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Four Seasons Hotel Park Lane, London BMS Specification Reference No: 07/105 Date: January 2009 Rev: B A i.d.a. BUILDING SERVICES CONSULTING ENGINEERS Thames House 30 High Street Kingston-upon-Thames Surrey KT1 1HL Tel: + 44 (0)20 8241 2076 Fax: + 44 (0)20 8241 2164

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  • Four Seasons Hotel Park Lane, London

    BMS Specification

    Reference No: 07/105

    Date: January 2009

    Rev: BA

    i.d.a.

    BUILDING SERVICES CONSULTING ENGINEERS

    Thames House 30 High Street

    Kingston-upon-Thames Surrey

    KT1 1HL Tel: + 44 (0)20 8241 2076 Fax: + 44 (0)20 8241 2164

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 2 of 137

    REVISIONS

    REVISION PREPARED BY:

    Gary Hall

    CHECKED BY:

    John McIntosh

    APPROVED BY:

    Philip Davies

    00 ISSUE DATE: 15/01/09

    ISSUED TO: Beck Interiors

    PURPOSE OF ISSUE:

    Costing Purposes

    REVISION PREPARED BY:

    David Glossop

    CHECKED BY:

    John McIntosh

    APPROVED BY:

    Philip Davies

    A ISSUE DATE: 27/01/09

    ISSUED TO: Beck Interiors

    PURPOSE OF ISSUE: Costing Purposes

    REVISION PREPARED BY:

    David Glossop

    CHECKED BY:

    Philip Davies

    APPROVED BY:

    B ISSUE DATE: 5/03/2009

    ISSUED TO: Beck Interiors

    PURPOSE OF ISSUE: Costing Purposes

    REVISION PREPARED BY:

    CHECKED BY:

    APPROVED BY:

    ISSUE DATE:

    ISSUED TO:

    PURPOSE OF ISSUE:

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 3 of 137

    CONTENTS 1 GENERAL ...................................................................................................................... 10

    1.1 Introduction ............................................................................................................. 101.2 Standards ............................................................................................................... 101.3 Project Overview .................................................................................................... 111.4 BMS Scope of Works ............................................................................................. 11

    2 TECHNICAL REQUIREMENTS .................................................................................... 122.1 General ................................................................................................................... 122.2 Qualifications for Tender Submittal ........................................................................ 132.3 Information to be Submitted for Comment .............................................................. 132.4 BMS Architecture .................................................................................................... 14

    2.4.1 Overall Description .......................................................................................... 142.4.2 General ............................................................................................................ 142.4.3 Network ........................................................................................................... 152.4.4 Third-Party Interfaces ...................................................................................... 152.4.5 Uninterruptible Power Supply (UPS) ............................................................... 162.4.6 Power Fail/Auto Restart .................................................................................. 162.4.7 Downloading and Uploading ........................................................................... 16

    2.5 Operator PCs .......................................................................................................... 162.6 Servers ................................................................................................................... 172.7 Operator Interface .................................................................................................. 18

    2.7.1 General ............................................................................................................ 182.7.2 Navigation Trees ............................................................................................. 192.7.3 Dividable Display Screens ............................................................................... 192.7.4 Alarms ............................................................................................................. 192.7.5 Reports ............................................................................................................ 202.7.6 Dynamic Colour Graphics ............................................................................... 202.7.7 Schedules ........................................................................................................ 212.7.8 Historical Trending and Data Collection .......................................................... 212.7.9 Paging ............................................................................................................. 22

    2.8 Intelligent Controllers or Outstations ...................................................................... 222.9 Point Capability ....................................................................................................... 232.10 Spare Point Capacity .............................................................................................. 242.11 Expansion ............................................................................................................... 242.12 Distributed Processing ............................................................................................ 242.13 System Networking ................................................................................................. 242.14 Field Devices .......................................................................................................... 24

    2.14.1 Sensors ........................................................................................................... 242.15 Control Valves ........................................................................................................ 26

    2.15.1 General ............................................................................................................ 262.15.2 Construction .................................................................................................... 262.15.3 Three-Port Control Valves ............................................................................... 272.15.4 Two-Port Control Valves ................................................................................. 272.15.5 Terminal Unit Control Valves ........................................................................... 272.15.6 Two-Port Isolation Valves ................................................................................ 282.15.7 Solenoid Valves ............................................................................................... 28

    2.16 Control Dampers .................................................................................................... 282.17 Actuators ................................................................................................................ 28

    3 PARTICULAR REQUIREMENTS .................................................................................. 303.1 Scope/Interface ...................................................................................................... 303.2 Hotel Management System .................................................................................... 31

    3.2.1 General ............................................................................................................ 313.2.2 Lift Monitoring .................................................................................................. 31

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 4 of 137

    3.3 Electrical Metering Monitoring ................................................................................ 313.4 Metering Monitoring (General) ................................................................................ 323.5 UPS System Monitoring ......................................................................................... 323.6 Chilled Water System ............................................................................................. 32

    3.6.1 Chillers ............................................................................................................ 323.6.2 CHW Primary Pumps ...................................................................................... 333.6.3 CHW Secondary Pumps (Ground, First & AHU Circuit) .................................. 343.6.4 CHW Secondary Pumps (Bedroom Circuit) .................................................... 363.6.5 CHW Pressurisation Sets ................................................................................ 37

    3.7 Condenser Water System ...................................................................................... 373.7.1 Dry Air Coolers ................................................................................................ 373.7.2 Condenser Water Pumps ................................................................................ 383.7.3 Condenser Water Pressurisation Set .............................................................. 39

    3.8 LTHW System ........................................................................................................ 403.8.1 Boilers ............................................................................................................. 403.8.2 LTHW Primary Pumps ..................................................................................... 413.8.3 LTHW Secondary Pumps (Circuit A) ............................................................... 423.8.4 LTHW Secondary Pumps (Circuit B) ............................................................... 433.8.5 LTHW Secondary Pumps (Circuit C) ............................................................... 453.8.6 LTHW Secondary Pumps (Circuit D) ............................................................... 463.8.7 LTHW Secondary Pumps (Circuit E Calorifiers) ........................................... 483.8.8 LTHW Pressurisation Sets .............................................................................. 49

    3.9 Public Health & Domestic Services ........................................................................ 493.9.1 Potable Water (Hard) Storage Tank ................................................................ 493.9.2 Potable Water (Hard) Booster Set ................................................................... 503.9.3 Potable Water (Softened) Storage Tank ......................................................... 503.9.4 Potable Water (Softened) Booster Sets .......................................................... 503.9.5 Irrigation System Booster Set .......................................................................... 513.9.6 Grease Trap Booster Set ................................................................................ 513.9.7 Loading Dock Wash down Booster Set ........................................................... 523.9.8 Warning Pipe Alarm System ........................................................................... 523.9.9 Water Meters ................................................................................................... 523.9.10 HWS System Circulators ................................................................................. 523.9.11 Basement Sump Pumps .................................................................................. 533.9.12 Ground Floor Vacuum Waste Hot Water Pump .............................................. 533.9.13 Water Douche ................................................................................................. 533.9.14 Packaged Water System for Spa and Drench Shower.................................... 543.9.15 Packaged Water System for Window Wash. ................................................... 543.9.16 Water Softening Plant ..................................................................................... 543.9.17 Bulk Salt Storage Tank .................................................................................... 55

    3.10 Misting System ....................................................................................................... 553.10.1 Misting Storage Tank ...................................................................................... 553.10.2 Misting Pump Sets .......................................................................................... 553.10.3 Misting and Sprinkler Zone Test Pumps ........................................................ 563.10.4 Sprinkler Fire Service Zone Pumps ................................................................. 56

    3.11 Combined Heating & Power (CHP) System ........................................................... 563.11.1 General ............................................................................................................ 563.11.2 Normal Operation ............................................................................................ 563.11.3 Emergency Operation ..................................................................................... 573.11.4 CHP Dry Air Cooler ......................................................................................... 573.11.5 CHP Condenser Pumps .................................................................................. 58

    3.12 Ventilation System .................................................................................................. 593.12.2 FOH Ground Floor AHU .................................................................................. 603.12.3 FOH Ground Floor Humidifier ......................................................................... 623.12.4 BOH Basement and Ground Floor AHU .......................................................... 63

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 5 of 137

    3.12.5 BOH Ground Floor & Mezzanine Extract Fan ................................................. 653.12.6 Communications Riser AHU ............................................................................ 663.12.7 Communications Riser Extract Fan ................................................................. 693.12.8 Laundry AHU ................................................................................................... 703.12.9 Laundry Extract Fan A ..................................................................................... 723.12.10 Laundry Dryer Extract Fan B ....................................................................... 733.12.11 Sub-Basement Plantroom AHU ................................................................... 743.12.12 Sub-Basement Plantroom Extract Fan ........................................................ 763.12.13 Basement Offices/Stores AHU .................................................................... 773.12.14 Basement BOH Offices & Stores Extract Fan.............................................. 803.12.15 CHP Plantroom Supply Fan ......................................................................... 813.12.16 CHP Plantroom Extract Fan ........................................................................ 823.12.17 Carpark Supply Fan ..................................................................................... 833.12.18 Carpark Extract Fan ..................................................................................... 853.12.19 Ground Floor Kitchen AHU .......................................................................... 863.12.20 Ground Floor Kitchen Extract Fan ............................................................... 883.12.21 First Floor Kitchen AHU ............................................................................... 903.12.22 First Floor Kitchen Extract Fan .................................................................... 923.12.23 Ballroom AHU .............................................................................................. 933.12.24 Ballroom Humidifier ..................................................................................... 953.12.25 First Floor FOH AHU ................................................................................... 963.12.26 First Floor FOH Humidifier ........................................................................... 983.12.27 10th Floor Spa AHU ...................................................................................... 993.12.28 10th Floor Spa Extract Fan ......................................................................... 1023.12.29 Spa Pool AHU ............................................................................................ 1033.12.30 Spa Pool Extract Fan ................................................................................. 1053.12.31 Guestroom Fresh Air Supply (North) AHU ................................................. 1063.12.32 Guestroom Extract (North) Fan ................................................................. 1093.12.33 Guestroom Fresh Air Supply (South) AHU ................................................ 1103.12.34 Guestroom Extract (South) Fan ................................................................. 1123.12.35 Public Toilets Extract Fan (First Floor) ...................................................... 1133.12.36 Basement BOH Extract Fan ...................................................................... 1143.12.37 Basement Toilets & Changing Areas Extract Fan ...................................... 1153.12.38 Mezzanine Toilets Extract Fan .................................................................. 1163.12.39 Toilets (10th Floor) Extract Fan .................................................................. 1173.12.40 Overdoor Heaters ...................................................................................... 117

    3.13 Spa Pool Systems ................................................................................................ 1173.13.1 Steam and Sauna Rooms ............................................................................. 118

    3.14 Miscellaneous Systems ........................................................................................ 1183.14.1 10th Floor Underfloor Heating ........................................................................ 1183.14.2 Basement Computer Room DX Unit ............................................................. 1183.14.3 Basement Substation Downflow Units .......................................................... 1193.14.4 Basement LV/UPS Room Downflow Units .................................................... 1203.14.5 Basement Emergency Lighting Inverter Room Downflow Units .................... 1203.14.6 Basemnet Computer Room Downflow Units ................................................. 1203.14.7 Ground Floor AV Room Downflow Unit ......................................................... 1203.14.8 First Floor IT/AV Room Downflow Unit .......................................................... 1213.14.9 Tenth Floor Comms Room Downflow Unit .................................................... 1213.14.10 Kitchen Cooler & Freezer .......................................................................... 1213.14.11 Irrigation Systems ...................................................................................... 121

    3.15 Plant and Gas Safety Systems ............................................................................. 1223.15.1 Plantroom Emergency Controls .................................................................... 1223.15.2 Local Emergency Stop Controls .................................................................... 1223.15.3 Master Gas Supply Shut-Off ......................................................................... 1223.15.4 Gas Boosters ................................................................................................. 122

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 6 of 137

    3.15.5 Boiler Gas Supply Shut-Off ........................................................................... 1223.15.6 Gas Detection System ................................................................................... 1233.15.7 Refrigerant Gas Detection System ................................................................ 1233.15.8 Kitchen Emergency Controls ......................................................................... 123

    3.16 Life Safety Systems .............................................................................................. 1233.16.1 Fire Alarm Interfacing .................................................................................... 1233.16.2 Spa Area post fire Smoke Removal System ................................................. 1243.16.3 Gas Suppression System .............................................................................. 124

    3.17 Gas Extract Fans .................................................................................................. 1243.18 MCC Panels ......................................................................................................... 1243.19 Appendices ........................................................................................................... 133

    3.19.1 Drawing list .................................................................................................... 1333.19.2 MCC Schedules ............................................................................................ 137

    1 GENERAL ........................................................................................................................ 71.1 Introduction ............................................................................................................... 71.2 Standards ................................................................................................................. 71.3 Project Overview ...................................................................................................... 81.4 BMS Scope of Works ............................................................................................... 8

    2 TECHNICAL REQUIREMENTS ...................................................................................... 92.1 General ..................................................................................................................... 92.2 Qualifications for Tender Submittal ........................................................................ 102.3 Information to be Submitted for Comment .............................................................. 102.4 BMS Architecture .................................................................................................... 11

    2.4.1 Overall Description .......................................................................................... 112.4.2 General ............................................................................................................ 112.4.3 Network ........................................................................................................... 122.4.4 Third-Party Interfaces ...................................................................................... 122.4.5 Uninterruptible Power Supply (UPS) ............................................................... 132.4.6 Power Fail/Auto Restart .................................................................................. 132.4.7 Downloading and Uploading ........................................................................... 13

    2.5 Operator PCs .......................................................................................................... 132.6 Servers ................................................................................................................... 142.7 Operator Interface .................................................................................................. 15

    2.7.1 General ............................................................................................................ 152.7.2 Navigation Trees ............................................................................................. 162.7.3 Dividable Display Screens ............................................................................... 162.7.4 Alarms ............................................................................................................. 162.7.5 Reports ............................................................................................................ 172.7.6 Dynamic Colour Graphics ............................................................................... 172.7.7 Schedules ........................................................................................................ 182.7.8 Historical Trending and Data Collection .......................................................... 182.7.9 Paging ............................................................................................................. 19

    2.8 Intelligent Controllers or Outstations ...................................................................... 192.9 Point Capability ....................................................................................................... 202.10 Spare Point Capacity .............................................................................................. 202.11 Expansion ............................................................................................................... 212.12 Distributed Processing ............................................................................................ 212.13 System Networking ................................................................................................. 212.14 Field Devices .......................................................................................................... 21

    2.14.1 Sensors ........................................................................................................... 212.15 Control Valves ........................................................................................................ 22

    2.15.1 General ............................................................................................................ 232.15.2 Construction .................................................................................................... 232.15.3 Three-Port Control Valves ............................................................................... 232.15.4 Two-Port Control Valves ................................................................................. 23

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 7 of 137

    2.15.5 Terminal Unit Control Valves ........................................................................... 242.15.6 Two-Port Isolation Valves ................................................................................ 242.15.7 Solenoid Valves ............................................................................................... 24

    2.16 Control Dampers .................................................................................................... 252.17 Actuators ................................................................................................................ 25

    3 PARTICULAR REQUIREMENTS .................................................................................. 273.1 Scope/Interface ...................................................................................................... 273.2 Hotel Management System .................................................................................... 28

    3.2.1 General ............................................................................................................ 283.2.2 Lift Monitoring .................................................................................................. 28

    3.3 Electrical Metering Monitoring ................................................................................ 283.4 Metering Monitoring (General) ................................................................................ 293.5 UPS System Monitoring ......................................................................................... 293.6 Chilled Water System ............................................................................................. 29

    3.6.1 Chillers ............................................................................................................ 293.6.2 CHW Primary Pumps ...................................................................................... 303.6.3 CHW Secondary Pumps (Ground, First & AHU Circuit) .................................. 313.6.4 CHW Secondary Pumps (Bedroom Circuit) .................................................... 333.6.5 CHW Pressurisation Sets ................................................................................ 34

    3.7 Condenser Water System ...................................................................................... 343.7.1 Dry Air Coolers ................................................................................................ 343.7.2 Condenser Water Pumps ................................................................................ 353.7.3 Condenser Water Pressurisation Set .............................................................. 36

    3.8 LTHW System ........................................................................................................ 373.8.1 Boilers ............................................................................................................. 373.8.2 LTHW Primary Pumps ..................................................................................... 383.8.3 LTHW Secondary Pumps (Circuit A) ............................................................... 393.8.4 LTHW Secondary Pumps (Circuit B) ............................................................... 403.8.5 LTHW Secondary Pumps (Circuit C) ............................................................... 413.8.6 LTHW Secondary Pumps (Circuit D) ............................................................... 433.8.7 LTHW Secondary Pumps (Circuit E Calorifiers) ........................................... 443.8.8 LTHW Pressurisation Sets .............................................................................. 46

    3.9 Public Health & Domestic Services ........................................................................ 463.9.1 Potable Water (Hard) Storage Tank ................................................................ 463.9.2 Potable Water (Hard) Booster Set ................................................................... 473.9.3 Potable Water (Softened) Storage Tank ......................................................... 473.9.4 Potable Water (Softened) Booster Sets .......................................................... 473.9.5 Irrigation System Booster Set .......................................................................... 483.9.6 Grease Trap Booster Set ................................................................................ 483.9.7 Loading Dock Washdown Booster Set ............................................................ 493.9.8 Warning Pipe Alarm System ........................................................................... 493.9.9 Water Meters ................................................................................................... 493.9.10 HWS System Circulators ................................................................................. 493.9.11 Basement Sump Pumps .................................................................................. 50

    3.10 Misting System ....................................................................................................... 503.10.1 Misting Storage Tank ...................................................................................... 503.10.2 Misting Pump Sets .......................................................................................... 50

    3.11 Combined Heating & Power (CHP) System ........................................................... 513.11.1 General ............................................................................................................ 513.11.2 Normal Operation ............................................................................................ 513.11.3 Emergency Operation ..................................................................................... 523.11.4 CHP Dry Air Cooler ......................................................................................... 523.11.5 CHP Condenser Pumps .................................................................................. 53

    3.12 Ventilation System .................................................................................................. 543.12.2 FOH Ground Floor AHU .................................................................................. 55

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 8 of 137

    3.12.3 FOH Ground Floor Humidifier ......................................................................... 573.12.4 BOH Basement and Ground Floor AHU .......................................................... 583.12.5 BOH Ground Floor & Mezzanine Extract Fan ................................................. 603.12.6 Communications Riser AHU ............................................................................ 613.12.7 Communications Riser Extract Fan ................................................................. 633.12.8 Laundry AHU ................................................................................................... 643.12.9 Laundry Extract Fan A ..................................................................................... 663.12.10 Laundry Dryer Extract Fan B ....................................................................... 673.12.11 Sub-Basement Plantroom AHU ................................................................... 693.12.12 Sub-Basement Plantroom Extract Fan ........................................................ 713.12.13 Basement Offices/Stores AHU .................................................................... 723.12.14 Basement BOH Offices & Stores Extract Fan.............................................. 743.12.15 CHP Plantroom Supply Fan ......................................................................... 753.12.16 CHP Plantroom Extract Fan ........................................................................ 763.12.17 Carpark Supply Fan ..................................................................................... 773.12.18 Carpark Extract Fan ..................................................................................... 793.12.19 Ground Floor Kitchen AHU .......................................................................... 803.12.20 Ground Floor Kitchen Extract Fan ............................................................... 823.12.21 First Floor Kitchen AHU ............................................................................... 833.12.22 First Floor Kitchen Extract Fan .................................................................... 853.12.23 Ballroom AHU .............................................................................................. 863.12.24 Ballroom Humidifier ..................................................................................... 883.12.25 First Floor FOH AHU ................................................................................... 893.12.26 First Floor FOH Humidifier ........................................................................... 913.12.27 10th Floor Spa AHU ...................................................................................... 923.12.28 10th Floor Spa Extract Fan ........................................................................... 943.12.29 Spa Pool AHU .............................................................................................. 953.12.30 Spa Pool Extract Fan ................................................................................... 973.12.31 Guestroom Fresh Air Supply (North) AHU ................................................... 983.12.32 Guestroom Extract (North) Fan ................................................................. 1003.12.33 Guestroom Fresh Air Supply (South) AHU ................................................ 1013.12.34 Guestroom Extract (South) Fan ................................................................. 1033.12.35 Public Toilets Extract Fan (First Floor) ...................................................... 1043.12.36 Basement BOH Extract Fan ...................................................................... 1053.12.37 Basement Toilets & Changing Areas Extract Fan ...................................... 1063.12.38 Mezzanine Toilets Extract Fan .................................................................. 1073.12.39 Toilets (10th Floor) Extract Fan .................................................................. 1073.12.40 Overdoor Heaters ...................................................................................... 108

    3.13 Spa Pool Systems ................................................................................................ 1083.13.1 Steam and Sauna Rooms ............................................................................. 108

    3.14 Miscellaneous Systems ........................................................................................ 1093.14.1 10th Floor Underfloor Heating ........................................................................ 1093.14.2 Basement Computer Room DX Unit ............................................................. 1093.14.3 Basement Substation Downflow Units .......................................................... 1093.14.4 Basement LV/UPS Room Downflow Units .................................................... 1093.14.5 Basement Emergency Lighting Inverter Room Downflow Units .................... 1103.14.6 Basemnet Computer Room Downflow Units ................................................. 1103.14.7 Ground Floor AV Room Downflow Unit ......................................................... 1103.14.8 First Floor IT/AV Room Downflow Unit .......................................................... 1103.14.9 Tenth Floor Comms Room Downflow Unit .................................................... 1113.14.10 Kitchen Cooler & Freezer .......................................................................... 1113.14.11 Irrigation Systems ...................................................................................... 111

    3.15 Plant and Gas Safety Systems ............................................................................. 1113.15.1 Plantroom Emergency Controls .................................................................... 1113.15.2 Local Emergency Stop Controls .................................................................... 111

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 9 of 137

    3.15.3 Master Gas Supply Shut-Off ......................................................................... 1123.15.4 Gas Boosters ................................................................................................. 1123.15.5 Boiler Gas Supply Shut-Off ........................................................................... 1123.15.6 Gas Detection System ................................................................................... 1123.15.7 Refrigerant Gas Detection System ................................................................ 1123.15.8 Kitchen Emergency Controls ......................................................................... 113

    3.16 Life Safety Systems .............................................................................................. 1133.16.1 Fire Alarm Interfacing .................................................................................... 1133.16.2 Spa Area post fire Smoke Removal System ................................................. 113

    3.17 MCC Panels ......................................................................................................... 1143.18 Appendices ........................................................................................................... 121

    3.18.1 Drawing list .................................................................................................... 1213.18.2 MCC Schedules ............................................................................................ 125

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 10 of 137

    1 GENERAL 1.1 Introduction This specification outlines the Technical and Particular requirements for the BMS package for the Four Seasons Hotel, Park Lane, London. It should be read in conjunction with all other specifications, equipment schedules and design documentation produced by ida for this project which together form a description of the requirements for the manufacture, supply and delivery to site, erection, testing, setting to work and commissioning of all relevant systems, equipment, accessories and controls. 1.2 Standards Installations standards The complete services installations and components shall, unless stated otherwise, comply with the following current standards and requirements where applicable:

    British standard specification (BS) and European standards (BS EN).

    British standard code of practice (BSCP).

    CIBSE guide to current practice.

    Institute of Electrical Engineers regulations (IEE) (BS7671).

    Institute of plumbing design guide (IOP).

    Water Regulations 1999.

    The Building Regulations.

    Loss prevention council (LPC).

    Local fire brigade requirements.

    Local by-laws and/or regulations.

    Manufacturers instructions and recommendations for installation and testing of specified equipment material.

    Gas Regulations.

    Health and safety at work act.

    CDM regulations.

    Electrical Supply Regulations 1988.

    Clean Air Acts.

    Four Seasons Hotels & Resorts Design Standards.

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 11 of 137

    Requirements of DDA.

    Sanitation BS/EN 12056 Pt 2.

    Rainwater BS/EN 12056 Pt 3.

    Sprinklers BS12845.

    Dry Riser BS 9990 (2006).

    Identification of pipe lines BS 1710.

    Temperature Valves BS 6283 Pt 2 1991.

    Internal water for domestic use BS6700 (2006).

    NFPA 1750.

    BRE Guide to water misting 2006.

    FIA COP for design and installation of misting systems (2008).

    1.3 Project Overview The project involves the complete refurbishment of the Four Seasons Hotel located in Park Lane, which comprises sub-basement (-2) to 11th floors. The basement levels include car park, staff areas, toilets and various M&E plant rooms. Level 0 shall include entrance lobby, lounge, restaurants, new kitchen, bar and toilets. Level 1 shall include existing kitchen, conference /meeting rooms and ballroom. Levels 2 to 9 shall include a total of approximately 180 guest rooms comprising a mixture of en-suite bedrooms and suites and Royal Suite at level 9. Level 10 shall include Spa area, Waiting area, Early Arrivals, Gym and external M & E plant. Level 11 shall include various internal and external M & E plant rooms. 1.4 BMS Scope of Works The scope of works for the BMS Contract includes:

    a. Design, supply, installation, testing and commissioning of all hardware (including but not necessarily limited to, BMS outstations, valves, actuators and sensors), software, controls wiring and containment to field devices and plant from control enclosures/MCCs for the BMS.

    b. Transportation, off-loading, craneage and moving into position of all of the above.

    c. Factory test control panels and issue full Test Reports and Certificates.

  • Four Seasons Hotel, Park Lane, London

    BMS Specification - Page 12 of 137

    d. Commission the complete system on site to an agreed programme.

    e. Services visits at 6 and 12 months after commissioning.

    f. Warranty the works for 12 months from date of issue of the Certificate of Practical Completion.

    g. Provide details and drawings defined in the Preliminaries section.

    h. Provide Operating & Maintenance (O&M) documentation, as defined in the

    Preliminaries section.

    i. Provide one original set of application and system software on original media. Disks to bear manufacturers label.

    j. Original issue copies of software to include operating systems, custom programming

    language, application generation, graphic support, maintenance support, operator workstation or web server software, and other utilities provided in support of installed system.

    k. Include for closely leasing with the Fire Protection system Contractor, InnCom,

    Mechanical and Electrical Works Contractors and all other associated Trade Contractors.

    l. Instruct Employers Staff on operating and maintenance procedures. This shall

    include instruction and training of not less than five (5) days during cooling season and five (5) days during heating season.

    m. Prior to Practical Completion of the Project, the Trade Contractor shall carry out a full

    clean of the works. 2 TECHNICAL REQUIREMENTS 2.1 General The Contractor shall supply and install an intelligent micro-processor based direct digital control system (DDC). Acceptable providers include: Honeywell (Excel 5000), Johnson Controls (Metasys) and Siemens Building Technologies (Apogee). The BMS is to include a high-speed, peer-to-peer network of microcomputer based Direct Digital Control (DDC) controllers with web-based operator interface. The Contractor shall furnish all materials, including all computer hardware and software, operator input / output peripherals, field hardware panels, sensors and field control devices, power wiring and containment, control wiring and containment and O & M documentation. The Contractor shall be responsible for design, engineering, supervision of installation, labour services, system calibration, software programming, system checkout, commissioning and demonstrating, all necessary to provide a complete and fully operational system as specified. The hardware supplied shall consist of physical components that are built to established industry standards, which support the communications scheme of this system and do not require customisation to meet the requirements of the Specification.

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    BMS Specification - Page 13 of 137

    All hardware and software provided under this Contract normally shall be held in the inventory of both the manufacturer and the installing Contractor and shall be considered items of standard manufacture. Devices that are currently out of production or are being phased out of production within a twenty-four month period from the date of this document shall not be considered for this project. 2.2 Qualifications for Tender Submittal The Contractor shall have a minimum of five years experience in the design, engineering, installation and programming of micro-processor based building control systems and should have completed five projects of similar complexity within the preceding five years, employing certified controls engineers and technicians experienced in this type of work. The Contractor shall submit a project organisation chart detailing the experience and qualifications of the personnel to be involved. The following technical information shall be submitted for the Engineers review at Tender stage:

    a. Network schematic (detailing all computer hardware, interfaces, locations and cable specification).

    b. Equipment Schedule (listing computer hardware and software, control sensors and

    devices).

    c. Motor Control Panel Schedule (listing panel specification, switchgear, switches, lamps and all other equipment being provided).

    d. Electrical Installation Schedule (listing for both power and control cables, the

    proposed method of containment and cable type used). 2.3 Information to be Submitted for Comment The following information shall be submitted for the Engineers comment, prior to manufacture and installation:

    a. Motor control panel layouts and wiring diagrams.

    b. Controls description of operation.

    c. Controller flow diagrams.

    d. Network schematic.

    e. Front-end colour graphics pages.

    f. Technical details of panel-mounted equipment.

    g. Control valve schedule (differential pv, kv, kvs, Pv, DN, differential pmax valve, differential pmax actuator).

    h. Schedule of proposed set-point values.

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    BMS Specification - Page 14 of 137

    i. Schedule of alarms and priorities (text, actions following).

    j. Schedule of limit values.

    k. Schedule of password settings.

    l. Commissioning method statement.

    m. Completed commissioning point checklist, prior to demonstration.

    n. Specification of front-end terminal equipment.

    o. BMS Input / Output point schedule. 2.4 BMS Architecture 2.4.1 Overall Description The BMS shall be designed entirely for use on intranets and internets. All networking technology used at the Tier I level shall be off-the-shelf, industry standard technology fully compatible with other owner provided networks in the facility. The architecture of the BMS shall be modular permitting stepped expansion of application software, system peripherals and field hardware. All aspects of the user interface, whether to servers or to Tier 1 solid state devices, shall be via browsers. Any PCs used as operator interface points shall not require the purchase of any special software from the manufacturer in order to provide the complete user interface as described herein. The user interface will be complete, as described herein, providing complete tool sets, operational features, multi-panel displays and other display features. Systems which merely provide HTML based web pages as the operator interface will not be acceptable. The primary components of the system will be the Primary Application Nodes and Servers located at the highest level of the network architecture. Both will use the same user interface and provide the same level of accessibility via the network. The only distinction between the user interface used on servers, as compared to Primary Application Nodes, will be select menu items used for accessing long-term storage features on the servers or on their respective archive devices (CD / RW, etc.). 2.4.2 General The BMS shall consist of a number of Nodes and associated equipment connected by industry standard network practices. All communication between Nodes shall be by digital means only. The BMS network shall, at minimum, comprise of the following:

    a. Operator PCs fixed or portable.

    b. Network processing, data storage and communication equipment, including file servers.

    c. Routers, bridges, switches, hubs, modems and the like communications equipment.

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    d. Active processing Nodes including field panels.

    e. Intelligent and addressable elements and end devices.

    f. Third-party equipment interfaces.

    g. Other components required for a complete and working BMS.

    All BMS features shall be accessible via Enterprise Intranet and Internet browser with equivalent BMS access control for user access. The BMS shall support auto-dial / auto-answer communications to allow BMS Nodes to communicate with other remote BMS Nodes via standard telephone lines. Where no preference is indicated, DSL is the preferred grade. The PC Workstations, File servers and principal network equipment shall be standard products of recognised major manufacturers available through normal PC vendor channels. Clones are not acceptable. Provide licenses for all software residing in the BMS system and transfer these licenses to the Owner, prior to completion. 2.4.3 Network The BMS shall incorporate a primary Tier I network. At the Contractors option, the BMS may also incorporate integrated secondary Tier II and tertiary Tier III networks. The BMS Network shall utilise an open architecture capable of all of the following:

    a. Utilising standard Ethernet communications and operate at a minimum speed of 10 / 100 Mb/sec.

    b. Connecting via BACnet at the Tier I level in accordance with ANSI / ASHRAE

    Standard 135-2001.

    c. Connecting via LonMark as per ANS / EIA 709 (LonWorks) to LonMark FFT-10 transceivers at the Tier II level.

    The BMS network shall support both copper and optical fibre communication media. 2.4.4 Third-Party Interfaces 2.4.4.1 General BMS Contractor shall integrate real-time data from systems supplied by other trades. The BMS system shall include necessary BMS hardware equipment and software to allow data communications between the BMS system and systems supplied by other trades. The Trade Contractor supplying other systems will provide their necessary hardware and software and will co-operate fully with the BMS Contractor in a timely manner at their cost to ensure complete data integration.

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    2.4.4.2 InnCom System BMS Contractor shall integrate real-time data from systems supplied by the InnCom technical room management system. The InnCom central computer shall be installed the Hotel Engineers office in the basement. The BMS system shall include necessary BMS hardware equipment and software to allow data communications between the BMS system and the InnCom room management system. The Contractor supplying the InnCom room management system will provide their necessary hardware and software and will co-operate fully with the BMS Contractor in a timely manner at their cost to ensure complete data integration. 2.4.5 Uninterruptible Power Supply (UPS) The interface PCs, servers and other equipment shall be provided with a suitable UPS. The UPS shall be sized for 50% spare capacity. The UPS shall be complete with batteries, external bypass and line conditioning equipment. 2.4.6 Power Fail/Auto Restart Provide for the automatic orderly and pre-defined shutdown of parts or all of the BMS following total loss of power to parts or all of the BMS. Provide for automatic orderly and pre-defined start-up of parts or all of the BMS following total loss of power to those parts or all of the BMS. Archive and annunciate time and details of restoration. Provide for the orderly and pre-defined scheduling of controlled return to normal, automatically time scheduled, operation of controlled equipment as a result of the auto-re-start process. Maintain the BMS real-time clock operation during periods of power outage for a minimum of 72 hours. 2.4.7 Downloading and Uploading Provide the capability to generate BMS software-based sequences, database items and associated operational definition information and user-required revisions to same at any Operator PC and the means to download same to the associated Application Node. Application software tool used for the generation of custom logic sequences shall be resident in both the Application Node and the server(s) where indicated. Provide the capability to upload BMS operating software information, database items, sequences and alarms to the designated server. 2.5 Operator PCs The Operator PC (PCs) shall provide the primary means of communication with the BMS and shall be used for operations, engineering, management, audit, reporting and other related functions.

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    The PCs shall consist of fixed and portable units. The fixed units shall consist of installed PC-based configurations. The portable units shall consist of PC Laptop, or similar designed unit, complete with keyboard, or similar entry / selection device, complete with display and communication arrangements. Each fixed PC shall, at minimum, consist of:

    a. PC processor with minimum 64-bit word structure.

    b. Hard drive or equal high-speed data storage.

    c. Removable high-speed data storage and export device(s) such as Read / Write CD ROM, or equal.

    d. Full ASCII keyboard and digital Mouse or equal pointing device.

    e. Full colour, flat screen VDU display unit, minimum 17 diagonal screen, minimum

    1280 x 1024 resolution, 0.26 or better dot pitch and minimum 72 Hz refresh rate.

    f. Printers are as scheduled in the Particular Requirements. Printers shall be full colour as scheduled and designed for the functional requirements and duty of the application.

    g. All fixed PCs shall operate independently and concurrently without interference and

    under individual user password protection.

    h. PCs functionality shall be individually definable by software means such that PC may be designated for specific limited users and may also be readily re-designated to provide back-up to other Workstations in the system.

    i. Portable PC shall operate identically to the fixed PC.

    j. Fixed or portable PCs shall not require any special software to be purchased from

    the BMS manufacturer. All actions required for the complete operator interface, as described herein, shall be accomplished through a common browser.

    2.6 Servers The central server shall perform global application programs and data consolidation including communicating with controllers, obtaining data from field devices for central monitoring of building systems and transmitting instructions to controllers. The server shall have software routines for (but not limited to) : BMS server operation, database creation and storage, web based graphical user interface with generation and display of visual representations of building systems, report formulation, printing and presentation, alarm detection and reporting and event initiated programming. Access to all information on the server will be through the same user interface used to access individual nodes. When logged onto a server the operator will be able to also interact with any of the primary nodes in the facility. The hardware platform for servers will, at minimum, consist of:

    a. PC processor with minimum 64-bit word structure.

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    b. Minimum 2 GHz processor speed.

    c. Minimum 1 gigabyte on board ram.

    d. Hard drive or equal high-speed data storage, minimum 50 gigabytes.

    e. OS shall be Windows XP Professional.

    f. Removable high-speed data storage and export device(s) such as Read / Write CD

    ROM or approved equal.

    g. Full ASCII keyboard and digital Mouse, or equal pointing device.

    h. Full colour, flat screen VDU display unit, minimum 17 diagonal screen, minimum 1280 x 1024 resolution, 0.26 or better dot-pitch and minimum 72 Hz refresh rate.

    2.7 Operator Interface 2.7.1 General The BMS Operator Interface shall be user-friendly, readily understood and shall make maximum use of colours, graphics, icons, embedded images, animation, test-based information and data visualisation techniques to enhance and simplify the use and understanding of the BMS by authorised users at the Workstation. It shall be possible to designate any PC on the Tier I network as an Operator Interface point. No special software shall be needed to be purchased from the BMS manufacturer for any such PC. User access to the BMS shall be protected by a flexible and Client re-definable software based password access protection. Password protection shall be multi-level and partitionable to accommodate the varied access requirements of the different user groups. The system shall provide the means to define unique access privileges for each individual authorised user. Also provide the means to establish general password groups to which an individual will then be assigned. Once assigned to the group, each individual will assume all the capabilities and restrictions of that group. Provide the means to on-line manage password access control under the control of a Master Password. The user interface shall be able to combine data from any and all of the system components in a single browser window. This shall include historical data stored on a server. The Operator Interface shall incorporate comprehensive support for functions including, but not necessarily limited to, the following:

    a. User access for selective information retrieval and control command execution.

    b. Monitoring and reporting.

    c. Alarm, non-normal and return to normal condition annunciation.

    d. Selective operator override and other control actions.

    e. Information archiving, manipulation, formatting, display and reporting.

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    f. BMS internal performance supervision and diagnostics.

    g. On-line access to user HELP menus.

    h. On-line access to current BMS as-built records and documentation.

    i. Means for the controlled re-programming, re-configuration of BMS operation and for

    the manipulation of BMS database information in compliance with the prevailing codes, approvals and regulations for individual BMS applications.

    Provide BMS reports and displays making maximised use of simple English language descriptions and readily understood acronyms, abbreviations and the like to assist user understanding and interpretation. All text naming conventions shall be consistent in their use and application throughout the BMS. All PC-based configurations shall operate on Microsoft Windows XP. Each fixed and portable PC shall be online configurable for specific applications, functions and groups of BMS points. 2.7.2 Navigation Trees The system will have the capability to display multiple navigation trees that will aid the operator in navigating throughout all systems and points connected. At minimum, provide a tree that identifies all systems on the networks. The system shall provide the ability for the operator to add custom trees. The operator will be able to define any logical grouping of systems or points and arrange them on the tree in any order. It shall be possible to nest groups within other groups. Provide, at minimum, five levels of nesting. The navigation trees shall be dockable to other displays in the user interface such as graphics. This means that the trees will appear as part of the display, but can be detached and then minimised to the Windows task bar or closed altogether. A simple keystroke will re-attach the navigation to the primary display of the user interface. 2.7.3 Dividable Display Screens It shall be possible for the operator to divide the display area within a single browser window into multiple display panels. The content of each display panel can be any of the standard summaries and graphics provided by the system. Provide each display panel with minimise, maximise and close icons. 2.7.4 Alarms Alarms shall be routed directly from primary application nodes to PCs and servers. It shall be possible for specific alarms from specific points to be routed to specific PCs and servers. The alarm management portion of the OWS software shall, at the minimum, provide the following functions:

    a. Log date and time of alarm occurrence.

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    b. Generate a Pop-Up window with audible alarm, informing a user that an alarm has been received.

    c. Allow a user, with the appropriate security level, to acknowledge, temporarily silence,

    or discard an alarm.

    d. Provide an audit trail on hard drive for alarms by recording user acknowledgement, deletion, or disabling of an alarm. The audit trail shall include the name of the user, the alarm, the action taken on the alarm and a time / date stamp.

    e. Provide the ability to direct alarms to an e-mail address or alpha-numeric pager. This

    must be provided in addition to the pop-up window described above. Systems which use e-mail and pagers as the exclusive means of annunciating alarms are not acceptable.

    f. Any attribute of any object in the system may be designated to report an alarm.

    The BMS shall annunciate diagnostic alarms indicating system failures and non-normal operating conditions. The BMS shall annunciate application alarms. 2.7.5 Reports Reports shall be generated and directed to one or more of the following: User interface displays, printers, or archive at the users option. As a minimum, the system shall provide the following reports:

    a. All points in the BMS.

    b. All points in each BMS application.

    c. All points in a specific Application Node.

    d. All points in a user-defined group of points.

    e. All points currently in alarm in a BMS application.

    f. All points locked out in a BMS application.

    g. All BMS schedules.

    h. All user-defined and adjustable variables, schedules, interlocks and the like.

    i. BMS diagnostic and system status reports. Provide all applicable standard reports of the BMS manufacturer. Provide for the generation by the user of custom reports as specified in the Particular Requirements. 2.7.6 Dynamic Colour Graphics An unlimited number of graphic displays shall be able to be generated and executed.

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    Graphics shall be based on Scalar Vector Graphic (SVG) technology. Values of real-time attributes displayed on the graphics shall be dynamic and updated on the displays. The graphic displays shall be able to display and provide animation based on real-time BMS data that is acquired, derived, or entered. The user shall be able to change values (set points) and states in system controlled equipment directly from the graphic display. Provide a graphic editing tool that allows for the creation and editing of graphic files. It shall be possible to edit the graphics directly while they are on-line, or at an off-line location for later downloading to the Application Node. The BMS system shall be provided with a complete user expandable symbol library containing all of the basic symbols used to represent components of a typical BMS system. Implementing these symbols in a graphic shall involve dragging and dropping them from the library to the graphic. 2.7.7 Schedules The system shall provide multiple schedule input forms for automatic BMS time-of-day scheduling and override scheduling of BMS operations. At a minimum, the following spreadsheet types shall be accommodated:

    a. Weekly schedules.

    b. Temporary override schedules.

    c. Special Only Active if Today is a Holiday schedules.

    d. Monthly schedules. Schedules shall be provided for each system or sub-system in the BMS. Each schedule shall include all commandable points residing within the system. Each point may have a unique schedule of operation relative to the system use schedule, allowing for sequential starting and control of equipment within the system. Scheduling and re-scheduling of points shall be accomplished easily via the system schedule spreadsheets. Monthly calendars for a 12 month period shall be provided that allow for simplified scheduling of holidays and special days in advance. Holidays and special days shall be user selected with the pointing device or keyboard and shall automatically re-schedule equipment operation, as previously defined on the weekly schedules. 2.7.8 Historical Trending and Data Collection Trend and store point history data for all BMS points and values as selected by the user. The trend data shall be stored in a manner that allows custom queries and reports using industry-standard software tools. At a minimum, provide the capability to perform statistical functions on the historical database:

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    a. Average.

    b. Arithmetic mean.

    c. Maximum / minimum values.

    d. Range difference between minimum and maximum values.

    e. Standard deviation.

    f. Sum of all values.

    g. Variance. 2.7.9 Paging Provide the means of automatic alpha-numeric paging of personnel for user-defined BMS events.

    a. System shall support both numeric and alpha-numeric pagers, using Alpha-numeric, PET, or IXO Protocol at the owners option.

    b. Users shall have the ability to modify the phone number or message to be displayed

    on the pager through the system software.

    c. System shall utilise pager schedules to send pages to the personnel that are on-call.

    d. The Contractor shall be responsible for providing a modem for connection to the

    paging service. 2.8 Intelligent Controllers or Outstations The controllers shall accept multiple combinations of point types for monitoring and control of building automation functions. Each controller is to operate with local closed loop programming independent from server if: peer to peer communication is interrupted, to perform resident control routines, receiving information from field mounted sensors and switches and transmitting instructions to actuators to perform control sequences, to manage local hardware and software alarms, to collect historical data, to facilitate operator input and output and to communicate with central BMS server and operator interface. Processing shall be a minimum of 32 bits in resolution with a minimum cycle time of one second. Controllers shall have a buffered RTC (Real Time Clock). Controllers shall provide standard energy management and control software. Main plant controllers shall be freely programmable to allow custom algorithms and control sequences. Unitary controllers may be application specific to meet the requirements specified. Standard energy management and control algorithms shall, as a minimum, include Pm PI, PID and PWM (Pulse Width Modulation) control; optimisation; historical logging; hours run logging; counter totalisation; alarm reporting; time and holiday programs; psychrometric state point calculations for absolute humidity, enthalpy, dew point temperature, logic gates and virtual addressing.

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    Proportional action only loops shall give 50% output at set point. Open loop control (flow or supply conditions) shall have proportional and integral actions. Closed loop control (return, room, extract conditions) shall have proportional action only. Configuration software shall be protected in flash RAM, buffered by a battery with a minimum support time of five years, or burnt on EEPROM. Analogue to digital conversion shall be a minimum of 12 bits in resolution. Controllers shall perform continuous diagnostics and any mal-function detected shall be alarmed at the front-end terminal or other man machine interface. Controllers shall have opto-isolated network interfaces. Controller hardware shall be capable of operating in the following environmental conditions:

    0 40C. 0 90% RH.

    Where specified, controllers shall be provided with UPS units to buffer controller communication and operation. Where controllers are free issued to terminal unit manufacturers, the BMS Installer shall also free issue associated interface relays, transformers and thyristor controllers, as required. 2.9 Point Capability The system shall be capable of supporting the type and number of hardware points listed within the Particular Requirements. The system shall support all software points, programming blocks and macros necessary for the specified control functions. Controller point expansion transducers or digital multiplexers shall not result in loss of functionality or speed and allow full addressing capability as the point type designated within the Specification. Controllers shall have either dedicated, or universal inputs and outputs. Point types supported shall be digital input, digital output, pulse input, analogue input and analogue output. Digital output points shall be relay, or solid state triac rated for the voltage and current being switched. Panel-mounted controllers digital output points shall not be used to switch low voltage 230V directly, this shall be achieved through interface relays. Analogue output points shall be 0 10V. Universal or dedicated analogue input points on each controller shall allow combinations of thermistor and RTD resistance inputs, as well as voltage and current input, such as 4 20 mA, 0 20 mA, 0 10V, 0 5V. Digital inputs shall monitor volt-free contacts only. Low voltage signals shall be input through interface relays.

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    Pulse inputs shall recognise the minimum duration and frequency of associated meter contacts for software cumulative counting purposes. 2.10 Spare Point Capacity Controllers shall be provided with a minimum quantity of 25% surplus of hardware points of each point type at the time of Tender. The distribution of these surplus points shall be equal among all point types. The system shall support software points, programming blocks and macros necessary for the hardware spare point capacity provided. The BMS Installer shall clearly state in the Tender return the used and spare point capacity for each controller. 2.11 Expansion The system shall have the capability for future expansion. The BMS Installer shall confirm that all essential parts of the system hardware, such as outstations, will continue to be manufactured and capable of retrofitting without major hardware or software upgrades for a period of five years after Practical Completion of the project. 2.12 Distributed Processing Controllers shall be capable of performing all specified control functions in a completely independent manner. If any other controller or communications processor mal-functions within this system, all other controllers shall continue to control, monitor and have the ability to be accessed and programmed without degrading the overall performance of the control system. 2.13 System Networking Controllers shall be capable of sharing information with other controllers such that control sequences or control loops executed at one controller may receive analogue and digital values derived from other controllers within the network. If the network communication link fails, or the originating controller mal-functions, the control loops shall continue to function using the last value received from the failed component. Sharing of information between controllers shall be peer to peer to avoid loss of information sharing through a single point of failure. Larger systems shall be divided into a number of Local Area Networks (LANs) to increase redundancy and reduce volume of network communication. The architecture of these LANs shall be agreed with the Engineer prior to commencement. 2.14 Field Devices 2.14.1 Sensors Temperature Sensors

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    Unless otherwise indicated, all temperature measuring sensors shall be platinum resistance (PT 100) type. Thermistor sensors shall only be used on low priority monitoring and only by agreement with the Engineer. The range of sensors shall suit the particular application and as defined in the tables. Ambient limits for temperature sensors shall typically be -10C to +50C, 0 90% RH non-condensing. Humidity Sensors Two ranges of humidity sensors have been defined in the following tables. The Contractor shall normally install the standard range, except where close-control of humidity is required, where high quality sensors are to be provided. Calibration certificates shall be provided for all humidity sensors and the calibration of each shall be checked during commissioning and recorded. Long-term stability of high quality sensors shall be defined as a drift of less than 1% per year and the measurement range of all humidity sensors shall be not less than 0 95% non-condensing over a temperature range of -10C to +40C. Pressure Sensors All sensors shall be suitable for a pressure of at least 1.5 times the maximum working pressure, or the required test pressure, whichever is the higher. All pressure sensors shall comply with the Pressure Equipment Directive (PED). Calibration The Contractor shall calibrate all sensors during the commissioning and when requested to do so, provide manufacturers calibration certificates. Where high quality humidity sensors are specified, the manufacturers recommended calibration device shall be used. Sensor calibration checks must be carried out immediately adjacent to the sensor point in order to ensure accurate results. Where sensor characteristics are non-linear, these characteristics shall be modelled in software to ensure representative readings across the entire range. Where pulse point meters are installed, an appropriate scale divisor or multiplier shall be built into software to ensure correct information is recorded. In order to ensure reading accuracy, comparative readings shall be taken at the beginning and end of the commissioning phase. Sensor Installation The following general requirements shall be observed at each sensor point, where applicable:

    Duct and pipe-mounted sensors shall also be provided with an adjacent test hole or point.

    Cable entry shall always be on the side or underside of sensors to avoid water entry.

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    Where applicable all sensors shall be provided with a cable loop to allow removal without disconnection (for example, removal from duct).

    The position of all concealed sensors shall be clearly marked.

    Sufficient clearance shall always be provided to enable any sensor probes to be fully

    withdrawn.

    Where sensor cables pass through openings with sharp edges such as metal ductwork, the cable shall be protected by using rubber grommets, or similar.

    2.15 Control Valves 2.15.1 General The following types of valve shall be used in the appropriate application:

    Application Type Control Mixing Terminal Unit

    Three or Four Port Globe valve

    Control Mixing - Other Equipment Three- Port Globe valve

    Flow Control Variable Flow Two-Port Globe valve Motorised Isolation Ball or Butterfly valve Fast Response Isolation Solenoid valve

    2.15.2 Construction Valve bodies shall be selected to ensure that their PN pressure rating is suitable for the maximum test pressure to which the system is applied. Valve bodes shall be constructed from brass, bronze, cast iron or steel, depending upon the application. All valves shall be suitable for operation with clean water containing any system treatment additives including glycol, compressed air, steam, gas or oil, as appropriate. Normal service limits shall be 2C to 90C, but MTHW, HTHW and steam will be higher to suit the system operating temperatures. Mounting

    All valves shall be mounted at the altitudes recommended by the manufacturer.

    Where valves are mounted externally particular care shall be taken to ensure that water cannot accumulate around the spindle seal. All appropriate measures shall be taken to ensure this.

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    2.15.3 Three-Port Control Valves All 3-port valves used for flow control shall be globe pattern and characterised plug to give linear or equal percentage control characteristics, as required. Valve minimum rangeability shall be 50:1. All three-port control valves, whether used in a mixing or diverting application, shall have the ports arranged in the conventional two inlets and one outlet configuration. Valves used in a diverting application shall be selected to give a valve authority of between 0.5 and 0.8. Where used in a mixing application valve authority should be 0.3. 2.15.4 Two-Port Control Valves All fan coil units, overdoor heaters and divicesdevices with a flow rate of less than 0.85l/s shall be fitted with pressure independent control valves complete with flushing bypass and associated drainage and isolation valves as detailed on the relevant mechanical services schematic. The valve set shall operate by means of an automatic balancing cartridge that can be removed without dismantling the valve. The presetting of the valve shall not influence the length of the stroke. The pressure class shall be PN25. The differential pressure operating range shall be up to 400kPa. The valve shall operate by means of an electrical modulation actuator. All other two-port valves used for flow control shall be globe pattern and have a linear or characterised plug to give linear or equal percentage control characteristics., as required. Valve minimum rangeability shall be 50:1. Valves shall be selected to give a valve authority of approximately 0.8. All two-port control valves shall also be selected to maintain their control characteristic up to the maximum system differential pressure to which they are subjected. Where used on steam systems control valves shall be sized to give a pressure drop of approximately 40% of the absolute inlet pressure, unless otherwise recommended by the manufacturer. 2.15.5 Terminal Unit Control Valves Where waterside control of terminal units is specified this shall be by variable flow using two, three or four-port valves, as indicated. Where two-port valves are used they shall be suitable for maintaining their control characteristics for the maximum operating differential pressure to which they will be subjected. Valve authority shall be approximately 0.8. Four-port valves in this context are three-port mixing valves with an integral bypass. All three or four-port mixing valves shall have an authority of between 0.5 and 0.8 and shall be generally in a diverting application. Rangeability of all terminal unit control valves shall be a minimum of 25:1.

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    Where valves for part of a composite factory-assembled terminal unit, valve kit similar standard outlined above shall apply. 2.15.6 Two-Port Isolation Valves Two-port valves used for motorised isolation shall be -turn off to full flow butterfly or ball valves. Ball valves shall be used for sizes up to and including 50 mm, above this valves shall be butterfly type. Valves used for this purpose shall be particularly designed for the purpose and comply fully with the valve specifications outlined in the Pipeline Ancillaries section of this Specification. Butterfly valves shall be fully lugged. When in the closed position all valves shall have tight shut-off. 2.15.7 Solenoid Valves Solenoid shut-off valves shall be used for isolation, where indicated. They shall be generally suitable for operating in ambient conditions and IP rated to suit the working environment, but not less than IP 54. Electrical operation shall either be 24V or 230V AC, as specified. Seals shall be epdm, nitrile or viton to suit the service fluid. Where used for gas safety, solenoid valves shall comply with BS EN 161. Safety valves shall be fail-safe, that is close on loss of power and generally located external to the room they are protecting. Where auto-re-set is specified, this must be approved by the relevant Local and Fire Authorities. 2.16 Control Dampers All air dampers used for air regulation shall have reinforced aerofoil blades and be of the opposed blade type. Where dampers are used for air shut-off, these shall have reinforced blades, blade edge and side seals and be suitable for an operating pressure differential of 2000 Pa, unless otherwise stated. Dampers for tight shut-off shall have leading and trailing edge seals and double edge seals. 2.17 Actuators All actuators shall be matched to the valves or dampers to which they are fitted and shall have sufficient torque and stroke or rotation to drive the controlling device throughout its full range and against any operating pressure differential. Actuators shall be suitable for operation either on 24V or 230V electrical supply as specified and at ambient from -10C to +50C.

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    All actuators shall be protected to a minimum of IP 54. Where mounted externally they shall be contained in a weatherproof enclosure or other detail agreed with the Engineer. All actuators shall have an easy-to-read position indicator, the option to fit end switches if specified and a manual override facility. Valve actuators shall have spindle adjustment to ensure that the stroke of the valve can be correctly set. Actuators on dampers shall have a spindle locking clamp allowing the actuator to be attached without obscuring the view of the blade direction marking. Actuators shall be fitted to the device by suitable purpose-made brackets. The manufacturers recommendations, regarding mounting altitude, shall always be followed. Where specified, actuators shall have spring-open or return. With this facility the valve or damper shall be taken to the limit of its travel. Actuators shall normally be suitable for a 0 10V or 4 20 mA control signal, unless otherwise specified.

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    3 PARTICULAR REQUIREMENTS 3.1 Scope/Interface Wiring to Mechanical and Public Health Services In general, the division between the Electrical and Mechanical services of the work shall be as follows: a) Electrical Services

    i) Supply, install and connect supplies to the motor control centres.

    iii) Supply, install, test and commission all control/fire alarm wiring between the motor control centres/starters and fire alarm indicator panel and building services panel.

    iv) Attend on others to assist in testing and commissioning the complete mechanical controls system.

    vi) Liaising fully with others in co-ordinating and planning work. b) Mechanical Services

    i) Supply and fix all motor control centres including interconnecting wiring if panels delivered on site in sections.

    ii) Supply, install and connect supplies from the motor control centres including local starters, heaters, motors, equipment pumps, fans etc.

    iii) Supply, install, connect, test and commission local isolators adjacent to all equipment and motors. Firemans switches adjacent to the entrance to the boiler room The isolators associated with Star/Delta drives shall be provided with suitable auxiliary contacts for the correct operation of the starters.

    ii) Provide and fix all starters, pumps, fan and other equipment.

    iii) Supply, install, test all controls wiring and connect all control and monitoring devices in conjunction with the Electrical Services Contract.

    iv) Provide and fix all control and monitoring devices.

    v) Provide all gas valves and solenoids including standby battery to maintain them in the event of a mains failure and emergency stop locks.

    v) Testing and commissioning the complete system.

    vi) Liaising fully with others in co-ordinating and planning work.

    vi) Provide and fix complete trace heating installation for pipe work from isolating switches.

    vii) Provide all power supplies to all field devices, outstations and controllers.

    The Electrical Contractor shall provide electrical supplies to trace heating tapes supplied and installed by the Mechanical Contractor. The Contractor shall carry out all the wiring using XLPE/LSF/SWA/LSF copper cables or single core PVC copper cables in conduit or trunking as indicated on the drawings. The minimum cross-sectional area of cable shall be 1.5mm as indicated on the drawings.

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