In this case, the duct detectors are ignored until they cause the building to get too hot or too cold because the forced air system is not functioning. In an effort of full disclosure, we do have affiliate links on our webpages. October 2017 [3] Contents of the Duct Detector Kit [4] Limitations of Duct Detectors DH400 detectors are designed to operate with 12 or 24 VDC [5] Installation Sequence UL listed compatible 2-wire control panels. 1. November 2017 In those cases we would monitor the dry contacts on the duct detector to cause an alarm or supervisory condition at the main FACP but a reset of the FACP will not reset the duct detector in alarm. Always read the manufacturers instructions, guidelines, and recommendations when installing and testing smoke detectors in the ductwork. (Remote Test Switch) NFPA 72 (2002) 72-435.14.5.8 Please let me know if you think my interpretation is correct on this matter. But are these test switches really necessary? By joining you are opting in to receive e-mail. AT DUCT DETECTOR METHOD #2 - TED TEST STATION FIGURE 5. . Engineering Codes, Standards & Certifications, Low-Volume Rapid Injection Molding With 3D Printed Molds, Industry Perspective: Education and Metal 3D Printing. August 2021 Then, turn the key back to the NORMAL position and remove. Additionally, test switches make it possible to test multiple duct detectors at the same time, which can be very helpful in large facilities. Tools Announcements I'm not aware of any potential ADA requirements for the operation of a test switch. Products SuperDuct detectors feature a unique design that speeds installation and . My interpretation of NFPA 72-23.8.5.4.6.4 is that a reset switch is required when the duct detector is not resettable from the FACP. March 2018 providing a trouble signal in the event that the front cover is removed. Book Review Duct detector test switches are usually located near the fire alarm control panel. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.The Eng-Tips staff will check this out and take appropriate action. If it were a manual pull station for the fire alarm panel that would be a different story. The System Sensor RTS451KEY is an automatic fire detector accessory designed to test remotely located duct and beam detectors. I could really use some clarifications on a couple things, so if anyone is able to help, I would really appreciate it. January 2022 Alarm current [6] Duct Detector Maintenance and Test Procedures must be limited to 100mA or less by the control panel. For 4-wire detectors, the System Sensor RTS451KEY features a multi-colored LED that alternates between steady green and red. You are using an out of date browser. 01 to 64 (64 point control panel) 01 to 127 (127 point control panel) Accessories: Remote test-reset station . Ive had this question asked of me several times. Already a member? Question: Where to place smoke detectors in the ductwork on commercial projects to comply with code? Flammable & Combustible Liquids Duct detector test switches are intended to be used when it is necessary to test the operation of a duct detector without having to enter the space where the detector is located. Green indicates power as well as that the detector board is in place. Additionally, red indicates alarm. Sometimes the duct smoke detector is pre-wired into the HVAC unit. Audible and visual alarm indicators, remote status indicators, and remote reset/test switches can be accommodated by the SM-501 Series duct units by connecting to DC voltage output terminals 16 through 21. Standpipes This is especially helpful if your detectors are installed in hard-to-reach places. If a facility only has a few duct detectors, it may not be worth the investment to purchase a test switch. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. When either is detected, the device will close the dampers on the duct, shut down the fans and blowers to eliminate the oxygen source to help prevent the fire's spread, and trigger an audible and visible signal at the fire control panel. I was appalled to find compliment used where complement was appropriate in what seems to be an outerwise quite professional article. Already a Member? Always follow duct detector manufacturers instructions and code for wiring. Factory New. January 2019 . June 2020 Reviews (0) The Viking VK3521 Quick Response Pendent Sprinkler is a small thermosensitive glass bulb spray sprinkler available with various finishes and temperature ratings to meet design requirements. August 2018 My question here is; what, if anything governs this? But opting out of some of these cookies may have an effect on your browsing experience. September 2016 Please email him your fire & life safety questions for potential inclusion in this column atgreg@firealarm.org. They are not required for the operation of the detector, but they may be used to verify that the detector is working properly. June 2021 NFPA 90A is specific to Air Conditioning and Heating Systems installation. They are usually red in color and have a clear cover so that they can be easily seen. the detector, test the duct air velocity, temperature, and humidity to verify that it is within the operating range of the SuperDuct detector. NFPA 90 states that the smoke detector should be installed in the SUPPLY after 2000 CFM, and IMC 606.2.1 says the RETURN. We install the duct detector on the outside of a duct and from the housing Those two tubes then go into the duct. WIrInG DIaGram for rtS151 to D2-2WIre DuCt Smoke DeteCtor: rtS151 remote test Station InStallatIon anD maIntenanCe InStruCtIonS 3825 Ohio Avenue, St. Charles, Illinois 60174 1-800-SENSOR2, FAX: 630-377-6495 www . First, it will send an alarm to alert the facility operator and maintenance staff. The detector should sound an alarm if it is working properly. Area detection can be used to shutdown units. Just got a call from the field asking if . Under what circumstances will this be the case? Duct detector test switches: what are they and do you need them? For those clients who wonder who is inspecting and testing HVAC duct detectors on a yearly basis, the answer is probably nobody; however, for those that do, it tends to fall on fire alarm installation companies because of NFPA 72. The housing goes around the detector and one of two sensing tubes. It shall be capable of local testing via magnetic switch, test button on the cover, cover integrated smoke test port or remote testing using the RTS151 or RTS151KEY Remote Test Station. LEDs on each detector illuminate to provide local alarm indication, and optional accessories offer a varietyGARAGE of an-nunciation capabilities. As the title says, I have some questions about the fire alarm side of duct smoke detectors. April 2018 SuperDuct is a slim feature-rich alternative to bulky duct smoke detectors. Duct Smoke Detection - NFPA 90A Code Requirements There are exceptions to the two basic requirements: Additionalreferences to smoke detector safety in air conditioning and heating systems installation can be found using the following resources: In addition to theinstallationrequirements for smoke dampers and fire dampers, the code requirement for any safety devices in ductwork ventilation systems is necessary for basic life and safety. To test the duct detector, the user simply needs to activate the test switch. 8. . Feb 5, 2014 #3 I'm not aware of any potential ADA requirements for the operation of a test switch. The switches are typically used to test the operation of the detectors alarm, to test the detectors ability to reset itself after an alarm, and to test the detectors ability to perform a self-diagnostic test. Duct detectors are designed to detect fires within the HVAC system and sound the alarm to give the occupants time to evacuate the building. In air supply systems with a capacity greater than 2000 CFM's downstream of the air filters and upstream of any branch ducts. up to 18 inches in width. info@rybbfirealarm.com Every combination of Visual and Audible notification for Duct Smoke Detectors with Key Security or Magnet Remote Testing ability. Reply. Hold test magnet where indicated on the side of the duct smoke detector for more than 5 seconds. November 2021 We also believe the products we link to help our site visitors find products they need to enhance or repair their HVAC equipment. August 2020 rybbfirealarm.com@gmail.com How well do you know the installation and testing requirements for duct smoke detectors? March 2022 With key, for duct smoke detector, sold in each, System Sensor RTS151KEY remote Test and reset station with key for duct smoke detector. February 2018 Additionally, some test switches require specialised training to use, which can add to the cost. October 2021 While I am a licensed Master HVAC contractor I am not a code official but here is my answer. Not sure what prompted the question nor what's driving the need to mount it at this level. What happens when a fan motor catches fire or starts smoking before it catches on fire but continues to operate in some capacity? Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.Learn more how customers reviews work on Amazon. We are sorry to hear of the passing of Steve Schilb, longtime employee of Harrington Signal and Potter Electric. Green indicates power as well as that the detector board is in place. For a better experience, please enable JavaScript in your browser before proceeding. It shall be capable of providing duct smoke detector status via the UL listed model APA151 Piezo Annunciator. To test the detector, simply press the switch and hold it for a few seconds. (7) (a). 2-Wire Duct Smoke Detector - SuperDuct Series. The duct smoke detectors shall be connected to a fire alarm system where a fire alarm system is required by Section 907 . The LED should turn off. Promoting, selling, recruiting, coursework and thesis posting is forbidden. May 2018 December 2017 WIRING DIAGRAM FOR RTS151 TO D4120 4-WIRE DUCT SMOKE DETECTOR: RTS151 Remote Test Station Alarm Bells: NFPA 72G; electric [vibrating,] [single stroke,] [8] [10] [ ] inch bell with There seems to be a conflict in the codes from the NFPA 90A and the International Mechanical Code. Remote Test Stations Labor-saving Remote Test/Reset stations provide alarm testing from the convenience of a remote location. Is it sometimes the case that a duct detector is NOT resettable from the FACP?