WebMay 9, 2009 · Apr 29, 2009. #6. The mechanical code dictates air moving "systems" over 2000 cfrm require automatic shut down. This also includes two or more units each under 2000 cfm serving the same area and totaling over 2000 cfm would require detection on each unit and global shutdown. I believe you are going to need a duct detector on each VAV if it … WebMar 1, 2007 · Refer to Table 607.3.1 (not shown here) of the International Mechanical Code (IMC). All dampers must be installed in accordance with the manufacturer’s installation instructions and the UL listing for the damper. Fire dampers are tested in accordance with UL 555 and must be labeled for use in dynamic systems designed to operate with fans ...
How to properly integrate fire alarm systems and HVAC systems
WebDec 13, 2024 · Design engineers performing this work should be aware of this allowance and not specify that an alarm should occur from a duct-type smoke detector. However, beyond these and a few other requirements, NFPA 72 code is rather silent on fire alarm and HVAC interfaces. This is particularly true when an integrated BAS will be used. WebAug 12, 2024 · Fire dampers are tested and listed for use in air-conditioning and ventilating ducts by UL in accordance with UL 555, Fire Dampers. These dampers include single-blade, multiblade, and interlocking-blade types, all actuated by fusible links. Smoke dampers require compliance with UL 555S, Smoke Dampers. magnum ice cream dark chocolate raspberry
Chapter 6: Duct Systems, California Mechanical Code 2016
WebThe ICC Mechanical Code states, “The actuation of a duct smoke detector shall activate a visible and audible supervisory signal at a constantly attended location. In facilities required to be monitored by a supervising station, duct smoke detectors shall report only as a supervisory signal, not as a fire alarm.” WebThe 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 … WebDuct Smoke Detectors can also be powered by 120 Voltage (VAC), the primary power for the Duct Detector is provided by an electrical circuit; by using this method of power for the detector, the Fire Alarm Control Panel cannot reset the Duct Detector. ... The International Mechanical Code requires a duct smoke detector in the return for units ... nyu proof of degree