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Manafacture: Bosch File size: 696.38 kb File name: Language of manual:

Instructions for the installer 5.3 Regulation for natural gas The hob has been inspected for G20 (2H) natural gas at a pressure of 20 mbar. To allow the unit to work with this type of gas, perform the same operations described in paragraph “5.2 Regulation for LPG”, but choose the nozzles and regulate the primary air for natural gas, as shown in the following table and in paragraph “5.4 Regulation of primary air”. After the regulations have been carried out, restore the seals with sealing wax or equivalent material. Burner Rated heating capacity (kW) Natural gas – G20 20 mbar Nozzle diameter 1/100 mm Reduced flowrate (W) Auxiliary (1) 1.05 73 380 Semi-rapid (2) 1.65 92 380 Average rapid (3) 2.55 115 750 Large rapid (4) 3.1 126 800 Triple crown (5) 3.9 140 1400 Triple crown (6) 3.3 130 1400 internal (7) 0.8 67 380Double crown external (7) 3.3 130 900 5.4 Regulation of primary air Referred to distance “X” in mm. BURNER G20 20 mbar G30/G31 28/37 mbar Auxiliary (1) 1.5 1 Semi-rapid (2) 1.5 1.5 Average rapid (3) 1 1.5 Large rapid (4) 1.5 2.5 Triple crown (5) 2 3.5 Triple crown (6) 1 2.5 internal (7) 0.5 1.5Double crown external (7) 1 4 Instructions for the installer Instructions for the installer 6. FINAL OPERATIONS Having carried out the above adjustments, reassemble the appliance following, backwards, the instructions in paragraph “5.1 Removing the hob”. 6.1 Regulation of minimum for natural gas Replace the components on the burner and slide the knobs on the gas tap pins. Light the burner and set it at minimum position. Remove the knob and turn the regulation screw inside or next to the gas tap pin (depending on the model) until you get a suitable minimum flame. Replace the knob and check burner flame stability: (rapidly turning the knob from maximum to minimum position, the flame should not go out). 6.2 Regulation of minimum for LPG To regulate the minimum for LPG, completely tighten (clockwise) the screw inside or next to the gas tap pin (depending on the model). The diameters of the by-passes for each burner are given in table “5.2 Regulation for LPG”. After having regulated the device with gas other than the one tested, replace the label located on the guard with the one that corresponds to the new gas. The label is inside the bag that contains the nozzles provided. Instructions for the installer 6.3 Arrangement of burners on hob BURNERS 1 Auxiliary 2 Semi-rapid 3 Average rapid 4 Large rapid 5-6 Triple crown 7 Double crown 6.4 Lubrication of gas taps After a while, the gas tap may become hard to turn or lock. If this happens, it has to be cleaned inside and re-greased. This must be done by a qualified technician. Instructions for the user 7. USING THE HOB Make sure that the flame-baffle crowns, the caps and the grid have been assembled correctly. Grid A (supplied) should be used for "woks" (Chinese pots). Adapter B (supplied) is to be used for small vessels. 7.1 Ignition of the burners with safety device For each knob the corresponding burner is ...

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