Kmd-5802 Manual

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Jennifer Curtis

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Aug 3, 2024, 11:56:06 AM8/3/24

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A smoke control system is a combination of fans, dampers, warning devices, and other equipment that work together to perform the containment function for any smoke event at any location in a building. A properly designed smoke control system should inhibit or prevent the movement of smoke into areas leading to exits or other designated safe zones in a building.

Manipulating smoke is accomplished by using fans and dampers to control air pressure. Smoke consists of gas and small particles light enough to float in air. These properties allow smoke to be moved by guiding the air in and around a smoke-filled area. Based on smoke detection, a zone containing burning material can be automatically exhausted, using fans, to maintain a negative pressure. The intent is to keep the smoke from migrating to a lower pressure area within the building. This is not always an easy task since the fire is producing heat that can cause pressures many times higher than normal building pressures, but a building fire suppression system can reduce the heat produced by the fire and make smoke management systems far more effective (in addition to reducing the destruction caused by the fire itself).

A smoke control system may not be necessary in every building, and it is not a substitute for early smoke detection, well-marked exits, an evacuation plan, and a fire suppression system. These items should be considered the primary means of saving lives and reducing property damage. A smoke control system can aid in the battle to save lives in the event of a fire by providing and maintaining a viable path for exiting the area to safety as well as reducing property damage caused by smoke.

Dedicated smoke control equipment is used for smoke manipulation only. This equipment only runs if there is a fire or a command from the FSCS. Since it is not used on a daily basis, this equipment requires a weekly self-test to assure it is still in working order.

Non-dedicated smoke control equipment includes air-handling units, exhaust fans, and dampers controlled by a BAS (Building Automation System) that is used for day-to-day control of space conditions for human comfort (temperature and humidity). If a failure occurs on non-dedicated equipment, the fault is more likely to get reported because occupants will complain about the space conditions. Also, a BAS can generate diagnostic alerts to indicate malfunctions in smoke control equipment operation. But unless the equipment is running, little valid diagnostic information can be obtained. For this reason, non-dedicated smoke control equipment is more reliable than dedicated equipment. KMC products are designed for non-dedicated smoke control systems.

The controls on an FSCS are left in automatic mode except for testing and actual smoke incidents. As the name indicates, the manual operator is usually a firefighter who understands smoke control and can operate the panel in an effort to prevent loss of life and limit property damage. Manual commands at the FSCS are given the highest priority of any signal in a smoke control system.

Other vital devices related to smoke control are the sensors that detect smoke in the first place and the dampers that help control the ventilation. KMC sells CAE-1003/1103 smoke detectors and the accessory IEE-1000 series of switch and indicator plates. Also, for pneumatic systems, KMC sells the MCP-8035 series smoke damper actuators. These devices are covered under listings other than UL 864 (see their respective data sheets for more information).