You can rely on
User Guide and
Promax Combi
Important Warranty Information
HE Plus A
Range
Condensing
Combination Boiler
Please keep these instructions in a safe place.
If you move house, please hand them over to
the next occupier.
© Baxi Heating UK Ltd 2012
1.0 Quick Reference Guide
2
Reset
1
3
0
4
bar
ON/OFF/Reset
Selector Switch
Display
Central Heating
Temperature Control
Domestic Hot Water
Temperature Control
System Pressure Gauge
Position of
Optional Timer
Reset
Reset
Reset
Reset
OFF Position
The boiler will not operate.
Central Heating & Hot Water
Both Heating & Hot Water will operate.
Domestic Hot Water
Hot Water will operate.
Reset
Hold for approx 5 seconds and release.
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.
Display
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.
2
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.
1
3
0
4
bar
3
© Baxi Heating UK Ltd 2012
Boiler not working
2.0 Troubleshooting
START
Make sure the gas supply is
turned ON and check if other
gas appliances are operating
(e.g. fire, cooker).
Is the (
and the (
) or (
) on ?
) light on
YES
YES
NO
Is the ON/OFF/Reset
Select Switch in the
(
) position and
Central Heating
Indicator
the display lit ?
Domestic Hot
Water Indicator
NO
If no gas, consult your
supplier.
Reset
Burner On
Indicator
YES
Display
NO
Boiler operating satisfactorily.
Check electricity to the
boiler is switched on.
Is the Central Heating System
Pressure needle in the GREEN
section, between 1 and 2.5 bar ?
Does the display show an error
code e.g. E133, E110 ?
YES
NO
NO
2
1
3
0
4
bar
YES
If the reading falls below 1 bar
repressurise the system as
described in section 3.1.
Turn the ON/OFF/Reset
Selector Switch to Reset.
If boiler does not
Reset
Reset
Error Code E119 showing low
pressure.
4
© Baxi Heating UK Ltd 2012
2.0 Troubleshooting
Is the Timer ON and calling for
heat ?
Is the Room Thermostat (if
fitted) set high enough ?
YES
YES
12
15
6
Typical
examples of
external timer
CH OFF
CH ON
NO
Turn Room Thermostat to
maximum setting (typical
example shown).
NO
Ensure timer is set for Central
Heating ON (see any
instructions supplied with
timer).
15
CONTACTYOUR
INSTALLER OR
SERVICE ENGINEER.
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.
5
© Baxi Heating UK Ltd 2012
3.0 Repressurising System
2
3.1
Central Heating System Pressure
1
3
1. The water pressure in the central heating system is
indicated by the pressure gauge.
4
0
bar
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 2.0 (Fig. 1).
Fig. 1
Normal Pressure
2
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.
1
3
4
0
bar
Fig. 2
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.
Requires
Repressurising
2
1
3
3.2
To Re-Pressurise the System
4
0
(Optional Filling Loop)
bar
1. The procedure is for the optional filling loop kit when
fitted. However, even if your boiler has an external loop, the
principle is similar.
Fig. 3
Fault
2. Look at the boiler from underneath. There will be two taps
at the end of copper pipes, one with a blanking cap on the
end. Do not operate these taps yet.
Cap
Tap
3. Your installer will have left a metal braided hose (the ‘filling
loop’) with you for safe keeping.
Boiler Taps &
Connections, as
viewed from
underneath
Tap
4. This loop MUST be connected to the taps. Remove the
blanking cap and set aside.
5. Connect the loop to the taps with the wing nuts. These
should be hand tightened.
Wing Nut
6. Carefully open the handles on both taps and check the
boiler pressure gauge. Once the needle on the gauge is
above the 0.5 mark both taps can be closed.
7. Undo the two wing nuts, remove the loop and refit the
blanking cap. Put the loop in a safe place for future use.
Loop Connected
6
© Baxi Heating UK Ltd 2012
4.0 Clearances
4.1
For your Safety
450mm
5mm Min
5mm Min
1. This appliance must have been installed in accordance
with the manufacturer’s instructions and the regulations
in force.
200mm Min
(300mm Min if
using 80/125mm
flueing system)
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.
780mm
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
- 200mm
Bottom
Left side
Right Side
Front
- 150mm
- 5mm
- 5mm
- 5mm (In Operation)
- 450mm (For Servicing)
150mm Min*
*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.
450mm Min
For Servicing
Purposes
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.
5mm Min
Fig. 4
In Operation
7
© Baxi Heating UK Ltd 2012
5.0 Care of the Boiler
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
Reset
1
3
0
4
bar
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'.
Display
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.
Then
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.
Fig. 5
Table of Error Codes
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.
E20
Central Heating NTC Fault
Flue NTC Fault
E28
E50
Hot Water NTC Fault
E110
E119
E125
E130
E133
E160
Safety Thermostat Operated
Water Pressure Switch Not Operated
Circulation Fault (Primary Circuit)
Flue NTC Operated
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.
Interruption Of Gas Supply or Flame Failure
Fan or Fan Wiring Fault
8
© Baxi Heating UK Ltd 2012
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”.
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
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 Benchmark Checklist may be required in the event of
any warranty work.
9
© Baxi Heating UK Ltd 2012
7.0 Notes
10
© Baxi Heating UK Ltd 2012
8.0 Emergency
Warning !
If you smell gas
Do not operate light switches
Do not operate any electrical equipment
Do not use a telephone in the hazardous area
Extinguish any naked flame and do not smoke
Open windows and doors in the hazardous area
Turn off the gas supply at the meter
Warn any other occupants and vacate the premises
Telephone the National Gas Emergency Service on:-
0800 111 999
Faulty boiler
If it is known or suspected that a fault exists
on the boiler, it must not be used until the fault
has been corrected by a competent person.
In an Emergency
If a water or gas leak occurs or is suspected, the boiler can
be isolated at the inlet valves as follows;
1. Using a suitable open ended spanner, turn the square
nut on the gas tap through 90° (1/4 turn) to isolate the gas
supply at the boiler (Fig. 6).
Gas Tap
3. The water isolating valves are positioned under the
boiler and can be closed by turning their taps to the right
towards the wall (Fig. 6).
4. Call your Installer or Service Engineer as soon as
possible.
Fig. 6
Heating Flow, Heating
Return and Mains Water
Inlet Isolating Valves
11
© Baxi Heating UK Ltd 2012
Please complete the boxes below
9.0 Warranty & Service
Serial Number
Standard Warranty Term & Conditions
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 of Baxi Heating UK Ltd on
0800 731 1644.
Our promise to you
If you experience a fault with your new boiler, we aim to provide a safe and
high quality repair service supported by our dedicated national network of
highly skilled engineers. If your installer can’t resolve the problem for you, we
will do everything we can to get an engineer out to you as quickly as possible.
Nothing in this warranty will affect your statutory consumer rights.
Date of Installation
D
D
M M
Y
Y
What you need to do if you experience a problem with your heating system
or the operation of the boiler
Installer Details (name, address and contact number(s))
You should always contact your installer first, because the fault may not be
related to the boiler. If your installer confirms that the fault is within the boiler
it self and he/she can’t repair it, our friendly customer service team is on hand
to help. Simply call our service division heateam on 0844 871 1560 to book an
engineer visit or for any general advice that you may need. Our contact centre
is open Monday to Friday 8am - 6pm, weekends and Bank Holidays 8.30am -
2pm, excluding Christmas Day and New Years Day.
When calling heateam it would be helpful if you could have the following
information to hand:-
1
2
3
4
boiler serial number (see opposite).
boiler make and model number.
Your installer name and address details.
Proof of purchase (if you do not have the boiler serial number).
What this warranty covers
Free of charge repair or replacement of components found to be faulty from
manufacture.
Free of charge replacement of the complete unit provided always that the
failure is related to a manufacturing fault that cannot be repaired or is
uneconomic to repair.
The warranty runs for 12 months from the date your product is installed.
What this warranty does not cover
Repairs to boilers which haven’t been installed and commissioned properly,
and as set out in the installation instructions (this includes the need to flush the
system effectively and add a suitable corrosion inhibitor).
Any damage caused by hard water scale deposits and/or aggressive water
resulting from corrosion.
Any other defects or failures, either in the connected heating system or
outside of the boiler itself.
Faults caused by inadequate supply of electricity, gas or water to the property.
Installations within commercial settings for which this boiler was not designed.
Information Label
Reimbursement of any third party repair or replacement costs that we haven’t
been told about or agreed with you in advance.
All descriptions and illustrations provided in this leaflet have been carefully
prepared but we reserve the right to make changes and improvements in
our products which may affect the accuracy of the information contained in
this leaflet. All goods are sold subject to our standard Conditions of Sale
which are available on request.
Compensation for consequential losses (e.g. loss of earnings, business losses,
stress and inconvenience) arising from a production breakdown, including
repair delays caused by factors outside our reasonable control.
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 Heating UK Ltd heating experts, please call
Tel: 0844 871 1545
POTTERTON
A Trading Division of Baxi Heating UK Ltd (3879156)
Brooks House, Coventry Road, Warwick. CV34 4LL
After Sales Service 0844 871 1560 Technical Enquiries 0844 871 1555
e&oe
UK Comp No 5114443 - Iss 16 - 4/12
© Baxi Heating UK Ltd 2012
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