SPE-5102-Performance CRAC and Downflow Unit Particular Speci.pdf

MEEZA MEEZA MV-2 SPE-5102-Performance CRAC and Downflow Unit Particular Specification: Part 2 Black

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SPE-5102Revision T0 August 2010

MEEZA MEEZA MV-2CRAC and Downflow Unit Specification

SPE-5102 Performance CRAC and Downflow Unit Particular Specification: Part 2 Ove Arup & Partners Ltd T0 08 August 2010

Contents

Page

1 Introduction 1

1.1 General 1

1.2 Tender Submission Deliverables 1

1.3 Project Description 2

2 Specific Preliminaries 3

2.1 Instruction for Tender 3

2.2 Contractor’s Responsibilities 3

3 Scope Of Works 4

3.1 Contractual Interfaces 5

3.2 Submittals 5

3.3 Operation and Maintenance Manuals 6

3.4 Health and Safety 7

3.5 Regulations and Standards 7

3.6 Identification Labels, Notices 8

3.7 General Testing & Commissioning 8

3.8 Training of Personnel 8

3.9 Handing Over 9

3.10 Service & Maintenance 9

3.11 Further Requirements 9

4 Particular Requirements 12

4.1 Operational Conditions 12

4.2 Plant 12

4.3 Life Expectancy 14

5 Controls and Instrumentation 15

5.1 General 15

5.2 Local Control Panel (LCP) 15

5.3 Human Machine Interface (HMI) 16

5.4 Functional Control 17

5.5 Control Valves and Actuators 18

5.6 Power Failure Restart 18

5.7 Electrical Interfaces 18

6 Testing and Commissioning 19

6.1 General Requirements 19

6.2 Factory Acceptance Tests (FAT) 23

6.3 Site Acceptance Tests (SATS) 24

6.4 Integrated Systems Testing 25


SPE-5102 Performance CRAC and Downflow Unit Particular Specification: Part 2 Ove Arup & Partners LtdT0 08 August 2010

7 Materials and Workmanship 26

7.1 General Requirements 26

7.2 Equipment Performance Ratings 26

7.3 CRAC and Downflow Unit Cabinet 26

7.4 Fans 27

7.5 Filters 27

7.6 Cooling Coils 27

7.7 Control Valves 27

Appendices

Appendix A

Equipment Data Sheets


SPE-5102-Performance CRAC and Downflow Unit Particular Specification Page 1 Ove Arup & Partners Ltd

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1 Introduction

1.1 General

The following Tender specification details the requirements for the Computer Room Air

Conditioning (CRAC) units and downflow cooling units (referred to as Cooling units in this

specification where reference is being made to both) for the MEZZA MV-2 datacentre,

Qatar. The Supplier shall allow for the manufacture, supply, delivery to site, testing,

commissioning, and, setting to work of all equipment, preparation of all drawings, details

and design, record drawings and maintenance manuals for the whole works described

within this document and associated drawings.

The Supplier shall include, within the Tender, details of all variations from the equipment,

materials, installation methods, performance or operation as described in this Specification

and the associated drawings. Such variations shall be scheduled together at the front of the

Tender.

Should the Supplier be successful, the CRAC package shall be procured by the Contractor.

The Contractor is responsible for the complete and functional installation, and for

coordinating interfaces between the equipment supplied in accordance with this

specification and the rest of the works.

This document shall be read in conjunction will all other Contract Documents. Attention is

drawn to the following related documents:

• General Conditions of Contract

• CRAC and Downflow unit equipment data sheet appended to this specification

• Mechanical Services, Secondary Chilled Water Schematic, Critical W-55-801

• Secondary Chilled Water Schematics, Critical Back of House W-55-802 & 803

• Equipment Layout W-55-010

• CRAC and Downflow Unit Installation Detail W-59-900

• SPE-5100 - Outline Mechanical and Public Health Services Particular Specification: Part

2

• SPE-0000 – The General Specification : Part 1

The drawing listed are intended to assist the Supplier understand the project and shall not

be used for design purposes.

1.2 Tender Submission Deliverables

The following specific deliverables are required within the Tender submission in addition to

requirements outlined within the associated contract documents. These items will be

benchmarked against other suppliers during the Tender evaluations.

1.2.1 Technical Details of Proposal

The Supplier shall provide a summary of their technical proposal including detailed

equipment datasheets and an operation narrative.

The Supplier shall complete the technical datasheet found within Appendix A.

1.2.2 Cost Break Down

The Supplier shall provide a cost breakdown of his proposal with line items for the following

elements:

(i) Supply and delivery

(ii) Commissioning



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(iii) FAT Tests

(iv) Training of personnel

(v) First Year Maintenance Contract including 24/7 call out with minimum of 4hrs response.

(vi) Recommended Spares (Include summary of recommended spare components)

1.2.3 Program of Works

The Supplier shall provide a program of works incorporating the following elements as a

minimum:

(i) Design Programme including issue dates to:

(a) The Contractor

(b) The Client / Designers (MEEZA / Arup)

(ii) Engineer’s Review of Documentation

(iii) Lead time for manufacture from placement of order

(iv) FAT test

(v) Transportation/delivery

(vi) Installation by Contractor

(vii) Commissioning

1.3 Project Description

MEEZA provide purpose built data centre facilities to provide outsourced solutions for

customers in the financial services, networks, enterprise and internet content markets

enabling customers to operate robust, scalable and highly available data-centres that can

be easily adapted to meet changing needs.

The new data centre shall be known as the ‘MV-2’ facility.



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2 Specific Preliminaries

2.1 Instruction for Tender

Where the responsibilities of the Supplier are stated within this specification, the Supplier

shall make suitable allowance in terms of money, time and resources to be able to accept

these responsibilities and include the cost of this allowance within his Tender price. The

successful Supplier shall be expected to accept these responsibilities upon being awarded

the Contract.

The Tender shall provide capital costs for the manufacture, supply, delivery and testing and

commissioning of the cooling units including for all identified scope and his commercial

allowances. The Supplier shall provide separately identifiable costs for all ongoing planned

and unplanned maintenance of the cooling units and their controls.

2.2 Contractor’s Responsibilities

The Contractor shall be responsible for (but not limited to) the following:

• Management of delivery, offloading, installation (electrically and mechanically) and

integration of the Cooling units including connection of inlet and discharge ductwork to

fire walls and partitions as appropriate.

• Familiarisation with the technical content of the Cooling Unit package.

• Acquiring, collating and compiling any information from the Supplier required for

inclusion into the Contractor’s design documents, or to facilitate fully integrated

installation of the interfacing with other system elements. This shall include all

information required to support installation, production of installation drawings and the

resolution of interfaces with other system elements.

• Review and authorisation of the Supplier’s method statements for their works

• Review and authorisation of the Supplier’s Health and Safety plan for the works.

• Master scheduling of deliveries and works in collusion and agreement with the Supplier

• Removal of all construction waste from site.

The Supplier shall fully liaise, cooperate and co-ordinate with the Contractor in the

discharging of the above duties and make full allowance for resourcing these activities

within his Tender submission.



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3 Scope Of Works

The Supplier shall be responsible for the design, supply to site, testing, commissioning,

documentation and handing over of the Cooling units, as per the requirements of the

Contract Documentation.

In addition to supply of the equipment, the Supplier shall also be responsible for the

following.

• The handling, physical protection, and delivery of all equipment as described in this

Specification.

• Full testing and commissioning and the production of associated reports and

documentation, including literature for incorporation within the project O&M manuals.

• Full technical documentation, submittals for all equipment and obtaining appropriate

technical review from the Client / Designer team.

• Comprehensive method statements including delivery, testing and commissioning taking

account of all risks associated with Health and Safety, for all testing and commissioning.

• The production of risk assessment prior to the commencement of any on site

commissioning work.

• All aspects of the design shall be liable for review by the Client / Designer and/or the

Engineer throughout the contract period. The Client / Designer and/or the Engineer

reserve the right to inspect the design and the supply works throughout the fabrication

of the system.

• The Supplier shall include for all documentation, items, accessories or apparatus which

may not have been specifically mentioned, but which are usual or necessary for

fabrication, offloading, handling during installation or protection of the Works necessary

to achieve and maintain the performance requirements and safe operation. Use of

particular headings, words or phrases denotes the complete supply of such products

supplied by the Supplier unless stated herein, unless otherwise specified.



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3.1 Contractual Interfaces

The following table denotes the responsibilities for the Supplier and the Contractor including

but not limited to:

Responsibility Supplier Contractor

Design, supply and delivery of Cooling units �

Offloading, locating and installing of units in data centre

space (including all temporary works necessary) �

Hooking up of pipework to Cooling units (including all

temporary works necessary) �

Electrical feed to Cooling units �

The provision of hardware and software to interface the

Cooling units with the Building Services Control System �

Supply and installation of control cables between the

Cooling units and the Building Services Control System �

Flushing and cleaning of pipework distribution system

(including all temporary works necessary) �

Flushing and backflushing of Cooling units �

Balancing of chilled water system and Cooling Units (attendance) �

Testing and commissioning of Cooling units �

Commissioning of Cooling units control system �

Demonstration of Functionality to the Client / Designer and

the Engineer � (attendance)

Integrated systems test (attendance) �

3.2 Submittals

Technical, commercial, health and safety, O&M and other submittals shall be in line with the

requirements of the Contract Documents.

The Supplier shall provide the following at the time of Tender Return:

• Details of the proposed unit.

• Details of integral control valves

• Details of the acoustic performance of the proposed unit as well as details of any

attenuation equipment needed to achieve that performance. Calculations to

demonstrate compliance

• Details of the proposed Suppliers test facility.

After Contract Award, the Supplier shall submit copies of drawings and illustrated technical

leaflets, as described in the Contract Documents, including but not limited to:

• Completed equipment data sheets that demonstrate performance of the equipment at

full load conditions, noise data, interface connection points etc as indicated on the data

sheet

• Manufacturer’s & Equipment drawings

• Testing & Commissioning Procedures



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• Operation & Maintenance Manuals

• Controls narrative for the equipment

• Details of control provisions including schedule of I/O available to the BMS and the

native control protocol of the equipment and any unit non-proprietary unit controller

Rating tables, physical data and capacity data for the selection of equipment shall be

submitted to demonstrate a range of operating conditions. Such information shall be based

on Suppliers' test results for the equipment to be supplied.

Performance curves and tables shall be submitted to define the plant selection including:

• Specified duty.

• 10% overload condition.

Published pressure drop values for coils shall have been determined from type tests. Type

test data shall be available for examination.

A list of simulated conditions designed to check operation of all safety devices during

performance testing, commissioning and testing shall be provided.

Fouling factors for the coils used shall be stated by the Supplier, and shall be appropriate for

the system employed.

The Supplier shall submit a full set of control panel drawings for comment prior to

manufacture which shall include but not be limited to:

• Fascia layout

• Back plate

• Internal wiring diagrams including cable identification

• External loop diagrams

3.3 Operation and Maintenance Manuals

The Supplier shall prepare Operation and Maintenance manuals covering and including the

information detailed below. Textual documents shall be provided in Microsoft Word or

Microsoft Excel and all drawings shall be provided in AutoCAD ‘dwg’ format. Additionally, all

documents and drawings shall be provided in Adobe ‘pdf’ format.

The operation and maintenance manuals shall as a minimum contain the following:

(i) Description of the systems and all the components with specification of manufacture,

model type no., supplier, etc.

(ii) Record drawings.

(iii) Brochure/catalogue sheet with complete technical data, dimensions, instructions for

dismantling and mantling, etc.

(iv) Full operating instructions.

(v) Maintenance manuals setting out all regular, planned, scheduled and periodic

maintenance, cleaning instructions etc. and routine inspections necessary to maintain

the equipment and installation in peak condition.

The latter information shall be compiled in tabular form as follows:

Plant item/weekly/monthly/quarterly/six monthly/annually/remarks.

A schedule of maintenance and cleaning methods and operations of any non plant related

items, including cleaning agents to be used and methods to be adopted.



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Detailed recommendations as to the preventive maintenance frequency and procedures,

including related health and safety procedures, which shall be adopted by the Client /

Designer to ensure the safe and efficient operation of the systems.

Lubrication programmes for all lubricated items of plant and equipment.

A list of consumable items and special tools it is recommended that the Client has in stock.

A list of recommended ”running spares” required, being those items subject to wear or

deterioration and which may involve the Client in extended deliveries when replacements

are required at some future date.

Procedures for fault diagnosis.

Emergency procedures.

The operation and maintenance manuals shall be prepared in English. The manuals shall

be contained in A4 size, plastic-covered, loose leaf, four ring binders with stiff covers, each

indexed, divided and appropriately cover-titled.

The Supplier shall make a set of temporary manuals available at commencement of

commissioning for comments by the Client / Designer. These shall be of the same format as

the final manuals with temporary insertions for items which cannot be finalised until after the

works are commissioned and performance tested.

The Supplier shall issue this documentation to the Contractor for master editing and overall

co-ordination of all other O&M manuals from other works.

The Contractor shall issue the final co-ordinated operation and maintenance manuals and

shall submit two hard copies in addition to a complete digital submission of all Microsoft

Word, Microsoft Excel, AutoCAD ‘dwg’ and Adobe ‘pdf’ files.

3.4 Health and Safety

The Supplier shall comply with all applicable health and safety regulations. The Supplier

shall identify the risks involved in the installation and operation of the plant and equipment

described in this specification. The Supplier shall provide detailed Method Statements to the

Contractor as detailed in the Testing and Commissioning Section.

The Supplier shall make the Contractor aware of any health and safety issues relating to the

installation of the chillers.

3.5 Regulations and Standards

All equipment and installations shall comply with all relevant statutory instruments and

regulations.

The design, specification and installation of all equipment is required to comply where

applicable with the following publications and supplements:

• Qatar National Construction Specification (QCS)

• QGWEC Regulations

• British Standards

• European Standards

• ASHRAE

• CIBSE

• BSRIA



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3.6 Identification Labels, Notices

All equipment, units and control panel designations shall be identified by means of suitably

engraved plastic labels positively secured by means of screws.

Warning notices shall be provided and fitted in accordance with relevant regulations and

best practice.

3.7 General Testing & Commissioning

The Supplier shall carry out full works testing of one Cooling units as described within this

specification, the Equipment Data Sheet and the rest of the Contract Documents.

The Supplier shall ensure that all testing is carried out in accordance with the equipment

manufacturer’s guidelines and recommendations such that the equipment warranties remain

valid.

The Supplier shall include for site testing of all units to demonstrate functionality (including a

breakdown of costs, time allowed etc and a day rate for additional testing).

The Supplier shall include for 3 days of site attendance and assistance during the integrated

systems test (including a breakdown of costs, time allowed etc and a day rate for additional

attendance).

The Supplier shall be responsible for the testing of all his equipment to the satisfaction of

the Contractor.

The Supplier shall develop a commissioning programme with the Contractor to ensure that

all systems are approved for handover in accordance with the project schedule.

The Supplier shall use qualified personnel to carry out the commissioning whether those

people be in-house personnel or external consultants.

The deliverables and responsibilities are discussed in more detail in the specific Testing and

Commissioning section of this specification.

3.8 Training of Personnel

The Supplier shall provide for training of the Client’s personnel in the use of the installed

equipment. This shall take place before or during the commissioning of the plant. Timing

shall be agreed with the Client and the Contractor prior to the training taking place. The

Supplier shall allow for training a minimum of six personnel.

The training programme shall include:

• Introduction to and description of the system (class room based)

• Introduction to and description of the system (site based)

• Starting procedures

• Stopping procedures

• Operation of all safety devices

• Fault analysis

• Routine maintenance (daily, weekly, monthly, yearly)

• Preventative maintenance

• Cleaning procedure



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3.9 Handing Over

Handing over shall not take place until:

• The equipment has been tested and commissioned to the satisfaction of the Contractor,

the Client / Designer and the Engineer

• Possible defects made good

• CE – Marking has been carried out

• The documentation required including any approvals from authorities has been handed

over to the Client / Designer and/or the Engineer

• The operation and maintenance manuals, including record drawings, have been handed

over to and formally accepted in writing by the Client / Designer and/or the Engineer.

3.10 Service & Maintenance

The Supplier shall provide details for a yearly service and maintenance agreement contract.

This shall include:

• Price for yearly, three yearly and five yearly agreement

• Availability and numbers of local service engineers

• Availability of replacement parts

• List of replacement parts

• Typical response times

3.11 Further Requirements

3.11.1 Preparation for Transportation

Equipment shall be designed and fabricated to facilitate the handling, loading and

installation process, and include suitable lifting lugs or other appurtenances or features

required for lifting, handling and installation.

Each crate, box, carton, container or package shall be clearly marked or tagged with the

designated equipment name and identification number and Purchase Order number. Tags

if used shall not be less than 38 mm diameter, with stainless steel ties. All other markings

shall be stencilled.

All finished rubbing surfaces, which are not assembled in the shop, shall be adequately

protected during shipment by wrapping with heavy-duty plastic sheeting or canvas or other

means, which shall be secured by wooden batts securely wired together.

Exposed machined working parts shall be rust inhibited and wrapped for shipment.

Flanged connections shall have blind hardwood flanges bolted onto the flanges to protect

the flanges from abuse and the equipment interior from contamination during shipment.

Screwed end connections shall be capped. Other openings in the equipment shall be

plugged.

Moving parts shall be securely blocked to prevent damage during transport. All material

used to block moving parts shall be tagged and marked to ensure removal before start-up.

Machined surfaces and flange faces shall be coated with heavy rust preventative grease.

All coupling threads shall be coated with tallow base waterproof lubricant to prevent galling

in use and corrosion during shipment and storage.



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The Supplier shall issue a report on damages or shortages after checkout on site of each

shipment. All material delivered shall be subject to the Supplier inspection and rejection.

3.11.2 General Design Criteria

In addition to the fundamental requirements of performance and quality outlined in the

Specifications, the design shall take into consideration ease of maintenance, good

housekeeping and safety.

Adequate adjustment shall be provided to compensate for wear. Replacement of parts shall

involve a minimum of disassembly. Access shall be reasonable and safe.

In addition to the forces imposed by the function of the equipment, the design shall take into

account reasonable forces imposed by personnel and equipment used in servicing.

All materials and equipment shall be selected with regard to standardisation and availability

of spare parts and service.

3.11.3 Shop Fabrication and Assembly

Methods and equipment employed by the Supplier for shop fabrication shall ensure first

class workmanship.

All purchased components shall be selected and installed in accordance with the

manufacturer's recommendations for their application.

All components shall be thoroughly inspected for dimensional accuracy, surface finish, etc.

before assembly.

3.11.4 Inspection

The Client / Designer and/or the Engineer reserve the right to inspect the equipment while it

is being manufactured. The Supplier shall provide free access to his plant and facilities at

any time and assist the inspectors to carry out their duties.

The Supplier shall notify the Client / Designer and/or the Engineer as necessary to allow, at

his option, inspection at the time the equipment fabrication is 100% complete, and/or prior to

scheduled testing so that each may inspect the equipment and witness the standard

production tests.

Inspection at the Supplier's plant shall not relieve the Supplier from any responsibility in

regard to imperfect material or workmanship and the necessity for replacing defective

material or workmanship which does not fulfil the requirements of the Contract Documents.

The acceptance of, or failure to inspect, any material or finished parts by the Supplier or

inspectors shall not prohibit subsequent rejection if found defective. Rejected material and

workmanship shall be replaced or made good by the Supplier.

It is the responsibility of the Supplier to schedule and maintain adequate shop inspection

during the fabrication of the equipment.

3.11.5 Maintenance Tools

The Supplier shall provide three sets of all special tools required for erecting, testing,

operating, maintenance or dismantling of the equipment supplied. Each set of tools shall be

provided in a steel box fitted with a padlock. The tools shall not be used during the erection

or commissioning of the equipment.

Triplicate keys shall be provided for all locks supplied in this package. One master key shall

be provided in addition to the standard keys.

3.11.6 Spares and Consumables

The Supplier shall provide three copies of a comprehensive priced list of spares for all

equipment and components supplied under this package.

The Supplier shall recommend which spares and consumables he considers should be held

to cover:



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• The first two years of operation of the equipment supplied

• Long term operation

All spares shall be subjected to the provisions of the Contract Documentation.

The Supplier shall ensure that adequate spare parts are held available in his stores to

prevent delays in commissioning the equipment.

The Supplier shall confirm the location and time-to-site of nearest stocking dispensary and

nearest qualified service/repair personnel.



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4 Particular Requirements

4.1 Operational Conditions

4.1.1 Operating Conditions

The CRAC units will be located within the data centre space. The general operating

temperatures shall be as stated in the Equipment Data Sheets. However the Supplier shall

ensure that the CRAC units shall function satisfactorily if the temperature and humidity are

subject to short-term excursions.

Downflow cooling units are located in service corridors and other conditioned plant rooms,

internal electrical plant rooms and network termination rooms as well as the BMS control

room, burn in room and bunker room.

All equipment should be rated to operate at 50deg.C ambient (i.e. start-up/site storage

condition) without damage.

4.1.2 Operational Hours

The facility shall operate continuously 24 hours per day, seven days per week without

maintenance shut down periods.

4.2 Plant

All CRAC units shall have the following unless outlined as a specific requirement below:

• Factory fitted controllers that can achieve the functionality described in Section 5 of this

document. If the Supplier standard controller cannot achieve the required functionality

then a unit supplied by the BMS Contractor shall be used. This shall be programmed by

the Supplier, fitted in the factory and be tested as part of the FAT. The Supplier shall

identify the need to use a controller supplied by the BMS Contractor at the time of

Tender return.

• Plug type fans with EC motors – capable of operating at variable speed

• Minimum of 3 binder points providing the ability to measure pressure drop across the

coil and across the control valve

• Anti-vibration hose type connections and base frames and “all other accessories

highlighted on data sheets” for CRAC units.

• Include a steelwork stand to mount the unit level with the raised floor (950 mm) and

support adjacent floor tiles. To be coordinated prior to manufacture.

• Inlet and outlet ductwork for units as required depending on the installation

configuration.

• Include an integral backflow damper to prevent reverse airflow through the unit should it

be off or fail.

• Include an integral automatic transfer switch to allow power feed from two no. diverse

supplies.

• A combined differential pressure and 2 port control valve, factory fitted by the CRAC

manufacturer and in place for the FAT and upon delivery to site.

All downflow cooling units shall have the following unless outlined as a specific requirement

below

• Factory fitted controllers that can achieve the functionality described in Section 5 of this

document. If the Supplier standard controller cannot achieve the required functionality

then a unit supplied by the BMS Contractor shall be used. This shall be programmed by

the Supplier, fitted in the factory and be tested as part of the FAT. The Supplier shall



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identify the need to use a controller supplied by the BMS Contractor at the time of

Tender return.

• Plug type fans with EC motors – capable of operating at variable speed

• Minimum of 3 binder points providing the ability to measure pressure drop across the

coil and across the control valve

• Anti-vibration hose type connections and all other accessories highlighted on data

sheets downflow cooling units.

• Include an integral automatic transfer switch to allow power feed from two no. diverse

supplies.

• Include a steelwork stand to mount the unit level with the raised floor (950 mm) and

support adjacent floor tiles, or installation on the plantroom floor depending on the

specific unit requirements identified in the data sheet. To be coordinated prior to

manufacture.

• Inlet and outlet ductwork for units as required depending on the installation

configuration.

• A combined differential pressure and 2 port control valve, factory fitted by the CRAC

manufacturer and in place for the FAT and upon delivery to site.

4.2.1 Support Frame and Ducting

The CRAC and downflow units shall be provided with support frames and, where necessary,

inlet and outlet ductwork, to suit the specific installation requirements, so a number of

variations are needed. These include the following:

CRAC Units

• Frame standing with free discharge to the floor plenum,

• Frame standing, with the discharge ducted (ie frame enclosed on three sides, and

front discharge ducted to the adjacent underfloor plenum) and ducted return.

Downflow Units

• Free standing with discharge at low level (for applications where unit is located

within the plantroom/ancillary area it is cooling)

• Free standing with ducted inlet and discharge (for applications where unit is external

to the plantroom it is cooling)

• Frame standing with discharge to the floor plenum (for applications where the unit is

cooling a service corridor).

All frame standing units are for use in a raised floor application. The height of the stand

shall be coordinated with the local raised floor height by the Contractor, and be adjustable to

allow for the floor slab tolerance. The frame shall include provision to support surrounding

floor tiles.

The number of each type of support / ducting arrangement is included in the equipment data

sheets.

4.2.2 Specific Requirements

Type specific requirements for CRAC units are outlined below:

• Fans speed shall be modulated according to either floor void pressure using a pressure

signal provided to the unit by the BMS or by return air temperature – selectable at the

CRAC HMI.

• The combined differential pressure and 2 port valve shall be modulated according to

either supply air temperature or return air temperature – selectable at the HMI.



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• When within the dead band, the CRAC shall modulate the 2 port valve to maintain a 6

°C temperature difference between the supply and demand chilled water temperatures.

4.3 Life Expectancy

Cooling unit cases and components shall be constructed to achieve a guaranteed service

life to first major maintenance of 15 years and design life in excess of 25 years.

A guarantee and details of the materials, construction and protection systems proposed

shall be submitted.



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5 Controls and Instrumentation

5.1 General

Each CRAC and downflow unit shall be provided as a composite unit and be provided with a

standalone onboard controls system which shall be connected to the BMS network by the

Contractor.

If the CRAC and downflow manufacturer’s standard controller cannot achieve the required

functionality then a different manufacturer’s unit controller can be supplied. The Cooling unit

manufacture shall detail which controller they intend to provide and submit a technical data

at the time of tender. The Cooling unit controller shall have ModBus or BacNet serial data

interface capabilities without the need to use a third party device, “black box” or protocol

convertors shall not be accepted.

The CRAC and downflow unit controller shall be fitted in the factory and be tested as part of

the FAT.

All timers, set points, parameters etc, shall be fully adjustable with the final values being set

during commissioning.

The unit shall be able to operate continuously with automatic power fail restart without

manual intervention.

The fan speed shall be set within defined limits within the Cooling unit controllers which shall

operate under 2 different parameters which shall be:

• A reset signal from the BMS within the defined parameters set within the Cooling

controller

• Each floor standing free discharge to floor void Cooling unit shall be provided with 2

floor mounted pressure sensors

All alarms shall be masked during start up or when shut down.

Consequential alarms shall be masked.

All alarms shall be configured to be fail safe i.e. open on alarm not close on alarm.

All temperature transmitters shall be pocket mounted PA00 with head mounted 4-20 mA

transmitters.

The Supplier shall provide all inputs and outputs as per the Equipment Data Sheet.

5.2 Local Control Panel (LCP)

An IP54 LCP shall be provided as a pre-wired composite unit that shall include but not be

limited to:

• Load break door interlocked electrical isolator

• All components shall comply with IP2X

• All internal wiring shall be colour coded, ferruled and end crimped

• All wiring shall be housed in slotted plastic trunking which shall not exceed 50%

capacity

• All external wiring shall be connected into Klippon type disconnect terminals with a

separate earth terminal for all analogue devices. External wiring shall not be run through

the control panel so location of the disconnect terminals must be local to the cable entry

point.

• A separate section to house the Cooling unit controller



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• The microprocessor controller and any other control device as required by the

manufacturer

• Fuses, MCB’s, relays and all safety devices

• All external wiring shall be terminated through purpose made cable glands

5.3 Human Machine Interface (HMI)

The Human Machine Interface shall provide the following functionality but not be limited to:

• Indication of all parameters specified

• A minimum of three levels of access

� View only

� Change set points, select the unit to reset alarms, adjust assigned parameters

which shall be password protected.

� Service engineer’s access which shall be password protected.

• An automatic logout facility.

• A graphical user interface with navigation to alarm logs, set points, equipment status

etc.

The information and facilities available at the Cooling unit HMIs shall include but not be

limited to the following information:

CRAC units

• Running

• Critical alarms

• Non-critical alarms

• Alarm history

• Ability to select

� DEFAULT - Control Chilled water 2 port valve on supply air temperature / Fan

speed on signal from BMS or floor mounted pressure sensors

� OR - Control Chilled water 2 port valve on return air temperature / Fan speed on

signal from BMS or floor mounted pressure sensors

� OR - Control Chilled water 2 port valve on supply air temperature / Fan speed on

return air temperature

• Temperature set point adjustment

• Temperature set point

• Supply air temperature

• Return air temperature

• Chilled water supply temperature

• Chilled water control valve position

• Chilled water control valve feedback position

• Fan speed

• Fan speed adjustable set point between pre-set parameters

• Hours run



T0 08 August 2010

• Fault reset

• Filter change alarm/filter differential pressure reading

• Floor void differential pressure reading

Interface with the BMS

The CRAC unit controllers shall provide the following points which shall be “mapped” back

to BMS over ModBus or BacNet:

Downflow Units

• Running

• Critical alarms

• Non-critical alarms

• Controlling 2 port control valve on

� Supply air temperature

• Controlling fan speed on

� Return air temperature

• Temperature set point

• Supply air temperature

• Return air temperature

• Chilled water supply temperature

• Chilled water control valve position as an output

• Chilled water control valve position feedback position

• Fan speed

• Unit failed reset

• Filter change alarm/filter differential pressure reading

5.4 Functional Control

5.4.1 CRAC Units

The unit controller shall modulate the 2 port control valve actuator to maintain a pre-

determined set point which shall be based upon either supply air or return air temperature.

When the chilled water temperature difference across the cooling coil drops below 6°C for a

period of 5 minutes, the CRAC controller shall reset the Proportional / Integral Loop of the

chilled water valve to re-establish the 6 °C differential.

The EC fan controller shall modulate the fans, between pre-determined set points (which

shall be set within the CRAC controller), based on a signal from the BMS, the floor mounted

pressure sensors or to maintain a set return air temperature. The controller shall prevent the

ability to operate both the control valve position and fan speed on return air temperature.

The CRAC units are supplied from a DRUPS, so electrical power shall be maintained in the

event of an interruption to the mains power. However, the units shall have the capability of

restarting without human interaction if the electrical power supply is interrupted. This shall

be tested as part of the FAT.

5.4.2 Downflow Cooling Units

The unit controller shall modulate the 2 port control valve actuator to maintain a pre-

determined set point which shall be based upon supply air temperature. The EC fan

controller shall modulate the fans based upon return air temperature.



T0 08 August 2010

When the chilled water temperature difference across the coil drops below 6°C, for a period

of 5 minutes, the controller shall reset the Proportional / Integral Loop of the chilled water

valve to re-establish the 6 °C differential

The CRAC units are supplied from a DRUPS, so electrical power shall be maintained in the

event of an interruption to the mains power. However, the units shall have the capability of

restarting without human interaction if the electrical power supply is interrupted. This shall

be tested as part of the FAT.

5.5 Control Valves and Actuators

The control valve and actuators shall comply with the Materials and Workmanship section.

5.6 Power Failure Restart

Following a power failure the valve shall not close (drive open/close type) to ensure the

shortest time to re-establishing full cooling duty.

The Supplier shall give details of the time taken for the unit to return to full duty (100% fan

speed) following a power failure. This shall include time taken for the controller to reboot. It

is permissible to include a relay in order to establish power to the fan before the controller is

rebooted. This relay shall drop out after a period (no longer than 5 minutes) and return fan

speed control to the controller.

5.7 Electrical Interfaces

The bulk supply is to feed fans and controls. The Supplier shall provide details of electrical

supply requirements within his submission.

The Supplier shall provide details regarding the maximum permissible cable termination size

for the electrical supply. The supply shall be bottom entry to the unit.

All electrical components and installation methods shall comply with the local authority

standards and legal requirements.



T0 08 August 2010

6 Testing and Commissioning

6.1 General Requirements

The Works shall allow for the co-ordination, testing and commissioning of part (or all) of the

works as set out in the Commissioning Responsibilities Matrix below.

Commissioning Responsibilities Matrix

�

A

Responsible for Implementation

Provides assistance/attendance

Note Contractor shall be responsible for programming and co-

ordination of all commissioning works. The Supplier shall carry

out his works and provide attendance as required

Activity Supplier Contractor

Factory Acceptance Tests � A

Co-ordination meetings to confirm

installation interfaces and

programme

A �

Commissioning meetings to confirm

activities, responsibilities and

programme

A �

Pre-commissioning � A

Commissioning � A

Site Acceptance Tests � A

Demonstration of Functionality to the

Client / Designer and the Engineer

� A

Integrated System Test A �

Client Training � A

The Supplier shall attend site for the purposes of co-ordination, planning and

implementation of these works as directed by the Contractor.

6.1.1 Documentation and Certificates

The Supplier shall submit Testing and Commissioning and Performance Testing method

statements, data and manuals as required by the Contract Documents and as necessary to

allow the Contractor to plan, co-ordinate and implement the associated works as detailed

below.

For on-site activities, these shall be separately identified.

The Supplier shall provide all necessary and appropriate documentation to the Contractor to

allow him to compile the documentation set out below.

The Supplier shall agree procedures for notices, witnessing, reporting and recording tests

with all parties involved including Local Authorities and Statutory Undertakings, prior to the

commencement of the works. The Supplier shall provide all necessary and appropriate

assistance to the Contractor.

The Supplier shall submit copies of the formal test certificates signed by the Supplier and

the Contractor’s representative not later than 3 days after completion of successful tests.



T0 08 August 2010

6.1.2 Instruments and Equipment for Testing

The Supplier shall supply, check, recalibrate whenever necessary and maintain in good

working order all instruments and equipment for setting out, measurements, gauging,

inspection, commissioning and performance testing whether they are specifically called for

or implied by the Contract Documents.

All such instruments and equipment shall be adequate for the purpose and shall satisfy the

purposes and accuracy's required by the Contract Documents.

All instruments and equipment shall remain the property of the Supplier.

6.1.3 Provision of Staff

The Supplier shall provide all necessary staff with the relevant skills and competence for all

inspection, testing, commissioning and performance testing.

6.1.4 Costs of Tests

The Supplier shall bear the costs for all parts of all tests as described in this document.

6.1.5 Notice to Client / Designer

The Supplier shall give at least seven days' notice to the Client / Designer and/or the

Engineer of any commissioning or testing to be carried out to enable the Client / Designer

and/or the Engineer to witness all or any of such tests, etc.

6.1.6 Commissioning and Performance Testing Specifications and Manuals

The Supplier shall prepare and submit a set of testing and commissioning specifications and

manuals. These shall be prepared in draft for review and comment by the Contractor at

least 4 weeks prior to any testing, commissioning and performance testing activities. The

manuals shall include, but need not be limited to:

• Factory, off-site and on-site testing, commissioning, acceptance testing,

demonstrations, Client training and performance testing Method Statements and activity

check list.

• Complete set of proposed test/commission forms, pro formas etc.

The Supplier shall produce this Specification incorporating all necessary data, documents

and the like. It is essential that this document represents a comprehensive approach for the

complete Works and associated interfaces.

Commissioning Method Statements shall be based on the current Codes of Practice and all

applicable Standards. They shall describe the exact method that the Supplier and the

Contractor shall adopt to commission an item of equipment. The Method Statements shall

be approved by the Client / Designer and/or the Engineer prior to any commissioning activity

taking place.

6.1.7 Commissioning Manual

This document shall provide an updated version of the equipment Commissioning and

Performance Testing Specification including a comprehensive set of all testing and

commissioning forms, pro-formers, certificates and the like, duly completed and witnessed.

Test Certificates, which shall contain the following minimum information:

(a) System Identification

(b) Date of Test

(c) Design Date

(d) Individual Equipment Identifications

(e) Reference Number of Tests

(f) Referenced Test Procedure and/or Method Statement

(g) Reference QA/QC Procedure



T0 08 August 2010

The commissioning manuals shall contain the following sections:

(a) Systems Schedules

(b) System Test and Commission Specifications

(c) A record of all tests carried out (including all testing recorded on Test Certificates)

(d) Drawings and diagrams cross-referenced with the test records

(e) Record of instrumentation used, together with current calibration certificates.

At the completion of all testing and commissioning the Supplier shall provide the completed

testing and commissioning manuals in both hard copy as agreed with the Client / Designer

and/or the Engineer and electronic format compatible with Microsoft Word, Excel or as

otherwise directed by the Client / Designer and/or the Engineer. The electronic transmittal

shall be on read/write CD. Two sets of disks shall be handed over: one Master and one

working copy. A strict software configuration control shall be enforced.

6.1.8 Inspection and Testing Certificates

6.1.8.1 Supply Works Test Certificates

Works tests certificates shall include, whenever applicable, full information to enable the

item tested to be identified, such as project title, Supplier's name, manufacturer's nameplate

or serial numbers, the location in the Supply Works and the delivery or batch which the

sample represents.

6.1.8.2 Inspection and Testing Records

The Supplier shall maintain records of all inspections, and testing performed to substantiate

conformity with the Contract Documents including those carried out by the Supplier and/or

third party testing agencies, together with manufacturers' or Suppliers’ certificates of test.

All records shall be retained on site and made available to the Client / Designer and/or the

Engineer on request. On completion of the Works all records shall be handed over to the

Client / Designer and/or the Engineer unless otherwise directed.

These records shall include, as appropriate, but not be limited to, project title, Supplier's

name, the identification of the element, item, batch or lot, the nature and number of the

observations and tests, the dates of testing, the name and signature of the person

responsible for the testing, the number and type of deficiencies found, and details of any

corrective action taken.

Any record, which indicates that any part of the Works inspected or tested does not comply

with the Contract Documents, shall be submitted without delay in order that the Supplier's

proposals for rectification may be assessed.

6.1.9 Control of Time

The Supplier shall co-operate with any other Suppliers and sub-contractors who may be

working on, adjacent to, or connected with the Supply Works. In positions where

construction Works and installations are adjacent to or in the vicinity of the Supply Works,

co-operate in every respect with the Contractor to determine the most suitable sequence of

installation.

6.1.10 Instruction of the Client’s Staff

Prior to commissioning of the installation, the Client shall be appointing operating and

maintenance staff or maintenance contractor to undertake the operation and maintenance of

the Works. The Supplier shall provide assistance to the Client’s staff during the course of

the installation to explain the purpose and function of the Works. This assistance shall be

planned and organised by the Contractor. The Supplier shall allow for 8 people training for a

period of 2 days.

The instruction shall cover the day to day running of the plant and systems. The location

and function of all items listed on the Record Schedules shall be explained and the



T0 08 August 2010

procedures given in the Operating and Maintenance Manuals for starting up, shutting down,

isolating sections, emergency procedures, etc, shall be comprehensively explained and

demonstrated to the Client’s satisfaction. Such training periods shall not coincide with any

other testing, commissioning or continuous run periods.

6.1.11 General Inspection

The Supplier shall test each plant item as specified herein and as required by British Codes

and by applicable Insurance Agencies. Tests shall be witnessed by all required parties and

written certification of same furnished to the Client / Designer. The Supplier shall co-ordinate

all testing and commissioning with the Contractor.

Inspections and tests shall be carried out in accordance with specified or approved

procedures and the results shall be judged in accordance with the specified Standards or

other agreed criteria including criteria defined in the Specification.

6.1.11.1 Statutory Approval Testing

The Supplier shall be responsible for ensuring that all tests and approvals required by

Statutory Authorities are duly performed by an approved Insurance Authority and the

relevant approval documents issued, free of charge, to the Contractor. The name of the

Insurance Authority shall be stated by the Supplier for approval by the Contractor \at the

time of Tender. The Contractor may nominate an Insurance Authority in lieu of the

Supplier's Insurance Authority.

6.1.11.2 Pre-commissioning, Setting to Work

Following the completion of installation, all equipment shall be pre-commissioned, set to

work and commissioned. The Supplier shall conduct these tests to ensure the safe and

correct setting to work of the equipment supplied under the Contract.

The Supplier shall detail the tests required which shall include but not be limited to the

following:

• Check all electrical connections to ensure that they are correct

• Inspect the Contractor’s and other Sub-contractor's electrical test records to ensure that

the Equipment is safe to operate.

• Carry out any further electrical tests necessary to ensure the Equipment is in a safe and

satisfactory condition to operate.

• Check operation of all safety devices

• Check all pipework connections (chilled water and condensate)

• Check the installation of valves, mountings, pipe and fittings

• Check lubrication

• Check rotation of drives

• Check and confirm power consumption of all electrical equipment (e.g. fans, pumps,

heaters etc.)

• Carry out short running tests on all items sufficient to demonstrate the general operation

of the Equipment and the operation of controls, control valves, instruments etc.

• Carry out any field testing of the installed works control system and interface with the

BMS.

• Preliminary noise level tests

• Tests required by the Insurance Authority and Statutory Authorities

Submit a written report of satisfactory completion of each phase of work to the Contractor.



T0 08 August 2010

6.2 Factory Acceptance Tests (FAT)

The Supplier shall fully works test the first CRAC and downflow unit of each type as required

for the project. Tests shall be witnessed by the Client / Designer and/or the Engineer unless

waived in writing.

The tests shall demonstrate that the volume flow rate, pressure, cooling capacities, supply/

air return temperatures, noise levels, and performance of the Cooling units are in

compliance with the requirements of this section of the Specification and are not less than

those specified in the Equipment Data Sheets.

The differential pressure 2 port control valve shall be factory fitted by the Cooling

manufacturer and in place for the FAT.

The Cooling units shall be visually inspected to ensure that the details contained within this

specification and any items offered in the accepted tender are included for.

All controls shall be tested.

Should the first production model of this order fail to meet the specified criteria it shall be

rebuilt. Once the necessary remedial works are carried out it shall be re-tested and

witnessed until proven to meet the performance. The modifications necessary to achieve the

design criteria shall be repeated for all subsequent machines at no cost to the Contract.

Tests shall be carried out to comply with the requirements of the Statutory Authorities,

approved Insurance Authority and the relevant British Standards. Test certificates shall be

issued as appropriate.

The acceptable tolerances for each full load test are:

• Thermal performance (cooling capacity) of machine: -0%, +5%.

• Noise rating shall not exceed those requirements outlined on the equipment data sheets

• Power Consumption at full load: -5%, +0%.

Test shall demonstrate the following:

• Re-start operation after power failure

• Safety controls and devices for all limit conditions causing safety shutdowns.

• Capacity and operation of the unit with varying fan speeds. Test results shall be

recorded at 10% fan speed capacity steps and from 50% to 100%.

• The witnessed and un-witnessed tests shall be carried out at the design voltage and

frequency.

• The performance test data to be recorded shall be a minimum of:-

� kW input (fans)

� Fan pressures (Pa)

� Chilled water flow rate (litres per sec)

� Cooling coil pressure drop (kPa)

� Chilled water inlet temperature (°C)

� Chilled water outlet temperature (°C)

� Supply air temperature (°C)

� Return air temperature (°C)

� Noise

• All critical, non-critical and maintenance alarms shall be demonstrated.



T0 08 August 2010

• 2 port valve operation shall be demonstrated at varying air return temperatures.

• 2 port valve operation (differential pressure functionality) with varying pressure

upstream of the unit.

• Where relevant the condensate pump shall be operated.

• Power transfer on the ATS.

At the conclusion of each test period, schedules of the test data shall be provided and the

Contractor, Engineer and Client / Designer shall certify the test results for that particular test

period as being in accordance with the specification requirements.

Machines failing to meet these criteria will not be accepted and shall be re-manufactured

and re-tested at the Suppliers expense and to the satisfaction of the Contractor.

At the conclusion of the thermal tests, the machines safety devices shall be demonstrated to

operate at the Suppliers stated set points.

The Supplier shall allow for the demonstration of any additional safety devices supplied with

the machines to ensure they are completely fail safe and protected against any external

influences which the Supplier considers as being detrimental to the operation of the

machine.

The Supplier shall include and separately identify in his tender offer, a full description of the

Suppliers test facility, inclusive of the methods used to: -

• Record all the data previously stated in this Specification.

• The means of carrying out the thermal, efficiency and noise rating tests of the machines.

• Copies of the certificates for the instruments, which form part of his test facility.

• Record data sheets (specimen) to demonstrate the recording of the test data.

The Supplier shall include in his tender offer all costs associated with carrying out the

specified tests, at the place of manufacture. The costs shall include for 4 attendees

including all travel (to and from site) and accommodation for the duration of the testing.

Electrical, control and instrumentation tests shall be performed and certified as specified in

this specification demonstrating all loops, operational functions, safety devices, interlocks,

sequences, alarms and Human Machine Interface (HMI) interface.

All controls inputs and outputs shall be demonstrated in local and remote control.

6.3 Site Acceptance Tests (SATS)

The Supplier shall provide a price per unit to test Cooling units as required by this section of

the Specification. Tests shall be witnessed by the Client / Designer and/or the Engineer

unless waived in writing.

Tests shall demonstrate the following:

• Re-start time for Cooling units to achieve 100% load after power failure

• Safety controls and devices for all limit conditions causing safety shutdowns.

• Capacity and operation under varying load conditions from start-up through full-load to

shutdown. Test results shall be recorded at each capacity step and 100% of maximum

capacity.

• The witnessed and un-witnessed tests shall be carried out at the design voltage and

frequency.

• The machines shall be run at full load for a period of two hours at the design conditions

for chilled water and air, as specified in the Equipment Data Sheets.



T0 08 August 2010

• The performance test data to be recorded shall be a minimum of:-

� kW input (fans)

� Fan pressures (Pa)

� Chilled water flow rate (litres per sec)

� Cooling coil pressure drop (kPa)

� Chilled water inlet temperature (οC)

� Chilled water outlet temperature (°C)

� Supply air temperature (°C)

� Return air temperature (°C)

� Noise

• All critical, non-critical and maintenance alarms shall be demonstrated.

At the conclusion of each test period, schedules of the test data shall be provided and the

Contractor, Engineer and Client / Designer shall certify the test results for that particular test

period as being in accordance with the specification requirements.

In addition to the individual tests, the Supplier shall ensure the function of the Cooling units

as the under floor void pressure varies (fan speed controlled by BMS signal).

6.4 Integrated Systems Testing

In addition to the specified testing and commissioning of each piece of equipment and

discrete system, the facility shall undergo an Integrated Systems Test (IST). The scope and

details of the IST are yet to be established. However, the Supplier shall provide a price for

three days of attendance at the IST.



T0 08 August 2010

7 Materials and Workmanship

7.1 General Requirements

Cooling units shall be Chilled Water cooling units.

Where Cooling Units are installed on a raised floor each unit shall be delivered to site in two

separate sections being as follows, adjustable base stand and cooling unit. All screws shall

be ‘captive’ type to prevent their loss during assembly and maintenance. Each adjustable

base stand shall be supplied complete with integral raised modular floor tile support detail.

The Supplier shall allow for a separate early delivery of the base stands to allow installation

of the floor before delivery of the Cooling units.

Each cooling unit shall be provided externally with a clearly labelled isolator. All terminations

on the ‘live’ side are to be fully insulated.

Sound attenuators, where required, shall not extend into the floor void.

7.2 Equipment Performance Ratings

Declared equipment performance ratings shall be based on certified type test data.

7.3 CRAC and Downflow Unit Cabinet

All Cooling units shall be a self-contained and factory assembled. When Cooling units,

associated components and parts are delivered to site, they shall be fully weatherproofed by

temporary protection, until the Cooling units are erected in designated location, to prevent

damage and the ingress of water/dust during storage and erection on site.

A nameplate shall be permanently affixed to every Cooling unit listing unit reference, model

number, supply air volume, fan static pressure and coil duties.

Cooling unit cabinets shall be of the rigid frame and panel construction to prevent distortion

and drumming in operation. The casing and framework of each Cooling unit shall be

constructed to withstand the maximum positive or negative pressure created by the

associated fan(s), without permanent distortion, when all air supply or return paths are

blocked. Individual components and parts of Cooling units shall be assembled using

proprietary and proven fastening techniques. Jointing methods shall ensure that Cooling

units are as airtight in operation as required in the table below:-

• With an air pressure within the Cooling units of >500 Pa, air leakage limit shall be 1.5

litres/second per m² of Cooling unit surface area.

• With an air pressure < 500 Pa air leakage limit shall be 0.7 litres/second per m² of

Cooling unit surface area.

Cabinet frames shall be constructed of galvanised tubular steel. Lifting rings shall be

provided, as part of the frame construction, on all individual Cooling unit of 35 kg mass and

above for delivery and maintenance removal.

All galvanised parts shall be hot-dip galvanised only

• Cladding panels shall be fabricated from mild steel or aluminium sheet. Each of the

Cooling cabinet panels shall be de-mountable without affecting the Cooling normal

operating. The unit casing shall be of double skin construction incorporating insulation

material for thermal and acoustic performance. The insulation shall be a minimum of

25mm thickness and 68 kg fibreglass or equivalent thermal and acoustic performance.

Casing shall be treated such that any fibres or other detached material resulting from

the degradation of insulation is contained within the casing itself and is prevented from

entering the airstream.



T0 08 August 2010

The insulation surface shall be sealed to prevent moisture penetration and provided with a

vapour barrier of rating 0.015 g/(sMN).

All surfaces and joints shall be free of “cold bridges”. All external and internal surfaces of

frame panels shall be provided with epoxy baked powder paint or equivalent corrosion

protection coating.

7.4 Fans

Fans shall be located to draw air through the chilled water coil evenly to maximise coil

surface efficiency. Cooling unit fans shall be selected to deliver the design air volume

against the system resistance including dirty filters.

Fans and associated motors shall be suitable for continuous operation and any start/stop

programmes scheduled. Motor and fan bearings and shafts shall have a minimum design

operational life of 40,000 hours with one start and stop per hour.

A minimum of 2 fans shall be fitted in each cooling unit unless otherwise agreed. The units

shall be capable of overcoming a minimum external resistance of (50 Pa)100Pa, excluding

any sound attenuation required to satisfy the noise requirements specified.

Each unit shall have a means of preventing air re-circulation in the event of single fan

failure, other than a nominal 5% of the forward airflow of the failed fan.

Fan casings and impellers shall be of rigid and airtight construction, manufactured in

materials resistant to corrosion from the operating environment. All fans shall be tested in

accordance with international standards.

All fans installed in Cooling units of the plug type shall have electrically commutated (EC)

motors. EC motors shall comply with relevant CE, IEC and BS EN standards. For motors

less than 16 A per phase, they shall comply with BS EN 61000-3-2. For motors greater than

16 A per phase, they shall comply with BS EN 61000-3-12.

7.5 Filters

Air filters shall be provided for each Cooling unit at the return air path before the cooling coil.

Provision shall be made for full access to all filters for media changing, inspection and

general maintenance. Access to filters shall not affect the normal Cooling unit operation.

Filter installations shall be complete with a differential pressure switch to indicate the filters

required to be changed at an adjustable pre-set value.

The filter shall be of a high efficiency type as specified on the equipment data sheet.

All filter materials shall conform to UL Class 2.

7.6 Cooling Coils

Chilled water cooling coil duties shall be as listed in the equipment data sheet. Coils shall be

of a maximum of 8 rows depth with copper tubes and aluminium fins. Casings shall be 1.6

mm mild steel hot dipped galvanised metal sheet.

The lower part of the casing shall be mounted in a watertight drip tray sloped towards a

flush mounted drain connection so that no water is retained in the tray. Adequate

precautions shall be taken to ensure that no carry over of water can occur, even at start up.

7.7 Control Valves

As identified on the Equipment Data Sheets, each cooling coil shall be provided with a

combined differential pressure and 2 port control valve.

Chilled water differential pressure sustaining flow control valves shall be accurately matched

to the coil operating parameters to permit control within the overall parameters of the



T0 08 August 2010

hydraulic system in which they are installed. Valves shall be suitable for the entire pressure

range of the hydraulic circuit including the dead head pressure of the pumps.

Valves shall be fitted at the factory by the Cooling Unit manufacturer, and be in place for the

FAT and SAT.

MEZZA MEZZA MV3CRAC and Displacement Unit Specification

SPE-5102-Performance CRAC and Downflow Unit Particular Specification Page A1 Ove Arup & Partners Ltd

T0 08 August 2010

Appendix A

Equipment Data Sheets

Equipment Data SheetY02 CRAC UNITS (DUCTED)

WATER COOLED

General Data

Unit Reference

Quantity

Location

System

Type

ROOM UNIT

Performance Data

Net Total Cooling Capacity kW

Net Sensible Cooling Capacity kW

Entering Air Condition °Cdb/wb

Leaving Air Condition °Cdb/wb

Unit Air Flow Rate m³/s

External Static Pressure Pa

Unit Fan Total Pressure Pa

Number of Fans / Motors

Fan Type

Fan Drive Type

Fan Speed rpm

Fan Size (Ø) mm

Filter Test Standard

Revision Description: Final Tender Issue

Job Name: MEEZA MV-2 Job Number: 211518

Made by: KMKBFinal Tender Issue

Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ

Required Offered

CSC-CRC-005 to 012,

CSC-CRC-024 to 037

Data Hall Cooling Corridor

CHW Single Coil Downflow

22

Critical Secondary CHW

advise

140

140

30

16

advise

50

ASHRAE 52.2-1999

3/3

EC Plug

Direct

advise

630


Pre-Filter Group & Class

Pre-Filter Medium

Final-Filter Group & Class

Final-Filter Medium

Refrigerant Type

Total Refrigerant Charge kg

Coefficient of Performance @

Compressor Type

No of Compressors

Compressor Motor Speed rpm

Max Compressor Starts/Hours

No of Refrigerant Circuits

No of Control Stages

Min Capacity Control Step %

Humidifier Capacity kg/hr

Electric Heater Capacity kW

Electric Heater Stages

Room Noise Level NR

ASHRAE 52.2-1999

n/a

MERV-6

Polyester / modacrylic

n/a (CHW)

None

None

2 coils / 1 circuit

(CHW)

n/a

n/a

n/a

n/a

n/a

n/a

n/a

0-100 %

Continuous

n/a

75

AA211518-11/4-900

SP-5102-Performance CRAC and Downflow Unit Particular Specification: Revision T0

Part 2 Particular Specification: August 2010 1 of 5


WATER COOLED




Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ

Unit Reference

Construction Data

Casing Material

Casing Construction

Panel Thickness mm

Panel Insulation Material

Inner Skin Material

Inner Skin Thickness mm

Inner Skin Finish

Outer Skin Material

Outer Skin Thickness mm

Outer Skin Finish / Colour RAL

Coil Tube/Fin Material Material

Condensate Tray Material / Finish

Refrigerant Liquid Line Size DN

Refrigerant Suction Line Size DN

Humidifier Connection Type

Humidifier Connection Size

Condensate Drain Connection Type

Condensate Drain Size (internal dia.) mm

Unit Operating Weight kg

Zintec

CSC-CRC-005 to 012,

CSC-CRC-024 to 037

Required Offered

Zintec

Fiber glass

advise

Rivited

Cu/Al

Zintec

natural

Zintec

0.8

7021

flexible

Aisi 304 2B

n/a

n/a

20

840

n/a

n/a


Electrical Data

Unit Max Absorbed Power kW

Unit Max Running Current A

Unit Max Starting Current A

Compressor Motor Rating kW

Fan Motor Rating kW

Electric Heater Rating kW

Humidifier Rating kW

Power Source

Electrical Supply V/Ø/Hz

Dimensional Data

Overall Width mm

Overall Depth mm

Overall Height mm

Front Clearance mm

End Clearance mm

n/a

840

15

9.33

15

3 x 3.11

n/a

n/a

400/3/50

3350

2300

800

985

none

AA211518-11/4-900




WATER COOLED




Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ

Unit Reference

Performance Data

Heat Rejection Capacity kW

Refrigerant Type

Refrigerant Charge kg

Refrigerant Flow Temperature °C

Refrigerant Return Temperature °C

No of Outdoor Units

No of Condenser Fans / Unit

Condenser Fan Type

Condenser Fan Speed rpm

Condenser Fan Size (Ø) mm


Compressor Type

No of Compressors




No of Coils

Max Coil Pressure Loss @design flow kPa Includes control valve


2

n/a

1

n/a

n/a

n/a

n/a

n/a

n/a

n/a

97

16

n/a

n/a

n/a

CSC-CRC-005 to 012,

CSC-CRC-024 to 037

10

advise

CHW

n/a

OfferedRequired


Sound Power Level (Lp) @ 3m dB(A) n/a

0-100 %

AA211518-11/4-900




WATER COOLED




Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ

Noise & Vibration Data

Unit Reference

Room Unit Inlet Air

63 Hz

125 Hz

In-duct Sound Power Level 250 Hz

Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Room Unit Outlet Air

63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Room Unit Casing Radiated

63 Hz

83.3

CSC-CRC-005 to 012,

CSC-CRC-024 to 037

Required Offered

98.4

77.1

76.3

88.5

92.7

90.6

81.6

66.3

58.6

66.3

96.3

88.5

83.9

83.1

74.1

81.0

125 Hz

Sound Power Level 250 Hz

Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Anti-Vibration Mountings

Fan Anti Vibration Mount (AVM) Type

Fan AVM Static Deflection mm

Compressor AVM Type

Comp. AVM Static Deflection mm

Accessories

Microprocessor Controls �� Water Detection ��

Common Alarm VFC Condensate Pump

Door Interlocked Mains Isolator Hot Gas ByPass

Enclosed Floorstand �� Head Pressure Control

Open Floor Stand Supply (Bottom) Air Scoop

Integral Backflow damper �� Return (Top) Air Hood ��

�� Filter Differential Pressure Sensor ��

see note 12

Combined 2-port Control & Pressure

Sustaining Valve (Samson/ TA/ equivalent)

OfferedRequired

88.3

79.3

90.4

64.0

56.3

74.8

74.0

n/a

n/a

Offered Required

noted

rubber

Flexible stainless steel braided connections

AA211518-11/4-900




WATER COOLED




Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ

BMS Outputs (see note 6) BMS Inputs (see note 6)

Common Alarm Volt Free Contact �� Fan Speed Control ��

Run Status �� Fail Status ��

Filter Change Status ��

Testing Samples

Performance Type Tests �� Type Samples

Works Performance Tests ��

Site OEM Performance Tests ��

Works Performance Tests

Noise Performance Tests �� Functional Performance Tests ��

Duty Performance Tests ��

Manufacturer

Manufacturer

Contact Name

Telephone Number

Fax Number

E-mail Address

Internet Address

Distributor

Contact Name

www.airdale.com

Preferred

GEA

Simon Prichard

+44 (0)7718 638549

+44 (0)1442 230647

[email protected]

www.gea-denco.com

Bob Stevens

+44 (0) 113 239 1000

+44 (0) 113 250 7219

[email protected]

Graeme Wigmore

+44 (0) 1628 403200

+44 (0) 1628 403294

[email protected]

Required Offered Required Offered


Required Offered

Alternative

Liebert Emerson

Alternative

Airedale

www.liebert.com

Required Offered

Qatar Site and PowerGEA Middle East FZE

Scott Ross

ICAS Qatar

Contact Name

Telephone Number

Mobile Number

E-mail Address

Additional Information Comments

1 Type test data shall be provided to demonstrate that 8 All details relating to the control of and BMS interface with

the equipment performs to the required standards. this unit are detailed in the CRAC Specification.

This should be referred to in conjunction with and

2 All inputs/outputs to be wired to numbered terminals preference to this data sheet regarding control details.

within the control panel. BMS interface shall either use MODBUS or BACnet.

3 All alarm volt free contacts shall be fail safe. Contacts 9 All units shall be provided with independent unit controllers

shall be normally open, closed when healthy, open on based on readings from 1 no. Supply air temperature

alarm or loss of power sensors, 1 no. Return air temperature sensors, and 2 no.

differential pressure sensors (in addition to the filter

4 All volt free contacts to be rated at 3A inductive sensor), per unit. Controllers shall be capable of

at 230 VAC. modulating the fan air and chilled water flow rates

independently based on a combination of programmable

5 Units to be supplied with pressure independent control setpoints and BMS inputs, including 1 no. Fan speed signal.

valves (PICVs).

10 Units shall provide Run, Fail and Filter Change signals to

6 Units to be supplied with safety guard mesh protecting the BMS. Filter change alarm signal pressure shall be

fan at discharge from CRAC unit into floor void. programmable.

7 Units to be supplied with a lip around the base frame 11 Include an integral automatic transfer switch to allow power

to support adjacent floor tiles. feed from two no. diverse supplies.

12 Flexible stainless steel braided connections are to allow

for thermal expansion/contraction of +/- 18mm

+974 466 6877

Scott Ross

+971 4 8873881

+971 50 5548502

[email protected]

+974 436 0505

AA211518-11/4-900



Equipment Data SheetY03_CRAC UNITS (UNDUCTED)

WATER COOLED

General Data

Unit Reference

Quantity

Location

System

Type

Performance Data









Fan Type

Fan Drive Type

Fan Speed rpm

CHW Downflow (Frame

standing discharge to floor

void)

Direct

Advise

Advise

2/2

EC Plug

30

16

2.94

0

Required Offered

50

50

CSC-DCU-003 to 009

8 (4xRun, 4xStandby)

Data Hall Perimeter

Corridors


Required Offered

CSC-CRC-001 to 004,

CSC-CRC-013 to 016,

CSC-CRC-017 to 023,

CSC-CRC-038 to 044

Data Hall Cooling Corridor




Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ

CHW Single Coil Downflow

22


advise

140

140

30

16

advise

50

3/3

EC Plug

Direct

adviseFan Speed rpm

Fan Size (Ø) mm



Pre-Filter Medium


Final-Filter Medium

Refrigerant Type



Compressor Type

No of Compressors









Room Noise Level NR 75

n/a

n/a

n/a

CHW 1 coils /

1 circuit

0-100 %

continuous

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

CHW

ASHRAE 52.2-

1999

MERV-6


Advise

630

ASHRAE 52.2-1999

advise

n/a

MERV-6


n/a (CHW)

None

630

None

CHW 2 coils / 1

circuit

n/a

n/a

n/a

n/a

n/a

n/a

n/a

0-100 %

Continuous

n/a

75

AA211518-11/4-900



Equipment Data SheetY04_DOWNFLOW UNITS - DUCTED

WATER COOLED

General Data

Unit Reference

Model Reference

Quantity

Location

System

Type

ROOM UNIT

Performance Data









Revision: T0 Date: 08/08/2010 Checked by: APJ


Job Stage: Tender Status: Final Tender issue Made by: KMKB

Network Termination

RoomsHV Input Rooms Transformer rooms

Critical Secondary CHW Critical Secondary CHW Critical Secondary CHW

4 (2xRun, 2xStandby) 4 (2xRun, 2xStandby)20 (10xRun,

10xStandby)


CSC-DCU-065 to 066,

CSC-DCU-071 to 072CSC-DCU-067 to 070 CSC-DCU-038 to 057

Required Offered

15 25 25

CHW Downflow (Frame

standing ducted inlet

and outlet)

CHW Downflow (Frame

standing ducted inlet and

outlet)

CHW Downflow (Frame

standing ducted inlet

and outlet)

Required Offered Required Offered Required Offered

1.01 1.5 1.5

16 16 16

30 30 30

15 25 25

1/1 1/1 1/1

Advise Advise Advise

50 50 50


Fan Type

Fan Drive Type

Fan Speed rpm

Fan Size (Ø) mm



Pre-Filter Medium


Final-Filter Medium

Refrigerant Type



Compressor Type

No of Compressors









Room Noise Level NR

EC Plug EC Plug EC Plug

1/1 1/1 1/1

ASHRAE

52.2-1999

ASHRAE

52.2-1999

ASHRAE

52.2-1999

630 630 630


Direct Direct Direct

n/a n/a n/a

n/a n/a n/a

Polyester / modacrylic Polyester / modacrylic Polyester / modacrylic

MERV-6 MERV-6 MERV-6

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

CHW CHW CHW

1 coils / 1

circuit

1 coils / 1

circuit

1 coils / 1

circuit

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

continuous continuous continuous

0-100 % 0-100 % 0-100 %

75 75 75

n/a n/a n/a

AA211518-11/4-900




WATER COOLED





Unit Reference

Construction Data

Casing Material

Casing Construction

Panel Thickness mm


Inner Skin Material


Inner Skin Finish

Outer Skin Material










Condensate Drain Size mm

CSC-DCU-065 to 066,




Rivited Rivited Rivited

Required Offered

Zintec Zintec Zintec

natural natural natural



Fiber glass Fiber glass Fiber glass

Cu/Al Cu/Al Cu/Al

7021 7021 7021

0.8 0.8 0.8


n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

Aisi 304 2B Aisi 304 2B Aisi 304 2B

20 22 20

flexible flexible flexible

n/a n/a n/a



Electrical Data





Fan Motor Rating kW



Power Source


Dimensional Data

Overall Width mm

Overall Depth mm

Overall Height mm

Front Clearance mm

End Clearance mm

230 400 230

20 22 20

n/a n/a n/a

5 3.6 3.6

2 3.6 3.6

0.96 1.45 1.45

n/a n/a n/a

n/a n/a n/a

1 1 x 1.45 1 x 1.45

1950 1950 1950

750 750 850

750 750 1750

400/3/50 400/3/50 400/3/50

none none none

800 800 800

AA211518-11/4-900




WATER COOLED





Unit Reference

Performance Data


Refrigerant Type




No of Outdoor Units


Condenser Fan Type




Compressor Type

No of Compressors




No of Coils

Max Coil Pressure Loss @design flow kPa

CSC-DCU-065 to 066,



CHW CHW CHW

0.64 n/a n/a

Required Offered

16 26.8 26.8

n/a n/a n/a

n/a n/a n/a

16 16 16

10 10 10

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

n/a n/a n/a

40 40 40

1 1 1

1 1 1




Sound Power Level (Lp) @ 3m dB(A)

40 40 40

n/a n/a n/a

n/a n/a n/a

0-100 0-100 0-100

AA211518-11/4-900




WATER COOLED






Unit Reference

Room Unit Inlet Air

63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


Required Offered

CSC-DCU-065 to 066,



64.1 68.6 68.6

67.3 76.3 76.3

66.9 72.9 72.9

60.6 65.0 65.0

48.4 57.3 57.3

52.9 60 60

57 64.7 64.7

59.8 66.8 66.8

67.1 71.6 71.6

70.3 79.3 79.3

69.9 75.9 75.9

63.6 68.0 68.0

50.4 59.3 59.3

55.9 63.0 63.0

60 67.7 67.7

62.8 69.3 69.3


63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz




Compressor AVM Type


Accessories




Dual Deflection Discharge Grille �� Head Pressure Control

Stainless Steel Drip Tray �� Filter Differential Pressure Sensor ��

�� Leak Detection ��

see note 13 Enclosed Floor stand/Ducted supply ��

Hood/Ducted return ��

61.8 66.3 66.3

65.0 74.0 74.0

64.6 70.6 70.6

58.3 62.7 62.7

46.1 55.0 55.0

50.6 57.7 57.7

54.7 62.4 62.4

57.5 64.5 64.5

to suit to suit to suit

rubber rubber rubber

n/a n/a n/a

n/a n/a n/a

Combined 2-port Control & Pressure Sustaining

Valve (Samson/ TA/ equivalent)



AA211518-11/4-900




WATER COOLED





BMS Outputs BMS Inputs

Common Alarm Volt Free Contact �� Enable/Disable


Leak Detection Alarm ��

Filter Change Alarm ��

Testing Samples





Noise Performance Tests Functional Performance Tests ��


Manufacturer

Manufacturer

Contact Name

Telephone Number

Fax Number

E-mail Address

Graeme Wigmore Simon Prichard Bob Stevens

+44 (0) 1628 403200 +44 (0)7718 638549 +44 (0) 113 239 1000

Offered



Preferred

Required Offered Required

www.liebert.com www.gea-denco.com www.airdale.com

Alternative Alternative

Liebert Emerson GEA Denco Airedale

+44 (0) 1628 403294 +44 (0)1442 230647 +44 (0) 113 250 7219

[email protected] [email protected] [email protected]

Internet Address

Distributor

Contact Name

Telephone Number

Mobile Number

E-mail Address


1 Type test data shall be provided to demonstrate that 7 Downflow units to be provided with independent unit

the equipment performs to the required standards. controllers. Controllers shall be capable of modulating

2 All inputs/outputs to be wired to numbered terminals the Chilled Water Valve and Fan speed independently,

within the control panel. based on readings from 1 no. Supply air temperature

3 All alarm volt free contacts shall be fail safe. Contacts sensors and 1 no. Return air temperature setpoints,based

shall be normally open, closed when healthy, open on on a combination of programmable setpoints and shall use

alarm or loss of power a MODBUS or BACnet type interface.

4 All volt free contacts to be rated at 3A inductive 8 Units shall provide Run, Fail and Filter Change signals to

at 230 VAC. the BMS. Filter change alarm signal pressure shall be

5 Units to be supplied with sub-frame base with no blanking programmable.

plates. Fan shall be located within unit case (above base 9 Include an integral automatic transfer switch to allow power

frame) and base frame shall be provided with safety guard feed from two no. diverse supplies.

mesh of a minimum 80% free area. 10 Be suitable for installation directly on the plantroom floor

6 Control valves shall be capable of performing at the 11 Abbreviations:

specified duties. STA = Supplier To Advise

7 All units to be raised off the slab a minimum of 200mm 12 Panel construction shall be such that there is no risk of

on a floor stand and supply and return ducted to room. degrading panel insulation entering the air stream.



+971 50 5548502

[email protected]

Scott Ross

+974 466 6877 +971 4 8873881 +974 436 0505

www.liebert.com www.gea-denco.com www.airdale.com

Qatar Site and Power GEA Middle East FZE ICAS Qatar

AA211518-11/4-900



Equipment Data SheetY05_DOWNFLOW UNITS - UNDUCTED (Part 1 of 2)

WATER COOLED

General Data

Unit Reference

Model Reference

Quantity

Location

System

Type

ROOM UNIT

Performance Data









Fan Type


Required

CHW Downflow (Floor

standing, discharge at

low level)

2 (1xRun, 1xStandby)

Offered Offered

CSC-DCU-001 to 002

Central Corridor


CSC-DCU-010 to 013 CSC-DCU-018 to 037

25

0


Checked by: APJ08/08/2010

25

Job Stage:

Revision: T0 Date:

Tender Status:

25

30

Critical Secondary CHW Critical Secondary CHW Critical Secondary CHW

16 16

0


4 (2xRun, 2xStandby)20 (10xRun,

10xStandby)

Required Offered

1.5 1.5

0

4.2

Mechanical and Fire

PlantroomsLV Switchrooms

80

CHW Downflow (Floor


low level)

CHW Downflow (Frame

standing discharge to

floor void)

80

16

25

30 30


Advise Advise

1/1 1/1

Advise

2/2

Fan Type

Fan Drive Type

Fan Speed rpm

Fan Size (Ø) mm



Pre-Filter Medium


Final-Filter Medium

Refrigerant Type



Compressor Type

No of Compressors









Room Noise Level NR




ASHRAE

52.2-1999

ASHRAE

52.2-1999

ASHRAE

52.2-1999

Advise Advise

630 630

Advise

630

CHW CHW CHW

n/a n/a n/a

Polyester / modacrylic Polyester / modacrylic

n/a n/a


n/a

n/a n/a n/a

n/a n/a n/a

n/a n/a

n/a n/a

n/a

n/a

0-100 % 0-100 % 0-100 %

1 coils / 1

circuit

1 coils / 1

circuit

1 coils / 1

circuit

n/a n/a

n/a n/a

n/a

n/a

n/a

continuous continuous

n/a n/a

continuous

n/a

75 75

n/a n/a

75

n/a

n/a n/a

AA211518-11/4-900




WATER COOLEDJob Name: MEEZA MV-2 Job Number: 211518



Job Stage:

Revision: T0 Date:

Tender Status:


Unit Reference

Construction Data

Casing Material

Casing Construction

Panel Thickness mm


Inner Skin Material


Inner Skin Finish

Outer Skin Material











CSC-DCU-010 to 013 CSC-DCU-018 to 037

Required Offered

CSC-DCU-001 to 002

Required Offered



Required Offered


natural natural natural


Fiber glass Fiber glass

Zintec Zintec

Fiber glass

Zintec

Cu/Al Cu/Al Cu/Al

7021 7021 7021

Zintec Zintec

0.8 0.8

Zintec

0.8

n/a n/a n/a

n/a n/a n/a

Aisi 304 2B Aisi 304 2B

n/a n/a

Aisi 304 2B

n/a

230 230 600

20 20 20

n/a n/a

flexible flexible

n/a

flexible


Electrical Data





Fan Motor Rating kW



Power Source


Dimensional Data

Overall Width mm

Overall Depth mm

Overall Height mm

Front Clearance mm

End Clearance mm

230 230 600

n/a n/a n/a

7.23.6 3.6

1.45 1.45

3.6 3.6

3.98

7.2

n/a

400/3/50

n/a n/a

1 x 1.45 1 x 1.45

n/an/a n/a

2 x 1.99

750 750 850

750 750 1750

400/3/50 400/3/50

800

none

800

1950 1950 1950

800

none none

AA211518-11/4-900







Job Stage:

Revision: T0 Date:

Tender Status:


Unit Reference

Performance Data


Refrigerant Type




No of Outdoor Units


Condenser Fan Type




Compressor Type

No of Compressors




No of Coils

Max Coil Pressure Loss @design flowkPa

CHW

1

40

n/a

40

1

n/a n/a

1 1

n/a

40

n/a

n/a n/a

n/a

n/a n/a

1

n/a n/a

n/a

n/a n/a

n/a

1

n/a

n/a

10

n/a

n/a

n/a

n/a

n/a

n/a

n/a n/a

n/a

n/a

n/a

CSC-DCU-010 to 013 CSC-DCU-018 to 037 CSC-DCU-001 to 002

n/a n/a

16 16

n/a


26.8 26.8

CHW

10

n/a

CHW

n/a

84.3

10

16

n/a

n/a

Required Offered



Sound Power Level (Lp) @ 3m dB(A) n/a n/a

0-100

n/a

n/a n/a n/a

0-100 0-100

AA211518-11/4-900







Job Stage:

Revision: T0 Date:

Tender Status:



Unit Reference

Room Unit Inlet Air

63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


72.9 72.9 77.6

65.0 65.0 69.7

CSC-DCU-010 to 013 CSC-DCU-018 to 037 CSC-DCU-001 to 002


64.7 64.7 69.4

66.8 66.8 71.5

76.3 76.3

68.6 68.6

81.0

73.3

75.9 75.9 84.7

68.0 68.0 76.8

60 60

57.3 57.3

64.7

62.0

67.7 67.7 78.6

69.3 69.3 78.4

79.3 79.3

71.6 71.6

88.1

80.4

62.7 62.7 67.4

63.0 63.0

59.3 59.3

76.5

71.8

63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz




Compressor AVM Type


Accessories




Dual Deflection Discharge Grille �� see note 15 Head Pressure Control


Open Floor Stand �� see note 14 Leak Detection ��

�� see note 13Flexible stainless steel braided

connections


70.6 70.6 75.3

62.7 62.7 67.4

62.4 62.4 67.1

64.5 64.5 69.2

74.0 74.0

66.3 66.3

78.7

71.0

57.7 57.7

55.0 55.0

62.4

59.7

n/a n/a

rubber rubber


rubber



n/a n/a n/a

n/a

AA211518-11/4-900







Job Stage:

Revision: T0 Date:

Tender Status:







Testing Samples







Manufacturer

Manufacturer

Contact Name

Telephone Number

Fax Number

E-mail Address

Required Offered

Required Offered

www.airdale.com

+44 (0) 113 250 7219

[email protected] [email protected] [email protected]

+44 (0) 1628 403294 +44 (0)1442 230647

www.liebert.com www.gea-denco.com

Bob Stevens

Offered

Required Offered

+44 (0) 1628 403200 +44 (0)7718 638549 +44 (0) 113 239 1000

Graeme Wigmore Simon Prichard

Alternative

Liebert Emerson GEA Denco Airedale

Preferred Alternative

Required


Internet Address

Distributor

Contact Name

Telephone Number

Mobile Number

E-mail Address


1 Type test data shall be provided to demonstrate that 8 Units shall provide Run, Fail and Filter Change signals to

the equipment performs to the required standards. the BMS. Filter change alarm signal pressure shall be

2 All inputs/outputs to be wired to numbered terminals programmable.

within the control panel. 9 Include an integral automatic transfer switch to allow power

3 All alarm volt free contacts shall be fail safe. Contacts feed from two no. diverse supplies.

shall be normally open, closed when healthy, open on 10 Be suitable for installation directly on the plantroom floor

alarm or loss of power 11 Abbreviations:

4 All volt free contacts to be rated at 3A inductive STA = Supplier To Advise

at 230 VAC. 12 Panel construction shall be such that there is no risk of

5 Units to be supplied with sub-frame base with no blanking degrading panel insulation entering the air stream.

plates. Fan shall be located within unit case (above base 13 Flexible stainless steel braided connections are to allow

frame) and base frame shall be provided with safety guard for thermal expansion/contraction of +/- 18mm

mesh of a minimum 80% free area. 14 Floor stands required on all units. Open floor stands specifically

6 Control valves shall be capable of required on frame standing discharge to floor void units.

performing at the specified duties. 15 Dual deflection grilles required on frame standing discharge

7 Downflow units to be provided with independent unit at low level units.

controllers. Controllers shall be capable of modulating

the Chilled Water Valve and Fan speed independently,

based on readings from 1 no. Supply air temperature

sensors and 1 no. Return air temperature setpoints,based

on a combination of programmable setpoints and shall use

[email protected]

ICAS Qatar

Scott Ross

Qatar Site and Power GEA Middle East FZE

+974 466 6877 +971 4 8873881 +974 436 0505

+971 50 5548502

www.airdale.comwww.liebert.com www.gea-denco.com


a MODBUS or BACnet type interface.

AA211518-11/4-900



Equipment Data SheetY05 DOWNFLOW UNITS - UNDUCTED (Part 2 of 2)

WATER COOLED

General Data

Unit Reference

Model Reference

Quantity

Location

System

Type

ROOM UNIT

Performance Data









Tender

Secondary Non Critical

CHW


CHW

16

9.96

54.25

16


1 1

Offered

NSC-DCU-002 NSC-DCU-003

BMS Control



CHW

Bunker

NSC-DCU-001

Job Stage:

Revision: T0

9.48

CHW Downflow (Floor


low level)

CHW Downflow (Floor


low level)

9.42

20

16

Made by:

20

186 183

2/2

SCFinal Tender Issue


9.93

26

Date:

Status:

26 26

54.37


1

Required Offered

20

3.95 0.90 0.96

Burn-in Room

2/2

428

2/2

CHW Downflow (Floor


low level)

Fan Type

Fan Drive Type

Fan Speed rpm

Fan Size (Ø) mm



Pre-Filter Medium


Final-Filter Medium

Refrigerant Type



Compressor Type

No of Compressors









Room Noise Level NR


ASHRAE

52.2-1999



ASHRAE

52.2-1999

ASHRAE

52.2-1999

1268

560 560

776 776

560

CHW CHW CHW

n/a n/a n/a

Polyester /

modacrylic

n/a n/a

Polyester /

modacrylic

Polyester /

modacrylic

n/a

n/a n/a n/a

n/a n/a n/a

n/a

n/a n/a

n/a n/a

n/a

1 coils / 1

circuit

1 coils / 1

circuit

1 coils / 1

circuit

n/a

n/a n/a

n/a n/a

n/a

continuous

n/a n/a

continuous continuous

n/a

0-100 % 0-100 % 0-100 %

4575 35

n/a

n/a

n/a n/a

n/a n/a

AA211518-11/4-900




WATER COOLED

Tender


Job Stage:

Revision: T0

Made by: SCFinal Tender Issue

Checked by: APJ08/08/2010Date:

Status:


Unit Reference

Construction Data

Casing Material

Casing Construction

Panel Thickness mm


Inner Skin Material


Inner Skin Finish

Outer Skin Material











NSC-DCU-001

Required OfferedRequired Offered

NSC-DCU-002 NSC-DCU-003

Lateral

Panels

Lateral

Panels

Lateral

Panels


Required Offered

ZintecZintec Zintec


1 1 1

Fiber glass

Zintec Zintec

Fiber glass Fiber glass

Zintec

CU/AL CU/AL CU/AL

7021 7021 7021

Zintec

0,8 0,8

Zintec Zintec

0,8

n/a n/a n/a

n/a n/a n/a

AISI 304 2B

n/a n/a

AISI 304 2B AISI 304 2B

n/a

650 200 200

20 20 20

n/a

flexible flexible

n/a n/a

flexible


Electrical Data





Fan Motor Rating kW



Power Source


Dimensional Data

Overall Width mm

Overall Depth mm

Overall Height mm

Front Clearance mm

End Clearance mm

650 200 200

n/an/a n/a

0.1 0.10.2

Current

Power7.2 3.6

Current

Power

Current

Power3.6

n/a

n/a

n/a n/a

2 x 1.54

n/an/a

0.380.37

850 750 750

1750 750750

400/3/50400/3/50 400/3/50

800

none

800

1980 19801980

none

800

none

AA211518-11/4-900




WATER COOLED

Tender


Job Stage:

Revision: T0



Status:


Unit Reference

Performance Data


Refrigerant Type




No of Outdoor Units


Condenser Fan Type




Compressor Type

No of Compressors




No of Coils


n/a

CHW

34

1

31

n/a

n/a

n/an/a n/a

n/a

n/a

1

n/a

n/a

1 1

n/an/a

1

33

n/a

n/an/a

n/an/a

n/a

n/a

n/a

1

n/a

n/a

n/a

n/a

n/a

n/a

NSC-DCU-001 NSC-DCU-002 NSC-DCU-003

11

n/a

17

n/a n/a


57.60

CHW

11

n/a

Required Offered

10.49.9

11

n/a

17 17

n/a

n/a

n/a

n/a

CHW

n/a



Sound Power Level (Lp) @ 3m dB(A) n/a n/an/a

n/a n/an/a

0-100 0-100 0-100

AA211518-11/4-900




WATER COOLED

Tender


Job Stage:

Revision: T0



Status:



Unit Reference

Room Unit Inlet Air

63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


76.1 58 57.9

68.2 51.7 51.6

Required Offered

NSC-DCU-001 NSC-DCU-002 NSC-DCU-003


67.9 42 42

70 45 45

79.5

71.8 49

54 54

49

83.2 61 60.9

75.3 54.7 54.6

63.2

60.5 38

40 40

38

73 42 42

75 45 45

82

78 49

54 54

49

65.9 49.5 49.3

70.3

66.6 38

40 40

38

63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz




Compressor AVM Type


Accessories




Dual Deflection Discharge Grille �� Head Pressure Control


Leak Detection ��

�� see note 13Combined 2-port Control & Pressure



73.8 55.7 55.6

65.9 49.5 49.3

60.9

58.2 38

40 40

38

69.5 49

54 54

49

n/a

n/a n/a

n/a n/a

rubberrubber rubber


Flexible stainless steel braided

connections

n/a

65.5 42 42

67.7 45 45

77.2

AA211518-11/4-900




WATER COOLED

Tender


Job Stage:

Revision: T0



Status:







Testing Samples







Manufacturer

Manufacturer

Contact Name

Telephone Number

Fax Number

E-mail Address

www.gea-denco.com

[email protected] [email protected]

Required Offered

Required Offered

www.liebert.com

+44 (0) 1628 403294 +44 (0)1442 230647

Offered

Required Offered

Offered

+44 (0) 1628 403200 +44 (0)7718 638549

Graeme Wigmore Simon Prichard

Liebert Emerson GEA Denco

Preferred Alternative

Required


Internet Address

Distributor

Contact Name

Telephone Number

Mobile Number

E-mail Address


1 Type test data shall be provided to demonstrate that 8 Units shall provide Run, Fail and Filter Change signals to

the equipment performs to the required standards. the BMS. Filter change alarm signal pressure shall be

2 All inputs/outputs to be wired to numbered terminals programmable.

within the control panel. 9 Include an integral automatic transfer switch to allow power

3 All alarm volt free contacts shall be fail safe. Contacts feed from two no. diverse supplies.

shall be normally open, closed when healthy, open on 10 Be suitable for installation directly on the plantroom floor

alarm or loss of power 11 Abbreviations:

4 All volt free contacts to be rated at 3A inductive STA = Supplier To Advise

at 230 VAC. 12 Panel construction shall be such that there is no risk of

5 Units to be supplied with sub-frame base with no blanking degrading panel insulation entering the air stream.

plates. Fan shall be located within unit case (above base 13 Flexible stainless steel braided connections are to allow

frame) and base frame shall be provided with safety guard for thermal expansion/contraction of +/- 18mm

mesh of a minimum 80% free area.

6 Control valves shall be capable of

performing at the specified duties.

7 Downflow units to be provided with independent unit

controllers. Controllers shall be capable of modulating

the Chilled Water Valve and Fan speed independently,

based on readings from 1 no. Supply air temperature

sensors and 1 no. Return air temperature setpoints,based


www.gea-denco.com

[email protected]

Scott Ross

Qatar Site and Power GEA Middle East FZE

+974 466 6877 +971 4 8873881

+971 50 5548502

www.liebert.com


a MODBUS or BACnet type interface.

AA211518-11/4-900




WATER COOLED




Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ

Unit Reference

Construction Data

Casing Material

Casing Construction

Panel Thickness mm


Inner Skin Material


Inner Skin Finish

Outer Skin Material










Condensate Drain Size (internal dia.) mm 20

flexible

n/a

n/a

n/a

Cu/Al

Aisi 304 2B

n/a

Zintec

0.8

7021

Zintec

Zintec

natural

Rivited

Advise

Fiber glass

Required Offered

Zintec

CSC-DCU-003 to 009

Zintec

CSC-CRC-001 to 004,

CSC-CRC-013 to 016,

CSC-CRC-017 to 023,

CSC-CRC-038 to 044

Required Offered

Zintec

Fiber glass

advise

Rivited

Cu/Al

Zintec

natural

Zintec

0.8

7021

flexible

Aisi 304 2B

n/a

n/a

20

n/a

n/a

Condensate Drain Size (internal dia.) mm


Electrical Data





Fan Motor Rating kW



Power Source


Dimensional Data

Overall Width mm

Overall Depth mm

Overall Height mm

Front Clearance mm

End Clearance mm

800

none

850

1950

20

n/a

400/3/50

1750

n/a

2 x 0.73

n/a

1.46

7.2

7.2

480

n/a

20

840

15

9.33

15

3 x 3.11

n/a

n/a

400/3/50

3350

2300

800

985

none

AA211518-11/4-900




WATER COOLED




Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ

Unit Reference

Performance Data


Refrigerant Type




No of Outdoor Units


Condenser Fan Type




Compressor Type

No of Compressors




No of Coils


1

40

n/a

n/a

1

n/a

n/a

n/a

n/a

n/a

n/a

16

n/a

n/a

51.7

CHW

n/a

10

CSC-DCU-003 to 009

Required Offered

2

1

n/a

n/a

n/a

n/a

n/a

n/a

n/a

97

16

n/a

n/a

n/a

CSC-CRC-001 to 004,

CSC-CRC-013 to 016,

CSC-CRC-017 to 023,

CSC-CRC-038 to 044

10

advise

CHW

n/a

OfferedRequired




Sound Power Level (Lp) @ 3m dB(A)

40

n/a

0-100

n/a

n/a n/a

0-100 %

97

AA211518-11/4-900




WATER COOLED




Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ


Unit Reference

Room Unit Inlet Air

63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


94.7

61

73.3

71.5

69.4

69.7

77.6

81

62.2

57.5

54.8

73.8

66.1

64.3

Required Offered

CSC-DCU-003 to 009

62.5

70.4

83.3

CSC-CRC-001 to 004,

CSC-CRC-013 to 016,

CSC-CRC-017 to 023,

CSC-CRC-038 to 044

Required Offered

98.4

77.1

76.3

88.5

92.7

90.6

81.6

66.3

58.6

66.3

96.3

88.5

83.9

83.1

74.1


63 Hz

125 Hz


Lw dB 500 Hz

1 kHz

2 kHz

4 kHz

8 kHz




Compressor AVM Type


Accessories




Enclosed Floorstand Head Pressure Control

Open Floor Stand �� Supply (Bottom) Air Scoop

Integral Backflow damper �� Return (Top) Air Hood

�� Filter Differential Pressure Sensor ��

see note 12

n/a

n/a

55.2

52.5

rubber

68.1

71.5

63.8

60.2



OfferedRequired

88.3

79.3

81.0

90.4

64.0

56.3

74.8

74.0

62

59.9

n/a

to suit

n/a

Offered Required

noted

rubber


AA211518-11/4-900




WATER COOLED




Checked by:

Job Stage:

Revision: T0 Date:

Tender Status:

08/08/2010 APJ

BMS Outputs (see note 6) BMS Inputs (see note 6)

Common Alarm Volt Free Contact �� Fan Speed Control ��


Filter Change Status ��

Testing Samples





Noise Performance Tests �� Functional Performance Tests ��


Manufacturer

Manufacturer

Contact Name

Telephone Number

Fax Number

E-mail Address

Internet Address

Distributor

Contact Name

www.airdale.com

Preferred

GEA

Simon Prichard

+44 (0)7718 638549

+44 (0)1442 230647

[email protected]

www.gea-denco.com

Bob Stevens

+44 (0) 113 239 1000

+44 (0) 113 250 7219

[email protected]

Graeme Wigmore

+44 (0) 1628 403200

+44 (0) 1628 403294

[email protected]



Required Offered

Alternative

Liebert Emerson

Alternative

Airedale

www.liebert.com

Required Offered

Qatar Site and PowerGEA Middle East FZE

Scott Ross

ICAS Qatar

Contact Name

Telephone Number

Mobile Number

E-mail Address


1 Type test data shall be provided to demonstrate that 8 All details relating to the control of and BMS interface with

the equipment performs to the required standards. this unit are detailed in the CRAC Specification.

This should be referred to in conjunction with and

2 All inputs/outputs to be wired to numbered terminals preference to this data sheet regarding control details.

within the control panel. BMS interface shall either use MODBUS or BACnet.

3 All alarm volt free contacts shall be fail safe. Contacts 9 All units shall be provided with independent unit controllers

shall be normally open, closed when healthy, open on based on readings from 1 no. Supply air temperature

alarm or loss of power sensors, 1 no. Return air temperature sensors, and 2 no.

differential pressure sensors (in addition to the filter

4 All volt free contacts to be rated at 3A inductive sensor), per unit. Controllers shall be capable of

at 230 VAC. modulating the fan air and chilled water flow rates

independently based on a combination of programmable

5 Units to be supplied with pressure independent control setpoints and BMS inputs, including 1 no. Fan speed signal.

valves (PICVs).

10 Units shall provide Run, Fail and Filter Change signals to

6 Units to be supplied with safety guard mesh protecting the BMS. Filter change alarm signal pressure shall be

fan at discharge from CRAC unit into floor void. programmable.

7 Units to be supplied with a lip around the base frame 11 Include an integral automatic transfer switch to allow power

to support adjacent floor tiles. feed from two no. diverse supplies.



+974 466 6877

Scott Ross

+971 4 8873881

+971 50 5548502

[email protected]

+974 436 0505

AA211518-11/4-900



SPE-5102-Performance CRAC and Downflow Unit Particular Speci.pdf

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Transcript of SPE-5102-Performance CRAC and Downflow Unit Particular Speci.pdf