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2903 Wavin Hep2o IG:Installer Guide

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2903 Wavin Hep2o IG:Installer Guide Push-fit Plumbing System Installer Guide BS 7291 ED V T A RO C PP DU PRO July 2009 Contents Page Introduction 3 Introduction, Approvals 4 Features & Benefits, Installation 5 Performance, System Assembly Basics 6-7 Pipe Selection, Standard Pipe, Barrier Pipe, Pipe Specification, Straight Lengths, Coils 8-9 Pipe Cutting 10 Jointing Standard 11-12 Applications Sitework 13-15 Cabling through Joists 16-18 Pipe Support 18 Pipe Installation in Exposed Locations 18 Pipe Installation in Concealed Locations 19 Pipes through Walls and Floors 19 Laying of Pipe in Floor Screeds 19 Pipes Adjacent to Metalwork 19 Piping Noise Reduction 20 Manifolds/Microbore Plumbing 21 Underfloor Heating Pipe 22 Routabout 23 Conduit Systems 24-27 Installation Recommendations ® 28-29 Hep2O Within Dry Lined Walls ® 30 Hep2O Within Internal Drywall Systems ® 30-32 Hep2O Within Timber Framed and Steel Framed Buildings Compatability 33-41 Metric Copper Pipe, Using Compression, Fittings, Adjacent & Connections to Capillary Joints, Imperial Copper, Chrome Plated Copper or Stainless Steel Pipe, Incoming Service Pipe, Brass Spigots, Acorn System, Plastic Pipes, Steel pipes and Threaded Bosses, Connection to Appliances, Draw-off Taps, Ancillaries (Pumps, Valves, etc.), Storage Vessels and Radiators, Boilers and Heaters System 42-43 Fitting Detachment, Lubrication Modifications 44 Alterations General 45 Thermal Insulation Information 45 Freezing for Maintenance/System Modification ® 45 Painting Hep2O 45 Use of Corrrosion Inhibitors 45 Antifreeze 46 Electrical Safety 46 Woodworm/Timber Treatment Special 47 External Installations Precautions 47 Vermin 47 Chlorine Testing 48 Pressure Testing Special 49 Boats Applications 49 Caravans 49 Exhibitions 49 Portable Buildings (site cabins, toilets etc.) 50 Agricultural and Horticultural Use 50 Air Conditioning Systems ® 50 Where not to use Hep2O Handling & 51 Handling and Storage Storage Hints & Tips 52 Hints and Tips Fault Finding 53-54 Fault Finding Information 55 Advisory Service 55 Literature Service 55 Other Sources of Information Literature 2 ® The Hep2O Installer Guide for Flexible Push-Fit Plumbing Introduction The mark of a professional tradesman is that he understands and employs a wide 1 range of materials and systems to achieve the best possible solution to individual installation situations. The notes in this Installer Guide are intended to assist professional plumbers to obtain the best results from using flexible push-fit plumbing, enhancing good plumbing practice. It is not sufficient to simply replace item for item, pipe length for pipe length, as this approach will not derive the maximum benefit from the system. It is necessary to design the system from the outset, embracing the benefits the system offers to achieve maximum benefits. ® Enhanced Hep2O flexibility means an opportunity to develop further skills when planning and installing plumbing, offering a comprehensive range of pipes and fittings to meet plumbing requirements. Greater pipe flexibility, long coil lengths and guaranteed joint performance, enables installations to be completed with fewer joints minimising system costs. Pipes can be cabled into position avoiding the awkward manoeuvring ® associated with rigid straight lengths. Hep2O fittings are designed to ® accept copper as well as Hep2O pipe, enabling systems to be mixed if required. ® Hep2O is a tried and tested system, which has been in use in the UK for over 25 years. Approvals ® Hep2O is manufactured and kitemarked to Class S of BS 7291, Parts 1 and 2 and is manufactured within a BS 7291 Quality Management System which satisfies BSEN ISO9002 requirements. ® Hep2O Barrier Pipe is covered by Agrément Certificate 92/2823 to Class ‘S’ of BS 7291. ® Hep O Is listed in the Water Fittings and Materials ED 2 V T A RO C PP DU Directory - Listing Number 0112066. PRO ® Hep2O is suitable for use in domestic water distribution and central heating systems including pressurised systems and combination boilers in accordance with Table No. 1. It may also be used in buildings other than dwellings providing the service conditions are not exceeded. Table No. 1 Peak Life Cycle Operating Temperatures/Pressures 20°C 30°C 40°C 50°C 60°C 70°C 80°C 95°C Short Malfunction at 114°C Safe pressures: Bar 12 11.5 11 10.5 9 8 7 6 3 psi 174 167 160 152 131 116 102 87 43.5 Head of water (m) 120 115 110 105 90 80 70 60 29 3 ® The Hep2O Installer Guide for Flexible Push-Fit Plumbing ® Hep2O has a minimum design life expectancy of 50 years provided the system is installed in accordance with the manufacturer’s recommendations. These recommendations include service temperatures and pressures. Peak life cycle operating temperatures / pressures are given in Table No. 1. As a result of its rigorous Quality Management Programme Wavin offer a 50 year guarantee ® against defects in materials or manufacturing of all Hep2O pipe and fittings. Features and Benefits ® Hep2O has evolved over 25 years to offer improved installation advantages, whilst maintaining proven long term performance benefits. ® Flexible pipe work and joint security are the key features of Hep2O . Pipe flexibility in conjunction with straight coils in SmartPackTM dispensers enables pipe to be cabled into position, with fewer joints, ® minimising system costs. The Hep2O fitting incorporates a high integrity grab wedge and robust pre-lubricated ‘O’ ring, offering the installer smoother pipe insertion and lower jointing forces. The re-usable grab wedge gives reliable jointing even when the fitting has been dismantled and reassembled. Installation ® Hep2O introduces a new flexibility for the professional to exploit during installation. Cabling Ability Less Jointing Low Wastage Measure and Cut High Resistance to Rotatable Fittings In-situ Impact Easier Handling Less Risk Jointing, No Naked Flame 4 ® The Hep2O Installer Guide for Flexible Push-Fit Plumbing Performance ® Once installed Hep2O offers considerable benefits over traditional rigid systems. 1 No Scale Build-up No Burst Pipes Quieter Cool to the Touch Solder Free Corrosion Free System Assembly ® In skilled hands the flexible Hep2O plumbing system guarantees professional sitework. 5 Basics Pipe Selection ® Hep2O pipe is manufactured as two types, Standard and Barrier. Their correct applications are as follows:- Standard Pipe Standard pipe is suitable for domestic hot and cold water services and heating applications. As standard pipe may allow the ingress of minute amounts of oxygen molecules through the pipe wall when used for heating a suitable inhibitor (Sentinel or Fernox MB1) should be used. Barrier Pipe Barrier pipe is designed for central heating systems and incorporates an oxygen barrier to inhibit oxygen permeation. The use of inhibitors with barrier pipe is still recommended as corrosion can occur in all types of system regardless of pipe material. Barrier pipe may be used for domestic hot and cold water services. ® Both Hep2O Standard and Barrier Pipe is accepted by British Gas/ Scottish Gas Central Heating Care Contracts. Note: ® Hep2O pipe is not suitable for the conveyance of gas. Pipe Specification The 15mm, 22mm and 28mm pipe is available in straight lengths and coils. The 10mm pipe is only supplied in coils. Availability is clearly shown in Table 2 (see page 7). Straight Lengths ® Straight lengths of Hep2O are not rigid, and are as flexible as coiled pipe. Straight lengths are primarily for exposed pipework where neatness is important or for use where only short lengths are required. Coils ® Coiled Hep2O is primarily suited to ‘first fix’ work on site, where minimal pipe jointing is desirable. ® Hep2O is available in straight coils, in SmartPackTM dispensers. Unlike other forms of coiled plastic pipe, ® Hep2O does not tend to return to its coiled state when uncoiled for installation. ® Hep2O straight coiled pipe has a tendency to remain straight when uncoiled with no loss of flexibility. ® ® Hep2O Pipe in Pipe System incorporates Hep2O Barrier Pipe in a pre-sheathed conduit ready for underscreed installation, saving time, effort and complies with current regulations. 6 Basics Table No. 2 Standard and Barrier Pipe Lengths 10mm 15mm 22mm 28mm Straight Lengths 3m 6m Coils 2 25m 50m 100m Pipe in Pipe 25m 50m G Cut Length Standard and Barrier Straight Cut Lengths. G Standard Straight Coiled Pipe Straight Coiled Lengths in SmartPackTM Dispenser. G Barrier Straight Coiled Pipe Straight Coiled Lengths in SmartPackTM Dispenser. G Pipe in Pipe System ® Hep2O Barrier Pipe in Blue or Red Conduit. 7 Basics Pipe Cutting Basic Jointing/Pipe Cutting ® When cutting Hep2O pipe it is essential to use the correct tools. Only the recommended cutters as shown in the current trade price list (HD74, HD75, HD77 or HD78) should be used. Do not use a hacksaw. (Figure No. 1) Before making a joint ensure the pipe end is clean, cut square and free from burrs and surface damage. (Figure No. 2). Place the pipe in the jaws of the cutter and apply pressure, the pipe should be rotated whilst maintaining the pressure until the pipe is severed. (Figure No. 3) DON’T Figure No. 1 Do not use a hacksaw to cut ® Hep2O pipe. DON’T Figure No. 2 Do not use damaged pipe. Ensure pipe is free from burrs and surface damage. To ensure adequate insertion, essential for a secureV joint, cut the pipe square at one of the cutting/insertion marks ‘ ’. The distance between these marks indicates full socket depth (Figure No. 3). Figure No. 3 When it may not be possible to use the ‘V ’ marks eg. badly lit areas, jointing copper pipe or where an exact length is required, mark the insertion depth on the pipe using a pencil or suitable marker pen. The correct insertion depth can be obtained by holding the pipe against the fitting or by measuring with a rule, as shown (Figure No. 4). The depth of insertion is shown in Table 3 at the end of this section. 8 Basics Pipe Cutting cont.
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