Baxi 946 Assembly instructions

5111554/04
INSTALLER GUIDE
We trust that these instructions give 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].
INSTALLER: Please leave this guide with the owner
© Baxi Heating U.K. Ltd.
THIS APPLIANCE IS FOR USE WITH NATURAL GAS (G20)
WHEN CONVERTED USING CONVERSION KIT NO. 0595231 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).
Model 946
Heat Engine
(GC No. 32-032-63)
INSET LIVE FUEL EFFECT GAS FIRE

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 Heading Page
1. SAFETY 4
2. APPLIANCE DATA 4
3. GENERAL INSTALLATION REQUIREMENTS 5
4. PACK CONTENTS 12
5. FIREPLACE CHECK 13
5.1 Fireplace check. 13
5.2 Fireplace flue pull. 13
6. IGNITION CHECK 14
7. GAS SUPPLY CONNECTION 14
8. PREPARING APPLIANCE FOR INSTALLATION 15
8.1 Appliance preparation. 15
8.2 Fitting the fascia. 15
8.3 Fitting the foam seal. 15
8.4 The flue restrictor. 16
9. FIREBOX INSTALLATION 17
9.1 Cable retention. 17
9.2 Floor sealing. 18
10. BURNER INSTALLATION 19
11. CERAMIC COALS INSTALLATION 20
12. CERAMIC PEBBLES INSTALLATION 22
13. FIREFRONT INSTALLATION 24
14. FULL OPERATING CHECKS 24
14.1 Check the control settings. 24
14.1.1 Lighting the burner. 24
14.1.2 Operating the burner. 25
15. SPILLAGE AND FLAME SUPERVISION CHECKS 25
16. FINAL REVIEW 27
17. SERVICING AND PARTS REPLACEMENT 28
17.1 Checking the aeration setting of the burner. 29
17.2 To remove the burner unit. 29
17.3 To remove the pilot unit. 29
17.4 To remove the gas valve. 30
17.5 To replace the burner. 30
17.6 To remove the main burner injector. 30
17.7 To remove the appliance from the fireplace. 31
17.8 To remove the fascia. 31
Page 3
INSTALLER GUIDE

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 heat engine is 4.4 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. APPLIANCE DATA
This product uses fuel effect pieces and a burner compartment rear wall
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.
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INSTALLER GUIDE

* When converted using Kit 0595231
The appliance data label is located on a plate at the base of the fire. This can be seen by
removing the firefront casting set / firefront.
3. GENERAL INSTALLATION REQUIREMENTS
3.1 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 1251 BS 1289 Part 1 BS EN 1806
BS 4543 Part 2 BS 5440 Part 1 BS 5440 Part 2 BS 5871 Part 1
BS 6461 Part 1 BS 6891
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.
Page 5
INSTALLER GUIDE
Gas Natural (G20) Propane (G31) *
Inlet Pressure 20mbar 37mbar
Input - Max. (Gross) 6.0kW (20,500Btu/h) 6.1kW (20,800Btu/h)
Input - Min. (Gross) 2.3kW (7,850Btu/h) 3.8kW (12,965Btu/h)
Inlet 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 SU - 074 Stereomatic size 128
Pilot & Atmosphere Sensing
Device SU 028 SU 020
Ignition Piezo Electric. Integral with
Gas Tap
Piezo Electric. Integral with
Gas Tap
Aeration See section 17.1 Non-adjustable

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.
3.2 In the United Kingdom, as supplied, this appliance can be installed in the
following situations: -
3.2.1 A masonry chimney with a minimum diameter of 175mm (7”) free from any
obstruction, and with any damper or restrictor plate in the chimney removed or secured,
and having a minimum effective flue height of 3m (10ft). A masonry chimney having a
correctly installed flue liner to BS715 and with a minimum flue diameter of 125mm is
also acceptable. Chair brick removal may not be required providing at least 50mm
clearance is available from the flue outlet to any fireplace component. The appliance is
designed to cater for low lintel installations (min height 505mm) providing a minimum
distance of 25mm is maintained between the lintel and the front face of the fireplace
(i.e. 25mm rebated fire surround).
3.2.1.1 ‘Hole-in-the-wall’ Installations
! It is recommended that a hearth should be installed as in figure 1.
! 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 at least 72mm. The
recommended reduced
hearth depth is 100mm.
This is necessary to
support the firefront.
3.2.2 To a fireplace
incorporating a metal
flue box conforming to
BS715 with a minimum
internal depth of 150mm.
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INSTALLER GUIDE
Figure 1. Hearth and fireplace opening dimensions
See Section 3.14

Incombustible mineral wool insulation of not
less than 50mm thickness must be applied to
the top surface of the firebox (See figure 2)
and it must stand on a non-combustible hearth
(See figure 1).
3.2.3 To a fireplace that has a 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 edition. 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 total depth of the opening
measured from the finished front of the fireplace (Including plaster, surround etc.) must
be not less than 120mm (See figure 3).
The current versions of BS1289 and BS EN 1806 recommend that there should be an air
space or insulation between the flue blocks and the plaster because heat transfer may
cause cracking on directly plastered flues. However, generally this appliance is suitable
for installations under all circumstances unless there is a history of cracking problems.
Remember that faults such as cracking may be caused by poorly built and restrictive
flues, e.g. mortar extrusions, too many bends, flue heights below three metres,
restrictive terminations, etc.
3.2.4 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.
3.3 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 127
mm. See B.S 6461 Part 1 for suitable
Page 7
INSTALLER GUIDE
Figure 2. Metal flue box

materials. Metal flue pipes must comply
with B.S 715.
3.3.1 The minimum effective height of
the flue must be 3m.
3.3.2 The flue must be clear of any
obstruction and its base must be clear of
debris.
3.3.3 The flue must be completely sealed
so that combustion products do not come
into contact with combustible materials
outside the chimney.
3.3.4 The flue must serve only one
fireplace.
3.4 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.
3.5 The flue must not be used for any
other appliance or application.
3.6 Any chimney dampers or restrictors should be removed. If removal is not
possible they must be fixed in the open position.
3.7 If the appliance is intended to be installed to a chimney, which 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.
3.8 If the fireplace opening is an underfloor draught type, it must be sealed to stop
any draughts.
3.9 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 purpose made proprietary class “O”-150°C surround. The hearth material
must be at least 12mm thick. The periphery of the hearth (or fender) should be at least
Page 8
INSTALLER GUIDE
Figure 3. Pre-cast fireplace

50mm above floor level to discourage the placing of carpets or rugs over it.
The appliance must not stand on combustible materials or carpets (See figure 1).
3.10
The front face of the fireplace should be reasonably flat over the area covered by
the hotbox top and side flange seals to ensure good sealing. These faces should be made
good if necessary.The fireplace floor should be reasonably flat to ensure that a good seal
with the hotbox can be made.
3.11 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.
3.12
The appliance must not be installed in any room, which contains a bath, or shower
or where steam is regularly present.
3.13
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.
3.14 The minimum height from the top surface of the hearth to the underside of any
shelf made from wood or other combustible materials is detailed below.
• For a shelf up to 150mm deep: Minimum height = 750mm.
• For a shelf deeper than 150mm: 750mm + 12.5mm for every 25mm depth over
150mm (See Graph 1).
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INSTALLER GUIDE
Graph 1. Combustible shelf clearances

3.15 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
3.16 Propane gas appliances must not be installed in a room, which is built entirely
below ground level (See BS 5871 Pt2).
3.17 If the appliance is to be fitted against a
wall with combustible cladding, the cladding
must be removed from the area covered by the
fascia. The cladding must also not touch the
fascia (See figure 4). We suggest that the
actual fascia is used as a template to mark the
area for combustible cladding removal and that
this area is increased by at least 2mm all
round.
3.18 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 shown in figure 5.
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INSTALLER GUIDE
Figure 4. Removal of combustible
cladding (Firefront may differ
from that shown)
Figure 5. Appliance dimensions (Firefront may differ from that shown)

A 10mm access clearance from a non-combustible surface is necessary at both sides
(See figure 5).
3.19 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.
3.20 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.
3.21
A fireguard complying with BS 8423 should be fitted for the protection of young
children, the elderly, or the infirm.
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INSTALLER GUIDE

4. PACK CONTENTS
Remove all the items carefully to prevent damage. Take special care when handling the
ceramic components. Some items may be contained in the packaging fitments -
Examine the packaging carefully before discarding. Check that all the items are present
and undamaged.
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INSTALLER GUIDE
1 Hotbox and burner assembly
1Loose parts pack including: -
1 Burner tray trim
1 Length of self-adhesive foam seal
2 Tension cables
2 Cable adjusters
1 Flue restrictor with 2 securing screws
4 Eyebolts
4Fibre plugs
1 Strip of floor sealing tape
1Nut and Olive for 8mm inlet pipe
1Inlet “T” connector including
pressure test point
1Grommet for rear of hotbox.
1Ceramic fuel effect base
1Loose ceramic pack
1Fascia pack - (Contains three
separate pieces)
1Firefront (Not shown)
1Literature pack.
Figure 6. Pack contents

5. FIREPLACE CHECK
5.1 Fireplace check.
5.1.1 Fireplace size
The fireplace must comply with the requirements described in section 3.2. This may
entail removing the fireback and infill material behind the fireback.
5.1.2 Fireplace general condition
The fireplace floor should be reasonably flat to ensure that the hotbox can be installed
without it rocking and so that a good seal can be made at the bottom front of the box.
The front face of the fireplace should be reasonably flat over the area covered by the
hotbox top and side flange seals to ensure good sealing. These faces should be made
good if necessary. If the appliance is to be fitted against a wall with combustible
cladding, the cladding must be removed from the area covered by the fascia. The
cladding must also not touch the fascia (See figure 4). We suggest that the actual fascia
is used as a template to mark the area for combustible cladding removal and that this
area is increased by at least 2mm all round.
5.1.3 Soundness for appliance attachment
One primary method of retaining the appliance is provided: -
1) Using concealed tension cables fixed to the rear of the fireplace opening. The
method is detailed in section 9 of this manual. Make sure that the areas at the back of
the fireplace are sound enough to take the eyebolts. If these areas have deteriorated due
to prolonged use, they should be made sound with a suitable cement.
5.1.4 Installations using a metal flue box
The whole of the top surface of the metal flue box must be covered with a minimum
50mm layer of mineral wool or equivalent insulation (See figure 2).
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.
Page 13
INSTALLER GUIDE

6. IGNITION CHECK
Before attempting to install, it is worth checking that the
ignition system performs satisfactorily.
Set the control knob to the ‘OFF’ position.
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. If there is no spark check the
following: -
! Ensure that the electrode lead is connected to the
terminal at the base of the electrode.
! If the above is correct, check for damage to the
electrode lead.
7. GAS SUPPLY CONNECTION
A nut and olive are provided for an 8mm pipe inlet connection to the ‘T’ connector at
the bottom front of the appliance. 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 and a pressure test point.
The supply pipe must be rigid material. Flexible pipe must not be used.
Concealed supply pipe connection.
If a concealed connection from inside the fireplace is required then, before the
appliance is fitted into the fireplace
it will be necessary to extend the supply line so
that it will project through the hole in the back of the hotbox and run to the inlet ‘T’
connector at the front. The pipe run from the supply line up to the rear opening in the
hotbox must be kept away from the area which will be taken by the hotbox when it is
installed. 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.
Page 14
INSTALLER GUIDE
Figure 7. Ignition operation

8. PREPARING APPLIANCE FOR INSTALLATION
8.1 Appliance preparation.
1. Remove any transit tape and packing and inspect for any evidence of mishandling
which might affect the performance. Each unit is flame tested before it leaves the
factory and as a result there may be slight discolouration around the burner ports.
2. Detach the burner unit from the hotbox by
removing two screws (See figure 8). Lift the
burner unit clear.
IMPORTANT
Before continuing with the installation of
this gas fire the aeration setting on the
burner must be checked. The aeration is
factory set, but will require adjustment
(See section 17.1).
3. It is important that the grommet supplied in
the loose parts pack is fitted to the hole in the
rear of the hotbox.
8.2 Fitting the fascia.
1. The fascia is supplied in three pieces. Remove
any protective film. The two longer pieces are the
left and right sides. The shorter piece is the top.
The left and right hand pieces have folded edges,
one of which is shorter than the other. This
shortened edge should be fitted at the inner top on
both sides. Fit the top piece last and centralise (See
figure 9)
8.3 Fitting the foam seal.
There is a length of self adhesive foam seal supplied with the fire. This will need to be
fitted to the outer rear edges of the side and top flanges of the convector box. This will
be fitted over the flanges of the fascia. It is therefore important to ensure that the
fascia is positioned correctly before fitting the foam seal. Cut the foam seal to the
required length. Be careful not to stretch the seal when measuring. Remove the
protective backing from the foam seal and fit this to the rear of the convector box flange
(See figure 10).
Page 15
INSTALLER GUIDE
Figure 9. Fitting the fascia
Figure 8. Burner attachment points

8.4 The flue restrictor.
This appliance is supplied with a flue restrictor
for use where the flue draught is excessive. The
restrictor must not be fitted where a precast
flue or a 125mm flue liner is used. For flue
liners greater than 125mm and all other
installations the restrictor should be fitted.
There may however, be certain exceptional
circumstances where fitting the restrictor causes
the fire to fail the spillage test. In such cases the
restrictor will have to be removed. After
removal conduct the spillage check again.
The restrictor is packed flat with the appliance
and will require bending prior to fixing. Bend
the restrictor as shown in figure 11.
Fit the restrictor as shown in figure 12 using the
two screws provided.
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INSTALLER GUIDE
Figure 12. Fixing restrictor
Figure 11. Bending the restrictor
Figure 10. Fitting the foam seal

9. FIREBOX INSTALLATION
9.1 Cable retention.
1. Make sure that the relevant
areas at the fireplace back are
sound enough to take the
eyebolts. If these areas have
deteriorated due to prolonged
use they should be made
sound with a suitable cement.
2. Drill four holes in the rear
wall of the fireplace for the
fibre plugs. The holes should
be drilled within the range of
positions shown in figure 13
using a no.12 masonry drill.
The holes should be equidistant each side of the
centre line of the fireplace to ensure that the
appliance finishes centrally in the opening when
tension is applied to the cables.
3. Insert a fibre plug into each hole. Use the fibre
plugs supplied with this appliance - Never use
plastic plugs instead of the fibre plugs supplied.
Screw the eyebolts into the plugs. Make sure that
the eyebolts are secure.
4. Place the hotbox unit close to the fireplace but
allow sufficient access into the fireplace opening so
that the cables can be threaded through the eyebolts and
returned through the back of the hotbox. If a concealed
connection is being used, insert the hotbox into the
fireplace feeding the supply pipe through the pierced hole
in the rear grommet.
5. The rear of the hotbox has a slot and hole each side of
the outlet opening. Assemble one end of the cable to the
top of the fire by passing it through the small round hole
and locking by positioning the cable in the adjacent slot
(See figure 14). Give the cables a pull so that they grip.
6. Thread the cables through the eyebolts. Return the
cables through the holes near the bottom of the hotbox
side panels (See figure 15).
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INSTALLER GUIDE
Figure 15. Cable route
Figure 14. Upper cable retention
Figure 13. Eyebolt positions

Page 18
INSTALLER GUIDE
7. Place the hotbox fully back into the fireplace
opening so that it is sealed against the fireplace
front surround.
8. Fit a cable retainer over the bottom end of each
cable.
9. Pull each cable taut. Push the cable retainers
hard up against the back panel. Tighten the screws
in the retainers so that they clamp the cables in
position. Apply tension to the cables by turning
the hexagonal adjusters by hand (See figure 16).
10. Inspect the installation of the hotbox against
the fireplace surround. If the hotbox is aligned
squarely and the sealing is satisfactory, fully
tighten the cable retainers.
11. If the hotbox is not correctly aligned, release
the tension on the cables by slackening the screws
and turning the hexagonal adjusters fully
anticlockwise. The hotbox should then
automatically realign itself. Pull each cable taut
again and push the cable retainers back against
the back panel. Again, tighten the screws in the
retainers and apply tension to the cables by
turning the hexagonal adjusters clockwise as far as
possible.
12. Do not cut off any excess cable, instead coil up
the cable so that they are available to allow easy
removal and refitting of the appliance during
subsequent service calls.
9.2 Floor sealing.
Using the floor sealing tape supplied, seal the
bottom of the hotbox to the fireplace and hearth
floor. Run the tape over the centre bracket.
Figure 17. Floor sealing
Figure 16. Lower cable retention

10. BURNER INSTALLATION
10.1 Burner and supply pipe installation.
1. Refit the burner unit to the hotbox using the two screws removed previously
2. Connect the supply line to the appliance.
3. If closed,open the isolating valve at the inlet ‘T’ connector.
4. Turn on the gas supply and pressure check the installation pipework for gas
soundness. In the United Kingdom check in accordance with the current edition of BS
6891. In the Republic of Ireland refer to the current edition of I.S. 813 “Domestic gas
installations”.
10.2.1 Lighting the burner.
1.
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.
2.
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.
10.2.2 Operating the burner.
1. 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.
If the above checks are satisfactory, continue with the installation. If not, check the
control and ignition circuitry and components.
10.3 Inlet pressure check..
The appliance is pre-set to give the correct heat input at the inlet pressure shown in
section 2 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 18). Check the pressure with the appliance alight
Page 19
INSTALLER GUIDE

and set at maximum output.
2. After checking, turn off the appliance.
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.
10.4 Fitting the burner tray trim.
1. Fit the burner tray trim over the front rim of
the burner tray. Push the trim fully down (See
figure 19).
11. CERAMIC COALS INSTALLATION
This section is for models supplied with a ‘Coal’ fuel effect only.
For ‘Pebble fuel effect’ see section 12
The ceramic fuel effect may cause staining /
discolouration to decorative surfaces. It is
therefore advisable to protest decorative
surfaces.
1. Place the base coal in the firebox (See figure
20).
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INSTALLER GUIDE
Figure 19. Burner tray trim
Figure 18. Pressure test point
Figure 20. Base coal position