Aspirating Smoke Detector Pipe Installation USER GUIDE
User Guide: Aspirating Smoke Detector Pipe Installation Table of Contents Scope of this user guide................................ 3 Sampling Methods........................................ 11 Designing a Pipe Network............................. 3 Standard Pipe Network Sampling................................11 Pipe Overview................................................. 4 Capillary Tube Sampling..............................................11 Pipe Network Components...............................
User Guide: Aspirating Smoke Detector Pipe Installation Scope of this user guide The purpose of this user guide is to provide details on the physical installation of the pipe network for the FAAST Fire Alarm Aspiration Sensing Technology® aspirating smoke detector. Local codes and regulations may vary and take precedence over the information contained in this user guide.
User Guide: Aspirating Smoke Detector Pipe Installation Pipe Overview Fittings Pipe Network Components Fittings are used to connect sections of pipe together on longer network runs and are made from the same material as the pipe. There are several types of fittings to allow for various bends, straight runs, branches and connections. Common fittings are described in the following sections.
User Guide: Aspirating Smoke Detector Pipe Installation End Caps Mounting Brackets The end of the pipe should be terminated with an end cap. The end cap may have a sampling port depending on the system design. The size of the port in the end cap is determined by the PipeIQ software. An end cap is shown in figure 4. The pipe network is mounted to the ceiling, or other appropriate location, using mounting brackets. A large variety of brackets are available from a standard pipe supplier.
User Guide: Aspirating Smoke Detector Pipe Installation Pipe Network Installation Mounting the Pipe Network This section provides the basics to installing a pipe network. Keep in mind that each system will have different characteristics, and will have variations to accommodate. The most common issues are described in the following sections. To ensure a pipe network performs as expected, it must be designed in PipeIQ and installed as specified by the software.
User Guide: Aspirating Smoke Detector Pipe Installation Drilling Sample Ports Installation Stages Each port in a sampling pipe represents a smoke detection location. Port placement and size are determined using the PipeIQ software. Sample ports should be measured, marked, and drilled before the network is installed. To prevent sampling ports from being blocked by dust and dirt, place ports on the bottom side of the sampling pipe, not the top side.
User Guide: Aspirating Smoke Detector Pipe Installation Application and Design • Understand local codes, standards, and regulations This section is intended to provide general design and application guidelines for designing pipe networks in conjunction with the FAAST system. It contains design considerations and recommendations on how the FAAST system may be installed in various applications. • G ather all relevant information about the site, including the floor plan for the protected space.
User Guide: Aspirating Smoke Detector Pipe Installation Regulatory Requirements Transport times and obscuration levels required at each sample port are as below: Local codes and regulations can determine the size and spacing between the sample ports in a network, making them a critical part to any pipe design. These requirements change depending on the type of environment being monitored. Local codes and standards take precedence over any parameters suggested by this document for FAAST systems.
User Guide: Aspirating Smoke Detector Pipe Installation Site Layouts and Measurements Environmental Conditions Planning of fire protection zones and relevant FAAST system locations are needed to begin the planning process. The plan should include measurements of the area to be protected and any areas designated for a different use. The plan should also show any obstacles to the flow of air in the space, i.e. partitions or other large objects. Areas requiring special protection should also be noted.
User Guide: Aspirating Smoke Detector Pipe Installation Sampling Methods 7. There are two general types of sampling methods: standard pipe network sampling and capillary tube sampling. From these sampling methods, several design configurations can be used to meet the needs of a particular site environment. Local codes and standards along with site requirements will help determine the best air sampling method. 8. 1.
User Guide: Aspirating Smoke Detector Pipe Installation Open Area Protection Frequently Asked Question – How do I design for a peak ceiling? Ceiling Sampling In typical ceiling installations, the pipe network is suspended from 1" to 1 ft. (25 mm to 300 mm) below the ceiling level in the protected area unless otherwise specified by local codes and standards. This type of installation is the most common.
User Guide: Aspirating Smoke Detector Pipe Installation Under Floor Protection Inter-Beam / Below-Beam Sampling Floor Void Sampling When large ceiling beams are used in construction, pockets of space are created between the beams. In normal circumstances, the pipe network is mounted on the bottom of the beams and does not sample the large space between the beams.
User Guide: Aspirating Smoke Detector Pipe Installation Object Protection Cabinet Sampling Above-Cabinet Sampling Equipment cabinet sampling may be accomplished in two ways: pipe networks and sampling ports can be installed directly inside the equipment cabinet, or directly over the equipment cabinets being monitored if the cabinets have ventilation grills. In above-cabinet sampling, the pipe network should be installed directly over the cabinets that will be protected.
User Guide: Aspirating Smoke Detector Pipe Installation Large Area Protection Cold Area Protection Large volume areas and areas with high ceilings require special design considerations for the pipe network design. Stratification occurs when smoke is heated by smoldering or burning materials and becomes less dense than the surrounding cooler air. The smoke rises until there is no longer a difference in temperature between the smoke and the surrounding air (see NFPA 72-2013 A.5.7.1.10).
User Guide: Aspirating Smoke Detector Pipe Installation High Air Exchange Areas Generally the FAAST detector should not monitor more than two air handling units. When monitoring multiple units with one device, the AHUs should have similar flow at all times. The number of air handlers monitored is limited by the maximum length of the pipe network. However, the degree of particle dilution and air movement that occurs with multiple air handlers can adversely affect system response times.
User Guide: Aspirating Smoke Detector Pipe Installation In-Duct Sampling Small Duct Sampling The FAAST detector is approved for in duct applications. National and local safety standards and codes recognize the ability of air duct systems to transfer smoke, toxic gases, and flame from area to area. Sometimes smoke can be of such quantity as to be a serious hazard to life safety unless blowers are shut down and dampers are actuated.
User Guide: Aspirating Smoke Detector Pipe Installation Large Duct Sampling Port Orientation For ducts with a width of 3 ft. to 7 ft. (1 m to 2 m), two branch pipes are recommended for the inlets. Inlet pipes should enter a quarter of the way from the top and bottom of the duct, as shown in figure 24. The exhaust pipe should be inserted approximately 18" (0.5 m) from the inlet pipes and half way up the height of the duct.
User Guide: Aspirating Smoke Detector Pipe Installation Basic Pipe Network Cleaning and Maintenance Procedure • I f the low flow condition persists, perform another manual check of the pipe network against the pipe layout report generated by PipeIQ. Also, if the exhaust pipe is not situated in the protected space the low/high flow condition could be the result of differences in room pressures that have changed do to open doors, windows or upgrades to ventilation units.
User Guide: Aspirating Smoke Detector Pipe Installation Technical Support System Sensor strives to provide our customers with outstanding support for the FAAST Fire Alarm Aspiration Sensing Technology and all of our products. For more information, contact us using one of the methods below: Web: E-mail: Phone: systemsensor.com/faast systemsensor.com/contact 800.736.7672 (press 2) Mon-Fri, 7:30 a.m. – 5:00 p.m. CST User Guide: Aspirating Smoke Detector Pipe Installation ©2014 System Sensor.
