Baxi EcoBlue Plus Combi Quick Start Manual

Download

Page 1

EcoBlue Plus Combi

Installation and Service Manual

United Kingdom

Gas Fired Wall Mounted Condensing Combination Boiler

24 - 28 - 33

These instructions include the Benchmark Commissioning Checklist

and should be left with the user for safe keeping.

They must be read in conjunction with the Flue Installation Guide.

Page 2

Model Range

Baxi EcoBlue Plus 24 Combi

G.C.No 47-075-84

Baxi EcoBlue Plus 28 Combi

G.C.N

47-075-85

Baxi EcoBlue Plus 33 Combi

47-075-86

G.C.N

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. This can be achieved via a

Competent Persons Self Certification Scheme as an option to

notifying the Local Authority directly.

The Health & Safety Executive operates the ‘Gas Safe Register’, a self-

certification scheme for gas heating appliances.

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.

0086

The flowchart opposite gives guidance for installers on the process

necessary to ensure compliance with Building Regulations.

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

ISO 9001

FM 00866

© Baxi Heating UK Ltd 2014 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:

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.

The Company Secretary, Baxi Heating UK Limited, Brooks House, Coventry Road, Warwick. CV34 4LL

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.

You have just purchased one of our appliances and we thank you for the trust you have placed in our products. Please note that the product will provide good service for a longer period of time if it is regularly checked and maintained. Our customer support network is at your disposal at all times.

2 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 3

Installer Notification Guidelines

Choose Building

Regulations Notification

Route

Competent Person's

Self Certification Scheme

Install and Commission this appliance to manufacturer's

instructions

Complete the

Benchmark Checklist

If you notify via the ‘Gas Safe

the Building Regulations

certificate on members’ behalf

Building Control

Contact your relevant Local

Authority Building Control

(LABC) who will arrange

an inspection or contact a government approved

inspector

Install and Commission this appliance to manufacturer's

instructions

Scheme Members only

Call ‘Gas Safe Register’ on:

0800 408 5577

or log onto:

www.gassaferegister.co.uk

within 10 days

You must ensure that the

certificate number issued by

the ‘Gas Safe Register’ is written

onto the Benchmark Checklist

‘Gas Safe Register’ will issue a

Building Regulations Compliance

Certificate to the property owner

and inform the relevant LABC

Complete the

Benchmark Checklist

LABC will record the data

and will issue a

certificate of compliance

7212136 - 02 (08/14) EcoBlue Plus Combi 3

Page 4

Contents

1 Introduction

1.1 General

1.2 Additional Documentation

1.3 Symbols Used

1.4 Abbreviations

1.5 Extent of Liabilities

1.5.1 Manufacturer’s Liability

1.5.2 Installer’s Responsibility

1.6 Homologations

1.6.1 CE Marking

1.6.2 Standards

2 Safety

2.1 General Safety Instructions

2.2 Recommendations

2.3 Specific Safety Instructions

2.3.1 Handling

3 Technical Specifications

3.1 Technical Data

3.2 Dimensions and Connections

3.3 Electrical Diagram

4 Description of the Product

4.1 General Description

4.2 Operating Principle

4.2.1 Central Heating Mode

4.2.2 Domestic Hot Water Mode

4.2.3 Boiler Frost Protection Mode

4.2.4 Pump Protection

4.3 Main Components

4.4 Control Panel Description

4.5 Standard Delivery

4.6 Accessories & Options

4.6.1 Optional Extras

8 8 9

9 10 10

11 11 11

13 13 14 14

15 17 18

19 20 20 20 20 20 21 22 23 23 23

5 Before Installation

5.1 Installation Regulations

5.2 Installation Requirements

5.2.1 Gas Supply

5.2.2 Electrical Supply

5.2.3 Hard Water Areas

5.2.4 Bypass

5.2.5 System Control

5.2.6 Treatment of Water Circulating Systems

5.2.7 Showers

5.2.8 Expansion Vessel (CH only)

5.2.9 Safety Pressure Relief Valve

5.3 Choice of the Location

5.3.1 Location of the Appliance

5.3.2 Data Plate

5.3.3 Bath & Shower Rooms

5.3.4 Ventilation

5.3.5 Condensate Drain

5.3.6 Clearances

5.3.7 Flue/Chimney Location

5.3.8 Horizontal Flue/Chimney Systems

4 EcoBlue Plus Combi 7212136 - 02 (08/14)

24 25 25 25 25 25 25 26 26 26 27 28 28 28 28 28 29 31 32 34

Page 5

Contents

5.3.9 Flue/Chimney Lengths

5.3.10 Flue/Chimney Trim

5.3.11 Terminal Guard

5.3.12 Flue/Chimney Deflector

5.3.13 Flue/Chimney Accessories

5.4 Transport

5.5 Unpacking & Initial Preparation

5.5.1 Unpacking

5.5.2 Initial Preparation

5.5.3 Flushing

5.6 Connecting Diagrams

5.6.1 System Filling and Pressurising

5.6.2 Domestic Hot Water Circuit

6 Installation

6.1 General

6.2 Assembly

6.2.1 Fitting the Pressure Relief Discharge Pipe

6.2.2 Connecting the Condensate Drain

6.3 Preparation

6.3.1 Panel Removal

6.4 Air Supply / Flue Gas Connections

6.4.1 Connecting the Flue/Chimney

6.5 Electrical Connections

6.5.1 Electrical Connections of the Appliance

6.5.2 Connecting External Devices

6.6 Filling the Installation

6.7 External Controls

6.7.1 Installation of External Sensors

6.7.2 Optional Outdoor Sensor

35 35 35 35 35 35 36 36 36 36 37 37 37

38 38 38 39 39 39 40 40 42 42 42 42 43 43 43

7 Commissioning

7.1 General

7.2 Checklist before Commissioning

7.2.1 Preliminary Electrical Checks

7.2.2 Checks

7.3 Commissioning Procedure

7.3.1 De-Aeration Function

7.4 Gas Settings

7.4.1 Check Combustion - ‘Chimney Sweep’ Mode

7.5 Configuring the System

7.5.1 Check the Operational (Working Gas Inlet Pressure & Gas Rate)

7.6 Final Instructions

7.6.1 Handover

7.6.2 System Draining

8 Operation

8.1 General

8.2 To Start-Up

8.3 To Shutdown

8.4 Use of the Control Panel

8.5 Frost Protection

9 Settings

9.1 Parameters

44 44 44 44 45 45 45 45 47 47 47 47 48

49 49 49 50 50

51 51

7212136 - 02 (08/14) EcoBlue Plus Combi 5

Page 6

Contents

10 Maintenance

10.1 General & Service Message

10.2 Standard Inspection & Maintenance Operation

10.3 Specific Maintenance Operations Changing Components

10.3.1 Spark Ignition & Flame Sensing Electrodes

10.3.2 Fan

10.3.3 Air / Gas Venturi

10.3.4 Burner

10.3.5 Insulation

10.3.6 Flue Sensor

10.3.7 Igniter

10.3.8 Heating Flow & Return Sensors

10.3.9 Safety Thermostat

10.3.10 DHW NTC Sensor

10.3.11 Pump - Head Only

10.3.12 Pump - Complete

10.3.13 Automatic Air Vent

10.3.14 Safety Pressure Relief Valve

10.3.15 Heating Pressure Gauge

10.3.16 Plate Heat Exchanger

10.3.17 Hydraulic Pressure Sensor

10.3.18 DHW Flow Regulator & Filter

10.3.19 DHW Flow Sensor (‘Hall Effect’ Sensor)

10.3.20 Diverter Valve Motor

10.3.21 Main P.C.B.

10.3.22 Boiler Control P.C.B.

10.3.23 Expansion Vessel

10.3.24 Gas Valve

10.3.25 Setting the Gas Valve (CO

Check)

52 53 54 54 55 55 56 56 57 57 57 57 57 58 58 58 59 59 60 60 61 61 61 62 62 63 63 64

11 Troubleshooting

11.1 Error Codes

11.2 Fault Finding

12 Decommissioning Procedure

12.1 Decommissioning Procedure

13 Spare Parts

13.1 General

13.2 Spare Parts List

14 Notes

15 Benchmark Commissioning Checklist

65 65

72 72

6 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 7

7212136 - 02 (08/14) EcoBlue Plus Combi 7

Page 8

1 Introduction

1.1 General

WARNING

Installation, repair and maintenance must only be carried out only by a competent person. This document is intended for use by competent persons.

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

This appliance must be installed in accordance with the manufacturer’s instructions and the regulations in force. If the appliance is sold or transferred, or if the owner moves leaving the appliance behind you should ensure that the manual is kept with the appliance for consultation by the new owner and their installer. 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 (as may be amended from time to time). 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.

The appliance is designed as a boiler for use in residential domestic environments on a governed meter supply only. The selection of this boiler is entirely at the owner’s risk. If the appliance is used for purposes other than or in excess of these specifications, the manufacturer will not accept any liability for resulting loss, damage or injury.

The manufacturer will not accept any liability whatsoever for loss, damage or injury arising as a result of failure to observe the instructions for use, maintenance and installation of the appliance.

WARNING

Check the information on the data plate is compatible with local supply conditions.

1.2 Additional Documentation

These Installation & Service Instructions must be read in conjunction with the Flue Installation Guide supplied in the Literature Pack.

Various timers, external controls, etc. are available as optional extras. Full details are contained in the relevant sales literature.

8 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 9

Introduction 1

1.3 Symbols Used

In these instructions, various levels are employed to draw the user's attention to particular information. In so doing, we wish to safeguard the user's safety, prevent hazards and guarantee correct operation of the appliance. Each level is accompanied by a warning triangle

DANGER

Risk of a dangerous situation causing serious physical injury.

WARNING

Risk of a dangerous situation causing slight physical injury.

CAUTION

Risk of material damage.

Signals important information .

Signals a referral to other instructions or other pages in the instructions.

1.4 Abbreviations

DHW: Domestic hot water

CH: Central heating

GB: Great Britain

IE: Ireland

BS: British standard

HHIC: Heating and Hotwater Industry Council

7212136 - 02 (08/14) EcoBlue Plus Combi 9

Page 10

1 Introduction

1.5 Extent of Liabilities

1.5.1 Manufacturer's Liability

Our products are manufactured in compliance with the requirements of the various european applicable Directives. They are therefore delivered with marking and all relevant documentation. In the interest of customers, we are continuously endeavouring to make improvements in product quality. All the specifications stated in this document are therefore subject to change without notice.

The manufacturer will not accept any liability for loss, damage or injury arising as a result of:-

Failure to abide by the instructions on using the appliance. Failure to regularly maintain the appliance, or faulty or inadequate maintenance of the appliance. Failure to abide by the instructions on installing the appliance.

This company declares 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 current and relevant requirements of legislation and guidance including 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.

Prior to commissioning all systems must be thoroughly flushed and treated with inhibitor (see section 5.2.6). Failure to do so will invalidate the appliance warranty.

Incorrect installation could invalidate the warranty and may lead to prosecution.

10 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 11

Introduction 1

1.5.2 Installer's Responsibility

The installer is responsible for the installation and initial start up of the appliance. The installer must adhere to the following instructions:

Read and follow the instructions given in the manuals provided with the appliance. Carry out installation in compliance with the prevailing legislation and standards. Ensure the system is flushed and inhibitor added. Install the flue/chimney system correctly ensuring it is operational and complies with prevailing legislation and standards, regardless of location of the boiler’s installation. Only the installer should perform the initial start up and carry out any checks necessary. Explain the installation to the user. Complete the Benchmark Commissioning Checklist - this is a condition of the warranty ! Warn the user of the obligation to check the appliance and maintain it in good working order. Give all the instruction manuals to the user.

1.6 Homologations

1.6.1 CE Marking

EC - Declaration of Conformity

Baxi Heating UK Limited being the manufacturer / distributor within the European Economic Area of the following

Baxi EcoBlue Plus 24 - 28 - 33 Combi

declare that the above is in conformity with the provisions of the Council Directive

2009/142/EC 92/42/EEC 2004/108/EC 2006/95/EC

and has been subject to the following conformity procedures laid down in

Annex 2 - Article 3 of 2009/142/EC

under the supervision of the British Standards Institution, a Notified Body authorized by the United Kingdom Competent Authority, and carrying the Notified Body Number 0086.

Type test for purpose of Regulation 5 certified by: Notified Body 0085.

Product/Production certified by: Notified Body 0086.

For GB/IE only.

7212136 - 02 (08/14) EcoBlue Plus Combi 11

Page 12

1 Introduction

1.6.2 Standards

Codes of Practice - refer to the most recent version

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 EN 12828 Heating systems in buildings. BS EN 12831 Heating systems in buildings - Calculation of

load. BS EN 14336 Installation & commissioning of water based

heating systems. BS 6798 Installation of gas fired hot water boilers. BS 5440 Part 1 Flues. 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. BS 4814 Specification for Expansion Vessels using an

internal diaphragm, for sealed hot water

systems. IGE/UP/7/1998 Guide for gas installations in timber framed

housing.

In IE the following Codes of Practice apply: Standard Scope I.S. 813 Domestic Gas Installations. The following standards give valuable additional information; BS 5546 Installation of hot water supplies for domestic

purposes. BS EN 12828 Heating systems in buildings. BS EN 12831 Heating systems in buildings - Calculation of

load. BS EN 14336 Installation & commissioning of water based

heating systems. BS 7074 Expansion vessels and ancillary equipment for

sealed water systems. BS 7593 Treatment of water in domestic hot water

central heating systems.

12 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 13

2 Safety

Safety 2

2.1 General Safety Instructions

DANGER

If you smell gas:

1. Turn off the gas supply at the meter

2. Open windows and doors in the hazardous area

3. Do not operate light switches

4. Do not operate any electrical equipment

5. Do not use a telephone in the hazardous area

6. Extinguish any naked flame and do not smoke

7. Warn any other occupants and vacate the premises

8. Telephone the National Gas Emergency Service on:- 0800 111 999

2.2 Recommendations

WARNING

Installation, repair and maintenance must be carried out by a Gas Safe Registered Engineer (in accordance with prevailing local and national regulations).

When working on the boiler, always disconnect the boiler from the mains and close the main gas inlet valve.

After maintenance or repair work, check the installation to ensure that there are no leaks.

CAUTION

The boiler should be protected from frost.

Only remove the casing for maintenance and repair operations. Replace the casing after maintenance and repair operations.

7212136 - 02 (08/14) EcoBlue Plus Combi 13

Page 14

2 Safety

2.3 Specific Safety Instructions

2.3.1 Handling

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 assess 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 !

14 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 15

3 Technical Specifications

Technical Specifications 3

3.1 Technical Data

Appliance Type C

13 C33 C53

Appliance Category CAT I

Heat Input CH (Net) Max Min 24 model kW 20 4.7 28 model kW 24 5.7 33 model kW 28 6.8

Heat Output CH (Non-Condensing) Max Min 24 model kW 20 4.6 28 model kW 24 5.5 33 model kW 28 6.6

Heat Output CH (Condensing) Max Min 24 model kW 21.2 4.9 28 model kW 25.3 6.0 33 model kW 29.6 7.1

Heat Input DHW (Net) Max 24 model kW 24.7 28 model kW 28.9 33 model kW 34

Heat Output DHW Max 24 model kW 24 28 model kW 28 33 model kW 33

Gas Nozzle Injector 24 model mm Ø 5.0 28 model mm Ø 5.6 33 model mm Ø 6.6

NOxClass 5

NOTE: All data in this section are nominal

values and subject to normal production tolerances.

Electrical Supply 230V~ 50Hz

(Appliance must be connected to an earthed supply)

Power Consumption 24 model W 123 28 model W 132 33 model W 135

Electrical Protection IPX5D (without integral timer) IP20 (with integral timer)

External Fuse Rating 3A

Internal Fuse Rating F2L

Condensate Drain

To accept 21.5mm (3/4in) plastic waste pipe

Flue Terminal Diameter 100mm Dimensions Projection 125mm

Connections copper tails

Gas Inlet - 22mm Heating Flow - 22mm Heating Return - 22mm Cold Water Inlet - 15mm Hot Water Outlet - 15mm Pressure Relief Discharge - 15mm

Outercase Dimensions

Casing Height - 700mm Overall Height Inc Flue Elbow - 860mm Casing Width - 390mm Casing Depth - 295mm

Clearances

Above Casing 175 mm Min Below Casing 150 mm* Min Front 450 mm Min (For Servicing) Front 5 mm Min (In Operation) L.H. Side 5 mm Min R.H. Side 5 mm Min

*This is MINIMUM recommended dimension. Greater clearance will aid installation and maintenance.

Weights

(24 model) Packaged Boiler Carton 39.2kg Installation Lift Weight 34kg

(28 model) Packaged Boiler Carton 39.2kg Installation Lift Weight 34kg

(33 model) Packaged Boiler Carton 41.2kg Installation Lift Weight 36kg

Central Heating Primary Circuit Pressures

bar Safety Discharge 3 Max Operating 2.5 Min Operating 0.5 Recommended Operating Range 1-2

DHW Circuit bar Pressures Max Operating 8 Min Operating 0.15

Flow Rates (24) (28) (33)

l/min l/min l/min DHW Flow Rate @ 30o C Rise 10.9 12.9 15.3

DHW Flow Rate @ 35o C Rise 9.8 11.5 13.5

IMPORTANT

Min Working DHW Flow Rate 2 2 2

Where Low Flow Taps or Fittings are intended to be used in the DHW system connected to a Baxi EcoBlue Combi it is strongly recommended that the DHW flow rate DOES NOT fall below 2.5 l/min. This will ensure reliable operation of the DHW function.

Expansion Vessel - (For Central Heating only. Integral with appliance) bar Min Pre-charge Pressure 1.0

litre Max Capacity of CH System 100

Primary Water Content of Boiler (unpressurised) 2.5

Temperatures

C.H. Flow Temp (adjustable)

25°C to 80°C max (± 5°C)

D.H.W. Flow Temp (adjustable)

40°C to 60°C max (± 5°C)

dependent upon flow rate

7212136 - 02 (08/14) EcoBlue Plus Combi 15

Page 16

3 Technical Specifications

3.1 Technical Data (cont)

Pump

Available Head See graph below

Pump - Available Head

5.5

4.5

3.5

2.5

Metre (wg)

1.5

0.5

200 400 600 800 1000 1200

Flow Rate (l/h)

SEDBUK Declaration

SAP 2005 Seasonal Efficiency is

91.1%

SAP 2009 Annual Efficiency is

89%

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 0085.

NATURAL GAS ONLY !

Max Gas Rate (Natural Gas - G20)

(After 10 mins) 24 model m3/h 2.61 28 model m3/h 3.05 33 model m3/h 3.59

Dynamic (nominal) Inlet Pressure

(Natural Gas - G20)

mbar 20 with a CV of 37.78 MJ/m

NOTE: All data in this section are nominal values and subject to normal production tolerances.

16 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 17

Pressure

Relief Valve

(15mm)

Condensate

Drain

38.5mm

26.5 mm

65 mm 65 m m 65 mm 65 m m 65 mm

162.5mm (PRV)

Hot Water

Outlet

(15mm)

Cold Water

Inlet

(15mm)

Heating

Return

(22mm)

Heating

Flow

(22mm)

Gas Inlet

(22mm)

There must be no part of the air duct (white tube) visible outside the property.

Technical Specifications 3

3.2 Dimensions and Connections

Dimensions

At least 1.5°

A 700mm

B 295mm

C 390mm

D 116mm Ø Min.

E 160mm (207mm for 80/125mm flue systems)

F 130mm

360° Orientation

G 106mm

H 228mm

J 162mm

Flue Ø 100mm

Tap Rail

7212136 - 02 (08/14) EcoBlue Plus Combi 17

Page 18

3 Technical Specifications

Low Voltage

External Control

Connection

3.3 Electrical Diagram

Boiler

Controls

g/y

Sensor

Mains Voltage

Connection

Link

g/y

Mains Input Cable

Hall Effect

Sensor

Flue

Heating

Return Sensor

Heating

Flow

Sensor

Hydraulic Pressure Switch

X42X41X40

X23X22

Diverter Valve Motor

g/y

Pump

Igniter

Spark

Ignition

Electrode

Flame Sensing Electrode

g/y

X20 X21 X30

X50

X10 X11 X12 X13 X14

Fan

DHW

NTC

Sensor

X60

X1 X2

Safety Thermostat

Gas

Valve

Timer Connector

2345

Timer Bridge

Key To Wiring Colours

b - Blue

r - Red

bk - Black

br - Brown

w - White

gr - Grey

18 EcoBlue Plus Combi 7212136 - 02 (08/14)

g - Green

g/y - Green/Yellow

y - Yellow

p - Purple

Page 19

4 Description of the Product

Information Label

Description of the Product 4

4.1 General Description

1. The Baxi EcoBlue Plus Combi boilers are fully automatic gas fired wall mounted condensing combination boilers. They are room sealed and fan assisted, and will serve central heating and mains fed domestic hot water.

2. The boiler is set to give a maximum output of :-

24 model - 24 kW DHW

21.2 kW CH (Condensing)

28 model - 28 kW DHW

25.3 kW CH (Condensing)

33 model - 33 kW DHW

29.6 kW CH (Condensing)

3. The boiler is factory set for use on Natural Gas (G20).

4. The boiler is suitable for use only on fully pumped sealed heating systems. Priority is given to domestic hot water.

Boiler Control Flap

Fig. 1

5. The boiler data badge gives details of the model, serial number and Gas Council number and is situated on the boiler lower panel. It is visible when the control box is lowered (Fig. 2).

6. The boiler model, serial number and Gas Council number are also shown on the information label behind the boiler control flap (Fig. 1). This is for user reference.

7. The boiler is intended to be installed in residential/domestic environments on a governed meter supply only.

8. The boiler must be installed with one of the purpose designed flues such as one of the standard horizontal telescopic flue kits detailed in the Flue Installation Guide .

All systems must be thoroughly cleansed, flushed and treated with inhibitor (see section 5.2.6).

These Installation & Servicing Instructions MUST be read in conjunction with the Flue Installation Guide supplied in the Literature Pack.

Data Badge

Fig. 2

Control Box removed for clarity

7212136 - 02 (08/14) EcoBlue Plus Combi 19

Page 20

4 Description of the Product

Boiler Schematic Layout

Key

1. Pump with Automatic Air Vent

2. Diverter Valve Assembly

3. Diverter Valve motor

4. CH System Pressure Gauge

5. Central Heating Filter

6. Domestic Hot Water Filter

7. Domestic Hot Water Priority Sensor (‘Hall Effect’ Sensor)

8. Domestic Hot Water NTC sensor

9. Non-return Valve

10. Hydraulic Pressure Sensor

11. Boiler Drain Tap

12. Safety Pressure Relief Valve

13. Plate Heat Exchanger

Connections:A – Condensate Drain B – Heating Flow C – Domestic Hot Water Outlet D – Gas Inlet E – Cold Water Inlet On/Off Valve and filter F – Heating Return

14. Condensate Trap

15. Gas Valve

16. Safety Thermostat (105°C)

17. Heating Flow Sensor

18. Flue Sensor

19. Boiler Adaptor

20. Primary Heat Exchanger

21. Spark Ignition Electrode

22. Burner

23. Flame Sensing Electrode

24. Air/Gas Collector

25. Return Heating Sensor

26. Fan

27. Air/Gas Venturi

28. Expansion Vessel

4.2 Operating Principle

The boiler can be set in 3 operating modes:- ‘Summer’

(DHW only), ‘Winter’ (CH & DHW) or ‘Heating Only’ (CH only) by use of the button.

4.2.1 Central Heating Mode

1. With a demand for heating, the pump circulates water through the primary circuit.

2. Once the burner ignites the fan speed controls the gas rate to maintain the heating temperature measured by the temperature sensor.

3. When the flow temperature exceeds the setting temperature, a 3 minute delay occurs before the burner relights automatically (anti-cycling). The pump continues to run during this period.

4. When the demand is satisfied the burner is extinguished and the pump continues to run for a period of 3 minutes (pump overrun).

4.2.2 Domestic Hot Water Mode

1. Priority is given to the domestic hot water supply. A demand at a tap or shower will override any central heating requirement.

2. The flow of water will operate the DHW Sensor (Hall Effect Sensor) which requests the 3 way valve to change position. This will allow the pump to circulate the primary water through the

DHW plate heat exchanger.

3. The burner will light automatically and the temperature of the domestic hot water is controlled by the temperature sensor.

4. When the domestic hot water demand ceases the burner will extinguish and the diverter valve will remain in the domestic hot water mode, unless there is a demand for central heating.

4.2.3 Boiler Frost Protection Mode

1. The frost protection mode is integral to the appliance and functions as long as there is power to the boiler, as indicated by the standby signal .

2. With CH & DHW or CH only selected, when the boiler temperature falls below 5°C the boiler will fire until a temperature of 30°C is reached.

3. If DHW only is selected, when the boiler CH temperature falls below 5°C the boiler will fire until a temperature of 30°C is reached. When the boiler DHW temperature falls below 5°C the boiler will fire until a temperature of 7°C is reached.

4. Further protection can be incorporated by using a system frost thermostat.

4.2.4 Pump Protection

1. This activates once a week if there has been no demand. The pump runs for 30 seconds to prevent sticking.

20 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 21

EV1

EV2

P. OUT

1 2 3 4

VENT

ADJ.

Description of the Product 4

4.3 Main Components

1. Expansion Vessel

2. Boiler Adaptor

3. Primary Heat Exchanger

4. Plate Heat Exchanger

5. Pump with Automatic Air Vent

6. Central Heating System Pressure Gauge

7. Fan Assembly with Venturi

8. Expansion Vessel Locating Stud

9. Flame Sensing Electrode

10. Air/Gas Collector

11. Spark Ignition Electrode

12. Combustion Box Cover & Burner

13. Control Box Display

14. Condensate Trap

15. Safety Pressure Relief Valve

16. Gas Valve

17. Diverter Valve Motor

18. Boiler Controls

19. Boiler Control Box

20. Boiler Drain Tap

21. Heating Flow Sensor

22. Safety Thermostat

23. Igniter

24. Access Panel for Timer Connector

RQRQADJ.

P. OUT

VENT

EV2

1 2 3 4

EV1

7212136 - 02 (08/14) EcoBlue Plus Combi

Page 22

4 Description of the Product

4.4 Control Panel Description

Key to Controls

Boiler Information View

Domestic Hot Water (DHW)

Temperature Adjustment

Summer - Winter - Heating Only

Standby - Reset - Esc

Central Heating (CH)

Temperature Adjustment

Mode

Standby - Reset - Esc Button

Boiler Information View Button

Increase CH Temperature Button

Decrease CH Temperature Button

Increase DHW Temperature Button

Decrease DHW Temperature Button

Summer / Winter / Only Heating Mode Button

Summer - DHW only mode

Winter - DHW & CH mode

Heating Only - Only CH mode

Display showing all available characters

Display Description

DHW and CH OFF (frost protection still enabled)

Indicate errors that prevent burner from igniting

Error - Not resettable by user

Water pressure too low

Indicates an error resettable by the user

Indicates navigation in programming mode (parameter)

Indicates navigation in programming mode

Generic error

Burner lit

DHW mode (symbol will flash with demand)

Heating mode (symbol will flash with demand)

Units for temperature

Units for pressure

Service due

22 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 23

Description of the Product 4

4.5 Standard Delivery

1. The pack contains:

Boiler Wall mounting plate (pre-plumbing jig) including isolation valves Fittings pack Literature pack

• Installation & Servicing Manual

(including ‘Benchmark’)

• User Guide

• Flue Accessories & Fitting Guide

• Service Contract Leaflet

• Registration Card

• Envelope

• Fernox Leaflet

• Wall Template

4.6 Accessories & Options

4.6.1 Optional Extras

1. Various timers, external controls, etc. are available as optional extras.

Plug-in Mechanical Timer Kit ----------------------------------------- 7212341

Plug-in Digital Timer Kit ------------------------------------------------ 7212342

Wireless RF Mechanical Thermostat Kit ---------------------------7212343

Wireless RF Digital Programmable Room Thermostat Kit ---- 7212344

Single Channel Wired Programmable Room Thermostat Kit -7212438

Wired Outdoor Weather Sensor ------------------------------------- 7213356

Two Channel Wired Programmer Kit ------------------------------- 7212443

Single Channel Wired Programmer Kit ---------------------------- 7212444

Mechanical Room Thermostat -------------------------------------- 7209716

Flue Accessories (elbows, extensions, clamps etc.)

(refer to the Flue Accessories & Fitting Guide supplied in the literature

pack.)

Remote relief valve kit ------------------------------------------------- 512139

Boiler discharge pump ------------------------------------------------- 720648301

1M Drain Pipe ‘Trace Heating’ Element --------------------------- 720644401

2M Drain Pipe ‘Trace Heating’ Element --------------------------- 720664101

3M Drain Pipe ‘Trace Heating’ Element --------------------------- 720664201

5M Drain Pipe ‘Trace Heating’ Element --------------------------- 720664401*

*Where the drain is between 3 & 5 metres a 5 metre kit can be used and

“doubled back” upon itself.

Any of the above MUST be fitted ONLY by a qualified competent person. Further detail can be found in the relevant sales literature and at www.baxi.co.uk

7212136 - 02 (08/14) EcoBlue Plus Combi 23

Page 24

5 Before Installation

5.1 Installation Regulations

WARNING

Installation, repair and maintenance must only be carried out only by a competent person. This document is intended for use by competent persons,

Installation must be carried out in accordance with the prevailing regulations, the codes of practice and the recommendations in these instructions. Please refer to 1.5.1 and 1.6.2

Installation must also respect this instruction manual and any other applicable documentation supplied with the boiler.

24 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 25

Before Installation 5

5.2 Installation Requirements

5.2.1 Gas Supply

1. The gas installation should be in accordance with the relevant standards. In GB this is BS 6891 (NG). In IE this is the current edition of I.S. 813 “Domestic Gas Installations”.

2. The connection to the appliance is a 22mm copper tail located at the rear of the gas service cock (Fig. 3).

3. Ensure that the pipework from the meter to the appliance is of adequate size, and the demands of any other gas appliances in the property are taken into consideration. It is strongly recommended that pipe of at least 22mm diameter is used.

4. The gas service cock incorporates a pressure test point. The service cock must be on to check the pressure.

5.2.2 Electrical Supply

Fig. 3

Gas Service Cock

1. External wiring must be correctly earthed, polarised and in accordance with relevant regulations/rules. In GB this is the current I.E.E. Wiring Regulations. In IE reference should be made to the current edition of ETCI rules.

2. The mains supply is 230V ~ 50Hz fused at 3A.

The method of connection to the electricity supply must facilitate complete electrical isolation of the appliance.

Connection may be via a fused double-pole isolator with a contact separation of at least 3mm in all poles and servicing the boiler and system controls only.

5.2.3 Hard Water Areas

Only water that has NOT been artificially softened must be used when filling or re-pressurising the primary system. If the mains cold water to the property is fitted with an artificial softening/treatment device the source utilised to fill or re-pressurise the system must be upstream of such a device.

5.2.4 Bypass

1. The boiler is fitted with an automatic integral bypass.

5.2.5 System Control

1. Further external controls (e.g. room thermostat sensors) MUST be fitted to optimise the economical operation of the boiler in accordance with Part L of the Building Regulations. A range of optional controls is available. Full details are contained in the relevant Sales Literature.

7212136 - 02 (08/14) EcoBlue Plus Combi 25

Page 26

5 Before Installation

5.2.6 Treatment of Water Circulating Systems

1. All recirculatory water systems will be subject to corrosion unless they are flushed and an appropriate water treatment is applied. To prevent this, follow the guidelines given in BS 7593 “Treatment of Water in Domestic Hot Water Central Heating Systems” and the treatment manufacturers instructions.

2. Treatment must involve the use of a proprietary cleanser, such as Sentinel X300 or X400, or Fernox F3 and an inhibitor such as Sentinel X100 or Fernox MB-1.

3. Full instructions are supplied with the products. For further information contact Sentinel (0800 389 4670) or Fernox (0870 870 0362).

Failure to flush and add inhibitor to the system will invalidate the appliance warranty.

4. It is important to check the inhibitor concentration after installation, system modification and at every service in accordance with the inhibitor manufacturer’s instructions. (Test kits are available from inhibitor stockists.)

5. Complete the label supplied with the inhibitor and attach to the inside of the boiler case. Detail of system treatment should be added for future reference.

6. For information or advice regarding any of the above contact Technical Enquiries 0844 871 1555.

5.2.7 Showers

1. If a shower control is supplied from the appliance it should be of the thermostatic or pressure balanced type. Thermostatic type shower valves provide the best comfort and guard against water at too high a temperature. Existing controls may not be suitable - refer to the shower valve manufacturer.

5.2.8 Expansion Vessel (CH only)

1. The appliance expansion vessel is pre-charged to 1.0 bar. Therefore, the minimum cold fill pressure is 1.0 bar. The vessel is suitable for correct operation for system capacities up to 100 litres. For greater system capacities an additional expansion vessel must be fitted. For GB refer to BS 7074 Pt 1. For IE, the current edition of I.S. 813 “Domestic Gas Installations”.

2. Checking the charge pressure of the vessel - to check the charge accurately ensure the system is cold. It is also necessary to relieve the pressure by draining the boiler. Using a suitable gauge check the pressure at the valve on the underside of the vessel. Adjust the pressure as required and repressurise the system.

26 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 27

Before Installation 5

5.2.9 Safety Pressure Relief Valve

See B.S. 6798 for full details.

1. The pressure relief valve (Fig. 5) is set at 3 bar, therefore all pipework, fittings, etc. should be suitable for pressures in excess of 3 bar and temperature in excess of 100°C.

2. The pressure relief discharge pipe should be not less than 15mm diameter, run continuously downward, and discharge outside the building, preferably over a drain. It should be routed in such a manner that no hazard occurs to occupants or causes damage to wiring or electrical components. The end of the pipe should terminate facing down and towards the wall (Fig. 4).

3. The discharge must not be above a window, entrance or other public access. Consideration must be given to the possibility that boiling water/steam could discharge from the pipe.

The relief valve must never be used to drain the system

The end of the pipe should terminate facing

down and towards the wall

Fig. 4

4. A remote relief valve kit is available to enable the boiler to be installed in cellars or similar locations below outside ground level.

5. A boiler discharge pump is available which will dispose of both condensate & high temperature water from the relief valve. It has a maximum head of 5 metres.

Section 6.2.1 gives details of how to connect the pipe

to the boiler.

Control Box removed for clarity

Discharge Pipe

Pressure Relief Valve

7212136 - 02 (08/14) EcoBlue Plus Combi 27

Fig.5

Page 28

5 Before Installation

Fig. 6

Data Badge

Zone 2

Zone 1

Window Recess

Zone 2

5.3 Choice of the Location

5.3.1 Location of the Appliance

1. The boiler may be fitted to any suitable wall with the flue passing through an outside wall or roof and discharging to atmosphere in a position permitting satisfactory removal of combustion products and providing an adequate air supply. The boiler should be fitted within the building unless otherwise protected by a suitable enclosure i.e. garage or outhouse. (The boiler may be fitted inside a cupboard-see Section 5.3.4).

2. Where the boiler is sited in an unheated enclosure and during periods when the heating system is to be unused it is recommended that the permanent live is left on to give BOILER frost protection. NOTE: THIS WILL NOT PROTECT THE SYSTEM !

3. If the boiler is fitted in a room containing a bath or shower reference must be made to the relevant requirements. In GB this is the current I.E.E. Wiring Regulations and Building Regulations. In IE reference should be made to the current edition of I.S. 813 “Domestic Gas Installations” and the current ETCI rules.

4. If the boiler is to be fitted into a building of timber frame construction then reference must be made to the current edition of Institute of Gas Engineers Publication IGE/UP/7 (Gas Installations in Timber Framed Housing).

Zone 0

Fig. A

Zone 1

Window Recess

Zone 2

Window Recess Zone 2

Zone 2

0.6 m

In GB Only

2.25 m

Ceiling

Outside Zones

5.3.2 Data Plate

1. The boiler data badge gives details of the model, serial number and Gas Council number and is situated on the boiler lower panel. It is visible when the control box is lowered (Fig. 6).

5.3.3 Bath & Shower Rooms

Where an integral timer is NOT FITTED the boiler has a protection rating of IPX5D and if installed in a room containing a bath or shower can be within Zone 2 (but not 0 or 1).

Figs. A & B shows zone dimensions for a bathtub. For other examples refer to the Current I.E.E. Wiring Regulations). Reference must be made to the relevant requirements. In GB this is the current I.E.E. Wiring Regulations and Building Regulations. In IE reference should be made to the current edition of I.S. 813 “Domestic Gas Installations” and the current ETCI rules.

If the boiler is fitted with an integral timer it CANNOT be installed in Zone 0, 1 or 2.

Zone 0

5.3.4 Ventilation

0.6 m

Fig. B

28 EcoBlue Plus Combi 7212136 - 02 (08/14)

In GB Only

1. Where the appliance is installed in a cupboard or compartment, no air vents are required. BS 5440: Part 2 refers to room sealed appliances installed in compartments. The appliance will run sufficiently cool without ventilation.

Page 29

Before Installation 5

Examples are shown of the following methods of termination:i) to an internal soil & vent pipe ii) via an internal discharge branch (e.g. sink waste) downstream of the trap iii) to a drain or gully iv) to a purpose made soakaway v) pumped into an internal discharge branch (e.g. sink waste) downstream of the trap vi) pumped into an external soil & vent pipe vii) to a drain or gully with extended external run & trace heating

It is strongly recommended to discharge internally into the household drainage system. If connecting to a rain water drain, that drain MUST discharge into a foul drain.

Insulation

Key to

Pipework

21.5mm

32mm

5.3.5 Condensate Drain

FAILURE TO INSTALL THE CONDENSATE DISCHARGE PIPEWORK CORRECTLY WILL AFFECT THE RELIABLE OPERATION OF THE BOILER.

CAREFUL CONSIDERATION MUST BE GIVEN TO THE POSSIBILITY OF THE PIPEWORK BEING SUBJECT TO FREEZING CONDITIONS AND APPROPRIATE MEASURES TAKEN TO PREVENT BLOCKAGE. CORRECT INSTALLATION IN ACCORDANCE WITH THIS SECTION WILL CONSIDERABLY MINIMISE THE LIKELIHOOD OF BLOCKAGE AND SUBSEQUENT BOILER LOCK-OUT.

A CONDENSATE DISCHARGE PUMP AND PIPE ‘TRACE HEATING’ ARE AVAILABLE AS ACCESSORIES - see paragraphs 5.3.6.12 to 5.3.6.15 for further details.

The condensate discharge pipe MUST NOT RISE at any point along its length. There MUST be a fall of AT LEAST 2.5° (50mm per metre) along the entire run EXCEPT when employing a suitable condensate pump in basement and cellar or similar applications.

i) Termination to an internal soil

50mm per metre of pipe run

2.5° Minimum fall

450mm min*

*450mm is applicable to properties up to 3 storeys. For multi-storey building installations consult BS 6798.

ii) External termination via internal discharge branch e.g sink waste - downstream*

50mm per metre

Sink

Boiler

of pipe run

2.5° Minimum fall

and vent pipe

The boiler condensate trap incorporates a seal of 75mm, therefore it is unnecessary to install an air break and trap in the discharge pipework.

1. The condensate outlet will accept 21.5mm (

/4in) plastic

overflow pipe. It is strongly recommended that this

discharges internally into the household drainage system.

Where this is not possible, discharge into an outside drain is permissible providing every possible precaution is taken to prevent freezing.

2. Ensure the discharge of condensate complies with any national or local regulations in force. BS 6798 & Part H1 of the

Building Regulations give further detailed guidance.

3. The discharge pipe should be run in a proprietary drain pipe material e.g. PVC, PVC-U, ABS, PVC-C or PP.

4. Metal pipework is NOT suitable for use in condensate discharge systems.

5. The pipe should be a minimum of 21.5mm diameter and must be supported using suitably spaced clips of the correct design to prevent sagging.

6. It is advisable that the full length of condensate pipe is

run internally and preferably be less than 3 metres.

Pipe must terminate above water level but below surrounding surface. Cut end at 45°

7. Internal runs greater than 3 metres or runs in cold areas

should use 32mm waste pipe.

8. External runs MUST be a MINIMUM of 32mm and fully insulated with material suitable for external use.

*It is NOT RECOMMENDED to connect upstream of the sink or other waste water receptacle !

7212136 - 02 (08/14) EcoBlue Plus Combi 29

Page 30

5 Before Installation

Boiler

2.5° Minimum fall

Pipe must terminate above water level but below surrounding surface. Cut end at 45°

iv) Termination to a purpose made soakaway

Further specific requirements for

Boiler

soakaway design are referred to in BS 6798.

iii) Termination to a drain or gully

50mm per metre of pipe run

9. If the boiler is fitted in an unheated location the entire condensate discharge pipe should be treated as an external run and sized and insulated accordingly.

10. In all cases discharge pipe must be installed to aid disposal of the condensate. To reduce the risk of condensate being trapped, as few bends and fittings as possible should be used and any burrs on cut pipe removed.

11. When discharging condensate into a soil stack or waste pipe the effects of existing plumbing must be considered. If soil pipes or waste pipes are subjected to internal pressure fluctuations when WC's are flushed or sinks emptied then backpressure may force water out of the boiler trap and cause appliance lockout.

12. A boiler discharge pump is available which will dispose of both condensate & high temperature water from the relief valve. It has a maximum head of 5 metres. Follow the instructions supplied with the pump.

50mm per metre

of pipe run

2.5° Minimum fall

Holes in the soak-away must face away from the building

v) pumped into an internal discharge branch (e.g. sink waste) downstream of the trap

Sink

50mm per metre of pipe run

2.5° Minimum fall

Basement or

Boiler

similar (heated)

Condensate Pump

Pipe must terminate above water level but below surrounding surface. Cut end at 45°

500mm min

13. Condensate Drain Pipe ‘Trace Heating’ Elements are available in various lengths, 1, 2, 3 & 5 metres. Where the drain is between 3 & 5 metres a 5 metre kit can be used and “doubled back” upon itself.

14. It is possible to fit the element externally on the condensate drain or internally as detailed in the instructions provided.

15. The fitting of a ‘Trace Heating’ Element is NOT a substitute for correct installation of the condensate drain. ALL requirements in this section must still be adhered to.

vi) pumped into an external soil & vent pipe

50mm per metre of pipe run

2.5° Minimum fall

Unheated Location (e.g. Garage)

Basement or similar

Boiler

30 EcoBlue Plus Combi 7212136 - 02 (08/14)

(heated)

Condensate Pump

vii) to a drain or gully with extended external run & trace heating

The ‘Trace Heating’ element must be installed in

Boiler

50mm per metre of pipe run

2.5° Minimum fall

accordance with the instructions supplied. External runs & those in unheated locations still require insulation.

Pipe must terminate above water level but below surrounding surface. Cut end at 45°

Page 31

Before Installation 5

5.3.6 Clearances

1. A flat vertical area is required for the installation of the boiler.

2. These dimensions include the necessary clearances around the boiler for case removal, spanner access and air movement. Additional clearances may be required for the passage of pipes around local obstructions such as joists running parallel to the front face of the boiler.

*This is MINIMUM recommended dimension. Greater clearance will aid installation and maintenance.

5mm Min

390mm

5mm Min

175 mm Min (300mm

Min if using 80/125mm

flueing system)

700mm

At least

1.5°

450mm Min

For Servicing

Purposes &

Operating the

Controls

5mm Min

150mm* Min

*This is MINIMUM

recommended dimension. Greater clearance will aid installation and maintenance.

7212136 - 02 (08/14) EcoBlue Plus Combi 31

In Operation

Fig.7

295mm

Page 32

5 Before Installation

5.3.7 Flue/Chimney Location

1. The following guidelines indicate the general requirements for siting balanced flue terminals. For GB recommendations are given in BS 5440 Pt 1. For IE recommendations are given in the current edition of I.S. 813 “Domestic Gas Installations”.

Due to the nature of the boiler a plume of water vapour will be discharged from the flue. This should be taken into account when siting the flue terminal.

Likely flue positions requiring a flue terminal guard

J,K

Fig. 8

Terminal Position with Minimum Distance (Fig. 8) (mm)

Directly below an opening, air brick, opening windows, etc. 300

Above an opening, air brick, opening window etc. 300

Horizontally to an opening, air brick, opening window etc. 300

Below gutters, soil pipes or drain pipes. 25 (75)

Below eaves. 25 (200)

Below balconies or car port roof. 25 (200)

From a vertical drain pipe or soil pipe. 25 (150)

From an internal or external corner. 25 (300) I Above ground, roof or balcony level. 300 J From a surface or boundary line facing a terminal. 600 K From a terminal facing a terminal (Horizontal flue). 1200

From a terminal facing a terminal (Vertical flue). 600

L From an opening in carport (e.g. door, window)

into the dwelling. 1200 M Vertically from a terminal on the same wall. 1500 N Horizontally from a terminal on the same wall. 300 R From adjacent wall to flue (vertical only). 300 S From an adjacent opening window (vertical only). 1000 T Adjacent to windows or openings on pitched and flat roofs 600 U Below windows or openings on pitched roofs 2000

In addition, the terminal should be no nearer than 150 mm to an opening in the building fabric formed for the purpose of accommodating a built-in element such as a window frame.

Only ONE 25mm clearance is allowed per installation. If one of the dimensions D, E, F, G or H is 25mm then the remainder MUST be as shown in brackets, in accordance with B.S.5440-1.

32 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 33

Te r m i nal Assembly

Top View Rear Flue

300 min

Before Installation 5

Under car ports we recommend the use of the plume displacement kit. The terminal position must ensure the safe and nuisance - free dispersal of combustion products.

2. If the terminal discharges onto a pathway or passageway, check that combustion products will not cause a nuisance and that the terminal will not obstruct the passageway.

3. If a terminal is less than 2 metres above a balcony, above ground or above a flat roof to which people have access, then a suitable terminal guard must be provided.

*4. Reduction to the boundary is possible down to 25mm but the flue deflector must be used (see 5.3.12).

The distance from a fanned draught appliance terminal installed parallel to a boundary may not be less than 300mm in accordance with the diagram opposite (Fig. 9).

Fig. 9

Plume Displacement Kit

Air Inlet

Property Boundar y Line

If fitting a Plume Displacement Flue Kit, the air inlet must be a minimum of 150mm from any opening windows or doors (see Fig. 10).

Opening Window or Door

Fig. 10

7212136 - 02 (08/14) EcoBlue Plus Combi 33

150mm MIN.

The Plume Displacement flue gas discharge terminal and air inlet must always terminate in the same pressure zone i.e. on the same facing wall.

Page 34

5 Before Installation

5.3.8 Horizontal Flue/Chimney Systems

1. The standard telescopic flue is suitable only for horizontal termination applications.

(ii)

(i)

2. All fittings should be fully engaged. The approximate engagement is 40mm. Apply the lubricant supplied to the seal on each fitting to aid assembly.

3. Maximum permissible equivalent flue lengths are: (60/100) (80/125)

Horizontal Concentric 10 metres 20 metres

4. Any additional “in line” bends in the flue system must be taken

into consideration. Their equivalent lengths are:Concentric Pipes:

135° bend 0.5 metres 93° bend 1.0 metres

Flue length is measured from point (i) to (ii) as shown. The elbow supplied with the standard horizontal telescopic flue kit is not included in any equivalent length calculations.

Horizontal Flues

Plume Displacement Kit 60 /100 dia 1M Extensions 45° & 93° elbows are also available - see the separate Flue Guide.

Read this section in conjunction with the Flue

Installation Guide supplied with the boiler.

WARNING

SUPPORT - All flue systems MUST be securely supported at a MINIMUM of once every metre & every change of direction. It is recommended that every straight piece is supported irrespective of length. Additional supports are available as accessories. VOIDS - Consideration must be given to flue systems in voids and the provision of adequate access for subsequent periodic visual inspection.

This bend is equivalent to 1 metre

(ii)

(i)

This bend is equivalent to 1 metre

Total equivalent length =

A+B+C+2 x 90° Bends

NOTE: Horizontal flue pipes should

always be installed with a fall of at least

1.5° from the terminal to allow condensate to run back to the boiler.

34 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 35

5.3.9 Flue/Chimney Lengths

Before Installation 5

315mm

Fig. 11

Ensure that no part of

the white outer chimney

duct is visible

500mm

1. The standard horizontal telescopic flue kit allows for lengths between 315mm and 500mm from elbow to terminal without the need for cutting (Fig. 11). Extensions of 250mm, 500mm & 1m are available.

The maximum permissible equivalent flue length is:

10 metres (60/100 system - vertical & horizontal) 20 metres (80/125 system - vertical & horizontal) 15 metres (80/80 twin pipe) 8 metres (60/100 system - vertical connected to ridge terminal)

5.3.10 Flue/Chimney Trim

1. The flexible flue trims supplied can be fitted on the outer and inner faces of the wall of installation.

5.3.11 Terminal Guard

1. When codes of practice dictate the use of terminal guards (Fig. 12) ‘Multifit’ accessory part no. 720627901 can be used (NOTE: This is not compatible with Flue Deflector referred to below).

Fig. 12

Flue Deflector

Fig. 13

(Ø 60/100 Flue Systems)

IMPORTANT NOTE:This document will assist in the correct installation of the various flue & chimney systems described within. However, it is the responsibility of the installer/Gas Safe registered commissioning engineer to ensure that the flue & chimney system is fitted safely and in compliance with the relevant standards and practices in force in the country of installation.

Please leave these instructions with the

Installation & Servicing Instructions.

GUIDANCE NOTES

Flue Accessories & Fitting Guide Ø 60/100 Flue Systems Ø 80/125 Flue Systems Ø 80/80 Twin Flue Systems Plume Displacement Kit

READ THESE INSTRUCTIONS IN CONJUNCTION WITH THE BOILER

INSTALLATION INSTRUCTIONS BEFORE FITTING THE FLUE

2. There must be a clearance of at least 50mm between any part of the terminal and the guard.

3. When ordering a terminal guard, quote the appliance name and model number.

4. The flue terminal guard should be positioned centrally over the terminal and fixed as illustrated.

5.3.12 Flue/Chimney Deflector

1. Push the flue deflector over the terminal end. It may point upwards as shown, or up to 45° either way from vertical. Secure the deflector to the terminal with screws provided (Fig. 13).

5.3.13 Flue/Chimney Accessories

For full details of Flue Accessories (elbows, extensions, clamps etc.) refer to the Flue Installation Guide supplied in the literature pack.

5.4 Transport

1. This product should be lifted and handled by two people. When lifting always keep your back straight and wear protective equipment where necessary. Carrying and lifting equipment should be used as required. e.g. when install in a loft.

7212136 - 02 (08/14) EcoBlue Plus Combi 35

Page 36

5 Before Installation

LIFT HERE BOTH SIDES

Pre-plumbing Fig. 14

To remove only the Wall jig slide banding to the edge and open flaps.

Slide the wall jig out of carton then close the flaps. Slide banding back on.

5.5 Unpacking & Initial Preparation

5.5.1 Unpacking

RISK ASSESSMENT - Before commencing the installation it is recommended that the ‘Five Steps to Risk Assessment’ document published by the HSE is consulted, and an assessment performed as described. GAS SUPPLY - The gas supply, gas type and pressure must be checked for suitability before connection.

1. See ‘Section 2.3.1 Handling’ before unpacking or lifting the boiler.

2. Follow the procedure on the carton to unpack the boiler or see Fig. 14a.

3. If pre-plumbing (Fig. 14) - the wall jig and fitting kit can be removed without removing the carton sleeve. Simply slide banding to the edge and open the perforated flap, lift out the jig, fitting kit and instructions. If the boiler is to be install at a later date, close the flap and reposition the banding straps, the boiler can now be store safely away.

Fig. 15

SNAP OFF

130mm

For Side Flue Exit

3/4” BSP

Connections

Fig. 14a

175 mm Minimum Clearance

Vertical Flue

Centre Line

Boiler Wall Mounting Plate

Fixing Slots

Ø 8 mm

Profile of Outercase

5 mm Minimum Side Clearance

Condensate

Pressure

Drain

Relief Valve

(15mm)

26.5

38.5mm

65 mm 65 mm 65 mm 65 mm 65 mm

162.5mm (PRV)

Hot Water

Heating

Outlet

Flow

(22mm)

(15mm)

(22mm)

Combi Only Not System

Part No. 7212143 DRAFT A

Wall Template

50 mm

Gas Inlet

Part No. 7212143

116mm Dia Minimum

Aperture For Flue Tube

228 mm

5 mm Minimum Side Clearance

Cold Water

Inlet

(15mm)

Combi Only Not System

Side Flue

Centre Line

200 mm

Recommended

150 mm Minimum Clearance

Heating Return (22mm)

Fig. 17

A small amount of water may drain from the boiler in the upright position.

5.5.2 Initial Preparation

1. After considering the location position the fixing template on the wall ensuring it is level both horizontally and vertically.

2. Mark the position of the fixing slots for the wall jig indicated on the template.

3. Mark the position of the centre of the flue hole (rear exit). For side flue exit, mark as shown (Fig. 15).

4. If required, mark the position of the gas and water pipes. Remove the template (Fig. 17).

5. Cut the hole for the flue (minimum diameter 116mm).

6. Drill the wall as previously marked to accept the wall plugs supplied. Secure the wall jig using the fixing screws.

7. Using a spirit level ensure that the wall jig is level before finally tightening the screws (Fig. 16).

8. Connect the gas and water pipes to the valves on the wall mounting plate using the copper tails supplied. Ensure that the

sealing washers are fitted between the connections.

Fit the filling loop as described in the instructions

supplied with it.

5.5.3 Flushing

Heating Flow

Fig.16

36 EcoBlue Plus Combi 7212136 - 02 (08/14)

1. Flush thoroughly and treat the system according to guidance given in B.S. 7593.

Page 37

Stop Valve

Double Check Valve

Stop Valve

Before Installation 5

5.6 Connecting Diagrams

5.6.1 System Filling and Pressurising

1. A filling point connection on the central heating return pipework must be provided to facilitate initial filling and pressurising and also any subsequent water loss replacement/refilling.

2. A filling loop is supplied with the boiler. Follow the instructions provided with it.

Fig. 18

Filling Loop Connections

Other Tap Outlets

DHW Mains Inlet

Expansion Vessel*

Temporary Loop

Boiler

CH Return

3. The filling method adopted must be in accordance with all relevant water supply regulations and use approved equipment.

4. Your attention is drawn to: for GB: Guidance G24.2 and recommendation R24.2 of the Water Regulations Guide. for IE: the current edition of I.S. 813 “Domestic Gas Installations”.

5. The sealed primary circuits may be filled or replenished by means of a temporary connection between the circuit and a supply pipe, provided a ‘Listed’ double check valve or some other no less effective backflow prevention device is permanently connected at the inlet to the circuit and the temporary connection is removed after use.

5.6.2 Domestic Hot Water Circuit

1. All DHW circuits, connections, fittings, etc. should be fully in accordance with relevant standards and water supply regulations.

2. Your attention is drawn to: for GB: Guidance G17 to G24 and recommendation R17 to R24 of the Water Regulations Guide. for IE: the current edition of I.S. 813 “Domestic Gas Installations”.

Pressure Reducer Valve*

Fig. 19

Check Valve*

To Hot Taps

Stop Tap

*See 5.6.2. for instances when these items may be required

Where Low Flow Taps or Fittings are intended to be used in the DHW system connected to a Baxi EcoBlue Plus Combi it is strongly recommended that the DHW flow rate DOES NOT fall below 2.5l/min. This will ensure reliable operation of the DHW function.

3. The Water Regulations recommendations for England and Wales prohibits backflow from appliances into the wholesome water supply due to thermal expansion. However this type of instantaneous combination boiler, with less than 15 litres of stored capacity, does not require any backflow prevention device as any thermal expansion is accommodated within the appliance. It is possible in certain circumstances that other cold water demands (e.g. washing machines, flushing of W.C.s) may affect the DHW function of the boiler. In these instances the fitting of a backflow prevention device and expansion vessel is recommended.

If a check valve, loose jumpered stop cock, water meter or water treatment device is fitted (or may be in the future) to the wholesome water supply connected to the boiler domestic hot water (DHW) inlet supply then a suitable expansion device may be required.

4. The boiler’s maximum working mains pressure is 8 bar, therefore all pipework, connections, fittings, etc. should be suitable for pressures in excess of 8 bar. A pressure reducing valve must be fitted for pressures in excess of 8 bar. The manufacturer of any outlet fittings, such as a shower valve, may require a lower maximum pressure. The pressure reduction must take account of all fittings connected to the DHW system.

7212136 - 02 (08/14) EcoBlue Plus Combi 37

Page 38

6 Installation

Remove Sealing Caps from under the Boiler before lifting into position

Engage the Boiler Mounting

Bracket on the Boiler into the

Retaining Lugs using the Aligning Lugs for position

Retaining Lugs

Aligning Lugs

Sealing Washers (x 5)

6.1 General

1. Remove the sealing caps from the boiler connections under the boiler (including the condensate trap) before lifting into position.

A small amount of water may drain from the boiler once the caps are removed. For ease of installation connect and tighten the copper tails to the valves on the wall plate BEFORE fitting the boiler !

2. Lift the boiler as indicated by the shaded areas. The boiler should be lifted by TWO PEOPLE. Engage the mounting bracket at the top rear of the boiler into the retaining lugs on the wall jig using the aligning lugs for position (Fig.21) (see ‘Handling’ section 2.3.1).

3. Insert the sealing washers between the valves and pipes on the wall jig and the boiler connections.

4. Tighten all the connections.

Lift Here Both Sides

Pressure Relief Valve

Bottom Polystyrene

Fig. 21

When the Boiler Mounting Bracket on

the Boiler is in position on the Retaining Lugs, the bottom polystyrene may be discarded allowing the boiler to

swing into position

6.2 Assembly

6.2.1 Fitting the Pressure Relief Discharge Pipe

1. Remove the discharge pipe from the kit.

2. Determine the routing of the discharge pipe in the vicinity of the boiler. Make up as much of the pipework as is practical, including the discharge pipe supplied.

Note the intended position of the pipe is between the hot water outlet and gas inlet pipes - see Section 3.2

Make all soldered joints before connecting to the pressure relief valve. Do not adjust the position of the valve. The discharge pipe must be installed before pressurising the system.

3. The pipework must be at least 15mm diameter and run continuously downwards to a discharge point outside the building. See section 5.2.9 for further details.

4. Utilising one of the sealing washers, connect the discharge pipe to the adaptor and tighten the nut hand tight, plus 1/4 turn to seal.

5. Complete the discharge pipework and route it to the outside discharge point.

Fig. 22

Discharge Pipe

38 EcoBlue Plus Combi 7212136 - 02 (08/14)

Front Panel and Control Box removed for clarity

Page 39

EV1

EV2

P. OUT

1 2 3 4

VENT

ADJ.

Prime Trap by pouring 300ml of water into flue spigot

Installation 6

6.2.2 Connecting the Condensate Drain

1. Remove the blanking cap, and using the elbow supplied, connect the condensate drain pipework to the boiler condensate trap outlet pipe.

Ensure the discharge of condensate complies with any national or local regulations in force (see British Gas “Guidance Notes for the Installation of Domestic Gas Condensing Boilers” & HHIC recommendations).

Front Panel and Control Box removed for clarity

Condensate Trap Connection (elbow supplied)

2. The elbow will accept 21.5mm (3/4in) plastic overflow pipe which should generally discharge internally into the household drainage system. If this is not possible, discharge into an outside drain is acceptable. See section 5.3.5 for further details.

3. The boiler condensate trap should be primed by pouring approximately 300ml of water into the flue spigot. Do not allow any water to fall into the air inlet.

RQRQADJ.

P. OUT

VENT

1 2 3 4

Fig. 23

6.3 Preparation

Locating Lug

Case Front Panel Securing Screws

6.3.1 Panel Removal

1. Remove the securing screws from the bottom of the case front panel.

2. Lift the panel slightly to disengage it from the locating lugs on top of the case and remove it.

Case Front Panel

7212136 - 02 (08/14) EcoBlue Plus Combi 39

Page 40

6 Installation

6.4 Air Supply / Flue Gas Connections

Wall Thickness

(X)

315mm 500mm

Connection Assembly

Terminal Assembly

Fig. 24

6.4.1 Connecting the Flue/Chimney

HORIZONTAL TELESCOPIC FLUE (concentric 60/100)

1. There are two telescopic sections, the terminal assembly and the connection assembly, a roll of sealing tape and two self tapping screws. A 93° elbow is also supplied.

2. The two sections can be adjusted to provide a length between 315mm and 500mm (Fig. 24) when measured from the flue elbow (there is 40mm engagement into the elbow).

3. Locate the flue elbow on the adaptor at the top of the boiler. Set the elbow to the required orientation (Fig. 25).

The flue elbow is angled at 93 degrees to ensure a fall

back to the boiler.

4. Measure the distance from the outside wall face to the elbow. This dimension will be known as ‘X’ (Fig. 25).

5. If the distance from the flue elbow to the outside face of the wall (‘X’ in Fig. 25) is less than 250mm the connection assembly can be discarded and the terminal assembly fitted directly into the elbow.

Fig. 25

Dimension ‘Y’

Fig. 27

‘TOP’ Label

(X)

Wall

Thickness

‘TOP’ Label

Sealing Tape

‘Peak’ to be

uppermost

6. In instances where the dimension ‘X’ (Fig. 25) is between 250mm and 315mm it will be necessary to shorten the terminal assembly by careful cutting to accommodate walls of these thicknesses.

7. To dimension ‘X’ add 40mm. This dimension to be known as ‘Y’.

8. Adjust the two telescopic sections to dimension ‘Y’ and seal the joint with the tape provided (Fig. 27). Ensure that the labels marked ‘TOP’ on the terminal and connection assemblies are uppermost.

9. Using the clearance holes in the connection assembly secure it to the terminal assembly using the screws supplied with the telescopic flue (Fig. 28).

Securing Screw

Fig. 28

40 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 41

Installation 6

Boiler Elbow

Apply the lubricant supplied for ease of assembly (do not use any other type).

Ensure elbow is

fully engaged into

boiler adaptor

Apply the lubricant supplied for ease of assembly (do not use any other type).

Ensure Flue is fully

engaged into Elbow

Adaptor

Fig. 29

10. Remove the flue elbow and insert the flue through the hole in the wall. Fit the flue trims if required, and refit the elbow to the boiler adaptor, ensuring that it is pushed fully in. Secure the elbow with the screws supplied in the boiler fitting kit (Fig. 29).

11. Draw the flue back through the wall and engage it in the elbow. It may be necessary to lubricate to ease assembly of the elbow and flue (Fig. 30).

12. Ensure that the terminal is positioned with the slots to the bottom (Fig. 31). Secure to the elbow with the screws supplied with the telescopic flue (Fig. 30).

It is essential that the flue terminal is fitted as shown to ensure correct boiler operation and prevent water entering the flue.

13. Make good between the wall and air duct outside the building, appropriate to the wall construction and fire rating.

14. If necessary fit a terminal guard (see Section 5.3.11).

There must be no part of the air duct (white tube) visible outside the property.

Fig. 30

Slots at bottom

Fig. 31

7212136 - 02 (08/14) EcoBlue Plus Combi 41

Page 42

6 Installation

6.5 Electrical Connections

6.5.1 Electrical Connections of the appliance

1. See Section 5.2.2. for details of the electrical supply. Undo the securing screws and lift the case front panel off.

Fused Spur

Fig. 35

Control Box

Fused Spur

Room ‘Stat

External Clock

2. Hinge the control box downwards. Disengage the securing tabs and open the terminal block cover. (Fig. 34).

3. If the mains cable fitted is not long enough slacken the gland

Fig. 34

nut in the right of the boiler lower panel and pass the new mains cable through it. Remove the grommet adjacent to the gland nut, pierce the diaphragm and insert the cable from the external control system.

230V

Terminal M1

230V

g/y

4. Leave sufficient slack in the cables to allow the control box to be hinged fully open. Tighten the gland nut and refit the grommet and gland nut.

5. Connect the Earth, Permanent Live and Neutral wires to the terminal strip.

Both the Permanent Live and Neutral connections are fused.

6. Refer to the instructions supplied with the external control(s).

Any thermostat must be suitable for 230V switching.

Frost Thermostat

Pipe Thermostat

7. Remove the link between connections 1 & 2. The 230V supply at connection 2 must be connected to the thermostat. The

230V

Terminal M1

230V

g/y

switched output from the thermostat must be connected to connection 1. (Figs. 35 & 36). If the room thermostat being used incorporates an anticipator it MUST be wired as shown in Figs. 35 & 36.

8. Replace the terminal block cover.

The 230V switched signal for external controls (Frost Stat - Room Stat - Timer) must always be taken from terminal 2 at the boiler. Live, Neutral and Earth to power these controls must be taken from the Fused Spur. For the Frost Stat to operate the boiler MUST BE IN CENTRAL HEATING MODE i.e. symbol shown.

9. Engage the front panel onto the locating lugs on top of the

Fig. 36

Case Front Panel

Locating Lug

case & secure with the securing screws at the bottom of the case.

6.5.2 Connecting External Devices

1. See Section 6.7.2. for details of fitting the optional

outdoor sensor accessory.

Case Front Panel Securing Screws

42 EcoBlue Plus Combi 7212136 - 02 (08/14)

6.6 Filling the Installation

1. See Section 5.2.6 and 5.6.1 for details of flushing and

filling the installation.

Page 43

Installation 6

6.7 External Controls6.7 External Controls

6.7.1 Installation of External Sensors

1. Various Sensors are available.

6.7.2 Optional Outdoor Sensor

North

1/2 H

2.5m Min

Full instructions are provided with the Outdoor Sensor Kit !

Positioning the Sensor

West

1. The sensor must be fixed to an external wall surface of the property it is serving. The wall must face north or west.

DO NOT position it on a south facing wall in direct

sunlight !

2. The sensor should be approximately half the height of the

living space of the property, and a minimum of 2.5m above ground level.

3. It must be positioned away from any sources of heat or

cooling (e.g. flue terminal) to ensure accurate operation. Siting the sensor above doors and windows, adjacent to vents and close to eaves should be avoided.

Connecting the Sensor

1. Ensure the electrical supply to the boiler is isolated. Undo the securing screws and lift the case front panel off.

2. Hinge the control box downwards. Disengage the securing tabs and open the terminal block cover.

From Relay Box

M2 Low Voltage

Terminal Block

3. Remove one of the grommets in the boiler lower panel, pierce the diaphragm and insert the wires from the outdoor sensor.

4. Leave sufficient slack in the wires to allow the control box to be hinged fully open. Refit the grommet.

5. Connect the wires from the outdoor sensor to positions 4 & 5 on M2 as shown. Refit the cover.

Setting the Sensor Curve

1. With the outdoor sensor fitted, the boiler central heating flow temperature is adjusted automatically to accommodate the change in heat required to optimise the efficient performance of

the boiler whilst maintaining a comfortable room temperature. The central heating buttons on the boiler adjust a “simulated room temperature” used for this optimisation.

2. This functionality requires the setting of three parameters on the boiler, to suit the heating system and the optimisation can be adjusted by the user with the central heating control buttons on the boiler control panel.

Full instructions are provided with the Outdoor Sensor Kit !

Continue with the installation and commissioning of the boiler as described in this manual.

7212136 - 02 (08/14) EcoBlue Plus Combi 43

Page 44

7 Commissioning

bar

7 Commissioning

Automatic

Air Vent

Fig. 37

Pump

Cap

Control Box removed for clarity

7.1 General

1. Reference should be made to BS:EN 12828, 12831 & 14336 when commissioning the boiler. Ensure that the condensate drain trap has been primed - see Section 6.2.2. paragraph 3.

2. At the time of commissioning, complete all relevant sections of the Benchmark Checklist at the rear of this publication.

3. Open the mains water supply to the boiler and all hot water taps to purge the DHW system.

4. Ensure that the filling loop is connected and open, then open the heating flow and return valves on the boiler. Ensure that the cap on the automatic air vent on the pump body is opened (Fig.

37).

5. The system must be flushed in accordance with BS 7593 (see Section 5.2.6) and the flushing agent manufacturers instructions.

6. Pressurise the system to 1.5 bar (Fig. 38) then close and disconnect the filling loop.

Digital pressure reading which can be accessed by via the button and scrolling to setting ‘5’. Note there may be a slight difference between the digital & gauge reading depending on boiler operating mode.

Heating

Pressure Gauge

Fig. 38

7. Test for gas tightness, turn the gas supply on and purge according to in GB BS 6891 and in IE I.S. 813 "Domestic Gas Installations".

7.2 Checklist before Commissioning

7.2.1 Preliminary Electrical Checks

1. Prior to commissioning the boiler preliminary electrical system checks should be carried out.

2. These should be performed using a suitable meter, and include checks for Earth Continuity, Resistance to Earth, Short Circuit and Polarity.

7.2.2 Checks

1. Checked:

That the boiler has been installed in accordance with these

instructions.

The integrity of the flue system and the flue seals.

The integrity of the boiler combustion circuit and the relevant

seals.

44 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 45

Commissioning 7

These buttons for

Fig. 39

De-Aeration

FUNCTION INTERRUPTION

• If the De-aeration is interrupted due to a fault the pump will cease to circulate but the function timer (approx.10 minutes) will continue to run. For this reason it is recommended to monitor the boiler display during De-aeration. If the fault cannot be rectified quickly the function must be restarted to ensure complete De-aeration.

• In the event of a loss of power the De-aeration function needs to be restarted once the power is re-established.

• In the event of low water pressure the fault code E118 will be displayed, along with the flashing and symbols. This error can be rectified by repressurising the system to at least 1.0 bar. The pump will restart automatically once the water pressure is successfully re-established and will reappear in the display.

• The De-aeration function can be repeated as necessary until all air is expelled from the system.

Flue Sampling

Point

Plug

7.3 Commissioning Procedure

7.3.1 De-Aeration Function

The display backlight remains lit approx. 10 minutes. If the backlight goes out during commissioning it does not mean that the process has been completed.

This procedure MUST be carried out !

1. Ensure the gas is turned Off! Turn the power to the boiler ON. The software version will be displayed, followed by , then •• flashing briefly before displaying the ‘Standby’ symbol .

2. Press & together and hold for at least 6 seconds until is briefly displayed followed by .

3. The De-Aeration Function is now activated. The boiler pump will run for approx. 10 minutes. During this time the pump will alternate on and off and the diverter valve will switch between heating & hot water to purge air from the system.

4. At the end of the process the boiler will return to the ‘Standby’ position.

7.4 Gas Settings

7.4.1 Checking Combustion - ‘Chimney Sweep’ Mode

The case front panel must be fitted when checking combustion. Ensure the system is cold & the gas supply turned on & purged.

The person carrying out a combustion measurement should have been assessed as competent in the use of a flue gas analyser and the interpretation of the results. See Section 10.1.3.

Important: Allow the combustion to stabilise before inserting the Combustion Analyser Probe into the Test Point. This will prevent saturation of the analyser.

Analyser Probe

After refitting the sampling point plug ensure there is no leakage of products

These buttons for ‘Chimney Sweep’

1. Press & together and hold for at least 6 seconds.

is displayed briefly followed by and the current setting point (eg. , or ) flashing alternately. Important: There may be a delay before the boiler fires.

2. To adjust the boiler input setting, press or button and the current setting point will flash (eg. , or ). Press the

or button again to alter the boiler input setting.

= MAX. HEATING input, = MAX. DHW input, = MIN. input

4. The combustion (CO level & CO/CO

2 ratio) must be measured

and recorded at MAXIMUM DHW input & MINIMUM input.

5. Follow the flow chart on the next page to comply with the requirement to check combustion on commissioning.

The system MUST be cold to ensure the boiler is operating under full demand. To obtain an accurate measurement on smaller capacity systems it may be necessary to open one or more hot taps and remove the diverter valve motor (see Section 10.3.20) in order to maintain the boiler output.

6. Press & again for at least 6 seconds to exit.

7. Press the once to bring the boiler out of ‘Standby’ mode.

8. Use the button to toggle through the CH and DHW settings to activate the required modes.

7212136 - 02 (08/14) EcoBlue Plus Combi 45

Page 46

7 Commissioning

Verify Flue Integrity

Indication that products of combustion & inlet air are mixing - further investigation is required. Check all flue components are correctly assembled, fixed & supported. Check the flue & terminal are unobstructed.

Set Boiler to Maximum Rate

(see 7.4.1) Allow the combustion to stabilise. Do not insert probe to avoid ‘flooding’ the analyser.

Perform Flue Integrity Combustion Check

Insert the analyser probe into the air inlet test point, allowing the reading to stabilise.

Is O

2  20.6% and

2 < 0.2% ?

7.4.1 Checking Combustion (cont)

9. Follow the flow chart opposite.

Check CO & Combustion Ratio at Maximum Rate

Whilst the boiler is still

Yes

operating at maximum insert the analyser probe into the flue gas test point, allowing the reading to stabilise.

Is O

2  20.6% and

2 < 0.2% ?

TURN APPLIANCE OFF !

Call 0844 871 1555 for advice. The appliance MUST NOT be commissioned until all problems are identified and resolved.

Yes

Verify Integrity of Seals

Check all burner seals, internal flue seals, door & case seals. Replace any seals that appear unsound.

Is CO < 350ppm and CO/CO

2 ratio

< 0.004 ?

TURN APPLIANCE OFF !

Call 0844 871 1555 for advice. The appliance MUST NOT be commissioned until all problems are identified and resolved. If commissioning cannot be fully completed the appliance must be disconnected from the gas supply in accordance with the GSIUR. Note: Check & record the CO & combustion ratio at both maximum & minimum rates before calling 0844 871 1555.

Is CO < 350ppm and CO/CO

2 ratio

< 0.004 ?

Yes

Set Boiler to Minimum Rate

(see 7.4.1)

Yes

Allow the combustion to stabilise. Do not insert probe to avoid ‘flooding’ the analyser.

Check CO & Combustion Ratio at Minimum Rate

Whilst the boiler is operating at minimum insert the analyser probe into the flue gas test point, allowing the reading to stabilise.

Is CO < 350ppm and CO/CO < 0.004 ?

Yes

BOILER OPERATING

SATISFACTORILY. NO

FURTHER ACTION

REQUIRED

Ensure test points are capped, the boiler case front panel is correctly fitted & secured and all other commissioning procedures completed. Complete the ‘Benchmark’ Checklist, recording the CO & combustion ratio readings as required.

2 ratio

46 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 47

Control Box removed for clarity

Commissioning 7

7.5 Configuring the System

7.5.1 Check the Operational (Working Gas Inlet Pressure & Gas Rate)

1. Press & together and hold for at least 6 seconds.

is displayed briefly followed by & flashing

alternately. ‘3’ represents MAXIMUM HEATING input.

2. Press or to adjust the input. represents

MAXIMUM DHW input.

3. With the boiler operating in the maximum rate condition

check that the operational (working) gas pressure at the inlet gas pressure test point is in accordance with B.S. 6798 & B.S.

6891. This must be AT LEAST 17mb !

Gas Cock Inlet

Pressure Test Point

Fig. 41

Gas Meter

Gas Valve

17-21 mbar

Gas Cock

19-23 mbar

ADJ.

P. OUT

VENT

EV2

1 2 3 4

EV1

18-22 mbar

4. Ensure that this inlet pressure can be obtained with all other

gas appliances in the property working. The pressure should be measured at the test point on the gas cock (Fig. 41).

Measure the Gas Rate

5. With any other appliances & pilot lights turned OFF the gas

rate can be measured. It should be:-

Natural Gas 24 model 2.61 m

28 model 3.05 m 33 model 3.59 m

6. Press & together and hold for at least 6 seconds

to exit the function.

7.6 Final Instructions

7.6.1 Handover

1. Carefully read and complete all sections of the Benchmark Commissioning Checklist at the rear of this publication that are relevant to the boiler and installation. These details will be required in the event of any warranty work.

The warranty will be invalidated if the Benchmark section is incomplete.

Fig. 41a

2. The publication must be handed to the user for safe keeping and each subsequent regular service visit recorded.

3. Hand over the User’s Operating, Installation and Servicing

Working Gas Pressures

Instructions, giving advice on the necessity of regular servicing.

If the pressure drops are greater than shown in Fig. 41a (above) a problem with the pipework or connections is indicated.

4 . For IE, it is necessary to complete a “Declaration of Conformity” to indicate compliance with I.S. 813. An example of this is given in I.S. 813 “Domestic Gas Installations”. This is in addition to the Benchmark Commissioning Checklist.

7212136 - 02 (08/14) EcoBlue Plus Combi 47

Page 48

7 Commissioning

5. Set the central heating and hot water temperatures to the requirements of the user. Instruct the user in the operation of the boiler and system.

Information Display

The button can be pressed so that the display shows

the following information:-

‘00’ alternates with Sub-Code (only when fault on boiler) or ‘000’

‘01’ alternates with CH Flow Temperature

‘02’ alternates with Outside Temperature (where Sensor fitted)

‘03’ alternates with DHW Temperature

‘04’ alternates with DHW Temperature

‘05’ alternates with System Water Pressure

‘06’ alternates with CH Return Temperature

‘07’ alternates with Flue Temperature

‘08’ - not used

‘10’ alternates with Zone 1 CH Flow Temperature

‘11’ alternates with Zone 2 CH Flow Temperature

‘12’ alternates with Ion current

‘13’ alternates with Burner working hours

‘14’ alternates with Zone 1 CH mode

‘15’ alternates with Zone 2 CH mode

‘16’ alternates with DHW circuit operating mode

‘17’ alternates with Boiler operating mode

‘18’ alternates with Solar plant operating mode

‘19’ alternates with Manufacturer information

‘20’ alternates with Manufacturer information

Depending upon boiler model and any system controls connected to the appliance, not all information codes will be displayed and some that are will not have a value. Press to return to the normal display.

6. Instruct the user in the operation of the boiler controls.

7. Demonstrate to the user the action required if a gas leak occurs or is suspected. Show them how to turn off the gas supply at the meter control, and advise them not to operate electric light or power switched, and to ventilate the property.

8. Show the user the location of the system control isolation switch, and demonstrate its operation.

9. Advise the user that they may observe a plume of vapour from the flue terminal, and that it is part of the normal operation of the boiler.

7.6.2 System Draining

1. If at any time after installation it is necessary to drain & refill the central heating system (e.g. when replacing a radiator) the De-Aeration Function should be activated.

Re-pressurise the system to 1.5 bar

2. On refilling the system ensure that there is no heating or hot water demand, but that there is power to the boiler. It is also recommended that the gas supply is turned off to prevent inadvertent ignition of the burner.

3. Press & together and hold for at least 6 seconds. The ‘De-Aeration’ Function will be activated.

4. The boiler pump will run for up to 10 minutes during which time the diverter valve will switch between heating & hot water. This will purge air from the system. The display will show .

5. Once De-Aeration is complete recommission the appliance and check that the inhibitor concentration is sufficient.

See Section 7.3.1 for more detail.

48 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 49

8 Operation

Operation 8

8.1 General

1. It is the responsibility of the installer to instruct the user in the

day to day operation of the boiler and controls and to hand over the completed Benchmark Checklist at the back of this manual.

2. Set the central heating and hot water temperatures to the

requirements of the user. Instruct the user in the operation of the boiler and system.

3. The temperature on the boiler must be set to a higher

temperature than the cylinder thermostat to achieve the required hot water demand.

4. Instruct the user in the operation of the boiler and system

controls.

5. Demonstrate to the user the action required if a gas leak

occurs or is suspected. Show them how to turn off the gas supply at the meter control, and advise them not to operate electric light or power switched, and to ventilate the property.

6. Show the user the location of the system control isolation

switch, and demonstrate its operation.

7. Advise the user that they may observe a plume of vapour from

the flue terminal, and that it is part of the normal operation of the boiler.

8. The method of repressurising the primary system should be

demonstrated.

9. If at any time after installation it is necessary to drain & refill

the central heating system (e.g. when replacing a radiator) the De-Aeration Function should be activated (see 7.6.2).

8.2 To Start-up

Switch on the boiler at the fused spur unit and ensure that the time control is in the on position and any other controls (e.g. room thermostat) are calling for heat.

Press the once to bring the boiler out of Standby mode. The boiler will begin its start sequence.

8.3 To Shutdown

Isolate the mains power supply at the fused spur unit.

Isolate the gas supply at the boiler valve.

7212136 - 02 (08/14) EcoBlue Plus Combi 49

Page 50

8 Operation

Boiler Information

View

Domestic Hot Water

Temperature Adjustment

Standby - Reset - Esc

Central Heating

Temperature Adjustment

Summer - Winter -

Heating Only Mode

Display Screen

8.4 Use of the Control Panel

Key to Controls

Standby - Reset - Esc Button

Boiler Information View Button

Increase CH Temperature Button

Decrease CH Temperature Button

Increase DHW Temperature Button

Decrease DHW Temperature Button

Summer / Winter / Only Heating Mode Button

Summer - Winter - Heating Only Mode

1. Press button until the required mode appears:-

Summer - DHW only mode

Winter - DHW & CH mode

Heating Only - Only CH mode

To increase or decrease the boiler temperature

1. Press to increase the Central Heating temperature.

2. Press to decrease the Central Heating temperature.

An overheat thermostat (NTC) is positioned in the heat exchanger which shuts down the appliance if the boiler temperature exceeds 100°C. Press button to

re-establish normal operating conditions.

To adjust the domestic hot water temperature

1. Press to increase the Domestic Hot Water temperature.

2. Press to decrease the Domestic Hot Water temperature.

8.5 Frost Protection

1. The boiler incorporates an integral frost protection feature that will operate in both Central Heating and Domestic Hot Water modes, and also when in standby ( displayed) see section 4.2.3 Boiler Frost Protection Mode.

50 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 51

9 Settings

Settings 9

9.1 Parameters

The operating parameters of the boiler have been factory set to suit most systems.

7212136 - 02 (08/14) EcoBlue Plus Combi 51

Page 52

10 Maintenance

‘Service Due’ Message

After 11 months operation the ‘Service Due’ message will be shown on the boiler display. (If the installation has been subject to prolonged electrical isolation or power cuts this period may be longer than 11 months) Once the service has been completed satisfactorily the ‘Service Due’ message can be reset or de-activated.

To Reset or Disable

1. Press & for 6 seconds then press for 6 seconds. Using scroll through until is displayed. Press , or higher will be displayed.

2. Press to scroll to . Confirm with then press to return the display to normal.

3. To disable the function keep pressed until is displayed instead of .

WARNING

When changing components ensure that both the gas and electrical supplies to the boiler are isolated before any work is started. When the component has been changed recommission the boiler as described in Section 7. Always examine any seals or gaskets, replacing where necessary. The Case Front Panel MUST seal effectively against the boiler side panels.

10.1 General

1. For reasons of safety and economy, it is recommended that the boiler is serviced annually. Servicing must be performed by a competent person in accordance with B.S. 7967-4.

2. After servicing, complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of this publication.

During routine servicing, and after any maintenance or

change of part of the combustion circuit, the following

must be checked:-

• The integrity of the complete flue system and the flue seals

by checking air inlet sample to eliminate the possibility of recirculation. O2 20.6% & CO2< 0.2%

• The integrity of the boiler combustion circuit and relevant

seals.

• The operational gas inlet pressure and the gas rate as

described in Section 7.5.1.

• The combustion performance as described in ‘Check the

Combustion Performance’ below.

3. Competence to carry out Checking Combustion Performance B.S. 6798 ‘Specification for Installation & Maintenance of Gas Fired Boilers not exceeding KWh’ advises that:-

• The person carrying out a combustion measurement should

have been assessed as competent in the use of a flue gas analyser and the interpretation of the results.

Flue Sampling Point

After refitting the sampling point plug ensure there is no leakage of products

Air Sampling Point

• The flue gas analyser used should be one meeting the

requirements of BS7927 or BS-EN50379-3 and be calibrated in accordance with the analyser manufacturers’ requirements.

• Competence can be demonstrated by satisfactory completion

of the CPA1 ACS assessment, which covers the use of electronic portable combustion gas analysers in accordance with BS 7967, Parts 1 to 4.

4. Check the Combustion Performance (CO/CO2ratio)

Set the boiler to operate at maximum rate as described

in Section 7.4.

5. Remove the plug from the flue sampling point, insert the analyser probe and obtain the CO/CO2ratio. This must be less than 0.004. If the combustion reading (CO/CO2 ratio) is greater than this, and the integrity of the complete flue system and combustion circuit seals has been verified, and the inlet gas pressure and gas rate are satisfactory either:-

• Perform the ‘Standard Inspection and Maintenance’ (Section

10.2) & re-check.

• Perform ‘Setting the Gas Valve’ (Section 10.3.25) & re-check.

• Replace and set the gas valve (Sections 10.3.24 & 25) &

re-check.

52 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 53

Maintenance 10

10.2 Standard Inspection and Maintenance Operation

When performing any inspection or maintenance personal protective equipment must be used where appropriate.

1. Ensure that the boiler is cool and that both the gas and electrical supplies to the boiler are isolated.

2. Remove the screws securing the case front panel. Lift the panel slightly to disengage it from the tabs on top of the case (Fig. 43). Hinge down the control box.

3. To aid access disconnect the igniter plug & disconnect the two pipes from the top of the condensate trap and the drain pipe from the trap outlet. Undo the screw & washer securing the trap to the boiler lower panel.

Case Front Panel Securing Screws

Condensate Trap

Condensate Drain Pipe Connection

Fan, Collector and

Cover Assembly

Control Box removed for clarity

Gasket

4. Disengage the lip on the trap from the slotted bracket and remove the trap. Take care not to spill any residual condensate on the controls and P.C.B. Thoroughly rinse the trap and examine the gasket on the trap base, replacing if necessary.

5. Remove the clip securing the gas feed pipe to the air/gas venturi. Disconnect the pipe. Do not break the joint between the pipe and gas valve unless necessary.

6. Note their position and disconnect the electrode leads and the fan electrical plugs (Fig. 46).

7. Undo the four 10mm nuts retaining the combustion box cover to the heat exchanger.

8. Carefully draw the fan, collector and cover assembly forward (Fig. 46).

9. Clean any debris from the heat exchanger and check that the gaps between the coils are clear.

10. Inspect the burner, electrodes position (Fig. 45) and insulation, cleaning or replacing if necessary. Clean any dirt or dust from the boiler.

11. Carefully examine all seals, insulation & gaskets, replacing as necessary. Look for any evidence of leaks or corrosion, and if found determine & rectify the cause.

12. Prime the trap and reconnect the pipes to the top.

Electrode

Reassemble in reverse order.

Leads

Air Box

Electrode

Position

Fig. 46

Gas Feed

Pipe

7212136 - 02 (08/14) EcoBlue Plus Combi 53

Securing Clip

Fig. 45

Flame Sensing Electrode

7.5

Spark Ignition Electrode

0.5

Page 54

10 Maintenance

Control Box removed for clarity

Flow Restrictor

Expansion Vessel Charge - 1.0 bar

13. To check the charge accurately ensure the system is cold. It is also necessary to relieve the pressure by draining the boiler. Using a suitable gauge check the pressure at the valve on the underside of the vessel. Adjust the pressure as required and repressurise the system.

A right angled valve extension will aid checking and repressurising.

Filter

Cartridge

Clip

Fig. 48

Turbine & Filter

Inlet/Return Manifold

DHW

Isolation Cock

Fig. 47

View underneath appliance

DHW Filter (Fig. 48)

14. If the flow of domestic hot water is diminished, it may be necessary to clean the filter.

15. Turn the cold mains isolation cock (Fig. 47) off and draw off from a hot tap.

16. Disconnect the pump cable, remove the retaining clip and extract the filter cartridge and rinse thoroughly in clean water. Reassemble and check the flow.

17. Check the operation of the Safety Pressure Relief Valve. Simulate ‘Flame Failure’ fault by isolating the supply at gas cock and operating the boiler. 133 should be displayed.

18. Reassemble the appliance in reverse order, ensuring the front case panel is securely fitted. Recommission the boiler.

19. Complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of this publication and then hand it back to the user.

10.3 Specific Maintenance Operations Changing Components

Sealing Gasket

Spark Ignition

Electrode

Leads

Fig. 49

Flame Sensing

Electrode

Sealing

Gasket

WARNING

See Section 10.2 paragraph 2 for removal of case panel door etc.

10.3.1 Spark Ignition & Flame Sensing Electrodes

1. Note their position and disconnect the electrode leads. Remove the retaining screws securing each of the electrodes to the combustion box cover and remove the electrodes, noting their orientation.

2. Check the condition of the sealing gaskets and replace if necessary. Reassemble in reverse order (Fig. 49).

3. If satisfactory combustion readings are not obtained ensure the electrode position is correct and perform the combustion check again.

54 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 55

Maintenance 10

10.3.2 Fan (Figs. 50 & 51)

1. Remove the clip securing the gas feed pipe to the air/gas venturi. Disconnect the pipe.

2. Undo the screws securing the air/gas collector to the extension piece and disconnect the fan electrical plugs (Fig. 50).

3. Remove the collector and fan assembly, being careful to retain the gasket.

4. Undo the securing screw and remove the airbox, disengaging it from the fan venturi. Undo the screws securing the fan to the collector. Retain the gasket.

5. Undo the screws securing the venturi to the fan (noting its position) and transfer to the new fan, replacing the seal if necessary. Examine the gasket(s) and replace if necessary.

Gasket

Air/Gas

Collector

Gas Feed

Cover

Pipe

Clip

Control Box removed for clarity

Fan

Air/Gas Venturi

Fig. 50

Air Box

10.3.3 Air/Gas Venturi (Figs. 50 & 51)

1. Undo the securing screw and remove the airbox, disengaging it from the fan venturi. Remove the clip securing the gas feed pipe to the venturi.

2. Undo the screws securing the collector to the extension piece and disconnect the fan electrical plugs.

3. Remove the collector and fan assembly, being careful to retain the gasket.

Seal

Venturi

4. Undo the screws securing the venturi to the fan (noting its

Fan

Fig. 51

position) and fit the new venturi, replacing the seal if necessary. Examine the gasket and replace if necessary.

5. After changing the venturi check the combustion - see Section

7.4.1.

7212136 - 02 (08/14) EcoBlue Plus Combi 55

Page 56

10 Maintenance

Extension Piece

(note orientation)

Burner Gasket

Burner

10.3.4 Burner

Cover

1. Undo the securing screw and remove the airbox, disengaging

it from the fan venturi. Remove the clip securing the gas feed pipe to the air/gas venturi and disconnect the fan electrical plugs.

2. Undo the screws securing the air/gas collector to the

extension piece. Note its orientation and remove the extension piece (where fitted) from the cover.

Gasket

Air/Gas

Collector

3. Undo the screws securing the burner. Withdraw the burner

from the cover and replace with the new one.

4. Examine the gasket(s), replacing if necessary.

Note that the gaskets are not the same !

5. After changing the burner check the combustion.

Air Box

Fig. 52

10.3.5 Insulation (Fig. 53)

Air/Gas

Collector

Spark

Ignition

Electrode

Leads

Control Box removed for clarity

Seal

Flame

Sensing

Electrode

Exchanger

Rear

Insulation

Fig. 53

Heat

Cover

Insulation

Air Box

1. Undo the securing screw and remove the airbox, disengaging

it from the fan venturi. Remove the clip securing the gas feed pipe to the air/gas venturi and disconnect the fan electrical plugs.

2. Remove the electrodes as described in section 13.1.

3. Undo the nuts holding the cover to the heat exchanger. Draw

the air/gas collector, fan and cover assembly away.

4. Remove the cover insulation piece.

5. Fit the new insulation carefully over the burner and align it with

the slots for the electrodes.

6. If the rear insulation requires replacement, remove it and all

debris from the heat exchanger. Also it may be necessary to separately remove the spring clip from the pin in the centre of the heat exchanger and the ‘L’ shaped clips embedded in the insulation.

7. Do not remove the shrink-wrapped coating from the

replacement rear insulation. Keep the insulation vertical and press firmly into position.

8. Examine the cover seal and replace if necessary. Reassemble

in reverse order.

56 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 57

Electrical

Plug

Fig. 54

Flue Sensor

Maintenance

10.3.6 Flue Sensor

1. For ease of access remove the Expansion Vessel as described in Section 10.3.23.

2. Ease the retaining tab on the sensor away and disconnect the electrical plug.

3. Turn the sensor 90° anticlockwise to remove - it is a bayonet connection.

4. Reassemble in reverse order.

10.3.7 Igniter (Fig. 54)

1. Note the position of the ignition & sensing leads and disconnect them. Also disconnect the igniter feed plug.

Mounting

Bracket

Safety

Thermostat

Spark

Connection (‘A’)

Igniter

Earth

Connection (‘B’)

Control Box removed for clarity

Heating Flow

Sensor

2. Undo the screw securing the igniter mounting bracket to the left hand side panel. Remove the igniter and bracket and transfer the bracket to the new igniter.

3. Reassemble in reverse order, reconnecting the plug and leads to the igniter.

10.3.8 Heating Flow & Return Sensors (Fig. 55)

1. There is one sensor on the flow (red wires) and one sensor on the return (blue wires). Note: For access to the return sensor first remove the fan and air/gas collector (see 10.3.2).

2. After noting the position prise the sensor clip off the pipe and disconnect the plug.

3. Connect the plug to the new sensor and ease the clip onto the pipe as close to the heat exchanger as possible.

10.3.9 Safety Thermostat (Fig. 55)

1. Pull the two spade connections off the safety thermostat.

2. Remove the screws securing the thermostat to the mounting plate on the flow pipe.

3. Reassemble in reverse order, ensuring that the connections are pushed fully on.

10.3.10 DHW NTC Sensor (Fig. 56)

Fig. 55

1. Turn off the mains cold water supply tap and draw off the residual domestic hot water.

2. Ease the retaining tab on the sensor away and disconnect the electrical plug.

Retaining

Clip

Fig. 56

DHW NTC Sensor

7212136 - 02 (08/14) EcoBlue Plus Combi 57

3. Remove the retaining clip and withdraw the sensor from the hydraulic outlet assembly. Examine the ‘O’ ring, replacing if necessary.

4. Reassemble in reverse order. The plug will only fit one way.

Page 58

10 Maintenance

Electrical

Supply Plug

Control Box removed for clarity

10.3.11 Pump - Head Only (Fig. 57)

1. Disconnect the electrical supply plug from the pump.

2. Close the flow and return isolation taps and drain the boiler

primary circuit. For ease of access remove the diverter valve motor (10.3.20).

3. Remove the socket head screws securing the pump head to

the body and draw the head away.

4. Reassemble in reverse order.

10.3.12 Pump - Complete (Fig. 58)

1. Disconnect the electrical supply plug from the pump.

2. Close the flow and return isolation taps and drain the boiler

primary circuit. For ease of access remove the heating pressure gauge (10.3.15) & diverter valve motor (10.3.20).

3. Undo the three screws securing the body to the inlet

assembly and pump flow pipe. Draw the complete pump forwards.

Socket Headed

Screw

Automatic

Air Vent

Pump Head

Fig. 57

Pump Body

Pump Flow

Pipe

4. Remove the automatic air vent and transfer to the new pump

body.

5. Examine the ‘O’ ring seals, replacing if necessary and

reassemble in reverse order.

10.3.13 Automatic Air Vent (Fig. 58)

1. See Section 10.3.23 to remove the expansion vessel. Close

the flow and return isolation taps and drain the primary circuit.

2. The automatic air vent is a bayonet fitting. Remove by twisting

anticlockwise.

3. Fit the new automatic air vent, ensuring the ‘O’ ring is fitted

and the cap is open . Reassemble in reverse order.

Fig. 58

58 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 59

Maintenance 10

Clip

‘O’ Ring Seal

Fig. 59

Pressure

Relief Valve

Discharge

Pipe

10.3.14 Safety Pressure Relief Valve (Fig. 59)

1. Close the flow and return isolation taps and drain the primary circuit.

2. To aid access disconnect the igniter plug & disconnect the two pipes from the top of the condensate trap and the drain pipe from the trap outlet. Undo the screw & washer securing the trap to the boiler lower panel.

3. Disengage the lip on the trap from the slotted bracket and remove the trap, taking care not to spill any residual condensate.

4. Disconnect the discharge pipe from the pressure relief valve and remove the sealing grommet.

5. Pull off the clip retaining the valve and withdraw it from the outlet assembly.

6. Fit the new valve and ‘O’ ring seal and reconnect the discharge pipe. Ensure the grommet is in place to maintain the integrity of the case seal. Refit the condensate trap.

10.3.15 Heating Pressure Gauge (Figs. 60 & 61)

Heating Pressure

Gauge Capillary

Fig. 60

Clip

Control Box removed for clarity

1. Close the flow and return isolation taps and drain the primary circuit.

2. Hinge the control box downwards. To aid access remove the diverter valve motor. Remove the clip securing the pressure gauge capillary to the hydraulic assembly.

3. Disengage the securing tabs and open the terminal block cover. Prise apart the clips that hold the gauge cap.

4. Remove the gauge, cap and gasket.

5. Fit the new gauge, ensuring that the capillary is routed to prevent any sharp bends. Locate the ridge on the gauge body in the slot in the control box.

6. Reassemble in reverse order and ensure the gasket is in position to maintain the integrity of the case seal.

Heating

Pressure

Gauge

Fig. 61

7212136 - 02 (08/14) EcoBlue Plus Combi 59

Page 60

10 Maintenance

Plate Heat

Exchanger

Control Box removed for clarity

10.3.16 Plate Heat Exchanger (Fig. 62 & 63)

1. Close the flow & return isolation taps and the cold mains inlet.

Drain the primary circuit and draw off any residual DHW.

2. Refer to Section 10.2 paragraphs 5 to 9 and remove the fan

etc. Also remove the diverter valve motor and disconnect the pump cable.

3. Undo the screws securing the plate heat exchanger to the

hydraulic assembly.

4. Withdraw the plate heat exchanger by manoeuvring it to the

rear of the boiler, then upwards and to the left to remove.

Seals

5. There are four rubber seals between the hydraulic assembly

and heat exchanger which may need replacement.

6. Ease the seals out of the hydraulic assembly. Replace

carefully, ensuring that the seal is inserted parallel and pushed fully in.

Rubber Seal

Hydraulic

Pressure Sensor

Plug

Securing Clip

(captive)

Fig. 62

R.H. Stud -

Note offset

7. When fitting the new heat exchanger note that the right hand

location stud is offset towards the centre (Fig. 62).

8. Reassemble in reverse order.

10.3.17 Hydraulic Pressure Sensor (Fig. 63)

1. Close the flow and return isolation taps and drain the primary

circuit. For ease of access remove the fan and collector assembly.

2. Remove the plug from the sensor and pull the retaining clip

forwards. The clip is captive and does not need to be fully removed.

3. Reassemble in reverse order.

Fig. 63

Plate Heat Exchanger

Securing Screws

Pump, Gas Valve

Assemblies and Pipework

removed for clarity

60 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 61

Maintenance 10

10.3.18 DHW Flow Regulator & Filter (Fig. 64)

1. Remove the Fan & Collector (13.2). Close the cold mains inlet and draw off any residual DHW.

2. Pull out the securing clip and prise the regulator and filter assembly out of the hydraulic inlet assembly.

3. Twist the body to unlock the bayonet connection and remove the regulator.

4. Examine and clean the filter, and reassemble in reverse order.

Control Box removed for clarity

DHW Flow Sensor

(‘Hall Effect’ Sensor)

Fig. 65

DHW Flow

Regulator & Filter

Fig. 64

10.3.19 DHW Flow Sensor (‘Hall Effect’ Sensor) (Fig. 65)

1. Pull the sensor off the DHW inlet manifold.

2. Disconnect the plug from the sensor and connect it to the new

component.

3. Fit the new sensor, ensuring it is correctly oriented and fully

engaged over the manifold.

10.3.20 Diverter Valve Motor (Fig. 66)

1. Undo the screw securing the electrical plug to the motor unit.

Disconnect the plug.

2. Hold the motor in place against the spring pressure of the

valve and remove the securing clip.

3. Remove the motor.

4. When fitting the new motor it will be necessary to hold the unit

firmly while depressing the valve return spring.

Pump, Gas Valve

Assemblies and Pipework

removed for clarity

Securing

Clip

Electrical Plug

Fig. 66

7212136 - 02 (08/14) EcoBlue Plus Combi 61

Diverter Valve

Motor

Page 62

10 Maintenance

10.3.21 Main P.C.B. (Fig. 64)

1. Ensure that the power to the boiler is isolated.

2. Release the clips securing the control box cover and lift away.

3. Note the position of all plugs and wires on the P.C.B. and disconnect them.

See Section 3.3 Electrical Diagram for details.

4. Undo the 5 securing screws and remove the P.C.B. It is retained at the left by two spring latches and the right hand edge locates in a slot.

5. Reassemble in reverse order, ensuring that the harnesses to the Control P.C.B. and terminal M2 are routed under the Main P.C.B. Check the operation of the boiler.

10.3.22 Boiler Control P.C.B. (Fig. 64)

1. Ensure that the power to the boiler is isolated.

Fig. 67

Control

Box Cover

Main P.C.B.

Boiler Control P.C.B.

2. Release the clips securing the control box cover and lift away.

3. Note the position of all plugs and wires on the P.C.B. and disconnect them.

See Section 3.3 Electrical Diagram for details.

4. Undo the 5 securing screws and remove the P.C.B. It is retained at the left by two spring latches and the right hand edge locates in a slot.

5. Disconnect the link harness between the Main & Control P.C.B.’s and undo the 4 screws securing the Control P.C.B.

6. Remove the Control P.C.B. and fit the new component. Reassemble in reverse order, ensuring that the harnesses to the Control P.C.B. and terminal M2 are routed under the Main P.C.B. Check the operation of the boiler.

62 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 63

Lock Nut

Maintenance 10

10.3.23 Expansion Vessel

1. Close the flow and return isolation taps and drain the primary

circuit.

2. Prise off the securing clip and disconnect the braided hose

from the vessel.

3 . Whilst supporting the vessel undo the locknut and manoeuvre the vessel out of the boiler.

4. Reassemble in reverse order.

Fig. 69

Gas Feed

Pipe

Expansion

Vessel

10.3.24 Gas Valve (Fig. 69)

After replacing the valve the CO2 must be checked and adjusted as detailed in Section 10.3.25 Setting the Gas Valve. Only change the valve if a suitable calibrated combustion analyser is available, operated by a competent person - see section 10.1.3.

1. Undo the screw and disconnect the electrical plug.

2. Turn the gas cock off and undo the nut on the gas valve inlet

underneath the boiler.

3. Undo the nut on the gas valve outlet. Ease the pipe aside.

NOTE: The gas nozzle injector is inserted in the gas valve outlet.

4. Remove the screws securing the gas valve to the boiler

bottom panel. Remove the valve.

5. Transfer the gas nozzle injector to the new valve, ensuring it

sits in the valve outlet. Examine the sealing washers, replacing if necessary.

6. Reassemble in reverse order.

Check gas tightness & CO2 !

Gas Nozzle Injector

Gas Valve

Electrical

Plug

Washer

Fig. 68

7212136 - 02 (08/14) EcoBlue Plus Combi 63

Washer

Gas Cock

Page 64

10 Maintenance

10.3.25 Setting the Gas Valve (CO2Check)

The CO2 must be only be checked and adjusted to set the valve if a suitable calibrated combustion analyser is available, operated by a competent person - see Section 10.1.3.

1. The combustion (CO2) may be checked after running the boiler for several minutes. To do this it is necessary to operate the boiler in ‘Chimney Sweep Mode’.

‘Chimney Sweep Mode’

• This function must not be activated whilst the burner is lit.

• The case front panel must be fitted when checking combustion.

• Ensure the system is cold

1. Press & together and hold for at least 6

seconds. is displayed briefly followed by flashing alternately with , or .

2. represents MAXIMUM HEATING input, represents MAXIMUM DHW input whilst denotes MINIMUM input.

3. Press or to adjust the input.

4. The valve must be checked and set at MAXIMUM DHW input & MINIMUM input.

Flue Sampling

Point

Plug

Analyser Probe

Fig. 70

The CO2should be 8.7% ± 0.2 at MAXIMUM

2. It is possible to alter the CO2by adjustment of the gas valve. At maximum rate the Throttle Adjustment Screw should be turned, using a suitable 2.5mm hexagon key, until the correct reading is obtained (Fig. 100).

Turning clockwise will reduce the CO2. Anticlockwise will increase th e CO2.

3. The CO2must then be checked at minimum rate.

The CO2should be 8.4% ± 0.2 at MINIMUM

4. With the boiler on minimum, the Offset Adjustment Screw must be altered, using a suitable 4mm hexagon key, after removing the cap (Fig. 100).

Turning anti-clockwise will reduce the CO2. Clockwise will increase th e CO2.

5. Check the Combustion Performance (CO/CO2ratio). This must be less than 0.004.

Refit the sampling point plug and ensure there is no leakage of products

ADJ.

EV2

Throttle

Adjustment Screw

(cover removed)

EV1

Reduce CO at max. rate

Increase CO

at max. rate

Reduce CO at min. rate

Adjustment

(cap fitted)

Increase CO

at min. rate

Offset

Screw

P. OU T

VENT

1 2 3 4

Fig. 100

If the CO2is reset at minimum

Gas Valve

rate it must be rechecked at maximum rate again and adjusted if required. If the CO

is reset at maximum rate it must be rechecked at minimum rate and adjusted if required.

64 EcoBlue Plus Combi 7212136 - 02 (08/14)

Do not turn the adjustment screws more than 1/8 of a turn at a time. Allow the analyser reading to settle before any further adjustment

Page 65

11 Troubleshooting

RRRRR

Troubleshooting 11

Table Of Error Codes

109

110

111

117

118

125

128

130

133

151

160

321

384

The button can be pressed so that the display shows the following information:‘00’ alternates with Sub-Code (only when fault on boiler) or ‘000’ ‘01’ alternates with CH Flow Temperature ‘02’ alternates with Outside Temperature (where Sensor fitted) ‘03’ alternates with stored DHW Temperature ‘04’ alternates with DHW Temperature ‘05’ alternates with System Water Pressure ‘06’ alternates with CH Return Temperature ‘07’ alternates with Flue Temperature ‘08’ - not used ‘09’ alternates with Collector Temperature ‘10’ alternates with Zone 1 CH Flow Temperature ‘11’ alternates with Zone 2 CH Flow Temperature ‘12’ alternates with Ionization current ‘13’ alternates with Burner working hours ‘14’ alternates with Zone 1 CH mode ‘15’ alternates with Zone 2 CH mode ‘16’ alternates with DHW circuit operating mode ‘17’ alternates with Boiler operating mode ‘18’ alternates with Solar plant operating mode ‘19’ alternates with Manufacturer information ‘20’ alternates with Manufacturer information

Central Heating NTC Fault

Flue NTC Fault

Central Heating Return NTC Fault

Possible Circulation Fault

Safety Thermostat Operated (pump fault)

Safety Thermostat Operated (over temperature)

Primary System Water Pressure Too High

Primary System Water Pressure Too Low

Circulation Fault (Primary)

Flame Failure (no lock-out)

Flue NTC Operated

Interruption Of Gas Supply or Flame Failure

Flame Failure

Fan or Fan Wiring Fault

Hot Water NTC Fault

False Flame

11.1 Error Codes

1. If a fault occurs on the boiler an error code may be shown by the facia display.

2. The codes are a flashing number, either two or three digit, preceded by the symbol :-

followed by 20, 28, 40, 160 or 321 indicates possible faulty

components.

110 and 111 indicate overheat of the primary system water.

117 is displayed when the primary water pressure is greater

than 2.7 bar. Restoring the correct pressure will reset the error.

118 is displayed when the primary water pressure is less than

0.5 bar. Restoring the correct pressure will reset the error.

133, indicates that the gas supply has been interrupted,

ignition has failed or the flame has not been detected.

128 is displayed if there has been a flame failure during

normal operation.

125 is displayed in either of two situations:i) If within 15 seconds of the burner lighting the boiler temperature has not changed by 1°C. ii) If within 10 minutes of the burner lighting the boiler actual temperature twice exceeds the selected temperature by 30°. In these instances poor primary circulation is indicated.

3. By pressing the 'Reset' button for 1 to 3 seconds when

110, 125 & 133 are displayed it is possible to relight the boiler.

4. If this does not have any effect, or the codes are displayed regularly further investigation is required.

11.2 Fault Finding

1. Check that gas, water and electrical supplies are available at the boiler.

2. Electrical supply = 230V ~ 50 Hz.

3. The preferred minimum gas pressure is 20 mb (NG).

4. Carry out electrical system checks, i.e. Earth Continuity, Resistance to Earth, Short Circuit and Polarity with a suitable meter.

NOTE: These checks must be repeated after any servicing or fault finding.

5. Ensure all external controls are calling for heat and check all external and internal fuses. Before any servicing or replacement of parts, ensure the gas and electrical supplies are isolated.

7212136 - 02 (08/14) EcoBlue Plus Combi 65

Page 66

11 Troubleshooting

Refer to “Illustrated Wiring Diagram” for position of terminals and components Central Heating - Follow operational sequence

Turn on mains power

The display illuminates

YES

110, 125, 133, or 384

flashing

20, 28, 40 or 321

flashing

117 or 118 flashing

Set Central Heating

temperature to Maximum.

symbol flashing, pump

runs

YES

Fan runs at correct speed

YES

Go to section ‘A’

Press the reset button for 1

to 3 seconds

Go to section ‘D’

Go to section ‘I’

Ensure all controls and

programmers are calling

for heat

160 flashing

Go to section ‘C’

YES

If 110 or 384 is flashing or re-occurs

regularly, check all PCB connections. If this

has no effect replace the PCB.

If 110 is still flashing

go to section ‘H’

Ensure controls are set to

demand and verify the

contacts are closed

Go to section ‘B’

YES

Spark at ignition electrodes

up to 5 seconds & for 4

attempts

YES

Burner lights

YES

Flame Displayed

YES

109 flashing

110 or 111 flashing

Diverter Valve open to Central Heating circuit

YES

Burner modulates to

maintain set temperature

YES

130 flashing

YES

133 and flashing

Go to section ‘E’

Burner goes out after 5

seconds

Check polarity

125 flashing after 1 min

Go to section ‘H’

Go to section ‘K’

Check Heating Flow

sensor.

Go to section ‘D’

Go to section ‘M’

YES

Go to section ‘F’. Press the

reset button for 1 to 3

seconds

133 flashing

Go to section ‘G’

Go to section ‘J’

Burner goes out

66 EcoBlue Plus Combi 7212136 - 02 (08/14)

YES

Fan stops after 15

seconds

YES

Boiler operation correct

Page 67

Domestic Hot Water - Follow operational sequence

Turn on mains power

The display illuminates

YES

Go to section ‘A’

Troubleshooting

If 110 or 384 is flashing or re-occurs

regularly, check all PCB connections. If this

has no effect replace the PCB.

110, 125, 133, or 384

flashing

20, 28, 40, 50 or 321

flashing

117 or 118 flashing

Set Hot Water temperature to

Maximum & fully open hot tap.

symbol flashing, pump runs

YES

Fan runs at correct speed

Spark at ignition electrodes

up to 5 seconds & for 4

attempts

YES

Press the reset button for 1

to 3 seconds

Go to section ‘D’

Go to section ‘I’

DHW flow rate greater

than 2litres/min

160 flashing

Go to section ‘C’

133 and flashing

YES

If 110 is still flashing

go to section ‘H’

Go to section ‘L’

Burner lights

YES

Go to section ‘F’. Press the

reset button for 1 to 3

seconds

Go to section ‘L’

Go to section ‘B’

YES

Burner lights

YES

Flame Displayed

109 flashing

110 or 111 flashing

3 Way Valve open to

Domestic Hot Water circuit

YES

Burner modulates to

maintain set temperature

130 flashing

YES

Go to section ‘E’

Burner goes out after 5

seconds

Check polarity

125 flashing after 1 min

Go to section ‘H’

Go to section ‘K’

Check CH NTC sensor.

Go to section ‘D’

Go to section ‘M’

YES

133 flashing

Go to section ‘G’

Go to section ‘J’

Burner goes out

7212136 - 02 (08/14) EcoBlue Plus Combi 67

YES

Fan stops after 15

seconds

YES

Boiler operation correct

Page 68

Troubleshooting

Fault Finding Solutions Sections

Is there 230V at:

Main terminals L and N Check electrical supply

Main terminal fuse Replace fuse

3. PCB - X10 connector

Main terminals L and N

Switch to DHW mode maximum flow and press reset. During next 3 minutes check:-

230V at PCB - X13 connector (between blue & brown - see Wiring Diagram)

Replace PCB

Check wiring

230V between PCB - X13

YES

connector (blue) and PCB - X11 connector (black) - see Wiring Diagram

Replace PCB

Connection

YES

OK at X40

Display

illuminated

230V at pump

Check wiring

YES

Display or Main PCB

fault

Replace

pump

Fan connections correct at fan &

PCB X11 and X23 connectors -

see Wiring Diagram.

YES

230V at PCB - X11 connector (between blue & brown - see Wiring Diagram)

Replace PCB

Temperature sensor faulty.

Check correct location and wiring.

YES

Cold resistance approximately 10k @ 25° C (CH & DHW sensor) 20k @ 25° C (Flue sensor) (resistance reduces with increase in temp.)

YES

Make connections

Fan jammed or

faulty wiring

Replace sensor

& reset boiler

YES

Replace fan or wire

68 EcoBlue Plus Combi 7212136 - 02 (08/14)

Gas at burner

Ensure gas is on and purged

Check wiring and PCB - X14

connector see Wiring Diagram

Replace PCB

YES

Replace gas valve & Check combustion

Page 69

Troubleshooting 11

Check and correct if necessary

1. Ignition electrode and lead

2. Electrode connection

3. Spark gap and position

Burner

Flame Sensing Electrode

7.5

YES

Check wiring (see Diagram)

and 230V at PCB X14 (between

blue & brown from igniter)

Viewing Window

YES

Replace Igniter

Spark Ignition Electrode

Replace PCB

0.5

± 4

Electrode Position

Check supply pressure at the

gas cock test point (Fig. 41):-

Natural Gas - Minimum 17 mbar

Check and correct if necessary

1. The set of the gas valve values - see Section 10.3.25)

(CO

2. Flame sensing electrode and lead connections

3. Flame sensing electrode position

Replace sensing electrode or PCB

Safety Thermostat operated

or faulty

Check for and correct any

system faults

Allow to cool. Continuity

across thermostat terminals

more than 1.5 ohm

Check Flow & Return

Sensors - see section ‘D’

7212136 - 02 (08/14) EcoBlue Plus Combi 69

YES

Replace safety thermostat

Is 110 or 111 still flashing ?

YES

Replace PCB

Page 70

11 Troubleshooting

CH system pressure less than

0.5 bar or greater than 2.7 bar on digital display

Ensure that the boiler and

system are fully vented

YES

Is there 230V at:

Check wiring and PCB -

X22 connector for approx.

5V DC between green &

black - see Wiring Diagram

Check flow temperature sensor connections

(resistance reduces with increase in temp.)

YES

and position.

Cold resistance approximately

10k @ 25° C (CH sensors)

YES

Restore correct system pressure

YES

System fault - correct

Go to section ‘B’

Replace hydraulic pressure sensor

Replace PCB

Replace sensor

1. PCB - X13 connector terminals between:-

Blue & Black (central heating mode) Blue & Brown (domestic hot water mode)

see Wiring Diagram

YES

Check diverter valve motor cable

Is there 230V at:

Diverter valve motor Replace diverter valve motor

Is mains water filter &

assembly clean, and rotor

moving freely ?

Clean or replace

YES

Replace PCB

Check wiring and PCB - X22 connector for approx. 5V DC

between red & blue from Hall effect

sensor - see Wiring Diagram

Replace PCB

YES

Replace Hall Effect Sensor

70 EcoBlue Plus Combi 7212136 - 02 (08/14)

Temperature sensors faulty. Cold resistance approximately 10k @ 25° C (CH sensor) 20k @ 25° C (Flue sensor) (resistance reduces with increase in temp.)

If pump is running the heat exchanger could be obstructed

YES

Replace sensor

Replace heat exchanger

Page 71

12 Decommissioning

Decommissioning

12.1 Decommissioning Procedure

1. Disconnect the gas & electric supplies and isolate them.

2. Drain the primary circuit and disconnect the filling device.

3 . Dismantle the chimney system and remove the boiler from the wall mounting frame.

7212136 - 02 (08/14) EcoBlue Plus Combi 71

Page 72

13 Spare Parts

13.1 General

1. If, following the annual inspection or maintenance any part of the boiler is found to need replacing, use Genuine Baxi Spare Parts only.

13.2 Spare Parts List

Key Description Manufacturers No.

No. Part No.

A Fan 720768101

B Burner - 24 & 28 7212447 Burner - 33 7212449

C Spark Ignition Electrode 720767301

D Flame Sensing Electrode 7211855

E Gas Valve 7214341

F Safety Thermostat 720765301

G Hall Effect Sensor 720061801

I Plate Heat Exchanger 720852401

J Diverter Valve Motor 720776801

K Pump 720777401

M Heating Flow/Return Sensor 720747101

N DHW NTC Sensor 720777001

O Pump Automatic Air Vent 720777601

P Hydraulic Pressure Switch 720778001

Q Heating Pressure Gauge 7212896

R Flue Sensor 720851401

S PCB - 24 7211761 PCB - 28 7211762 PCB - 33 7211763

U Ø5.0 Gas Nozzle Injector - 24 7211862 Ø5.6 Gas Nozzle Injector - 28 7211864 Ø6.6 Gas Nozzle Injector - 33 7214346

V Air/Gas Venturi - 24 7211858 V Air/Gas Venturi - 28 7211859 V Air/Gas Venturi - 33 7211860

W Boiler Control HMI PCB 7211868

72 EcoBlue Plus Combi 7212136 - 02 (08/14)

Page 73

14 Notes

Notes 14

7212136 - 02 (08/14) EcoBlue Plus Combi 73

Page 74

*All installations in England and Wales must be to Local Authority Building Control (LABC) either directly or through a

Competent Persons Scheme. A Building Regulations Compliance

will then be issued to the customer.

www.centralheating.co.uk

This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer

to keep for future reference.

Failure to install and commission according to the manufacturer’s instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty. This does not affect the customer’s statutory rights.

GAS BOILER SYSTEM COMMISSIONING CHECKLIST

Customer name: Telephone number:

Address:

Boiler make and model:

Boiler serial number:

Commissioned by (PRINT NAME): Gas Safe register number:

Company name: Telephone number:

Company address:

Commissioning date:

CONTROLS (tick the appropriate boxes)

Time and temperature control to heating

Room thermostat and programmer/timer Programmable room thermostat

Load/weather compensation Optimum start control

Time and temperature control to hot water Cylinder thermostat and programmer/timer Combination Boiler

Heating zone valves Fitted Not required

Hot water zone valves Fitted Not required

Thermostatic radiator valves Fitted Not required

Automatic bypass to system Fitted Not required

Boiler interlock Provided

ALL SYSTEMS

’s instructions Yes

What system cleaner was used?

What inhibitor was used? Quantity litres

Yes N o

CENTRAL HEATING MODE measure and record:

Gas rate m³/hr OR ft³/hr

Burner operating pressure (if applicable) mbar OR Gas inlet pressure mbar

°C

Central heating return temperature °C

COMBINATION BOILERS ONLY

Is the installation in a hard water area (above 200ppm)? Yes N o

Yes N o

DOMESTIC HOT WATER MODE Measure and Record:

Gas rate m³/hr OR ft³/hr

Burner operating pressure (at maximum rate) mbar OR Gas inlet pressure at maximum rate mbar

Cold water inlet temperature °C

Hot water has been checked at all outlets Yes Temperature °C

I/min

CONDENSING BOILERS ONLY

The condensate drain has been installed in accordance with the manufacturer’s instructions and/or BS5546/BS6798 Yes

ALL INSTALLATIONS

Record the following:

At max. rate: CO ppm AND CO/CO

Ratio

At min. rate: (where possible) CO ppm AND CO/CO

Ratio

The heating and hot water system complies with

the appropriate Building Regulations Yes

The boiler and associated products have been installed and commissioned in accordance with the manufacturer’s instructions Yes

The operation of the boiler and system controls have been demonstrated to and understood by the customer Yes

The manufacturer’s literature, including Benchmark Checklist and

Service Record, has been explained and left with the customer Yes

Commissioning Engineer’s Signature

Customer’s Signature

www.centralheating.co.uk

Page 75

www.centralheating.co.uk

It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed.

Service Provider

Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions.

SERVICE RECORD

SERVICE 01

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

SERVICE 02

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

SERVICE 03

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

SERVICE 04

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

SERVICE 05

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

SERVICE 06

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

SERVICE 07

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

SERVICE 08

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

SERVICE 09

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

SERVICE 10

Date:

Engineer name:

Company name:

Telephone No:

Gas safe register No:

Record:

At max. rate: CO ppm AND CO² %

At min. rate:

(Where Possible) CO ppm AND CO

Comments:

Signature

*All installations in England and Wales must be

to Local Authority Building Control (LABC) either directly or through a

Competent Persons Scheme. A Building Regulations Compliance

will then be issued to the customer.

Page 76

All descriptions and illustrations provided in this leaflet have been

carefully prepared but we reserve the right to make changes and

improvements in our products which may affect the accuracy of the

information contained in this leaflet. All goods are sold subject to our

standard Conditions of Sale which are available on request.

BAXI

A Trading Division of Baxi Heating UK Ltd (3879156)

Brooks House, Coventry Road, Warwick. CV34 4LL After Sales Service 0844 871 1525 Technical Enquiries 0844 871 1555 Website www.baxi.co.uk e&oe

7212136 - 02 (08/14)