Meter and Sub- Metering Technical Specifications 24 July 2015
Table of Contents 1. Introduction... 3 2. Metering Technical Specifications... 3 2.1 Water Meter Types... 3 2.2 Water Service and Meter Sizing... 3 2.3 Water Meter Serial Numbering... 3 3. Sub-metering Technical Specifications... 4 3.1 Application and Approval... 4 3.2 Meters... 4 3.2.1 Master meter... 4 3.2.2 Sub-meters... 4 3.3 Complex Design... 6 3.3.1 Horizontal Complexes... 6 3.3.2 Vertical Complexes... 6 3.3.3 Mixed Use Complexes... 6 3.4 Automatic Meter Reading... 7 3.4.1 Technical requirements... 7 3.4.2 Installation requirements... 7 3.4.3 Electrical requirements... 7 3.5 Enclosures... 8 3.5.1 Water sub-meter enclosures... 8 3.5.2 Water sub-meters In-ground... 8 3.5.3 Automatic meter reading enclosures... 8 3.6 Connectivity Audit... 9 3.6.1 Certification of work... 9 3.6.2 Asset handover to the City...10 TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 2 of 11
1. Introduction This document provides further additional detail on requirements contained in for Gold Coast Waters Network Development and Connections Policy and Procedure. This document sets out the City of Gold Coast metering and sub-metering technical requirements. 2. Metering Technical Specifications 2.1 Water Meter Types Please refer to either the Standard Drawings on the City s website or to the South East Queensland Water and Sewerage Design and Construction Code Accepted Civil IPAM List for the meter models currently accepted by the City. http://www.seqcode.com.au/products/ 2.2 Water Service and Meter Sizing The Developers Plumber or Hydraulic Consultant (as appropriate) is responsible for sizing the water meter and service to the property. Water meters installed within the Gold Coast shall be of the following diameter only: 20 millimetre 25 millimetre 40 millimetre 50 millimetre 80 millimetre 100 millimetre 150 millimetre 200 millimetre 250 millimetre 300 millimetre 2.3 Water Meter Serial Numbering Each mechanical meter installed within the City s boundaries must have an individual serial number specific to that meter and not to be repeated. The serial number must consist of two numbers identifying the year of manufacture (e.g. 2014 would be 14). The two letters specified below identifying the meters nominated size and an individual identification number not exceeding six numbers. Any water meters purchased for installation must meets these requirements. Meter Size DN20 DN25 DN40 DN50 DN80 DN100 Letter Identifier W X E HB HC HD TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 3 of 11
DN150 DN200 DN250 DN300 HF HH HI HJ 3. Sub-metering Technical Specifications 3.1 Application and Approval The City uses a standard application and approval process to manage the installation of sub-meters. Further to the Applicants Plumbing & Drainage application being lodged, a Sub-Meter Assessment Checklist must be completed in full and provided to The City prior to the sub-meters being inspected for connectivity. The Developer shall submit drawings and hydraulic plans to the City for approval and must include: location of each sub-meter in the complex the make and model of the proposed sub-meters detailed information regarding the sub meter assembly and arrangement sub-meter enclosure location and type and if applicable, details of any AMR equipment and location. The Developer must complete and submit an application for Water Meters to enable the installation of a master meter at the boundary of the complex (new developments). Installation of sub-meters shall not proceed until the City has approved the application. The approval of the sub-meters is conditionally linked to the connection approval. The Certificate of Classification shall not be issued until the installation of sub-meters and associated AMR system (if applicable) has been installed, commissioned and handed over to the City. 3.2 Meters 3.2.1 Master meter A master meter shall be installed at the property boundary of the complex or development to measure the water supply entering the property. The master meter is to be installed to the City standards and specifications at the expense of the Developer. The City will own the master meter and be responsible for its maintenance, verification, calibration and replacement. For developments constructed post 1 January 2008 pipes or any fittings between the master meter and the submeter assembly and beyond the sub-meter assembly shall remain the property of the building owner for maintenance and replacement. For developments constructed pre 1 January 2008 the pipes or any fittings and any AMR system after the master meter and including the sub-meter assembly and beyond shall remain the property of the building owner for maintenance and replacement. 3.2.2 Sub-meters 3.2.2.1 Sub-meter specifications All meters and sub-meters, location and type will require the City approval. TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 4 of 11
The Developer is responsible for the installation of sub-meters. The City s Plumbing and Drainage will conduct inspections to make sure the installation has been completed in accordance with the Plumbing and Drainage Act 2002 and AS/NZS 3500. All sub-meters shall be selected from the City's approved water meter list. All sub-meters shall be installed in the approved the City format. All sub-meters shall be installed in a common or public access area and have unique serial numbers. All sub-meters of the same size installed in a complex shall be the same make and model. Sub-meters shall be installed no higher than 1800 millimetres. All sub-meters shall be tagged. The tag shall be fixed to the pipework adjacent to the meter or attached to the meter and have the unit number and meter number displayed in permanent ink. The tag shall not interfere with any data recording equipment if applicable. All sub-meters shall be housed in an approved sub-meter enclosure or approved meter pit. 3.2.2.2 Cold water systems Sub-meters of 20 millimetres, or in some applications larger sizes if the hydraulic design prescribes, shall be installed within developments to measure individual units and common property water supply. For developments constructed post 1 January 2008, all sub-meters shall be installed within a development at the time of construction and shall be of the same make and model and have unique serial numbers. For developments constructed pre 1 January 2008, all sub-meters shall be installed within a development (following applications approval) and shall be of the same make and model and have unique serial numbers. 3.2.2.3 Hot water systems Where hot water is supplied through individual hot water systems there is no requirement to install a separate sub-meter for each hot water system. The hot water in this situation is measured through the cold water submeter. Where hot water is supplied from a communal hot water system, the system is required to be sub-metered. A sub-meter must be installed on the cold water intake of the communal hot water system and the hot water consumption will be billed to the Body Corporate as common property water consumption. 3.2.2.4 Recycled water systems Where developments are in a dual reticulation area, sub-metering of the recycled water supply is required. Sub-meters for measuring recycled water shall be installed in the approved format and selected from the City s approved suppliers list. Sub-meters measuring recycled water are required to be coloured purple/lilac. 3.2.2.5 Installation of sub-meters The Developer is responsible for installing the sub-meters. The City s Plumbing and Drainage section will conduct inspections to make sure installations have been completed in accordance with the Technical Specifications and Guidelines, Plumbing and Drainage Act 2002, AS/NZS 3500.1, and the City Plumbing and Drainage approved hydraulic plans. Where possible sub-meters shall be grouped together and in a location that is unrestricted at all times. Only licensed plumbers are permitted to install sub-meters in complexes. All work shall be carried out in compliance with all relevant Acts, regulations and by-laws and these technical specifications and guidelines. They should include the: Work, Health and Safety Act 2011 Electricity Supply Act 1994 AS3000 SAA Wiring Rules. TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 5 of 11
On completion of the sub-meter installation Gold Coast Water will carry out a connectivity audit to ensure each unit/lot/storey in the complex is supplied through one sub-meter only and the meter matches the description in the submitted as-constructed drawings. A Sub-meter Assessment Checklist shall also be submitted, completed in full (excluding sub-meter readings) with the request for a connectivity audit. The as-constructed drawings will include: sub-meter serial number and the description of the unit (unit number) supplied through this sub-meter meter size, make and model location of sub meters (i.e. enclosure one on ground level) make and model of any equipment attached to the meter (such as AMR) size and location of any AMR infrastructure such as aerials, cables and conduits etc. and date of installation. 3.3 Complex Design 3.3.1 Horizontal Complexes Within a horizontal complex development (group housing), sub-meters shall be installed at the property boundary in an accessible area to facilitate direct data acquisition, maintenance and replacement. In this situation sub-meters will be housed in City-approved meter boxes and shall not be installed in locations that pose a risk to the general public (that is, walkways) and the meter box lids shall have a non-slip surface. If the development is within a dual reticulated area (drinking and recycled water), sub-meters will also be required. Common property areas must also be sub-metered (that is, designated common areas such as recreation areas and common public toilets). 3.3.2 Vertical Complexes Vertical complexes (that is, high rise developments) shall have sub-meters grouped together and installed in an accessible common area to allow direct reading. The location of the water sub-meter enclosures shall be in a common or public area to allow access to the submeters for maintenance or replacement by the appropriate sub-meter owner. Vertical complexes will require a water sub-meter enclosure to house the sub-meters. In most cases, more than one water sub-meter enclosure will be required for each storey. If the sub-meters are within a fire cabinet enclosure the fire and safety rating shall not be compromised and the water sub-meter enclosure shall be adequately drained or bunded to prevent seepage into the infrastructure. If the development is within a dual reticulated area (drinking and recycled water), sub-meters will also be required. Common property areas must also be sub-metered (that is, designated common areas such as recreation areas and common public toilets). 3.3.3 Mixed Use Complexes Mixed use complexes (that is, mixed residential and non-residential) shall have sub-meters grouped together and installed in an accessible, common area to allow direct reading. The location of the water sub-meter enclosures shall be in a common or public area to allow access to the submeters for maintenance or replacement. TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 6 of 11
Mixed use complexes will require a water sub-meter enclosure to house the sub-meters. In most cases more than one water sub-meter enclosure will be required. If the sub meters are to be within a fire cabinet enclosure the fire and safety rating shall not be compromised and the water sub-meter enclosure shall be adequately drained to prevent seepage into the infrastructure. If the development is within a dual reticulated area (drinking and recycled water), sub-meters will also be required. Common property areas must also be sub-metered (that is, designated common areas such as recreation areas and common public toilets). 3.4 Automatic Meter Reading Where sub-meters cannot be installed in an accessible part of the development or complex due to security restrictions, automatic meter reading (AMR) technology will be required. The installation of an approved AMR system does not take away the requirement for sub-meters to be installed in common or public access areas to allow access to the sub-meters for maintenance or replacement. If the Developer is required to install an AMR system it must be a City approved type. Only AMR systems and suppliers approved by the City may be used, refer Standard Drawing 11-133 on the City s website. A twelve month warranty on all AMR components will be provided by the AMR manufacturer/supplier and also the approved technician s workmanship from the date of installation. Prior to the twelve month warranty period expiring, the City will inspect the system and if necessary advise the manufacturer/supplier of any defects which the approved technician will be required to rectify within a timeframe determined by the City. 3.4.1 Technical requirements The AMR system shall incorporate only one DER panel to be installed in an accessible location. The location requirements for the DER enclosure are the same as specified for the sub-meter enclosures. When an AMR system is used, all sub-meters and the master meter must be AMR linked to enable the meter reading data to be sent to the DER panel. 3.4.2 Installation requirements The AMR installation shall be provided by a qualified technician approved by the AMR provider and must take responsibility for all components of the AMR installation including but not limited to power supply cabling, meter installation and meter communication from the meter/s to the DER panel. The installation of the AMR does not remove the ability to enable a manual read of each sub-meter. The preferred data collection capacity for AMRs is 17,520 records (30 min. interval for one year) per unit. A minimum of three software licences per AMR/AMI system must be supplied to the City. The AMR and the sub-meter must be separable items. Even if they are supplied by the same manufacturer, allowance must be made for the replacement of either component with a similar product without the need to replace both components. This separation and replacement must be able to be performed in the field, without sending the equipment off site. For the future, it will eventually be required for AMR and AMI system separate items to be able to be reconnected or reconfigured remotely by the system supplier. A full set of sub-meter hydraulic and electrical as-constructed drawings must be submitted to the City in addition to those submitted as a part of the plumbing and drainage processes. 3.4.3 Electrical requirements The electrical installation of the AMR and connection to sub-meters shall be in accordance with AS3000, AS3008 and all relevant Australian Standards, supply authority regulations and statutes. TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 7 of 11
The City s electrical requirements shall be sent to the Developer on approval to install an AMR system. Standard Drawing 11-133 found on the City s websiteprovides the City s minimum requirement for AMR cabling and associated wiring and connections standards. 3.5 Enclosures 3.5.1 Water sub-meter enclosures The location of the water sub-meter enclosure is to be installed in a common or public access area. The enclosure shall be marked clearly Water sub-meters on the outside of the door. Where more than one submeter enclosure is installed, each enclosure shall have an ID number on the cabinet as shown in the standard drawing. The sub-meters may be installed in a fire cabinet with installation dimensions to be maintained. All enclosures shall be either bunded or drained to the stormwater system to manage seepage from maintenance events. All penetrations shall be sealed. A minimum area of two-square metres or an area of 1.5 metres x door width (whichever is greater) shall be provided directly at the enclosure for maintenance and customer interaction. The enclosure shall have adequate lighting without the need for additional aids such as ladders to read or maintain meters. Any enclosure door/s in a pedestrian pathway or high use area shall have a one point stainless steel quarter turn latch flush mounted. The enclosure material shall be either one millimetre thick steel or 1.5 millimetre 5251 or 5083 alloy aluminium, and powder-coated to suit building architecture. All external edges are to be rounded with all edges and corners accurately and neatly folded. Enclosure door/s shall have a hand operated one point stainless steel quarter turn latch to close the door and shall have lift off type plated brass hinges with stainless steel hinge pins. If a lock is fitted to the exterior door/s it needs to use a standard common C4 keyway cut to 34284. Any external enclosure shall be in accordance with water meter data reading enclosure construction. 3.5.2 Water sub-meters In-ground The sub-meter assembly shall be installed within a suitably sized prefabricated meter box with a non-slip lid. Bedding or soil shall not surround or cover any components within the meter box. The meter capsules reading dial shall be no more than 300 millimetre from the surface level. Installations in pavements must have a base support similar to standard hydrant and valve box support systems and they shall have a Lid that is certified to Class A of AS3996. Sub-meter assemblies shall not be installed in property driveways or within road pavements. 3.5.3 Automatic meter reading enclosures Any development that requires an AMR system will install an accessible enclosure to house the water meter data reading panel, the DER panel. The location of the water meter data reading enclosure is to be in a public access area. The water meter data reading enclosure shall be clearly marked Water meter data with a minimum lettering height of 25 millimetre and be permanently fixed in the centre to the outside of the door. TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 8 of 11
The meter reading data panel displays shall be installed no higher than 1800 millimetre and no lower than 1200 millimetre. A minimum area of two square metres or an area of 1.5 metres x door width (whichever is greater) shall be provided directly at the enclosure for maintenance and customer interaction. The enclosure shall have adequate lighting and shall not require additional aids such as ladders to maintain meters or obtain meter data. The enclosure shall be drained to prevent seepage into the infrastructure or into the building. Any enclosure door/s that are in a pedestrian pathway or high use area shall have a one point stainless steel quarter turn latch flush mounted. Enclosure doors shall have a locking system capable of exerting sufficient pressure to ensure proper contact of the sealing medium all around the door with lift off type hinges, chrome plated solid brass body (80 millimetre minimum length) with stainless steel hinge pins. A lock shall be fitted to the exterior door of the enclosure and the lock needs to use a standard common C4 keyway cut to 34284. The enclosure shall house a common 240-volt electrical power supply outlet for AMR system use within 300 millimetre of the meter read panel. The enclosure shall contain a draw wire back to a telecommunication connection point for AMR system use. The conduit shall be connected to the meter read panel. The enclosure shall be sufficiently ventilated and rated to IP65. The material of any external enclosure shall be either minimum two millimetre thick 316 grade stainless steel or three millimetre 5251 or 5083 alloy aluminium powder coated colour Beige AS 2700S-1996 (X43) or matched to suit building architecture. All external edges are to be rounded with all edges and corners accurately and neatly folded. 3.6 Connectivity Audit The City will conduct the connectivity audit following advice the installation has been completed in accordance with Plumbing and Drainage Act 2002, AS/NZS 3500.1 and with the approved hydraulic drawings. The connectivity audit will verify that: sub-meters are accessible for reading and maintenance the serial number on the sub-meter matches serial number on the sub-meter assessment checklist each sub-meter is correctly installed, tagged appropriately and only measuring flow to the designated particular unit/lot/storey/common area. If the connectivity audit reveals that a sub-meter has not been correctly installed, the Developer shall investigate and remove any cross connections and mismatches, prepare new as-constructed drawings and apply for another connectivity audit. If an AMR system has been installed, the AMR system must be fully commissioned and proven to be working by providing accurate readings from all sub-meters in the complex. This will be confirmed by Gold Coast Water at the time of AMR commissioning and connectivity audit. 3.6.1 Certification of work Final plumbing and drainage approval for the development can occur independently of the connectivity audit for the development. TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 9 of 11
For post 1 January 2008 developments, when the connectivity audit is successful, the City will advise the development that it can be issued with the Building Certifier s Certificate of Classification that all sub-metering and other requirements have been successfully completed. At the completion of the connectivity audit, a copy of the approved hydraulic, AMR electrical and as-constructed drawings, and the Sub-meter assessment checklist will remain with the City. This checklist will be used to provide the relevant information to link each sub-meter with its respective unit/lot in the water billing system. For pre 1 January 2008 developments, when the connectivity audit is successful, the City will accept the assessment checklist sub-meter data and all associated as-constructed information. This checklist will be used to provide the relevant information to link each private sub-meter with its respective unit/lot in the water billing system. 3.6.2 Asset handover to the City For new developments (post 1 January 2008), when the final connectivity audit for the development has been successfully completed, the ownership of sub-meter assemblies; the sub-meter isolation valves and any AMR system infrastructure (if required) transfers to the City. For pre 1 January 2008 developments, when the final connectivity audit for the development has been successfully completed, the ownership of sub-meter assemblies, the sub-meter isolation valves and any AMR system infrastructure associated with the sub-meters will remain with the Body Corporate. A twelve month warranty on all AMR components will be provided by the AMR manufacturer/supplier and also the approved technician s workmanship from the date of installation. Prior to the twelve month warranty period expiring, the City will inspect the system and if necessary advise the manufacturer/supplier of any defects which the approved technician will be required to rectify within a timeframe determined by the City. To ensure the City is satisfied that consumption data is being recorded and downloaded by the AMR system prior to the twelve month warranty period expiring, downloaded data for a minimum period of 5 months (30 min intervals) must be provided to the City for assessment. TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 10 of 11
For more information P 1300 GOLDCOAST (1300 465 326) W cityofgoldcoast.com.au TRACKS-#50598659-v1-METERING_AND_SUB-METERING_TECHNICAL_SPECIFICATIONS Page 11 of 11