Specification Template for
BMS Guide
Addendum
Created for: Resource Efficient Scotland
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Information relating to the use of this document.
This document is to complement the guidance document “BMS Procurement
Guide” (BMSPG) in the process of procuring services to install or upgrade BMS
in all sectors. Its main purpose is to allow users to draft a specification and
tender documents to present to bidders for their consideration.
The user can copy relevant sections relating to their project and requirements
taking guidance from the BMSPG and insert relevant sections from this
document into their draft tender.
Sections 1 is purely acts as a prompt that may have to be included into the
‘Preliminaries/Conditions of Contract’ of any tender but will not replace or
dictate an alternative to your organisations own procurement governance.
Where the text is coloured, the user will insert their own text or prompt to the
user to confirm the validity and update to the latest version of any
recommended legislation or regulations.
Resource Efficient Scotland has published this document to assist the user in
compiling a tender specification but the user is ultimately responsible for the
final tender documentation which may include or not any content from this
document.
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Contents
1.0 INTRODUCTION
5
2.0 PRELIMINARIES/CONDITIONS OF CONTRACT
7
2.1 Contractual Agreement and Form of Tender
7
2.2 Freedom of Information
7
2.3 Contract Period
7
2.4 Working hours
7
2.5 Control of Cost
7
2.6 Third Party Insurance
7
2.7 Construction (Design and Management Regulations)
7
2.8 Security/Safety/Protection
7
2.9 Environmental Protection
7
2.10 Drawings and Specifications
7
2.11 Materials and Workmanship
8
2.12 Arbitration
8
2.13 Out-of-Hours Working
8
2.14 Control of Noise and Dust
8
3.0 GENERAL SPECIFICATION – AUTOMATIC CONTROLS
6
3.1 Introduction
6
3.2 Automatic Controls, Wiring and Associated Electrical Works
6
4.0 GENERAL SPECIFICATION – MECHANICAL
11
4.1 Introduction
11
4.2 Working Drawings
13
4.3 Related Builders’ Works
13
4.4 Builders Work Drawings
13
4.5 Pipework and Valves
13
4.6 Ductwork
14
4.7 Testing, Cleaning and Water Treatment
15
4.8 Painting and Thermal Insulation
15
4.9 Asbestos Testing and Removal
16
5.0 GENERAL SPECIFICATION – ELECTRICAL
17
5.1 Introduction
17
5.2 Working Drawings
22
5.3 Related Builders’ Works
22
5.4 Builders Work Drawings
22
5.5 Earthing and Bonding
22
5.6 Testing
23
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5.7 Identification, Notices and Documentation
24
5.8 Specialist Tools
24
6.0 PARTICULAR SPECIFICATION – AUTOMATIC CONTROLS, WIRING AND
ASSOCIATED ELECTRICAL WORKS
24
6.1 Compliance with Standard Specification
24
6.2 Introduction
24
6.3 Description of Operation
25
7.0 PARTICULAR SPECIFICATION - BMS MAINTENANCE
35
8.1 Introduction
35
8.2 Standard Service
35
8.4 Enhanced Energy Performance Service
39
8.0 SCHEDULE OF RATES AND PERFORMANCE CONTRACT
43
9.1 Introduction
43
9.2 Schedule of Rates
43
APPENDIX 1 BMS Points List
44
APPENDIX 2 Provisional Programme of Works
45
APPENDIX 3 TENDER ANALYSIS
46
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1.0 INTRODUCTION
[INSERT ORGANISATION’S DETAILS] are undergoing a comprehensive upgrade and
enhancement of the Building Management System (BMS) which operates and
controls the heating, ventilation and air-conditioning (HVAC) systems across the
[INSERT ORGANISATION’S DETAILS]’s estate.
The objective of the BMS Upgrade is to enhance the system design to ensure that
the HVAC system operates to its greatest energy efficiency whilst maintaining
satisfactory conditions for the occupants.
The [INSERT ORGANISATION’S DETAILS] is to upgrade existing systems on the
[INSERT SYSTEM TYPE(S)] BMS infrastructure. The communications will use
Ethernet connection (or other communications networks), utilising the [INSERT
ORGANISATION’S DETAILS]’s IT network (unless otherwise specified).
This Specification has four objectives [ADD/OMIT AS APPROPRIATE]:

To provide a Particular Specification for the Upgrade and standardisation of
the existing BMS controls.

Provide a General Specification for all works associated with the BMS
upgrade and to obtain Schedules of Rates and Performance Contracting
Proposals which will form the basis of a Framework agreement.

Provide a Standard specification for all future capital projects which have
any HVAC controls elements both those implemented directly by the
[INSERT ORGANISATION’S DETAILS] and on their behalf through their
partners.

Energy Performance element – the BMS contractor is invited to put forward
proposals to utilise their expertise to assist the [INSERT ORGANISATION’S
DETAILS] in driving down their energy cost though energy saving
initiatives.
In some instances the BMS Contractor will be the Lead Contractor (employing other
sub-contractors as necessary) and will be responsible for managing the works under
the CDM regulations. In this circumstance, the full specification should be used.
Where the controls and BMS is being carried out as a sub-contract to a main
contractor or M&E contractor the Mechanical and Electrical sections of this
specification should be omitted.
The works will be subject to the [INSERT ORGANISATION’S DETAILS]’s Approved
Mechanical & Electrical Standard Specification.
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This “Contract” shall be governed by and construed in accordance with Scottish
Law.
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2.0 PRELIMINARIES/CONDITIONS OF CONTRACT
2.1 Contractual Agreement and Form of Tender
Insert your organisation standard Contractual Agreement and Form of Tender
2.2 Freedom of Information
Insert your organisation’s legal Freedom of Information clause
2.3 Contract Period
Insert your proposed timeline for the tender process
2.4 Working hours
Insert your organisations authorised working hours for the site
2.5 Control of Cost
Insert your preferred cost control system
2.6 Third Party Insurance
Insert your organisations insurance requirements
2.7 Construction (Design and Management Regulations)
Insert your organisations CDM procedures
2.8 Security/Safety/Protection
Insert your organisations security and Health & Safety policy documents.
2.9 Environmental Protection
Insert your organisations environmental policy documentation
2.10 Drawings and Specifications
Insert your organisations detail on drawings and specifications
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2.11 Materials and Workmanship
Insert your organisations requirements on materials used in any project and
quality of workmanship
2.12 Arbitration
Insert your organisation arbitration process
2.13 Out-of-Hours Working
Insert your organisations policy on Out-of Works working
2.14 Control of Noise and Dust
Insert your organisations policy on noise and dust
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3.0 GENERAL SPECIFICATION – AUTOMATIC
CONTROLS
3.1 Introduction
The General Specification details the requirements for the Upgrade of the
[INSERT ORGANISATION’S DETAILS]’s controls system.
3.2 Automatic Controls, Wiring and Associated Electrical Works
3.2.1 Scope of Works
3.2.1.1 The works to be included by the Contractor shall be (delete as
applicable):
a)
b)
c)
d)
Detailed design development
All associated engineering and panel schematic diagrams.
Panel wiring schematics and layout drawings.
Supply of all control equipment including BMS outstations within the
control panel, control valves & actuators (where required), pressure
switches, flow switches, heat-meters (where required), sensors and
thermostats to provide a complete controls system.
e) Removal of existing controls where appropriate
f) All control and monitoring software and interlocks
g) All supervisor screen displays, graphics, alarms etc
h) All associated data networking, signal and control wiring.
i) All associated controls extra low voltage wiring including outstation
wiring.
j) All associated mechanical works shall be carried out by the Contractor
including wiring containment.
k) All associated electrical wiring shall be carried out by the Contractor
including wiring containment / harnessing. The contractor will also be
responsible for associated electrical wiring including power supply to the
control panel, provision of containment for controls and electrical wiring.
l) Testing and commissioning and handover of all control systems.
m) Fine-tuning of control loops during first year of operation.
n) Demonstrating to the Contract Administrator (CA) that the controls
operate as specified.
o) xx months / years defects liability and maintenance from date of handover of the project.
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p) Provision of O&M and schematics upon completion of works.
3.2.2 BMS Standard Specification
The project is to be carried out in line with AG 9/2001 Standard Specification
published by BSRIA. Site specific requirements are detailed in the Particular
Specification later.
3.2.3 Design Development
3.2.3.1 The Contractor shall be responsible and pro-active in obtaining all
information necessary for the BMS design development from the Contract
Administrator (CA) and client.
3.2.3.2 The Contractor shall produce control schematic drawings for all items
of plant. These schematics shall form the basis of the BMS Supervisor screen
graphics. For each [INSERT ORGANISATION’S DETAILS] site the graphics
should incorporate floor-plans of the site plan from which to navigate the
buildings and plantrooms.
3.2.3.3 The contractor shall provide interface wiring diagrams indicating
connections to control panel, field devices and plant equipment.
3.2.3.4 The Contractor shall provide drawings showing precise locations of all
BMS outstations, other control panels, field sensors and control devices, cable
containment and cable routes for all network cables, control and power
wiring. Additionally the Contractor shall provide Descriptions of Operation for
each system. As the design is developed, issue all drawings, schedules and
documents for comment prior to construction.
3.2.4 Control and Monitoring Strategies
3.2.4.1 Document control routines and software in the following formats as a
minimum and issue for comment:







MCC and automatic control panel wiring diagrams
Outstation points lists
Control schematics
Colour print-outs of Supervisor Graphics
Text description of control and monitoring.
Software flowcharts in supplier's standard format
Set-point and control parameter schedules
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3.2.4.2 The set-point schedule shall be issued to the CA as a Proforma listing
all relevant set-points for entry of the required values by the CA where
appropriate. Other set-points will be determined during commissioning.
3.2.4.3 Develop software alarm strategy in discussion with the CA and the
Client.
3.2.4.4 Seasonal Fine Tuning of control strategies and minor changes to the
alarm strategy shall be provided during the first year of operation.
3.2.5 Drawings for Approval
The Contractor shall provide control panel schematics and layouts for
approval by the CA before commencing manufacture of control panel. XX days
shall be allowed for approval / comment on drawings.
3.2.6 Loose Control Equipment
3.2.6.1 The location of all sensors etc shall be agreed with the CA prior to
installation.
3.2.6.2 All loose control equipment shall have installation instructions
provided at the time of supply.
3.2.7 Associated Electrical Works
The Contractor shall install and be responsible for carrying out all associated
electrical installation works.
3.2.8 Testing Commissioning Handover and Fine Tuning
3.2.8.1 The Contractor shall include for commissioning of the new installations
to suit the requirements of the project.
3.2.8.2 Check control loops for correct and stable control and make
adjustments as necessary during the first year of operation.
3.2.8.3 Demonstrate correct and stable control by means of trend-log
evidence in graphical and tabular formats.
3.2.8.4 Full schedules of all control settings shall be recorded and included
within the O&M documentation.
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3.2.9 “As Installed” Drawings
The contractor shall supply all drawings for all parts of the installation as are
required by the Construction Design and Management (CDM) Regulations
2007, including three hard copy sets of “as installed” drawings and on CD.
3.2.10 Operating & Maintenance Manuals
3.2.10.1 The Contractor will provide, prior to acceptance for practical
completion, XX sets of operating and maintenance manuals for the complete
project.
3.2.10.2 The manuals shall be plastic covered, ring binders and all paper will
be of good quality. They shall also be provided in PDF electronic format and
shall comprise (delete as applicable):

















Introduction to O&M Manual
System Descriptions
Control Settings
Operating Procedures
Control Panel and control device wiring diagrams
Drawings showing all equipment and cable routes
Control schematics
“Hook-up” diagrams showing cable connections to packaged plant and
identifying the type and function of each cable, associated interface
and signal.
Control strategies described in detail in text format with links to the
software flow-charts via common point references.
Control and monitoring software strategies described in standard flowchart format.
A simple user guide describing the operation and use of the BMS
system and plant controls.
A simple user guide for the operation and use of the BMS Supervisor,
to be written in non-technical language and shall describe in simple
terms how to access the Supervisor, how to change time programmes,
how to adjust key set-points, how to respond to alarm conditions, how
to start the plant manually after failure of the BMS and how to operate
the inverter drive keypad display.
Valve schedules
Maintenance Procedures
Emergency Procedures
Plant Malfunction
Recommended Spares
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



Test & Commissioning Certificates
Manufactures & Suppliers Details
CDM Health & Safety Information
Schedule of Drawings & Drawing Copies
3.2.11 Client Training
Detailed on-site training (XX day minimum) in the operation and maintenance
of the system for up to XX members of the Client's organisational /
management staff will be provided after each significant work package.
3.2.12 Control Panel
3.2.12.1 Construction
Panel enclosures shall be protected to IPXX (as required for working
environment) and constructed from sheet steel with welded joints and
stiffening angles/channels as necessary.
Access shall be from the front via doubled hinged doors with dished edges;
gasket sealed onto the complementary dished return edges of the case.
3.2.12.2 Cable Size
The panel wiring shall be in accordance with the approved drawings and
current edition of the I.E.E. Wiring Regulations. Cables shall be sized to take
account of the de-rating required for areas with limited or zero ventilation and
for bunching of conductors.
3.2.12.3 Cable Type
Tri-Rated (often known as panel wiring)
240V Power Wiring xx sq.mm
Control Wiring xx sq.mm
3.2.12.4 Cable Colour
The cables shall be colour coded in accordance to the latest legislation as
follows: Neutral
- Insert colour
Earth
- Insert Colour
230V AC control circuits - Insert colour
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110V AC control circuits
24V AC control circuits
24V DC control circuits
Incoming voltages
-
Insert
Insert
Insert
Insert
colour
colour
colour
colour
Any external supplies to the panel shall have isolating links provided on the
terminal rail.
3.2.12.5 Door Wiring
Wiring from panel to panel doors shall be subdivided into reasonable sized
bunches and run through proprietary flexible plastic tubing. The tubing shall
be supported at both ends and have sufficient loop to allow unrestricted
opening of the panel door.
Wiring to components on the door shall be neatly cleated and supported to
relieve the strain on the terminals. Spare cables shall be wired within the door
loom & identified.
3.2.13 Panel Finish
RAL7032. – Pebble Grey
4.0 GENERAL SPECIFICATION – MECHANICAL
4.1 Introduction
The General Specification details the requirements for the Upgrade of the
[INSERT ORGANISATION’S DETAILS]’s BMS and controls.
4.1.1 This specification shall be read in conjunction with the following
documents:
 National Engineering Specification standard specification clauses for
Mechanical Services (current issue).
 CIBSE Guides to current practice.
 Insert any other relevant documentation
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4.1.2 The equipment and installations are to comply with all statutory
regulations current at the time of tender and in particular regard to
following should be made:
Note: The list below may not be the latest versions of the regulations and
legislation
i) The Building Regulations 2000 and all current amendments.
ii) Regulations under the Factories Act.
iii) The Health and Safety at Work Act 1974.
iv) The IEE Wiring Regulations 17th Edition.
v) Regulations under the Electricity Act.
vi) Gas Safety Regulations.
vii) Any special regulations issued by the local Electricity or Water Authorities.
viii) Noise Control - Control of Pollution Act 1974.
ix) Water Bylaws to current practise.
x) COSHH Regulations 1988
xi) The Construction (Design and Management) Regulations 2007.
xii) The Environmental Protection Act.
4.1.3 Unless otherwise specifically stated it is assumed that the Contractor
will act as the principal contractor - subcontracting all mechanical, electrical
and builder’s works as required.
4.1.4 The Contractor is to allow for all mechanical, electrical and builder’s
works associated with this project.
4.1.5 The Contractor to allow for a seasonal re-commissioning visit being a
maximum of six months after the commission date.
4.1.6 The works shall include the responsibility for defects liability and the
maintenance (both planned preventative and breakdown), of all plant and
equipment for a period of xx months from the Certificate of Take-Over.
4.1.7 The Contractor shall allow for all maintenance items that will be
required during the period of responsibility for operation and maintenance.
4.1.8 Any discrepancy between this Specification, the conditions of contract
and other documents listed on the tender form shall be notified to the CA as
soon as is practicable during the pre-acceptance stage, or thereafter.
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4.2 Working Drawings
4.2.1 The Contractor shall provide a full and complete set of working
drawings prior to any work commencing on site.
4.2.2 All final routings of pipework, ductwork and locations of accessories
shall be fully agreed with the CA prior to the commencement of the
installation.
4.3 Related Builders’ Works
4.3.1 Any related builders works shall be carried out by the Contractor unless
otherwise specified in the contract.
4.3.2 Where services breach fire barriers, then the Contractor shall ensure
proper re-instatement is carried out to maintain adequate fire and smoke
protection.
4.4 Builders Work Drawings
4.4.1 The Contractor shall provide a set of Builders Works Drawings to allow
the correct installation of the new services.
4.5 Pipework and Valves
4.5.1 New pipework will be installed as indicated on the tender drawings, to
include:
 LPHW. LPHW heating distribution pipework throughout the building as
detailed on the tender drawings. Pipework to be medium grade steel to
BS1387.
4.5.2 Steel pipework of 50 mm and below will be screwed to BS21. Unions
shall be of the conical brass seat type.
4.5.3 Allowance for thermal expansion will be made by the use of bends and
anchors in the pipework run. The pipework will be arranged to prevent strain
on equipment and will be adequately supported. Supports will allow for the
thermal expansion of the pipework.
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4.5.4 The Contractor shall allow for the supply, installation and commissioning
of the valves shown in Tender drawings plus any additional areas called for in
the General Specification or statutory regulations.
4.5.5 Unless otherwise specified all valves shall be manufactured by
manufacturers approved by the CA / Client.
4.5.6 Isolation valves shall be cast iron wedge gate valves to BS 5150.
4.5.7 Where commissioning sets are required, these shall incorporate flow
measuring facilities and shall be installed in accordance with the
manufacturer’s recommendations.
4.5.8 Lockshield valves shall be used where called for in the General
Specification or Statutory Regulations.
4.5.9 Manual air vents and drain valves are to be located at all high and low
points respectively.
4.5.10 Supports will be installed in accordance with the requirement of the
general specification. Supports will allow for the thermal expansion of
pipework.
4.5.11 The Contractor shall ensure adequate isolating valves are incorporated
into the new systems to allow local isolation of services for maintenance
purposes.
4.6 Ductwork
4.6.1 The contractor shall allow for the supply and installation of all
ventilation equipment as detailed on the tender drawings and equipment
schedule.
4.6.2 Ductwork will be supplied and installed in accordance with DW 144 as
detailed on the drawings. Ductwork will be designed and constructed to
ensure good airflow conditions free from turbulence. Turning vanes shall be
incorporated where appropriate.
4.6.3 Access doors will be constructed in accordance with DW 144 and
installed to enable appropriate access to the following equipment fans and fire
dampers.
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4.6.4 Access to volume control dampers on diffusers or grilles may be by
removal of flexible connections or through the face of the diffuser or grille.
4.6.5 The contractor shall provide fire dampers where ductwork penetrates
through fire barrier. Fire dampers will be of the fusible link out of air stream
drop curtain type. Contractor is to ensure access hatch to the dampers is
provided.
4.6.6 Ductwork will be commissioned in accordance with CIBSE
Commissioning Code Series A. Static and volume measurements will be taken
on all main and branch ductwork. Air volumes of diffusers and grilles will be
taken in accordance with the diffuser or grille manufacturer’s
recommendations. Volumes will be adjusted on the main duct line dampers
and final adjustment on the diffuser or grille damper. On completion of the
commissioning copies of all test results including final air volumes and
settings shall be submitted to the CA for approval and retention.
4.6.7 The Contractor shall allow for the provision of an engraved label
adjacent to each fan controller stating “Extract Fan” or “Supply Fan”
whichever is appropriate.
4.7 Testing, Cleaning and Water Treatment
4.7.1 All LTHW pipework will be hydraulically tested to 1.5 times the pipeline
working pressure or 4 bar gauge for one hour whichever is higher.
A minimum of xx days notice of all hydraulic tests will be given to the CA to
allow the test to be witnessed. Following testing, the new pipework will be
cleaned in accordance with BSRIA Application Guide 8/91 “Pre-Commission
Cleaning of Water Systems” – “BG29/2012”
4.7.2 The complete installation shall be dynamically flushed and filled with an
approved corrosion inhibitor.
4.8 Painting and Thermal Insulation
4.8.1 All steel pipework shall be painted in accordance with BS1710 (British
Pipe Marking Standard) in accordance with the General Specification prior to
the application of any insulation. The Contractor shall ensure that all
uninsulated pipework is painted to match the local décor with 2 coats of paint.
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4.8.2 The new heating system’s pipework is to be thermally insulated with
rigid pre-formed glass fibre section insulation of minimum thermal
conductivity of 0.036 W/m/ºC at a temperature of 50 ºC. The insulation will
be of the thickness 20 mm where pipework runs internally and 30mm where
pipework runs externally exposed to ambient conditions.
The fibre-glass insulation should have a foil backed finish and have a grey
‘Isogenopak’ within the plantroom. All insulated pipework should be labelled
to indicate service and direction of flow.
4.8.3 Insulation shall be taken over all new valves and shall be cut for ease of
access to valves. Control valves (over 50mm dia) and flanges shall be
insulated using flexible, waterproof muffs, incorporating ‘velcro’ quick release
fasteners.
4.9 Asbestos Testing and Removal
4.9.1 Some parts of the site may been subject to an Asbestos Survey and an
Asbestos Register may be available (a copy of which is to be provided on
request from the client), however, arrangements will made to carry out a
comprehensive asbestos survey (by others) as required within the areas of
work and other related areas, in order to identify any instances of materials
that might contain asbestos i.e. pipework insulation, walls etc, prior to the
commencement of contract.
The Contractor shall provide drawings detailing cable, pipe and duct routes to
cross check with asbestos records.
4.9.2 Should the Contractor find any suspicious material during the
installation, then he shall stop work IMMEDIATELY and seek advice from the
CA. Should the suspicious material prove to be Asbestos, then its removal
shall be funded outside of the Contract.
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5.0 GENERAL SPECIFICATION – ELECTRICAL
5.1 Introduction
The General Specification details the requirements for the Upgrade of the
[INSERT ORGANISATION’S DETAILS] controls system. This specification shall
be read in conjunction with relevant documents detailed in Section 4.1.2.
5.1.1 Unless otherwise specifically stated, it is assumed that the Contractor
will act as the principal contractor, sub-contracting all mechanical, electrical
and builder’s works as required.
5.1.2 The Contractor is to allow for all mechanical, electrical and builder’s
works associated with this project.
5.1.3 The works shall include the responsibility for defects liability and the
maintenance (both planned preventative and breakdown), of all plant and
equipment for a period of xx months from the Certificate of Take-Over.
5.1.4 The Contractor shall allow for all maintenance items that will be
required during the period of responsibility for operation and maintenance.
5.1.5 Any discrepancy between this Specification, the conditions of contract
and other documents listed on the tender form shall be notified to the CA as
soon as is practicable during the pre-acceptance stage, or thereafter.
5.1.6 All materials shall be new, unless otherwise specified, and of a type and
rating matched to the duty for which they are specified. All materials and
items of equipment performing the same function shall be of one manufacture
and type, unless otherwise stated in the Specification.
5.1.7 The works shall be set out with all measurements and dimensions
required for the supply and erection of materials on site, making any
modifications in detail as may be found necessary during the progress of the
works. Any such modifications or alterations shall be submitted to the CA
before proceeding.
5.1.8 The positions of all equipment, accessories and apparatus, cables,
trunking and conduit routes shall be marked out on site and agreed with the
CA before their fixing. The drawings are not to be scaled for this purpose.
Where Consultant’s drawings are available, they shall be used to determine
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the exact location of equipment. Particular attention shall be paid to ensure
that accessories are positioned to suit door openings, fitted furniture etc.
Allowance shall be made for varying the position of all electrical points,
accessories etc. within a 1,000mm radius.
5.1.9 The proposed layouts of switchgear, distribution boards, starters,
control units, trunking etc. for all switch rooms, electrical cupboard and plant
rooms shall be submitted to the CA for approval.
5.1.10 Throughout the building, other services may be installed. Due
allowance shall be made for co-operation and co-ordination with other trades,
especially conduit and trunking runs, to ensure that they do not coincide or
clash with other services.
5.1.11 Allow for provision, erection, connection and subsequent removal of
any cable or fittings necessary, or required to maintain existing services, in
the event of any disconnection being made necessary due to or by means of
the work. In connection with the installation of new main switchgear and
alterations to existing supplies, allow for any working out of normal hours
which may be necessary.
5.1.12 No disconnections of supplies shall take place without a minimum of xx
days prior arrangement with both the CA and the client.
5.1.13 Mounting heights given are for general tendering purposes, and will
apply unless otherwise detailed in this Section of the Specification.
5.1.14 The heights given apply to the centre of the box, unless otherwise
stated, but due allowance shall be given for any building feature, i.e. wall
tiling etc. where adjustment shall be made to coincide with the underside of
the tile.
(i)
Appliance control switches
1100mm
(ii)
Push buttons and starters
1100mm
(iii) Fuse connection units
1350mm
(iv) Indicator lamps and alarm bells
2300mm
(To Underside)
5.1.15 All heights shall be checked with the CA before actual installation
commences.
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5.1.16 The installations shall include provision for the integrity of the fire
barriers through which cables, conduits, trunking, bus-bar systems etc. are
being installed, by making good around the installations with appropriate fire
stopping materials. This work shall be carried out to the requirements of the
Building Regulations and those of the 17th Edition of the I.E.E Wiring
Regulations including all current amendments.
5.1.17 All steel screws, nuts, bolts and washers used for fixing ferrous
materials to the building structure shall be sheradised (vapour galvanised).
Non-ferrous fixings shall be employed when fixing non-ferrous materials.
5.1.18 Fixings to brickwork shall not be made in the mortar joint.
5.1.19 When fixing to structural steelwork, clamp on devices shall be used
unless otherwise approved.
5.1.20 Proprietary fixing devices shall be used throughout e.g. Rawlbolts,
Rawlplugs, Plastiplugs etc.
5.1.21 Fixings inside dry partitions shall be by wood screws to timber blocks
fixed to the partition support frame. The timber noggins shall be notched to
accept the accessory back box. Instruct the builder on size and location of
these timber blocks. Where necessary, provide extension rings for accessory
boxes so that the edge of the box is just recessed. Where cabling through
metal partitioning, jumbo stud, PVC conduits or flexible conduits shall be
employed.
5.1.22 All steelwork fabrications prepared shall be wire brushed and rust
treated with zinc chromate and painted with two coats of a rust inhibiting lead
free primer.
5.1.23 All steelwork fabrications, cut outs etc. shall be smoothed free from all
burrs or rough edges, and protection against abrasion to cables added where
appropriate.
5.1.24 No welding to building steelwork or structures shall be permitted
without the written consent of the CA.
5.1.25 Screws or studding shall, after installation, be reduced in length so that
no more than two threads are exposed. All cut ends shall be treated with an
approved rust inhibiting primer.
20 | P a g e
5.1.26 Low voltage power cable shall generally be wire armoured to BS 6346,
BS 5467, BS 6724 or BS 6360 with XLPE compound insulation and/or LSF
bedding, as detailed further in this Specification.
5.1.27 Cables shall be fixed to tray, or direct to a surface using cable cleats.
The intervals for fixing shall be as stated in the IEE Regulations, or as stated
by the cable manufacturer where no regulation applies. Where fixed to cable
trays, power cables having an overall diameter of 10mm or less may be
strapped to the tray using PVC covered metal strip of appropriate colour, fixed
using brass pins and nuts Cable routes shall be so arranged that cables,
hangers, cleats etc. do not come into contact with or in close proximity to
piped services.
5.1.28 At all terminations, the sheath and armour shall be secured by brass
compression glands, of a type suitable for both cable and location. The glands
shall be complete with both earthing tag and plastic shroud.
5.1.29 Connections to the earthing tag shall be by brass nuts and bolts. At the
point of termination for SWA cables feeding any equipotential zone, the cable
shall terminate in a BICC type BW gland with integral earth and 481AA
insulated adapter.
5.1.30 Any underground jointing of XLPE SWA cables required shall be
achieved using proprietary shrink wrap or resin joint kits manufactured by a
CA approved supplier.
5.1.31 Copper bonds shall be provided within the joint to maintain full earth
continuity. The resistance shall be no greater than that of the live conductors
and the insulation resistance between cores and between cores and earth
shall be no less than that of the original cable.
5.1.32 Cores shall be phased out. Either coloured core insulation or coloured
sleeve markers shall identify the phases.
5.1.33 Cables buried in the ground shall be in a trench 500mm deep, with
100mm of sand laid in the bottom, the cable laid on the sand then covered
with 100mm of sand. Propriety 100mm wide cable marker tape marked
“Electric Cables” shall be placed over the full length of the route, then back
filled with sifted earth, free from rocks and stones, well rammed and 200mm
below finished ground level and the ground then reinstated to existing ground
level.
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5.1.34 Cables which follow the same route, and are laid in the ground, shall
be in horizontal formation with spacing between cables, where possible, of
not less than 150mm, with the exception of single core cables, which shall be
laid in trefoil formation and touching along their entire length. Each group of
cables shall be indicated by separate marker tapes.
5.1.35 Cable ducts shall be installed under roadways, crossing roadways and
for building access.
5.1.36 Cable ducts shall be smooth bore vitrified clay, or heavy duty plastic
socket and spigot type. All ends of conduit shall be sealed around the cable
with a waterproof and gas proof seal of the self-extinguishing plastic foam
type.
5.1.37 Any spare cable ducts shall have suitable end caps.
5.1.38 Cable markers, concrete block type shall be placed in the route at a
maximum of 50 metres apart and at each change of direction with a minimum
of two markers per route, and at each entry to a building.
5.1.39 The Contractor or their Electrical Sub-Contractor shall provide all
covers, markers tapes etc. The laying of sand, covers, tapes, concrete and
markers shall be by the Contractor but the Electrical Sub-Contractor shall
ensure and be responsible for compliance with requirements.
5.1.40 Prior to the cable(s) being laid, the CA shall be informed and
arrangements made for an inspection to be made at each stage.
5.1.41 Where cables are to be buried in water logged ground, or have to
cross streams, then cables with a polyethylene sheath shall be employed.
5.1.42 Where multi-core cables are employed, each core shall be numbered
and numbered markers at each end shall identify the terminal number of the
equipment to which the core is to be connected.
5.1.43 Below the armour clamp of all terminations, a non-corrosive
identification band shall be fitted giving details of the type and size of cable in
5mm stamped letters and figures.
5.1.44 Where power cables pass through walls or floors, they shall pass
through properly formed openings, which shall be fire stopped after
installation using a proprietary foam.
22 | P a g e
5.1.45 Where power cables are laid in a common trench with other services,
particularly communication cables, there shall be a minimum separation of at
least 300mm between these services.
5.2 Working Drawings
5.2.1 All drawings are diagrammatic only, and shall be used as a guide only to
assist in the compilation of the Tender.
5.2.2 The Contractor shall provide a full and complete set of working
drawings prior to any work commencing on site. These shall furnish the
dimensioned builders work drawings for all cable trenches, ducts, concrete
pads etc.
5.2.3 All final routings of MV/LV sub-main cabling, conduits, trunkings, cable
trays etc. and locations of accessories, items of equipment and plant shall be
fully agreed with the CA prior to the commencement of the installation.
5.3 Related Builders’ Works
5.3.1 Where services breach fire barriers, then the Contractor shall ensure
proper re-instatement is carried out to maintain adequate fire and smoke
protection.
5.4 Builders Work Drawings
5.4.1 The Contractor shall provide a set of Builders Works Drawings to allow
the correct installation of the new services for all holes, chases, cable
trenches, ducts, concrete pads, etc. to allow the correct installation of the
new services.
5.5 Earthing and Bonding
5.5.1 The whole of the earthing and bonding installations shall be installed
and tested in accordance with the requirements of the 17th Edition of the IEE
Wiring Regulations, Local Supply Authority, this Specification and in
compliance with BS 7430 (earthing protection).
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5.6 Testing
5.6.1 Conduits and cables shall be tested during the progress of the work
before their concealment, as follows:
(i)
Continuity of protective conductors and equipotential bond of conduit,
metal sheath etc.
(ii)
Continuity of current carrying conductors.
(iii) Insulation resistance of MICC cables.
5.6.2 Immediately prior to completion, and in the presence of the CA, carry
out the initial inspection and testing as per 17th Edition of the IEE Wiring
Regulations.
5.6.3 Test results are to be documented on test charts containing the
following information for each circuit:
(i)
Design current (Ib).
(ii)
Earth loop impedance (Ze) at furthest point.
(iii) Line neutral impedance at furthest point.
(iv) Loop resistance (R1 + R2).
(v)
Continuity of ring final circuit conductors.
(vi) Insulation resistance readings.
(vii) Polarity test.
(viii) RCD test, where applicable.
5.6.4 In addition to the aforementioned information, each chart shall contain
details of the external characteristics appertaining to the distribution board.
5.6.5 Following successful inspection and testing, XX copies of the inspection
test certificates shall be forwarded to the CA within XX days of the tests being
completed, or at practical completion, whichever is the sooner.
5.6.6 Note that the CA will not accept the installation as practically complete
until a test/completion certificate is presented.
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5.7 Identification, Notices and Documentation
5.7.1 Labels shall be provided to indicate the purpose of switchgear and
control gear, unless there is no possibility of confusion. Labels shall be bolted
to the equipment, unless otherwise specified.
5.7.2 Distribution board schedules and ‘As Fitted’ drawings shall contain such
information as is required to satisfy clause 514-09 of the regulations. In
addition, ‘As Fitted’ drawings shall detail conduit runs, giving sizes.
5.7.3 Supply and fit such notices as may be required by regulation 515-08 to
514-13 inclusive.
5.8 Specialist Tools
5.8.1 Any tools that are required of a special nature for any equipment etc.
installed by the Electrical Sub-Contractor, shall be handed to the CA at the
hand over meeting, in a purpose designed box or receptacle.
6.0 PARTICULAR SPECIFICATION – AUTOMATIC
CONTROLS, WIRING AND ASSOCIATED ELECTRICAL
WORKS
6.1 Compliance with Standard Specification
The following clauses should be reading in conjunction with the General
Specification and take precedence.
6.2 Introduction
6.2.1 This Particular Specification relates to the upgrade and enhancement of
the automatic control system for [INSERT ORGANISATION’S DETAILS]. The
aim is to develop comprehensive consistent BMS strategy incorporating low
energy control strategies.
6.2.2 The scope of works will comprise the following:
 Add specific project requirements.
25 | P a g e
All new BMS installations will be linked to the [INSERT
ORGANISATION’S DETAILS]’’s existing [ADD SYSTEM(S) DETAILS] BMS
utilising the [INSERT ORGANISATION’S DETAILS]’s IT network, unless
6.2.3
instructed otherwise.
6.2.4 The works will follow an agreed Programme (add specific project
requirements). Installation of new BMS upgrade and enhancement will include
the following: [ADD/OMIT AS APPROPRIATE].
 Installation of additional controls for heating system
 Associated control wiring
 Associated electrical wiring
 Strip out works
 Commissioning, testing and setting to work.
 Provision of O&M documentation and “as fitted” drawings.
 XX months defects liability and maintenance.
6.3 Description of Operation
The BMS control system should be designed to maximise the efficiency of the
heating, ventilation and air-conditioning plant serving each building. The
description of operations below and the points schedule should be considered
indicative and should be further developed by the BMS Contractor based on
detailed site surveys and any further information obtained from site O&M
Manuals and by interrogation of the existing control system.
6.3.1 Heating Plant
Plant Description
Add specific project details
Plant operation
The plant is to be operated by hand/off/auto switches located on the control
panel fascia. In auto mode the heating plant is to be operated by the BMS
under demand from individual zone optimised time-schedules,
The boilers are to operate in sequence with the duty boiler being rotated on a
weekly basis. Fault status for each boiler is to be monitored on the BMS
raising an alarm and activating the next boiler in sequence.
The heating circulation pump-set are to operate on a duty/standby basis with
the duty pump rotated on a weekly basis. A differential pressure switch
26 | P a g e
installed across the pump set is to provide a flow status on the BMS and
facilitates auto-changeover in the event of the duty pump failing.
The use of Inverter closed loop controls is encouraged for heating circulation
pump-sets and the contractor shall evaluate the efficiencies associated with
the deployment of inverter controls
Where applicable the flue dilution fan operates when there is demand from
the heating plant and/or HWS heater. A differential pressure switch placed
across the fan is to provide an air flow status on the BMS, providing a critical
alarm in the event of air flow failure.
Plant Safety interlocks
Pressurisation unit – in the event of a fault on the pressurisation unit the
heating plant will be shutdown by hardwired interlock; fault status will be
monitored by the BMS and a high-level alarm raised.
Emergency plantroom safety circuit – in the event of an emergency knock-off
button or thermal link being activated the gas valve and mechanical plant will
be shutdown by hardwire interlock; fault status will be monitored by the BMS
and a high-level alarm raised.
Fire alarm – in the event of the fire alarm being activated the gas valve and
mechanical plant will be shutdown by hardwire interlock; fault status will be
monitored by the BMS and a high-level alarm raised.
Control
i) Boiler start-up – the boiler is demand lead, and is to be enabled on
demand from aggregated individual zone optimiser / time-schedules /
protection / flow demand (in the case of DHW).
ii) Optimisation / tome controllers – each heated zone (VT circuit, CT
circuit or isolated sub-zone) is to have an individual optimiser /
intelligent time controller. The BMS will monitor the ambient
temperature and space temperatures for each zone to determine the
optimum start and stop times. Where a zone serves more than one
floor a room temperature sensor should be installed on each level in a
representative location away from any external influence (heat source,
solar gain, etc.). Each optimiser will generate a heating demand for
the boiler plant and its associated zone pumps. Unless otherwise
stated the optimiser will be set to match the zone’s core occupancy
hours with a optimiser and room temperature set points set at 19°C,
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or in line with the client organisations environmental policies. An
optimiser boost and or extend function will allow the zone temperature
to be met efficiently outwith of normal operational hours.
iii) High outside air temperature interlock (eco setting) – When the
external temperature reaches or exceeds 14 to 16°C (operator
adjustable) or the zone temperature is above approximately 23°C
(operator adjustable) the associated zone heating plant is to shut
down.
iv) Summer/winter/holiday control – to allow the manual seasonal control
of the heating plant, status to be monitored by BMS with an alarm
being raised. Where there is a DHW system controlled by the system,
this is to remain operational.
v) Boiler sequencing
Condensing boilers - sequence the boilers to maintain a compensated
common boiler flow temperature initially set up as shown in the table
below. In addition the BMS also monitors the boiler return
temperature. Facility should also be provided for space temperature
influence of the compensated temperature set point.
Outside air temperature
°C
0
20
Compensated
flow
temperature setpoint
°C
80
50*
*Where boilers serve HWS calorifiers the minimum flow temperature should
be 65°C
Non-condensing boilers may be controlled to maintain a compensated
return temperature setpoint, the manufacturer’s minimum return
temperature requirements must be observed.
Boilers should be sequenced with approximately a 2 – 5°C differential
to ensure stable control.
For new installations the boilers should be controlled by a 0 – 10V
signal or 4-20mA analogue control signal.
28 | P a g e
vi) VT circuit – modulate the VT valve to maintain a compensated flow
temperature initially set up as shown in the table below. The BMS will
monitor the VT return temperature; the temperature difference
provides an indication of the circuit heating demand (reefer to ramp
table below).
Outside air temperature
°C
0
20
Compensated
flow
temperature setpoint
°C
80
20
Fan convector circuits – compensated flow temperature range: 50 –
80°C
Underfloor heating – compensated flow temperature range: 35 –
50°C
vii)
VT Circuit room influence
viii)

Negative room trim: For every 1ºC that the minimum space
temperature falls below the space temperature setpoint the VT
flow setpoint will be increased by 3ºC. This is subject to a
maximum setpoint of 80ºC.

Positive room trim: For every 1ºC that the minimum space
temperature rises above the space temperature setpoint the VT
flow setpoint will be reduced by 3ºC. This is subject to a
minimum setpoint of 20ºC.
CT circuit – The CT pumps are to operate under demand from
the AHU and reheat/fan coil unit valves; demand being defined
as a valve open by 25% or more for 5 minutes.
ix)
Frost and Fabric Protection –

Stage 1 – activate circulation pumps when the outside air
temperature falls to 1ºC, and disable once OAT rises to 3ºC.

Stage 2 – activate heating system should the primary circuit
pipework temperature detect a temperature below 10°C. Open
all AHU heat coil and zone heating valves to allow heated water
to flow. Disable once the return temperature rises to 20ºC.
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
Stage 3 (fabric protection) - should the space temperature in
any zone fall below 12°C the associated heating plant should be
operated to raise the temperature by 1°C.
x) Dry Cycling control (For boilers with an output of 200kW or greater)| –
the BMS is to monitor the flow and return temperatures for each boiler
and calculates heat transfer rates and establishes a load profile for
each boiler. Firing of the boiler is to be inhibited for light load
conditions or dry cycling (firing of the boiler due to standing loses).
6.3.2 HWS Plant
Plant Description
Add specific project details
Plant Operation
HWS Heater
The HWS hot water heater is to operate by a dedicated BMS time-schedule.
Fault status is to be monitored on the BMS raising an alarm. A differential
pressure switch is to be installed across the HWS secondary pump provides a
flow status on the BMS (alternatively a current transformer may be used to
prove pump status).
The time-schedule will be set to meet the requirements of the site and should
be set such that the hot water is utilised during the day so that there is
minimal overnight HWS storage. Residential sites will require 24/7 provision.
For schools sites with HWS calorifiers it may be appropriate to heat the
system up for two or 3 discrete periods of the day to match consumption
requirements. This will avoid the heating plant running continuously.
HWS Calorifier
Operation as above. Primary HWS pumps are to operate in sequence on a
duty standby basis with the duty pump rotated on a weekly basis. A
differential pressure switch installed across the pump set to provide a flow
status on the BMS and facilitates auto-changeover in the event of the duty
pump failing. The de-strat pump is enabled independently.
Plate Heat Exchanger
Operation as above. The BMS will monitor the PHE common fault status from
the packaged unit.
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Control
HWS Heaters - operate under its integral controls and is set to maintain a
HWS flow temperature setpoint of 60°C. The BMS is to monitor the flow
temperatures and raise alarms should the flow temperature exceed 65°C or
fall below 55°C (after a predetermined period, initially set to 30 minutes).
The BMS is to monitor and logs the HWS return temperature.
HWS calorifiers – the BMS is to modulate the HWS diverting valve to maintain
the HWS setpoint of 60°C. A hi-limit thermostat fitted to the calorifier deenergise the HWS valve actuator activate spring safe function and close the
valve in the event of detecting a HWS temperature of 70°C.
Plate heat exchange – such units will operate under integral controls.
6.3.3 Ventilation Plant
Plant Description
Add project details
Plant Operation
The ventilation plant is operated by hand/off/auto switches located on the
control panel fascia. In auto mode the plant is to be operated by individual
system optimised time-schedules for air handling units (AHUs) plant or timeschedules for fan only applications.
All fans motors should normally be fitted with and VSD which is to be
controlled by either temperature and/or CO2 control. (This is optional)
Differential pressure switches are to be installed across the supply and extract
fans to provide air flow status’s on the BMS. A differential pressure switch is
to be installed across the fresh air filters to provide a filter dirty status on the
BMS.
Control
Temperature control
Frost control – the BMS will modulate the frost coil valve to maintain an offfrost coil temperature monitored by a duct sensor downstream. A capillary
31 | P a g e
thermostat clipped to the downstream face of the frost coil is to shut down
the AHU supply fan by hardwired interlock. The frost coil should be fitted with
a spring-open actuator such that in the event of the frost thermostat being
activated a hardwire interlock de-energises the actuator, with the spring
mechanism opening the valve to allow flow through the coil. Activation of the
frost coil stat is monitored on the BMS raising an alarm.
AHUs serving terminal units and reheaters
The heat reclaim unit, heating coil and cooling coil (where applicable) are to
be modulated to maintain a compensated supply air temperature initial set as
detailed below (note these can be changed after initials set dependant on
client requirements):
Outside air temperature
°C
0
20
Supply air temperature
setpoint
°C
21
15
The heat reclaim unit; either recuperator or mixing dampers are to be
modulated to provide free heating or cooling determined by comparing the
fresh air and return air temperatures. (Where humidity is being controlled,
enthalpy control shall be used).
AHUs for ventilation systems without terminal units
The heat reclaim unit, heating coil and cooling coil (where applicable) are to
modulate to maintain a space or return air temperature of 22 +/- 2°C. Heat
reclaim control as detailed in paragraph above.
AHUs serving dedicated areas such as theatres, meeting room etc should
deploy CO2 Control and Occupancy Control
Where VSDs are fitted, room or duct mounted CO2 sensors are to be installed
and monitored by the BMS to modulate the supply and extract fan VSDs to
maintain satisfactory air quality initial as detailed below by the following
typical values: (user adjustable)
Space
(ppm)
CO2
reading VSD speed
600ppm
1,000ppm
50%
100%
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Presence detection sensors (microwave) are to be installed to provide
occupancy control to rooms with intermittent occupancy. On morning startup the AHU is to be operated to bring the room up to temperature (initially)
set to 19°C. Once reached, should no occupancy be detected after a period of
15 minutes (adjustable) the AHU is shutdown. On detecting occupancy, the
AHU is restarted and will continue to operate under presence detection
control.
AHU serving Variable Air Volume (VAV) system fan speed control
The supply fan variable speed drive (VSD) is modulated to maintain a static
pressure setpoint (to be determined during commissioning). Velocity sensors
are to be installed and located in the supply and extract ductwork monitor the
air flow rates (m³/s). The extract fan VSD is to be modulated to maintain an
air flow rate of a minimum of 80% of the supply fan.
6.3.4 Chilled Water Plant
Plant Description
Add specific project details
Plant operation
The plant is operated by hand/off/auto switches located on the control panel
fascia. In auto mode the chilled water plant is to be operated under demand
from AHU and fan coil units. Demand being defined as a cooling valve being
open by 25% or more for 5 minutes,
The chillers are to operate in sequence, with the duty chiller being rotated on
a weekly basis. Fault status for each chiller is to be monitored on the BMS
raising an alarm and activating the next chiller in sequence.
The chilled water circulation pump-set operate on a duty/standby basis with
the duty pump rotated on a weekly basis. A differential pressure switch
installed across the pump set is to provide a flow status on the BMS and
facilitates auto-changeover in the event of the duty pump failing.
The use of Inverter closed loop controls is encouraged for chilled water
circulation and the contractor shall evaluate the efficiencies associated with
the deployment of inverter controls
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Plant Safety interlocks
Pressurisation unit – in the event of a fault on the pressurisation unit the
heating plant will be shutdown by hardwired interlock; fault status will be
monitored by the BMS and a high-level alarm raised.
Control
i) Low outside air temperature interlock – When the external
temperature falls to 12°C (operator adjustable) the chilled water plant
is to shutdown.
ii) Summer/winter control – shutdown the heating plant between 1st
October and 1st April (operator adjustable).
iii) Chiller sequencing
The chillers are to be sequence to maintain a compensated flow
temperature setpoint initial set as shown by the following typical
values:
Outside air temperature
°C
10
25
Compensated
flow
temperature setpoint
°C
9
6
For new installations the chillers should be controlled by a 0 – 10V (or
4-20Ma) analogue signal or via BAC-net or equivalent.
6.3.5 Heat pump and air conditioning units
The BMS is to operate the heat pump and air conditioning units under
individual time-schedules.
Presence detection sensors (microwave) within each room shall switch off the
units should no occupancy be detected for a period of 10 minutes (user
adjustable). The BMS Contractor will be responsible for the provision of any
necessary interface to achieve remote enable of the units.
A temperature sensor within each room will provided an alarm should the
temperature fall below approximately 18°C or exceed approximately 25°C
(when the unit has been enabled to operate).
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Low ambient shutdown: the air-conditioning units are to be inhibited from
operating when the ambient temperature falls below 12°C (user adjustable).
This applies to units providing cooling only.
Where there is an installation with an extensive number of heat pumps
installed an interface controller will be installed to allow communication to be
carried out via BAC-net or equivalent communications protocol.
6.3.6 Electric Storage Heaters
Plant operation and control
Storage heaters are to be enabled by the BMS under demand from individual
optimised zone time-schedules.
Contactor will be installed to facilitate BMS operation, and space temperature
sensors will be installed in each zone.
The optimiser will determine the required charging period to meet the
requirements of the zone. The optimiser will be self-learning so that it can
adapt to the requirements of the heating zone.
6.3.7 Plant extension facilities
Each heating zone is to be provided with a plant extension switch on the
control panel fascia or mimic panel located in an area accessible to staff only.
The switches enable each zone to be extended for normally a maximum of 2hour period (adjustable on the BMS. If operated during the normal day the
extension period will be added to the normal time-schedule. If operated
outside normal hours the plant will operate immediately. Status of the
switches shall be indicated on the graphics.
Time extension switches should be provided for the HWS plant and ventilation
plant.
6.3.8 Plant manual function
A plant Auto/Manual (Hand) switch will be provided on the control panel.
Maintenance staff is to be instructed to use this switch should they need to
operate any plant in hand. A hi-level alarm will be raised on the BMS.
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7.0 PARTICULAR SPECIFICATION - BMS
MAINTENANCE
7.1 Introduction
7.1.1 The contractor will be requested to provide BMS maintenance services
selected from XXX levels (the final selection of required services levels is
subject to confirmation by the [INSERT ORGANISATION’S DETAILS]) Delete
as appropriate.



Standard service
Fully comprehensive service
Enhanced energy performance service
7.1.2 The requirements for each level of service are defined in the following
sections.
7.2 Standard Service
7.2.1 The contractor shall have a 24 hour bureau facility to provide Remote
Response, Alarm Management, Call-out Response and Energy Management
Services. An Early Warning monitoring system will be provided for the site to
identify any related heating problems prior to the commencement of the
school day.
7.2.2 The contractor shall be able to stay connected to all sites 24/7, 365
days, which have remote connectivity for the purposes of supporting the
engineers, testing remote connectivity and to make ‘Change-Control’
alterations which are to be remotely logged.
7.2.3 The Bureau facility shall respond to critical alarms within XX
seconds/minutes from generation. All critical alarms shall be logged.
7.2.4 All critical alarms shall be logged in a secure, managed database. Alarm
logs shall be automatically generated and posted online for the [INSERT
ORGANISATION’S DETAILS]’s use.
7.2.5 The contractor shall interrogate the site in response to a call-out prior to
attending site to establish more accurately the nature of the fault and the
best course of action, including:
36 | P a g e




Locate and diagnose fault remotely, avoiding unnecessary site
visit
Assess whether the fault can be permanently or temporarily
fixed remotely
Assess whether the fault is a controls issue or another vendor’s
equipment fault – avoiding unnecessary site visit
Assess what parts or materials may be required
7.2.6 The contractor shall log and report on all call-outs. The reports shall
include the following:
 List of all Calls
 Outstanding Calls
 Completed Calls
 Cancelled calls
 Rejected Calls
 Call be number
 Calls total
 Calls by site
7.2.7 The accuracy of monitoring and control sensors is to be checked at the
operating conditions. The test instrument used to assess sensor accuracy at
the operating condition shall be capable of measurement accuracy better than
that of the control sensor itself. For example BMS temperature sensor
accuracy is typically +/- 0.5oC, whiled the test instrument might measure to
+/- 0.2oC. Typical BMS sensor accuracies are:





Relative humidity +/-5% RH
Pressure +/-2% of normal operating condition
Light level +/-5% of indicated reading
Air and water velocity +/-2% of normal operating condition
CO2 +/-5% of indicated reading
7.2.8 The following checks will be undertaken:
Electrical
 Check panel exterior for signs of damage. Ensure main door electrical
isolator is engaged and operational.
 Check tightness of all electrical terminations. Check and re-torque
busbar nuts and bolts (in accordance with IEE Regulations).
 Check integrity of power cabling insulation at frequency given in IEE
Guidance Note 3 Inspection and testing.
37 | P a g e
 Check for signs of overheating of components such as contactors,
cables, connectors, as well as general internal temperature within
panel.
 Ensure ventilation fans and grilles are functional and clean.
 Check settings, ratings and operation of protective devices such as
overloads, residual current devices, circuit breakers and fuses.
 Check operation of isolators, relays, contactors and starters. Where
readily accessible inspect contact faces.
 Check incoming power supply voltages. Visually inspect transformers
and power supplies.
 Ensure cleanliness of panel and components and ensure that risk of
ingress of dirt or moisture is minimised.
 Ensure status indicators on all panels are functional.
IT
 Run virus detection software, (as recommended by software supplier).
 Ensure general cleanliness and operation of screen, mouse, printers,
keyboard, housings, cables and connectors.
 Check remaining free storage capacity.
 Perform soft start of computer and ensure system restarts
satisfactorily.
Hardware
 Check operation of frost protection interlocks, system pressure
interlocks, gas supply interlocks, lock stops, fire interlocks, and other
system interlocks. This may be undertaken in conjunction with related
‘software’ maintenance tasks.
 Undertake visual inspection of all equipment for: bent spindles,
damaged casings (such as sensors and actuators), damaged cables,
insulation or conduits, gland and pipework leaks, loose connections,
failure of mountings, corrosion, and risk of ingress of moisture or dirt.
 Check and calibrate principal control sensors (at least every six
months).
 Check calibration and condition of general control and monitoring
sensors. Ensure temperature sensors are effectively monitoring the
controlled conditions, for example they are not influenced by other
heat sources, thermal contact is effective (at least every six months).
 Check operation of differential pressure switches, level switches, status
indicators, time clocks, timers and optimisers (at least every six
months).
 Check operation of protective devices such as high-limit thermostats,
flow and pressure measurement devices. Note that hidden failures can
38 | P a g e






occur to these protective devices that fail safe and thus the failure is
often undetectable until the safety device is required to operate (at
least every six months).
Check operation of variable speed drives according to manufacturers’
recommendations (every 12 months).
Check operation of valves and damper actuators is correct; drive
actuators open and closed and to intermediate positions. Check for
hysteresis and that any position feedback devices/auxiliary switches
operate correctly. Check spring-return if applicable. Inspect for valves
and dampers letting by. Check tightness of the shaft connection. This
may be undertaken in conjunction with related ‘software’ maintenance
tasks (at least every six months).
Replace outstation battery (in accordance with manufacturers’
recommendations).
Interrupt electrical supply to each outstation, reinstate and ensure
system restarts satisfactorily.
Confirm that all critical alarms are received by the central supervisor
(at least every six months).
Check spurious alarms and reported faults (as incurred).
Software and Communications




Check real-time clock setting (every six months or less).
Back up all outstation files. Store one on site and one off site.
Review need for existing data logs. Delete/archive logs as required.
Check operation of all plant including tests of all software interlocks
and safety devices by forcing plant on/off, open, closed. This may be
undertaken in conjunction with related ‘hardware’ and building
performance maintenance tasks.
 Check communications between central supervisory computer and
outstations and other networked devices.
 Maintain a log book of all changes made to the system (as
undertaken).
Building Performance
 Verify and review operation and settings for control loops, setpoints,
dead bands, overrides, offsets, time switching schedules, optimised
start/stop routines, rotational points, hours run meters, and energy
and water meters. Check that temperatures/relative humidities/CO 2
concentrations and so on are maintained within the design intentions
of the building/plant. Adjust settings in conjunction with the building
39 | P a g e
manager to achieve the required internal environmental conditions (at
least every six months).
 Interrogate recent historical records.
Identify and investigate
anomalies.
 Check schematics indicate correctly (at least every 6 months).
7.3 Fully Comprehensive Services
7.3.1 The fully comprehensive service will include all of the items included in
the Standard Service, plus the following additional services:
7.3.2 Additional Services:


Emergency call-out, with response within xx working hours
The provision and installation of all parts, software, consumables etc.
as required to keep the BMS in a fully functioning state.
7.4 Enhanced Energy Performance Service
The enhanced energy performance maintenance service will comprise three
elements:




Establishment of building energy performance baselines and
monitoring of ongoing performance against these.
Regular review of BMS set-points relative to building operational
requirements and verification.
Identification of cost-effective BMS enhancement “spend to save”
opportunities.
Demand Response Opportunities – e.g. Triad Charge Avoidance and
STOR
7.4.1 Energy Performance Baselines and Monitoring.
The contractor shall provide an Energy Software Portal where the [INSERT
ORGANISATION’S DETAILS]’s automated monitored and targeted (aM&T)
electricity and heating fuel (gas, oil, biomass) data for each site can be
viewed by the client at any time. The data will be presented by automatically
generated charts and reports.
The contractor will establish energy performance baseline figures for each
building served by the BMS. Energy building profiles for each day of the
previous base line periods shall be developed based on historical data
40 | P a g e
preferably from the [INSERT ORGANISATION’S DETAILS]’s half hour data
(HHD) and installed sub-metering.
On a daily basis, energy data will be collected for each site using File Transfer
Protocol (FTP), transferred in CSV format or obtain directly from sub-meters
or directly from energy provider secure websites. This data will automatically
be tabulated and compared against the building profiles for each site.
Variations in data above predetermined limits will generate an Energy Excess
alarm and “potential waste” reports etc.
In the event of an Energy Excess alarm the contractor will log the event, carry
out a thorough investigation to determine cause(s) of excessive energy usage
by remote BMS connection and provide a detailed report detailing remedial
actions taken and any appropriate recommendations.
Using the Building Profile as a benchmark the contractor shall log all HHD for
electricity and gas and use this data to produce appropriate reports and
charts for each site. Charts will be provided for consumption kWh, CO2 and
£.
The contractor will compare the baseline performance figures with relevant
benchmark figures (where these exist), depending upon the building type.
The contractor will calculate weather connected “moving annual total”
consumption figures for each building and will produce a report showing
changes in consumption, relative to the baseline figures along with relevant
regression reports etc. The report (format to be agreed with the [INSERT
ORGANISATION’S DETAILS]), will identify in particular, any buildings where
the energy consumption in increasing for example by Cusum analysis.
Energy / MM&T Software / Portal - The contractor will produce and host an
Energy Portal (web based) to allow the [INSERT ORGANISATION’S DETAILS]
to access the reports and charts, accessibility having a hierarchy control with
usernames and passwords.
The Portal shall have a Dashboard style layout which can be configured to
meet the requirements of the [INSERT ORGANISATION’S DETAILS].
Energy Tracker - The contractor shall forecast and track expected savings as
agreed by the [INSERT ORGANISATION’S DETAILS]. Forecasts shall be based
on measuring current consumption and against historical data after the data
has been ‘weather corrected’ using official heating and cooling degree day
data and any other relevant “driver” variable.
41 | P a g e
Tracker information reports will include the following types of information percentage savings, cumulative savings, regression quality and consumption
before and after etc.
8.4.2 Review of BMS Set-Points. The contractor shall compile a log sheet, on
which they will record all BMS set-points with regard to operating times and
temperatures. The sheet will also include space for the corresponding
requirements of the [INSERT ORGANISATION’S DETAILS] to be recorded (this
to be determined in consultation with [INSERT ORGANISATION’S DETAILS]
estate or energy staff).
Monthly or more frequently the contractor shall:

Confirm any changes in the [INSERT ORGANISATION’S DETAILS]’s
time and temperature requirements (updating the log sheet
accordingly).

Ensure that the BMS is set in line with the [INSERT ORGANISATION’S
DETAILS]’s latest requirements.

Use trend logs to confirm that operating times and temperatures
actually being delivered, match those set into the BMS. This will
include verification of any “out-of-hours” plant operation (for example
as may be covered by frost protection).

Produce a concise report confirming the checks made and any issues
resulting.
7.4.3 Identification of “Spend to Save” Opportunities. The contractor will use
his expertise and developing knowledge of the [INSERT ORGANISATION’S
DETAILS] and its services, to identify potentially cost-effective opportunities
to reduce the building energy use by enhancements to the site’s BMS and
associated controls (for example, the installation of additional zone valves).
The contractor shall present a business case for each proposal to the [INSERT
ORGANISATION’S DETAILS], defining installation costs and itemised savings
resulting from reduced energy use, maintenance etc. The methodology used
to estimate savings will be clearly defined.
Implemented projects will be monitored by the Energy MM&T software
tracker.
It is anticipated that the [INSERT ORGANISATION’S DETAILS] will be in a
position to fund the installation cost-effective enhancements, as an addition
42 | P a g e
to this BMS contract. It may alternatively be feasible for the Contractor to
provide external funding or enter into an Energy Performance type contract or
share of savings arrangement.
7.4.4 Demand Response Opportunities
The contract is will consider the application of Demand Response
Opportunities; Triad charge avoidance and STOR.
Triad charges relate to the National Grid’s transmission charges. They
measure demand readings three times a year and use an average of these
readings to calculate Transmission Network Use of System (TNUoS) charges.
In March each year the National Grid publishes the three highest maximum
demand (MD) readings that have occurred between November in the previous
year and February of the current year. A forecast of these dates is provided
in advance. By reducing consumption by operating the standby generators
(and through load shedding) at the forecast times it is possible to significantly
reduce the charges.
STOR is one of National Grid’s most important tools for securing the national
electricity system in real time. Under the STOR arrangements, National Grid
pays a “rent” (termed availability) for STOR capacity, and pays a usage
charge (utilisation) when the reserve is needed, e.g., during demand peaks,
or when large power stations fail. STOR is a year-round service. There are a
number of companies who tender for the National Grid STOR contracts and
recruit generator sites owners to meet the agreed capacity requirement. The
value of the STOR contract is dependent on a tender negotiation and the
number of hours of utilisation. Savings can be achieved through load
shedding of non-essential equipment, e.g. HVAC chillers, pumps etc and by
the operation of standby generators, where applicable.
43 | P a g e
8.0 SCHEDULE OF RATES AND PERFORMANCE
CONTRACT
8.1 Introduction
8.1.1 The [INSERT ORGANISATION’S DETAILS], wish to form a collaborative
relationship with a BMS Contractor who they can work with over the next xx
years to roll out the BMS Upgrade across their site on a phased basis.
8.1.2 The [INSERT ORGANISATION’S DETAILS] plan to set up a Framework
Agreement based on a Schedule of Rates together with a Performance
Contract. Once in place it is planned that future phases would be carried out
under the Schedule of Rates, avoiding the need to go out to competitive
tender.
8.2 Schedule of Rates
8.2.1 The Contractor shall complete the Schedule of Rates proforma included
in the Tender documentation. This includes a comprehensive schedule of
rates for all materials and equipment applicable to the works, which apply to
this tender or are likely to apply to future phases. The schedule shall equate
to the tender/quotation sum.
8.2.2 The Schedule of rates should also provide an acceptable level of
transparency and provide details of design, project management and margin
contributions along with any mark up costs on 3rd party contractors and
bought in equipment etc.
8.2.3 The tendering company should also provide prices for the three
maintenance options as in 8.1.1 for:
a) new installations
b) existing BMS installations
8.2.4 Mechanism for accommodating inflation. Schedule rates will be adjusted
annually in line with an index to be determined under the contract.
44 | P a g e
APPENDIX 1 BMS Points List
To be completed for specific projects as applicable
45 | P a g e
APPENDIX 2 Provisional Programme of Works
To be completed for specific projects as applicable
46 | P a g e
APPENDIX 3 TENDER ANALYSIS
FOR THE BMS INSTALLATION AT
THE [INSERT ORGANISATION’S DETAILS],
We the undersigned, do hereby offer to carry out the whole of the work
described in this Specification, and associated drawings (listed in Table of
Contents contained within this Specification), in strict accordance with the
terms and conditions thereof, for the following sums of money:
1
Costs arising from Preliminaries
£
2
Costs arising from CDM
£
3
Site No.1 – carry out the installation of the BMS upgrade £
including the supply, installation and commissioning of all
added points.
4*
Site No.2 – carry out the installation of the BMS upgrade £
including the supply, installation and commissioning of all
additional points.
5
Costs arising from xx months defects liability
£
6
Contingency (x%)
£
7
Any costs not included in the above
£
Grand Total (Exc. VAT)
£
*add new lines for each site within the phase of works
GRAND TOTAL IN WORDS
TENDERER:
..................................................................................................................
ADDRESS:
...............................................................................................................
.................................................................................................................
SIGNED:.............................................................................................
DATED:..............................................................................................
47 | P a g e
TYPICAL SCHEDULE OF RATE / BILL OF MATERIALS
Item
Manufacturer
Model
Space temperature sensor
Duct temperature sensor
Immersion temperature sensor
Outside air temperature sensor
Frost thermostat
Differential pressure switch
Current transducer
Wind sensor
Solar sensor
Valve & actuator (0 - 10V)
Valve & actuator (0 - 10V)
Valve & actuator (0 - 10V)
Valve & actuator (0 - 10V)
Damper actuator (15Nm, 0 - 10V)
Outstation
Unit
(e.g.,single,
Length metre)
Supply, installation and commission
single
single
single
single
single
single
single
single
single
single
single
single
single
single
[ADD DETAILS]
[ADD
single
Input/output module
[ADD DETAILS]
Input/output module
[ADD DETAILS]
DETAILS]
[ADD
DETAILS]
[ADD
single
single
Size
20mm
25mm
40mm
50mm
-
Cost
per
unit
Cost
48 | P a g e
DETAILS]
[ADD
DETAILS]
[ADD
DETAILS]
Input/output module
[ADD DETAILS]
Input/output module
[ADD DETAILS]
Other Control devices, list price less
percentage
Control Panel modification for
Outstation < 50 points
Control Panel modification for
Outstation > 50 points
Control Panel manufacture % mark-up
Sub-contractor mark-up (e.g.
Mechanical or building contractor) %
mark-up
Engineering (including software
design, graphics)
Project Management
Commissioning
-
-
single
-
-
-
per point
-
-
-
per point
-
-
-
-
-
-
-
per point
-
-
-
per point
per point
-
Handover & documentation
Service and Maintenance Options
New installation
Standard maintenance service
-
-
Per point
-
-
-
-
-
Fully comprehensive maintenance
cover
Enhanced (Energy) maintenance
service
-
-
-
-
-
-
per
point/annum
per
point/annum
per
point/annum
-
-
single
single
(% list
less)
49 | P a g e
Existing installation
Standard maintenance service
-
-
Fully comprehensive maint cover
-
-
-
-
metres
1mm
-
-
metres
1.5mm
-
-
metres
2.5mm
-
-
metres
4mm
-
-
metres
6mm
-
-
metres
10mm
-
-
metres
16mm
-
-
metres
25mm
-
-
metres
35mm
-
-
metres
1mm
-
-
metres
1.5mm
Electrical Installation
Cabling Installation- Single Phase
(PVC/LSF Single circuit)
Cabling Installation- Single Phase
(PVC/LSF Single circuit)
Cabling Installation- Single Phase
(PVC/LSF Single circuit)
Cabling Installation- Single Phase
(PVC/LSF Single circuit)
Cabling Installation- Single Phase
(PVC/LSF Single circuit)
Cabling Installation- Single Phase
(PVC/LSF Single circuit)
Cabling Installation Single Phase
(PVC/LSF Single circuit)
Cabling Installation Single Phase
(PVC/LSF Single circuit)
Cabling Installation Single Phase
(PVC/LSF Single circuit)
Cabling Installation -3 Phase (PVC/LSF
Single circuit)
Cabling Installation 3 Phase (PVC/LSF
Single circuit)
per
point/annum
per
point/annum
-
-
-
-
50 | P a g e
Cabling Installation - 3 Phase
(PVC/LSF Single circuit)
Cabling Installation - 3 Phase
(PVC/LSF Single circuit)
Cabling Installation - 3 Phase
(PVC/LSF Single circuit)
Cabling Installation - 3 Phase
(PVC/LSF Single circuit)
Cabling Installation - 3 Phase
(PVC/LSF Single circuit)
Cabling Installation - 3 Phase
(PVC/LSF Single circuit)
Containment Conduit Installation
Metal
Containment Conduit Installation
Metal
Containment Conduit Installation
Metal
Containment Conduit Installation
Metal
Containment Conduit Installation
Metal
Containment Conduit Installation
Metal
Containment Conduit Installation
Metal
Containment Conduit Installation
Metal
Containment Conduit Installation
-
-
metres
2.5mm
-
-
metres
4mm
-
-
metres
6mm
-
-
metres
10mm
-
-
metres
16mm
-
-
metres
25mm
–
-
-
metres
1mm
-
-
-
metres
1.5mm
-
-
-
metres
2mm
-
-
-
metres
2.5mm
-
-
-
metres
3mm
-
-
-
metres
4mm
-
-
-
metres
4.5mm
-
-
-
metres
5mm
–
-
-
metres
6mm
51 | P a g e
Metal
Containment
Metal
Containment
Metal
Containment
Metal
Containment
Metal
Containment
Plastic
Containment
Plastic
Containment
Plastic
Containment
Plastic
Containment
Plastic
Containment
Plastic
Containment
Plastic
Containment
Plastic
Containment
Plastic
Containment
Conduit Installation -
-
-
metres
7mm
Conduit Installation -
-
-
metres
8mm
Conduit Installation -
-
-
metres
9mm
Conduit Installation -
-
-
metres
1mm
Conduit Installation -
-
-
metres
1.5mm
Conduit Installation -
-
-
metres
2mm
Conduit Installation -
-
-
metres
2.5mm
Conduit Installation -
-
-
metres
3mm
Conduit Installation -
-
-
metres
4mm
Conduit Installation -
-
-
metres
4.5mm
Conduit Installation -
-
-
metres
5mm
Conduit Installation -
-
-
metres
6mm
Conduit Installation –
-
-
metres
7mm
Conduit Installation -
-
-
metres
8mm
52 | P a g e
Plastic
Containment
Plastic
Containment
Metal
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Plastic
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Containment
Conduit Installation -
-
-
metres
9mm
Trunking Installation –
-
-
metres
50x50
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation -
-
-
metres
metres
metres
metres
metres
metres
metres
metres
metres
metres
metres
metres
metres
metres
75x50
100x50
100x100
150x100
150x50
150x75
200x100
200x150
200x200
300x100
300x150
300x200
300x300
50x50
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Trunking
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
-
-
metres
metres
metres
metres
metres
metres
metres
metres
75x50
100x50
100x100
150x100
150x50
150x75
200x100
200x150
53 | P a g e
Containment Trunking Installation
Containment Trunking Installation
Containment Trunking Installation
Containment Trunking Installation
Containment Trunking Installation
Containment Tray Installation
Containment Tray Installation
Containment Tray Installation
Containment Tray Installation
Containment Tray Installation
Containment Tray Installation
Protective Device - Single Phase RCD
Protective Device - Single Phase RCD
Protective Device - Single Phase RCD
Protective Device - Single Phase RCD
Protective Device - Single Phase RCD
Protective Device - Single Phase RCD
Protective Device - Single Phase RCD
Protective Device - Single Phase RCD
Protective Device - 3 Phase RCD
Protective Device - 3 Phase RCD
Protective Device - 3 Phase RCD
Protective Device - 3 Phase RCD
Protective Device - 3 Phase RCD
Protective Device - 3 Phase RCD
Protective Device - 3 Phase RCD
Protective Device - 3 Phase RCD
Protective Device - Single Phase MCB
-
-
metres
metres
metres
metres
metres
metres
metres
metres
metres
metres
metres
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
200x200
300x100
300x150
300x200
300x300
50mm
75mm
100mm
150mm
200mm
300mm
10A
16A
20A
32A
40A
50A
63A
80A
10A
16A
20A
32A
40A
50A
63A
80A
10A
54 | P a g e
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
3 Phase MCB
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
Protective Device
- Single Phase MCB
- Single Phase MCB
- 3 Phase RCD
- 3 Phase RCD
- 3 Phase RCD
- 3 Phase RCD
- 3 Phase RCD
- 3 Phase RCD
- Single Phase MCB
- Single Phase MCB
- Single Phase MCB
- Single Phase MCB
- Single Phase MCB
- Single Phase MCB
- Single Phase MCB
- Single Phase MCB
- Single Phase MCB
- 3 Phase MCB
Protective Device -
-
-
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
10A
16A
20A
32A
40A
50A
63A
80A
10A
10A
16A
20A
32A
40A
50A
63A
80A
10A
16A
-
-
-
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
20A
32A
40A
50A
63A
80A
63A
80A
3
3
3
3
3
3
3
3
Phase
Phase
Phase
Phase
Phase
Phase
Phase
Phase
MCB
MCB
MCB
MCB
MCB
MCB
MCCB
MCCB
55 | P a g e
Protective Device - 3 Phase MCCB
Protective Device - 3 Phase MCCB
-
-
Unit
Unit
100A
125A
Protective Device - 3 Phase MCCB
Protective Device - 3 Phase MCCB
Final Connection to Equipment
-
Manufacturer
Unit
Unit
Model
-
-
160A
200A
Unit (e.g.,
single,
Length
metre)
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Connective
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
Device
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Switched Fuse Connection unit
Unswitched Fuse Connection unit
Single Phase Isolator
3 Phase Isolator
Single Phase Isolator
3 Phase Isolator
Single Phase Isolator
3 Phase Isolator
Single Phase Isolator
3 Phase Isolator
Single Phase Isolator
3 Phase Isolator
Single Phase Isolator
3 Phase Isolator
3 Phase Isolator
3 Phase Switch fuse
3 Phase Isolator
3 Phase Switch fuse
3 Phase Isolator
Size
10A
10A
16A
16A
20A
20A
32A
32A
40A
40A
50A
50A
63A
63A
80A
80A
100A
100A
125A
Cost
56 | P a g e
Connective
Connective
Connective
Connective
Connective
TOTALS
Device
Device
Device
Device
Device
–
–
–
–
–
3
3
3
3
3
Phase
Phase
Phase
Phase
Phase
Switch fuse
Isolator
Switch fuse
Isolator
Switch fuse
-
-
Unit
Unit
Unit
Unit
Unit
125A
160A
160A
200A
200A
57 | P a g e