Waverley Borough Council, The Burys, GODALMING, GU7 1HR

Transcription

1 Site Details Site Address (where inspection was carried out) Waverley Borough Council, The Burys, GODALMING, GU7 1HR City GODALMING Postcode GU7 1HR RRN Related RRN Report Information Inspection Date Issue Date UPRN Assessor Details Assessor Name David Powell Assessor ID ECMK Employer/Trading Name Employer/Trading Address Accreditation Scheme Name Powell's Energy Performance Assessments 5 Grasmere Road, Farnborough, Hants, GU14 0LE ECMK RRN: Page 1 of 38

2 Executive Summary This report has been prepared in accordance with the requirements of the Energy Performance of Buildings Regulations 2012 as amended, which implements the EU legislative requirements of the Energy Performance of Buildings Directive 2010/31/EU. The inspection has been carried out by an Accredited Air Conditioning Assessor using the Department for Communities and Local Government approved inspection and reporting methodology. Building type/details (building benchmark and occupancy profile) This council office block is in two parts a three story building with a pitched and double hipped roof and with solid brick wall construction, which was built pre 1990's at the front, offering offices, toilets and meeting room over three floors. The rear extension was added in the early 1980's It offers three floors of offices, meeting rooms, toilets and a reception area, and could have about 350 people in the building at any one time. The extension has a pitched tiled roof with double glazed windows in alloy frames around the reception area and single glazed units in alloy frames in all the other elevations. The construction is cavity wall with some alloy double glazed units which can be opened and the windows have manually operated internal blinds fitted. The reception entrance is from the rear car park and is in the northwest elevation and the longest elevation is northeast/southwest. There are three Daikin packaged split systems conditioning the reception and office areas. The server storage area is conditioned by a Hitachi split system and the main server room has two Clivet systems conditioning this area, which are controlled by a Isolert 3+ control unit set at 21.5C. The Daikin split systems are controlled by hard wire controllers in each conditioned area. The conditioned area is 430m2 in total and the calorific output is 71kw. The building has a wet system heating the building in the winter months and the heat pumps are used to top up temperature in the reception areas. The boilers for the wet system are three Wessex ModuMax 250 Condensing units. The opening hours are 8.45am to 5.15pm monday to friday and 8.45am to 4.45pm on fridays for the general public. The council chambers are used most evenings but are not a conditioned area. The external maintenance company for the office areas is ACS of Godalming and Clivet systems of Portsmouth for the server room equipment System type/details There are six packaged units serving this office block, three twin Daikins, one Hitachi and two Clivet units. These are all split packaged units, with concealed evaporator ceiling units with ducting to the diffusers and one wall unit in the small server room. The condensers are located in and around two courtyards, some of the units are on the flat roof surrounding the inner courtyard. The server units are located in a courtyard used by a nursery, the units have their own enclosure. Each systems is individually controlled by a local wall mounted hard wired controller or infra-red controller located in the conditioned area. Most of the controllers come with the facilities for day and time programming, temperature settings fan and mode of equipment operation. Sampling statement in accordance with DCLG guidance For the purpose of this report the equipment has been inspected in accordance with TM44 in order to build an overall picture of the whole system. The following equipment was inspected (10% of all equipment minimum of 3 units, to include one of each manufacture) Volume 001 contains Waverley County council Offices Building Packaged system VOL001 SYS001 :(Police area) 1 Daikin condensers, 1 Evaporators units, 1 wall mounted controllers with windows which can be opened Packaged system VOL001 SYS002 :(small server Room) RRN: Page 2 of 38

3 Executive Summary 1 Hitachi condensers, 1 Evaporators units, 1 wall mounted controllers with windows which can not be opened Packaged system VOL001 SYS003 :(Main server room) 2 Clivet Velcon 1521 condensers, 1 Isovel unit with ducting, 1 Isolert 3+ Control with remote control, and with windows which can not be opened Comments on controls/maintenance/operation Controls are programmed to run the systems automatically, but in the police office area it operated manual Comments on availability of system documentation (or whether it had to be prepared) Asset list was incomplete, information was collected on site. Some of the maintenance sheet were available on site, but the F-Gas records were not available in the log book Additional information of relevance to the building/system/inspection/report The server condensers are in a play area and play equipment is stacked around the condensers, this restricts the air flow to the equipment, remove equipment and increase height of enclosure The Hitachi and one of the clivet air coolers units for the server rooms use R22 refrigerant. when more than 3kg a refrigerant is in a system this needs to comply with the regulations of ODS Consider replacing R22 single speed system, with a new inverter type system with an EER OF 4 or better which can make savings of between 30%-50%, as R22 refrigerant is being phased out by source material from The refrigerant type used in these server systems is subject to the F-GAS regulations and ODS regulation. The regulations place the responsibility on the system operator for compliance with the regulations. They also require that the operator keeps a site based or central record of all the refrigerants and refrigerant handling carried out on their system. From the 1st January 2010 EC regulations 2037/2000 it is illegal to use virgin HCFC'S to service equipment. This ban applies even if HCFC was purchased before the ban date. It is illegal to stockpile and use any supplies of virgin HCFC'S after the end of From 1st January 2015 it will be illegal to use recycled or reclaimed HCFC'S to service equipment. Note: These bans refer to the "use" of HCFC'S for servicing and maintenance. Customers can continue using equipment containing HCFC's beyond the phase out dates provided that no additions of refrigerant are required. RRN: Page 3 of 38

4 About this document and the data in it This document was produced following an energy assessment undertaken by a qualified Energy Assessor, accredited by ECMK. You can obtain contact details of the Accreditation Scheme at A copy of this report has been lodged on a national register as a requirement under the Energy Performance of Buildings Regulations 2012 as amended. It will be made available via the online search function at The report (including the building address) and other data about the building collected during the energy assessment may be made publicly available at This report and other data about the building may be shared with other bodies (including government departments and enforcement agencies) for research, statistical and enforcement purposes. Any personal data it contains will be processed in accordance with the General Data Protection Regulation and all applicable laws and regulations relating to the processing of personal data and privacy. For further information about this and how data about the property are used, please visit To opt out of having information about your building made publicly available, please visit There is more information in the guidance document Air-conditioning inspections for buildings available on the Government website at: It explains the content and use of this document, advises on how to identify the authenticity of a report and how to make a complaint. RRN: Page 4 of 38

5 Key Recommendations: Advice and comments on the efficiencies of the AC sub system(s) Implement a day and time off schedule in all areas as it best practice to rely on the system to respond to any cooling or heating demands in the treated areas rather than staff. This is because the system will respond faster and will need to operate for less time to bring temperatures to the optimal levels. This can be extremely wasteful way of operating equipment especially if staff fail to switch off equipment when not required F-Gas records were not available on site. All systems over 3kg of refrigerant charge should be checked every 12 months and more frequently for larger systems and should be keep in the Buildings Log Book. For more information visit or Energy-efficiency loans of between??5,000 and?? are available to qualifying small and medium sized enterprises (SMEs) in England and Scotland and any sized and any sized business in Wales, looking to invest capital in energy saving projects. All businesses based in Northern Ireland may now be eligible to apply for an interest free loan of up to??400,000. The loans are repaid over a period of up to four years and businesses must have been trading for at least 12 months. Loans are subject to terms and conditions and eligibility. Visit trust.co.uk/loans for more details Make sure cooling system and wet water system are not working against each other in the summer months. Have an interlock fitted between the two systems to stop simultaneous heating and cooling Advice and comments on the maintenance of the AC sub system(s) All equipment and filters inspected were in good condition and well maintained. Insulation in the rear courtyard for the server room units needs replacing, copper pipes are exposed Clear area of toys for server room equipment in outdoor compound and increase compound height as this is an ongoing problem Advice and comments on the control of AC sub system(s) Although the controls can be programmed to run the system automatically, they are not set to use this facility in the police area Advice and comments on the management of AC sub system(s) Keep a running log of occupant's complaints, noting the time, day, location of the system concerned and the remedial work carried out. Fully investigate the cause of occupants complaints as they can highlight, areas where the system is under performing RRN: Page 5 of 38

6 Sub System Index Volume Definitions Sub System ID Sub System Description Effective Rated Cooling Output of Sub System (kw) Sub System Area Served VOL001 VOL001/SYS001 Daikin packaged split system 13 Police offices Inspection Date Cooling Plant Count 1 AHU Count 0 Terminal Units Count 1 Sub System Controls Count 1 RRN: Page 6 of 38

7 Sub System Index Volume Definitions Sub System ID Sub System Description Effective Rated Cooling Output of Sub System (kw) Sub System Area Served VOL001 VOL001/SYS002 Hitachi packaged split systems 3 IT repair room Inspection Date Cooling Plant Count 1 AHU Count 0 Terminal Units Count 1 Sub System Controls Count 1 RRN: Page 7 of 38

8 Sub System Index Volume Definitions Sub System ID Sub System Description Effective Rated Cooling Output of Sub System (kw) Sub System Area Served VOL001 VOL001/SYS003 Clivet packaged system 15 Server Room Inspection Date Cooling Plant Count 2 AHU Count 0 Terminal Units Count 1 Sub System Controls Count 1 RRN: Page 8 of 38

9 Note: Request the following information from client and complete the following checklist. The assessor should examine the relevant documentation and systems as far as possible to check that the installed equipment is as described. If the documentation is not available, then an additional part of this procedure is to locate the equipment and assemble a portfolio of relevant documentation which should include all Essential items as a minimum. Record Checklist Pre Inspection Information Level Information Required Reviewed Not Available Essential Desirable Optional Itemised list of installed air conditioning and refrigeration plant including product makes, models and identification numbers. [x] [ ] Cooling capacities, with locations of the indoor and outdoor components of each plant. [x] [ ] Description of system control zones, with schematic drawings. [ ] [x] Description of method of control of temperature. [ ] [x] Description of method of control of periods of operation. [ ] [x] Floor plans and schematics of air conditioning systems. [ ] [x] Reports from earlier inspections of air conditioning systems, and for the generation of an energy performance certificate. Records of maintenance operations carried out on refrigeration systems, including cleaning indoor and outdoor heat exchangers, refrigerant leakage tests, repairs to refrigeration components replenishing with refrigerant. Records of maintenance operations carried out on air delivery systems, including filter cleaning and changing, and cleaning of heat exchangers. Records of calibration and maintenance operations carried out on control systems and sensors, or BMS systems and sensors. [ ] [x] [ ] [x] [ ] [x] [ ] [x] Records of sub-metered air conditioning plant use or energy consumption. [ ] [x] For relevant air supply and extract systems, commissioning results of measured absorbed power at normal air delivery and extract rates, and commissioning results for normal delivered delivery and extract air flow rates (or independently calculated specific fan power for the systems). An estimate of the design cooling load for each system (if available). Otherwise, a brief description of the occupation of the cooled spaces, and of power consuming equipment normally used in those spaces. Records of any issues or complaints that have been raised concerning the indoor comfort conditions achieved in the treated spaces. Where a BMS is used the manager should arrange for a short statement to be provided describing its capabilities, the plant it is connected to control, the set points for the control of temperature, the frequency with which it is maintained, and the date of the last inspection and maintenance. [ ] [x] [ ] [x] [ ] [x] [ ] [x] RRN: Page 9 of 38

10 Record Checklist Pre Inspection Information Level Information Required Reviewed Not Available Where a monitoring station, or remote monitoring facility, is used to continually observe the performance of equipment such as chillers, the manager should arrange for a statement to be provided describing the parameters monitored, and a statement reviewing the operating efficiency of the equipment. [ ] [x] RRN: Page 10 of 38

11 Cooling Plant Equipment Inspected Unit Identifier Component Identifier Manufacturer Description (type/details) Model/Reference VOL001/SYS001 VOL001/SYS001/CP001 Daikin Twin split packaged system RZQ125DBV1B Serial Number Year Plant Installed 2010 Rated Cooling Capacity (kw) 13 Refrigerant Type Refrigerant Charge (kg) 4 Location of Cooling Plant Areas/Systems Served R410A On the right hand wall in the first court yard Police offices area Note below any discrepancy between information provided by client and on site information collected, or any information of additional relevance to the cooling plant/system: all data collected on site RRN: Page 11 of 38

12 This section applies to the following unit: VOL001/SYS001/CP001 Cooling Plant Equipment Visual Inspection Item Ref Inspection Item Finding Notes and Recommendations CS2.1 Is the refrigeration plant operational? Yes [ ] No [x] Not applicable to this system CS2.2/a CS2.2/b CS2.2/c CS2.3/a Is the area around the refrigeration plant clear of obstructions & debris? Is the general condition of refrigeration and any associated central plant in good order? Is the condenser placed clear from warm air discharge louvres? Are compressors operational or can they be brought into operation? Yes [x] No [ ] area around chiller plant was clear of debris Yes [ ] No [x] not applicable to this system Yes [x] No [ ] condenser is positioned clear of discharge lourvers Yes [x] No [ ] Compressor was operational at time of inspection. The temperatures were recorded from the evaporator off with CS3.1/a Is the heat rejection plant operational? Yes [x] No [ ] condenser fan was checked for operation, temperatures noted 26.2c and ambient was 10.5C CS3.1/b CS3.2/a CS3.2/b CS4.1 Are condenser heat exchangers undamaged/ un-corroded and clean? Is the area around the heat rejection plant clear of obstructions & debris? Is the condenser free of any possibility of air recirculation? Is the insulation on circulation pipe work well fitted and in good order? Yes [x] No [ ] unit is in good condition and undamaged Yes [x] No [ ] the condenser is clear of debris Yes [x] No [ ] units are positioned to minimise air recirculation Yes [x] No [ ] Insulation joints have receded and need resealing, copper pipe is exposed at the insulation joints RRN: Page 12 of 38

13 Cooling Plant Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS1.1 Refrigerant Used Refrigerant Type Montreal/ODS/F-Gas controlled? R410A Yes [x] No [ ] The system is over the compliance regulations of 3kg of refrigerant for F-gas The refrigerant type used in the system is subject to the F-GAS regulations. The regulations place the responsibility on the system operator for compliance with the regulations. They also require that the operator keeps a site based or central record of all the refrigerants and refrigerant handling carried out on their system. source material F-gas support. CS1.3 Regular Maintenance Is there evidence of regular maintenance? Yes [x] No [ ] maintenance sheets were available Is the maintenance undertaken by suitably competent people and in accordance to industry guidelines? Yes [ ] No [x] Engineer or company's F-gas certificates were not available or in Buildings Log Book Request maintenance company's F-Gas accreditation certificate and this should be added to Log Book in the F-Gas section CS1.4 CL1.1 Appropriately Sized Cooling Plant Following Information Required: Total Occupants served by this plant 20 Total Floor Area served by this plant(m²) 191 The current version of the Building Regulations Approved Document Part L documentation provides guidance suggesting that the plant should not be more than 20% oversized. This should be adopted as means of comparison to stay in line with current standards. Occupant Density (m²/person) 9.55 Maximum Instantaneous Heat Gain (W/m²) Installed Cooling Capacity (kw) 12.5 The Installed Size is Deemed: More than Expected Less than Expected As Expected [ ] [x] [ ] The cooling is less than expected for the area served, when compared to peak cooling load calculations according to "CIBSE TM44 simplified Method". The cooling capacity installed is 12.5kw. The required peak cooling capacity for the treated police offices is estimated at 36.67kw as follows Load Area 191m x160w = 30.56kw+20% 60% glazing CS1.6 Metering Comparison Is metering installed to enable monitoring of energy consumption of refrigeration plant? Yes [ ] No [x] RRN: Page 13 of 38

14 Cooling Plant Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS2.2/d CL1.3 to appropriate energy benchmarks Refrigeration Leaks Refrigeration Is the refrigeration plant connected to a BEMS that can provide out of range alarms? Are there any records of air conditioning plant usage or sub-metered energy consumption with expected hours of use per year for the plant? Is the energy consumption or hours of use excessive? Recorded meter reading Install sub meters to monitor energy used by refrigeration equipment Yes [ ] No [x] Not applicable to this system Yes [ ] No [x] no records available Yes [ ] No [x] no records available Are there any signs of a refrigerant leak? Yes [ ] No [x] no signs of refrigerant residue Assess the refrigeration compressor(s) and the method of refrigeration capacity control Refrigeration Temperature: Pre Compressor( C) 0 Post Compressor( C) 0 Ambient( C) 11 The Temperature is Deemed: More than Expected Less than Expected As Expected [ ] [ ] [x] System has variable speed inverter motor to control load Compressor was checked, both condenser and evaporator were checked for air flow temperature to assess if compressor was operational and an off air temperatures were for the condenser and 9.7c from the evaporator RRN: Page 14 of 38

15 Cooling Plant Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS3.5 Water Cooled Chillers (Cooling Towers & Evaporative Condensers) Humidity Control Is the water flow through cooling towers or evaporative coolers even and efficient, and there is no loss of water? Is there a management regime in place to ensure that water is regularly checked and treated to ensure that there is no Legionella risk? Is there separate equipment installed for humidity control? Yes [ ] No [x] not applicable to this system Yes [ ] No [x] not applicable to this system Yes [ ] No [x] Not applicable to this system RRN: Page 15 of 38

16 Cooling Plant Equipment Inspected Unit Identifier Component Identifier Manufacturer Description (type/details) Model/Reference Serial Number VOL001/SYS002 VOL001/SYS002/CP001 Hitachi Year Plant Installed 1998 Rated Cooling Capacity (kw) 3 Refrigerant Type Refrigerant Charge (kg) 4 Location of Cooling Plant Areas/Systems Served Single split packaged system RAS-3HQVE5 4UE04940 R22 Nursery courtyard IT repair room Note below any discrepancy between information provided by client and on site information collected, or any information of additional relevance to the cooling plant/system: All data collected on site. Manufacture date is unknown RRN: Page 16 of 38

17 This section applies to the following unit: VOL001/SYS002/CP001 Cooling Plant Equipment Visual Inspection Item Ref Inspection Item Finding Notes and Recommendations CS2.1 Is the refrigeration plant operational? Yes [x] No [ ] condenser fan was checked for operation, temperatures noted evaporator off air 18.9C ambient was 19.3C CS2.2/a CS2.2/b CS2.2/c CS2.3/a Is the area around the refrigeration plant clear of obstructions & debris? Is the general condition of refrigeration and any associated central plant in good order? Is the condenser placed clear from warm air discharge louvres? Are compressors operational or can they be brought into operation? Yes [ ] No [x] area around plant is used as storage area Yes [ ] No [x] Not applicable to this system Yes [ ] No [x] Not applicable to this system Yes [x] No [ ] Compressor was operational at time of inspection. The off air temperature was recorded as 18.9c from the evaporator CS3.1/a Is the heat rejection plant operational? Yes [x] No [ ] condenser fan was checked for operation, temperatures noted evaporator off air 18.9C ambient was 19.3C CS3.1/b CS3.2/a CS3.2/b CS4.1 Are condenser heat exchangers undamaged/ un-corroded and clean? Is the area around the heat rejection plant clear of obstructions & debris? Is the condenser free of any possibility of air recirculation? Is the insulation on circulation pipe work well fitted and in good order? Yes [x] No [ ] unit is in good condition and undamaged Yes [ ] No [x] The area around the condenser was used as a storage area for toys Yes [x] No [ ] units are positioned to minimise air recirculation Yes [ ] No [x] insulation in some areas needs replacing and joints sealing (photo evidence taken) RRN: Page 17 of 38

18 Cooling Plant Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS1.1 Refrigerant Used Refrigerant Type Montreal/ODS/F-Gas controlled? R22 Yes [x] No [ ] R22 and 4.4kg of refrigerant is in system Replacing R22 single speed system, with a new inverter system can make savings of between 30%-50%, because they are more efficient and consumes less power The refrigerant type used in the system is subject to the F- GAS regulations and ODS regulation. The regulations place the responsibility on the system operator for compliance with the regulations. They also require that the operator keeps a site based or central record of all the refrigerants and refrigerant handling carried out on their system. From the 1st January 2010 EC regulations 2037/2000 it is illegal to use virgin HCFC'S to service equipment. This ban applies even if HCFC was purchased before the ban date. It is illegal to stockpile and use any supplies of virgin HCFC'S after the end of From 1st January 2015 it will be illegal to use recycled or reclaimed HCFC'S to service equipment. Note: These bans refer to the "use" of HCFC'S for servicing and maintenance. Customers can continue using equipment containing HCFC's beyond the phase out dates provided that no additions of refrigerant are required. CS1.3 Regular Maintenance Is there evidence of regular maintenance? Yes [x] No [ ] maintenance sheets were available Is the maintenance undertaken by suitably competent people and in accordance to industry guidelines? Yes [ ] No [x] No certificates of Engineers or Company accreditation for F- GAS were available Request maintenance company's F-Gas accreditation and then this should be added to the F-Gas section of the Log Book CS1.4 CL1.1 Appropriately Sized Cooling Plant Following Information Required: Total Occupants served by this plant 1 Total Floor Area served by this plant(m²) 18 The current version of the Building Regulations Approved Document Part L documentation provides guidance suggesting that the plant should not be more than 20% oversized. This should be adopted as means of comparison to stay in line with current standards. RRN: Page 18 of 38

19 Cooling Plant Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS1.6 CS2.2/d CL1.3 Metering Comparison to appropriate energy benchmarks Refrigeration Leaks Refrigeration Is metering installed to enable monitoring of energy consumption of refrigeration plant? Is the refrigeration plant connected to a BEMS that can provide out of range alarms? Are there any records of air conditioning plant usage or sub-metered energy consumption with expected hours of use per year for the plant? Is the energy consumption or hours of use excessive? Occupant Density (m²/person) 18.0 Maximum Instantaneous Heat Gain (W/m²) Installed Cooling Capacity (kw) 2.6 The Installed Size is Deemed: More than Expected Less than Expected As Expected Yes [ ] Recorded meter reading No [x] No data available [x] [ ] [ ] The cooling capacity is more than expected for the are served, when compared to peak cooling loads calculated according to CIBSE TM44 Simplified Method. The cooling capacity installed at full load is 2.6kw The required peak cooling capacity for the server repair Office is estimated at 2.15kw as follows: area x 3.163= m x 100w= 1.79kw plus 20% =2.15kw. Maximum instantaneous heat gain 25400/121=210w/m2 Yes [ ] No [x] not applicable to this system Yes [ ] No [x] no records available Yes [ ] No [x] this system is operational 24hrs Are there any signs of a refrigerant leak? Yes [ ] No [x] no signs of refrigerant residue on the ground or under the unit Refrigeration Temperature: Pre Compressor( C) 0 Post Compressor( C) 0 Ambient( C) 8 The Temperature is Deemed: More than Expected Less than Expected As Expected [ ] [ ] [x] RRN: Page 19 of 38

20 Cooling Plant Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations Assess the refrigeration compressor(s) and the method of refrigeration capacity control single speed compressor Compressor was checked for operation and the evaporator off air flow temperature was with CS3.5 Water Cooled Chillers (Cooling Towers & Evaporative Condensers) Humidity Control Is the water flow through cooling towers or evaporative coolers even and efficient, and there is no loss of water? Is there a management regime in place to ensure that water is regularly checked and treated to ensure that there is no Legionella risk? Is there separate equipment installed for humidity control? Yes [ ] No [x] not applicable to this system Yes [ ] No [x] not applicable to this system Yes [ ] No [x] Not applicable to this system RRN: Page 20 of 38

21 Cooling Plant Equipment Inspected Unit Identifier Component Identifier Manufacturer Description (type/details) Model/Reference Serial Number VOL001/SYS003 VOL001/SYS003/CP001 Clivet Year Plant Installed 2002 Rated Cooling Capacity (kw) 15 Refrigerant Type Refrigerant Charge (kg) 13 Location of Cooling Plant Areas/Systems Served split packaged condenser CRM-EC24 ABBEAS R407C Nursery Courtyard Main server room Note below any discrepancy between information provided by client and on site information collected, or any information of additional relevance to the cooling plant/system: All Data collected on site RRN: Page 21 of 38

22 This section applies to the following unit: VOL001/SYS003/CP001 Cooling Plant Equipment Visual Inspection Item Ref Inspection Item Finding Notes and Recommendations CS2.1 Is the refrigeration plant operational? Yes [ ] No [x] Not applicable to this system CS2.2/a CS2.2/b CS2.2/c CS2.3/a Is the area around the refrigeration plant clear of obstructions & debris? Is the general condition of refrigeration and any associated central plant in good order? Is the condenser placed clear from warm air discharge louvres? Are compressors operational or can they be brought into operation? Yes [ ] No [x] not applicable to this system Yes [ ] No [x] Not applicable to this system Yes [x] No [ ] condenser is positioned clear of discharge lourvers Yes [x] No [ ] Compressor was operational at time of inspection. The off airflow temperatures was recorded as 28.7c and CS3.1/a Is the heat rejection plant operational? Yes [x] No [ ] Condenser fan was checked for operation, off air temperatures was with ambient 8.1C CS3.1/b CS3.2/a CS3.2/b CS4.1 Are condenser heat exchangers undamaged/ un-corroded and clean? Is the area around the heat rejection plant clear of obstructions & debris? Is the condenser free of any possibility of air recirculation? Is the insulation on circulation pipe work well fitted and in good order? Yes [x] No [ ] unit is in good condition and undamaged Yes [ ] No [x] The area around the condenser is used to store toys Yes [x] No [ ] units are positioned to minimise air recirculation Yes [ ] No [x] Insulation needs immediate replacement as copper pipes are exposed, insulation joints have receded and need resealing. RRN: Page 22 of 38

23 Cooling Plant Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS1.1 Refrigerant Used Refrigerant Type Montreal/ODS/F-Gas controlled? R407C Yes [x] No [ ] System is over the compliance regulations of 3kg of refrigerant for F-Gas. The regulations place the responsibility on the system operator for compliance with the regulations. It is also require that the operator keeps a site based or central record of all the refrigerants and refrigerant handling carried out on their system. source material F-gas support. F-gas records should be kept in the Log Book CS1.3 Regular Maintenance Is there evidence of regular maintenance? Yes [x] No [ ] maintenance sheets were available Is the maintenance undertaken by suitably competent people and in accordance to industry guidelines? Yes [x] No [ ] Engineer or company's F-gas certificates were not available Maintenance company or engineers F-Gas accreditation should be added to the F-Gas section of the Log Book CS1.4 CL1.1 Appropriately Sized Cooling Plant Following Information Required: Total Occupants served by this plant 1 Total Floor Area served by this plant(m²) 23 The current version of the Building Regulations Approved Document Part L documentation provides guidance suggesting that the plant should not be more than 20% oversized. This should be adopted as means of comparison to stay in line with current standards. Occupant Density (m²/person) 23.0 Maximum Instantaneous Heat Gain (W/m²) Server room set for manufactures design calculations Installed Cooling Capacity (kw) 15.0 The Installed Size is Deemed: More than Expected Less than Expected As Expected [x] [ ] [ ] CS1.6 Metering Comparison to appropriate Is metering installed to enable monitoring of energy consumption of refrigeration plant? Yes [ ] Recorded meter reading No [x] Install sub meters to monitor energy RRN: Page 23 of 38

24 Cooling Plant Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS2.2/d CL1.3 energy benchmarks Refrigeration Leaks Refrigeration Is the refrigeration plant connected to a BEMS that can provide out of range alarms? Are there any records of air conditioning plant usage or sub-metered energy consumption with expected hours of use per year for the plant? Is the energy consumption or hours of use excessive? used by refrigeration equipment Yes [ ] No [x] Not applicable to this system Yes [ ] No [x] no records available Yes [ ] No [x] System runs 24 hrs in server room Are there any signs of a refrigerant leak? Yes [ ] No [x] no signs of refrigerant residue on the ground or under the unit Assess the refrigeration compressor(s) and the method of refrigeration capacity control Refrigeration Temperature: Pre Compressor( C) 0 Post Compressor( C) 0 Ambient( C) 8 The Temperature is Deemed: More than Expected Less than Expected As Expected [ ] [ ] [x] Capacity control is with variable speed motor by inverter system Compressor was checked for operation and off air temperatures CS3.5 Water Cooled Chillers (Cooling Towers & Evaporative Condensers) Is the water flow through cooling towers or evaporative coolers even and efficient, and there is no loss of water? Is there a management regime in place to ensure that water is regularly checked and treated to ensure that there is no Legionella risk? Yes [ ] No [x] not applicable to this system Yes [ ] No [x] not applicable to this system RRN: Page 24 of 38

25 Cooling Plant Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations Humidity Control Is there separate equipment installed for humidity control? Yes [x] No [ ] Clivet system includes humidity RRN: Page 25 of 38

26 Air Handling Systems: Note: For safety reasons, it will be necessary for air handling fans in air distribution systems to be turned off in order to gain access inside air handlers or ductwork to examine components such as fans, drives, filters, heat exchangers and control dampers. The building manager should arrange safe access for the inspector. RRN: Page 26 of 38

27 Terminal Units: Terminal Unit Equipment Inspection Unit Identifier VOL001/SYS001 Component Identifier VOL001/SYS001/TU001 Description of Unit Packaged split system Identify Cooling Plant Serving Terminal Unit VOL001/SYS001 Manufacturer Daikin Year Terminal Unit Installed 2010 Terminal Unit Location false ceiling Area Served police office Note below any discrepancy between information provided by client and on site information collected, or any information of additional relevance to the terminal unit/system: All data collected on site RRN: Page 27 of 38

28 This section applies to the following unit:vol001/sys001/tu001 Terminal Unit Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS4.1 Insulation Is the pipework adequately insulated? Yes [x] No [ ] insulation is adequate Is the ductwork adequately insulated? Yes [x] No [ ] ducting is adequate CS4.2 Unit Condition Are the terminal units in good working order? Yes [x] No [ ] units are in good condition CS5.1 CS5.2 CS5.3 CS5.4 CS5.5 Grilles & Air Flow Diffuser Positions Do air delivery openings provide good distribution? Yes [x] No [ ] vents are evenly spaced across the ceiling Is there evidence of tampering with diffusers? Yes [ ] No [x] They were as designed Are chilled and hot water being supplied to terminals simultaneously? Are there are any records of occupant complaints regarding air distribution Is there potential for air to short-circuit from supply to extract? Is the position of partitioning or furniture adversely affecting performance? Yes [ ] No [x] Not applicable to this system Yes [ ] No [x] no records available Yes [ ] No [x] vents are evenly spaced across room Yes [ ] No [x] open plan office Is the control and operation adequate? Yes [x] No [ ] control is adequate RRN: Page 28 of 38

29 Terminal Unit Equipment Inspection Unit Identifier VOL001/SYS002 Component Identifier VOL001/SYS002/TU001 Description of Unit Packaged Split System Identify Cooling Plant Serving Terminal Unit VOL001/SYS002 Manufacturer Hitachi Year Terminal Unit Installed 1998 Terminal Unit Location right hand wall Area Served It repair room Note below any discrepancy between information provided by client and on site information collected, or any information of additional relevance to the terminal unit/system: collected on site RRN: Page 29 of 38

30 This section applies to the following unit:vol001/sys002/tu001 Terminal Unit Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS4.1 Insulation Is the pipework adequately insulated? Yes [x] No [ ] insulation is adequate Is the ductwork adequately insulated? Yes [ ] No [x] Not applicable to this system CS4.2 Unit Condition Are the terminal units in good working order? Yes [x] No [ ] Filters are clean and unit is in good condition and working CS5.1 CS5.2 CS5.3 CS5.4 CS5.5 Grilles & Air Flow Diffuser Positions Do air delivery openings provide good distribution? Yes [x] No [ ] Louvres on unit are adequate Is there evidence of tampering with diffusers? Yes [ ] No [x] They were as designed Are chilled and hot water being supplied to terminals simultaneously? Are there are any records of occupant complaints regarding air distribution Is there potential for air to short-circuit from supply to extract? Is the position of partitioning or furniture adversely affecting performance? Yes [ ] No [x] Not applicable to this system Yes [ ] No [x] no records available Yes [ ] No [x] not applicable to this system Yes [ ] No [x] open plan office Is the control and operation adequate? Yes [x] No [ ] control is adequate RRN: Page 30 of 38

31 Terminal Unit Equipment Inspection Unit Identifier VOL001/SYS003 Component Identifier VOL001/SYS003/TU001 Description of Unit Packaged split system ducted Identify Cooling Plant Serving Terminal Unit VOL001/SYS003 Manufacturer Isovel Year Terminal Unit Installed 2002 Terminal Unit Location Free standing Cabinet unit in area Area Served Main server room Note below any discrepancy between information provided by client and on site information collected, or any information of additional relevance to the terminal unit/system: as asset list RRN: Page 31 of 38

32 This section applies to the following unit:vol001/sys003/tu001 Terminal Unit Detailed Inspection Notes Item Ref Item Inspection Item Finding Notes and Recommendations CS4.1 Insulation Is the pipework adequately insulated? Yes [ ] No [x] Not applicable to this system Is the ductwork adequately insulated? Yes [x] No [ ] insulation is adequate CS4.2 Unit Condition Are the terminal units in good working order? Yes [ ] No [x] not applicable to this system CS5.1 CS5.2 CS5.3 CS5.4 CS5.5 Grilles & Air Flow Diffuser Positions Do air delivery openings provide good distribution? Yes [x] No [ ] vents are evenly spaced across the floor Is there evidence of tampering with diffusers? Yes [ ] No [x] They were as designed Are chilled and hot water being supplied to terminals simultaneously? Are there are any records of occupant complaints regarding air distribution Is there potential for air to short-circuit from supply to extract? Is the position of partitioning or furniture adversely affecting performance? Yes [ ] No [x] Not applicable to this system Yes [ ] No [x] no records available Yes [ ] No [x] vents are evenly spaced across room Yes [ ] No [x] open plan office Is the control and operation adequate? Yes [x] No [ ] control is adequate RRN: Page 32 of 38

33 System Controls: System Controls Item Ref Inspection Item Finding Notes and Recommendations n/a Sub System Identifier (if applicable) VOL001/SYS001 CS8.1 CS8.2 CS8.3/a Is the zoning appropriate in relation to anticipated cooling demand? Note the current indicated weekday and time of day on controllers or BMS against the actual time. Note the set on and off periods (for weekday and weekend if this facility is available with the timer). Yes [x] No [ ] zoning is adequate for office actual time Control can be set, but is operated manually Implement a day and time off schedule as it best practice to rely on the system to respond to any cooling or heating demands in the treated areas rather than staff. This is because the system will respond faster and will need to operate for less time to bring temperatures to the optimal levels. This can be extremely wasteful way of operating equipment especially if staff fail to switch off equipment when not required CS8.3/b Is there a shortfall in timer capabilities? Yes [ ] No [x] Control features are adequate CS8.4 CS8.5 CS8.6 CS8.7 CS8.8 Identify and assess zone heating and cooling temperature control sensors. Are the sensor types and locations appropriate in relation to heating and cooling emitters, heat flows or likely temperature distributions in the zone or space? Note the set temperature in each zone for heating and cooling in relation to the activities and occupancy of zones and spaces in relation to the manager's intent. Note whether a 'dead band' is, or can be, set between heating and cooling. Do the sub system controls integrate effectively with the overall system control strategy? Assess the means of modulating or controlling air flow rate through the air supply and exhaust ducts. Yes [x] No [ ] Sensors are located in the ceiling cassette return air Temperature was set at 16c for office Deadband can be set on control Yes [ ] No [x] Modulation is controlled by an Increase office control temperature setting to its maximum where possible to increase efficiency A one degree increase in temperature setting will result in a 3% reduction of energy used. Recommendations for officetemperatures are 21c-23c source Material cibse Guide A Deadband should be set between 19c-24c (source material carbon trust CTG005) RRN: Page 33 of 38

34 System Controls Item Ref Inspection Item Finding Notes and Recommendations PS3.6 Are guidance notices visible or controls available to inhibit use of cooling equipment whilst windows are open or cooling/heating is on? Inverter system in outside unit Yes [ ] No [x] no warning were visible near the windows but windows are locked closed Place signs by windows to alert people about opening window while air conditioning is in operation and fit interlock to prevent windows being opened and while cooling is on RRN: Page 34 of 38

35 System Controls Item Ref Inspection Item Finding Notes and Recommendations n/a Sub System Identifier (if applicable) VOL001/SYS002 CS8.1 CS8.2 CS8.3/a Is the zoning appropriate in relation to anticipated cooling demand? Note the current indicated weekday and time of day on controllers or BMS against the actual time. Note the set on and off periods (for weekday and weekend if this facility is available with the timer). Yes [x] No [ ] zoning is adequate for repair office not set its in operation 24hrs Control can be set but is in operation 24hrs CS8.3/b Is there a shortfall in timer capabilities? Yes [x] No [ ] Control features are adequate CS8.4 CS8.5 CS8.6 CS8.7 CS8.8 PS3.6 Identify and assess zone heating and cooling temperature control sensors. Are the sensor types and locations appropriate in relation to heating and cooling emitters, heat flows or likely temperature distributions in the zone or space? Note the set temperature in each zone for heating and cooling in relation to the activities and occupancy of zones and spaces in relation to the manager's intent. Note whether a 'dead band' is, or can be, set between heating and cooling. Do the sub system controls integrate effectively with the overall system control strategy? Assess the means of modulating or controlling air flow rate through the air supply and exhaust ducts. Are guidance notices visible or controls available to inhibit use of cooling equipment Yes [x] No [ ] Sensor is located in the return side of wall cassette Temperature was set at 21c for the server repair office no dead band Yes [ ] No [x] start stop motor single speed dead band is not applicable replace system with inverter compressor Yes [ ] No [x] no warning were visible near the windows RRN: Page 35 of 38

36 System Controls Item Ref Inspection Item Finding Notes and Recommendations whilst windows are open or cooling/heating is on? RRN: Page 36 of 38

37 System Controls Item Ref Inspection Item Finding Notes and Recommendations n/a Sub System Identifier (if applicable) VOL001/SYS003 CS8.1 CS8.2 CS8.3/a Is the zoning appropriate in relation to anticipated cooling demand? Note the current indicated weekday and time of day on controllers or BMS against the actual time. Note the set on and off periods (for weekday and weekend if this facility is available with the timer). Yes [x] No [ ] zoning is adequate for office 13.29pm actual time was 14.33pm Control is full automated CS8.3/b Is there a shortfall in timer capabilities? Yes [ ] No [x] Control features are adequate and designed for this area CS8.4 CS8.5 CS8.6 CS8.7 CS8.8 Identify and assess zone heating and cooling temperature control sensors. Are the sensor types and locations appropriate in relation to heating and cooling emitters, heat flows or likely temperature distributions in the zone or space? Note the set temperature in each zone for heating and cooling in relation to the activities and occupancy of zones and spaces in relation to the manager's intent. Note whether a 'dead band' is, or can be, set between heating and cooling. Do the sub system controls integrate effectively with the overall system control strategy? Assess the means of modulating or controlling air flow rate through the air supply and exhaust ducts. Yes [x] No [ ] Sensors are located in the ceiling return ducts Design temperature is set for 21.5c for this server room Control set to maintain 21.5c in server room Yes [ ] No [x] Modulation is controlled by a variable speed fan RRN: Page 37 of 38

38 System Controls Item Ref Inspection Item Finding Notes and Recommendations PS3.6 Are guidance notices visible or controls available to inhibit use of cooling equipment whilst windows are open or cooling/heating is on? Yes [ ] No [x] not applicable to this system as windows do not open to ambient air RRN: Page 38 of 38