Wonderfire sonnet plus br645 VA Assembly instructions

As supplied, this appliance is for use with natural gas (G20)
When converted using conversion kit no. 591149 this
appliance is for use with propane gas (G31)
This appliance is for use in the United Kingdom (GB) and the
Republic of Ireland (IE) only.
600B656/05
Plus
PlusPlus
Plus
Model BR645 VA
(G.C. 32-032-34)
INSTALLER’S GUIDE
We trust that this Installer Guide gives sufficient details to enable the appliance to
be installed and maintained satisfactorily. However, if further information is
required, our AdviceLine will be pleased to help.
Please telephone [phone] (Local call rates apply in the United Kingdom).
In the Republic of Ireland call 353 183 75114.
INSTALLER: Please leave this guide with the owner
© Wonderfire

INSTALLER’S GUIDE
Page 2
CONTENTS
1 APPLIANCE DATA ..................................................................................................3
2 GENERAL INSTALLATION REQUIREMENTS ................................................4
3 PRE-INSTALLATION PREPARATION ...............................................................9
3.1 Pack Contents...........................................................................................................9
3.2 Fireplace Flue Pull ...................................................................................................9
3.3 The Flue Restrictor...................................................................................................9
3.4 Appliance Preparation........................................................................................... 10
3.5 The Gas Supply Pipe............................................................................................. 10
4 FIREBOX INSTALLATION................................................................................. 11
Cable Retention ............................................................................................................. 11
4.2 Floor Sealing ......................................................................................................... 12
5 BURNER INSTALLATION .................................................................................. 12
5.1 Preliminary Burner Checks................................................................................... 12
5.2 Reference Pressure Check..................................................................................... 13
6 FITTING THE CERAMICS.................................................................................. 14
7 FULL OPERATING CHECKS............................................................................. 16
7.1 Recheck Control Settings...................................................................................... 16
7.2 Check for Spillage................................................................................................. 16
7.3 Flame Supervision & Spillage Monitoring System .............................................. 17
8 FINAL REVIEW..................................................................................................... 18
9 SERVICING & PARTS REPLACEMENT ......................................................... 19
9.1 To Replace Burner Plaques................................................................................... 19
9.2 To Remove the Complete Burner Unit ................................................................. 20
9.3 To Remove the Pilot Unit ..................................................................................... 20
9.4 To Remove the Gas Tap........................................................................................ 20
9.5 To Remove the Piezo Generator ........................................................................... 21
9.6 To Grease the Control Tap.................................................................................... 21
9.7 To Remove the Main Burner Elbow Injector ....................................................... 21
9.8 To Remove the Appliance From the Fireplace ..................................................... 21
SHORT LIST OF SPARES............................................................................................ 22
Wonderfire, Erdington, Birmingham B24 9QP
www.firesandstoves.com.uk
Because our policy is one of constant development and improvement, details may vary
slightly from those given in this publication

INSTALLER’S GUIDE
Page 3
1 APPLIANCE DATA
This product uses fuel effect pieces, burner compartment walls and gaskets containing
Refractory Ceramic Fibres (RCF), which are man-made vitreous silicate fibres. Excessive
exposure to these materials may cause temporary irritation to eyes, skin and respiratory
tract. Consequently, it makes sense 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.
The appliance data label is on the control plate below the right side of the burner tray. It
is visible when the bottom front cover is removed.
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) 2.2kW (7500Btu/h) 3.6kW (12280Btu/h)
Output - Max. 3.0kW (10,200Btu/h) 3.1kW (10,580Btu/h)
Output - Min 1.1kW (3750Btu/h) 1.8kW (6140Btu/h)
Burner Test Pressure (Cold) 18.2±0.75mbar
(7.3±0.3in w.g.)
35.6±0.75mbar
(14.3±0.3in w.g.)
Gas Connection 8mm pipe 8mm pipe
Burner Injector Bray Cat. 18 Size 360 Bray Cat. 18 Size 170
Pilot & Atmosphere Sensing
Device
SIT Ref. OP9030 SIT Ref. OPLPG9222
Ignition Piezo Electric. Integral with
Gas Tap
Piezo Electric. Integral with
Gas Tap
Aeration Non-adjustable Non-adjustable
* When converted using Kit 591149
Fire surround: height = 585mm width = 445mm
Appliance depth: 115mm

INSTALLER’S GUIDE
Page 4
2 GENERAL INSTALLATION
REQUIREMENTS
2.1 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.
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 to the relevant parts of:
a) The current edition of IS 813
b) All relevant national and local rules in force.
2.2 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.
2.3 Any chimney dampers or restrictors should be removed. If removal is not possible
they must be fixed in the open position.
2.4 In the United Kingdom (GB) special ventilation bricks or vents are not normally
required in the room for this appliance.
In the Republic of Ireland (IE), permanent ventilation must comply with the regulations
currently in force.

INSTALLER’S GUIDE
Page 5
Figure 1 Masonry Fireplace
2.5 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.
2.6 The minimum allowable distance from the outside of the appliance case to a corner
wall or other combustible surface which projects beyond the front of the appliance is
100mm at either side.
2.7 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.
2.8 The appliance must not be installed in any room, which contains a bath, or shower
or where steam is regularly present.
2.9 In the United Kingdom, as supplied, this appliance can be installed in the following
situations:-
2.9.1 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). Note the
relevant flat surface area
requirement – See figure 1. 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).

INSTALLER’S GUIDE
Page 6
Figure 3 Metal Flue Box
Figure 2 Pre-cast Fireplace
2.9.2 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 118mm. See figure 2.
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.
2.9.3 A metal flue box conforming to
BS715 with a minimum internal depth
of 150mm. 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. See figure 3.

INSTALLER’S GUIDE
Page 7
2.9.4 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.
2.10 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.
•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.
2.10.1 The minimum effective height of the flue must be 3m.
2.10.2 The flue must be clear of any obstruction and its base must be clear of debris.
2.10.3 The flue must be completely sealed so that combustion products do not come
into contact with combustible materials outside the chimney.
2.10.4 The flue must serve only one fireplace.
2.11 If the fireplace opening is an underfloor draught type, it must be sealed to stop any
draughts.
2.12 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.
2.13 A fireguard complying with BS6539 or BS6778 should be fitted for the protection
of young children, the elderly, or the infirm.
2.14 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.
2.15 This appliance may be installed with a surround with a minimum approved
temperature rating of 150 degrees. The fire surround must be sealed to the wall.

INSTALLER’S GUIDE
Page 8
Figure 5 Firefront minimum open areas
Figure 4 Hearth
2.16 The appliance must be
mounted on a non-combustible
hearth in accordance with
Figure 4. The hearth material
must have a minimum
thickness of 12.5mm (1/2”).
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.
2.17 The firefront must have
minimum open areas for air
flow as shown in figure 5.
2.18 Propane gas appliances
must not be installed in a room,
which is built entirely below
ground level (See BS 5871 Pt2).
2.19 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.

INSTALLER’S GUIDE
Page 9
3 PRE-INSTALLATION PREPARATION
3.1 Pack Contents
The carton contains the following:-
1Hotbox, Trims and Burner assembly
1 Casting pack
1 Literature Pack
1Loose parts pack including:-
1 Front coal Matrix 2 Tension Cables
1 Rear coal Matrix 2 Cable Adjusters
1 Loose coals Pack 1 Flue restrictor with 2 securing screws
1 Burner tray trim 2 Eyescrews
3 Self-Adhesive Foam seals 2 Fibre Plugs
1 Strip of Floor Sealing Tape
1 Nut and Olive for 8mm Inlet Pipe
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.
3.2 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.
3.3 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

INSTALLER’S GUIDE
Page 10
Fi
g
ure 6 Bendin
g
the Restricto
r
Figure 7 Fixing restrictor
Figure 8 Burner fixing points
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 6.
Fit the restrictor as shown in figure 7 using the
two screws provided.
3.4 Appliance Preparation
•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 discoloration around the burner
ports. There may also be slight thermal cracking
across the burner surface that is perfectly normal
and is not detrimental to performance.
•The burner assembly is retained by one
screw set in the front leg - See Figure 8. Remove
the screw and carefully remove the burner
assembly by lifting and sliding forward from the
firebox. The burner is produced from a soft
ceramic material and should be handled
carefully.
•A foam seal is supplied which will need
to be attached to the rear face of the firebox
frame on all three sides. Ensure that all joints
are butted together to prevent air gaps.
3.5 The Gas Supply Pipe
8mm rigid tubing must be used to connect the
gas supply to the appliance. An olive and nut are provided for connection to the “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.
3.5.1 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 sealed grommet at the back of the firebox and run to the
“T” connector.

INSTALLER’S GUIDE
Page 11
Figure 9 Cable Retention Method
Figure 10 Cable adjustment
4 FIREBOX INSTALLATION
4.1 Cable Retention
•Cables and
eyebolts are
supplied for the
retention of the
appliance.
Ensure that the
internal fireplace
components are
sufficiently sound
to take the
eyebolts and wall
plugs. These
should be fitted as
shown in figure 9
using the wall
plugs and a No.10
drill. Use only
the fibre wall
plugs supplied (or
similar). Never use plastic
plugs instead of the fibre
plugs supplied.
•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 end in the
adjacent slot. Pass the other end
of the cable through the eyebolt
& hole in the lower side of the
appliance and fit adjusters as
shown in figure 10.
•With the adjusters fully screwed in, carefully manoeuvre the appliance into the
fireplace opening. Take up any slack on the cables, and tighten cable nipples into
position.
•Tighten the appliance into the fireplace opening by turning the adjuster nuts to
compress the sealing foam sufficiently to provide an effective seal. Do not overtighten. If

INSTALLER’S GUIDE
Page 12
the sealing foam does not fully compress, then the adjusters and nipples may require to
be slackened and the cable pulled up tighter before re-tightening the adjuster.
•Do not cut off any excess cable, instead coil up the cable against the flange, as it may
be required for servicing purposes.
4.2 Floor Sealing
•Using the floor sealing tape supplied, seal the bottom of the convection box to the
fireplace and hearth floor. Run the tape over the burner-fixing bracket.
5 BURNER INSTALLATION
•Refit the burner unit to the appliance reattaching it to the front leg bracket by the screw.
•Connect the supply line to the appliance.
For side connection passing in front of the surround. The supply pipe will have to be
close to the inner face of the surround to the fire front casting to be correctly positioned.
For right hand side connection. The supply pipe will also have to be formed to go
behind the control knob and burner support bracket.
•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 check
in accordance with the rules in force. A long brush may be required to reach some joints.
5.1 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.
•If closed, open the isolating valve at the “T” connection.
•Depress the control knob and turn anticlockwise partially towards the “PILOT/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 “PILOT/IGN” position. A
spark should be generated at the pilot while turning. The spark should ignite the pilot. If
not turn the control knob back to the off position and repeat the procedure.
•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).
•When the pilot is alight and stable, partially depress the knob and turn to “LOW”.
The pilot should then light the main burner at its low setting. There may be a delay of up
to four seconds between the pilot lighting and ignition of the gas at the main burner. This

INSTALLER’S GUIDE
Page 13
is normal and is due to the time required to fill the main burner compartment with
sufficient gas for ignition.
•When the burner is operating properly, partially depress the control knob and
gradually turn it anti-clockwise. The burner flames should gradually increase until the
knob reaches the “HIGH” position.
•When all the checks have been completed partially depress the control knob and turn
to “OFF”.
•If 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.
5.2 Reference Pressure Check
The appliance is pre-set to give the correct heat input at the inlet pressure shown in the
Technical Specification section 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 situated below the bottom right corner of the burner unit. Check the
pressure with the appliance alight and set at maximum output.
•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.

INSTALLER’S GUIDE
Page 14
Figure 14 Front Base Coal
Position
Figure 13 Rear Base Coal
Position
Figure 12 Burner Tray Trim
Figure 11 Ceramic Rear Wall
Position
6 FITTING THE CERAMICS
1. Fit the ceramic rear wall into the bracket at the back of the firebox .See figure 11.
2. Fit the burner tray trim over the front rim of the
burner tray. Push the trim fully down. See figure 12.
3. Place the rear base coal in the firebox. It should
rest on the ledges at the sides and back of the firebox and
its rear face should
touch the rear ceramic
wall. See figure 13.
4. Place the front
base coal in the
firebox with its
bottom front locating
over the front rim of
the firebox. Pull the
coal forward so that
it locates
immediately behind
the front rim of the
firebox. See figure
14.
5. There are two
types of loose coals.
These are identified
with the letter “A” or
“B” on the underside
of the coal.
There are three “A”
coals and two “B” coals.

INSTALLER’S GUIDE
Page 15
Figure 19
Figure 18
Figure 17
Figure 16
Figure 15
6. Place a type “A” coal between
the front and rear base coals with the
letter “A” upright and so that the coal
is against the left side of the firebox.
See figure 15.
7. Place a type “B” coal between
the front and rear base coals as shown
in figure 16. The letter “B” should be
upright.
8. Place a type “A” coal between
the front and rear base coals with the
letter “A” upright. The top of the coal
should rest against the centre coal of
the rear base coal as shown in figure
17.
9. Place the remaining type “B”
coal at the right side of the firebox
between the front and rear base coals.
The letter “B” should be upright. The
coal should touch the right side of the
firebox. See figure 18.
10. Place the remaining type “A”
coal between the front and rear
base coals. The letter “A”
should be upside down with its
rear face between the right and
centre coals of the rear base
coal. Angle the coal so that the
gap between it and the type “B”
coal to its right is appreciably
larger than the gap between it
and the type “A” coal to its left
but do not have it touching the
type “A” coal. This will give
the best flame effect. See figure
19.

INSTALLER’S GUIDE
Page 16
Figure 21 Spillage check
7 FULL OPERATING CHECKS
7.1 Recheck Control Settings
Now that all the ceramic fuel effects are in position, the control operation must be fully
rechecked.
•Make sure that the isolating valve at the inlet elbow is open.
•Depress the control knob and turn anti-clockwise partially towards the “PILOT/IGN”
position. A spark should be generated at the pilot while turning. The spark should ignite
the pilot. Check that the pilot flame is visible.
•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 pilot orifice is clear.
•When the pilot is alight and stable, partially depress the knob and turn to “LOW”. The
pilot should then light the main burner at its low setting. There may be a delay of up to
four seconds between the pilot lighting and ignition of the gas at the main burner. This is
normal and is due to the time required to fill the main burner compartment with sufficient
gas for ignition.
•When the burner is operating properly, partially depress the knob and gradually turn it
anti-clockwise. The burner flames should gradually increase until the knob reaches the
“HIGH” position.
•Partially depress the control knob and turn back the
“PILOT/IGN”. The main burner flames should be
extinguished but the pilot should remain alight.
•Partially depress the control knob and turn to “OFF”
the pilot should be extinguished.
7.2 Check for Spillage
A spillage check must be made before leaving the
installed appliance with the customer. Make this
check with the appliance fully installed with the
ceramic fuel effects and front surround in position.
•Close all doors and windows in the room containing
the appliance.
•Light the appliance and turn the control knob to “HIGH”.
•Leave the appliance on for five minutes.
•Place the smoke match into the appliance canopy. See Figure 21.

INSTALLER’S GUIDE
Page 17
•The installation is satisfactory if the smoke is drawn into the appliance. If the smoke is
not drawn into the appliance, 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,
inspect the sealing to the fireplace surround. If the sealing is satisfactory but the appliance
is installed with the flue restrictor (see section 3.3), remove the restrictor, reseal the
appliance and retest. If smoke is still not drawn into the appliance, disconnect the
appliance and seek expert advice.
•If the above test is satisfactory, open all internal connecting doors, hatches, etc., in the
room. Keep all doors and windows that open to the outside of the building closed.
Recheck for spillage as above. If an extractor fan is installed in the same room as the
appliance or a connecting room, check that spillage does not occur with the fan operating
and all doors and other openings between the fan and the appliance open. If the smoke is
drawn into the appliance, continue with the installation. If the test is not satisfactory,
disconnect the appliance and advise the customer of the cause of failure.
7.3 Flame Supervision & Spillage Monitoring System
The pilot unit incorporates a system which will automatically shut off the gas supply if
the pilot flame goes out or if there is insufficient oxygen due to spillage or lack of
ventilation.
Check that the system operates properly as follows;
•Light the appliance. Set at the “HIGH” position and leave for one minute.
•Turn back to “OFF” to extinguish the pilot. Note the time when the pilot goes out.
Listen for a snap sound at the gas tap. Note the time when the sound is heard. This
sound is caused by an electromagnetic valve shutting off the gas supply through the tap.
The valve is located in the body of the tap. The valve should operate within 60 seconds
of the pilot going out. If the valve does not operate within this time limit do not allow
the appliance to be used until the fault has been corrected.
This monitoring system must not be adjusted, bypassed or put out of operation.
This monitoring system, or any of its parts, must only be exchanged using
Wonderfire authorised parts.

INSTALLER’S GUIDE
Page 18
8 FINAL REVIEW
•Place the front casting in position between the sides of the front surround and place
the bottom front cover casting below the front casting. Note that the front castings must
have minimum open areas as shown in figure 5 on page 8.
•Visually inspect the appliance. Clean off any marks incurred during installation.
•Advise the customer how to operate the fire.
•Explain to the customer that the appliance has a flame failure and spillage monitoring
system. Point out the explanation of this system shown in the owner’s guide.
Advise that if the fire goes out for any reason, wait at least three minutes before
relighting.
Stress that if the monitoring system repeatedly shuts off the fire, the appliance should be
switched off and a specialist should be consulted.
•Advise that the fire may give off a slight odour while new. This is quite normal and it
will disappear after a short period of use.
•Advise that any cleaning must only be carried out when the fire is off and cold.
•Advise the customer that they should read the Owner’s guide before operating the fire
and always follow the advice in the section headed “Cleaning your fire”.
•Advise the customer that the appliance will operate to its maximum potential if the
flue is primed during the first 20 – 30 minutes of use. To do this, simply turn the control
to its highest setting. This will also burn off any carbon deposits that may have formed
during previous use.
If using the appliance for long periods it is beneficial to change between settings. This
will also help to remove any carbon deposits that may form during use.
•Recommend that the appliance should be serviced and the chimney inspected by a
competent person (In the UK a CORGI registered person) at least annually.
If the appliance is in premises in the United Kingdom occupied by a tenant, point out that
by law a landlord must have any gas appliance, flue and pipework which is situated in a
tenant’s premises checked for safety at least every 12 months.
•Advise the customer that the castings, front surround, firebox and ceramic pieces can
be cleaned as described in the user’s instructions and that the coal pieces must be replace
as described in those instructions.
Stress that no extra coals must be added over and above those supplied with the
appliance and that any replacements must only be the authorised spares. Warn that
ignoring this advice could cause incomplete clearance of the products of combustion
with consequent health hazards.
•Hand the literature pack with this guide to the customer.

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9 SERVICING & PARTS REPLACEMENT
Always turn off the gas supply before commencing any servicing (The appliance
inlet “T” connector incorporates an isolating valve).
It is recommended that, at least once a year, the appliance is disconnected and the
fireplace opening checked and cleared of any debris.
This product uses fuel effect pieces, burner compartment rear wall and gaskets
containing Refractory Ceramic Fibres (RCF), which are man-made vitreous silicate
fibres. Excessive exposure to these materials may cause temporary irritation to eyes,
skin and respiratory tract. Consequently, it makes sense 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.
•Check that the appliance is clean and that soot or debris is not blocking the gaps
between the coals causing an imperfect flame.
•Check that soot or debris is not impairing the electrode spark or pilot burner.
•Check that soot or debris is not blocking any of the slots in the main burner.
•After servicing, make sure that the ceramic rear wall and coals are replaced correctly
as described in the installation instructions.
•Always test for gas soundness and spillage after servicing the appliance.
9.1 To Replace Burner Plaques
•Remove the five loose coals, front base coal, and rear base coal.
•Remove the plaque clamping strips by detaching 6 screws.
•Remove the plaques and the combination gasket between and under the plaques. If
necessary remove the gauze and the gasket beneath it.
•If necessary fit a new gasket below the gauze. Clean and replace the gauze. Fit a new
combination gasket below the plaques. Push the gasket ends inwards to form a dividing
gasket between the plaques.
•Place the new left hand plaque in position. The left side of the plaque must touch the

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Page 20
inside edge of the retaining flange at the left side of the burner well.
•Place the new right hand plaque in position. Make sure that the centre section of the
combination plaque is between the two plaques. If there is any play between the plaques
and the end retaining flanges, push the plaques firmly to the left squeezing the centre
section of the combination gasket between the two plaques. Any gap should be between
the right side of the plaque and the right side-retaining flange.
•Fit the front and rear plaque clamping strips. Make sure that the plaques are as far to the
left as possible. It is important that the left side plaque is accurately positioned so
that it has the correct relationship to the pilot. Fully tighten the clamping strips.
•Refit the ceramic fuel effects and rear wall as described in this manual.
9.2 To Remove the Complete Burner Unit
•Remove the five loose coals, front base coal, and rear base coal.
•Support the inlet isolating elbow to avoid straining the pipework and disconnect the
appliance from the elbow.
•Detach the burner unit from the hotbox by removing 1 screw (As shown in figure 8).
•Replace in the reverse order.
9.3 To Remove the Pilot Unit
•Remove the complete burner unit - See section 9.2.
•Disconnect the electrode lead from the tab underneath the electrode.
•Undo the thermocouple nut at the gas tap.
•Disconnect the pilot pipe from the pilot unit elbow.
•Remove the first screw securing the dust cage to the pilot unit & burner bracket.
Carefully remove the dust cage and place aside. Remove the second screw securing the
pilot unit to the burner. Remove the pilot unit and place it aside.
•Refit in the reverse order
Note 1 The pilot unit must be replaced as a whole assembly. Its individual components
are not separately replaceable.
2. Once removed, ensure that the dust cage is cleaned before refitting. Make sure
that it locates squarely onto the pilot unit without any gaps between the cage
edges and the pilot unit.
9.4 To Remove the Gas Tap
•Remove the complete burner unit - See section 9.2.
•Disconnect the electrode lead from the tab underneath the electrode.
•Undo the thermocouple nut at the gas tap.
•Disconnect the inlet pipe at the tap end
•Disconnect the pilot pipe at the tap end.