Baxi MainEco Combi 24 User manual

E
EcoBlue Advance Combi
User Guide
Gas Fired Wall Mounted Condensing Combination Boiler
24 - 28 - 33 - 40
en
United Kingdom
Please keep these instructions in a safe place.
If you move house, please hand them over to the next occupier.

2 EcoBlue Advance Combi 7219716 - 01 (04/15)
Dear Customer,
Thank you for purchasing this appliance.
Please read this manual carefully before using the product and keep it in a safe place for future reference.
In order to ensure continued safe and efficient operation we recommend that the product is regularly maintained. Our Service and
After Sales organization can assist with this.
We hope you will receive many years of satisfactory service.
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 Heating and Hotwater
Industry Council. For more information visit www.centralheating.co.uk
Model Range
Baxi EcoBlue Advance 24 Combi ErPD
G.C.No 47-077-14
Baxi EcoBlue Advance 28 Combi ErPD
G.C.No 47-077-15
Baxi EcoBlue Advance 33 Combi ErPD
G.C.No 47-077-16
Baxi EcoBlue Advance 40 Combi ErPD
G.C.No 47-077-17
0086
© 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 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.

EcoBlue Advance Combi 37219716 - 01 (04/15)
Contents
Contents
1 Introduction
1.1 General
1.2 Additional Documentation
1.3 Symbols Used
1.4 Abbreviations / Glossary
1.5 Extent of Liabilities
1.5.1 Manufacturer’s Liability
1.5.2 Installer’s Responsibility
1.5.3 User’s Responsibility
2 Safety
2.1 General Safety Instructions
2.2 Recommendations
2.2.1 Benchmark Commissioning Checklist
3 Technical Specifications
3.1 Technical Data
4 Description of the Product
4.1 General Description
4.2 Operating Principle
4.2.1 In Operation
4.3 Control Panel Description
4.4 Standard Delivery
4.5 Accessories & Options
4.5.1 Optional Extras
5 Operation
5.1 Operation Checking Procedure & Basic Fault Identification
5.2 Shutdown
5.3 Frost Protection
6 Settings
6.1 Setting the Boiler Temperatures
6.1.1 Boiler Temperature
6.1.2 Domestic Hot Water Temperature
6.1.3 Summer - Winter - Heating Only Mode
6.1.4 Information Display
7 Maintenance
7.1 General
7.2 Maintenance Instructions
7.3 Repressurising the System
7.4 Venting the System
7.5 Draining the System
5
5
5
5
6
6
6
7
7
8
8
9
9
10
10
11
11
11
11
12
13
13
13
14
14
16
16
17
17
17
17
17
17
18
18
18
19
20
21

4 EcoBlue Advance Combi 7219716 - 01 (04/15)
Contents
8 Troubleshooting
8.1 Error Codes
8.2 Fault Finding
9 Decommissioning
9.1 Decommissioning Procedure
10 Disposal
10.1 Disposal / Recycling
11 Environmental
11.1 Energy Saving
11.2 Room Thermostats and Settings
12 Warranty
12.1 General
12.2 Terms of Warranty
12.2.1 Standard Warranty Terms and Conditions
13 Appendix
13.1 ErP Information
13.1.1 Product Fiche - Combination Boilers
13.1.2 Package Fiche - Boilers
13.1.3 Package Fiche - Combination Heaters (Boilers or Heat Pumps)
22
22
23
24
24
24
24
25
25
25
26
26
26
26
28
28
28
29
31

EcoBlue Advance Combi 5
Introduction 1
7219716 - 01 (04/15)
1 Introduction
1.1 General
WARNING
Installation, repair and maintenance must only be
carried out only by a competent person. This
document is intended for use by competent persons,
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
This manual is intended for the user of the Baxi EcoBlue
Advance Combi boiler. If the appliance is sold or transferred, or
if the owner moves leaving the appliance behind you should
ensure that the manual is kept with the appliance for
consultation by the new owner and their installer.
The appliance is designed as a boiler for use in residential
domestic environments on a governed meter supply only. The
selection of this boiler is entirely at the owner’s risk. If the
appliance is used for purposes other than or in excess of these
specifications, the manufacturer will not accept any liability for
resulting loss, damage or injury.
The manufacturer will not accept any liability whatsoever
for loss, damage or injury arising as a result of failure to
observe the instructions for use, maintenance and
installation of the appliance.
1.2 Additional Documentation
Various timers, external controls, etc. are available as optional
extras. Full details are contained in the relevant sales literature.
1.3 Symbols Used
In these instructions, various danger levels are employed to
draw the user's attention to particular information. In so doing,
we wish to safeguard the user's safety, prevent hazards and
guarantee correct operation of the appliance.
DANGER
Risk of a dangerous situation causing serious
physical injury.
WARNING
Risk of a dangerous situation causing slight physical
injury.
CAUTION
Risk of material damage.
Signals important information .
Signals a referral to other instructions or other pages
in the instructions.

6 EcoBlue Advance Combi
1 Introduction
7219716 - 01 (04/15)
DHW: Domestic hot water
CH: Central heating
GB: Great Britain
IE: Ireland
BS: British standard
HHIC: Heating and Hotwater Industry Council
Pnc: Condensing output
1.4 Abbreviations / Glossary
1.5 Extent of Liabilities
1.5.1. Manufacturer's Liability
Our products are manufactured in compliance with the
requirements of the various european applicable Directives.
They are therefore delivered with marking and all relevant
documentation. In the interest of customers, we are
continuously endeavouring to make improvements in product
quality. All the specifications stated in this document are
therefore subject to change without notice.
The manufacturer will not accept any liability for loss, damage or
injury arising as a result of:-
Failure to abide by the instructions on using the appliance.
Failure to regularly maintain the appliance, or faulty or
inadequate maintenance of the appliance.
Failure to abide by the instructions on installing the
appliance.
This company declares that no substances harmful to
health are contained in the appliance or used during
appliance manufacture.
The appliance is suitable only for installation in GB and IE and
should be installed in accordance with the rules in force, and
only used in a suitably ventilated location.
In GB, the installation must be carried out by a Gas Safe
Registered Installer. It must be carried out in accordance with
the current and relevant requirements of legislation and
guidance.
Where no specific instructions are given, reference should be
made to the relevant British Standard Code of Practice.
In IE, the installation must be carried out by a competent Person
and installed in accordance with the current edition of I.S. 813
‘Domestic Gas Installations’, the current Building Regulations
and reference should be made to the current ETCI rules for
electrical installation.
Incorrect installation could invalidate the warranty and may lead
to prosecution.

EcoBlue Advance Combi 7
Introduction 1
7219716 - 01 (04/15)
1.5.3. User's Responsibility
To guarantee optimum operation of the installation, you must
observe the following instructions:
Read and observe the instructions given in the manuals
supplied with the appliance.
Seek the assistance of a qualified installer for the installation
and initial commissioning.
Ask the installer to explain the installation.
Have the required annual inspection and maintenance
carried out by a qualified installer and ensure the Benchmark
Service Record in the Installation Manual is completed - this
is a condition of the warranty !
Keep the manuals in good condition and near to the
appliance.
This appliance must not be used by people with a lack of
experience or knowledge, unless they are supervised by
someone familiar with the appliance or if they have been
instructed on how to operate the appliance correctly. Do not
allow children to operate or play with the appliance.
1.5.2 Installer's Responsibility
The installer is responsible for the installation and initial start up
of the appliance. The installer must adhere to the following
instructions:
Read and follow the instructions given in the manuals
provided with the appliance.
Carry out installation in compliance with the prevailing
legislation and standards.
Ensure the system is flushed and inhibitor added.
Install the flue/chimney system correctly ensuring it is
operational and complies with prevailing legislation and
standards, regardless of location of the boiler’s installation.
Only the installer should perform the initial start up and carry
out any checks necessary.
Explain the installation to the user.
Complete the Benchmark Commissioning Checklist - this is a
condition of the warranty !
Warn the user of the obligation to check the appliance and
maintain it in good working order.
Give all the instruction manuals to the user.

8 EcoBlue Advance Combi
2 Safety
7219716 - 01 (04/15)
WARNING
Do not touch flue/chimney pipes. Depending on the
settings of the appliance, the temperature of
flue/chimney pipes may exceed 60 °C.
Do not touch radiators for long periods. Depending on
the settings of the appliance, the temperature of
radiators may reach 85 °C.
Take precautions with domestic hot water. Depending
on the settings of the appliance, domestic hot water
temperature may reach 65 °C.
CAUTION
Do not neglect to service the appliance. Contact a
qualified professional or take out a maintenance
contract for the annual servicing of the appliance.
2 Safety
2.1 General Safety Instructions
ON
OFF
Water
Gas
Water If a water or gas leak occurs or is suspected, the boiler
can be isolated at the inlet valves by turning their taps
through 90° (1/4turn) downwards
For advice please contact your Installer, Annual
Service Provider or Baxi Customer Support - The
Service Division of Baxi. You can contact Baxi
Customer Support on telephone number 0344 871 1525.
When contacting Baxi Customer Support it will be useful
to have the ‘Benchmark Checklist’ at the back of the
Installation & Service Manual to hand as it includes details
relevant to the boiler and installation.
DANGER
If you smell gas:
1. Turn off the gas supply at the meter
2. Open windows and doors in the hazardous area
3. Do not operate light switches
4. Do not operate any electrical equipment
5. Do not use a telephone in the hazardous area
6. Extinguish any naked flame and do not smoke
7. Warn any other occupants and vacate the
premises
8. Telephone the National Gas Emergency Service
on:- 0800 111 999

EcoBlue Advance Combi 9
Safety 2
7219716 - 01 (04/15)
2.2 Recommendations
CAUTION
Only qualified professionals are authorised to work
on the appliance and the installation.
The appliance has an integral frost protection mode
as long as there is power to the boiler.
2.2.1 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, by the installer, 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 annually to optimise its
safety, efficiency and performance. The service engineer should
complete the relevant section of the Benchmark Service Record
in the Installation & Service manual after each service.
4. The completed Benchmark Checklist & proof of annual
servicing (where applicable) will be required in the event of any
warranty work.
Regularly check the water pressure in the system
(recommended pressure is 1.5 bar).
See section 7.4.
Keep the appliance accessible at all times.
Do not remove or cover the user information and
serial number labels affixed to the boiler control flap.
They must remain legible throughout the
lifetime of the appliance

10 EcoBlue Advance Combi
3 Technical Specifications
7219716 - 01 (04/15)
3 Technical Specifications
3.1 Technical Data
Central Heating Primary Circuit
Pressures
bar
Safety Discharge 3
Max Operating 2.5
Min Operating 0.5
Recommended Operating Range 1-2
DHW Circuit bar
Pressures
Max Operating 8
Min Operating 0.15
Flow Rates (24) (28) (33) (40)
l/min l/min l/min l/min
DHW Flow Rate
@ 35o C Rise 9.8 11.5 13.5 16.4
Min Working
DHW Flow Rate 2 2 2 2
Temperatures
C.H. Flow Temp (adjustable)
25°C to 80°C max (± 5°C)
D.H.W. Flow Temp (adjustable)
40°C to 60°C max (± 5°C)
dependent upon flow rate
Electrical Supply 230V~ 50Hz
(Appliance must be connected to an
earthed supply)
External Fuse Rating 3A
NOTE: All data in this section are nominal
values and subject to normal production
tolerances.
IMPORTANT: Where Low Flow Taps or Fittings
are intended to be used in the DHW system
connected it is strongly recommended that the
DHW flow rate DOES NOT fall below 2.5 l/min.
This will ensure reliable operation of the DHW
function.
150mm* Min
763mm
450mm
175mm Min (300mm
Min if using 80/125mm
flueing system)
5mm Min
5mm Min In
Operation
450mm Min
5mm Min
345mm
For Servicing
Purposes &
Operating the
Controls
*This is MINIMUM
recommended dimension.
Greater clearance will aid
installation and maintenance.
Electrical Protection
IPX5D (without integral timer)
IP20 (with integral timer)
Dimensions & Clearances These must be maintained in the event of
any alteration in the property, e.g. additional cupboards etc.

EcoBlue Advance Combi 11
Description of the Product 4
7219716 - 01 (04/15)
4 Description of the Product
4.1 General Description
1. The Baxi EcoBlue Advance Combi range of fully automatic
gas fired wall mounted condensing combination boilers are room
sealed and fan assisted, and will serve central heating and
mains fed domestic hot water.
2. The boiler is set to give a maximum output of :-
24 model - 24 kW DHW
21.2 kW CH Pnc (Condensing)
28 model - 28 kW DHW
25.3 kW CH Pnc (Condensing)
33 model - 33 kW DHW
29.6 kW CH Pnc (Condensing)
40 model - 40 kW DHW
33.8 kW CH Pnc (Condensing)
3. The boiler is factory set for use only on Natural Gas (G20).
4. Priority is given to domestic hot water.
6. The boiler model, serial number and Gas Council number are
also shown on the information label behind the boiler control flap
(Fig. 1). This is for user reference.
The boiler can be set in 3 operating modes:- ‘Summer’
(DHW only), ‘Winter’ (CH & DHW) or ‘Heating Only’ (CH only) by
use of the button - see section 6.1.
Fig. 1
Boiler Control
Flap
4.2 Operating Principle
4.2.1 In Operation
1. Whilst the boiler is in operation cooled flue gases are
discharged through the flue gas discharge pipe. This may
appear as a cloud of steam which is normal.
2. Condensed water is discharged from the boiler heat
exchanger into a pipe (the condensate drain). This pipe must
never be altered or re-routed except by a qualified professional.
User Label
Serial Number
Label

12 EcoBlue Advance Combi
4 Description of the Product
7219716 - 01 (04/15)
4.3 Control Panel Description
/R
/P
++
R
R
R
DHW and CH OFF (frost protection still enabled)
See Section 5.2 for information
Indicates an error that prevents burner from igniting
Error - Not resettable by user
Water pressure too low
Indicates an error resettable by the user
Generic error
Burner lit
DHW mode (symbol will flash with demand)
Heating mode (symbol will flash with demand)
Units for temperature
Units for pressure
Service due
Display Description
Central Heating (CH)
Temperature Adjustment
Boiler Information View Standby - Reset - Esc RStandby - Reset - Esc Button
Boiler Information View Button
Increase CH Temperature Button
Decrease CH Temperature Button
Increase DHW Temperature Button
Decrease DHW Temperature Button
Summer / Winter / Only Heating Mode Button
Key to Controls
Display showing all available characters
Summer - Winter - Heating Only
Mode
Domestic Hot Water (DHW)
Temperature Adjustment
Summer - DHW only mode
Winter - DHW & CH mode
Heating Only - Only CH mode
R

EcoBlue Advance Combi 13
Description of the Product 4
7219716 - 01 (04/15)
4.4 Standard Delivery
4.5 Accessories & Options
1. The literature pack contains:
Literature pack
• Installation & Servicing Manual (including ‘Benchmark’)
• User Guide Instructions
• Flue Accessories & Fitting Guide
• Registration Card
• Fernox Leaflet
• Wall Template
• Product Leaflet
• Package Leaflet
4.5.1 Optional Extras
1. Various timers, external controls, etc. are available as optional
extras.
Outdoor Sensor - Wired
Mechanical Thermostat
Mechanical Timer (24 hr) - Plug-in
Digital Timer (7 day) - Plug-in
Single Channel Timer - Wired
Two Channel Timer - Wired
RF Digital Programmable Room Unit - Wireless
RF Mechanical Programmable Room Unit - Wireless
Condensate Discharge Pump and Pipe ‘Trace Heating’
Flue Accessories (elbows, extensions, clamps etc.)
(refer to the Flue Accessories & Fitting Guide supplied
in the literature pack.)
Remote relief valve kit
Boiler discharge pump
1M Condensate Drain Pipe ‘Trace Heating’ Element
2M Condensate Drain Pipe ‘Trace Heating’ Element
3M Condensate Drain Pipe ‘Trace Heating’ Element
5M Condensate Drain Pipe ‘Trace Heating’ Element
Any of the above MUST be fitted ONLY by a qualified competent
person. Further details can be found in the relevant sales
literature and at www.baxi.co.uk

14 EcoBlue Advance Combi
5 Operation
7219716 - 01 (04/15)
START
Is there electricity to the
boiler ? Is the display lit ?
R
Check electrical supply to
boiler is switched on.
NO
YES Is the Burner Flame
showing.
R
Burner Flame
(Indicates burner
is on)
Boiler operating
satisfactorily.
NO
YES
YES
Is the Timer ON and
calling for heat ?
Is the Room Thermostat (if
fitted) set high enough ?
12
1
2
3
4
5
6
7
8
9
10
11
Typical
examples of
external timer
Ensure timer is set for
Central Heating ON (see
any instructions supplied
with timer)
NO
YES YES
NO
15
10
5
20
25
15
10
5
20
25
Turn Room Thermostat
to maximum setting
(typical example shown)
CH ON CH OFF
bar
0
1
2
3
4
Is the Central Heating
System Pressure
between 0.7 and 2.5 bar ?
If the reading* falls below 0.7
bar repressurise the system
as described in section 7.4.
NO
R
Error Code 118 showing
low pressure.
YES
IMPORTANT: Where Low Flow Taps or Fittings
are intended to be used in the DHW system
connected it is strongly recommended that the
DHW flow rate DOES NOT fall below 2.5 l/min.
This will ensure reliable operation of the DHW
function.
5.1 Operation Checking Procedure & Basic Fault Identification
Make sure the gas
supply is turned ON
and check if other
gas appliances are
operating (e.g. fire,
cooker). If the
property has a
prepayment meter
ensure it has
sufficient credit.
NO
If no gas, consult
your supplier.
5 Operation

EcoBlue Advance Combi 15
Operation 5
7219716 - 01 (04/15)
YES Is the E and R symbol
illuminated or flashing ?
R
/R
/P
++
R
R
YES
Press the Reset Button
Error
Symbol
Reset Button
If it does
not reset
CONTACT
YOUR
INSTALLER OR
SERVICE
ENGINEER.
R
Reset
Symbol
Is the Spanner symbol
illuminated or flashing ?
YES
Spanner
Symbol
Error
Code
Flame
Failure
OR
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
*To display the water pressure
press until is shown.
will alternate with the system
pressure.
(NOTE: When the pump is running
the gauge under the boiler may
show a slightly different reading to
the display)

16 EcoBlue Advance Combi
5 Operation
7219716 - 01 (04/15)
5.2 Shutdown
5.3 Frost Protection
1. The boiler incorporates an integral frost protection feature that
will operate in both Central Heating and Domestic Hot Water
modes, and also when in standby ( displayed).
2. If the boiler temperature falls below 5°C, then the boiler will
operate until the water temperature has been raised.
3. Further protection may be required for the system. Consult
your installer for details.
1. If it is anticipated that the boiler will not be used for a long
period or the property is to be unoccupied it is recommended
that the system drained if the electricity & gas supplies are to be
turned off. Your installer will be able to offer advice.

EcoBlue Advance Combi 17
Settings 6
7219716 - 01 (04/15)
6 Settings
6.1 Setting the Boiler Temperatures
6.1.1 Boiler Temperature
To increase or decrease the boiler temperature:-
1. Press to increase the Central Heating temperature.*
2. Press to decrease the Central Heating temperature.*
R
/R
/P
++
R
R
Central Heating
Temperature
Adjustment
Display Screen
Domestic Hot Water
Temperature
Adjustment
R
Summer - Winter - Heating
Only Mode
6.1.4 Information Display
1. The table opposite shows information that can be displayed
by pressing the button.
2. Depending upon boiler model and any system controls
connected to the appliance, not all information codes will be
displayed and some that are will not have a value.
3. Press to return to the normal display.
R
Button Button
R
6.1.2 Domestic Hot Water Temperature
To adjust the domestic hot water temperature:-
1. Press to increase the Domestic Hot Water temperature.
2. Press to decrease the Domestic Hot Water temperature.
6.1.3 Summer - Winter - Heating Only Mode
1. Press button until the required mode appears:-
In Heating Only mode Domestic Hot Water will NOT be
supplied when a hot tap is opened.
See 6.1.1 or 6.1.2 to set the required temperature.
Summer - Domestic Hot Water only mode
Winter - Domestic Hot Water & Central
Heating mode
Heating Only - Only Central Heating mode
Boiler Central Heating
Selected Temperature
Displayed*
Domestic Hot Water
Selected Temperature
Displayed
If and are pressed together P02 will
be displayed. Pressing either button again will scroll
through the display and P26 & P64 will be shown.
Press to return to normal display.
The values displayed are the temperature as measured
at the boiler, not necessarily that at the radiator or tap.
Because of differences in systems, seasonal variations
in mains water temperature etc. some adjustment of the
temperatures may be required to achieve the desired
results. Your installer will be able to offer advice.
*Where Outdoor Sensor fitted
If the control system includes an Outdoor Sensor the
temperature display and Central Heating buttons perform
different functions than those described.
Display - This shows a simulated room temperature set
point, NOT the boiler temperature.
Buttons - They will alter the displayed temperature, and
for optimum use should be used to change the displayed
temperature to the same as selected on the room
thermostat.
By selecting a temperature different to the room
thermostat altered comfort levels will be achieved. Your
installer will be able to offer advice.

18 EcoBlue Advance Combi
7 Maintenance
7219716 - 01 (04/15)
7 Maintenance
7.1 General
CAUTION
Maintenance operations must be performed by a
qualified competent person.
Use only genuine spare parts.
Taking out a maintenance contract is recommended.
2. The painted panels should be wiped with a damp cloth and
then dried completely. DO NOT USE ABRASIVE CLEANING
AGENTS.
1. The central heating installation should be checked regularly.
Proceed as follows:
• Check the water pressure in the central heating installation.
If the water pressure is lower than 0.7 bar, the water
must be topped up. If necessary: top up the CH system
(recommended water pressure between 1 and 1.5 bar
when system is cold).
• Check radiators for leaks and (especially in damp areas) for
rust.
• Open and close the radiator valves several times a year to
ensure they can still be rotated.
• Only clean the outside of the boiler with a damp cloth. Do not
use abrasive cleaning agents.
7.2 Maintenance Instructions
CAUTION
Only a qualified installer may clean the inside of the
boiler.
1. The boiler does not require any special maintenance.
However, the boiler must be serviced annually in accordance
with the Installation and Service Manual and the relevant
section of the Benchmark Service Record completed in order to
maintain the warranty.

EcoBlue Advance Combi 19
Maintenance 7
7219716 - 01 (04/15)
7.3 Re-pressurising the System
1. If the water pressure is too low, the installation must be
re-pressurised.
2. The normal operating water pressure is between 1 and 2 bar.
If the pressure exceeds 3 bar the safety pressure valve will
operate and a fault is indicated (E117 displayed). Contact your
installer.
3. It may be necessary to repressurise the system occasionally
(when the water pressure falls below 0.7 or E118 displayed). A
filling device (the filling loop) will be fitted on the system. This
will be on the boiler itself, or on pipework near to the boiler.
If the water pressure requires regular re-pressurising a
fault or leak is indicated. Seek advice from your installer.
4. If you are unsure of its position, or cannot identify it, consult
the installer who fitted the boiler.
5. The filling loop consists of two isolating taps and a separate
filling pipe with connection fittings.
6. Only when repressurising should the filling pipe be connected
between the two taps. Ensure that the nuts on the pipe ends
are tightened onto the taps.
7. Fully open one of the taps first, and then while watching the
pressure gauge, carefully open the second tap.
8. The system pressure is shown at all times on the pressure
gauge and can be viewed on the display when there is power to
the boiler.
9. To check the water pressure on the boiler display press
until is shown. This will alternate with the system
pressure. (When the pump is running the pressure gauge may
show a slightly different reading to the display).
10. When the figures on the display or needle on the pressure
gauge indicate between 1 and 1.5 bar turn both taps off.
11. Disconnect the filling pipe from the taps (a small amount of
water may be present) and remove it. Keep the pipe in a safe
place for future use.
12. If blanking caps are available fit them to the taps.
Go to the ‘How to videos’ section of the ‘Information &
advice’ page at www.baxi.co.uk for further details.
13. When the correct pressure is restored the boiler will reset
automatically.
bar
0
1
2
3
4
bar
0
1
2
3
4
Normal Pressure
Requires
Repressurising
Pressure Gauge
Pipe Fitted For
Repressurising
(Remove after use !)
Tap In Open
Position
Tap In Open
Position

20 EcoBlue Advance Combi
7 Maintenance
7219716 - 01 (04/15)
7.4 Venting the System
1. If any air is present in the appliance or system it must be
removed in order to prevent nuisance noises that may occur
during heating or when drawing off hot water. Proceed as
follows:
1. Open the valves of all the radiators connected to the
system.
2. Set the room thermostat to the highest possible
temperature and any timers to ‘ON’.
3. Wait until the radiators are warm.
4. Switch off the boiler.
5. Vent the radiators. Work from the lowest radiator in the
property.
6. Open the bleed vent with the key, keeping a cloth
pressed against the vent.
7. Wait until water comes out of the bleed vent and then
close.
WARNING
The CH water in the radiators will still be hot.
8. Switch the boiler on.
9. After venting, check that the water pressure in the
system is still adequate.
If the water pressure is lower than 0.7 bar, the water
must be topped up. If necessary repressurise the system
(recommended pressure between 1 and 1.5 bar when the
system is cold).
10. Reset the room thermostat to the desired temperature.
76
A
C
B
5
4
3
2
1
2
3
4
1
10