User’s Guide and
Important Warranty Information
Combi 24
This is a Wall Mounted Combination Boiler Gas Fired Central Heating Unit.
The boiler meets the requirements of Statutory Instrument “ The Boiler (Efficiency)
Regulations 1993 No3083” 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 Body 0086.
For use in GB/IE only.
Please read this
document and keep it safe.
It will help you out should
your boiler need attention.
2
Where fitted, user label for
optional timer to be applied here.
Dear User
Thank you for choosing a Main Combination boiler. The following
instructions are simple basic steps that you can take to ensure
years of trouble free heating and hot water for your home.
Points to note
This is a gas fired, room sealed, powered flue combination boiler,
providing central heating for your home and mains fed domestic
hot water to taps and shower. It is fully automatic and does not
have a pilot light.
Priority is given to the hot water mode - when a hot water tap is
turned on the supply of heat to the central heating circuit is
interrupted.
Warranty
heateam
the service division of Baxi Potterton provide a 12
month free warranty for your peace of mind. Once your boiler is
registered with us and in the unlikely event your boiler develops
a fault and your installer is unable to assist,
heateam will provide
a free service to you provided the boiler is under 15 months
old. Otherwise heateam will offer a competitive fixed price repair
rate including parts, labour and VAT. To arrange an engineer
visit either in warranty or out, please call
heateam on 08701 655
644. It would help if you had your boiler serial number when you
call, the serial number is shown on the back cover of this guide.
Annual Service
To ensure you receive the maximum efficiency from your boiler
we recommend your boiler has an annual service so you and
your family can continue to enjoy heating and hot water comfort.
To arrange an annual service from one of our Baxi Potterton
heating experts, please call
heateam on 08701 655 644 to
arrange a visit convenient to you.
Benchmark Commissioning Check List
Please ensure that your installer hands you the boiler Installation
& Service Instructions with the “Benchmark” Commissioning
Checklist sections completed. The details in the Checklist will be
required in the event of any warranty work. Keep the instructions
in a safe place and ensure that the Service Interval Record at the
back is completed at each service visit.
12 Months Free Warranty - register today
To receive your 12 months free warranty
please complete the form supplied with the
boiler or simply call
heateam, the service
division of Baxi Potterton on 08706 000 653
or visit our web site on
www.keepingbritainwarm.co.uk and
register your boiler.
Natural Gas
Main Combi 24
G.C.No47 474 01
2
1
0
4
3
bar
Reset
Burner On
Flame Failure
Power On
3
Operating the Boiler
The Central Heating and Hot Water you need will
be available when the gas and electricity supplies
to the boiler are turned on with the timer and other
heating controls in your system set correctly.
Other heating controls are items such as
room thermostats, cylinder thermostats
and thermostatic radiator valves. To give
the most energy efficient performance
these controls can switch your boiler on
and off even when your timer is on.
Instructions on how to use your
programmer and other heating controls
should have been supplied with the items.
Baxi Potterton also produce a guide ‘How
to get the best out of your NEW Central
Heating System’. Telephone our Literature
Hotline on
08706 060 623 to request your
free copy.
1. Ensure that the electricity and gas supplies are
turned on. Check that the central heating pressure
is between 0.5 and 1.0 bar (Fig. 1).
2. Turn the On/Off/Reset selector switch either
anti-clockwise from the off position (Fig. 3) to both
central heating and domestic hot water or
clockwise to domestic hot water only.
3. In either position the green “power” neon ( )
will illuminate (Fig. 2).
4.
Position (i) In this position the central heating
will operate according to demand or provide
domestic hot water when a tap or shower is turned
on (Fig. 4). Priority is given to domestic hot water.
5.
Position (ii) In this position hot water will be
provided when a tap or shower is turned on (Fig.
5).
6. The boiler will light automatically on demand.
7. The orange “burner” neon ( ) will illuminate
when the boiler is operating and the main burner
is on (Fig. 2).
IMPORTANT: When the selector switch is in
the ‘0’ (Off) position the electrical supply to the
boiler is isolated. The boiler will not operate
and the integral timer (if fitted) will require
resetting once the selector switch is set to
either Position (i) or Position (ii).
Reset
Reset
Position (ii)
(Hot Water)
Fig. 4
Fig. 5
Reset
OFF Position
Fig. 3
Fig. 2
Fig. 1
1. On/Off/Reset Selector Switch
2. Burner On & Fault Indicator Neon
3. Power Neon
4. Flame Failure & Fault Indicator Neon
5. Central Heating Temperature Control
6. Hot Water Temperature Control
7. Central Heating System Pressure Gauge
8. Optional Integral Timer Position
12 34 5 6 7 8
2
1
0
4
3
bar
Position (i)
(Central Heating or Hot Water)
4
Fault Indication
1. Your Main Combi 24 HE has three neon
indicators. The upper two function as boiler on and
fault indicators.
2. Depending on the nature of the fault the upper two
neons will illuminate, go off or flash.
3. There are five possible combinations, each
indicating one or more fault conditions. These are
described below.
A
The flue or flue terminal is blocked or obstructed in
some way, or there is an internal fault.
If there is no external blockage of the flue that can be
easily removed contact your Installer or Service
Engineer.
B
The circulating pump is faulty or the system pressure
has dropped. Check the system pressure (see page
7). If the pressure is in the normal range a pump fault
is indicated. Contact your Installer or Service
Engineer.
C
A fault on the boiler temperature sensor is indicated.
Contact your Installer or Service Engineer.
D
The primary system or the boiler has overheated.
Allow the boiler to cool. Turn the selector switch fully
anti-clockwise against the spring pressure to the
‘Reset’ position and hold for at least 2 seconds.
If this occurs repeatedly contact your Installer or
Service Engineer.
If the boiler does not relight after resetting it is
possible that the flue has overheated. Contact your
Installer or Service Engineer.
E
The burner has failed to light, or incomplete lighting
of the burner has occurred. Turn the selector switch
fully anti-clockwise against the spring pressure to the
‘Reset’ position and hold for at least 2 seconds.
If this occurs repeatedly contact your Installer or
Service Engineer.
If the boiler does not relight after resetting blockage
of the condensate drain or trap has occurred.
Contact your Installer or Service Engineer.
Burner On
Flame Failure
Power On
Off
Fast Flashing (2 every second)
On
A
Burner On
Flame Failure
Power On
Off
Slow Flashing (1 every 2 seconds)
On
B
Burner On
Flame Failure
Power On
Slow Flashing (1 every 2 seconds)
Slow Flashing (1 every 2 seconds)
On
C
Burner On
Flame Failure
Power On
Slow Flashing (1 every 2 seconds)
On
On
D
Burner On
Flame Failure
Power On
Off
On
On
E
Reset
Reset Position
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