Therefore they should complement the buildings fire detection system and not serve as the primary fire detection system.
Hvac duct smoke detector.
Plug in tool free sampling tubes speed installation.
An adjustable housing overcomes mounting constraints.
The duct smoke detector samples air for early detection of smoke and products of combustion present in air moving through hvac ducts.
Nfpa 72 also states that a duct smoke detector is not allowed to replace an area smoke detector.
One unit can accommodate multiple installation footprints to overcome mounting constraints.
A duct smoke detector should shut off a typical blower and fresh air and turn on the exhaust.
Duct smoke detectors are a key component of fire detection and fire alarm systems.
Nor should it serve as an early warning detection system.
Furthermore intentions for using duct smoke detectors should not be a substitute for area smoke detectors.
Hvac duct smoke detection.
Both also have exceptions that allow the deletion of the return duct smoke detectors if the area served is supplied with area smoke detectors and they are configured to control the hvac system in the same way that the duct detectors would have.
Innovairflex duct smoke detectors combine an impressive collection of innovations to greatly simplify hvac system monitoring.
Duct detectors aren t a replacement for room sensors.
If the duct system is designed to carry more than 2000 cfm 5 tons nominal of air you need one in the return if imc is being followed and the supply if nfpa is being followed.