e1996 - pavillions cds comms rm - ac install

8/14/2019 E1996 - Pavillions CDS Comms Rm - AC Install

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Our Ref: E1996

Project: CDS Computer Room, Downdraft Replacement Works

CDS COMPUTER ROOM

AIR CONDITIONING REPLACEMENT QUOTATION

SITE: PAVILLIONS, BRISTOL

Prepared for Spie Matthew Hall & Computershare

By

Updated On 13th March 2009


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Chiller Technical Solutions Reference Number: E1996

Project Number: CDS Air Conditioning Replacement Tender

To: Spie Matthew Hall From: David Taylor

Contact: Chris Cox E-Mail: [email protected]

E-Mail: [email protected] Tel No: 0117 932 1992

Date: 13th March 2009 Fax No: 0117 932 1937

No Pages: 1 of

Reference: E1996

Site: Pavillions, Bristol

Equipment:

Replace Four Liebert units for new Downdraft units

We have been requested to supply and install new downdraft units to Spie Matthew

Hall at the above site.

We propose replacing the current Liebert downdraft units for new Liebert units. The

new units will have an increased capacity to take into account the extra servers within

the computer room and with the existing units struggling to cope with the heat load in

the room.

The new units will be equipped with up to date energy saving equipment

This document includes lift and shift to move the old units out of the computer room

and the new units to be lifted into position.

List of Inclusions and Exclusions on page. 8

Equipment Proposed

Chiller Technical Solutions propose installing Four Liebert downdraft units that will

give the required capacity required for the computer room cooling.

Cabinet

Downflow, top air inlet configuration.

The cabinet is manufactured from Zintec steel, externally painted with Charcoal Grey

epoxy-polyester powder paint and assembled using stainless steel screws and high

tensile rivets.

The front and rear panels are double-skinned, with 22mm Class O (A1 EU) fireproof

insulation sandwiched between the skins to reduce noise emission and heat loss. The

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side panels, which are isolated from the inside of the unit to form a complete double-

skinned cabinet, are also lined with 22mm Class O (A1 EU) fireproof insulation.

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The front access panel(s) are hinged and secured by means of a lever catch.

All materials used are CFC-free and may be recycled.

REFRIGERATION CIRCUIT(S)

A single refrigeration circuit(s), (each) incorporating a high efficiency, fully hermetic

scroll compressor with crankcase heater; discharge shut-off valve; liquid receiver with

outlet service valve; safety valve, filter drier, moisture indicating sight glass, liquidline solenoid valve and an externally equalised thermostatic expansion valve.

Each compressor is equipped with pre-set high and low pressure switches for

protection against high condensing and low evaporating temperatures. The low

pressure switch features an automatic reset (with an adjustable delay for winter start-

up) whilst to avoid compressor cycling at high discharge pressures, the high pressure

switch is equipped with a manual reset.

The inclined evaporator coil is manufactured from copper tubes, mechanically bonded

to acrylic painted aluminium fins, with a stainless steel condensate drain pan. The

large face area/low velocity coil allows precise control of temperature and humidity*during cooling and dehumidification*, and is designed to optimise fluid velocity and

minimise pressure drop.

The filter drier, moisture indicating sight glass, liquid line solenoid valve and

thermostatic expansion valve for each circuit are mounted in a service compartment,

isolated from the air stream, to allow checking and adjustment while the unit is in

operation.

EC ELECTRICALLY COMMUTATED FANS

The unit is fitted with two direct-driven, high efficiency, single inlet, backward curved,

centrifugal plug type fans. Each fan is driven by an Electronically Commutated, IP54,

DC motor with integral soft start and variable speed control, to provide significantly

increased motor efficiency and reduced running costs.

Each fan impeller is statically and dynamically balanced and equipped with self

lubricating bearings. The fan is mounted on vibration absorbing rubber supports to

reduce vibration transmission to the frame of the unit.

The fan motors are capable of providing the rated airflow at external static pressures of

up to 300Pa, depending on the modelPage 2

FILTRATION

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The filter cells are made of pleated synthetic fibre in a cardboard frame and aredesigned to minimise the air pressure drop while maintaining maximum filter

efficiency. They are easily accessed/replaced by opening the front panel(s).

The rated efficiency is G4, in compliance with EN 779 standards (equivalent to EU4

filter, Eurovent 4/5, 30% efficiency).

The unit is fitted with a filter differential pressure switch, connected to the

microprocessor controller to

provide Filter Clogged warning indication

ELECTRICAL PANEL

The electrical panel, located at the front of the unit in a compartment isolated from the

airflow, contains the MCBs, contactors, transformers, controller PCB, overload relays

etc. Each high voltage system component is provided with an MCB over-current

protective device. All high voltage components are touch protected by means of a

plastic cover. The electrical panel complies with the IEC norm 204-1.

All units are designed for operation with a 400V (10%) / 3Ph / 50Hz +N +E electrical

supply and are fitted with a mains isolator, mechanically interlocked with the electrical

panel cover.

iCOM with COLDFIRE GRAPHIC DISPLAY

The iCOM microprocessor control and alarm system with Coldfire graphic display

integrates the separate mechanical and electrical components into a 'state of the art'

conditioned space support system that controls / monitors temperature, humidity* and

air flow. The graphics screen displays all the major parameters, including symbolic

representation of unit functions, such as heating, cooling, humidification* and

dehumidification*. In addition temperature and humidity* variations with time can be

presented graphically on screen. All diagnostic procedures, including checking and

calibration of input and output signals, and of the microprocessor itself, can be run fromthe front panel. The controller allows local monitoring and programming of the

following room conditions via a 9 button keypad:

Temperature - C

Temperature set-point - 21C - in steps of 0.1C

Temperature band - 1C - 10C in steps of 0.1C

Humidity - % RH *

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Humidity set-point - 20% RH - 80% RH in steps of 1% *

Humidity band - 5% RH - 20% RH in steps of 1% *

Two LEDs indicate the unit status:

1 - Power on (Amber), Unit on (Green)

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2 - Warning or Alarm activated (Red)

A buzzer provides audible indication of a Warning or Alarm condition

The following warnings / alarms are included:

High temperature

Low temperature

High relative humidity *

Low relative humidity *

Humidifier failure *

Fan failure

Compressor Low Pressure trip

Compressor High Pressure trip Electrical reheat high temperature (When applicable)

Sensor failure

Controller errors

Terminals are provided for remote start/stop control plus Volt-free Common Alarm

and Unit Run indication

The iCOM controller with Coldfire display incorporates standard facilities for group

operation, with run/stand-by, rotation, automatic changeover and parameter sharing

functions, plus a Sleep Mode function which allows units to be programmed to switch

on and off at different times of the day, and on different days of the week.

The controller also incorporates a sequential auto restart timer, allowing field adjustable

time delays to be applied to unit restart after a power loss (or other shutdown). The

timers allow multiple units to be restarted while limiting instantaneous inrush current.

Features:

High definition, 200 x 64 pixel, back-lit LCD screen

User interface via 9 push-buttons

Battery-backed clock for date/time and real time functionsPassword control for set-points, unit/control set-up and service functions

Graphic display of temperature and humidity*

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The Coldfire graphic display is menu-driven and user menus are available in 10

languages.

To facilitate quick and easy setting-up, Coldfire features icon menus and on-line help

(providing information on each parameter and its possible settings)

ICOM records the last 200 events (alarms, warnings etc.) occurring in the system

along with a Graphic Data Record for the unit. The Graphic Data Record can displaythe temperature and humidity* readings for the 16 days, over several user-selectable

timescales.

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The iCOM with Coldfire display controls date and time function using them asoperating information for the customer and as a reference whenever a status change

occurs, logging the status change in the Status Report. Details of the event which

occurred are also stored.

Using buffered RAM, the iCOM also stores the operating hours of each component

(e.g. fan(s), compressor(s), electric heaters, humidifier.) for each connected unit and

incorporates facilities for fixed period maintenance reminders or variable maintenance

periods, calculated by the microprocessor, based on component usage.

ACCESSORIES

FLOOR STAND

The air conditioner is provided with an adjustable, heavy gauge steel, open base

frame, with anti-vibration pads

LIQUISTAT KIT

The unit is supplied with a Liquistat, single point water detection sensor kit, for

connection to the microprocessor controller to provide Water Detection warning or

alarm indication

[Up to five Liquistat point detectors can be connected in series]

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Based on the following selection parameters:

FANS (EC ELECTRICALLY COMMUTATED)

Air volume flow rate : 12,240 m/h

Maximum external static pressure : up to 300 Pa

Design external static pressure : 20 Pa

Fan motor power (Total) : 2.8 kW @ 20 Pa E.S.P.

No. of fans : 2

FILTER

Recirculation : 30% EUROVENT 4/5 - EU4 /

G4

COOLING COIL

Entering air conditions : 21C DB / 45% RH

Cooling media : Refrigerant R407c

Total cooling capacity : 44.8 kW Net

Sensible cooling capacity : 44.8 kW Net

Face area : 1.71 m

COMPRESSORS

Quantity : 2

Type : Scroll

ELECTRICAL REQUIREMENTS

Electrical supply required : 400V(10%) / 3 Phase / 50Hz +

Neutral

Full Load Current : 41.4 Amps / Phase

DIMENSIONS & WEIGHT

Width : 1750 mm

Depth : 850 mm

Height : 1950 mm

Weight : 620 kg

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Total install Price amounts to the sum of:-

105,555.00

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(One Hundred & Five Thousand, Five Hundred and Fifty Five Pounds)

Breakdown of Costs:

Air Conditioning Equipment - 48,346.00 Four Units

Labour to Remove Existing Units - 12,794.00 all old units

Materials - 24,209.00 For all Four Units

Labour to Install - 16,581.00 For all Four Units

Commissioning - 3,625.00 For all Four Units

Optional (Recommended) Extra to connect the Pressure Relief Valves to outside for

all PRV Valves - 4,500.00

Liebert do not supply systems with compressors within the condenser theproposed Liebert system compressors are within the indoor unit

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Inclusions

1. All new pipework from the indoor units to the outdoor units

2. All fittings required to fit the indoor units and outdoor units

3. All decanting bottles

4. All specialist tools for the job

5. Lift and Shift

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6. Disposal of old units [4 off]

7. All electrical works8. All new cables

9. All refrigerant required to commission

Exclusions:-

1. Any offloading of equipment a fork lift is required.

2. Any provision of lifting tackle required for site offloading.

3. Any scaffolding.

4. Any builders work or allied tradesman work.

5. Any preparation of foundations which may be required for sub-bases or

making good.6. Any work not mentioned within the tender document such as control panels,

boiler works etc

7. Value Added Tax that will be levied at the rate applicable at the time of

invoicing

8. Any other item or work not specifically mentioned or implied above

Delivery

The current unit delivery time is currently 6 weeks from the order being received.

Warranty

Chiller Technical Solutions warrants that the equipment offered will be free from

defects in materials and workmanship for a period of 12 months from the date of

commissioning or 18 month from the date of despatch from the manufacturing plant,

whichever is the sooner.

For air-cooled direct expansion air conditioners with standard condensers, the

equipment warranty is valid for use with refrigerant pipe runs of up to 30m equivalentlength (each way), with the condenser mounted no more than 3m

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below the air conditioner or 20m above it, using the pipe sizes given in the relevant

equipment manual. For pipe runs in excess of these limits please contact us for

additional recommendations

If start-up & commissioning is carried out by Chiller Technical Solutions engineers, a

non-consumable parts and labour warranty will apply.

If start-up & commissioning is carried out by others, a non-consumable parts only

warranty will apply, with labour excluded.

Acceptance

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Our quotation will remain open for an acceptance period of once calendar month.

Upon receiving your order will inform you of the date we will be attending site to

carry out these works.

We trust this is to your satisfaction and if we can be of further assistance, please do

not hesitate to contact the undersigned.

Terms & Conditions 20% on order, 50% on installation completion and the

remainder of 30% - 30 days after commissioning.

Hire Services

We at Chiller Technical Solutions Ltd offer a hire service for all your refrigeration,

Air Conditioning, AHU, generators and water chiller needs. This service is offered

across the UK with a guaranteed delivery within 24 Hours.

Water Chiller available from 200kW to 3000kW upwards

Power Generators from 20 KVA to 455 KVA

Portable Air Conditioning - from 2kW upwards

Power Modules from 600 KVA to 2000 KVA

Air Handling Units produce cold or warm air at a predetermined temperature.

Air is transported via flexible hoses and distributed by plenums or air ducting. Used

in conjunction with chillers or hot water systems, air handling systems produce cold

or warm air for events, tent structures, workshops, offices storage

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buildings etc from 40kW to 585kW

Heat Pumps are self contained, closed systems that produce warm or cold

water for cooling or heating at distances, or to supply warm or cold water for

industrial processes. The conditioned water is transported by flexible high pressure

hoses to distribution devices.

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For all enquiries please contact our offices or E-mail: [email protected]

Assuring you of our closest attention at all time, we remain

Regards

David TaylorIIAR

Engineering Manager

For and on behalf of Chiller Technical Solutions Limited

All contracts subject to 30 day payment, terms and conditions available on request...

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e1996 - pavillions cds comms rm - ac install

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