Hvac Smoke Detector Wiring

A wiring diagram is a simplified traditional photographic depiction of an electric circuit.

Hvac smoke detector wiring. I also wrote and article on hva. Tool free plug in sampling tubes speed and simplify installation. This means that it up to the ahj to decide which standard they follow. Also a contractor is allowed to program smoke detectors mounted in the air ducts of hvac systems to initiate either an alarm signal at the protected premises or a supervisory signal at a constantly attended location or supervising station nfpa 72 2016 section 21 7 4.

Innovairflex duct smoke detectors combine an impressive collection of innovations to greatly simplify hvac system monitoring. The 14 3 cable is composed of a black a white a ground wire but also an extra wire which can be red or yellow the red being more commonly available. Wiring smoke detectors electrical project skill level. Assortment of duct smoke detector wiring diagram.

Hvac duct smoke detection. Nfpa 90a also states where an approved fire alarm system is installed in a building the duct smoke detectors shall be connected to the fire alarm. It reveals the elements of the circuit as streamlined shapes and also the power and also signal connections between the devices. Where to place smoke detectors in the ductwork on commercial projects to comply with code.

Duct detectors smoke detection nfpa 90a code requirements. The nfpa 90a is specific in defining the position of the duct smoke detectors in the ductwork. Hard wiring also involves interconnecting all the other smoke detectors together with the first smoke detector using a 14 3 cable. This is a video simplifying the duct smoke detectors you will commonly see these installed in the duct work on hvac systems.

One unit can accommodate multiple installation footprints to overcome mounting constraints. Nfpa 90 states that the smoke detector should be installed in the supply after 2000 cfm and imc 606 2 1 says the return.