Baxi Combi 100 HE Plus Operation instructions

Baxi Bahama 100
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.
Baxi is also the largest manufacturing partnership in
the country. Everyone who works at the company has
a commitment to quality because, as shareholders, 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 Bahama 100
G.C.No47 075 02
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 0086.
Product/Production certified by:
Notified Body 0086.
For GB/IE only.

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: Pt 1
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. The isolating valves are positioned under the boiler and can be
closed using either a flat headed screwdriver or a 7mm open
ended spanner across the flats.
3. Turn the gas tap clockwise to the stop position to isolate the
gas supply at the boiler.
4. To isolate the water system, close the three valves fully by
turning clockwise.
5. Call your Service Engineer as soon as possible.
View for clarity
Pump removed for clarity
Isolating Valves
To Close The Valves
“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.

2.0 Operating the Boiler
4
2.1 Introduction
1. Your Baxi Bahama 100 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. Frost
and pump protection is a integral part of the
appliance.
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.
3. A shortened version of these operating
instructions appears on the reverse of the lower
door panel. A label gives details of the model,
serial number, G.C.Noand the manufacturer’s
name and address.
2.2 Operating the Boiler
1. Ensure that the electricity and gas supplies are
turned on.
2. Hinge down the lower door panel (Fig. 1).
3. Turn the on-off selector switch either clockwise
from the off position (Fig. 3) to both central heating
and domestic hot water or anti-clockwise to
domestic hot water only.
4. In either position the green indicator will light,
showing power on (Fig. 2).
5. Position (i) In this position hot water will be
provided when a tap or shower is turned on
(Fig. 4).
6. Position (ii) 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. 5).
7. Priority is given to domestic hot water. The
boiler control system has an automatic delay time
built in for central heating. It is normal that
following a shutdown of the boiler thermostat,
timer or roomstat, there is a delay of
approximately 3 minutes, before relighting.
8. The boiler will light automatically on demand.
9. The orange indicator will light when the boiler is
operating and the main burner is on (Fig. 2).
RESET
12
3
0
Domestic Hot Water
Temperature Control
Central Heating
Temperature Control
Pressure Gauge Optional Integral
Timer
Power ON Indicator
(Green Light)
Position (i)
(Hot Water)
Burner ON Indicator
(Orange Light)
Reset Switch
Flame Failure
Indicator (Red Light)
Position (ii)
(Central Heating
or Hot Water)
Fig. 4
Fig. 5
OFF Position Fig. 3
Fig. 2
ON/OFF
Selector Switch
Fig. 1
Lower Door Panel

2.0 Operating the Boiler
5
2.3 Temperature Control
1. Central Heating: The central heating hot water
flow temperature can be adjusted between 40°C
(± 5°C) minimum and 80°C (± 5°C) maximum.
2. Turn the control knob clockwise to increase the
temperature (Fig. 6).
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 or
anticlockwise to decrease (Fig. 7).
5. The temperature of the water is also dependent
on the water flow rate and the temperature of the
mains 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 litre/min (less than 1/2gal/min). The boiler will
still recognise the need to heat the water.
8. hinge up the lower door panel.
NOTE: Two status indicators can be seen
through the badge (Fig. 8).
The right hand symbol is the red “Flame
Failure”indicator.
The left hand symbol is the orange “Burner
ON”indicator.
2.4 Safety Thermostat
1. Your Baxi Bahama 100 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 red flame failure
indicator will light (Fig. 8) and the boiler will shut
down.
3. To reset: Press the reset switch to relight the
boiler (Fig. 9).
4. If the safety thermostat operates repeatedly,
causing flame failure and boiler shutdown, a fault
is indicated. Your Service Engineer should be
contacted as soon as possible.
RESET
Domestic Hot Water
Temperature Control
Fig. 6
Central Heating
Temperature Control
Fig. 7
Power ON Indicator
(Green Light)
Burner ON Indicator
(Orange Light)
Reset Switch
Flame Failure
Indicator (Red Light)
Fig. 8
Fig. 9

2.0 Operating the Boiler
6
2.5 Central Heating System Pressure
1. The water pressure in the central heating
system is indicated by the pressure gauge.
2. The normal operating pressure is the range
between 1 and 2·5 (Fig. 10).
3. A pressure of 3 or greater indicates a fault.
The safety pressure relief valve will operate, at a
pressure of 3 (Fig. 11). It is important that your
Service Engineer is contacted as soon as
possible.
4. The MINIMUM pressure for correct operation
is 1.
5. If the pressure falls below 1, this may indicate
a leak on the central heating system (Fig. 12).
6. The system must be re-pressurised by your
Service Engineer.
2.6 To Shut Off the Boiler
1. For short periods: Turn the selector switch to
the OFF position (Fig. 13).
2. For long periods: Turn off the selector switch
(Fig. 13), 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 left in
the frost protection mode.
3. Your installer will advise you about draining
the system.
2.7 Frost Protection Mode
1. The frost protection mode is integral to the
appliance when left in the domestic hot water and
central heating position (Fig. 14).
2. If the system temperature falls below 5°C,
then the boiler will fire on its minimum setting
until a flow temperature of 30°C is reached.
3. Further frost protection can be incorporated by
using a frost thermostat.
2.8 Pump Protection
1. The control system continually monitors the
time since the pump last operates. This will result
in the pump being run for 10 seconds every so
often to prevent seizure.
12
3
0
12
3
0
12
3
0
ON/OFF
Selector Switch
OFF Position
Fig. 13
Domestic Hot Water and
Central Heating Position
Fig. 14
Normal Pressure
Fig. 10
Fault
Fig. 11
Below Minimum
Fig. 12
Pressure Gauge

3.0 Clearances and Check List
7
3.1 Clearances around the Boiler
(Figs. 5 & 6)
1. The minimum clear spaces needed around
the boiler measured from the casing are as
follows:
Top - 200mm
Bottom - 200mm
Both sides - 5mm
Front - 500mm (For Servicing)
- 5mm (In Operation)
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. Note that
the label affixed to the front of the boiler must be
left in place to ensure future servicing is
successfully undertaken. 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 ?
Press the Reset Button.
d) Is the gas supply on ?
e) Is the mains water supply turned on ?
f) Are the boiler temperature controls set high
enough ?
g) Is the time clock (if fitted) calling for central
heating ?
h) Is the room thermostat (if fitted) set high
enough ?
i) Are the radiator valves open ?
200mm
850mm
490mm
200mm
5mm Min
5mm Min
5mm
500mm
For Servicing
Purposes
Fig. 5
Fig. 6 In Operation
50mm both sides
recommended for ease of
installation and service
100mm both sides will
be necessary when the
optional security screws
are used

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
WARNING - When ordering spare parts no
interference must be made to sealed
components. Only a CORGI registered installer
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 short parts list is included in
the Installation and Servicing Instructions.
4.3 Guarantee
1. Your Baxi Bahama 100 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.

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
The Baxi Helplines
For General Enquiries
[phone]
For After Sales Service
[phone]
For Technical Enquiries
[phone]
Comp No245527 - Iss 3 - 6/00