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SYSTEMA S.p.A.3.10 Position of ignition and detection electrodesAIRTIGHT GAS-FIRED RADIANT TUBES INFRA3.11 Nozzle positionFig.13 Electrode positionFig.14 Nozzle positionRev. 18GB061022
AIRTIGHT GAS-FIRED RADIANT TUBES INFRA4 INSTALLATIONSYSTEMA S.p.A.4.1 Places of installation and safety distancesCombustible materials in store must be at a sufficient distance for the radiating pipe to prevent them from reaching dangeroustemperatures. Laboratory experiments have shown that combustible materials (with a surface of 0.5 m 2 ), placedat a distance of 1.5 metres from the module and parallel to it, never reach temperatures that could be considereddangerous. In particular cases, if it is impossible to respect these distances (for example motors of the carriages on abridge crane, electric cables, lamps, cabins) suitable steps must be taken to screen heat-susceptible materials from themodule heat radiation (see fig. 16).600mm (with normal hood)200mm (with RBT hood)(*)MINIMUM DISTANCES OF COMBUSTIBLE MATE-RIALS FROM THE HEAT RADIATING TUBE(wood, cardboard, plastic materials, pallets, etc.)ACCORDING TO:- STANDARD DIN 3372 part 6, par. 3.12- DVGW, G63/11, part 12/3.1.2In any case the distance must be such that the maximumsurface temperature of the materials does notexceed 85°C.The bearing elements must not be heated on large surfacesto over 50°C.(*)Combustible materialFloorFig. 15 Distance from combustible materialCoverageModulo radiante INFRAEletric motorInsulation (rock wool 3cm thick minimum)Protecyive plate (stainless steel, galvanisedplate, aluminium)must allow air passage for ventilating the motorBRIDGE CRANEFig. 16 Example of protection of the motor of a bridge crane23Rev. 18GB0610
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