Main Heat
User Guide
Condensing Central Heating Boiler
12 - 15 - 18 - 24
en
United Kingdom
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 2015
Natural Gas
Main 12 Heat ErP
G.C.No41-467-23
Main 15 Heat ErP
G.C.No41-467-24
Main 18 Heat ErP
G.C.No41-467-25
Main 24 Heat ErP
G.C.No41-467-26
© Baxi Heating UK Ltd 2015 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 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
copyright work may be liable to criminal prosecution and civil claims for damages.
1.0 Operating the Boiler 3
2.0 Troubleshooting 4
3.0 Clearances 6
4.0 Care of the Boiler 7
5.0 Disposal 7
6.0 Legislation 8
7.0 Warranty & Service 9
8.0 ErP Information 11
9.0 Emergency 14
10.0 Notes 15
Section Page
Contents
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 Operating the Boiler
3
© Baxi Heating UK Ltd 2015
1.1 In Operation
1. The Main Heat is a range of high efficiency condensing
boilers.
2. In common with other condensing boilers its exceptional
efficiency means the flue gases are cooled to such an extent
that steam is often visible at the outside flue terminal.
3. The amount produced depends on system design, product
use and outside air temperature but it is not harmful to the
individual or the working of the boiler in any way.
4. Other Controls
A programmer or other type of clock should have been fitted
in your system, together with heating and hot water controls.
Full instructions on the use of these controls will have been
supplied with them.
1.2 To Light
1. Ensure that the main gas and electricity supplies to the boiler
are ON.
2. The fan will start to run and after a short period the ignition
spark will commence. Sparking will continue until the flame is
established then stop automatically. Check that a flame is
visible through the sight glass.
Sight Glass
2.0 Troubleshooting
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© Baxi Heating UK Ltd 2015
Boiler not working
START
Make sure the gas
supply is turned ON
and check if other
gas appliances are
operating (e.g. fire,
cooker).
NO
If no gas, consult
your supplier.
Is there electricity to the
boiler ?
Check electrical supply to
boiler is switched on.
NO
YES
Ignition Spark will commence
Boiler operating
satisfactorily.
NO
YES
YES
YES
Boiler fails to light ?
YES
Press the Reset Button
If boiler will not light.
CONTACT YOUR
INSTALLER OR
SERVICE
ENGINEER.
Boiler flame established
(Check that a flame is visible
through the sight glass)
Sight Glass
YES
Reset Button
2.0 Troubleshooting
5
© Baxi Heating UK Ltd 2015
Is the Timer ON and
calling for heat ?
Is the Room Thermostat (if
fitted) set high enough ?
Typical
examples of
external timer
Ensure timer is set for Central
Heating ON (see any
instructions supplied with timer)
NO
YES
YES
NO
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
12
1
11
10
9
8
CH ON
2
3
4
5
7
6
CH OFF
15
20
10
5
5
25
15
20
10
25
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