Baxi Fires Division 739 Assembly instructions

5113426/01
INSTALLER GUIDE
We trust that this guide gives sufficient details to enable this appliance to be installed
and maintained satisfactorily. However, if further information is required, our
Baxi Fires Division Technical Helpline will be pleased to help.
Please telephone [phone]
(National call rates apply in the United Kingdom)
In the Republic of Ireland telephone [phone]
INSTALLER: Please leave this guide with the
owner
Model
739
OPEN DECORATIVE
GAS FIRE
(GC No. 32-032-54)
THIS APPLIANCE IS FOR USE WITH NATURAL GAS (G20).
WHEN CONVERTED USING CONVERSION KIT NO. 0595211 THIS
APPLIANCE IS FOR USE WITH PROPANE GAS (G31).
THIS APPLIANCE IS SUITABLE ONLY FOR INSTALLATION IN THE UNITED
KINGDOM (GB) AND THE REPUBLIC OF IRELAND (IE).
© Baxi Heating U.K. Ltd.

Safety First.
Baxi Fires Division fires are CE Approved and designed to meet the appropriate British
Standards and Safety Marks.
Quality and Excellence.
At the heart of every Baxi Fires Division fire.
All Baxi Fires Division fires are manufactured to the highest standards of quality and
excellence and are manufactured under a BS EN ISO 9001 quality system accepted by
the British Standards Institute.
The Highest Standards
Baxi Fires Division is a member of the Society of British Gas Industries which works to
ensure high standards of safety, quality and performance.
Careful Installation
Baxi Fires Division is a CORGI registered company. All our gas fires must be
installed by a competent CORGI Registered Installer in accordance
with our Installer Guide and should not be fitted directly on to a
carpet or floor of combustible material.
Baxi Fires Division, Erdington, Birmingham B24 9QP
www.firesandstoves.co.uk
Because our policy is one of constant development and improvement, details may vary slightly from those
given in this publication
Page 2
INSTALLER GUIDE

CONTENTS
Section Page
1. SAFETY 3
2. LIST OF ACCESSORIES 4
3. APPLIANCE DATA 5
4. GENERAL INSTALLATION REQUIREMENTS 6
5. UNPACKING 13
6. INSTALLATION OF APPLIANCE 14
7. BURNER AND SUPPLY PIPE INSTALLATION 16
8. FITTING THE FIREFRONT 18
9. FITTING THE CERAMIC FUEL EFFECT 19
10. FULL OPERATING CHECKS 20
11. SERVICING & PARTS REPLACEMENT 22
11.1 Checking the aeration setting of the burner. 22
11.2 To remove the complete burner unit. 23
11.3 To remove the pilot unit. 23
11.4 To remove the gas valve. 23
11.5 To remove the piezo generator. 24
11.6 To grease the control tap. 24
11.7 To replace the burner. 24
11.8 To remove the main burner injector. 25
1. SAFETY
Installer
Before continuing any further with the installation of this appliance please read
the following guide to manual handling:
!
The lifting weight of this appliance (DGF burner) is 9 kg. One person should be
sufficient to lift the fire. If for any reason this weight is considered too heavy then
obtain assistance.
!
When lifting always keep your back straight. Bend your legs and not your back.
!Avoid twisting at the waist. It is better to reposition your feet.
!Avoid upper body/top heavy bending. Do not lean forward or sideways whilst
handling the fire.
!
Always grip with the palm of the hand. Do not use the tips of fingers for support.
!Always keep the fire as close to the body as possible. This will minimise the
cantilever action.
!Use gloves to provide additional grip.
!Always use assistance if required.
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INSTALLER GUIDE

2. LIST OF ACCESSORIES
Valor and B&Q models
Description Part Number
All Models
LPG Conversion kit 0595211
‘Quattro’ / ‘Anthem’, ‘Majestic’ and Models not supplied with a firefront
Replacement Chair brick 0552311
Replacement Chair brick Trims
! Flat Brass effect 0552321
! Flat Satin Chrome effect 0552331
! Flat Black 0552341
‘Azure’ Model
Replacement Chair brick 0552301
Wonderfire models
Wonderfire ‘Gasflame 3 Convector box’ and 16inch Wonderfire Models
Replacement Chair brick 0552311
Replacement Chair brick Trims
! Flat Brass effect 0552321
! Flat Satin Chrome effect 0552331
! Flat Black 0552341
Aspire trims with firefronts
! Satin Chrome effect 9820111
! Brass effect 9820112
! Black 9820113
! Copper effect 9820114
Bauhaus Firefront (16 inch Fret)
! Polished Brass effect 9800121
! Satin Chrome effect 9800122
! Charcoal Black 9800123
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INSTALLER GUIDE

Description Part Number
Blenheim Firefront (16 inch Fret)
! Brass effect 9800040
! Antique (Black & Brass effect) 9800075
! Chrome effect 9800076
! Black Cast Iron with Brass Finials 9800039
Blenheim Firefront (18 inch Fret)
! Brass effect 9800082
! Antique (Black & Brass effect) 9800083
! Chrome effect 9800084
! Black Cast Iron with Brass Finials 9800081
Wonderfire liberty models
Liberty Casting
! Chrome effect 0503701
! Gold effect 0503711
Liberty flue boxes
! Liberty Flue box with Gold effect Trim 0503721
! Liberty Flue box with Chrome effect Trim 0503731
3. APPLIANCE DATA
This product uses fuel effect pieces containing Refractory Ceramic Fibres (RCF),
which are man-made vitreous silicate fibres. Excessive exposure to these materials
may cause irritation to eyes, skin and respiratory tract. Consequently, it is
important to take care when handling these articles to ensure that the release of
dust is kept to a minimum. To ensure that the release of fibres from these RCF
articles is kept to a minimum, during installation and servicing we recommend that
you use a HEPA filtered vacuum to remove any dust and soot accumulated in and
around the fire before and after working on the fire. When replacing these articles
we recommend that the replaced items are not broken up, but are sealed within a
heavy duty polythene bag, clearly labelled as RCF waste. This is not classified as
“hazardous waste” and may be disposed of at a tipping site licensed for the
disposal of industrial waste. Protective clothing is not required when handling
these articles, but we recommend you follow the normal hygiene rules of not
smoking, eating or drinking in the work area and always wash your hands before
eating or drinking.This appliance does not contain any component manufactured
from asbestos or asbestos related products.
This appliance does not contain any components manufactured from asbestos or asbestos
related products.
Page 5
INSTALLER GUIDE

*When converted using kit 0595211
4. GENERAL INSTALLATION REQUIREMENTS
4.1 The installation must be in accordance with these instructions.
For the user’s protection, in the United Kingdom it is the law that all gas appliances are
installed by competent persons in accordance with the current edition of the Gas Safety
(Installation and Use) Regulations. Failure to install the appliance correctly could lead
to prosecution. The Council for the Registration of Gas Installers (CORGI) requires its
members to work to recognised standards.
In the United Kingdom the installation must also be in accordance with:
All the relevant parts of local regulations.
All relevant codes of practice.
The relevant parts of the current editions of the following British Standards:-
BS 1251
BS 4543 Part 2
BS 5440 Part 1
BS 5440 Part 2
BS 5871 Part 3
BS 6461 Part 1
BS 6891
BS 8303
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INSTALLER GUIDE
Gas Natural (G20) Propane (G31) *
Inlet Pressure 20mbar 37mbar
Input - Max. (Gross) 6.85kW (23,400 Btu/h) 6.7kW (22,860 Btu/h)
Input - Min. (Gross) 2.3kW (7,850 Btu/h) 4.0kW (13,650 Btu/h)
Burner Test Pressure (Cold) 20.0 ± 1.0mbar (8.0 ± 0.4in
w.g.)
37.0 ± 1.0 mbar (14.85 ±
0.4in w.g.)
Gas Connection 8mm pipe 8mm pipe
Burner Injector Stereomatic Cat 82 - 074 Stereomatic Size 132
Pilot & Atmosphere Sensing
Device Copreci Ref. O.D.S
21500/166
Copreci Ref. O.D.S
21500/166 Fitted with RBM
180 -02 injector
Ignition Integral Piezo Spark Integral Piezo Spark
Aeration See section 11.1 Non-adjustable

In England and Wales, the current edition of the Building Regulations issued by the
Department of the Environment and the Welsh Office. In Scotland the current edition
of the Building Standards (Scotland) Regulations issued by the Scottish Executive. In
Northern Ireland, the current edition of the Building Regulations (Northern Ireland)
issued by the Department of the Environment for Northern Ireland. In the Republic of
Ireland the installation must also conform with the relevant parts of:
The current editions of:-
IS 813 “Domestic Gas Installations”
ICP3
IS327
All relevant national and local rules in force.
Where no specific instructions are given, reference should be made to the relevant
British Standard Code of Practice.
4.2
In the United Kingdom,as supplied the appliance can be installed in the following
situations: -
For installations with the 'Liberty' casting.
! To a fireplace complete with surround and hearth as shown in figure 2 and
complying with BS1251. The required fireplace, hearth, and clearance dimensions are
shown in figure 2.
For fireplace openings having dimensions different to those shown in figure 2 refer to
Table 1 and BS 5871-Part 3 for flue sizes.
Note: The Liberty Chamber box is approved for use with a 175mm diameter flue pipe.
See BS6461 Part 1 for suitable materials. The minimum effective height of the flue
must be 3m.
For installations without the 'Liberty' casting
! To a fireplace complete with surround and hearth as shown in figure 1 and
complying with BS1251. The required fireplace, hearth, and clearance dimensions are
shown in figure 1.
Into a fireplace that has a fireback of nominal size 400mm and conforming to BS1251.
Into a Replacement Chair Brick as below: -
! ‘Quattro’, ‘Anthem’, ‘Majestic’ and models not supplied with a firefront
Into a Baxi fires division Replacement Chairbrick. Part number 0552311
! ‘Azure’ model
Into a B&Q Replacement Chairbrick. Part number 0552301
Suitable flues and minimum flue sizes are as follows: -
225mm x 225mm conventional brick flue.
175mm diameter lined brick or stone flue.
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INSTALLER GUIDE

200mm diameter factory made insulated flue manufactured to BS4543.
175mm diameter flue pipe. See BS6461 Part 1 for suitable materials.
The minimum effective height of the flue must be 3m.
The flue must not be used for any other appliance or application.
Any chimney damper or restrictor should be removed. If removal is not possible, they
must be secured in the open position.
If the appliance is intended to be installed to a chimney that was previously used for
solid fuel, the flue must be swept clean prior to installation.
All flues should be inspected for soundness and freedom from blockages.
4.3 If the fireplace opening is an underfloor draught type, it must be sealed to stop
any draughts.
4.4 The appliance must be mounted behind a non-combustible hearth (N.B.
conglomerate marble hearths are considered as non-combustible). The appliance can be
fitted to a minimum class “O” – 100°C surround. The hearth material must be at least
12mm thick. The periphery of the hearth (or fender) should be at least 50mm above
floor level to discourage the placing of carpets or rugs over it (See figure 1).
The surface of the hearth must be sufficiently flat to enable the bottom of the front
surround and the bottom front cover to be aligned horizontally. Any excessive
unevenness (uneven tiles, Cotswold stone, etc.) should be rectified.
4.4.1. 'Hole-in-the-wall' Installations
For installation without the 'Liberty' casting
! It is recommended that a hearth should be installed as in figure 1.
For installation with the 'Liberty' casting
! It is recommended that a hearth should be installed as in figure 2.
For installation with and without the 'Liberty' casting
! If a reduced depth Hearth is fitted, the fire must be installed so that the distance
from the base of the fireplace opening in the wall to the finished floor level is 75mm
minimum. It is recommended that the reduced hearth has a depth from the fixing plane
of the fire of 100mm minimum. This is necessary to support the lower front casting. The
minimum shelf height will have to be taken from the base of the fireplace opening.
4.5 If the Fireplace opening is greater than the acceptable dimensions given in this
guide, do not use the back of a fire surround or marble to reduce the opening. This may
cause cracking of the surround back or marble
4.6 The appliance must not stand on combustible materials or carpets.
Page 8
INSTALLER GUIDE

Page 9
INSTALLER GUIDE
Figure 1. Hearth and fireplace opening
Figure 2. Hearth and fireplace opening for installations using the
LIBERTY CASTING ONLY

Page 10
INSTALLER GUIDE
Table 1. Flue sizing table.

4.7
The minimum height from the top of the hearth to the underside of any shelf made
from wood or other combustible materials is as follows: -
! For a shelf up to 150mm deep
Minimum height = 860mm.
! For a shelf deeper than 150mm
860mm + 12.5mm for every 25mm depth over 150mm
(See Graph 1).
4.8 Note that soft wall coverings (e.g. embossed vinyl, etc.) are easily affected by
heat. They may scorch or become discoloured when close to a heating appliance. Please
bear this in mind when installing.
4.9
This appliance must not be installed in any room that contains a bath or shower or
where steam is regularly present.
4.10
An extractor fan may only be used in the same room as this appliance, or in any
area from which ventilation for the appliance is taken, if it does not affect the safe
performance of the appliance. Note the spillage test requirements detailed further on in
this manual. If the fan is likely to affect the appliance, the appliance must not be
installed unless the fan is permanently disconnected.
4.11 Normal adventitious ventilation is usually sufficient to satisfy the ventilation
requirements of this appliance. In GB reference should be made to BS 5871 Part 2 and
in IE reference should be made to the current edition of IS 813 “Domestic Gas
Installations” which makes clear the conditions that must be met to demonstrate that
sufficient ventilation is available.
Page 11
INSTALLER GUIDE
Graph 1. Combustible shelf clearances

4.12
Propane gas appliances must not be installed in a room that is built entirely below
ground level (see BS 5871 Part 3).
4.13 If the appliance is to be fitted
against a wall with combustible cladding,
the cladding must be removed from the
area shown in figure 3
4.14 Combustible side projections up to
75mm forward of the fixing plane of the
fire are to be a minimum of 125mm from
the fireplace opening (See figure 4)
4.14.1 Combustible side projections
greater than 75mm forward of the fixing
plane of the fire are to be a minimum of
178mm from the fireplace opening (See
figure 4).
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INSTALLER GUIDE
Firefront Dimension 'X' (mm) Dimension 'Y' (mm)
Azure 400 65
Quattro / Anthem 390 65
Majestic 400 50
Figure 4. Appliance dimensions
Figure 3. Removal of combustible cladding

4.14.2
Non-combustible side projections to be 75mm from the fireplace opening (See
figure 4)
4.15 The appliance is fitted with an A.S.D (Atmosphere sensing device). If the
appliance closes down after a period of operation for no apparent reason, the consumer
should be informed to stop using the appliance until the installation and appliance have
been thoroughly checked. The A.S.D will shut the appliance down if an unacceptable
amount of harmful products of combustion accumulate. Under no circumstances should
the A.S.D be altered or bypassed in any way. Only a genuine manufacturers replacement
part should be fitted. The individual A.S.D components are not replaceable.
4.16
A fireguard complying with BS 8423 should be fitted for the protection of young
children, the elderly, or the infirm.
5. UNPACKING
Contents:
1Burner assembly
1Nut & olive for 8mm inlet pipe
2Screws
2Plastic screw plugs
1Fuel bed matrix support plate
2Self tapping screws
1Inlet ‘T’ connector
1Ceramic fuel effect pack.
For models supplied with a firefront
1Firefront and Cover
Carefully remove the contents. Take special care in handling the ceramic fuel effect
pieces. Check that all the listed parts are present and in good condition.
Page 13
INSTALLER GUIDE

6. INSTALLATION OF APPLIANCE
INSTALLATION
6.1 Fireplace size.
The fireplace must comply with the requirements described in section 4.
6.2 Fireplace flue pull.
Visually inspect the flue for any obstruction, and that a smooth transition from the
fireplace opening into the flue is available. Close all doors and windows in the room in
which the appliance is to be installed. After confirming with a match that smoke is
drawn into the flue, light a 13 gram smoke pellet and check that there is a definite flow
through the flue. Verify outside that the smoke exits from one terminal only and that the
termination is suitable. Observe, where possible, upstairs rooms and loft spaces for signs
of escaping smoke indicating a defective flue. If there is not a definite flow warm the
flue for a few minutes and repeat the smoke pellet test. If there is still no definite flow
the flue may need remedial work –
Do not fit the appliance until there is a definite
flow through the flue.
IMPORTANT
Before continuing with the installation of this gas fire the aeration setting on
the burner must be checked. This is factory set. See section 12.1 (Servicing
and parts replacement).
6.3 Installation of the burner unit
6.3.1 Prior to installation of the burner
the rear support plate must be fitted
(See figure 5). Two self-tapping
screws retain the plate.
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INSTALLER GUIDE
Figure 5. Fitting the rear support plate

6.3.2 Burner Positioning
The two tags at the side of the burner can be folded
against the side of the burner tray. This may be required
for installations where the width of the fireplace
opening is restricted (See figure 6)
For installations without the 'Liberty' casting
! Place the burner unit centrally within the fireplace
opening. Position the burner to the rear
of the opening, this may be moved
forward providing the front of the burner
tray does not protrude beyond the front
plane of the fireplace opening by more
than 33mm (See figure 7).
For installations with the 'Liberty'
casting
! Place the casting centrally within the
fireplace opening. Position the casting to
the rear of the opening. The casting may
be moved forward providing the inner
front curve of the casting does not
protrude beyond the front plane of the
fireplace opening by more than 33mm
(See figure 8).
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INSTALLER GUIDE
Figure 8. Liberty casting positioning
Figure 7. Burner positioning
Figure 6. Burner tags

6.3.3 Locating the burner.
! Place the burner assembly in
position (If installing into a 'Liberty'
casting the rear support plate on the
burner must touch the rear inner edge
of the casting. See figure 9).
! Mark on the fireplace floor the
position of the fixing holes in the
bracket that is attached to the rear of
the front leg. There are two holes in
this bracket to prevent burner
movement in use (See figure 10).
! Remove the burner assembly.
! Using a 6mm masonry drill, drill
into the hearth at the marked
position.
! Insert the supplied screw
plugs.
! Remove the fixing bracket
from the front leg by undoing
the screw.
! Place the bracket in
position on the fireplace floor
and fix in position using the
woodscrews provided.
! Place the burner assembly
back in position and attach to
the bracket by refitting the
screw.
7. BURNER AND SUPPLY PIPE INSTALLATION
A nut and olive is provided for an 8mm-pipe inlet connection directly to the gas control.
The inlet ‘T’ connector can be rotated to allow a connection from any direction. The
inlet ‘T’ connector includes a valve for isolating the gas supply. Note that the centre of
the appliance inlet ‘T’ connector is 25mm above the fireplace floor. The inlet ‘T’
connector should be fitted to the supply pipe at this stage.
The supply pipe must be rigid material. Flexible pipe must not be used. Connect the
supply line to the appliance.
Page 16
INSTALLER GUIDE
Figure 10. Locating the burner
Figure 9. Locating the burner into the Liberty
casting.

Turn on the gas supply and pressure check the installation pipework for gas soundness.
In the United Kingdom (GB) check in accordance with the current edition of BS 6891.
In the Republic of Ireland check in accordance with the current edition of IS 813
“Domestic Gas Installations”.
7.1 Preliminary burner checks.
Some burner operations can be checked at this stage. Checking now will mean that less
disassembly will be required if any problems are found. A full check should still be
made, however, after final installation.
7.1.1 Lighting the fire
If closed,
open the isolating inlet ‘T’ connector. Depress the control knob and rotate it
anticlockwise to the pilot ignition position. A ‘click’
will be heard as the integral piezo
operates. A spark should be seen between the electrode and pilot tip. Turn the control
knob clockwise to the ‘Off’ position. Repeat this operation until a flame appears at the
pilot. There may be a delay before the pilot lights due to air being purged from the
system. When a flame appears at the pilot keep the control knob depressed and hold the
pilot ignition position for five seconds. When the control knob is released the pilot
flame should remain lit.
7.1.2 Operating the burner.
When the pilot burner is operating properly, gradually turn the control knob anti-
clockwise to ‘HIGH’ (Depress the knob slightly to get past the pilot ignition position).
The main burner should now light. Depress the control knob slightly to release from the
‘HIGH’ position and turn back (clockwise) to ‘LOW’. While turning, the burner flames
should gradually become lower but remain alight. Depress the control knob slightly to
release from the ‘LOW’ position and turn back (clockwise) to the Pilot ignition position.
The main burner should extinguish but the pilot
should remain alight. Depress the control knob
slightly and turn back (clockwise) to turn OFF.
This will extinguish the pilot.
7.1.3 Checking the inlet pressure.
The appliance is pre-set to give the correct heat
input at the inlet pressure shown in section 3 of
this manual. No adjustment is necessary.
1. Check the inlet pressure by fitting a pressure
gauge at the test point. The test point is on the
inlet ‘T’ connector (See figure 11). Check the
pressure with the appliance alight and set at
maximum output.
2. After checking, turn off the appliance.
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INSTALLER GUIDE
Figure 11. Pressure test point

Remove the pressure gauge and replace the test point sealing screw.
3. Relight the appliance. Turn to the maximum output position and test around the
sealing screw for gas soundness with a suitable leak detection fluid.
8. FITTING THE FIREFRONT
8.1 For models NOT supplied with a Firefront.
A slotted firefront with a minimum free area as shown in figure 12 must always be
used.
8.2 For models SUPPLIED with a firefront.
The firefront supplied with this fire has been tested and found to be satisfactory for use
with this fire. The open area may differ slightly from that shown in figure 12.
Place the decorative
firefront on the
hearth and central to
the appliance.
‘Quattro’ /
‘Anthem’ firefront
only
1. The Quattro /
Anthem firefront is
fitted with a set of
fixing brackets. Each
bracket has two
threaded holes. As
supplied the top threaded hole
should be fitted with a 25mm long
machine screw. Remove the
machine screw and locate to the
threaded hole below.
2. The screw should be set at a
distance of 7mm (Measured from
the surface of the bracket to the
underside of the screw head).
Adjust the screw to this distance
(See figure 13).
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INSTALLER GUIDE
Figure 13. Bracket locations
Figure 12. Firefront minimum open area requirements

3. Locate the firefront as in figure 14. The
screw heads should locate into the slots in the
burner tray.
4. The lower 'ashpan' casting should be located
as in figure 15.
‘Liberty’ casting only
1. The ‘Liberty’ casting has been tested and
approved for use with the model 739 burner.
9. FITTING THE CERAMIC FUEL EFFECT
The installer and owner guide for the ceramic fuel effect is supplied with the ceramic
fuel effect. It is important that the fitting guide for the ceramic fuel effect be placed
inside or attached to this guide and handed to the customer following completion of the
‘Final review’ section.
Page 19
INSTALLER GUIDE
Figure 14. Hanging the firefront
Figure 15. Lower ‘ashpan’
location

10. FULL OPERATING CHECKS
Spillage check.
For installations without the 'Liberty' casting
! A spillage check must be made before
leaving the installed appliance with the
customer. Make this with all the ceramic fuel
effect pieces and firefronts / castings are in
position. (See figure 16 )
For installations with the 'Liberty' casting
! A spillage check must be made before
leaving the installed appliance with the
customer. Make this with all the ceramic fuel
effect pieces and firefronts / castings are in
position. (See figure 17)
! Close all doors and windows in the room
containing the appliance. Light the appliance
and set the control to the
‘HIGH’ position. Leave the
appliance on for five minutes.
See lighting instructions
within section 7 of this guide.
! The end of the smoke
match should be level with the
front face of the fireplace
opening.
! The installation is
satisfactory if the smoke is
drawn into the fireplace
opening. If the smoke is not
drawn into the fireplace
opening, leave the appliance
alight at the maximum setting
for a further ten minutes and
then repeat the test. If smoke
is still not drawn into the appliance disconnect the appliance and seek expert advice.
Page 20
INSTALLER GUIDE
Figure 17. Spillage check for installation with the
‘Liberty’ casting
Figure 16. Spillage check