Viega PEX Water Systems Installation Manual The global leader in plumbing, heating and pipe joining systems
Welcome Viega, heritage of quality, vision for the future Viega’s heritage of superiority demands nothing but the best for our customers. Engineered to be efficient, Viega products perform at the highest possible level of quality, providing confidence and peace of mind. Viega is the only manufacturer to offer press systems in multiple pipe joining materials, including polymer.
Contents 1 Introduction 10 System Sizing and Calculations . . . . . . . 21 1.1 Viega PEX solutions. . . . . . . . . . . . . . . . . . . . 5 1.2 Viega PEX system concepts. . . . . . . . . . . . . 5 2 Codes, Standards and Certifications 2.1 Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3 Certifications. . . . . . . . . . . . . . . . . . . . . . . . . 2.4 Specifying Viega PEX Systems. . . . . . . . . . .
16 Fastening the Viega PEX System 16.1 Wood frame construction . . . . . . . . . . . . . 46 16.2 Steel construction. . . . . . . . . . . . . . . . . . . 46 16.3 Supporting ViegaPEX Ultra tubing. . . . . . . 47 16.4 Noise and water hammer in PEX systems. . . 48 16.5 Shower valves. . . . . . . . . . . . . . . . . . . . . . 48 16.6 Electrical grounding. . . . . . . . . . . . . . . . . . 48 16.7 Expanding foams . . . . . . . . . . . . . . . . . . . 48 16.8 Fire Stop compounds . . . . . . . . . . . . . . . .
1 Introduction 1.1 Viega PEX solutions 1.2 Viega PEX system concepts Viega PEX systems are the most complete potable water solutions available on the North American market. With tubing, fittings and distribution manifolds, Viega provides everything you need for a total plumbing system that is not only easy to install but also helps reduce energy costs and water waste. Viega provides the highest-quality PEX tubing with the best UV and chlorine ratings in the industry.
2 Codes, Standards and Certifications 2.1 Codes NSF International The Viega PEX system is accepted by the following model codes for use in potable hot and cold water distribution systems. ANSI/NSF 14: Plastics Piping System Components and Related Materials — This standard establishes minimum physical and performance requirements for plastic piping components and related materials. These criteria were established for the protection of public health and the environment.
cNSF®us pw-G — Product meets Zero Lead listing meeting California AB 1953 and Vermont Act 193 CSA B137.5 — This standard specifies requirements for thermoplastic pressure piping. It includes reference publications, definitions, abbreviations, general requirements for materials and manufactured pipe and fittings, relevant test methods, and marking requirements. NSF U.P. Code — Product meets requirements of the Uniform Plumbing Code™.
3 Viega PEX Installation Methods There are three installation methods that Viega recommends to help enhance your water distribution systems performance by reducing water waste and hot water delivery times. These methods consist of the home run, combination and branch and tee systems. The following sections provide information to help select the best system based on the application. 3.
3.3 Branch and tee This method of plumbing is commonly referred to as a conventional plumbing system or branch-andmain systems. This system uses a large-diameter “main” supply line for both hot and cold water supplies that runs throughout a structure to or near each fixture group, with smaller “branch” lines teeing off the main to supply each fixture.
4 Viega Manifolds Viega offers several different manifolds to meet a variety of applications, whether it is a parallel water distribution system or combination installation. To maintain your warranty and be code compliant, use only Viega-approved fittings to connect ViegaPEX Ultra tubing to the ManaBloc. 4.1 Viega manifold markings Viega polymer manifolds must be protected from UV exposure, which can damage them.
5 Viega PEX Press Fittings Viega PEX Press fittings are available in Zero Lead Bronze and polymer and include a factoryassembled, stainless steel sleeve with three viewing holes and a tool locator ring to ensure a proper press connection.
5.4 PEX Press tools 5.4.1 PEX Press hand tools The Viega PEX Press connection must always be carried out with the aid of a Viega PEX Press tool. The hand tool incorporates a forced compression mechanism to complete a secure connection each time. A ratchet inside the tool prevents the tool from being opened until the proper force has been applied to the press sleeve. A safety release screw allows the tool to be opened at any time, but any connection made without full tool compression must be repressed.
5.5 Making a Viega PEX Press connection with hand tool 5.5.1 Trimming and inserting the tubing 1 2 4 3 1. Square off tubing to proper length. Uneven, jagged or irregular cuts will produce unsatisfactory connections. 2. If using FostaPEX tubing, insert into prep tool, push and turn until no resistance is felt. If using ViegaPEX Ultra, continue to Step 3. 3. Insert PEX Press fitting with attached sleeve into tubing and engage fully. 4. Ensure full tubing insertion at view holes in attached press sleeve.
6 Viega PEX Crimp Fittings Viega PEX Crimp fittings are in metallic or polymer configurations. The following design criteria make Viega PEX Crimp fittings ideal for use in potable water applications. Use only ASTM F1807 copper crimp rings and full-circle crimp tools with Viega PEX Crimp fittings. • Excellent strength properties • Corrosion resistant • Fast installation NOT for use with FostaPEX tubing. All Viega PEX tubing, fittings and manifolds are NSF certified for use in potable water systems. 6.
6.4 The Viega PEX Crimp hand tools The Viega PEX Crimp connection must always be carried out with the aid of a Viega PEX Crimp tool. There are multiple configurations of Viega PEX Crimp tools that are ideal for tight spaces and awkward locations. The compression of the tool also allows for crimp connections to be made in temperatures as low as -30°F. A caliper (GO/NO GO gauge) is provided to check the calibration of the crimp tool.
6.5 Making a Viega PEX Crimp connection 1 2 3 4 1 5 90° 6 /8” to ¼” RING SIZE MINIMUM MAXIMUM ⅜" 0.580" 0.595" ½" 0.700" 0.715" ¾" 0.945" 0.960" 1" 1.175" 1.190" Table 6.1 Crimp Diameter Dimensions. Crimp outside diameters should fall within these dimensions when measured with a micrometer or caliper. 1. The tubing should be cut squarely and evenly without burrs. Uneven, jagged or irregular cuts will produce unsatisfactory connections. 2.
7 ViegaPEX Ultra Tubing 7.2 Tubing markings ViegaPEX Ultra tubing is marked every five feet with the following representative information. See Table 7.1. Print Line Markings Length Marker 000 feet Company Viega Product Name ViegaPEX™ Ultra Nominal Tubing Size ½" Standard Dimension Ratio Tube Size SDR 9 CTS (copper tube size) Material Designation Code PEX 5306 Temperature & Pressure Rating 100 psi @ 180F 160 psi @ 73F NSF Listing (Potable) NSF Chlorine Listing cNSF®us-pw CL5 7.
8 Viega FostaPEX Tubing Bend Radius: •F ostaPEX tubing can be bent to a radius of 3.5 times tubing outer diameter with the use of a Viega tubing bender. Not for use with PEX Crimp fittings. 8.2 Tubing markings Viega FostaPEX tubing is the ideal companion for the Viega PEX plumbing system. This tubing can be easily bent by hand like the ViegaPEX Ultra tubing but holds its shape after bending (combining the benefits of both rigid and flexible tubing).
9 Viega PEX System Design and Sizing 9.1 ManaBloc Proper water distribution line sizing to each fixture The general sizing information shown may be appropriate for many ManaBloc installations. These recommendations are based on flow rates of typical fixtures that require 8 psi residual pressure. This is crucial for overall system performance.
9.2 Combination systems 9.3 Branch-and-tee systems PEX combination systems can be sized in a similar manner as a typical branch-and-tee system. Refer to your local or model plumbing code for the required tube and manifold sizing based on the system demand (Water Service Fixture Units, WSFU). If low service pressure is present, Viega provides the equivalent feet of PEX tubing factors for PEX fittings to ensure any additional pressure drop is accounted for in your design.
10 System Sizing and Calculations 10.1 General Viega PEX systems should be designed following standard plumbing engineering practice. Follow local codes to determine minimum tubing size and required fixture pressures. Pressure drop through fittings can be estimated from the charts below. Values are expressed in equivalent length of PEX, so add the values for the relevant fittings to the length of tubing in the run, and then determine the total pressure drop from the charts on the following page.
10.3 ViegaPEX Ultra tubing 10.3.1 Flow Velocity Table Flow Velocity ft/sec Flow Rate GPM ⅜ ½ ¾ 1¼ 1½ 0.5 1.7 0.9 0.75 2.5 1.4 0.7 1.0 3.3 1.8 0.9 0.5 1.5 5.0 2.7 1.4 0.8 0.6 2.0 6.7 3.6 1.8 1.1 0.7 0.5 2 Velocity < 0.5 ft/sec 2.5 8.3 4.5 2.3 1.4 0.9 0.7 3.0 10.0 5.4 2.7 1.6 1.1 0.8 3.5 6.3 3.2 1.9 1.3 0.9 0.5 4.0 7.2 3.6 2.2 1.5 1.1 0.6 4.5 8.1 4.1 2.5 1.7 1.2 0.7 5.0 9.1 4.5 2.7 1.8 1.3 0.8 6.0 10.9 5.4 3.3 2.2 1.6 0.9 7.
10.3.3 Velocity limits 10.3.2 Pressure Loss Table 60°F (16°C) Water Flow Rate GPM Pressure Loss PSI/ 100 ft of Pipe ½ ¾ 1 1¼ 1½ 0.5 ⅜ 2.0 0.75 4.1 1.0 7.0 1.6 1.5 14.9 3.4 2.0 25.4 5.8 1.1 2.5 38.5 8.7 1.6 3.0 53.9 2 12.2 2.3 16.2 3.0 4.0 20.8 3.9 1.1 4.5 25.8 4.8 1.4 5.0 31.4 5.9 1.7 6.0 44.0 8.2 2.4 7.0 10.9 3.2 1.2 8.0 14.0 4.1 1.6 9.0 17.4 5.1 1.9 10.0 21.1 6.2 2.3 1.0 11.0 25.2 7.4 2.8 1.2 12.0 29.6 8.8 3.3 1.5 13.0 34.3 10.1 3.
11 Water Service Installation 11.1 Below grade and service line ViegaPEX Ultra and FostaPEX tubing may both be used underground and for water service piping. When running lines underground, it is important to provide a stable, continuous trench base to support the tubing. Always allow sufficient slack when tubing is laid in trenches. Snake the tubing slightly side-to-side to provide for contraction due to temperature change. Do not use blocking to support tubing.
11.2 Foundation penetration 11.4 Concrete Where service lines penetrate foundation or basement walls, to prevent shearing or pinching off of the tube when backfill below the tubing settles, plastic tubing must be properly sleeved. ViegaPEX Ultra and FostaPEX tubing may be run within concrete slabs. All penetration points must be sleeved to prevent tubing damage (entry/exit points, expansion joints, etc.). Penetrations in walls, etc., may be sealed with silicone caulk. Do not use oil-based caulk.
11.6 Protecting ViegaPEX Ultra tubing Protect tubing and fittings from UV exposure. Due to the nature of slab-on-grade installation, tubing and fittings may be exposed to UV light for unspecified periods of time. To prevent damage from UV exposure, all ViegaPEX Ultra tubing and polymer fittings shall be protected with an opaque covering (black plastic polyethylene bag or sheeting) immediately after they have been installed.
12 Installing the ManaBloc Valve Key Internal Divider Plate Hot Water Supply Inlet Hot Port(s) Cold Port(s) Port Valve Cold Port(s) Cold Water Supply Inlet or Outlet Plastic Mounting Bracket 12.1Overview and carton contents Additional package contents include: • Valve T-Handle • Instruction Sheet/Drill Guide • Port Labels 12.2 Location Before installing the ManaBloc, review the following instructions. NOTE: The ManaBloc is much like an electrical breaker box.
b. When the ManaBloc is mounted beside the water heater and is connected with tubing incorporating a horizontal flow, there shall be at least 18" of developed tube length. Mounting the ManaBloc within eight feet of developed tube length of the water heater will minimize delivery time of hot water to individual fixtures. The ManaBloc may be mounted closer than 12" to the hot water source (tank) if it does not exceed the minimum allowable vertical and horizontal spacing outlined in this section. c.
12.3 Draining the ManaBloc unit If the ManaBloc system has been filled with water and there exists the possibility that the ambient temperature will drop close to or below 32°F (0°C), the ManaBloc unit MUST be drained to prevent irreparable damage. The process of draining involves loosening and removal of one or more supply line connections and two distribution lines from the ManaBloc. If a main inlet/outlet will not be used, it must be capped. (Use part number 53601.
12.4 Draining the ManaBloc system 1. Loosen and remove all of the supply line connections (or caps) and all of the distribution lines from the ManaBloc. 2. Remove the four attachment screws and withdraw the ManaBloc unit from its mounting. Note: Grasp the unit firmly before removing the last attachment screw to prevent the unit from falling and being damaged. 3. Completely drain the ManaBloc unit by inverting the unit several times until there is no water coming from any of the supply connections or ports.
13 Mounting the ManaBloc 13.1 Mounting the ManaBloc between studs Dimensions in these instructions are for 16" stud centers and must be adjusted for other stud spacing. Once the general location of the ManaBloc has been determined (see “12.2 Location” on Page 27), the ManaBloc may be mounted to a suitable surface between a pair of adjacent studs. For 16" stud spacing, the mounting straps (part number 45716) can simplify installation.
5. Standing in front of the wall, using a framing square or straight edge, mark the center line position of the top and bottom ports onto both studs. (See illustration.) 9. Push a small nail through the printed center line at one end of the Drill Guide (A). Push the nail into the cross formed where the top port mark intersects with the 1⅝" mark. Tap the nail into the stud to hold the Drill Guide in place. 10.
Drill ¾" holes for distribution lines, 1¼" holes for supply lines. 15. Reattach the ManaBloc to the mounting straps. 2. The top of the ManaBloc should be between four feet and six feet from the floor (but may be at any height provided that it maintains accessibility to all of the ports on the ManaBloc). Make a mark near the back of the inside of one stud that would represent the top of the ManaBloc. With a framing square or level, mirror the mark on the inside back of the other stud. 3.
13.3 Mounting the ManaBloc - surface mount 1. A suitable base for the ManaBloc can be constructed from a section of ½" or thicker plywood that is a minimum 22½" wide and slightly longer than the overall length of the ManaBloc. 5. Center the ManaBloc on the base both vertically and horizontally, as shown here. Attach the ManaBloc to the mounting base with four ½" or longer drywall or wood screws through the holes in the plastic brackets on the ManaBloc. DO NOT OVERTIGHTEN. 2.
13.4 Mounting the MiniBloc 1. For proper bracket spacing, measure distance between the center ribs of the first and last MiniBloc modules. Mark this distance on the selected mounted surface. 3. Use two wood screws per bracket, 1" or longer, to prevent misalignment. 3 1 1 2 3 4 5 6 4. Position bottom metal tie-rod into the bottom clip of the mounting brackets then roll manifold toward top clip. The MiniBloc may be mounted either vertically or horizontally. 4 2.
13.5 Mounting Viega PEX Press and PEX Crimp Polymer manifolds A 1 2 3 4 5 6 B 1 2 3 4 A Viega recommends using a minimum of two mounting brackets on manifolds with three ports and larger. 1. Measure the distance (A) between the first and last set of manifold ports (as shown). Using a straight edge, mark dimension (A) on mounting surface. Ensure the mounting surface is level and suitable to support the weight of the manifold filled with water. 2.
14 Installing Manifold Distribution Lines 14.1 Installing manifold distribution lines Run distribution lines continuously in the most direct route from the ManaBloc to the fixtures. A distribution line may contain a coupling or other fitting for purposes such as repairing a damaged section of tubing, handling a change of direction that cannot be made within the minimum bend radius guidelines, accommodating a fixture location change that requires a longer line or supplying a low-demand accessory (i.e.
14.2 Valve operation A ManaBloc system, which has valves on all of the outlet ports, does not require stop valves at the fixtures. However, the Authority Having Jurisdiction (AHJ) may require stop valves at some fixtures. Use the included red key handle to turn each port ON or OFF.
14.3.1 Port connections For PEX Press connections: The water supply to the ManaBloc and the port valves shall be turned off before attempting installation of press adapters. B A CAUTION Use only sealing elements supplied with the adapters. 1 2 1. Ensure sealing element (A) is in place and the tool locator ring (B) is present in its factory-installed position. B C 3 4 2. Square off tubing to proper length and insert the fitting fully into the end of the tubing as shown.
For PEX Crimp connections: A B C D 1 The water supply to the ManaBloc and the port valves shall be turned off before attempting installation of crimp adapters. CAUTION Use only sealing elements supplied with the adapters. CAUTION Not for use with FostaPEX® B C D 2 1. Ensure sealing element (A) is in place. 2. Slide the supplied swivel nut (D) and a crimp ring (C) onto the tubing and insert the barbed end of the fitting (B) fully into the end of the tubing as shown. 3 3.
For compression connections: NOT FOR USE WITH FOSTAPEX NOTE: The red ManaBloc valves designate hot ports and the blue valves designate cold ports. Make sure the distribution lines are connected to the correct ports (hot or cold). The use of color-coded ViegaPEX Ultra tubing reduces the possibility of cross connections. 1. For each distribution line, slide the Lock-In compression nut (A), Lock-In insert (B) and the plastic ferrule (C) onto the tubing in that order. (See illustration below.
14.4 Connecting distribution lines to fixtures There are a variety of male and female adapters, sweat adapters, turn out supports and stub out adapters to assist in terminating at the fixture. Refer to Section 17.1 though 17.4 of this guide or the Viega product catalog. 14.5 Water supply connections The main water supply shall be turned off before making water supply connections. The ManaBloc water supply connection uses a special 1" swivel ManaBloc transition fitting that seals with a sealing element.
15 Installing the ViegaPEX Ultra Tubing System 15.1 Handling ViegaPEX Ultra tubing The properties of ViegaPEX Ultra tubing make it easy to work with and install in most types of construction. Some care must be taken to prevent damage to the tubing before and during installation: • Use care to protect both ViegaPEX Ultra and FostaPEX tubing from physical damage during storage and installation. Keep the tubing away from sharp objects, open flames, etc., and do not place heavy objects on the tubing.
15.4 Removing Viega PEX connections Should a mistake be made, simply cut out the PEX fitting and replace with a new one. Do not reuse Viega PEX fittings 15.5 Repairs Sections of kinked tubing should be repaired by cutting out the damaged section and installing a repair coupling. PEX tubing systems should not be intentionally subjected to freezing. Do not use open torch or excessive heat to thaw PEX tubing. Tubing failure or damage can result.
15.8 Heaters, flues, vents and recessed lights Keep ViegaPEX Ultra tubing a MINIMUM of 12" vertically and 6" horizontally from sources of high heat such as gas flue vents, heating appliances or electric motors.
16 Fastening the Viega PEX System 16.1 Wood frame construction 16.2 Steel construction ViegaPEX Ultra and FostaPEX tubing are ideal for use in wood frame construction. The ability to bend the tubing around corners and obstacles greatly simplifies installation. This system eliminates the expensive and time-consuming use of fittings where tubing turns within a wall, and eliminates the potential fire hazard of soldering close to exposed framing members.
16.3 Supporting ViegaPEX Ultra tubing Use only plastic or plastic-coated tubing supports. Metal supports may damage tubing. In risers or vertical runs, ViegaPEX Ultra and FostaPEX tubing should be attached with suspension clips or an approved plastic insulator at each floor or ceiling penetration, and every four feet in between (see below). When running tubing, leave a small amount of slack between fasteners to account for tubing contraction. Note that ViegaPEX Ultra tubing will expand or contract 1.
16.4 Noise and water hammer in PEX systems As with all plumbing materials under some operating conditions, water hammer can occur in PEX plumbing systems. The inherent flexibility of ViegaPEX Ultra drastically reduces the magnitude of pressure surges compared with metallic plumbing materials. Damage to plumbing components in a PEX system due to these pressure surges is highly unlikely, although noise can sometimes result. Fortunately, there are solutions to minimize or eliminate water hammer noise.
Tubing fasteners perform two functions: providing support for the tubing and guiding the tubing during expansion and contraction. It is important to keep this in mind when installing fasteners. An expansion compensator will not be effective if the fasteners prevent linear movement of the piping system. Tubing sizes smaller than ¾" generally do not require expansion compensators with fittings and can easily be bent into loops and offsets to absorb linear expansion. Tubing sizes 1" and larger, refer to “16.9.
Compensation distance: To calculate the dimensions of the expansion compensation offset needed, use the following formula: L = C√OD x ΔL Where: L = length of compensation distance C = 12 (PEX material specific constant) OD = outer tubing diameter (⅛" + nominal tube size) ΔL = change in length from temperature change Corner expansion offset: Where piping takes a corner after a long straight run, a simple 90° elbow in the piping will allow for the absorption of expansion.
Z-type expansion offset: The Z-type expansion offset integrates two 90° elbows that form a “Z” pattern. With this type of configuration ½ of the “L” dimension is applied to the center area of the “Z” (represented as L1 in the table and illustration) while ¼ of the “L” dimension would be applied to each of the top and bottom areas (represented as L2). Calculate the necessary L1 and L2 dimensions or use the chart below, which was figured using the maximum run for a single expansion compensator (50 feet).
U-type expansion offset: The U-type expansion loop integrates four 90° elbows that form a “U” pattern. With this arrangement ⅕ of the “L” dimension is applied as the width (represented as L3) while ⅖ of “L” is applied as each leg in the other dimension (represented as L4). Calculate the necessary L3 and L4 dimensions or use the chart below, which was figured using the maximum run for a single expansion compensator (50 feet). L = 20.7" L3 = ⅕ (L) L3 = 20.7"/5 = 4.14" LT L3 = 4.14" L4 = ⅖ (L) L4 = 2(20.
FostaPEX: FostaPEX tubing has a fully dimensional PEX wall with an additional outer layer of aluminum and polyethylene. As a result of these extra layers, FostaPEX expands considerably less than that of standard PEX tubing and slightly more than copper tubing (0.16" per 100' per 10°F). D An approved method for expansion absorption when using FostaPEX is through the use of a coiled loop expansion compensator (at least every 50 feet).
To Fixture A hot water circulation system can be incorporated into most plumbing systems and works by constantly (or periodically throughout the day on a timer) circulating hot water through the main hot supply line of your plumbing system. To Fixture 16.10 Domestic hot water circulating systems Hot Water Supply Hot Water Supply This is done by using a return line at the end of the main hot supply line, and a low-flow pump (usually near the hot water tank).
17 Installing Viega PEX Fittings 17.1 Stub out options The Viega PEX system includes fittings to accommodate most plumbing needs. Stub outs are available for a variety of fixture situations, as well as fittings and valves to connect to other plumbing materials and fixtures. Drop-ear elbows provide a ½" or ¾" F NPT threaded connection at a wall or floor penetration as well as a flange for securing the fitting. Drop-ear bend supports allow ViegaPEX Ultra tubing to be directly stubbed out of a wall.
Half-inch snap-in bend supports are also available with a metal mounting bracket (sold separately) for quick and easy stub outs with ½" ViegaPEX Ultra tubing. Seven stub out locations and numerous nail holes make this a versatile option for stubbing out any number of lines or supporting tubing near manifolds. 17.2 Copper connections Fittings are available to adapt ViegaPEX Ultra tubing to both copper tubing and copper fittings. Copper tubing adapters slip over copper tubing to provide a sweat connection.
Heating Like standard (leaded) alloys, heating of the Zero Lead solder joint should be done evenly and gradually using an appropriately sized tip with constant movement of the flame over the joint. Be careful not to overheat the Zero Lead alloy while making a solder joint. Overheating will result in a brown discoloration of the metal, which is an indication that flux has burned out of the solder joint, potentially causing incomplete solder coverage.
17.4 Valves In-line ball valves are available for use with ViegaPEX Ultra tubing. These brass finish valves may be used anywhere an in-line valve is needed. Stop valves have ⅜" or ½" PEX inlets and ¼" CTS (⅜" O.D.) riser outlets and are available in both straight and angled versions depending on installation requirements. Only plastic ferrules should be used when connecting to PEX tubing/risers. Brass ferrules are for use with copper tubing. 58 ¼-Turn Straight Stop Valve PEX Press to ⅜" O.D.
Viega Water Closet Connections Tighten fixture nut hand-tight plus an additional ¼-turn. Check all connections for leaks. DO NOT OVERTIGHTEN. Viega Riser Connections Thread fixture nut onto fixture shank. Tighten fixture nut hand-tight plus an additional ½-turn. Slide compression nut and supplied plastic ferrule over tube as shown. The long taper of the ferrule goes toward the valve. Tighten compression nut according to valve manufacturer’s recommendations.
18 Pressure Testing Viega PEX Systems 18.1 General Upon the completion of installing a Viega PEX plumbing system, a hydrostatic (potable water) pressure test shall be conducted. If potable water is not available, or the potential for a freezing condition exists, pneumatic* (air or nitrogen) testing and/or the use of an RV antifreeze** solution are also acceptable methods for pressure testing.
18.2 Air testing Air testing of a Viega PEX plumbing system shall use the checklist provided to ensure safety. It is the responsibility of the installer to read and understand the below pressure testing criteria and all safety precautions. Compressed air can store extremely high energy as compared to compressed water systems. Failure to follow these steps could result in personal injury, death and/or property damage.
19 System Disinfection 19.1 General Local codes may require system disinfection. When no other method is available, follow the time limitations and exposure levels shown below. 1. Use a chlorine solution and one of the exposure durations listed below: Concentration Period Authority 200 PPM 3 hours IPC/UPC® 50 PPM 24 hours IPC/UPC® 2. Mix the disinfection solution thoroughly before adding it to the system. 3. The chlorine solution must reach all parts of the system.
20 Warranty VIEGA® LLC PEX WATER SYSTEMS LIMITED WARRANTY Subject to the conditions and limitations in this Limited Warranty, VIEGA LLC (Viega) warrants to the owner of applicable real property in the United States (including its territories) and Canada that the components in its PEX Plumbing Systems (as described below) when properly installed by licensed plumbers in potable water systems, under normal conditions of use, shall be free from failure caused by manufacturing defects for a period of twenty-five
This document subject to updates. For the most current Viega technical literature please visit www.viega.us. Click Services -> Click Electronic Literature Downloads -> Select Product Line -> Select Desired Document *Zero Lead identifies Viega® products meeting the lead free requirements of NSF 61-G through testing under NSF/ANSI 372 (0.25% or less maximum weighted average lead content). Viega LLC 100 N. Broadway, 6th Floor Wichita, KS 67202 Phone: 1-800-976-9819 Fax: 1-316-425-7618 www.viega.
