Baxi Combi 80 Eco Operation instructions

Baxi Combi 80Eco
Gas Fired Wall Mounted Combination Boiler
User’s Operating
Instructions
Please keep these instructions safe.
Should you move house, please hand
them over to the next occupier.

2
Baxi UK Limited is one of the leading manufacturers
of domestic heating products in the UK.
Our first priority is to give a high quality service to our
customers. Quality is designed into every Baxi product
- products which fulfil the demands and needs of
customers, offering choice, efficiency and reliability.
To keep ahead of changing trends, we have made a
commitment to develop new ideas using the
latest technology - with the aim of continuing to
make the products that customers want to buy.
Everyone who works at Baxi has a commitment to
quality because we know that satisfied customers
mean continued success.
We hope you get a satisfactory service from Baxi. If
not, please let us know.
Natural Gas
Baxi Combi 80Eco
G.C.No47 075 05
Baxi is a BS-EN ISO 9001
Accredited Company
The boiler meets the requirements of Statutory Instrument
“ The Boiler (Efficiency) Regulations 1993 No3083” and is
deemed to meet the requirements of Directive 92/42/EEC
on the energy efficiency requirements for new hot water
boilers fired with liquid or gaseous fuels:-
Type test for purpose of Regulation 5 certified by:
Notified Body 0051.
Product/Production certified by:
Notified Body 0051.
For GB/IE only.
Where fitted, user label for
optional timer to be applied here.

1.0 Warnings
3
1.1 Safe Installation
1. The appliance is suitable for installation only in
G.B. and I.E. and should be installed in
accordance with the rules in force. For Ireland
install in accordance with I.S.813 “INSTALLATION
OF GAS APPLIANCES”. The installation must be
carried out by a CORGI Registered Installer or
other registered competent person and be in
accordance with the relevant requirements of GAS
SAFETY (Installation and Use) REGULATIONS most
recent edition, the BUILDING REGULATIONS issued
by the Department of the Environment, BUILDING
STANDARDS (Scotland) (Consolidation)
REGULATIONS issued by the Scottish Development
Department and the LOCAL BUILDING
REGULATIONS.Where no specific instructions are
given, reference should be made to the relevant
BRITISH STANDARD CODES OF PRACTICE
and INSTALLATION SPECIFICATIONS.
2. This appliance must be installed in
accordance with the manufacturer’s instructions
and the rules in force, and only used in a suitably
ventilated location.
3. Read the instructions before installing or
using this appliance.
4. Any purpose provided ventilation should be
checked periodically to ensure that it is free from
obstruction.
IMPORTANT - The addition of anything that
may interfere with the normal operation of the
appliance without the express written
permission of Baxi UK Limited could invalidate
the appliance warranty and infringe the GAS
SAFETY (Installation and Use) REGULATIONS.
1.2 In case of gas leaks
1. If a gas leak is found or suspected, turn off the
gas supply at the meter immediately and at the
isolating valve on the boiler if possible. Contact your
Installer or Transco (under 'Gas' in the phone
directory).
1.3 Servicing your Appliance
1. For reasons of safety and economy your
appliance should be serviced annually. Servicing
must be performed by a competent person. Your
Installer or British Gas Service will be able to advise
you.
1.4 Electricity Supply
1. THIS APPLIANCE MUST BE EARTHED.
2. A standard 230V ~ 50Hzsupply is required. The
appliance must be protected by a 3 amp fuse.
Never Hang Flammable Items Over The
Appliance
STANDARD
B.S. 6891
B.S. 5440: Pt 1
B.S. 5440: Pt 2
B.S. 5546
B.S. 7074
B.S. 5449
B.S. 6798
SCOPE
Gas Installation.
Flues.
Air Supply.
Installation of hot water supplies
for domestic purposes.
Expansion vessels and ancillary
equipment for sealed water systems.
Forced circulation hot water systems.
Installation of gas fired hot water
boilers.
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. Turn off the electrical supply and turn the selector switch on
the facia box to the OFF position.
2. Using a suitable open ended spanner or screwdriver turn the
square on the gas tap to the left to isolate the gas supply at the
boiler (Fig. 1).
3. The isolating valves are positioned under the boiler and can be
closed by turning their taps to the right towards the wall (Fig. 2).
4. Call your Service Engineer as soon as possible.
“Benchmark”Installation, Commissioning and Service
Record Log Book
Please ensure that your installer has completed the Installation and
Commissioning sections of the Log Book and hands the Log Book
over. The details of the Log Book will be required in the event of
any warranty work. Keep the Log Book in a safe place and ensure
that the relevant sections are completed at each subsequent
regular service visit.
Gas Tap
Heating Flow, Heating
Return and Mains
Water Inlet
Isolating Valves
Fig. 1
Fig. 2
All CORGI registered installers carry a CORGI identification card
and have a registration number. Both should be recorded in your
boiler Log Book. You can check your installer is registered by
telephoning 01256 372300 or writing to:-
1 Elmwood,
Chineham Business Park,
Crockford Lane,
Basingstoke,
RG24 8WG

2.0 Operating the Boiler
4
2.1 Introduction
1. Your Baxi Combi 80Eco is a gas fired, room
sealed, powered flue combination boiler, providing
central heating for your home and mains fed
domestic hot water to taps and shower. It is fully
automatic and does not have a pilot light.
2. Priority is given to the hot water mode - when a
hot water tap is turned on the supply of heat to the
central heating circuit is interrupted.
2.2 Operating the Boiler
1. Ensure that the electricity and gas supplies are
turned on. Check that the central heating pressure
is between 0.5 and 1.0 bar (Fig. 3).
2. Turn the On/Off/Reset selector switch either
anti-clockwise from the off position (Fig. 5) to both
central heating and domestic hot water or
clockwise to domestic hot water only.
3. In either position the green power on neon
( ) will illuminate (Fig. 4).
4. Position (i) In this position the central heating
will operate according to demand or provide
domestic hot water when a tap or shower is turned
on (Fig. 6). Priority is given to domestic hot water.
5. Position (ii) In this position hot water will be
provided when a tap or shower is turned on
(Fig. 7).
6. The boiler will light automatically on demand.
7. The orange burner on neon ( ) will illuminate
when the boiler is operating and the main burner is
on (Fig. 4).
IMPORTANT: When the selector switch is in
the ‘0’(Off) position the electrical supply to the
boiler is isolated. The boiler will not operate and
the integral timer (if fitted) will require resetting
once the selector switch is set to either the
Position (i) or Position (ii).
2
1
0
4
3
bar
Position (i)
(Central Heating or Hot Water)
Position (ii)
(Hot Water)
Fig. 6
Fig. 7
OFF Position Fig. 5
Fig. 4
Fig. 3
1. On/Off/Reset Selector Switch
2. Burner On Neon
3. Power On Neon
4. Flame Failure Neon
5. Central Heating Temperature Control
6. Hot Water Temperature Control
7. Central Heating System Pressure Gauge
8. Optional Integral Timer Position
12 34 5 6 7 8
2
1
0
4
3
bar

2.0 Operating the Boiler
5
2.3 Temperature Control
1. Central Heating: The central heating hot water
flow temperature can be adjusted between 30°C
(± 5°C) minimum and 85°C (± 5°C) maximum.
2. Turn the control knob clockwise to increase the
temperature (Fig. 8).
3. In normal winter usage we recommend that the
central heating temperature be set at maximum.
4. Domestic Hot Water: The temperature of the
domestic hot water can be adjusted by turning the
control knob clockwise to increase up to a
maximum of 65°C (Fig. 9).
5. The temperature of the water is also dependent
on the water flow rate and the temperature of the
mains water coming into the house.
6. By slightly reducing the flow from the tap the
temperature will increase up to the maximum if
required.
7. The flow rate can be reduced down to as low
as 2.5 litre/min. The boiler will still recognise the
need to heat the water.
2.4 Safety Thermostat
1. Your Baxi Combi 80Eco is fitted with an
additional safety device, which shuts down the
boiler in the event of the system or the boiler
overheating.
2. If the device operates, the boiler will shut down.
To reset: Contact your Service Engineer - the
reset button is inside the appliance and resetting
by the user should not be attempted.
3. The cause of operation of the safety thermostat
should be determined by your Service Engineer.
2.5 Flame Failure Reset
1. The red flame failure neon ( ) will illuminate
in the event of the burner failing to light, or when
incomplete lighting of the burner occurs (Fig. 11).
2. Turn the selector switch fully anti-clockwise
against the spring pressure to the reset position
(R) and release (Fig. 10). Set the selector switch
to the required position to light the boiler.
3. If the flame failure neon illuminates repeatedly
a fault is indicated. Your Service Engineer should
be contacted as soon as possible.
Domestic Hot Water
Temperature Control
Fig. 8
Fig. 11
Central Heating
Temperature Control
Fig. 9
Reset Position
Flame Failure Light
Fig. 10

2.0 Operating the Boiler
6
2.6 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 between 0.5
and 1.0 bar. During operation the pressure
should not exceed 2.5 bar, and will normally be
between 1.0 and 2.0 (Figs. 12 & 13).
3. A pressure of 3 or greater indicates a fault.
The safety pressure relief valve will operate, at a
pressure of 3 (Fig. 14). It is important that your
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. 15).
5. The system must be re-pressurised by your
Service Engineer.
2.7 To Shut Off the Boiler
1. For short periods: Turn the selector switch to
the Off position (Fig. 16).
2. For long periods: Turn off the selector switch
(Fig. 16), electricity and gas supplies.
If your home is to be left unoccupied for long
periods during cold weather the boiler and
whole system should be drained unless
equipped with frost protection.
3. Your installer will advise you about frost
protection and draining the system.
IMPORTANT: When the selector switch is in
the ‘0’(Off) position the electrical supply to the
boiler is isolated. The boiler will not operate
and the integral timer (if fitted) will require
resetting once the selector switch is set to
either the Position (i) or Position (ii).
2
1
0
4
3
bar
2
1
0
4
3
bar
2
1
0
4
3
bar
2
1
0
4
3
bar
ON/OFF/RESET
Selector Switch
OFF Position
Fig. 16
Fig. 20
Fig. 18
Normal Pressure (when cold)
Normal Pressure (operating)
Fig. 12
Fault
Fig. 13
Below Minimum
Fig. 14
Fig. 15
Pressure Gauge

3.0 Clearances and Check List
7
3.1 Clearances around the Boiler
(Figs. 17 & 18)
1. The minimum clear spaces needed around
the boiler measured from the casing are as
follows:
Top - 200mm
Bottom - 200mm
Both sides - 5mm
Front - 5mm (In Operation)
- 450mm (For Servicing)
2. These areas must not be obstructed in any
way. Blocking the clearance spaces may
result in the boiler overheating and damage
may occur.
3. The gas burning compartment of your boiler is
completely sealed from the room in which it is
fitted. Products from the combustion of gas are
vented to the outside through the flue terminal
which must be kept free from obstruction as this
would interfere with the correct operation of the
boiler.
4. The boiler may be installed in a cupboard if
these minimum clearances are kept. The
compartment should be large enough to house
the boiler and ancillary equipment only.
5. IT SHOULD NOT BE USED AS A STORAGE
CUPBOARD.
3.2 Check List
1. If a fault develops, or is suspected, call your
Service Engineer as soon as possible.
2. Go through the following check list before you
make contact.
a) Is the electricity supply on ?
b) Is the selector switch on (giving a green
“Power ON”light) and set for both Central
Heating and Domestic Hot Water ?
c) Is the red “Flame Failure”indicator lit ?
Turn the On/Off/Reset selector fully anti-
clockwise.
d) Is the gas supply on ?
e) Is the mains water supply turned on ?
f) Is the system pressure correct ?
g) Are the boiler temperature controls set high
enough ?
h) Is the time clock (if fitted) calling for central
heating ?
i) Is the room thermostat (if fitted) set high
enough ?
j) Are the radiator valves open ?
200mm Min
780mm
450mm
200mm Min
5mm Min
5mm Min
5mm Min
450mm Min
For Servicing
Purposes
Fig. 17
Fig. 18
5mm both sides
recommended for
ease of installation
and service.
In Operation

4.0 Cleaning, Spares & Guarantee
8
4.1 Cleaning the Outercase
The painted panels should be wiped with a damp
cloth and then dried completely. DO NOT USE
ABRASIVE CLEANING AGENTS.
4.2 Spare Parts
IMPORTANT - Only a competant person
should be used to service or repair this boiler.
1. Any repairs to the boiler will usually be the
responsibility of the Installer during the
guarantee period after which spare parts may be
obtained through approved Baxi stockists if
required.
2. Quote the appliance name, model number
and where possible the part number when
ordering spares. A parts list is included in the
Installation and Servicing Instructions.
3. The name, model number, and serial number
can be found on a label on the inner face of the
lower right hand case panel (Fig 19).
4.3 Guarantee
1. Your Baxi Combi 80Eco is designed and
produced to meet all the relevant Standards.
2. Baxi UK Limited provide a 12 month
guarantee on the boiler. The guarantee operates
from the date installation is completed for the
customer who is the original user.
3. To maximise the benefit from our guarantee
we urge you to return the reply-paid guarantee
registration.
4. This does not in any way prejudice your rights
at Common Law. Such rights between the
customer and the installer or supplier from whom
the unit was purchased remain intact.
Any component or part which becomes
defective during the guarantee period as a
result of faulty workmanship or material
whilst in normal use will be repaired or
replaced free of charge.
Information Label
Fig. 19

5.0 Notes
9

5.0 Notes
10

11
Baxi UK Limited manufacture a comprehensive range
of products for the domestic heating market.
Gas Central Heating Boilers
(Wall, Floor and Fireside models).
Independent Gas Fires.
Renewal Firefronts.
Gas Wall Heaters.
Solid Fuel Fires.
If you require information on any of these products,
please write, telephone or fax to the Sales Department.

Baxi UK Limited
Brownedge Road
Bamber Bridge Preston
Lancashire
PR5 6SN
www.baxi.com
After Sales Service
08706 096 096
Comp No247937 - Iss 3 - 6/01
921.647.1