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In addition to the requirements of the building code, the installation of boilers shall conform to the ASME Code, the National Board Inspection Code, and the manufacturer's instructions. Operating instructions of a permanent type shall be attached to the boiler. Boilers shall have all controls set, adjusted and tested by the installer. The manufacturer's rating data and the nameplate shall be attached to the boiler.
Clearances shall be maintained around boilers, generators, heaters, tanks and related equipment and appliances so as to permit inspection, servicing, repair, replacement and visibility of all gauges. If boilers are installed or replaced, clearance shall be provided to allow access for inspection, maintenance and repair. Passageways around all sides of boilers shall have an unobstructed width of not less than 18 inches (457 mm), unless otherwise approved.
The following boilers shall have a minimum clearance of 7 feet (2134 mm) from the top of the boiler to the ceiling: High-pressure steam boilers that have a steam-generating capacity in excess of 5,000 pounds per hour (2268 kg/h), or a heating surface in excess of 1,000 square feet(93 m
2
), or an input in excess of 5,000,000 BTU/hr (1465 kW). The following boilers shall have a minimum clearance of 3 feet (914 mm) from the top of the boiler to the ceiling: (1) Steam-heating boilers and hot-water-heating boilers that exceed one of the following limits: 5,000,000 BTU/hr input (1465 kW); or 5,000 pounds of steam per hour (2268 kg/h) capacity or a heating surface in excess of 1,000 square-foot (93 m
2
); and (2) high-pressure steam boilers that do not exceed one of the following limits: 5,000,000 BTU/hr input (1465 kW); or 5,000 pounds of steam per hour (2268 kg/h) Capacity or heating surface in excess of a 1,000-square-foot (93 m
2
); and (3) all boilers with manholes on top of the boiler. The following boilers shall have a minimum clearance of 2 feet (610 mm) from the ceiling: package boilers, steam-heating boilers and hot-water-heating boilers which do not have manholes on top of the shell and which do not exceed any one of the limits of this section.
Equipment and appliances shall be set or mounted on a level base capable of supporting and distributing the weight contained thereon. Boilers, tanks, equipment and appliances shall be securely anchored to the structure. Equipment and appliances requiring vibration isolation shall be installed as designed by a registered design professional.
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