Hvac smoke detector

What do smoke detectors actually detect? Will heat make a smoke detector go off? Where should duct smoke detectors be located? How much do smoke alarms and carbon monoxide detectors cost to install?

One unit can accommodate multiple installation footprints to overcome mounting constraints. Tool-free, plug-in sampling tubes speed and simplify installation. The detector shall be listed for the air velocity, temperature and humidity anticipated at the point where it is installed.

The NFPA 90A is specific in defining the position of the duct smoke detectors in the ductwork. The code details why smoke detectors are required along with the intentions of installing duct smoke detectors inside the ductwork to comply with code requirements. This includes where multiple air handling systems utilize common ducts with a combined design capacity greater than 0cfm. Duct mounted smoke detectors are designed to provide a specific type of protection that cannot be duplicated by any other type of system.

However, there has been a tendency to misapply these devices in the past — attempting to use them as a substitute for an early warning smoke detection system. By the time the fire department arrive the smoke in the corridors on the upper levels had dispersed and neither the fire department nor the tenants could locate the source of the smoke. Like,subscribe or comment below.

Filtrex is an intelligent smoke detector that removes airborne particles before they reach the sensing chamber. Smoke detectors are ideal for detecting a problem with the air handler. Duct Smoke Detectors are a key component of Fire Detection and Fire Alarm systems.

For example, if the fan motor were to begin smoking the duct detector woul ideally, shut down the system before the fan caught on fire. Duct detectors located on the return side and upstream of any filters or introduction of outside air detect smoke coming from an air conditioned space. This eliminates interference caused by outside smoke or heat-strip dust-accumulation burnoff. The InnovairFlex product line offers testing and inspection features to meet any code. The 2:sensor-to-power capability allows a power board to monitor both supply and return side detectors when required.

This duct smoke detector features a versatile mounting option for square or rectangular configurations. It is designed with modular construction for installation for either round or rectangular ductwork. Up to detectors can be interconnected for multifan shutdown.

It is ideal for textile mills, dusty manufacturing facilities, paper mills, and recycling centers. Outdoors: Avoid using detectors outdoors, in open storage sheds,. Smoke emitter cartridges from Grainger help make testing easier. Use them for airflow testing, air leak tests, smoke alarm placement and smoke alarm testing.

Choose from smoke cartridges, smoke matches, smoke pens, smoke candles and other smoke emitters that generate smoke by chemical reaction rather than continuous flame. Duct smoke detectors provide early detection of smoke and products of combustion present in air moving through HVAC ducts. These devices are designed for prevention of smoke recirculation in areas by the air handling systems. Fans, blowers and complete systems may be shut down in the event of smoke detection.

An air duct smoke detector is a regular photoelectric smoke detector , only set up to monitor the air in a plenum, or air duct. The way most photoelectric smoke detectors work is based on reflectivity. A Light Emitting Diode (LED) shines light into a black chamber so its light will be absorbed by the inside black walls. Install the duct smoke detector on a flat section of HVAC duct between six and ten duct widths from any bends or obstructions.

Install supply -side detectors at a point downstream from the supply fan and after the air filter.