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Duct smoke detectors

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thais

Member
Location
Tampa, FL
I have a building with no fire alarm system. The air handling units require duct smoke detectors. I am proposing to connect the duct smoke detectors to a horn/strobe unit in an area where someone is usually located. In this case, where are others connecting the duct smoke detector alarms?
 
infinity

infinity

Moderator
Staff member
Location
New Jersey
Occupation
Journeyman Electrician
If the building has no fire alarm system what is the function of the duct detectors? Are they for a local alarm or for fan shutdown?
 
ron

ron

Senior Member
Location
New York, 40.7514,-73.9925
If the International Mechanical Code (2003) is in force for your installation, see below:
606.4.1 Supervision.
The duct smoke detectors shall be connected to a fire alarm system. The actuation of a duct smoke detector shall activate a visible and audible supervisory signal at a constantly attended location.

Exceptions:

1. The supervisory signal at a constantly attended location is not required where the duct smoke detector activates the building?s alarm-indicating appliances.

2. In occupancies not required to be equipped with a fire alarm system, actuation of a smoke detector shall activate a visible and an audible signal in an approved location. Duct smoke detector trouble conditions shall activate a visible or audible signal in an approved location and shall be identified as air duct detector trouble.
 
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