Baxi Combi 105 HE Instructions de fonctionnement

Please keep these instructions in a safe place.

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

Baxi Combi 105 HE

Gas Fired Wall Mounted

Condensing Boiler

User’s Operating Instructions

2© Baxi Heating UK Ltd 2009

Natural Gas

Baxi Combi 105 HE

G.C.No47 075 18

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

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

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

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

Copyrights, Designs and Patents Act 1988.

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

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

use, to the following address:

The Company Secretary, Baxi Heating UK Ltd, The Wyvern Business Park,

Stanier Way, Derby, DE21 6BF.

Full acknowledgement of author and source must be given.

WARNING: Any person who does any unauthorised act in relation to a

1.0 Quick Reference Guide 3

2.0 Troubleshooting 4

3.0 Fault Indication 6

4.0 System Pressure & Temperature 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

Where fitted, user label for

optional timer to be applied here

This product has an energy rating (A) on a scale of A to G.

For more information see www.boilers.org.uk. This is a certification mark.

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

1.0 Quick Reference Guide

30o40o50o60o70o80o

Reset

bar

Reset

bar

ON/OFF/Reset

Selector Switch

Indicator

Neons

Central Heating

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 30 - 85° C.

Power On Indicator - The indicator will illuminate when there is power to the

boiler.

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

is being supplied to a tap or shower.

Boiler On - The indicator will illuminate when there is a demand for heat to

the boiler.

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.

Reset

Central Heating & Hot Water

Both Heating & Hot Water will operate.

Reset

Hold for approx 5 seconds and release.

Indicator

Neons

30o40o50o60o70o80o

Domestic Hot Water

Temperature Control

Reset

Domestic Hot Water

Hot Water will operate.

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

and is heating your central heating or domestic hot water.

Domestic Hot Water Pre-Heat Temperature Control

Turn the knob clockwise to increase or anticlockwise to decrease the

temperature. Range 35 - 65° C.

Position of

Optional Timer

2.0 Troubleshooting

4© Baxi Heating UK Ltd 2009

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 Power ON indicator

lit ?

Is the ( ) light on and the

( ) on ?

Check electricity to the

boiler is switched on.

Reset

Power On

Indicator

Boiler On

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 4.1.

Is the ( ) indicator neon on ?

Boiler not working

YES YES

YES

Turn the ON/OFF/Reset

Selector Switch to Reset.

Reset

YES

If boiler does not

Reset

30o40o50o60o70o80o

Flame Failure

Neon

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 Fault Indication

6© Baxi Heating UK Ltd 2009

3.1 Air Flow Monitor

1. The boiler is fitted with an air pressure sensing device. This

monitors the flue system.

2. If the ( ) neon illuminates it indicates that the flue or

flue terminal is blocked or obstructed in some way, or that

there is an internal fault. If there is no external blockage of the

flue terminal that can be easily removed contact your Installer

or Service Engineer (Fig. 1).

3.2 Pump Fault or Low Pressure

1. The neon ( ) will illuminate if the circulating pump is

faulty or the system pressure drops below the minimum

requirement (Fig. 1).

2. Check the pressure gauge as described on page 8. If the

pressure is in the normal range, a pump fault is indicated.

Contact your Installer or Service Engineer to determine the

nature of the fault.

3.3 Sensor Fault

1. When either of the ( ) or ( ) neons is illuminated a

fault on one of the temperature sensors is indicated (Fig. 1).

Contact your Installer or Service Engineer.

3.4 Pump Protection

1. With the selector switch in the on position (Fig. 2) the

pump will automatically operate for 1 minute in every 24

hours to prevent sticking.

3.5 Safety Thermostat

1. Your Baxi Combi HE is fitted with an additional safety

devices, which shut down the boiler in the event of the

system, boiler or flue overheating. The safety thermostat neon

( ) will light in this instance (Fig. 1).

3.6 Flame Failure

1. The red flame failure neon ( ) will illuminate in the event

of the burner failing to light, when incomplete lighting of the

burner occurs or blockage of the condensate drain (Fig. 1).

To Reset the Safety Thermostat or Flame Failure

1. To reset: Turn the selector fully anti-clockwise against the

spring pressure to the ‘Reset’ position for at least two seconds

and release (Fig. 3).

2. If after turning the selector to the ‘Reset’ position the boiler

does not relight or the safety thermostat or flame failure

operates repeatedly, causing boiler shutdown, a fault is

indicated. Your Installer or Service Engineer should be

contacted as soon as possible.

30o40o50o60o70o80o

Air Flow

Monitor Neon

Pump/Low

Pressure Neon

Sensor Fault

Neons

Reset

Fig. 1

Fig. 2

Safety Thermostat

Neon

Reset

Fig. 3

Flame

Failure

Neon

NOTE: The neons annotated have a dual function, indicating the temperature of the

central heating water when constantly illuminated or begin to flash to indicate a fault.

4.0 System Pressure & Temperature

bar

Fig. 4

Fig. 5

Normal Pressure

Requires

Repressurising

bar

Fault

Fig. 6

4.1 Central Heating System Pressure

1. The normal operating water pressure is between 1 and 2.5

bar (Fig. 4). If the pressure exceeds 3 bar the safety pressure

valve will operate and a fault is indicated (Fig. 6). Contact your

installer.

2. It may be necessary to repressurise the system occasionally

(Fig. 5). A filling device (the filling loop) will be fitted on the

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

consult the installer who fitted the boiler.

3. The filling loop will probably consist of two taps and a

separate metal braided hose with connection fittings.

4. Only when repressurising should the hose be connected

between the two taps. Ensure that the nuts on the pipe ends

are tightened onto the taps.

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

pressure gauge, carefully open the second tap.

6. When the needle on the gauge is indicating 1 or more turn

both taps off.

7. Disconnect the metal braided hose from the taps (a small

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

hose in a safe place for future use.

4.2 Temperature Control

1. Central Heating: The central heating hot water flow

temperature can be adjusted between 30° C (± 5° C)

minimum and 85° C (± 5° C) maximum.

2. Turn the control knob clockwise to increase the

temperature (Fig. 7). In normal winter usage we recommend

that the central heating temperature be set at maximum.

3. Domestic Hot Water: The temperature of the domestic

hot water can be adjusted by turning the control knob

clockwise to increase up to a maximum of 65° C (Fig. 8).

4. The temperature of the water is also dependent on the

water flow rate and the temperature of the mains coming into

the house.

5. By slightly reducing the flow from the tap the temperature

will increase up to the maximum if required.

6. The flow rate can be reduced down to as low as 2.5

litre/min. The boiler will still recognise the need to heat the

water.

Fig. 7 Fig. 8

Central Heating

Temperature Control

Domestic Hot Water

Temperature Control

5.0 Clearances

8© Baxi Heating UK Ltd 2009

200mm Min

780mm

450mm

200mm Min

5mm Min

450mm Min

For Servicing

Purposes

In Operation

20mm/5mm Min

see *NOTE: 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

(Fig. 34):-

Top - 200mm

Bottom - 200mm

Left side - 5mm

Right Side - 5mm

Front - 5mm (In Operation)

- 450mm (For Servicing)

*NOTE: The boiler can be operated with a clearance

of 5mm at the right. This is also sufficient for routine

maintenance. However a clearance of 20mm is

required if it is necessary to remove the secondary

heat exchanger. This should be considered when

siting the appliance and in the event of any

subsequent alteration in the area of installation.

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

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 when the selector switch is in the ( )

position. 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 To Shut Off the Boiler (Fig. 9)

1. For short periods: Turn the selector switch to the Off

position.

2. For long periods: Turn off the selector switch, electricity

and gas supplies.

If your home is to be left unoccupied for long periods

during cold weather the boiler and whole system should be

drained unless there is additional frost protection.

3. Your installer will advise you about frost protection and

draining the system.

Reset

OFF Position

(Selector Switch)

Fig. 9

7.0 Legislation

10 © Baxi Heating UK Ltd 2009

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 0051.

Product/Production certified by:

Notified Bodies 0051 & 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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