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3102.8.1 Equipment Requirements
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The inflation system shall consist of one or more blowers and shall include provisions for automatic control to maintain the required inflation pressures. The system shall be so designed as to prevent overpressurization of the system.
In addition to the primary inflation system, in buildings larger than 1,500 square feet (140 m2) in area, an auxiliary inflation system shall be provided with sufficient capacity to maintain the inflation of the structure in case of primary system failure. The auxiliary inflation system shall operate automatically when there is a loss of internal pressure and when the primary blower system becomes inoperative.
Blower equipment shall meet all of the following requirements:
- Blowers shall be powered by continuous-rated motors at the maximum power required for any flow condition as required by the structural design.
- Blowers shall be provided with inlet screens, belt guards and other protective devices as required by the building official to provide protection from injury.
- Blowers shall be housed within a weather-protecting structure.
- Blowers shall be equipped with backdraft check dampers to minimize air loss when inoperative.
- Blower inlets shall be located to provide protection from air contamination. The location of inlets shall be approved.
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