Roof Top Air Handling Unit audible visual required?

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Gategator37

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Good morning. Do rooftop AHU's require audible and visual? This unit is 10 ft by 20 ft and has 2 supply and 2 return motors. I don't know if it would be considered a part of the building or a machine. Does anyone have experience with these? We do have a relay to shut down on duct detector or general alarm.

Thanks a lot for the help.
 
The rquirements for this is found in the International Mechanical Code if your jurisdiction has
adopted it Article 606. Article 606.4.1 has the supervision requirements.


606.4.1 Supervision. The duct smoke detectors shall be connected to a fire alarm system where a fire alarm system is required by Section 907.2 of the International Fire Code. 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 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.
 
Thanks Rick. I still am unsure if I would need a visual and audible notification appliance located IN the AHU itself.
 
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