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Sr 50 2010 Code of Practice for Building Services Part 1 Domestic Plumbing&Heating

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SR-50-2010-CODE-OF-PRACTICE-FOR-BUILDING-SERVICES-PART-1-DOMESTIC-PLUMBING&HEATING.pdf
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    Draft for Public Comment Number   SR 50-1:2010 Title   Code of practice for building services – Part 1: Domestic plumbing & heating   This document specifies the requirements for the design, installation, commissioning & maintenance of plumbing and heating systems for domestic buildings. Enquiry period: 28 th  May 2010 to 27 th  August 2010 Readers are warned that this draft is subject to ongoing development and change Please send your comments on the comments sheet available on www.NSAI.ie to: gay.moran@nsai.ie  or NSAI 1 Swift Square, Northwood, Santry Dublin 9  pr SR 50-1:2010.5 (E) Draft 5 NSAI/TC 31 Building Services Commitee Date: 2010-05 pr SR 50-1:2010.5  Code of practice for building services — Part 1 — Domestic plumbing and heating     pr SR 50-1:2010.5 (E) 3 Contents Page   Foreword ............................................................................................................................................................. 7   Introduction ........................................................................................................................................................ 7   1 Scope ..................................................................................................................................................... 8   2 Normative references ........................................................................................................................... 8   3 Terms and definitions......................................................................................................................... 11   4 Cold water supply systems ............................................................................................................... 22   4.1 Overview .............................................................................................................................................. 22   4.1.1 System start and end.......................................................................................................................... 22   4.2 Types of system .................................................................................................................................. 22   4.3 Design criteria ..................................................................................................................................... 22   4.4 Mains water supply systems and fittings ......................................................................................... 23   4.4.1 Location ............................................................................................................................................... 23   4.4.2 Materials .............................................................................................................................................. 23   4.4.3 Break tank and booster systems ...................................................................................................... 26   4.5 Cold water storage cisterns ............................................................................................................... 27   4.5.1 General ................................................................................................................................................. 27   4.5.2 Types of cisterns ................................................................................................................................ 27   4.5.3 Storage quantities, people and appliances ...................................................................................... 28   4.5.4 Storage location .................................................................................................................................. 28   4.5.5 Inter-connected cold water storage cisterns ................................................................................... 29   4.5.6 Legionnaires’ disease considerations.............................................................................................. 29   4.6 Cold water supply systems and fittings ........................................................................................... 29   4.6.1 Supplied from storage ........................................................................................................................ 29   4.6.2 Pumped systems ................................................................................................................................ 29   4.6.3 Noise considerations and airlocks ................................................................................................... 30   4.6.4 Materials .............................................................................................................................................. 31   4.6.5 Terminal fittings .................................................................................................................................. 34   4.6.6 Water conservation ............................................................................................................................. 39   4.6.7 Meters .................................................................................................................................................. 40   4.7 Reclaimed water systems .................................................................................................................. 43   4.7.1 Protection of potable water supply ................................................................................................... 43   4.7.2 Contamination of reclaimed water .................................................................................................... 44   4.7.3 Design considerations ....................................................................................................................... 45   4.7.4 Reclaimed water treatment ................................................................................................................ 45   4.7.5 Reclaimed water uses ........................................................................................................................ 46   4.8 Commissioning and handover .......................................................................................................... 46   4.9 Schedule of maintenance .................................................................................................................. 46   5 Hot water supply systems ................................................................................................................. 47   5.1 General ................................................................................................................................................. 47   5.2 Types of systems ................................................................................................................................ 47   5.2.1 Storage ................................................................................................................................................. 47   5.2.2 Vented .................................................................................................................................................. 47   5.2.3 Unvented .............................................................................................................................................. 47   5.3 Design criteria ..................................................................................................................................... 48   5.3.1 Secondary distribution systems ....................................................................................................... 48   5.3.2 System components ........................................................................................................................... 48   5.3.3 Open vent pipe .................................................................................................................................... 48   5.3.4 Circulating pump ................................................................................................................................ 49   5.3.5 Valves and taps ................................................................................................................................... 49  
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