Baxi Main Combi 25 Eco Bedienungsanleitung

User’s Guide and

Important Warranty Information

Combi Eco

Range

Please keep these instructions in a safe place.

If you move house, please hand them over to the next occupier.

2© Baxi Heating UK Ltd 2010

Natural Gas

Main Combi 25 Eco

G.C.No47 467 01

Main Combi 30 Eco

G.C.No47 467 03

be reproduced or transmitted in any form or by any means, or stored in any

retrieval system of any nature (including in any database), in each case whether

electronic, mechanical, recording or otherwise, without the prior written

permission of the copyright owner, except for permitted fair dealing under

Copyrights, Designs and Patents Act 1988.

Applications for the copyright owner’s permission to reproduce or make other

use of any part of this publication should be made, giving details of the proposed

use, to the following address:

The Company Secretary, Baxi Heating UK Ltd,

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

1.0 Quick Reference Guide 3

2.0 Troubleshooting 4

3.0 Repressurising System 6

4.0 ‘Intelligent Pre-heat’ Feature 7

5.0 Clearances 8

6.0 Care of the Boiler 9

7.0 Legislation 10

8.0 Emergency 11

9.0 Warranty & Service 12

Section Page

Contents

Boiler Controls - see opposite page

for Operating Quick Reference Guide

The Benchmark Scheme

Baxi Heating UK Ltd is a licensed member of the Benchmark Scheme which aims

to improve the standards of installation and commissioning of domestic heating

and hot water systems in the UK and to encourage regular servicing to optimise

safety, efficiency and performance.

Benchmark is managed and promoted by the Heating and Hotwater Industry

Council. For more information visit www.centralheating.co.uk

0086

ISO 9001

FM 00866

1.0 Quick Reference Guide

Reset

bar

Reset

bar

ON/OFF/Reset

Selector Switch

Display Central Heating

Temperature Control

Domestic Hot Water

Temperature Control

& Pre-heat Selector

System Pressure Gauge

OFF Position

The boiler will not operate.

Central Heating Temperature Control

Turn the knob clockwise to increase or anticlockwise to decrease the temperature.

Range 25 - 80° C.

Domestic Hot Water Temperature Control & Pre-heat Selector

Turn the knob clockwise to increase or anticlockwise to decrease the temperature.

Range 40 - 60° C. It also activates the ‘Intelligent Pre-heat’ feature - see Section 4.0.

Central Heating Indicator - The indicator will illuminate when the boiler is in the central

heating mode.

Domestic Hot Water Indicator - The indicator will illuminate when hot water is being

supplied to a tap or shower.

Burner On Indicator - The indicator will illuminate when the burner has fired and is heating

your central heating or domestic hot water.

Boiler Output Temperature - In either the central heating or domestic hot water position

the display will illuminate showing the current boiler temperature in degrees centigrade.

Central Heating System Pressure - The normal operating water pressure is shown when the

needle is in the GREEN section of the gauge, between 1 and 2.5 bar. If the pressure exceeds 3

bar (needle in the RED section) the safety pressure valve will operate and a fault is indicated.

Contact your Installer.

Reset

Central Heating & Hot Water

Both Heating & Hot Water will operate.

Reset

Hold for approx 5 seconds and release.

Display

Position of

Optional Timer

Reset

Domestic Hot Water

Hot Water will operate.

2.0 Troubleshooting

4© Baxi Heating UK Ltd 2010

START

Make sure the gas supply is

turned ON and check if other

gas appliances are operating

(e.g. fire, cooker).

If no gas, consult your

supplier.

Is the ON/OFF/Reset

Select Switch in the

( ) position and

the display lit ?

Is the ( ) or ( ) light on

and the ( ) on ?

Check electricity to the

boiler is switched on.

Reset

Display

Central Heating

Indicator Domestic Hot

Water Indicator

Burner On

Indicator

Boiler operating satisfactorily.

bar

Is the Central Heating System

Pressure needle in the GREEN

section, between 1 and 2.5 bar ?

If the reading falls below 1 bar

repressurise the system as

described in section 3.1.

Does the display show an error

code e.g. E133, E110 ?

Boiler not working

YES YES

YES

Turn the ON/OFF/Reset

Selector Switch to Reset.

Reset

Error Code E119 showing low

pressure.

YES

If boiler does not

Reset

2.0 Troubleshooting

Is the Timer ON and calling for

heat ?

Ensure timer is set for Central

Heating ON (see any

instructions supplied with

timer).

Is the Room Thermostat (if

fitted) set high enough ?

Turn Room Thermostat to

maximum setting (typical

example shown).

If you don’t know what you need to do to

get the boiler to light, or need help with

the system and controls, contact your

installer as soon as possible.

YES

CONTACT YOUR

INSTALLER OR

SERVICE ENGINEER.

YES

CH ON CH OFF

Typical

examples of

external timer

3.0 Repressurising System

6© Baxi Heating UK Ltd 2010

bar

3.1 Central Heating System Pressure

1. The normal operating water pressure is when the

needle is in the GREEN section of the gauge, between 1

and 2.5 bar (Fig. 1). If the pressure exceeds 3 bar (needle

in the RED section) the safety pressure valve will operate

and a fault is indicated. Contact your installer.

2. It may be necessary to repressurise the system

occasionally (Fig. 2). The needle will be in the lower RED

section of the gauge, between 0 and 0.5.

3.A filling device (the filling loop) will be fitted on the

system. This will be on the boiler itself (Fig. 3), or on

pipework near to the boiler.

4. If you are unsure of its position, or cannot identify it,

consult the installer who fitted the boiler.

5. The filling loop consists of two taps and a separate

flexible pipe with connection fittings.

6. Only when repressurising should the flexible pipe be

connected between the two taps. Ensure that the nuts

on the pipe ends are tightened onto the taps.

7. Fully open one of the taps first, and then while

watching the pressure gauge, carefully open the second

tap.

8. When the needle on the gauge is indicating 1 or more,

in the green section of the gauge, turn both taps off.

9. Disconnect the flexible pipe from the taps (a small

amount of water may be present) and remove it. Keep

the pipe in a safe place for future use.

Fig. 1

Fig. 2

Normal Pressure

Requires

Repressurising

Flexible Hose

Taps

Fig. 3

4.0 ‘Intelligent Pre-heat’ Feature

Operation of Pre-heat

1. The boiler incorporates an intelligent pre-heat feature

that will ensure optimum domestic hot water

performance.

2. This features ‘learns’ the domestic hot water demand,

and pre-heats the boiler primary circuit (main heat

exchanger, pipework within the boiler case and

domestic hot water heat exchanger) in anticipation of

further demand at the same time on the next day.

3. The feature works on a 24 hour basis. If for example

there is a demand for hot water at 7:00 AM on Monday,

the pre-heat will operate at 6:50 AM on Tuesday for 1

hour. Similarly if there is a demand at 9:25 PM, the pre-

heat will operate at 9:15 PM the next day, again for 1

hour.

4. If on Tuesday at 7:00 AM there is no hot water

demand there will be no pre-heat on Wednesday at this

time.

5. The feature also operates for one hour after each

demand to maintain the temperature of the boiler.

6. There can be up to 24 pre-heat operations in a 24

hour period. While operating in the pre-heat mode the

boiler will fire up briefly 3 or 4 times in the hour to

maintain the boiler at temperature.

7. During the pre-heat period the domestic hot water

indicator will flash (Fig. 6).

8. The pre-heat feature will not operate if the DHW

Temperature Control is turned fully anticlockwise

(Fig. 4). In this position the boiler will operate as a

conventional combination boiler, providing hot water at

50° C.

9. Once the Temperature Control is turned

approximately 30° clockwise (Fig. 5) the pre-heat

feature is activated.

10. Bewteen 30° and fully clockwise the hot water

temperature can be altered from 40° and 60° C.

30°

Fig. 4

Fig. 5

Pre-heat Off

Pre-heat Activated

Fig. 6

4.1

5.0 Clearances

8© Baxi Heating UK Ltd 2010

Fig. 7

Fig. 8

200mm Min

800mm

450mm

5mm Min

450mm Min

For Servicing

Purposes

In Operation

5mm Min 5.1 For your Safety

1. This appliance must have been installed in accordance

with the manufacturer’s instructions and the regulations

in force.

2. Any modification 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.

3. Your boiler must not be operated without the casing

correctly fitted.

4. Do not interfere with any sealed components on this

boiler.

5. Take note of any warning labels on your boiler.

6. Your boiler should have the following minimum

clearances for Safety and Maintenance (Figs. 7 & 8):-

Top - 200mm

(300mm for 80/125mm flueing system)

Bottom - 200mm

Left side - 5mm

Right Side - 5mm

Front - 5mm (In Operation)

- 450mm (For Servicing)

7. If your boiler is installed in a compartment, do not use

it for storage purposes. Do not obstruct any purpose

provided ventilation openings.

8. Flammable materials must not be stored in close

proximity to your boiler.

9. Avoid skin contact when your boiler is in operation, as

some surfaces may get hot e.g. pipework.

10. Ensure that the flue terminal, outside the house,

does not become damaged or obstructed, particularly

by foliage.

11. It is important that the condensate drain system is

not blocked, modified or damaged in any way as this

would affect the operation of your boiler. Your installer

should have insulated any exposed pipework.

GB - Heating Industry definition meaning England, Scotland,

Wales, Northern Ireland, Isle of Man and the Channel Isles

200mm Min

(300mm Min if

using 80/125mm

flueing system)

At least 1.5°

6.0 Care of the Boiler

6.1 Cleaning the Outer case

The painted panels should be wiped with a damp cloth and

then dried completely. DO NOT USE ABRASIVE

CLEANING AGENTS.

6.2 Protection & Precaution

1. The boiler incorporates an integral frost protection feature

that will operate in both modes. If the boiler temperature falls

below 5° C, then the boiler will operate until the water

temperature has been raised.

2. If a system frost thermostat has been fitted (your installer

will be able to advise you), then to operate correctly and

protect your system, the gas and electricity must be left on and

the appliance set in the central heating mode.

3. The boiler incorporates an integral pump protection feature

which continually monitors the time since the pump last

operated. To prevent seizure, the pump will operate for

approximately 1 minute if it has not run in the last 24 hours.

6.3 Fault Indication

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

on the facia display (Fig. 9).

2. The codes are either two or three digit, preceded by the

letter 'E'. For example, code E133 will be displayed by 'E1'

alternating with '33'. E50 is shown as 'E' then '50'.

3. E20, E28, E50 & E160 indicate faulty components. You

should make a note of the displayed error code and contact

your installer or service engineer.

4. If E110 is displayed overheat of the primary water or flue

system has occurred. Turn the selector switch to the reset

position and hold for at least 5 seconds. If the boiler does not

relight, or the code is displayed regularly contact your installer

or service engineer.

5. E119 is displayed when the primary water pressure is less

than 0.5 bar. After repressurising the system the boiler should

operate. Your installer will be able to advise you about the

method of repressurising. See page 6 for further details.

6. E133 indicates that the gas supply has been interrupted,

ignition has failed or the flame has not been detected. Ensure

that the gas supply has not been turned off, and turn the

selector switch to the reset position and hold for at least 5

seconds. If the boiler does not relight, or the code is displayed

regularly contact your installer or service engineer.

Central Heating NTC Fault

PCB Fault

Hot Water NTC Fault

Safety Thermostat Operated

Water Pressure Switch Not Operated

Interruption Of Gas Supply or Flame Failure

Fan or Fan Wiring Fault

E20

E28

E50

E110

E119

E133

E160

Table of Error Codes

Reset

bar

Display

Then

Fig. 9

7.0 Legislation

10 © Baxi Heating UK Ltd 2010

7.1 Installation, Commissioning, Service & Repair

1. This appliance must be install in accordance with the

manufacturer’s instructions and the regulations in force. Read

the instructions fully before installing or using the appliance.

2. In GB, this must be carried out by a competent person as

stated in the Gas Safety (Installation & Use) Regulations.

3. 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.

4. In IE (Eire), this must be carried out by a competent person

as stated in I.S. 813 “Domestic Gas Installations”.

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

The boiler meets the requirements of Statutory Instrument

“The Boiler (Efficiency) Regulations 1993 No 3083” and is

deemed to meet the requirements of Directive 92/42/EEC on

the energy efficiency requirements for new hot water boilers

fired with liquid or gaseous fuels:-

Type test for purpose of Regulation 5 certified by:

Notified Body 0087.

Product/Production certified by:

Notified Bodies 0086.

For GB/IE only.

7.2 Benchmark Commissioning Checklist

1. Please ensure that the installer has fully completed the

Benchmark Checklist on the inside back pages of the

installation instructions supplied with the product and that you

have signed it to say that you have received a full and clear

explanation of its operation. The installer is legally required to

complete a commissioning checklist as a means of complying

with the appropriate Building Regulations (England and Wales).

2. All installations must be notified to Local Area Building

Control either directly or through a Competent Persons

Scheme. A Building Regulations Compliance Certificate will

then be issued to the customer who should, on receipt, write

the Notification Number on the Benchmark Checklist.

3. This product should be serviced regularly to optimise its

safety, efficiency and performance. The service engineer should

complete the relevant Service Record on the Benchmark

Checklist after each service.

4. The Benchmark Checklist may be required in the event of

any warranty work and as supporting documentation relating

to home improvements in the optional documents section of

the Home Information Pack.

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