Baxi 741FS Assembly instructions

5110263/01
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 please
telephone [phone] .
INSTALLER: Please leave this guide with the
owner
Model 741FS
Heat Engine
(GC No. 32-032-56)
INSET LIVE FUEL EFFECT GAS FIRE
INCORPORATING THE CONTROL
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.
This gas fire is CE Approved and designed to meet the appropriate British Standards
and Safety Marks.
Quality and Excellence.
This fire has been manufactured to the highest standards of quality and excellence and
was manufactured under a BS EN ISO 9001 quality system accepted by the British
Standards Institute.
The Highest Standards
The manufacturer is a member of the Society of British Gas Industries which works to
ensure high standards of safety, quality and performance.
Careful Installation
The manufacturer is a CORGI registered company. This gas fire 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.
Baxi Fires Division, Erdington, Birmingham B24 9QP
Because our policy is one of constant development and improvement, details may vary slightly from those
given in this publication
Page 2
INSTALLER GUIDE

Page 3
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
6. IGNITION CHECK 15
7. GAS SUPPLY CONNECTION 15
8. PREPARING APPLIANCE FOR INSTALLATION 16
9. HOTBOX INSTALLATION 18
9.1 Method 1 - Front fixing to fireplace surround. 18
9.2 Method 2 - Cable retention and floor fixing. 19
9.3 Sealing floor front - All installations. 21
10. BURNER & SUPPLY PIPE INSTALLATION 22
11. CERAMIC WALLS INSTALLATION 23
12. FITTING THE FASCIA 24
13. FITTING THE CERAMIC FUEL EFFECT 24
14. FULL OPERATING CHECKS 24
15. FINAL REVIEW 27
16. SERVICING & PARTS REPLACEMENT 28
16.1 Checking the aeration setting of the burner. 29
16.2 To remove the ignition microswitch. 29
16.3 To remove the gas shut-off microswitch. 29
16.4 To remove the fascia. 30
16.5 To replace the control slide unit. 30
16.6 To replace the control slide button. 30
16.7 To remove the burner unit. 31
16.8 To remove the electronic ignition generator. 31
16.9 To remove the thermocouple interrupter block. 32
16.10 To remove the pilot unit. 32
16.11 To remove the shut-off tap. 32
16.12 To remove the gas flow rate controller . 33
16.13 To replace the burner. 34
16.14 To remove the main burner injector 34
16.15 To remove the appliance from the fireplace. 34

Page 4
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 heat engine and burner assembly is 8.5kg.
!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 burner compartment walls 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.

*When converted using kit 0595211.
The appliance data label is located on a ‘pivot’ plate at the base of the fire. This can be
seen by pulling on the raised tab.
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 1289 Part 2
BS EN 1806 BS 4543 Part 2 BS 5440 Part 1 BS 5440 Part 2
BS 5871 Part 2 BS 6461 Part 1 BS 6891 BS 8303
In England and Wales, the current edition of the Building Regulations issued by the
Department of the Environment and the Welsh Office
Page 5
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) 2.7kW (9,410 Btu/h) 4.3kW (14,670 Btu/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 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 Electronic
(Battery 9V PP3) Electronic (Battery 9V PP3)
Aeration See section 16.1 Non-adjustable

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
also conform to the relevant parts of:
a) The current edition of IS 813 “Domestic Gas Installations”
b) 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.
3.2 In the United
Kingdom, as supplied,
the appliance can be
installed in the following
situations: -
3.2.1 To a fireplace
complete with surround
and hearth as shown in
figure 1 and complying
with BS1251 after
removal of the fireback
and sufficient material
behind the fireback for a
debris catchment space.
The required fireplace,
hearth, debris catchment
area and clearance
dimensions are shown in
figure 1.
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 100
mm. 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.
3.2.2
To a fireplace incorporating a metal flue box complying with the constructional
requirements of the current edition of BS715. The dimensions of the flue box must
conform to those shown in figure 2.
Page 6
INSTALLER GUIDE
Figure 1. Hearth and fireplace opening dimensions.
See section 3.15
50mm Min.
See section 3.11

3.2.3 To a precast concrete or
clay flue block system
conforming to BS1289 with
dimensions as in 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 Suitable flues and minimum flue sizes are as follows: -
It should be noted that, as with many appliances, sharp bends or horizontal runs in
metal flues at the top of the system can be a cause of problems in these types of
installation.
! 225mm x 225mm conventional brick flue.
! 175mm diameter lined brick or stone flue.
! 200mm diameter factory made insulated flue manufactured to BS4543.
! 175mm diameter flue pipe. See BS6461 Part 1 for suitable materials.
! Single wall, twin wall or flexible flue liner with a minimum diameter of 125mm.
The materials to be used are stainless steel or aluminium as specified in BS715. 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 concrete or clay flue system conforming to BS1289
or BS EN 1806. This system is only suitable if the conditions stated in section 3.2.3 are
met.
Page 7
INSTALLER GUIDE
Figure 2. Metal flue box dimensions

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 damper or
restrictor should be removed. If
removal is not possible, they must be
secured in the open position.
3.7 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.
3.8 If the fireplace opening is an
underfloor draught type, it must be sealed to stop any draughts.
3.9 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.
3.10
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 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
Page 8
INSTALLER GUIDE
Figure 3. Precast or clay flue block system

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 surface of the hearth must be sufficiently flat to enable the bottom of the fascia and
the bottom front cover to be aligned horizontally. Any excessive unevenness (uneven
tiles, Cotswold stone, etc.) should be rectified.
The appliance must not stand on combustible materials or carpets.
3.12
This appliance must not be installed in any room that 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 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.
3.15 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 = 760mm.
• For a shelf deeper than 150mm: 760mm + 12.5mm for every 25mm depth over
150mm. (See Graph 1).
Page 9
INSTALLER GUIDE
Graph 1. Combustible shelf clearances.

3.16
Propane gas appliances must not be installed in a room that is built entirely below
ground level (See BS 5871 Part 2).
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 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.
3.19 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.
A 10mm access clearance from a non-combustible surface is necessary at the left side.
(See figure 5).
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.
Page 10
INSTALLER GUIDE
Figure 4. Removal of combustible
cladding (Fascia may differ from
that shown).

Page 11
INSTALLER GUIDE
Figure 5. Appliance dimensions and clearances (Fascia may differ from that shown)
Key Description
Dimension
(mm)
AAppliance height (mm) 606
BAppliance width (mm) 518
CAppliance depth into room (mm) 85
DMinimum mandatory clearance to combustible surfaces
projecting beyond the front of appliance (mm). 108
ERecommended clearance to non-combustible surfaces for
access purposes (mm). 108
See graph
1

4. PACK CONTENTS
The items required for this appliance are packed as below (See figure 6)
1Burner and hotbox unit.
1Nut and olive for 8mm inlet pipe.
1Inlet ‘T’ connector and pressure test point.
1Flue restrictor plate.
2Screws (For flue restrictor).
2Screws (For fireback spacing brackets).
2Screws (For rear ceramic wall support bracket).
2Washers (For fascia hanging).
2Machine screws (For fascia hanging).
1Ceramic back wall.
1 Pair of ceramic side walls.
1Ceramic fuel effect pack (Not shown).
2Small “U” seals for hotbox side flanges.
1Strip of floor sealing tape.
6Fibre plugs.
4Woodscrews.
2Fire retaining cables.
2Cable clamps.
4Eyebolts.
1Rubber grommet.
1PP3 Battery.
1Knurled shouldered screw (For control linkage fixing).
1Smoke match tube.
2Fireback spacing brackets.
1Rear ceramic wall support bracket.
1Length of self adhesive foam seal.
1Self adhesive control position label.
1Literature pack.
1Slider control unit .
2Taptite or countersunk screws (For Slider control unit).
2Fascia securing brackets.
1Control position label.
Carefully remove all the contents. Take special care in handling the ceramic walls and the
ceramic fuel effect. After fitting the slide control linkage, take care not to bend or distort
the slide control linkage when handling the fascia.
Check that all the listed parts are present and in good condition.
Page 12
INSTALLER GUIDE

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 will
probably entail removing the fireback and infill material behind the fireback. On
conventional fireplace openings the debris catchment area shown in figure 7 must be
kept clear of obstructions.
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
Page 13
INSTALLER GUIDE
Figure 6. Pack contents

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
Two primary methods of retaining the appliance are provided: -
1) By fixing to the fireplace front surround.
2)
Using concealed tension cables fixed to the rear of the fireplace opening together
with secondary fixing to the fireplace floor.
The methods are detailed in section 9 of this manual. Before selecting the retention
method, consult with the customer. Method 2 is provided for instances where drilling
holes in the front surface of the fireplace surround is unacceptable to the customer or
otherwise impractical. N.B. It is unwise to attempt to drill into marble without the
proper tools and equipment.
If method 1 is chosen, make sure that the front surround area is sound enough to take
the fibre plugs and woodscrews. If necessary, make sound with a suitable cement.
If method 2 is chosen, make sure that the areas at the back and towards the centre of the
fireplace floor are sound enough to take the eyebolts and screws. 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 100mm 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
Page 14
INSTALLER GUIDE
Figure 7. Fireplace area.

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.
6. IGNITION CHECK
Before attempting to install, it is worth checking that the electronic ignition system
performs satisfactorily.
Fit the battery to the ignition block located below
the burner tray at the left side (See figure 8). The
positive terminal (+) is to the bottom as you insert.
Rotate the control pivot bracket clockwise as far as
it will go and hold in this position (See figure 9).
This should close the ignition circuit. Sparks
should be seen tracking from the electrode pin to
the pilot tip (See figure 9).
If there are no sparks make the following checks.
! Check condition of
battery and that it is
correctly fitted.
! If the above is
satisfactory, check the
ignition circuit and
components - see the
servicing section in this
manual.
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 ‘T’ connector can be rotated to allow a
connection from any direction and 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 ‘T’
connector at the front. The pipe run from the supply line up to the rear opening in the
Page 15
INSTALLER GUIDE
Figure 9. Slider control
Figure 8. Fitting the battery

hotbox must be kept away from the area which will be taken by the hotbox when it is
installed (See figure 7).
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.
8. PREPARING APPLIANCE FOR INSTALLATION
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 16.1).
1.
Detach the burner unit from the hotbox by removing two screws (See figure 10). Lift
the burner unit clear.
2. Fit the two “U” section seals to the bottom edges of the hotbox side flanges (See
figure 11).
3. It is important that the grommet
supplied in the loose parts pack is
fitted to the hole in the rear of the
hotbox.
For concealed connection only:
4. Pierce the grommet to allow the
pipe to pass through it. The grommet
should envelop the pipe. If the hole is
larger than the pipe, seal it with tape.
Do not pierce the grommet unless
the supply pipe is to pass through it.
5. The appliance is supplied with two fireback spacers. Do
not fit the fireback spacers if the fire is to be installed
into a precast or clay flue block system as in section
3.2.3. These should extend backwards to ensure sufficient
clearance from the back of the fireplace. Remove the label
and retaining screws from the rear sides of the hotbox.
Position the fireback spacer as shown in figure 12. Secure
the fireback spacers using the screws removed previously
and the two supplied with the fire.
6.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 flue liner is used.
For all other installations the restrictor should be fitted.
Page 16
INSTALLER GUIDE
Figure 11. ‘U’ seals
Figure 10. Burner attachment points

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 loose with the appliance and is
fixed with two screws (See figure 13).
7. The upper corners of the hotbox flanges will have to
be cut away. The area to be cut away is shown in figure
14.
8. 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 hotbox. Be
careful not to stretch the seal when measuring. Remove
the protective backing from the foam seal and fit this to
the flanges (See figure 15). Ensure that there is no
gap between the foam seals where they meet at the
top flange (See figure 15)
9. This appliance is supplied with a rear ceramic
support bracket. Fit this using two screws supplied
(See figure 16).
Page 17
INSTALLER GUIDE
Figure 14. Cutting the top corners of
the hotbox.
Figure 13.Flue restrictor
Figure 12. Fireback spacers

10. Fit the two surround securing brackets to
the convection box side flanges with the
screws supplied. Note the different orientation
of the brackets at left and right sides (See
figure 17)
9. HOTBOX INSTALLATION
9.1 Method 1 - Front fixing to fireplace surround.
1. Make sure that the fireplace front surround area is sound enough to take the fibre
plugs and woodscrews. If necessary, make sound with a suitable cement.
2. Place the hotbox centrally in the fireplace in the position in which it is to be
permanently installed. 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.
3.
Mark the fireplace front surround through the four fixing holes in the side flanges of
the hotbox (See figure 18).
Page 18
INSTALLER GUIDE
LEFT RIGHT
Figure 17. Surround securing
brackets
Figure 16. Fitting the rear ceramic support.
Figure 15. Fitting the foam seal

4. Remove the hotbox. Drill four holes in the
fireplace front surround at the marked
positions using a no.12 masonry drill.
5. Insert a fibre plug into each hole.
6. Place the hotbox back in position in the
fireplace.
7. Fit a woodscrew through each hole in the
hotbox flanges and tighten to seal the box to
the fireplace surround.
9.2 Method 2 - Cable retention and floor
fixing.
1. Make sure that the relevant areas at the
fireplace back and floor are
sound enough to take the
eyebolts and screws. 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
eyebolt plugs. The holes
should be drilled within the
range of positions shown in
figure 19 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 bolts 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
Page 19
INSTALLER GUIDE
Figure 19. Eyebolt positions
Figure 18. Front Fixing

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 hotbox has two holes at each side of the
spillage plate. Insert one end of each cable (one
cable each side) from the back through the lower of
the two holes and return the end through the upper
of the holes (See figure 20). Give the cables a pull
so that they grip against the hotbox flanges.
6. Thread the cables through the eyebolts. Return the
cables through the holes near the bottom of the
hotbox back panel (See figure 21). (For precast or clay
block flue systems return the cables through the
slotted holes in the side of the hotbox).
7. Place the hotbox fully back into the fireplace opening
so that it is sealed against the fireplace front surround.
8. Drill a hole into the fireplace floor through each of the
two holes in the base of the hotbox using a no.12
masonry drill (See figure 22).
9. 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.Fit a woodscrew in
each plug and tighten.
Always screw the base into position before
applying tension to the cables. This will ensure a
tight seal between the top of the hotbox and wall
10. Fit a cable retainer over the bottom end of each
cable.
11. Pull each cable taut. Push the cable retainers
hard up against the back panel. The end of the
cable adjuster will pass into the hole. 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
23).
12. 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.
Page 20
INSTALLER GUIDE
Figure 22. Floor fixing
Figure 21. Cable route
Figure 20. Upper cable retention