Baxi Bermuda BBU 15 HE Release note

© Baxi Heating UK Ltd 2009
Baxi Bermuda BBU 15 HE
Condensing Back Boiler Unit
These Instructions must be read in conjunction with those for
the separate Valor Dimension electric firefront.
They include the Benchmark Commissioning Checklist
and should be left with the user for safe keeping.
Installation & Servicing Instructions

2© Baxi Heating UK Ltd 2009
Natural Gas
Baxi Bermuda BBU 15 HE
G.C.No. 44 075 09
For use with the following electric firefronts:
Valor Dimension Classica Brass, Pewter or Black BBU Firefront
Valor Dimension Dream Gold, Chrome or Black BBU Firefront
Valor Dimension Innova BBU Firefront
Valor Dimension Regalia BBU Firefront
Valor Dimension Nano Chrome BBU Firefront
Valor Dimension Lyrica BBU Firefront
Building Regulations and the Benchmark
Commissioning Checklist
Building Regulations (England & Wales) require notification of
the installation of a heating appliance to the relevant Local
Authority Building Control Department. From 1 April 2005 this
can be achieved via a Competent Persons Self Certification
Scheme as an option to notifying the Local Authority directly.
Similar arrangements will follow for Scotland and will apply in
Northern Ireland from 1 January 2006.
The Health & Safety Executive operates the ‘Gas Safe Register’,
a self-certification scheme for gas heating appliances.
These arrangements represent a change from the situation
whereby compliance with Building Regulations was accepted as
being demonstrated by completion of the Benchmark Logbook
(which was then left on site with the customer).
With the introduction of Self Certification Schemes, the
Benchmark Logbook is being withdrawn. However, a similar
document in the form of a commissioning checklist and service
interval record is incorporated at the back of these instructions.
This company is a member of the Benchmark initiative and fully
supports the aims of the programme. Its aim is to improve the
standards of installation and commissioning of central heating
systems in the UK and to encourage the regular servicing of all
central heating systems to ensure safety and efficiency.
Building Regulations require that installations should comply
with manufacturer's instructions. It is therefore important that
the commissioning checklist is completed by the installer. The
relevant section of Building Regulations only relates to
dwellings. Therefore the checklist only applies if the appliance is
being installed in a dwelling or some related structure.
The flowchart opposite gives guidance for installers on the
process necessary to ensure compliance with Building
Regulations.
0086
ISO 9001
FM 00866
This product has an energy rating (A) on a scale of A to G.
For more information see www.boilers.org.uk. This is a certification mark.
© Baxi Heating UK Ltd 2009 All rights reserved. No part of this publication may
be reproduced or transmitted in any form or by any means, or stored in any
retrieval system of any nature (including in any database), in each case whether
electronic, mechanical, recording or otherwise, without the prior written
permission of the copyright owner, except for permitted fair dealing under
Copyrights, Designs and Patents Act 1988.
Applications for the copyright owner’s permission to reproduce or make other
use of any part of this publication should be made, giving details of the proposed
use, to the following address:
The Company Secretary, Baxi Heating UK Ltd, The Wyvern Business Park,
Stanier Way, Derby, DE21 6BF.
Full acknowledgement of author and source must be given.
WARNING: Any person who does any unauthorised act in relation to a
copyright work may be liable to criminal prosecution and civil claims for damages.
The Benchmark Scheme
Benchmark places responsibilities on both manufacturers and installers. The
purpose is to ensure that customers are provided with the correct equipment for
their needs, that it is installed, commissioned and serviced in accordance with the
manufacturer’s instructions by competent persons and that it meets the
requirements of the appropriate Building Regulations. The Benchmark Checklist
can be used to demonstrate compliance with Building Regulations and should be
provided to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work
in accordance with the Benchmark Code of Practice which is available from the
Heating and Hotwater Industry Council who manage and promote the Scheme.
Visit www.centralheating.co.uk for more information.

Installer Notification Guidelines
3
© Baxi Heating UK Ltd 2009
Choose Building
Regulations Notification
Route
Contact your relevant Local
Authority Building Control
(LABC) who will arrange
an inspection or contact
a government approved
inspector
LABC will record the data
and will issue a
certificate of compliance
‘Gas Safe Register’ will issue a
Building Regulations Compliance
Certificate to the property owner
and inform the relevant LABC
You must ensure that the
certificate number issued by
the ‘Gas Safe Register’ is written
onto the Benchmark Checklist
Scheme Members only
Call ‘Gas Safe Register’ on:
0800 408 5577
or log onto:
www.GasSafeRegister.co.uk
within 10 days
If you notify via the ‘Gas Safe
Register’, the register will issue
the Building Regulations
certificate on members’ behalf
Complete the
Benchmark Checklist
Install and Commission this
appliance to manufacturer's
instructions
Competent Person's
Self Certification Scheme
Building Control
Complete the
Benchmark Checklist
Install and Commission this
appliance to manufacturer's
instructions

Legislation
4© Baxi Heating UK Ltd 2009
Codes of Practice, most recent version should be used
In GB the following Codes of Practice apply:
Standard Scope
BS 6891 Gas Installation.
BS 5546 Installation of hot water supplies for
domestic purposes.
BS 5449 Forced circulation hot water systems.
BS 6798 Installation of gas fired hot water boilers.
BS 5440 Part 1 Chimneys.
BS 5440 Part 2 Ventilation.
BS 7074 Expansion vessels and ancillary equipment for
sealed water systems.
BS 7593 Treatment of water in domestic hot water central
heating systems.
Also the following standard includes relevant information about
builders openings:
BS 5871 Part 1 Installation of gas fires, convector heaters,
fire/back boilers and heating stoves.
In IE the following Codes of Practice apply:
Standard Scope
I.S. 813 Domestic Gas Installations.
The following BS standards give valuable additional information;
BS 5546 Installation of hot water supplies for
domestic purposes.
BS 5449 Forced circulation hot water systems.
IMPORTANT - Installation, Commissioning, Service & Repair
This appliance must be installed in accordance with the manufacturer’s instructions and
the regulations in force. Read the instructions fully before installing or using the
appliance.
In GB, this must be carried out by a competent person as stated in the Gas Safety
(Installation & Use) Regulations.
Definition of competence: A person who works for a Gas Safe registered company
and holding current certificates in the relevant ACS modules, is deemed competent.
In IE, this must be carried out by a competent person as stated in I.S. 813 “Domestic
Gas Installations”.
The addition of anything that may interfere with the normal operation of the appliance
without express written permission from the manufacturer or his agent could invalidate
the appliance warranty. In GB this could also infringe the Gas Safety (Installation and
Use) Regulations.
Warning - Check the information on the data plate is compatible with local supply
conditions.
This company declare that no substances harmful to health
are contained in the appliance or used during appliance
manufacture.
The appliance is suitable only for installation in GB and IE and
should be installed in accordance with the rules in force, and
only used in a suitably ventilated location.
In GB, the installation must be carried out by a Gas Safe
Registered Installer. It must be carried out in accordance with
the relevant requirements of the:
• Gas Safety (Installation & Use) Regulations.
• The appropriate Building Regulations either The Building
Regulations, The Building Regulations (Scotland), Building
Regulations (Northern Ireland).
• The Water Fittings Regulations or Water Byelaws in
Scotland.
• The Current I.E.E. Wiring Regulations.
Where no specific instructions are given, reference should be
made to the relevant British Standard Code of Practice.
In IE, the installation must be carried out by a competent
Person and installed in accordance with the current edition of
I.S. 813 ‘Domestic Gas Installations’, the current Building
Regulations and reference should be made to the current ETCI
rules for electrical installation.
All systems must be thoroughly flushed and treated with
inhibitor (see section 6.2).
The boiler meets the requirements of Statutory Instrument “ The Boiler (Efficiency)
Regulations 1993 No3083” and is deemed to meet the requirements of Directive
92/42/EEC on the energy efficiency requirements for new hot water boilers fired with
liquid or gaseous fuels:-
Type test for purpose of Regulation 5 certified by:
Notified Body 0087.
Product/Production certified by:
Notified Bodies 0086.
For GB/IE only.
All Gas Safe registered engineers carry an ID card with their licence number and a
photograph. You can check your engineer is registered by telephoning
0800 408 5500 or online at www.GasSafeRegister.co.uk

Safe Manual Handling
5
© Baxi Heating UK Ltd 2009
General
The following advice should be adhered to, from when first handling the boiler to the final stages of installation, and also during maintenance.
Most injuries as a result of inappropriate handling and lifting are to the back, but all other parts of the body are vulnerable, particularly shoulders, arms and hands.
Health & Safety is the responsibility of EVERYONE.
There is no ‘safe’ limit for one man - each person has different capabilities. The boiler should be handled and lifted by TWO PEOPLE.
Do not handle or lift unless you feel physically able.
Wear appropriate Personal Protection Equipment e.g. protective gloves, safety footwear etc.
Preparation
Co-ordinate movements - know where, and when, you are both going.
Minimise the number of times needed to move the boiler - plan ahead.
Always ensure when handling or lifting the route is clear and unobstructed. If possible avoid steps, wet or slippery surfaces, unlit areas etc. and take special care
on ladders/into lofts.
Technique
When handling or lifting always use safe techniques - keep your back straight, bend your knees. Don’t twist - move your feet, avoid bending forwards and
sideways and keep the load as close to your body as possible.
Where possible transport the boiler using a sack truck or other suitable trolley.
Always grip the boiler firmly, and before lifting feel where the weight is concentrated to establish the centre of gravity, repositioning yourself as necessary. See the
‘Installation’ section of these instructions for recommended lift points.
Remember
The circumstances of each installation are different. Always asses the risks associated with handling and lifting according to the individual conditions.
If at any time when installing the boiler you feel that you may have injured yourself STOP !!
DO NOT ‘work through’ the pain - you may cause further injury.
IF IN ANY DOUBT DO NOT HANDLE OR LIFT THE BOILER - OBTAIN ADVICE OR ASSISTANCE BEFORE PROCEEDING !!
Working at Height
In order to reduce the number of fatalities and major accidents attributable to working at height, the Health and Safety Executive has introduced comprehensive
regulations and guidance that should be followed by all businesses working at height.
The following paragraphs consider some of the main features of the regulations and guidance. This is, however, only a limited summary and it is recommended
that all businesses planning on undertaking air source heat pump heating installations obtain a copy of the regulations and guidance issued by the Health and
Safety Executive and carefully consider the contents.
The regulations and guidance state that you are required to carry out a risk assessment for all work conducted at height and to put in place arrangements for:
• Eliminating or minimising risks from work at height.
• Safe systems of work for organising and performing work at height.
• Safe systems for selecting suitable work equipment.
• Safe systems for protecting people from the consequences of work at height.
The regulations and guidance highlight a hierarchy for safe work at height:
•Avoid the risk by not working at height if practicable.
•Prevent falls. Where it is not reasonably practicable to avoid work at height, you are required to take suitable and sufficient steps to prevent the risk of a fall
including selecting the most suitable work equipment (in accordance with the regulations).
•Mitigate the consequences of a fall; where the risk of a person or object falling still remains, take suitable and sufficient measures to minimise
the distance and consequences of any fall.
Collective protection measures, such as guard rails on scaffold, should be given priority over personal protection measures, such as safety harnesses.
Within the regulations’ framework, you are required to:
1) Assess the risk to help you decide how to work safely.
2) Follow the hierarchy for safe work at height (i.e. avoid, prevent and mitigate).
3) Plan and organise your work properly, taking account of weather conditions and the possibility of emergencies.
4) Make sure those working at height are competent.
5) Make use of appropriate work equipment.
6) Manage the risks from working on or around fragile surfaces and from falling objects.
7) Inspect and maintain the work equipment to be used and inspect the place where the work will be carried out for both access and egress.

6© Baxi Heating UK Ltd 2009
1.0 Introduction 7
2.0 General Layout 8
3.0 Technical Data 10
4.0 System Details 11
5.0 Site Requirements 15
6.0 Boiler Internal Wiring 20
7.0 Installation 21
8.0 Completion & Commissioning 25
9.0 Annual Servicing 27
10.0 Changing Components 29
11.0 Setting the Gas Valve 33
12.0 Fault Finding 34
13.0 Short Parts List 38
14.0 Notes 39
Benchmark Checklist 42
Section Page
Contents

1.0 Introduction
© Baxi Heating UK Ltd 2009
1.1 Description
1. The Baxi Bermuda BBU 15 HE is a central heating
boiler designed for installation within a builders opening
in the living space of a dwelling.
2. The boiler is a fully automatic gas fired condensing
boiler. It is room sealed and fan assisted.
3. The boiler output will automatically modulate
between:
Max Min
15kW 4.6kW
15.7kW (condensing) 4.83kW (condensing)
According to system load
4. It must be fitted in conjunction with one of the
available electric firefront units as listed on page 2.
The separate electric firefront is intended for hearth
mounting. All instructions, fixings etc. needed to fit the
firefront are included in the firefront pack.
5. These instructions relate to the central heating boiler
section of the appliance (Fig. 1).
6. The appliance is designed for use on NATURAL
GAS (G20) only.
7. It can be used on sealed or open vented systems.
It must NOT be fitted on any type of gravity system.
The boiler is suitable for fully pumped systems ONLY.
8. The boiler is fitted with an integral pump unit for the
removal of condensate.
9. The boiler data badge gives details of the model,
serial number and Gas Council number and is situated
on the front case panel.
10. The boiler is intended to be installed in a residential
environment on a governed meter supply only.
11. The boiler must be installed with one of the
MULTIIFIT vertical concentric Flexi Flue kits available:-
10m kit 720101701 or 12.5m kit 720102001.
12. All systems must be thoroughly flushed and
treated with inhibitor (see section 4.2).
1.2 Contents
1. The boiler pack contains:
• Boiler Unit
• Plumbing Kit
• Condensate Pipe & Elbow
• Fixings Kit
• Literature Pack
2. The flue pack contains:
• Terminal Cap
• Flue Duct Adaptor (inc. seal)
• Air Cowl
• Air Duct Collar (inc. 4 screws)
• Air Duct Clamp
• Closure Plate
• Boiler Concentric
Adaptor (inc. 2 seals)
• 10m or 12.5m of Concentric
Flexible Duct
• 2 x 60mm grey Seals
• 1 x 100mm red Seal
Fig. 1
7
Fig. 2

2.0 General Layout
8© Baxi Heating UK Ltd 2009
2.1 Layout (Fig. 3)
1. Automatic Air Vent
2. Flue Connection
3. Spark Generator
4. Spark & Sensing Electrodes
5. Heat Exchanger
6. Boiler Control Connector
7. Control Wiring Connector
8. Condensate Sump
9. Gas Cock
10. Condensate Pump
11. Fan
12. Drain
13. Return Connection
14. Air Sampling Point
15. Flue Sampling Point
16. Flow Connection
17. Condensate Outlet
18. PCB Control Box (shown removed for clarity)
19. Boiler Control (cover open)
The Boiler Control operates the boiler remotely. This is
supplied with the firefront and is fitted, in operation, to the
firefront spacer frame.
IMPORTANT: To commission the boiler it is is necessary
to remove the Boiler Control from the firefront
packaging and connect it to the boiler at the upper right
hand side (item 6).
1
2
3
4
5
6
7
8
9
10
11
12
13
17
16
15
14
18
Calibration Controls
Fig. 3
19
PCB Control Box
removed for clarity
PCB Control Box

9
© Baxi Heating UK Ltd 2009
2.0 General Layout
2.2 Flue Kit (10m & 12.5m) (Fig. 3a)
1. Terminal Cap
2. Flue Duct Adaptor
3. Air Cowl
4. Air Duct Collar
5. Air Duct Clamp
6. Closure Plate
7. Boiler Adaptor
8. 60mm Ø Seal
9. Collar Securing Screws x 4
10. 100mm Ø Seal
11. 60mm Ø Flue Duct
12. 100mm Ø Air Duct
13. ‘C’ Clip
1
2
3
4
5
6
7
8
9
10
8
11
12
Fig. 3a
13

10 © Baxi Heating UK Ltd 2009
Sedbuk Declaration For Bermuda
BBU 15 HE
The seasonal efficiency (SEDBUK) is 90.1%
This value is used in the UK Government’s
Standard Assessment Procedure (SAP) for energy
rating of dwellings. The test data from which it has
been calculated has been certified by 0087.
Appliance Category CAT I 2H
Inlet Pressure (Natural Gas - G20)
mbar 20
Injector (Natural Gas - G20)
420 (4.2 mm)
Appliance Type C33
3.0 Technical Data
3.1 Bermuda HE CBBU 15 HE
NOxClass 5 (31mg/kWh)
Heat Input (Net) Max Min
kW 15.4 5.0
Heat Input (Gross) Max Min
kW 17.1 5.7
Heat Output (Non-Condensing)
Max Min
kW 15.0 4.88
Heat Output (Condensing)
Max Min
kW 15.7 5.25
Gas Rate (Natural Gas - G20)
(After 10 mins)
Max Min
m3/h 1.63 0.54
Electrical Supply 230V~ 50Hz
(Appliance must be connected to an
earthed supply)
Boiler Power Consumption
112W
Boiler Electrical Protection
IPX0
Boiler External Fuse Rating 3A
Connections
Gas Supply - 15mm compression
Flow - 22mm male copper
Return - 22mm male copper
Weights
Packaged Boiler Carton 28 kg
Installation Lift Weight 27 kg
Flue Length Max Min
Metres 12.5 3.0
Dimensions
Casing Height - 538mm
Casing Width - 383mm
Casing Depth - 306mm
Boiler Set Temperature
Max Min
°C 75 25
Firefront
See the instructions supplied with the firefront for
all Technical Data