Fire Alarm Hvac Shutdown Relay

Traditionally integration between fire alarm systems and hvac systems has been limited to dry contact type relays.

Fire alarm hvac shutdown relay.

Duct smoke detectors are required unless the entire area covered by the air handler is protected with smoke detectors. The intelligent fire alarm relay can only be used on intelligent fire alarm systems and is made specifically to work with particular brands of fire alarm systems. In some cases positive pressure fans are turned on to create a high pressure area in stairwells which keeps smoke out. In either case these fans draw more current than a fire system relay is rated to handle.

In many such situations the fas designer will not have thought through the interface for each nonfire system. It includes two individual relay control modules and two class b monitor modules. The 1 website for nicet practice tests nicet study guides fire alarm code knowledge and general fire alarm topics. The alarm contractor is only willing to supply a signal to my hvac control panel to.

Our state mechanical code calls for smoke detectors to shut down an air handling device if it supplies more than 2 000 cfm. Each monitor input provides an interface between a fire alarm control panel and one or more normally open contact type devices. The intelligent fire alarm relay. Addressable control module could also shut down the hvac system in case a fire by a logic as required with hvac control ddc panel.

The fire alarm system fas must either monitor or control these nonfire systems. When placing a new fire alarm system in an educational facility a contractor may feel frustrated by the requirement to interface nonfire systems. My current project has a sprinkler system and a fire alarm system. Each relay output is intended for form c switching applications which do not require wiring supervision for the load circuit.

Gamewell fci silent knight firelite notifier siemens and est edwards are just a few name brand examples. Current configuration is a normally closed loo p wired r elay connection in hvac equipment s is not considerable relay to relay connection in hvac control panel and marshalling cabinet plc could be. When a fire alarm occurs it is common to shut down hvac equipment to reduce the spread of smoke and air to feed a fire.