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Smoke dampers can be activated by the fire alarm system, usually initiated by smoke detectors, or interlocked with a fire suppression system. Smoke dampers close by an electric or pneumatic actuator, or a spring actuator, and can be either manually reset or driven open on a reset signal to the electric or pneumatic actuator.
Fire/smoke dampers are similar to fire dampers in fire resistance rating, and also prevent the spread of smoke inside the ducts. When a rise in temperature occurs, the fire damper closes, usually activated by a thermal element which melts at temperatures higher than ambient but low enough to indicate the presence of a fire, allowing springs to ...
Smoke detectors [70] Specialty Detection – Flame, Beam, CO, Thermal Sensing Cable [71] Standalone Fire Alarm [72] Thermostats [73] Honeywell T87, its classic "Round" thermostat; Variable Air Volume (VAV) Controller, Wall Module and Box [74] Variable Frequency Drive (VFD) [75] Warehouse Automation [76] Water Purifiers [77] WIN-PAK software ...
Once smoke is detected, the actuator will automatically close the smoke damper until it is manually re-opened. Fire dampers can be found in the same places as smoke dampers, depending on the application of the area after the firewall. Unlike smoke dampers, they are not triggered by any electrical system (which is an advantage in case of an ...
Some registers, particularly those in commercial buildings or institutions which house large numbers of people (such as hotels or hospitals) have a fire damper attached to them. This damper automatically senses smoke or extreme heat, and shuts the register closed so that fire and smoke do not travel throughout the building via the HVAC system. [12]
A short piece of fire hose, usually 10 to 20 feet (6.1 m) long, of large diameter, greater than 2.5 inches (64 mm) and as large as 6 inches (150 mm), used to move water from a fire hydrant to the fire engine, when the fire apparatus is parked close to the hydrant. Solid stream A fire-fighting water stream emitted from a smooth-bore nozzle.
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