65. Installation ClearancesBefore installing, check for the following:Install in accordance with relevant building and mechanical codes, as well as any local, state ornational regulations, or in the absence of local and state codes, to the National Fuel Gas Code ANSIZ223.1/NFPA 54 – latest edition. In Canada, see NSCNGPIC for detailed requirements.ItemRequired ClearancesFrom Heater• Maintain the following clearance fromboth combustible and non-combustiblematerials.Check Illustration• If possible, leave 200mm (8") or more oneither side of the unit to facilitate inspection.• If possible, leave 600mm (24") or more infront of the unit to facilitate maintenanceand service if necessary.• If possible, leave 75mm (3") or more aboveand below the vent pipe to facilitate inspec-tion and repair if necessary.Securing of space forrepair/inspection600mm(24") ormore200mm(8") ormore200mm(8") ormore75mm (3") or more75mm (3") or more• If the unit will be installed in the vicinity of apermanent kitchen range or stove that hasthe possibility of generating steam thatcontains fats or oils, use a dividing plate orother measure to ensure that the unit is notexposed to air containing such impurities.* The dividing plate should be of noncombust-ible material of a width greater than thewater heater.Exhaust hoodRangeDividing plate WaterheaterCooking EquipmentWARNING[ For N-0631S, N-0531S ]300mm (12") or more(Indoor)900mm (36") or more(Outdoor)100mm (4") or more(Indoor)600mm (24") or more(Outdoor)50mm (2") or more (Indoor)150mm (6") or more (Outdoor)