebel ML 125 GT Technical Manual Download | Manualshive

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STREBEL

TECHNICAL MANUAL

ML GT

ML JB

LOW NOx

CONDENSING BOILERS

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Summary of Contents for ML 125 GT

Page 1: ...19 STREBEL TECHNICAL MANUAL ML GT ML JB LOW NOx CONDENSING BOILERS ...

Page 2: ... RE HANDING THE DOOR MOD 160 GT JB 350 GT 670 JB 11 4 9 BOILER FUEL and AIR SUPPLY 12 4 10 WIRING DIAGRAM 12 5 FITTING THE BOILER CASING 13 5 1 BOILER BODY INSULATION 13 5 2 BOILER CASING MOD 45 GT 125 GT 30 JB 125 JB 13 5 3 BOILER CASING MOD 160 GT JB 270 GT JB 14 5 4 BOILER COVERING MOD 350 GT JB 670 JB 15 6 STARTING 16 6 1 PRELIMINARY CHECKS 16 6 2 WATER TREATMENT 16 6 3 FILLING THE SYSTEM 16 7...

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Page 5: ...4 ML ML ML FUEL BOTH LPG AND NATURAL GAS ACCORDING TO THE SPECIFIED BURNER 3 TECHNICAL SPECIFICATIONS 3 1 ml 45 GT 350 GT MODEL 45 GT 125 GT ...

Page 6: ...5 MODEL 160 GT 350 GT SHOWN BELOW WITH DIMENSIONS ON THE NEXT PAGE ML ML Capillary bulb pockets ...

Page 7: ...6 ML ML ML BOTH NATURAL GAS AND LPG ACCORDING TO THE BURNER SPECIFIED 3 2 ML 30 JB 670 JB ...

Page 8: ...7 Capillary bulb pockets ...

Page 9: ...8 ML ML ...

Page 10: ... the rules used in designing flues Chimneys must in any case be dimensioned according to Standard UNI 9615 WARNING The flue gas temperatures produced by ML boilers are considerably lower than non condensing boilers and have therefore very high relative humidity For these reasons the chimney must be completely watertight stand corrosion attack by acid condensate and must be adequately insulated to ...

Page 11: ...cover The control thermostats TR1 TR2 have an operating range from 0 to 90 and can be set by the user by means of the front dial Safety limit thermostats TS has a fixed setting of 100 0 6 C and can be manually reset For correct installation refer to the boiler casing assembly instructions 4 6 STARTING Open the gas valve check if there is any gas leakage Switch on the burner heating pump and the co...

Page 12: ... DOOR OPENING RIGHT TO LEFT mod 160 GT JB 350 GT 670 JB If the door is to be opened to the opposite side proceed as folllows 1 Switch the outside nut or bush of one hinge with the opposite closure bush then at the hinge side fasten the cone to the door with the inside nut 2 Repeat the operation for the other hinge 3 For any adjustment needed adjust the specific hinge nuts ...

Page 13: ...on openings comply fully to applicable regulations i check that the gas pipes are not used as a ground earth for electrical devices If the boiler will not be used for some time close the fuel supply BURNER MOUNTING IMPORTANT Check that the spaces between the burner sleeve and the boiler door are filled with thermal insula tion Fig 3 A piece of ceramic fibre insulation rope is provided with the boi...

Page 14: ...l panel connection cables passing through the aperture for the wiring harness please refer to the control panel diagram and to the standard plugs connection kit Unwind the thermostat capillaries fit the control panel 3 to the side RH or LH fastening with the screw then insert the bulbs in the boiler pockets Hook the upper rear panel 4 to the sides Fasten the support bracket 5 to the frame base L p...

Page 15: ...harness please refer to the control panel diagram and to the standard plug connection kit Unwind the thermostat capillaries fit the control panel to the side fastening with the screw then insert the bulbs in the boiler pockets Fit the upper panels 4S and 4D Mount the panel 5 attach the support bracket 6 to the corner of the frame base position the panel 7D and then the panel 7S with plate attached...

Page 16: ...e existing opening for the wiring harness please refer to the control panel diagram and to the standard plugs connection kit Unwind the thermostat capillaries attach the control panel 3 to the side with a screw then insert the bulbs into the boiler pockets Mount the upper panels 4P 4D and 4S with screws and plug the holes with the caps Mount the panel 5 attach the support bracket 6 to the frame ba...

Page 17: ...ealed system equipment and the safety valve s are correctly positioned and operate Check the electrical system and that the thermostats are set and operate 6 2 WATER TREATMENT If the boiler is to be installed in an existing system where there could be these should be rectified or if the hardness of the water is greater than 10 F it will be necessary to use a strainer and a water softener for syste...

Page 18: ... that there is no air in the heating system check all AAV devises Periodically check the boiler pressure 7 5 MAINTENANCE AND CLEANING maintenance and cleaning can be carried out after closing the fuel supply and switching off the electrical supply As economic operation depends on the cleanliness of the heat exchanger surfaces and on burner adjustment have the burner settings checked by professiona...

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