DIRECTORATE OF ESTATES

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1 DIRECTORATE OF ESTATES PROCEDURE AND INFORMATION MANUAL EPM PM21 Energy and Watering Metering Specification Document Originated: October 2015 By: Chris Cunningham Issue Number: 1 Number of pages: 16 Approved by EMG: Status: Working Document Last revised: 08/08/2016 By: Chris Cunningham Next revision: 01/08/2017 By: Chris Cunningham Page 1

2 Metering Specification 1.0 Compliance Building Regulations Part L2A and Part L2B BREAAM Display Energy Certificates Carbon Reduction Commitment ( University Carbon Dashboard ) The Heat Networks Billing and Information Regulations ( billing of external organisations using MID Approved Meters ) Recharge information for internal university departments 2.0 Healthy and Safety considerations 3.0 Metering Roles and Responsibilities 4.0 Data Collection / Communications 5.0 Electric Meters including metering to obtain FITS payments 6.0 Gas Meters 7.0 Steam Meters 8.0 Heat Meters including metering to obtain RHI payments 9.0 Water Meters Storage water tank thro put monitoring ( Legionella ) Leakage Monitoring Reclaims from UU for make water used by steam raising plant 10.0 Compressed Air 11.0 Further Guidance Page 2

3 1.0 Compliance Requirements 1.1 Building Regulations Part L2A and Part L2B The Building Regulations Part L2A ( New Build ) Sections 4.38 to 4.39 and Part L2B ( Existing Buildings ) Sections 4.33 to 4.35 require :- Reasonable provision of energy meters would be to install energy metering systems that enable, at least 90% of the estimated annual energy consumption of each fuel to be assigned to the various end-user categories (heating, lighting, etc..). Detailed guidance on how this can be achieved is given in CISBE TM39 and the output of any renewable energy system to be separately monitored; and in buildings with a total useful floor area greater than 1000 m², automatic meter reading and data collection facilities. The metering provision shall be designed to facilitate benchmarking of energy performance as set out in CIBSE TM BREEAM Reference should be made to BREEAM Scheme Document :- BREEAM Education SD 5051, Chapter 6 Energy and Chapter 8 Water which provides guidance for the installation of water and energy metering. 1.3 Display Energy Certificates ( measurable loads ) Why Display Energy Certificates are required The purpose of Display Energy Certificates (DECs) is to raise public awareness of energy use and to inform visitors to public buildings about the energy use of a public building. DECs provide an energy rating of the building from A to G, where A is very efficient and G is the least efficient and are based on the actual amount of metered energy used by the building over a period of 12 months. An affected organisation must display a DEC in a prominent place clearly visible to the public and have in its possession or control a valid advisory report. The advisory report contains recommendations for improving the energy performance of the building. The following activities may be allowable as separable areas and excluded from the OR calculation: Regional server room Trading floor Bakery oven Sports flood lighting Furnace, heat treatment or forming process Blast chilling or freezing. Page 3

4 If these areas are included in a list of allowable separable energy areas for your type of building, then they may be separated from the assessment under certain circumstances. Only buildings with a total useful floor area greater than 500m2 occupied by a public authority and frequently visited by the public are affected by the legislation. On 9 July 2015 the requirement will extend to buildings with a total useful floor area greater than 250m2 occupied by a public authority and frequently visited by the public 1.4 Carbon Reduction ( University Carbon Dashboard ) The university is committed to a Carbon Management Plan. Metering is an important tool to help the building occupants understand their patterns of usage and identify un-necessary usage. A large proportion of the energy and water consumed by the university cannot be controlled using a Building Management System or other forms of building controls such as lighting control, water management controls etc. It will be necessary for some academic consumption uses to be monitored to help drive down energy / water consumption with in university departments. 1.5 Heat Networks Billing and Information Regulations 2014 The regulations cover most district heat networks and communal heating systems within the UK including England, Scotland, Wales and Northern Ireland. The regulations cover the use of most networks including residential, commercial, industrial and public sector. Residential includes the supply of heating to student accommodation even where the cost of heating is included in the rental terms. From October 2016 it becomes a criminal offence under MID Regulations in UK to use non-approved meters for billing and MID makes no distinctions between primary supply meters and secondary sub-meters used for billing. 1.6 Recharge Information. The university is required to install accurate metering to enable energy and water consumption to be measured to enable internal and external invoices to be produced. VAT is required to be added to external bound invoices. It is the policy to ensure if requested, Half Hour Data or other consumption information which may be requested by the internal or external organisation can be supplied as a hard copy or online using the Coherent Energy Monitoring Software to back up invoice calculations. From October 2016 it becomes a criminal offence under MID Regulations in UK to use non-approved meters for billing and MID makes no distinctions between primary supply meters and secondary sub-meters used for billing. Page 4

5 2.0.0 Healthy and Safety considerations Meters will need to be accessed regularly for maintenance, calibration and to obtain readings Meters readouts should be installed in easily accessible, safe, locations, ideally below head height to prevent injury from falls or back strain etc. There have been numerous instances where meters are installed at inappropriate heights or locations Consideration needs to be given to provide permanent access from a purposely constructed platform to prevent the future need to use step ladders or the need to construct a temporary platform Health and Safety ( Electric Metering ) University sub meters Health and safety is important to eliminate the risk to life or injury and this includes metering including electric meters. The main risks are: Electrocution from the voltage source applied to the electric meter, HV and LV current transformer operated meters. HV metering require the use of Voltage Transformer. Typical ratios of :- 11KV / 110v or 6.6KV / 110v Electrocution from Whole Current connected meters. For most of these meters the maximum continuous rated loading is 100 amps per phase. However, some of the latest meters are rated up to 200 amps per phase Electrocution from the current transformers used to measure phase currents and reduce the output to a safe value to be applied electric meter. Before working with current transformers under load the CTs require to be shorted out. Hence the important of connecting CTs to test terminal blocks or WAGO linked shorting terminals Fire and or explosion if the current transformer terminals are left open circuit whilst the phase cable is carrying a load then the induced EMF can cause a heating effect Fire and or explosion there have been instances where a contactor s electricians have incorrectly connected current transformer, failed to the check connections or crossed over connections on the meter between the CT and voltage source terminals. A meter wiring /connections diagram can be found beneath all Elster meter terminal covers Injury due to poor access to meters such as back strain, falls from ladders etc. Page 5

6 2.2 Health and Safety ( Steam Metering ) The main risks with steam systems / metering are that of Scalding or Burns when equipment needs to be removed Injury For removal of steam equipment from pipe work and to ensure no risk of scalding / burns two valve isolation is required as per schematic. In addition to aid the operator the pipe must be able to be drained of any pressure. This should be checked with the aid of a pressure gauge. If primary and secondary isolation valves are operated incorrectly then steam scoring of the valve faces can occur Drain points should be installed to drain the pressure from the steam line. Manual drain points should be used in conjunction with a pressure gauge Drain points have been known to clog with pipe debris and pressure needles can stick or the gauge can go out of calibration Once the pressure has been drained and the steam pipe left to cool down, a manual drain is required to prevent any condensate build up if there is leakage past the isolating valves. Overnight cold condensate can build up, however in the length of isolated pipe work there may be a increase in temperature towards the leakage isolation valve. When equipment is removed from the pipe the rush of cold condensate can become scalding hot even from a small steam leak Water Hammer. When a steam line is brought back into service it needs to be slowly warmed up to allow the condensate that forms to be removed by the automatic trap sets. A manual drain is required to ensure that the automatic traps have removed the condensate build up. Once steam is issuing through the manual drain, it is should be considered safe to slowly pressurise the line to prevent water hammer which can cause valves and pipelines to rupture Injury due to poor access / obstructions to meters such as back strain, falls from ladders etc. Page 6

7 2.3 Health and Safety ( Heat Metering ) Low Temperature Hot water up to 90 C ( LTHW ) Medium Temperature Hot water up to 145 C ( MTHW ) The main risks with hot water systems / metering are that of Scalding or Burns when equipment needs to be removed Most of the heat circulating circuits throughout the university are classed as LTHW However, there are a number of locations where the circulating circuits are classed a MTHW e.g. Stopford Boiler House with associated Primary heating circuits supplying the Stopford Building, Michael Smith Building, Dover Street Building and AV Hill Building The MTHW circuits are operated under pressure such that when open to atmosphere the MTHW content will flash off to produce low pressure steam The same considerations are to be given to hot water metering as for steam to prevent injury and to minimize the risks for maintenance, calibration and to obtain readings Injury due to poor access to meters such as back strain, falls from ladders etc. 2.4 Health and Safety ( Gas Metering ) University sub meters Fire and or explosion To prevent an unsafe condition occurring which could produce a fire and or explosion, all gas meter pulse outputs are to be galvanic isolated from the monitoring equipment with the use of a chatter box Risk of gas escape. All gas meters all to be installed and commissioned to maintain the gas integrity by a suitably qualified gas engineer Injury due to poor access to meters such as back strain, falls from ladders etc. Page 7

8 3.0 Metering roles and responsibilities Project manager The Project Manager is only to consider the project to be completed when he receives a certificate from Coherent Research stating that all the meters for the particular project have been commissioned and installed onto the Coherent Data Collection Software, and that the meter pulse input values have been verified as completed and the fiscal meter total consumption synchronised with the software The Project Mechanical and Electrical Consultants The consultants who designs the mechanical and electrical building services for the particular project must agree with the University the position and number of the electrical and mechanical metering to comply with all current building and upcoming regulations and the University metering specification Each consultant will then produce a schematic drawing for each of the services which will be sent to the University for comment after which they copies will sent to Coherent Research Each consultant will communicate with Coherent Research to ensure the correct metering network communications and communications equipment are specified prior to producing a tender drawing for the installation contractors Upon agreement with University and the Coherent, each consultant will produce metering network tender drawings for the particular installation contractor to provide the costs to supply and install the metering equipment For all communications between the consultant, Coherent Research and prospective M & E contractors the project will be identified with a unique name. ( Suppliers the likes of Micronics use the project name to identify quotations and for order tracking or in case of multiple enquiries for quotations ) The electrical consultant is required to produce drawings of the communications networks highlighting roles and responsibilities for the installation of daisy linking cabling between Elster electric meters and coherent IDC communications device, cable links connections between pulse output metres and the Coherent Modbus pulse counters, models wiring to connect Danfoss inverters and Micronic Heat Meter Integrators, power supply for the IDC unit, power supply for any major devices ( steam meters, heat meter integrators, etc... ), Data socket outlets with the connection to the University IT network At the start of any Project the electrical consultant will communicate with their University IT network engineers to obtain spare ports in existing computer switches. ( Failure to reserve spare ports at the this earliest opportunity may result in the project having to purchase an additional computer hub switch. ) At the same time IT networks will be able to issue the IP address for any Ethernet connectivity for metering and any BMS requirements. Page 8

9 3.2.7 The consultant shall be responsible to ensure that all metering is installed as per the manufacturer s instructions and the University specifications. ( Reference should be made to the University metering specification and the current University metering guide which is regularly updated to promote good practice installation ) The Mechanical and Electrical Contractor The M&E contractor will be responsible for procuring the metering equipment and its installation, including any cabling, power supplies and data sockets as specified in the tender documentation provided by the M&E consultants The contractor will be responsible to ensure that all metering is installed as per manufacturer s instructions and the university specification The M&E contractor will include his costs to purchase the services of the manufacturer s representative specialist engineer to commission the metering equipment. ( Too many times it is being found that M&E contractor is neglecting to purchase the manufacturers commissioning costs with the purchase of the metering equipment ) The M&E contractor along with the installation of the meter, will purchase from Coherent Research the costs to supply and commission the AMR communications to enable the metering equipment to talk to the Coherent Data Collection system. The cost will included for setting up the meters on the Coherent Software and an onsite presence to enable the commissioning and testing of the meters to enable Coherent Research to provide a completion certificate to the Project Manager The University Meter Maintenance Contractor The university Maintenance Services Unit employs an M&E contractor to carry out maintenance on university meters The Meter Maintenance Contractor will liaise with Coherent to provide an onsite presence to enable new meter communications to be commissioned, check the meter pulse output and provide local readings to enable synchronisation of the meter total with the value in the Coherent software Micronics Flowmeters Non-Invasive Heat Meter installations need to be commissioned in situ under the supervision of the Meter Maintenance Contractor Data Collection / Communications All electric meters ( Elster A1700 and A1140 ) are to be connected to an Coherent IDC, Coherent IDCi connected to an Ethernet data socket using RS232 or RS485 cabling with various Coherent Adapters Some Elster electric meters may be connected to a Coherent GPRS Modem using the appropriate Coherent Adapter The Coherent IDC is to be hardwired to a 8 input channel Coherent Modbus Pulse Counter. The Modbus Pulse Counter can be daisy linked to up to 31 Modus devices Page 9

10 such as additional Coherent Modbus Pulse Counters, Calec ST Modbus Heat Meter Integrators, Danfoss Inverter Drives etc Pulse outputs from, gas, water, steam and air flow meters are to be hardwired using a screened cable to the Coherent Modbus Pulse Counter The Coherent Modbus Pulse Counter channel can be used to replicate a pulse input to provide a pulse output for another device. 5.0 Electric Meters including metering to obtain FITS payments Electric meters are to be installed as per University Metering Guide and with reference to CIBSE CM Fiscal Electric HH Meters Any new Half Hour metered supply shall be an Elster A1700 Multi Utility Instrumentation Meter purchased by the University and installed by the university appointed Meter Operator Fiscal Electric NHH Meters Any new Non Half Hour metered supply shall be an Elster A1700 Multi Utility Meter purchased by the University and installed by the university appointed Meter Operator University Electric Sub Metering. ( LV Switchboards ) Before any metering arrangements are authorised and installed a schematic of the metering layout must be agreed with PSU Energy Team The main meter located on the LV side of the HV transformer output ( the LV Switchboard Incomer ) shall be monitored with an Elster A1700 Multi Utility Instrumentation Meter. All other sub meter circuits shall be monitored using an Elster A1700 Multi Utility or an Elster A1140 electric Each meter marshalling panel will require a data socket outlet The electric meters for all out going circuits from the LV switchboard are to be located in a meter marshalling panel which includes ( fuses and a neutral link ) for isolation of the voltage source to each meter and a Test Terminal Block to enable the current transformers to be shorted out All LV Switchboard circuits including spare ways for further use will be equipped with current transformers, which should be shorted out before dispatch from the manufacturing facility The current transformers shall be connected to the Test Terminal blocks with cables with a minimum size of 2.5mm2. The maximum cable length between the current transformers shall be no greater than 10 meters. For longer lengths the cable size shall be increased.( refer to the Current Transformer VA Burden Table in Section 3 of the University Metering Guide ). Page 10

11 5.3.7 The cable used to link the current transformers to each test terminal block shall be a minimum 6 core 2.5 mm2 SWA cable. The practise of using large numbered multi core SWA cable is not allowed Each current transformer shall be installed using two separate cables. The practise of using a single cable and linking the current transformer secondary terminals shall not be allowed University Electric Sub Metering. ( Distribution Boards / Equipment requiring a Current Transformer Operated Meter ) Where an electric meter is required to be installed local to a distribution board an Elster A1140 electric meter will be installed on to a purpose fabricated metal enclosure ( size 470mm Wide x 490mm High x 140mm Depth ) painted to match the standard university specified distribution board The enclosure will house a 3 phase Current Transformer Block, Test Terminal Block and a triple pole and neutral fused switch to isolate the voltage source to the current operated meter The Elster A1140 meter is to be installed on to the enclosure door which shall be hinged and provided with the means to fit a padlock. The door will require two 20mm hole, one for the cables to connect the meter and one for meter communications Cat 5e communications cables. Refer to the university distribution board LV Metering panel specification drawings in the University Metering Guide University Electric Sub Metering. ( Distribution Boards / Equipment requiring a Whole Current Operated Meter ) Meters can be installed to monitor lighting distribution boards and other equipment ( duty / standby air compressors, split air conditioning units. which can be isolated to change the electric meter without disruption to the monitored service unless agreed by the users. ) Where authorised by the PSU Energy Team an Elster A1140 Whole Current 100 Amp will be installed inside a purpose fabricated enclosure ( size 300mm Wide x 490mm High x 140mm Depth ) Gas Meters Fiscal Gas Meters All fiscal gas meters are to be installed with a pulse output connected to a splitter box to enable the pulse out to be used by, The gas supplier to provide monthly AMR readings for invoicing purposes A pulse output for connection by hardwire or wireless technology using a Dresser 103-e chatterbox to provide half hour data to the university Energy Metering System. A pulse output to connect National Grid equipment monitoring equipment. Page 11

12 6.2.0 Gas Sub Meters Gas meters will be installed in locations with reference to the University metering guide, CIBSE TM39 and Part L Building Regulations. Each gas meter output is to be connected using a Dresser chatterbox. ( The Dresser chatterbox 103-e is an isolation device capable of connecting 4 imports and having 4 outputs or can be configured for one import for duplicate outputs ) each gas fired heating boiler is to be fitted with a gas meter each gas-fired D WH fired boiler is to be fitted with a gas meter the supply to catering equipment is to be fitted with a gas meter the supply to laundry equipment is to be fitted with a gas meter any laboratory or workshop supply is to be fitted with a gas meter The designer shall specify to install either an ITRON ( ex- Actaris ) diaphragm meter. MZ Rotary meter or Delta QD gas meter, each fitted with the appropriate pulse output unit The designer shall specify to install line sized gas meters for all situations. The practice of installing smaller sized gas meters into a gas line to reduce cost is not allowed. This practice has been carried out for earlier projects which has resulted in gas equipment going to lock-out due to pressure reductions within the pipe work at the maximum firing load The designer is required to verify which gas meters are to be installed with consideration to the pressure drop across the meter and the most appropriate turndown ratio, e.g. U160 diaphragm ( positive displacement ) meter may be more appropriate than installing a rotary gas meter rated at 160 m3 / hour dependent on the consuming gas equipment Steam Meters Steam meters are to be installed in locations with reference to the University Metering Guide, CIBSE TM39 and Part L Building Regulations. Such locations to be considered should be :- The main supply to the building The steam supply to LTHW plate heat exchangers The steam supply to DHW plate heat exchangers The steam supply to autoclaves and any other processes The university experiences can experience high turndown ratios where a Variable Area Steam Meter is more suitable than a Vortex Steam. The choice of meter must consider the turndown ratio against the steam meter cost, especially for large steam pipe sizes For pipe sizes 50mm, 80mm and 100mm the Spirax Sarco TVA may be specified. Adjacent to each TVA meter a socket outlet will be installed for 240 volt /24 volt DC plug-in transformer For pipe sizes greater than 100mm the Spirax Sarco IVLA meter is to be specified connected to a Spirax Sarco M750 or MG200 steam conditioning unit. Page 12

13 7.1.4 For pipe sizes less than 50mm a Spirax Sarco TFA steam meter will be used. The smallest available size is a DN 25 meter ABB supply an RHI compliant FSV450 Vortex Steam Meter for pipe sizes from 15mm to 300mm. The enable the basic meter to RHI complaint there is an additional cost for a software modification for the display to read Energy in KWH and for supply of a UKCAS calibration certificate Heat Meters including metering to obtain RHI payments Heat meters are to be installed in locations with reference to the University Metering Guide, CIBSE TM39 and Part L Building Regulations such as Variable Temperature Circuits Constant Temperature Circuits Hot water generated by renewable equipment i.e, Ground Source Heat Pumps and Solar Thermal generators The installation locations needed to be assessed which reference to separable, identifiable loads dictated Building heating zone orientation, ( North, South, East or West facing facades ) Building zone temperature set point. ( VT and CT Circuits ) Time of Use ( BMS control of a single large or group of heating circuits using a Time Schedule ) Demand ( Heating circuit use controlled by Occupancy Demand ) Heat meters are to be specified to be installed as manufacturer s instructions. The accuracy of any heat metering installation is dependent on complying implicitly with the manufacturer s installation instructions Invasive Heat meters All invasive heat meters are to be specified to be installed into the return flow circuit. This is considered as good practise by manufacturers to prompt long in-service life of the flow meter For invasive heat meters, an ITRON ( ex-actaris ) hot water meters fitted with a Cyble K=1 pulse output unit will be installed connected to an Aquametero Calac ST Modbus Heat Meter Integrator To ensure metering accuracy, no isolation or by-pass valves are to be installed within the manufacture s requirement to promote Laminar flow through the meter To ensure accuracy, the heat meter manufacturer will state how many pipe diameters of straight pipe lengths before and after the flow meter to promote laminar flow. ( Typical 10 before and 5 after ) To ensure accurate flow measurement if there is insufficient straight lengths a flow straightened is to be installed to the manufacturer s instruction before the flow meter For the production of Domestic Hot Waterusing a solar thermal collector where the Page 13

14 Glycol / Water mixture density will change over time a Superstatic Flow meter is to be used connected to a Sontex Heat Meter Integrator. This provides a pulse output signal Non-Invasive Heat Meters Non-invasive heating metering installations are the preferred method using Micronics HM1000-UM strap-on ultrasonic flow measurement device for pipe sizes from 25 mm to 100mm. The meter simply requires a plug-in power supply and provides a Modbus output. ( The U-1000 is factory set up to be clamped on to a specific pipe diameter and material ) For pipe diameters greater than 100mm a Micronics U-3000 strap-on ultrasonic flow measurement device connected to an Aquametero Calac ST Modbus Heat Meter Integrator will be specified. The U-3000 clamp-on device needs to be programmed on site by the manufacturer s representative To ensure accuracy, Non-Invasive flow meters require 20 pipe diameters of straight pipe lengths before and 10 pipe diameters after the flow meter to promote laminar flow Heat Metering for the Renewable Heat Incentive To enable RHI payments to be obtained by the university heat metering equipment will be installed as per Her Majesty s Revenue and Customs ( HMRC ) for the Renewable Heat Incentive Consideration must be given to the type of heat metering system installed to take account of the circulating fluid density. To ensure that the heat metering equipment / installation is compliant, the contractor will employ the services of an accredited Independent Metering Auditor to certify the installation an produce a Independent Meter Audit Report The contractor will employ the Independent Metering Auditor to complete the application to OFGEM to register the installation and enable the university to receive RHI payments To comply with RHI requirements additional metering such as electric meters for GSHP and ASHP is required to be installed and monitored to ensure the heat producing equipment is operating efficiently Guidance of the approved metering equipment to be installed for RHI compliance can be found at Water Meters Water meters are to be installed in locations with reference to the University Metering Guide, CIBSE TM39 and Part L Building Regulations. Such locations to :- Storage water tank through put monitoring ( Legionella ) Leakage Monitoring Reclaims from UU for make water used by steam raising plantwater used for laboratory / workshop applications. Page 14

15 9.1.2 A water meter will be installed to every water supply pipe into a property. This may be a water utility billing water meter or a university sub-meter A water meter will be installed to the outlet of every cold water storage tank to enable leakage monitoring and Legionella monitoring to ensure that there is a regular turnover of the tank contents as defined by the current Legionella regulations A water meter will be installed to each cold water make up to supply steam generating systems. This meter will be used to obtain refunds from the United Utilities ( i.e. Sewage Abatement non-return of metered water supplies to sewage systems ) A water meter will be installed to specific laboratory / workshop equipment or process which may require water a one shot application an example of has been a Paper Production Pilot Plant, Normally, such processes will be fitted with a re-circulated water supply which may have to be chilled. In such circumstances any make up water supply should be metered. ( this make-up water may not be required to be monitored remotely if make-up is required infrequently. In this case the water meter will be installed to aid maintenance staff when searching for leakage within a building.) A water meter will be installed to the make-up water supply to pressurisation units. Remote monitoring is not required if make-up is to be infrequent the water meter will be installed to aid maintenance staff when searching for leakage within a building Compressed Air Meters Compressed air systems and equipment can waste large amounts of electricity due air leaks in the system, inappropriately designed systems using desiccant driers instead of conditioning the air at the point of, poor performing or undersized compressor equipment Large air compressors supplying the general service air for a building shall be fitted with an air flow meter provided with a pulse output or Modbus communication to monitor the airflow whilst comparing the electrical consumption Large air compressor used for academic experiments may need to be fitted with an airflow meter as direct by PSU. Such an example would be a compressor used to provide air for a nitrogen production plant. Page 15

16 12.0 Further Guidance University Metering Guide 2015 CIBSE Guide TM39 Building Energy Metering 2010 ISBN CIBSE Guide TM46 Energy Benchmarks 2008 ISBN Carbon Trust Metering; Introducing the techniques and technology for energy data management. Carbon Trust Advanced metering for SMEs Carbon and cost savings The Energy Performance of Buildings (Certificates and Inspections) Regulations (Northern Ireland) 2008, SR 2008/170, amended by SR 2008/241, SR 2009/369 and SR 2013/12 ( ) HSE Legionella ACOP Publication :- Essential information for providers of residential accommodation BREEAM Scheme Document :- BREEAM Education SD 5051 Heat Network Billing and Information Regulations 2014 The Energy Performance in Buildings EU Directive 2006 Articles 9, 10, and 11 The EU Measuring Instruments Directive 2004 which comes into full implementation on 1 st October Page 16