Potterton Gold Combi 24 User manual

Gold Combi
User Guide
Condensing Combination Boiler
24 - 28 - 33
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
© 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 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 Setting the Timer 10
8.0 Warranty & Service 11
9.0 ErP Information 13
10.0 Emergency 17
11.0 Disposal 17
12.0 Notes 18
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
Potterton Gold 24 Combi ErP
G.C.No47 393 43
Potterton Gold 28 Combi ErP
G.C.No47 393 44
Potterton Gold 33 Combi ErP
G.C.No47 393 46
Propane
Potterton Gold 28 LPG Combi ErP
G.C.No47 393 45

1.0 Quick Reference Guide
3
© Baxi Heating UK Ltd 2015
Reset
bar
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4
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5
PM
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AM
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0
Reset
bar
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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.
Range 35 - 60° C.
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 shown when the
needle is in the GREEN section of the gauge, between 1 and 2.5 bar. If the pressure exceeds 3
bar (needle in the RED section) 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.
Display
Integral Timer
Reset
Domestic Hot Water
Hot Water will operate.

2.0 Troubleshooting
4© Baxi Heating UK Ltd 2015
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 display lit ?
Is the ( ) or ( ) light on
and the ( ) on ?
Check electricity to the
boiler is switched on.
Reset
Display
Central Heating
Indicator Domestic Hot
Water 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 3.1.
Does the display show an error
code e.g. E133, E110 ?
Boiler not working
NO
NO
YES YES
YES
NO
Turn the ON/OFF/Reset
Selector Switch to Reset.
Reset
Error Code E119 showing low
pressure.
NO
YES
YES
NO
If boiler does not
Reset

2.0 Troubleshooting
5
© Baxi Heating UK Ltd 2015
Is the Integral Timer ON
and calling for heat ?
Ensure timer is set for Central
Heating ON (see Section 7.0 of
these instructions - ‘Setting the
Timer’)
Is the Room Thermostat (if
fitted) set high enough ?
15
10
5
20
25
15
10
5
20
25
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
NO
CONTACT YOUR
INSTALLER OR
SERVICE ENGINEER.
YES
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5
PM
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12
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AM
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0
NO

3.0 Repressurising the System
6© Baxi Heating UK Ltd 2015
bar
0
1
2
3
4
bar
0
1
2
3
4
Fig. 1 Fig. 2
Normal Pressure Requires
Repressurising
bar
0
1
2
3
4
Fault
Fig. 3
3.1 Central Heating System Pressure
1. The water pressure in the central heating system is indicated
by the pressure gauge.
2. With the system cold and the boiler not operating the
pressure should be at least 0.5 bar. During operation the
pressure should not exceed 2.5 bar, and will normally be
between 1.0 and 1.5 (Fig. 1).
3. A pressure of 3 or greater indicates a fault. The safety
pressure relief valve will operate, at a pressure of 3 (Fig. 3). It is
important that your Installer or Service Engineer is contacted
as soon as possible.
4. The minimum pressure for correct operation is 0.5. If the
pressure falls below 0.5, this may indicate a leak on the central
heating system (Fig. 2). Error Code E119 will be shown on the
display.
3.2 To Re-Pressurise the System
(Using Temporary Filling Loop)
1. It may be necessary to repressurise the system occasionally
(when the water pressure falls below 0.5 bar). A filling device
(filling loop) will be fitted on the system. This will be on the
boiler itself if the device supplied with the boiler has been used,
or on pipework near to the boiler if another device has been
used.
2. If the water pressure requires regular re-pressurising a fault or
leak is indicated (see section 3.1). Seek advice from your
installer.
3. The filling loop supplied with the boiler consists of two blue
handled isolating taps and a separate temporary filling pipe with
connection fittings (Fig. 3b).
4. Looking underneath the right hand side of the boiler, ensure
the two blue handled isolating taps are in the OFF position.
Remove the Blanking Caps (Fig. 3a).
5. Fit the temporary Filling Loop Pipe, ensuring that the flanged
washers are fitted to both ends of the pipe (Fig. 3b). Tighten the
two wing nuts on the pipe to the taps.
6. Fully open one of the blue tap handles first, and then while
watching the pressure gauge, carefully open the second blue tap
handle (Fig. 3c).
7. When the needle on the pressure gauge indicates between 1
and 2 bar, turn both taps off.
8. The temporary filling loop pipe must be disconnected and
completely removed after the system is pressurised. (Ensure the
two blue handled isolating taps are in the OFF position before
disconnecting.) Keep the pipe in a safe place.
9. Refit and hand tighten the blanking caps previously removed
(Fig. 3a).
Boiler Taps & Connections, as
viewed from underneath
Fig. 3c
Blue Tap Handle
in Open Position
Blue Tap Handle
in Open Position
Remove Blanking Caps
Fit the Filling Loop Pipe
(ensure the flanged washers are fitted to
both ends of the filling loop pipe)
Flanged Washers
Fig. 3a
Fig. 3b
Blue Tap Handle
in Off Position
Blue Tap Handle
in Off Position
Pressure
Gauge
Filling Loop
position
under boiler
Filling Loop

4.0 Clearances
7
© Baxi Heating UK Ltd 2015
Fig. 4
150mm Min*
780mm
450mm
175mm Min
(300mm Min if
using 80/125mm
flueing system)
5mm Min
5mm Min
450mm Min
For Servicing
Purposes
In Operation
5mm Min 4.1 For your Safety
NOTE: Only qualified persons are authorised to
assemble, install and maintain the installation.
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.
GB - Heating Industry definition meaning England, Scotland,
Wales, Northern Ireland, Isle of Man and the Channel Isles.
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. 4):-
Top - 175mm
Bottom - 150mm*
Left side - 5mm
Right Side - 5mm
Front - 5mm (In Operation)
- 450mm (For Servicing)
*This is the MINIMUM recommended dimension.
Greater clearance than this will aid installation and
maintenance.
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.

5.0 Care of the Boiler
8© Baxi Heating UK Ltd 2015
5.1 Cleaning the Outer case
The painted panels should be wiped with a damp cloth and
then dried completely. DO NOT USE ABRASIVE
CLEANING AGENTS.
5.2 Protection & Precaution
1. The boiler incorporates an integral frost protection feature
that will operate in both modes. 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.
5.3 Fault Indication
1. If a fault occurs on the boiler an error code may be shown
on the facia display (Fig. 5).
2. The codes are either two or three digit, preceded by the
letter 'E'. For example, code E133 will be displayed by 'E1'
alternating with '33'. E50 is shown as 'E' then '50'.
3. E20, E28, E50, E125 & E160 indicate faulty components.
You should make a note of the displayed error code and
contact your installer or service engineer. E28 may also
indicate a blocked flue or condensate drain.
4. If E110 or E130 is displayed overheat of the primary water
or flue system has occurred. Turn the selector switch to the
reset position and hold for at least 5 seconds. If the boiler
does not relight, or the code is displayed regularly contact your
installer or service engineer.
5. E119 is displayed when the primary water pressure is less
than 0.5 bar. After repressurising the system the boiler should
operate. Your installer will be able to advise you about the
method of repressurising. See page 6 for further details.
6. E133 indicates that the gas supply has been interrupted,
ignition has failed or the flame has not been detected. Ensure
that the gas supply has not been turned off, and turn the
selector switch to the reset position and hold for at least 5
seconds. If the boiler does not relight, or the code is displayed
regularly contact your installer or service engineer.
Reset
bar
0
1
2
3
4
1
2
3
4
5
PM
7
8
9
10
11
12
1
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AM
7
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10
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12
0
Display
Then
Fig. 5
Central Heating NTC Fault
Flue NTC Fault, Air Pressure Switch Fault, Blocked Flue,
Blocked Condensate or Wiring Fault
Hot Water NTC Fault
Safety Thermostat Operated
Water Pressure Switch Not Operated
Circulation Fault (Primary Circuit)
Flue NTC Operated
Interruption Of Gas Supply or Flame Failure
Fan or Fan Wiring Fault
E20
E28
E50
E110
E119
E125
E130
E133
E160
Table Of Error Codes

6.0 Legislation
9
© Baxi Heating UK Ltd 2015
6.1 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 0085.
Product/Production certified by:
Notified Bodies 0086.
For GB/IE only.
6.2 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 completed Benchmark Checklist may be required in the
event of any warranty work.

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AM
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0
7.0 Setting the Timer
10 © Baxi Heating UK Ltd 2015
7.1 Setting the Timer
The Electro-Mechanical Timer allows the central heating
system to be set every 15 minutes.
Using the three position switch the timer will allow either
constant operation, timed operation or central heating off.
Move the switch button by sliding to the desired position.
Three position switch (Fig. 6)
Constant (Top position): The heating will
be on constantly irrespective of the position
of the tappets.The heating will be controlled
by the main thermostat on the appliance
and/or any external controls.
Timed (Central position): The heating will
operate according to the position of the
tappets and be controlled as above.
0Off (Bottom position): No central heating.
Domestic hot water will operate on demand.
To set the time of day
Turn the timer outer bezel clockwise, to align the pointer
with the correct time to the nearest 15 minutes ensuring
that A.M./P.M. is considered. Do not at any time attempt to
turn the bezel anti-clockwise.
To set the timed heating program
Decide which times of the day the central heating is
required.
The heating will operate when the white tappets are set to
the outer edge of the bezel.
To ensure the heating stays OFF set the required tappets
inwards towards the centre of the bezel.
Each tappet represents 15 minutes.
For example: If the heating is not required between
10 A.M. and 11 A.M. the four tappets anticlockwise from the
10 A.M. will be set inwards (Fig. 7).
NOTE: The integral timer may have been removed and
replaced with a blanking plate depending on the type of
external controls used. In this event please consult your
installer for details.
2
3
4
5
AM
7
8
9
10
0
9
10
11
12
4
Constant
Time Pointer
Timed
Off
Rotate to adjust time
Off Position
On Position
Time Pointer
Fig. 6
Fig. 7