Potterton PROMAX 24 User manual

Promax Store
User Guide
Condensing Boiler with Integrated Hot Water Storage
24
en
United Kingdom
Please keep these instructions in a safe place.
If you move house, please hand them over to the next occupier.

Natural Gas
Potterton Promax 24 Store ErP
G.C.No41 592 47 (90 litre)
G.C.No41 592 48 (115 litre)
G.C.No41 592 49 (150 litre)
2© Baxi Heating UK Ltd 2015
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 Programmer 10
8.0 Warranty & Service 14
9.0 ErP Information 16
10.0 Notes 20
11.0 Emergency 23
12.0 Disposal 23
Section Page
Contents
Advice to Users
Promax Store provides domestic hot water from a
high performance, high efficiency version of a
traditional storage cylinder. Whenever hot water is
used it is replaced by fresh cold water and, provided
this occurs when the programmer is in a ‘DHW ON’
period, the boiler will operate to raise it to the
temperature you have selected. This will take from a
few minutes to around 20 minutes, depending on how
much hot water has been drawn from the storage
cylinder. Please adjust the time and temperature
settings on the programmer according to your
experience of the boiler’s performance and your
household’s need for hot water.
© 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.
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
0086
ISO 9001
FM 00866
IMPORTANT
Please read and understand all these instructions before commencing installation.
Please leave this manual with the customer for future reference.

3
© Baxi Heating UK Ltd 2015
1.0 Quick Reference Guide
2
1
0
4
3
bar
ON/OFF/Reset
Selector Switch
Display Central Heating
Temperature Control
Domestic Hot Water
Temperature Control
System
Pressure Gauge
Programmer
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° C to 80° C.
Domestic Hot Water Temperature Control
Turn the knob clockwise to increase or anticlockwise to decrease the temperature.
Range approximately 45° C to 65° 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
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.
Central Heating & Hot Water
Both Heating & Hot Water will operate.
Hot Water
Hot Water only will operate.
Reset
Hold for approx 5 seconds and release.
Promax HE Store
2
1
0
4
3
bar

4© Baxi Heating UK Ltd 2015
2.0 Troubleshooting
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 ?
Is the ( ) or ( ) light
on and the ( ) on ?
Check electricity to the
boiler is switched on.
Is the display lit ?
Display
Central Heating
Indicator
Domestic Hot
Water Indicator
Burner On
Indicator
Boiler operating satisfactorily.
2
1
0
4
3
bar
Is the Central Heating
System Pressure between
1 and 2.5 bar ?
If the reading falls below 1 bar
repressurise the system as
described in section 3.0.
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.
Error Code E119 showing
low pressure.
NO
YES
YES
NO
If boiler does
not Reset

5
© Baxi Heating UK Ltd 2015
2.0 Troubleshooting
Is the Integral Programmer
ON and calling for heat ?
Ensure programmer is set for
Central Heating ON or Hot
Water ON (see section 7.4 for
setting the programmer).
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
ON
M T W T F SSHW CH
ADVANCE HW CH
CH
COPY
BOOST
ENTER+
_
SET
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
HW
ADVANCE
AM

6© Baxi Heating UK Ltd 2015
3.0 Repressurising System
2
1
0
4
3
bar
2
1
0
4
3
bar
3.1 Central Heating System Pressure
1. The normal operating water pressure is
between 1 and 2.5 bar (Fig. 1). If the pressure
exceeds 3 bar the safety pressure valve will
operate and a fault is indicated. Contact your
installer.
2. It may be necessary to repressurise the system
occasionally (Fig. 2). A filling device (the filling
loop) is fitted on the boiler itself.
3. The filling loop consists of two taps and a
separate metal braided hose pipe.
4. Only when repressurising should the hose be
connected between the two taps. No tools are
necessary for this, but ensure that the wing nuts
on the hose 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 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.
Fig. 1
Fig. 2
Normal Pressure
Requires
Repressurising
RWC
Promax Store
Filling Loop

7
© Baxi Heating UK Ltd 2015
4.0 Clearances
Fig. 4
4.1 For your Safety
This appliance must have been installed in
accordance with the manufacturer’s instructions
and the regulations in force.
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.
Your boiler must not be operated without the
casing correctly fitted and forming an adequate
seal.
Do not interfere with any sealed components on
this boiler.
Take note of any warning labels on your boiler.
Your boiler should have the following minimum
clearances for Safety and Maintenance
(Fig. 4 & 5):-
Top - 250mm
Left side - 25mm
Right Side - 25mm
Front - 50mm (In Operation)
- 450mm (For Servicing)
If your boiler is installed in a compartment, do not
use it for storage purposes. Do not obstruct any
purpose provided ventilation openings.
Flammable materials must not be stored in close
proximity to your boiler.
Avoid skin contact when your boiler is in
operation, as some surfaces may get hot i.e.
pipework, flue.
Ensure that the flue terminal, outside the house,
does not become damaged or obstructed,
particularly by foliage.
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
25mm
25mm
250mm
450mm
for Servicing
purposes
50mm
In operation
Fig. 5

8© Baxi Heating UK Ltd 2015
5.0 Care of the Boiler
5.1 Cleaning the Outercase
1. The painted panels should be wiped with a
damp cloth and then dried completely. DO NOT
USE ABRASIVE CLEANING AGENTS.
5.2 Protection & Precautions
1. The boiler incorporates an integral frost
protection feature that will operate in both modes.
If the boiler temperature falls below 4° C, the
boiler will fire until a temperature of 15° C is
reached.
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 monitors the time since
the pump last operated and will operate the
pump for approximately 1 minute if it has not run
in the last 24 hours.

9
© Baxi Heating UK Ltd 2015
6.0 Legislation
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”.
Lifting - This product should be lifted and handled by two
people. Stooping should be avoided and protective
equipment worn where necessary. Carrying & lifting
equipment should be used as required, e.g. when installing
in a loft space.
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.gassaferegistered.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 Body 0086.
For GB/IE only.
6.2 Benchmark Commissioning Checklist
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).
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.
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.
The Benchmark Checklist may be required in the event of
any warranty work.

10 © Baxi Heating UK Ltd 2015
7.0 Programmer
7.1 Introduction
1. The built-in programmer is an electronic 7-day
central heating and hot water control, designed to be
easy to use and understand. Properly programmed it
will help you save energy and create a comfortable
environment in your home.
2. For convenience, morning and evening ON/OFF
periods have been pre-set in the programmer ‘memory’
and will be retained, even if the mains power supply is
interrupted. Details of these ON/OFF periods are given
in the next section, together with step-by-step setting
instructions.
3. In run mode, any combination can be set (using the
ENTER and COPY buttons) e.g.
Hot Water Programme C/Heating Programme
AUTO AUTO
or ALL DAY
or 24 HOUR (Continuous)
or OFF
4. The Promax programmer also offers the following
features :
* Up to 3 On-Off time periods every 24 hours plus
the option of programming different times for each
day of the week.
* A central heating ADVANCE button allowing an
instant switch from OFF to ON or ON to OFF
without affecting normal settings.
* A hot water BOOST button giving an extra one hour
period.
7.2 Buttons, Indicators & Symbols
Most of the control buttons on the programmer are dual
purpose. They can be used as SET buttons for inputting
time of day. ON/OFF times, etc, or as SELECT buttons
for using the advance facility and choosing override
programme options.
Figure 7 can be used to identify the SET buttons,
indicators and symbols.
7.3 Setting the Programmer
1. Turn the appliance selector switch to central heating
and hot water position.
2. Setting Day and Time
NOTE: When setting the day, time of day or switch
times, if a period exceeding 60 seconds is allowed
to elapse between button presses, the programmer
will automatically return to normal RUN mode and
any changes made since the last press of the
ENTER button will not be saved.
i) Press the SET button so that the SET INDICATOR is
pointing to the CLOCK position on the front of the
programmer. the DAY OF THE WEEK INDICATOR will
now flash (see Fig. 9).
THE RECOMMENDED COMBINATION IS :
Hot Water Programme C/Heating Programme
ALL DAY AUTO
The display should then look like this :
AM
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
Fig. 8
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
AM
Fig. 9
ON
M T W T F SSHW CH
ADVANCE HW CH
CH
COPY
BOOST
ENTER+
_
SET
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
HW
ADVANCE
AM
Fig. 7 134
2
6 7 8910
5
1 Set Indicator
2 Set Positions
3 Time of Day
4 Day of Week Indicator
5 ON/OFF Switch Period Symbol
6 SET Button
7 Minus (-) Adjust Button
8 Plus (+) Adjust Button
9 ENTER Button
10 COPY Button

11
© Baxi Heating UK Ltd 2015
7.0 Programmer
ii) Use the PLUS (+) or MINUS (-) to move the DAY OF
THE WEEK INDICATOR to the current day of the week.
Numbers relating to the day of the week are printed
along the top of the programmer display, ie
1=Monday, 2=Tuesday and so on.
iii) Press the ENTER button. The TIME OF DAY will now
flash (Fig. 10).
iv) Now use the (+) or (-) BUTTONS to alter the display
to the correct time of day making sure that the AM/PM
SYMBOL is also correct (FIG. 11).
NOTE: By pressing and releasing the (+) or (-)
buttons you advance or retard the time in 1 minute
steps. If you keep the button depressed the display
will fast cycle and the time can be changed more
rapidly.
v) Press the ENTER button. Now use the SET BUTTON
to return the SET INDICATOR to the RUN POSITION.
7.4 Setting ‘ON’ & ‘OFF’ Times
NOTE: The minimum ON or OFF period that can be
set is ten minutes.
1. The integral programmer already has a factory pre-
set suite of ON/OFF times in its memory. These are:
Monday to Friday
Hot Water Central Heating
1st ON 1st OFF 1st ON 1st OFF
6.00 am 9.00 am 6.30 am 9.00 am
2nd ON 2nd OFF 2nd ON 2nd OFF
12.00 pm 12.00 pm 12.00 pm 12.00 pm
3rd ON 3rd OFF 3rd ON 3rd OFF
4.30 pm 11.00 pm 5.00 pm 11.00 pm
Saturday / Sunday
Hot Water Central Heating
1st ON 1st OFF 1st ON 1st OFF
7.00 am 10.30 am 7.30 am 10.30 am
2nd ON 2nd OFF 2nd ON 2nd OFF
12.00 pm 1.00 pm 12.00 pm 12.00 pm
3rd ON 3rd OFF 3rd ON 3rd OFF
4.00 pm 11.30 pm 4.30 pm 11.30 pm
2. If these settings do not meet your own requirements
then they can be easily changed as follows:
i) Press the SET BUTTON twice so that the SET
INDICATOR is in a PROG position (HW or CH). The
display will indicate the ‘day’ and the DAY OF THE
WEEK INDICATOR will now flash.
ii) Use the (+) or (-) BUTTONS to move the indicator to
the day of the week that you wish to change the times
for. Press ENTER. The display will show ‘1 ON’ and
then first ON time for that day will flash (see Fig. 13).
iii) Adjust the flashing time as required by using the (+)
and (-) buttons then press ENTER. The display will now
show ‘1 OFF’ and the first programmed OFF time for
the day will flash (see Fig. 14).
iv) This can now be altered in the same way as the
‘1 ON' time mentioned above.
v) Follow the same procedure for the 2nd and 3rd
ON/OFF times remembering to press ENTER after each
change to the programme. If you do not wish to alter a
particular time then simply press ENTER and the
display will move on to the next ON/OFF time leaving
the previous one unchanged.
AM
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
Fig. 10
PM
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
Fig. 11
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
Fig. 12
AM
ON
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
Fig. 13
AM
OFF
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
Fig. 14

12 © Baxi Heating UK Ltd 2015
7.0 Programmer
NOTE: The programmer provides up to three ON/OFF
periods each day. If you do not want to use all these, a
switch period can be cancelled by programming the ON
operation for the same time as the OFF operation e.g.
2nd ON at 12.00 pm and 2nd OFF at 12.00 pm. When
the 3rd OFF time has been entered the programmer will
display the word COPY and the DAY OF THE WEEK
INDICATOR will flash (see Fig.15).
If required these ON/OFF times can now be quickly
copied so that they apply to any other day(s) you
choose. This avoids separately programming days with
identical switching times eg Monday to Friday. If not
copying press ENTER and press SET button to return
SET INDICATOR to run position.
vi) Use the (+) and (-) BUTTONS to move the DAY OF
THE WEEK INDICATOR to the next day that you wish
the times to apply and press the COPY BUTTON, the
display will indicate ‘IN’.
Continue in this way until the programme has been
copied to all the days that you wish it to apply to.
vii) When you have finished copying simply press
ENTER. The word COPY will be replaced with ‘day’
and the DAY OF THE WEEK INDICATOR will flash.
3. You can now programme those days that require
different times to the ones you have just copied by
following the same procedure as described at the start
of this section, parts ii to v.
7.5 Select Buttons, Indicators & Symbols
1. The following diagram (Fig.16) can be used to
identify the SELECT buttons and indicators.
7.6 Programme Selection
1. The following programmes can be selected for either
HOT WATER or HEATING or both together.
AUTO: When AUTO is selected the programmer
will switch ON and OFF according to the
switching times held in the memory, ie up
to three ON/OFF periods per day.
ALL DAY: When ALL DAY is selected the
programmer will switch the system on at
the 1st ON TIME and OFF at the 3rd OFF
TIME.
24 HOURS: When 24 HOUR is selected the system
remains on continuously, ignoring all the
time settings.
OFF: When OFF is selected the programmer
clock continues to operate but the system
remains off.
2. To select a hot water programme press the HW
PROGRAMME SELECT BUTTON until the HW (HOT
WATER) PROGRAMME INDICATOR is pointing to the
required programme, e.g. ALL DAY (see Fig. 17)
3. To select a central heating programme follow the
same procedure using the CH PROGRAMME SELECT
BUTTON.
NOTE: When either HOT WATER or HEATING is
switched to ON the relevant INDICATOR LIGHT will
be illuminated (see Fig.16).
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
Fig. 15
M T W T F SSHW CH
ADVANCE HW CH
CH
COPY
BOOST
ENTER+
_
SET
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
HW
ADVANCE
AM
10
1 Hot Water ON Indicator
2 Central Heating ON Indicator
3 Advance Button - Central Heating
4 Hot Water Programme Select Button
5 Central Heating Programme Select Button
6 Programme Positions
7 Central Heating Programme Indicator
8 Hot Water Programme Indicator
9 Advance Indicator
10 Boost Button - Hot Water
Fig. 16
AM
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
Fig. 17

13
© Baxi Heating UK Ltd 2015
7.0 Programmer
7.7 Using the Advance and Boost Button
1. The ADVANCE facility allows you to bring forward the
next heating ON or OFF period without having to alter
the programmed ON/OFF times.
2. Press the ADVANCE BUTTON once and release. The
word ADVANCE will appear in the display (see Fig.18).
3. If the programmer was originally ON it will now switch
OFF and stay OFF until the next programmed ON time.
4. The opposite will apply if the programmer was
originally OFF.
5. In both cases the unit will then revert to the normal
programme times.
6. If you wish to cancel the advance simply press the
ADVANCE BUTTON again and the word ADVANCE will
disappear from the display.
NOTE: The ADVANCE facility has no effect when the
CH PROGRAMME INDICATOR is in either the 24
Hour or the OFF position.
7. Pressing the BOOST button during an
unprogrammed time for hot water will give a one hour
period of hot water operation.
7.8 Programmer Faults
1. Electronic equipment can, in exceptional
circumstances, be affected by electrical interference. If
the display or switching programme becomes frozen or
scrambled, or you wish to revert to the factory pre-set
programme, you can RESET the programmer by
pressing the MINUS (-) adjust button and the
ENTER/HW SELECT BUTTON together (see Fig. 19).
2. After using the RESET procedure you will need to
reprogramme the day and time of day plus any changes
you wish to make to the factory pre-set programme.
3. The programmer is not user serviceable. DO NOT
ATTEMPT TO DISMANTLE IT.
4. In the unlikely event of it developing a fault, contact
your Gas Safe Registered Installer or Service Engineer,
but before doing so try the RESET PROCEDURE above.
5. Should a replacement programmer be required your
Installer can obtain this as Part No. 5117092.
7.9 Reserve Battery
1. The programmer is fitted with a NON-
RECHARGEABLE LONG LIFE battery which will
maintain the programmed ON/OFF settings for a period
in excess of 2 years (Part No. 5118231).
2. This is more than sufficient to cover all the expected
power interruptions during the life of the unit.
NOTE: If a power interruption of more than 48 hours
occurs the ‘time of day’ will need to be re-adjusted
once the power is restored.
AM
ADVANCE
M T W T F SSHW CH
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
Fig. 18
ON
M T W T F SSHW CH
ADVANCE HW CH
CH
COPY
BOOST
ENTER+
_
SET
RUN
CLOCK
HW PROG
CH PROG
AUTO
ALL DAY
24 HR
OFF
HW
ADVANCE
AM
Fig. 19

14
8.0 Warranty & Service
8.1 General
To make sure your boiler warranty is activated and
maintained, it is essential that the:
1. Benchmark checklist is completed by your installer
2. Warranty is registered with Baxi
3. Boiler has an annual service
Please note that failure to adhere to terms and
conditions will make your warranty invalid.
8.2.1 Standard Warranty Terms and Conditions
Warranty Registration, Service & Repair
For full terms and conditions, visit
www.baxi.co.uk/terms.
Benchmark Checklist
The Benchmark Checklist will be completed by your
installer and records that the boiler has been installed
and commissioned correctly. It can be found at the back
of the installation and service manual and should be
kept in a safe place for the life of the boiler. We will
check that the Benchmark Checklist has been
completed on an in-warranty visit.
Ways to register your warranty
If your boiler is eligible for an extended warranty, your
installer may register the product on your behalf and
provide you with the relevant documentation. Please
check with your installer.
Should this not be the case, you can register your
warranty online at www.baxi.co.uk/registration
To activate a standard two year warranty, please use
one of the following methods:
• Freephone 0800 013 7989 or
• Return the enclosed registration card
8.2 Terms of Warranty

15
8.0 Warranty & Service
Annual Service
A service must be completed every 12 months from the
date of installation to maintain your warranty.
This service must be completed by one of the following:
• A Gas Safe registered installer/engineer
• Baxi Customer Support; call us
0344 871 1525
Please make sure that your engineer has logged the
service information at the back of the installation and
service manual. You will be asked for your service
history on any in-warranty repair visit.
If you experience a problem with your boiler
For any in or out of warranty repair, Baxi Customer
Support is on hand to help you. Call our award-winning
team to arrange for one of our nationwide team of Gas
Safe registered engineers to visit.
If your product is in warranty, everything is free of
charge, subject to our warranty terms and conditions. If
it is out of warranty, we can still help and offer a range of
options you can choose from to suit your needs.
Contact Baxi Customer Support 0344 871 1525
Opening hours
Monday - Friday, 8.00am - 6.00pm
Weekends and Bank Holidays, 8.30am - 2.00pm
Please note calls may be recorded for training and
monitoring purposes.
When contacting Baxi Customer Support, please have
the following information to hand:
• Boiler serial number. This can be found on the
appliance.
• Proof of purchase if you do not have the boiler
serial number.
Please note that for in-warranty repairs, our engineers
will ask to see your service history record, completed
Benchmark Checklist and details of your installer. These
can all be found in the installation and user manual.

16
9.0 ErP Information
9.1 Product Fiche - Boiler Space Heaters
Product fiche for combination boilers
Space heating - Temperature application
Potterton Promax 24 Store ErP
Medium Medium Medium
Water heating - Declared load profile
Seasonal space heating energy efficiency class
A A A
Water heating energy efficiency class
A A B
Rated heat output
(Prated or Psup)
kW
Space heating - Annual energy consumption kWh
GJ
Water heating - Annual energy consumption kWh
GJ
Seasonal space heating energy efficiency %
Water heating energy efficiency %
Sound power level LWA indoors dB
See
For specific precautions about assembling, installing and maintaining,
consult the relevant section as detailed on the Contents page.
90 115 150
XL XL XL
24 24 24
20870 20870 20870
75 75 75
16 16 19
92 92 92
90 92 77
57 57 57
© Baxi Heating UK Ltd 2015

17
9.0 ErP Information
9.2 Package Fiche - Boilers
Package fiche for boilers indicating the space heating energy efficiency of the package
AD-3000743-01
%
1
‘I’
2
%+
3
%( - ‘I’ ) x 0.1 = ±
4
%(‘III’ x + ‘IV’ x ) x 0.9 x ( /100) x = +
(1)
A* = 0.95, A = 0.91,
B = 0.86, C = 0.83,
D - G = 0.81
5
%( - ‘I’ ) x ‘II’ = +
6
%0.5 x 0.5 x = -
54
<30%
G F E D C B A A
+A ++ A +++
%+ (50 x ‘II’) =
7
7
%
ecivedralosfoehcfimorf
pmuptaehyratnemelppuSDNAnoitubirtnocraloS
noitubirtnocraloS
dellatsniecnoycneicfifeygrenelautcastiotdnopserroctonyamehcfisihtnirofdedivorpstcudorpfoegakcapehtfoycneicfifeygreneehT
in a building, as this efficiency is influenced by further factors such as heat loss in the distribution system and the dimensioning of the
products in relation to building size and characteristics.
?C°53tasrettimetaeherutarepmetwolhtiwdellatsnipmuptaehyratnemelppusdnarelioB
egakcap
fossalcycneicfifeygrenegnitaehecapslanosaeS
egakcapfoycneicfifeygrenegnitaehecapslanosae
S
RO
)%ni(ycneicfifeygrenegnitaehecapslanosaeS
pmuptaehyratnemelppuS
gnitarknaT
ni(ycneicfiferotcelloC
%)
)³mni(emulovknaT)²mni(ezisrotcelloC
)%ni(ycneicfifey
grenegnitaehecapslanosaeS
reliobyratnemelppuS
,%5.1=IIIssalC,%2=IIssalC,%1=IssalC
Class IV = 2%, Class V = 3%, Class VI = 4%,
Class VII = 3.5%, Class VIII = 5%
lortnocerutarepmeT
reliobfoycneicfifeygrenegnitaehecapslanosaeS
59.0esu,AevobasignitarknatfI)1(
eulavrellamstceles
pmuptaehfoehcfimorf
pmuptaehfoehcfimorf
reliobfoehcfimorf
lortnocer
utarepmetfoehcfimorf
I
I
The value of the seasonal space heating energy efficiency of the
preferential space heater, expressed in %.
II
The factor for weighting the heat output of preferential and supple
mentary heaters of a package as set out in the following table.
© Baxi Heating UK Ltd 2015

18
9.0 ErP Information
9.2 Package Fiche - Boilers (cont)
Package efficiency
Temperature control X
Potterton Promax 24 Store ErP
%
Temperature control Y %
The value of the mathematical expression: 294/(11 ʷPrated),
whereby ‘Prated’ is related to the preferential space heater.
The value of the mathematical expression 115/(11 ʷPrated),
whereby ‘Prated’ is related to the preferential space heater.
Weighting of boilers
00 0
0.1 0.3 0.37
0.2 0.55 0.70
0.3 0.75 0.85
0.4 0.85 0.94
0.5 0.95 0.98
0.6 0.98 1.00
≥ 0.7 1.00 1.00
(1) The intermediate values are calculated by linear interpolation between the two adjacent values.
(2) Prated is related to the preferential space heater or combination heater.
III
IV
I
V
Psup / (Prated + Psup)(1)(2) II, package without hot water storage tank II, package with hot water storage tank
90 150115
© Baxi Heating UK Ltd 2015

19
9.0 ErP Information
9.3 Package Fiche - Combination Heaters
(Boilers or Heat Pumps)
Package fiche for combination heaters (boilers or heat pumps) indicating the water heating energy efficiency of the
package
AD-3000747-01
%
1
‘I’
2
%(1.1 x ‘I’ - 10%) x ‘II’ - - ‘I’ = +
‘III’
<28%
XXL
XL
L
M
G F E D C B A A
+A ++ A +++
3
%
%+ 0.4 x =
23
%- 0.2 x =
23
dellatsniecnoycneicfifeygrenelautcastiotdnopserroctonyamehcfisihtnirofdedivorpstcudorpfoegakcapehtfoycneicfifeygreneehT
in a building, as this efficiency is influenced by further factors such as heat loss in the distribution system and the dimensioning of the
products in relation to building size and characteristics.
etamilcegarevarednuegakcapfossalcycneicfifeygrenegnitaehretaW
etamilcegarevarednuegakc
apfoycneicfifeygrenegnitaehretaW
yticirtceleyrailixuA
noitubirtnocraloS
retaehnoitanibmocfoycneicfifeygrenegnitaehretaW
ecivedralosfoehcfimorf
:redloC
:remraW
snoitidnocetamilcremrawdnaredlocrednuycneicfifeygrenegnitaehretaW
:elfiorpdaolderalceD
I
I
The value of the water heating energy efficiency of the combination
heater, expressed in %.
II
The value of the mathematical expression (220 ʷQref)/Qnonsol,
where Qref is taken from Regulation EU 811/2013, Annex VII Table
15 and Qnonsol from the product fiche of the solar device for the de
clared load profile M, L, XL or XXL of the combination heater.
III
The value of the mathematical expression (Qaux ʷ2,5)/(220 ʷQref),
expressed in %, where Qaux is taken from the product fiche of the
solar device and Qref from Regulation EU 811/2013, Annex VII Ta
ble 15 for the declared load profile M, L, XL or XXL.
© Baxi Heating UK Ltd 2015

20
10.0 Notes