Baxi Duo-tec Combi 28 LPG, Duo-tec Combi 40, Duo-tec Combi 33, Duo-tec Combi 28, Duo-tec Combi 24 User Manual

Duo-tec Combi

User Guide

Gas Fired Wall Mounted Condensing Combination Boiler

24 - 28 - 33 - 40

28 LPG

United Kingdom

Please keep these instructions in a safe place.

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

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

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1.0 Quick Reference Guide 3

2.0 Troubleshooting 4

3.0 Repressurising System 6

4.0 Clearances 7

5.0 Care of the Boiler 8

6.0 Legislation 9

7.0 Warranty & Service 10

8.0 ErP Information 12

9.0 Notes 16

10.0 Emergency 19

11.0 Disposal 19

Section Page

Contents

Boiler Controls - see opposite page

for Operating Quick Reference Guide

0086

ISO 9001

FM 00866

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

Natural Gas

Baxi Duo-tec 24 Combi ErP

G.C.No47 075 96

Baxi Duo-tec 28 Combi ErP

G.C.No47 075 97

Baxi Duo-tec 33 Combi ErP

G.C.No47 075 99

Baxi Duo-tec 40 Combi ErP

G.C.No47 077 03

Propane

Baxi Duo-tec 28 LPG Combi ErP

G.C.No47 075 98

1.0 Quick Reference Guide

bar

ON/OFF/Reset Selector Switch

Display Central Heating

Temperature Control

Domestic Hot Water Temperature Control

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

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

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 between 1 and

2.0 bar. If the pressure exceeds 3 bar the safety pressure valve will operate and a fault is indicated. Contact your Installer.

Central Heating & Hot Water

Both Heating & Hot Water will operate.

Reset

Hold for approx 5 seconds and release.

Display

Position of

Optional Timer

bar

2.0 Troubleshooting

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 ?

Is the ( ) or ( ) light on and the ( ) on ?

Check electricity to the boiler is switched on.

Is the display lit ?

Display

Central Heating Indicator

Domestic Hot Water Indicator

Burner On Indicator

Boiler operating satisfactorily.

bar

Is the Central Heating System Pressure 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.

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

Typical examples of external timer

3.0 Repressurising System

bar

3.1 Central Heating System Pressure

1. The normal operating water pressure is between 1 and 2.5 bar (Fig. 1). If the pressure exceeds 3 bar 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). A filling device (the filling loop) will be fitted on the system. This will be on the boiler itself, or on pipework near to the boiler.

3. If you are unsure of its position, or cannot identify it, consult the installer who fitted the boiler.

4. The filling loop consists of two taps and a separate copper pipe with connection fittings.

5. Only when repressurising should the copper pipe be connected between the two taps. Ensure that the nuts on the pipe ends are tightened onto the taps.

6. Fully open one of the taps first, and then while watching the pressure gauge, carefully open the second tap.

7. When the needle on the gauge is indicating 1 or more turn both taps off.

8. Disconnect the copper 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

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