// CODE SNIPPET
[F] 421.3.1 Pressure Control
Related Code Sections
421.3.1 Special Detailed Requirements Based on Occupancy and Use, Pressure Control
Hydrogen fuel gas rooms shall be provided with a ventilation system designed to maintain the room at a negative pressure in relation to surrounding ...
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490.73 Equipment for General Use, Pressure and Temperature Limit Control
Each boiler shall be equipped with a means to limit the maximum temperature, pressure, or both, by directly or indirectly interrupting all current ...
National Electrical Code 2017 of Illinois > 4 Equipment for General Use > 490 Equipment Over 1000 Volts, Nominal > 490.73 Pressure and Temperature Limit Control
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Cooling systems shall not use hot-gas bypass or other evaporator pressure control systems unless the system is designed with multiple steps ...
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Cooling systems shall not use hot gas bypass or other evaporator pressure control systems unless the system is designed with multiple steps ...
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909.12.3.1 Fire Protection and Life Safety Systems, Pressurization, Airflow or Exhaust Method
Mechanical smoke control systems using the pressurization, airflow or exhaust method shall have completely automatic control ...
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