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Table of Contents
Summary of Contents for Rehau Firepex
- Page 1 ™ FIREPEX RESIDENTIAL FIRE SPRINKLER SYSTEM Design and Installation Guide...
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Page 2: Table Of Contents
3.1 Application 3.2 Standards and Certifications 7. Installation Considerations 3.3 Warranty 7.1 Ensure Design Meets Installation Guidelines 7.2 Mounting FIREPEX Sprinkler Fittings 4. RAUPEX PEXa Pipe 7.3 RAUPEX Pipe Packaging 4.1 Pipe Properties 7.4 EVERLOC+ Fitting Packaging 4.2 Pipe Dimensions and Weights 7.5 Uncoiling Pipe... -
Page 3: Scope
Indicates a risk of property damage NOTICE the FIREPEX system but is not specific to your project conditions. It is the responsibility of the licensed professional to check the prevailing local codes and to verify that technical information presented in this Only trained personnel should be engaged in the installation process. -
Page 4: Design & Applications
Within the wet pipe systems, NFPA 13D defines the layout of systems system that is designed and installed in accordance with this standard under the following types, for which the FIREPEX system can be is expected to prevent flashover (total involvement of the fire) in the installed: room of fire origin, where sprinklered, and to improve the chance for... -
Page 5: Piping Configurations
2.2.2 Passive Purge Sprinkler System 2.3 Piping Configurations A passive purge system is defined in NFPA 13D as a type of sprinkler The NFPA 13D standard defines three types of piping systems that system that serves a single toilet in addition to the sprinkler system. are allowed to be used in residential occupancies stating that piping configurations shall be permitted to be gridded, looped or straight- To Domestic Hot Water... -
Page 6: Plumbing System Connections
2.3.3 Straight-run System A straight-run system, also known as a tree-type system, is a The FIREPEX system shall not have a fire department connection and sprinkler system in which each sprinkler is served by only one water the static pressure of the system shall be limited to 80 psi. If the flow path. -
Page 7: System Overview
2-year limited warranty. Fig 3.2: EVERLOC+ compression-sleeve fittings and PEXa compression sleeves REHAU offers this warranty when the installation is carried out in accordance with the requirements outlined in the REHAU PEXa Warranty 855.018, which is available as a separate document at... -
Page 8: Raupex Pexa Pipe
Since PEX pipe has a thicker wall than copper tube, the inside diameter (ID) RAUPEX is manufactured by REHAU in a facility whose quality is slightly smaller. However, since PEX pipe is not susceptible to the management system is ISO 9001 certified. -
Page 9: Pressure And Temperature Ratings
Failure to follow pressure and temperature limits may damage the pipe indicates the allowable hours of 140°F water recirculation in 1 day. resulting in leaks and operational failures, and will negate any warranty provided by REHAU for RAUPEX pipes. The designer must 1 = 4 hours 3 = 12 hours... -
Page 10: Bend Radius
4.9 Bend Radius 4.11 Freeze Break Resistance RAUPEX pipe may be bent, even when cold. REHAU support bends The flexibility of the RAUPEX pipe allows it to expand as water freezes can assist to create tight bends without kinking. The typical bend in the pipe as long as the pipe has room to expand. -
Page 11: Everloc+ Compression-Sleeve Fittings
3/4, to 2 in. sizes and are listed for use with RAUPEX white UV shield pipe (3/4 to 2 in.) manufactured in accordance with ASTM F876. For a detailed description of the REHAU system components, refer to the REHAU Building Solutions Product Catalog (855.312). 5.1.1 Fitting Features Fig. - Page 12 All metal fittings are produced from ECO BRASS (UNS Fig. 5.6: EVERLOC+ PEXa compression sleeves 69300 or CW 724R). See also REHAU Technical Bulletin TB264 EVERLOC+ Lead-free Brass Fitting Material. 5.1.6 Certifications The EVERLOC+ compression-sleeve fitting system is certified to the...
- Page 13 5.1.7 Equivalent Length of Fittings Adapters (PEX to MPT/FPT) It is common practice for designers to convert the pressure drop Equivalent Fitting Description Length (ft) across fittings to an average equivalent length of pipe. These equivalent lengths are added to the total pipe length. Designers can 3/4 x 3/4 in.
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Page 14: Fitting Assembly
5.2 Fitting Assembly Required assembly tools include: Before starting the installation process, read the EVERLOC+ - RAUPEX cutter Compression-sleeve System Product Instructions (855.724). - EVERLOC+ compression-sleeve tools - EVERLOC+ expander heads and compression jaws Assembling the EVERLOC+ compression-sleeve system requires the use of the EVERLOC+ compression-sleeve tools. - Page 15 REHAU permits EVERLOC+ compression-sleeve joints (polymer and cause injury or property damage. LF brass) to be buried or concealed. REHAU recommends that - Never use a torch, open flame or heat gun on a pressurized system. threaded connections never be buried or concealed as they must be - Never rework a connection that is under pressure.
- Page 16 - Adhesives and tapes other than those recommended by REHAU use after completion of the assembly process. There is no wait time - Oil/petroleum-based products for the system to be put into service. See Section 7.12 for REHAU - Paints, solvents pressure test procedures.
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Page 17: Everloc+ Compression-Sleeve Tools
NOTICE 5.3.10 Copper Soldering Proper soldering techniques must be followed when soldering all Use only EVERLOC+ compression-sleeve tools for assembly and compression-sleeve fittings according to the Copper Development installation. Use of other tools will result in an improperly assembled Association (CDA) Handbook: joint, which may result in leaks and property damage. - Page 18 5.4.2 EVERLOC+ XL Power Tool 1 1/4 to 2 in. 5.4.3 EVERLOC+ XL Expander Tool 1 1/4 to 2 in. Assembling the EVERLOC+ compression-sleeve system with In addition to the EVERLOC+ XL power tool, the EVERLOC+ XL diameters of 1 1/4 through 2 in. requires the use of the EVERLOC+ expander tool can be used for the expansion steps of the 1 1/4 to 2 in.
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Page 19: Fire Sprinklers
Observe all applicable national, state and local laws, regulations, standards, codes and ordinances. If you believe REHAU product information conflicts with applicable code requirements, industry standards, or the recommendations of other manufacturers... - Page 20 5.5.4 Horizontal Sidewall Sprinklers Horizontal sidewall sprinklers are visible in the wall and do not have a cover plate. During fire conditions, continued heating of the exposed sprinkler causes the heat responsive element to disengage. This allows water to flow from the sprinkler. Fig 5.25: Horizontal sidewall sprinkler...
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Page 21: System Planning
6. SYSTEM PLANNING The overall system layout and calculation of the hydraulic demand 6.2 Step Two - Obtain Residence Information must conform to all requirements of NFPA 13D and IRC P2904. Prior The next step is to identify the characteristics of the residence to to installation, construction plans showing sprinkler locations, piping ensure the residence can be protected with a NFPA 13D residential layout and hydraulic demand (flow in GPM and required pressure... -
Page 22: Determine Layout Of Water Supply
6.4 Step Four - Determine Layout of Water Supply 6.4.3 Pressure Reducing Valves Determine the layout of the water supply, the underground piping that As required by typical plumbing codes, if the pressure entering the will supply water to the residence. This includes determining the residence is above 80 psi (6 bar), a pressure reducing valve (PRV) is length, type and size of pipe required and accounting for pressure required to limit the pressure to a maximum of 80 psi (6 bar). -
Page 23: Design Piping System Layout
6.6 Step Six - Design Piping System Layout If the calculations do not show that adequate flow and pressure is Lay out the piping system for the sprinklers using either a gridded, available, modifications to the piping system can be made in an looped or straight-run configuration as defined by NFPA 13D. -
Page 24: Installation Considerations
- Install plumbing fittings - Install plumbing pipe The FIREPEX sprinkler fittings are available in 3/4 or 1 in. sizes. Each - Install fire sprinklers fitting has a 1/2 in. NPT female adapter for mounting of the fire... - Page 25 - H is the distance between the bottom of the joist and the bottom of the FIREPEX sprinkler fitting bracket - S is the distance from the top of the threads of the fire sprinkler to the face of the drywall (provided by the sprinkler manufacturer) - DW is the thickness of the drywall.
- Page 26 - H is the distance between the bottom of the joist and the bottom of the FIREPEX sprinkler fitting bracket, - S is the distance from the top of the threads of the fire sprinkler to the face of the deflector (provided by the sprinkler manufacturer), - DW is the thickness of the drywall - D is the distance between the face of the drywall and the face of the deflector (provided by sprinkler manufacturer).
- Page 27 7.2.1.4 Horizontal Sidewall Sprinkler Mounting Positioning the FIREPEX sprinkler fitting for a horizontal sidewall sprinkler can be done using equation 2, where H gives distance from the face of the stud to the bottom of the FIREPEX sprinkler fitting bracket.
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Page 28: Raupex Pipe Packaging
7.5 Uncoiling Pipe For best results when installing RAUPEX pipe from a coil, use a REHAU approved uncoiling device. This will allow the pipe to lay flat (not twisted) when installed. Twisting the pipe may place stress on the pipe after installation. -
Page 29: Distance Between Fittings
Table 7.1: RAUPEX Bend Radius 7.8 Pipe Protection Place pipe protection around RAUPEX pipe to prevent abrasion when Typical Minimum Bend Radius in (mm) passing through the building's framework. Pipe Size Typical 8X OD Min. Cold 5X OD Min. Heated 3X OD 3/4 in 7.0 (178) 4.375 (111) -
Page 30: Supporting Raupex Pipe
7.9 Supporting RAUPEX Pipe 7.10 Supporting EVERLOC+ Fittings RAUPEX pipe should be installed so that it is aligned and stable. Supports and clamps shall not be placed directly on the EVERLOC+ - Standard Copper Tube Size (CTS) hangers, including clevis and loop fitting, multi-port tee or compression sleeve. -
Page 31: Kink Repair
7.14 Pressure Testing RAUPEX pipe is flexible and resists kinking even at temperatures well REHAU has a detailed pressure test procedure for testing a REHAU below freezing. If the pipe does become kinked, flow may be PEXa piping system as set forth below. -
Page 32: Testing System Flow
Obtain proper test fittings that consist of a 1/2 in. MPT adapter drain water from pipes. that will connect to the FIREPEX sprinkler fitting, a flow control - If any repairs or corrections are necessary, depressurize the system valve, a pressure gauge, a sprinkler test orifice and a 30-gallon before proceeding. -
Page 33: Maintaining The System
7. Determine the number of gallons in the buckets. Determine the number of gallons of water in the buckets after 60 seconds of water flow. This value represents the amount of flow in the system in gallons per minute (GPM). 8. - Page 34 The information contained herein is believed to be reliable, but no representations, guarantees or warranties of any kind are made as to its accuracy, suitability for particular applications or the results to be obtained therefrom. Before using, the user will determine suitability of the information for user’s intended use and shall assume all risk and liability in connection therewith. © 2019 REHAU...
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