My understanding is that a remote test station is used to test a duct smoke detector without a) smoking it or b) using, say, a magnet on it. Out of stock. As the title says, I have some questions about the fire alarm side of duct smoke detectors. If it were a manual pull station for the fire alarm panel that would be a different story. Click Here to join Eng-Tips and talk with other members! In addition to the testing required in Table 14.4.3.2(g) (1) and Table 14.4.3.2(h), test duct smoke detectors that use sampling tubes to ensure that they will properly sample the airstream in the duct using a method acceptable to the manufacturer or in accordance with their published instructions. H0160-00 [7.2] Photo Detector Board 1. The PAD100-DRTS provides a supervised remote test switch for the PAD100-DUCTR duct detector. Switch ratings (SD-TRM) Voltage: 200 Vdc, max. Audible and visual alarm indicators, remote status indicators and remote reset/test switches can be accommodated by the Firex Duct units by connecting to the D.C. voltage output terminals 16 to 20 (see page 6 for details). 3. The fire alarm systems primary goal is to enable occupants to escape more quickly and allow a safer building for firefighters to enter. By law, all buildings with HVAC systems must have a way to test the system to make sure it is working properly. Once connected to the fire alarm system, the rules for installation, testing, and inspecting them are covered in NFPA 72 under which compliance is required. WIRING DIAGRAM FOR RTS151KEY(A) TO DH100ACDC 4-WIRE DUCT SMOKE DETECTOR: FIGURE 6. For additional information on Potter Fire Alarm Systems . In labs, researchers used a spectrum of ultraviolet light called UVC to kill viruses. If one senses smoke, the rest will switch their relays, with the triggered detector reporting to the fire alarm panel so the source can be pinpointed. (Remote Test Switch) NFPA 72 (2002) 72-43 5.14.5.8 Please let me know if you think my interpretation is correct on th Special Hazards Always follow duct detector manufacturers instructions and code for wiring. December 2022 Videos, January 2023 Duct Detectors Smoke Detection NFPA 90A Code Requirements. The main difference in these two systems is the location of the blower relative to the burner. Please try again. The way I read this I understand that when the Duct Detectors that are installed cannot be seen easily they are either required to have their own point or zone on the panel so you know exactly which detector activated or they need to have a RTS. It shall be capable of local testing via magnetic switch or remote testing using the RTS151KEY(A) remote test station. Amazon has encountered an error. Additionally, good technicians will educate themselves on the proper installation of an essential component. SD505 Duct Smoke Detector Remote Test Switch; UTK Remote Probe; Sight Glass with Condensation Drain; ABS Sampling Pipe; Smoke and Heat Detector Test Kit; CO Sensor; No Entry Film; SOLO Universal Detector Removal Tool; Steel Pipe Type R2525-St; STGD Ring Nut; Scorpion Head Unit Kit SCORP 2001; Download All. Google Maps Location, 1981 Wells Road DNR(W) housings with a date code of 0013 or higher do not require external 24VDC for remote test applications when used with a remote-test-capable detector. November 2017 Smoke dampers operate automatically on detection of smoke and must function so that smoke movement through the duct is halted. Terminal connections shall be of the strip and clamp method suitable for 12-18 AWG wiring. Terminal connections shall be of the strip and clamp method suitable for 12-18 AWG . The duct smoke detectors latch into alarm state when alarm occurs. . In the meantime, smoke is being spread throughout the supply side and into the facility where people occupy the rooms. Copyright 2023 HighPerformanceHVAC.com |. Only the duct unit in alarm will permit resetting of the system from the built in test/reset switch on that particular duct unit. Furthermore, intentions for using duct smoke detectors should not be a substitute for area smoke detectors. To add the following enhancements to your purchase, choose a different seller. July 2020 You are using an out of date browser. I also wrote and article on hva. Whenever smoke has been detected, the fan(s) should be wired to shut down. I could really use some clarifications on a couple things, so if anyone is able to help, I would really appreciate it. 1. Maintenance Requirements Like any other fire safety components, duct detectors need routine upkeep and testing to remain effective. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Additionally, test switches make it possible to test multiple duct detectors at the same time, which can be very helpful in large facilities. Duct smoke detector maintenance requirements are not included in the NFPA standard that covers HVAC systems (NFPA 90A or 90B); however, the International Code Councils 2015 Mechanical Code does state that the standard for maintenance inspections shall be performed in accordance with the ASHRAE/ACCA/ANSI standard number 180. Ive had this question asked of me several times. SuperDuct detectors feature a unique design that speeds installation and . Magnet . However, there are some pros and cons to using duct detector test switches that should be considered before making a decision. This is especially helpful if your detectors are installed in hard-to-reach places. In this case the NFPA 90A requirements for HVAC systems and ductwork. Since HVAC systems do not fall under strict life-safety requirements, the duct detectors only become part of the fire alarm system due to their interconnection, and thus fall under the fire alarm rules and standards for ongoing testing and maintenance. Learn more how customers reviews work on Amazon. November 2019 Do you agree with that? The difference between duct detector test switches and regular switches. Also, for 2-wire detectors, the LED will show red for alarm. Life Safety There are two types of switches that are commonly used with duct detectors: test switches and regular switches. Remember, others will be testing the installation, including the code inspector, fire inspectors, and commissioning people. This leads to a handful of reader questions: 1. Fire Alarm The switch is used to simulate a smoke condition in the ductwork so that the detector can be tested. REMOTE TEST, RESET, AND ALARM STATION Labor-saving Remote Test/Reset stations provide alarm testing and indication from the convenience of a remote . 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Duct detectors are vital pieces of equipment in any HVAC system, but are often overlooked or not given the attention they deserve. Greg Kessinger has been SD&Is fire alarm and codes expert and a regular contributor for more than 15 years. If you do not understand the code or the requirements ask the engineer or another qualified person on the project. Click on the icon next to document links to add them to the download folder. March 2021 My question here is; what, if anything governs this? A green LED flashes to indicate power, a red LED signals local alarm indication, and optional accessories offer a variety of annunciation capabilities. , Potter Announces the PAD300 D-TECT Addressable Sensors and Bases, Potters expanded line of D-TECT Sensors and bases have been designed from the ground up with unmatched, What People Are Saying About Working With Potter. 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. Smoke detectors are ideal for detecting a problem with the air handler. November 2020 Finally, test switches give you peace of mind. Have a question, comment, or request? September 2017 The PAD100-DRTS provides a supervised remote test switch for the PAD100-DUCTR duct detector. May 2019 Get your copy here: NFPA 90a: Standard for the Installation of Air-Conditioning and Ventilating Systems. It shall be capable of local testing via magnetic switch or remote testing using the UL listed RTC100 Remote Test Coil accessor y with the RTS151 Remote Test Station. Test switches also help ensure that your detectors are working properly. 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. These terminals are not supervised and the November 2018 If a remote reset station is needed, it simply resets the smoke detector after it has actuated. To test the detector, simply press . These duct detectors need to be tested on an annual basis by performing what is called a smoke entry test. A01PC4 Apem modular switch contact block APEM 50021169 - Operating Temperature Range (): -20+55, suitable crimping terminal: A01 series, RoHS directive (corresponding to 10 substances): Correspondence, Switch Operation: DP Depending on how the controls are set up will depend on which contacts you use. While the IMC is the most commonly-applied standard in the United States, it's not the only standard that dictates terms for duct detectors. The test switch doesn't test the duct detector per NFPA 72 Table 14.4.2.2(g), so it is just supplemental. I actually lost sleep. Duct smoke detectors work by sampling air currents in air handling equipment to determine if smoke or fumes are present. October 2017 Please check your own individual states adopted language for clarification. Necessary cookies are absolutely essential for the website to function properly. In the event your product doesnt work as expected, or youd like someone to walk you through set-up, Amazon offers free product support over the phone on eligible purchases for up to 90 days. Not sure. September 2016 (2) Rigid mounting to the wall of the duct with the sensing element protruding into the duct. This device is only required when the duct detector is not resettable from the FACU. There is no shame in the average/small alarm company avoiding any project with terms, for example, such as blast wall or deluge system or sprinkler system antifreeze and releasing system to name a few.
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