Fire alarm relays are used to accomplish a number of functions: anywhere from shutting down an air handling unit, releasing an electrically help door, activating an exhaust fan, or activating elevator recall function. Because the requirements of monitoring of the… Continue Reading
The disconnecting means for the fire pump shall be marked as such as well as locked in the on position. During a fire condition, when the sprinkler system is activated, the fire pump shall run until the responding emergency unit,… Continue Reading
17.16.2.2.2 Dry-Type Sprinkler. (1) A pressure supervisory signal-initiating device for a dry- pipe sprinkler system shall indicate both high- and low- pressure conditions. (2) The off-normal signal shall be initiated when the pressure increases or decreases by 10 psi (70… Continue Reading
Stair Pressurization is provided to allow building occupants to safely evacuate a building using the stair cases. Fans are provided to supply air into the staircase upon activation of an associated alarm condition. The idea is to pressurize the stairs… Continue Reading
21.3.5* A lobby smoke detector shall be located on the ceiling within 21 It (6.4 m) of the centerline of each elevator door within the elevator bank under control of the detector. 21.3.3 Unless otherwise required by the authority having… Continue Reading
10.15* Protection of Fire Alarm System. In areas that are not continuously occupied, automatic smoke detection shall be provided at the location of each fire alarm control unit(s), notification appliance circuit power extenders, and supervis- ing station transmitting equipment… Continue Reading
14.6.1.1 A set of reproducible as-built installation drawings, operation and maintenance manuals, and a written sequence of operation shall be provided to the building owner or the owner’s designated representative. Looking for our NICET Fire Alarm System Exam Study… Continue Reading
Saw this install at a project in a newly built warehouse. The blue colored pull station is there to release the standpipe solenoid. The standpipe is dry, not holding water, because it is installed in a huge freezer where if… Continue Reading
The idea behind requiring a manual fire alarm box is to allow a means to initiate an alarm signal to Central Station in the event the fire detector or sprinkler water flow device is out of service or being tested.… Continue Reading
Below is an installation of a smoke detector on a peaked ceiling. NFPA 72 says that such detector shall be installed within 36 inches of the peak of the ceiling. 17.7.3.3* Peaked. Detectors shall first he spaced and located within… Continue Reading
