Baxi Combi 105 HE Owner's Manual
© Baxi Heating UK Ltd 2011
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 2011
Natural Gas
Baxi Combi 105 HE
G.C.No47 075 18
© Baxi Heating UK Ltd 2011 All rights reserved. No part of this publication may
be reproduced or transmitted in any form or by any means, or stored in any
retrieval system of any nature (including in any database), in each case whether
electronic, mechanical, recording or otherwise, without the prior written
permission of the copyright owner, except for permitted fair dealing under
Copyrights, Designs and Patents Act 1988.
Applications for the copyright owner’s permission to reproduce or make other
use of any part of this publication should be made, giving details of the proposed
use, to the following address:
The Company Secretary, Baxi Heating UK 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.
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
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
3
© Baxi Heating UK Ltd 2011
Reset
bar
0
1
2
3
4
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
Reset
Central Heating & Hot Water
Both Heating & Hot Water will operate.
Reset
Hold for approx 5 seconds and release.
Indicator
Neons
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
Reset
30o40o50o60o70o80
o
2
1
3
4
0
bar
30o40o50o60o70o80
o
2.0 Troubleshooting
4
© Baxi Heating UK Ltd 2011
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
0
1
2
3
4
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
NO
NO
YES
YES
YES
NO
Turn the ON/OFF/Reset
Selector Switch to Reset.
Reset
NO
YES
YES
NO
If boiler does not
Reset
Flame Failure
Neon
30o40o50o60o70o80
o
30o40o50o60o70o80
o
30o40o50o60o70o80
o
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