Baxi Fires Division Heartbeat Oxysafe 2 Assembly instructions

© Baxi Heating U.K. Limited 2007.
600B687/11
INSTALLER GUIDE
Model339
HeartbeatOxysafe2
LIVE FUEL EFFECT GAS FIRE
(GC No. 32-032-29)
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.
Telephone [phone] (National
call rates apply in the United
Kingdom).
In the Republic of Ireland
Telephone [phone].
THIS APPLIANCE IS FOR USE WITH
NATURAL GAS (G20).
THIS APPLIANCE IS SUITABLE ONLY
FOR INSTALLATION IN THE UNITED
KINGDOM (GB) AND THE REPUBLIC
OF IRELAND (IE).
INSTALLER: Please leave this guide with the
owner

© Baxi Heating U.K. Limited 2007.
All rights reserved. No part of this publication may be reproduced in any material form
(including photocopying), stored in any medium by electronic means (including in any
retrieval system or database) or transmitted, in any form or by any means, whether
electronic, mechanical, recording or otherwise, without the prior written permission of
the copyright owner.
Applications for the copyright owner's permission to reproduce 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, Pentagon House, Sir Frank Whittle
Road, Derby, DE21 4XA.
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.
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
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INSTALLER GUIDE
© Baxi Heating U.K. Limited 2007.

Safety First.
Baxi Fires Division fires are CE Approved and designed to meet the appropriate British
Standards and Safety Marks.
Quality and Excellence.
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.
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INSTALLER GUIDE
© Baxi Heating U.K. Limited 2007.

CONTENTS
Section Heading
Page
1 SAFETY 5
2 LIST OF ACCESSORIES 5
3 APPLIANCE DATA 6
4 GENERAL INSTALLATION REQUIREMENTS 8
4.11.2 Conventional fireplace. 11
4.11.3 Wall mounting to conventional or pre-cast flues. 11
4.11.4 Precast flues. 12
4.11.5 Metal flue box. 12
5 PRE-INSTALLATION PREPARATION 15
5.1 Unpacking. 15
5.2 Fireplace flue pull. 15
5.3 Appliance preparation. 15
6 APPLIANCE INSTALLATION 18
6.1 Installing to a hearth. 18
6.2 Wall mounting. 18
6.3 Gas supply connection. 19
6.4 Fit the ceramic fuel effect and window. 19
7 CONTROL AND PRESSURE CHECKS 20
7.1 Check control settings. 20
7.2 Check burner pressure. 20
7.3 Test for spillage. 20
7.4 Flame supervision and spillage monitoring system. 22
8 FINAL ASSEMBLY AND REVIEW 22
8.1 Fitting the fascia. 22
8.2 Final review. 22
9 SERVICING AND PARTS REPLACEMENT 23
9.1 To remove the window unit. 24
9.2 To remove the fascia. 24
9.3 To remove the ceramic fuel effect. 24
9.4 To remove the gas tap. 25
9.5 To remove the piezo generator. 25
9.6 To grease the control tap. 25
9.7 To remove an injector. 26
9.8 To remove the complete burner module, pipes and pilot. 26
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© Baxi Heating U.K. Limited 2007.

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 is 15.43 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.
2 LIST OF ACCESSORIES
Description Part number
Spigot extension 0595191
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© Baxi Heating U.K. Limited 2007.

3 APPLIANCE DATA
The appliance data label is on the inner face of the back panel at the lower left hand
side. It is visible when the fascia is removed.
The efficiency of this appliance has been measured as specified in BS 7977 - 1 and the
result is as below :
Model
Efficiency % (Gross)
339 71
The gross calorific value of the fuel has been used for this efficiency calculation. The
test data from which it has been calculated has been certified by Advantica Certification
services (0087). The efficiency value may be used in the UK Government's Standard
Assessment Procedure (SAP) for energy rating of dwellings.
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© Baxi Heating U.K. Limited 2007.
Gas Natural (G20)
Inlet Pressure 20mbar
Gross Heat Input Control Setting
45.05kW (17,200Btu/h)
33.45kW (11,800Btu/h)
21.80kW (6,100Btu/h)
11.55kW (5,300Btu/h)
Burner Test Pressure (Cold) 17.2 + 0.75mbar
(6.9 + 0.3in w.g.)
Gas Connection 8mm pipe
Burner Injectors Upper Bray Cat. 99 Size 115
Lower Bray Cat. 99 Size 230A
Pilot & Atmosphere Sensing Device SIT Ref. OPNG9419
Ignition Piezo-electric
integral with gas tap
Aeration Non-adjustable

The conversion of net efficiency to gross was achieved by multiplying the net
efficiency by the following conversion factor from Table E3 of SAP 2005, rounding
down to the nearest whole number.
This product uses a burner gasket and burner surface 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 not to touch or disturb the burner surface 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. Do NOT
vacuum the burner surface. When replacing the the burner surface we recommend
that the replaced items are not broken up, but are sealed within a heavy duty
polythene bag, clearly labelled as RCF waste.
RCF waste is classed as a stable, non-
reactive hazardous waste and may be disposed at a landfill licenced to accept such
waste. Protective clothing is not required when handling these articles, but we
recommend the use of suitable gloves to prevent irritation. We also 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.
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© Baxi Heating U.K. Limited 2007.
Gas Conversion factor from net to gross efficiency
Natural Gas 0.901

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 715
BS EN 1806 which replaces BS 1289 Part 2
BS 5440 Part 1
BS 5440 Part 2
BS 6891
BS 1251
BS EN 1856 Part 1 which replaces BS 4543 Part 2
BS 5871 Part 1
BS EN 1858 which replaces BS 1289 Part 1
BS 6461 Part 1
!
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 be carried out by a competent
person and installed in accordance with:
a) The current edition of IS 813 “Domestic gas installations”.
b) All relevant national and local rules in force.
c) The current building regulations
Where no specific instructions are given, reference should be made to the relevant
British Standard Code of Practice.
4.2
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.
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4.3 Any chimney dampers or restrictors should be removed. If removal is not
possible they must be fixed in the open position.
4.4 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
4.5 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.
4.6
The appliance must not be installed in any room, which contains a bath, or shower
or where steam is regularly present.
4.7
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.
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© Baxi Heating U.K. Limited 2007.
Figure 1 Dimensions and clearances

4.8 The minimum allowable distance from the outside of the appliance fascia to a
corner wall having combustible material or any other combustible surface which
projects beyond the front of the appliance is 100mm at either side (See figure 1). A
clearance of 100mm should be maintained at the right side in all installations to allow
satisfactory access to the control knob. Although no side clearance is necessary to non-
combustible surfaces on the left hand side we recommend a 100mm clearance for
service access to the fascia side fixings.
4.9 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 genuine manufacturers replacement
parts should be fitted.
4.10 Allow a minimum clearance of 150mm from the top surface of the appliance
fascia to the underside of any shelf whether it is made from non-combustible
materials.
This clearance is necessary to allow the fascia to be lifted off for servicing.
For a shelf made from
wood or other combustible materials deeper than 150mm,
the
minimum clearance must be as below. Important : No combustible material (e.g.
Wallpaper, plastic tiling, wood panelling etc.) must be used on the fireplace wall below
the shelf.
• For a shelf up to 150mm deep: Minimum clearance = 150mm.
• For a shelf deeper than 150mm: 150mm + 12.5mm for every 25mm depth over
150mm (See Graph 1).
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Graph 1. Combustible shelf clearances

4.11 In the United Kingdom, as supplied, this appliance can be installed in the
following situations: -
Note: A spigot extension is available (Baxi Fires Division part number 0595191). When
fitted this shall extend through the closure plate for at least 15mm and have a minimum
clearance of 50mm from the end to any surface.
4.11.1 The appliance must be mounted on a non-combustible hearth
except when the
conditions in section 4.11.3 are met
(N.B. conglomerate marble hearths are considered
as non-combustible). The hearth must be at least 680mm wide x 300mm deep. 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.
The appliance can be fitted to a purpose made proprietary class “O” 150°C surround.
4.11.2 Conventional fireplace.
The fireplace opening must be within the following dimensions:
*The total height of the closure plate is 660mm and will accommodate a maximum
opening height of 650mm (This allows a 10mm overhang). Heights above
623mm (Inclusive of sealing tape)
will leave the sealing tape and closure plate visible
above the appliance.
4.11.3 Wall mounting to conventional or pre-cast flues.
The wall opening must be within the following dimensions:
*The total height of the closure plate is 660mm and will accommodate a maximum
opening height of 650mm (This allows a 10mm overhang). Heights above
623mm (Inclusive of sealing tape)
will leave the sealing tape and closure plate visible
above the appliance.
The bottom of the appliance must be at least 100mm above the finished floor covering.
See figure 1. This requires the top of the opening to be at least 650mm above the
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Width Height
Max. 432mm
Min. 305mm Max. 610mm*
Min. 550mm
Width Height
Max. 432mm
Min. 305mm Max. 610mm*
Min. 334mm

finished floor covering. Any opening visible below the appliance may be closed in but
the depth of the catchment space within the wall opening must be as shown in figure 2.
4.11.4 Precast flues.
The appliance can be installed to a fireplace that has a properly constructed precast
concrete or clay flue block system conforming to BS1289 or BS EN 1806. The
appliance is suitable for installations conforming to older versions of BS1289 as well as
the current standards. The flue blocks must have a minimum width not less than 63mm
and a cross-sectional area not less than 13,000mm2.
Older editions of BS1289 required
a cross-sectional area of 13,000mm2. The current revision of the standard requires
16,500mm2. This appliance is suitable in both cases.
The chimney should be one or two storey high but not less than 3m vertical height and
be correctly terminated. No mortar fangs between the blocks should be extruded into the
flueway. If raking blocks are used, they must be fitted in accordance with the
manufacturer’s instructions. Mortar must not be allowed to drop down and accumulate
in the raked positions.
The fireplace opening must be within the following dimensions:
1The total height of the closure plate is 660mm and will accommodate a maximum
opening height of 650mm (This allows a 10mm overhang). Heights above
623mm (Inclusive of sealing tape)
will leave the sealing tape and closure plate visible
above the appliance.
2Any opening visible below the appliance may be closed in.
4.11.5 Metal flue box.
The appliance can be installed to a metal flue box conforming to BS715 with a
minimum internal depth of 200mm. Incombustible mineral wool insulation of not less
than 50mm thickness must be applied to the top surface of the firebox and it must stand
on a non combustible hearth. There must be an air gap clearance of 50mm all round the
outside of the box and above the top insulation to any combustible material.
The opening must be within the following dimensions:
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Width Height
Max. 432mm
Min. 407mm Max. 610mm*
Min. 560mm**
Width Height
Max. 432mm
Min. 305mm Max. 610mm1
Min. 550mm2

*The total height of the closure plate is 660mm and will accommodate a maximum
opening height of 650mm (This allows a 10mm overhang). Heights above
623mm (Inclusive of sealing tape)
will leave the sealing tape and closure plate visible
above the appliance.
** This fire has been tested for use on the ‘Rite-Vent’ 7T95125 metal flue box and
found to be satisfactory.
4.12 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.
4.13 The following flues are suitable:
! 225mm x 225mm conventional brick flue.
If a flue liner is used, it must be a minimum of 125mm diameter. The liner must be
sealed to the surrounding area above the fireplace opening and to the top of the
chimney. An approved terminal must be fitted.
! A properly constructed precast flue conforming to B.S 1289 or BS EN 1806.
!
A flue pipe with a minimum diameter of 127mm. See B.S 6461 Part 1 for suitable
materials. Metal flue pipes must comply with B.S 715. See section 4.11.5 of this guide
for flue box opening sizes.
4.13.1 The flue must conform to BS 5440: Part 1 in design and installation.
The flue, measured from the bottom of the fireplace opening to the bottom of the
terminal, shall be not less than 3m in actual vertical height. When calculated in
accordance with BS 5440: Part 1 Annex A, the minimum equivalent
height of the flue
shall be 2.0m of 125mm dia. flue pipe.
4.13.2
The flue must be clear of any obstruction and its base must be clear of debris.
4.13.3
The flue must be completely sealed so that combustion products do not come
into contact with combustible materials outside the chimney.
4.13.4 The flue must serve only one fireplace.
4.13.5
Proprietary terminals must comply with BS 715 or BS 1289. Any terminal or
termination must be positioned in accordance with BS 5440 Part 1 to ensure that the
products of combustion can be safely dispersed into the outside atmosphere. Where the
appliance is connected to an unlined brick chimney it is generally unnecessary for the
chimney pot to be replaced or for a terminal to be fitted unless the flue has a diameter
smaller than 170mm.
4.14
If the fireplace opening is an underfloor draught type, it must be sealed to stop
any draughts.
4.15
The flue spigot and any spigot extension must be capable of passing through the
closure plate by at least 15mm with a minimum clearance of 50mm between its open
end and the nearest obstruction.
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There must also be a minimum clearance of 165mm between the back of the closure
plate and the back of the catchment space.
On conventional flues the catchment space below the flue spigot must extend at least
250mm downward measured from the bottom of the flue spigot (See figure 2).
4.16 The front of the fireplace should be flat over
an area sufficient to ensure a good seal with the
closure plate. The flat surface should extend for a
height equal to that of the closure plate plus 20mm
and for a width equal to that of the closure plate
plus 40mm.
4.17 If the fire is to be fitted against a wall with
combustible cladding, the cladding must be
removed from the area shown in figure 3.
4.18 The space between the fireplace front face
and the back of the appliance fascia must not be
filled in.
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Figure 3. Area to be free of
combustible cladding
Figure 2 Fireplace catchment
space.

5 PRE-INSTALLATION PREPARATION
5.1 Unpacking.
The carton contains the following:-
1off Fire assembly.
1off Ceramic fuel effect (In packaging inside firebox).
1off Closure plate.
1off Smoke match tube.
1off Olive & olive nut for gas line connection
1off Literature pack
Remove all the items carefully to prevent damage. Some items may be contained in the
packaging fitments -Examine the packaging carefully before discarding. Check that all
the items are present and undamaged.
5.2 Fireplace flue pull.
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.
5.3 Appliance preparation.
5.3.1.Stand the fire upright.
5.3.2.Remove the two transit screws from the
upper back panel extensions (See figure 4).
5.3.3.Detach the window surround (See figure 5).
a) Remove the two knurled screws
immediately below the outer fascia canopy.
b) Lift the surround clear of the slots in the
outer fascia apron
5.3.4.Remove the control knob by pulling clear
of the gas tap spindle.
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Figure 5. Window surround
removal.
Figure 4. Transit screws.

5.3.5.Remove the control bezel by unscrewing two
screws (See figure 6).
5.3.6.Detach the fascia by removing the screws at the
fascia sides (See figure 6).
5.3.7.Pull the bottom of the fascia forward while
springing the bottom corners outward to clear the
fixing brackets. Lift the fascia upward and forward to
clear (See figure 6). Place carefully to one side.
5.3.8.Remove the window unit by removing the
screws each side of the window frame and lifting the
unit clear.
5.3.9.Remove the ceramic coal fuel effect pack from
the firebox and keep it safe.
5.3.10. Check ignition spark
Before attempting to install, it is worth checking that
the piezo electric spark ignition system operates
satisfactorily.
To initiate the spark, temporarily refit the control knob
to the tap spindle. Depress the control knob and while
keeping it depressed, turn anticlockwise through
approximately 60° to the 1/IGN position. A spark
should track from the electrode pin to pilot burner. If
there is no spark or incorrect tracking, check that the
spark gap is between the limits shown in figure 7. If
the spark gap is correct, check the ignition wiring.
Remove the control knob after checking.
5.3.11 For wall mounted appliances.
Remove the levelling screws and locknuts from below
the feet.
5.3.11 If the fire is fitted to a recessed fireplace, an
extension flue spigot up to a maximum total length of
125mm may be used. The extension must be a tight fit
over the flue spigot and be secured by two self tapping
screws. Note the minimum clearance required as shown
in figure 2.
5.4 Fitting the closure plate.
(See figure 8).
The closure plate has an opening at the bottom for a
central gas feed pipe. The gap between the pipe and this
opening should be sealed with tape after connection. If a central feed pipe is not
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Figure 7. Pilot spark gap
Figure 6. fascia removal.

required the opening should be completely
sealed with tape.
5.4.1 Hearth mounting
(See figure 9).
The closure plate must be fitted and sealed
to the hearth and fireplace opening using a
suitable heat resistant material. If
necessary cut the closure plate but make
sure that it overlaps the fireplace opening
sufficiently to allow satisfactory sealing.
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Figure 9. Closure plate for hearth
mounting.
Figure 8. Closure plate.

5.4.2 Wall mounting
(See figure 10).
The closure plate must be fitted
and sealed to the hearth and
fireplace opening using a suitable
heat resistant material.
If necessary cut the closure plate
but make sure that it overlaps the
fireplace opening sufficiently to
allow satisfactory sealing.
The bottom of the appliance must
be at least 100mm above any
carpet or other floor covering. To
achieve this, the bottom of the
flue spigot opening must be at
least 565mm above the finished
floor covering.
5.4.3 Check the flue pull with
closure plate fitted by applying a
lighted match or smoke match to the flue spigot opening in the closure plate and
observe the smoke. If there is a definite flow continue with the installation. If not check
the fitting of the closure plate. The fireplace flue pull check described in section 5.2
should have confirmed that the fireplace itself is satisfactory.
6 APPLIANCE INSTALLATION
6.1 Installing to a hearth.
6.1.1 Place the fire centrally on the hearth
making sure that the spigot lines up with the
spigot hole in the closure plate. Gently slide
the appliance into place being careful not to
scratch the hearth. The spigot must enter
the closure plate to a depth of at least 15mm.
6.1.2 Level the fire by loosening the lock
nuts and turning the levelling screws in the
feet up or down as required while they bear
on the hearth. When the fire is level and
square to the wall, retighten the lock nuts.
6.2 Wall mounting.
The fixing hole positions in relation to the
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Figure 11. Wall fixing holes
Figure 10. Closure plate for wall mounting.

flue spigot opening are shown in figure 11.
Mark these positions on the wall. The positions can alternatively be marked by placing
the fire in position and marking the wall through the holes in the back panel. Drill and
plug the holes using no. 10 wall plugs. Place the fire in position and secure with four
no. 10 x 2in. woodscrews.
6.3 Gas supply connection.
8mm rigid tubing must be used to connect the gas supply to the appliance. An olive and
nut are provided for connection to the inlet “T” connector on the appliance. The
connector can be rotated to allow connection from either side or the rear. The connector
includes a valve for isolating the gas supply.
The closure plate has a cut-out for rear connection.
Seal the gap between the cut-out and the supply
pipe.
Pressure check the installation pipework for gas
soundness. In the United Kingdom check in
accordance with the current edition of BS6891. In
the Republic of Ireland refer to the current edition of
IS 813 “Domestic gas installations”.
6.4 Fit the ceramic fuel effect and window.
6.4.1 Place the ceramic fuel effect in position Make
sure that it rests on the ledges at the sides of the
firebox and that its back face is touching the
horizontal rib at the back of the firebox (See figure
12).
6.4.2 Replace the window unit. Secure the window
unit to the firebox the two screws removed
previously.
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Figure 12. Ceramic fuel
effect location

7 CONTROL AND PRESSURE CHECKS
7.1 Check control settings.
7.1.1 If closed, open the isolating valve at the inlet ‘T’ connector.
7.1.2 To help in checking the control positions while the fascia is detached, place the
control bezel over the gas tap spindle and against the tap bracket. Temporarily secure to
the tap bracket with one of the screws.
7.1.3 Fit the control knob over the gas tap spindle.
7.1.4 Depress the control knob and turn anticlockwise partially towards the 1/IGN
position until some resistance is felt. Keep depressed at this position to purge air from
the system then, while keeping it depressed, turn fully to the 1/IGN position. A spark
should be generated at the pilot while turning. The spark should ignite the pilot.
7.1.5 When pilot ignition has been achieved, keep the control knob depressed for
approximately ten seconds to allow the thermocouple probe to warm up and then release
it. If the pilot does not remain alight, ensure that the air has been purged, that the pilot
orifice is clear and that the thermocouple connections are sound. Replace the pilot unit
if necessary (see servicing section of this manual).
7.1.6 Check all the control settings. These are:-
7.2 Check burner pressure.
The appliance is pre-set to give the correct heat input at the inlet pressure shown in
section 1 of this manual. No adjustment is necessary. Check the burner pressure by
fitting a pressure gauge at the test point. The test point is on the pipe connecting the gas
tap to the lower injector. Check the pressure with the appliance alight and set at
maximum output (Control knob position 4).
After checking, turn off the appliance. Remove the pressure gauge and replace the test
point sealing screw. Relight the appliance. Turn to the maximum output position and
test around the sealing screw for gas soundness with a suitable leak detection fluid.
If all the above checks are satisfactory, continue with the installation. If not, check the
control and ignition circuitry and components as described in the servicing section of
this manual.
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INSTALLER GUIDE
© Baxi Heating U.K. Limited 2007.
Control Knob
Position Burner appearance
1 / IGN Centre section on low. Outer sections off.
2Centre section fully on. Outer sections off.
3Centre section fully on. Outer sections on low.
4 All sections fully on.