Charlton & Jenrick Infinity 780 BF User manual

Owner’s Manual
INCLUDES
User, Maintenance, Service, and Installation
Instructions
780 BF
Keep this booklet for service log and future reference
For use in Great Britain and Ireland.
Literature NO 6863 (ISS 02)
IMPORTANT
This appliance is guaranteed for 12 months subject to conditions. The 5 year extended parts
warranty will only be valid if the annual service recommended in this manual has been
completed and appliance has been registered online.

Contents
EXTENDED FIVE YEAR PARTS WARRANTY ....................2
Benchmark Scheme .....................................................3
SECTION ONE Important Information (users
instructions).................................................................5
SECTION TWO Introduction (users instructions)........7
SECTION THREE Operation (users instructions) .........7
SECTION FOUR Cleaning & Laying the fuel bed (users
instructions)...............................................................10
SECTION FIVE Appliance Data (installation
instructions)...............................................................14
SECTION SIX Regulations and Warnings (installation
instruction) ................................................................15
SECTION SEVEN Siting the Appliance (installation
instructions)...............................................................16
SECTION EIGHT Preparing the Appliance for
Installation (installation instructions) ......................17
SECTION NINE CONNECTING THE GAS SUPPLY ........21
SECTION TEN Assemble the appliance (installation
instructions)...............................................................22
SECTION ELEVEN Instruct and Advise the Customer
(installation instructions)..........................................23
SECTION TWELVE (Maintenance Instructions).........23
SECTION TWELVE Wiring Diagram (maintenance
instructions)...........................................................25
BALANCED FLUE GAS FIRE COMMISSIONING
CHECKLIST ..................................................................30
SERVICE RECORD........................................................31
EXTENDED FIVE YEAR PARTS
WARRANTY
In order to validate your extended 5 years parts
warranty
please read the Benchmark Scheme on the
opposite page and ensure your installer has filled in the
appropriate checklist.
This in no way reduces your statutory rights
Your warranty commences from the date of purchase
and you must retain your receipt or invoice as proof of
a
purchase date.
THIS EXTENDED WARRANTY SPECIFICALLY EXCLUDES
GLASS
AND SOFT REFRACTORY COMPONENTS, THE BULB
AND ANY BATTERIES.
Terms and Conditions
1. The appliance must be installed by a GAS SAFE
registered person.
2. The appliance must be used in accordance with
the
user’s instructions.
3. The appliance must be serviced annually by a GAS
SAFE
registered person.
4. The benchmark and service log must be correctly
filled
out and the record of annual services must be up
to date
and supported by receipts in each case.
5. This warranty is not transferable and relates to the
original installation only.
6. The appliance has not been subjected to misuse or
accident or been modified or repaired by any
person
other than the authorised employee or
authorised
representative of Charlton and Jenrick
Ltd.
7. The registration form must be returned within 1
month
of purchase.
Technical Help Desk 01952 200 444

www.charltonandjenrick.co.uk 3 LT6863 (ISS 02)
Benchmark Scheme
Charlton and Jenrick Ltd is a licensed member of the Benchmark Scheme which aims to improve the standards of
installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing
to optimise safety, efficiency and performance. Benchmark is managed and promoted by the Heating and Hotwater
Industry Council. For more information and the full code of practice please visit www.centralheating.co.uk
Please ensure that the installer has fully completed the Benchmark Checklist on the inside back pages of the installation
instructions supplied with the product and that you have signed it to say that you have received a full and clear
explanation of its operation. The installer is legally required to complete a commissioning checklist as a means of
complying with the appropriate Building Regulations (England and Wales).
All installations must be notified to Local Area Building Control either directly or through a Competent Persons Scheme.
A Building Regulations Compliance Certificate will then be issued to the customer who should, on receipt, write the
Notification Number on the Benchmark Checklist.
This product should be serviced regularly to optimise its safety, efficiency and performance. The service engineer
should complete the relevant Service Record on the Benchmark Checklist after each service.
The Benchmark Checklist will be required in the event of any warranty.
It is a requirement that the gas fire is installed and commissioned to the manufacturer’s instructions and the data fields
on the commissioning checklist completed in full.
To instigate the guarantee, the gas fire needs to be registered with the manufacturer within one month of the
installation.
To maintain the guarantee, it is essential that the gas fire is serviced annually by a Gas Safe registered engineer. The
service details should be recorded on the Benchmark Service Interval Record and left with the householder.

4 LT6863 (ISS 02)
Installer information required to register for the extended warranty
Name:
Date of installation:
Gas safe number:
Important
For future reference we suggest you record the following details here, and keep the receipt as proof of purchase.
This information may be asked for when you contact the helpdesk.
MODEL:
INFINITY 780 BF
Serial No.
This information can be found on the label attached to the packaging and on the data badge, which is located on
the base of the appliance behind the control cover.
Retailer Name:
Address:
Date Of Purchase:

www.charltonandjenrick.co.uk 5 LT6863 (ISS 02)
SECTION ONE Important Information (users instructions)
Consumer protection information
As manufacturers and suppliers of heating products, we take every care, as far as is reasonably practicable, that these
products are so designed and constructed as to meet the general safety requirement when properly used and installed.
To this end, our products are thoroughly tested and examined before despatch.
IMPORTANT NOTICE: Any alteration that is not approved by the appliance manufacturer could invalidate the approval
of the appliance, operation of the warranty and could affect your statutory rights.
Health and safety notice
Important
This appliance could contain some of the materials, indicated below, that could be interpreted as being injurious to
health and safety. It is the users / installers responsibility to ensure that the necessary personal protective clothing is
worn when handling these materials, see below for information.
Artificial Fuels, Mineral Wool, Insulation Material, Refractory/Ceramic Fibres, Glass Yarn - may be harmful if inhaled,
may be irritating to skin, eyes, nose and throat.
When handling avoid inhaling and contact with skin or eyes. Use disposable gloves, facemasks and eye protection.
After handling wash hands and other exposed parts. If a vacuum is used for cleaning the coals or cleaning after servicing
/ installation it is recommended that it be of the type fitted with a HEPA filter.
Disposal of refractory/ceramic materials. To keep dust to a minimum these materials should be securely wrapped in
polythene and be clearly labelled ‘RCF waste’. These materials are not classified as ‘hazardous waste’ and should be
disposed of at a site licensed for the disposal of industrial waste.
INTRODUCTION
The INFINITY 780 BF is an inset room sealed decorative fuel-effect gas appliance.
The INFINITY 780 BF is available in Natural Gas only.
The INFINITY 780 BF must not be installed into a natural draught flue or chimney.
The INFINITY 780 BF should only be installed and serviced by a competent person i.e. GAS SAFE registered, in
accordance with the GAS SAFETY (INSTALLATION AND USE) REGULATIONS.
The INFINITY 780 BF does not require a chimney, but must be installed against an outside wall.
It is important that the flue terminal is regularly checked and kept clear at all times.
If the terminal is accessible to people (i.e. less than 2m above a walkway, balcony etc.) the terminal guard
must be fitted to prevent access to the flue outlet, which becomes hot when the fire is in use.
As the INFINITY 780 BF is a room sealed appliance (i.e. air for the combustion process is taken from outside
the room) no purpose built ventilation is required.
The INFINITY 780 BF is designed and tested to meet the requirements of the European Standard EN 613.

6 LT6863 (ISS 02)
The INFINITY 780 BF is battery operated; therefore no mains electrical supply is required. Power to the appliance is
provided by 6 high power alkaline 1.5V batteries (“C” size) (a spare set of 6 “C” batteries is supplied with the
appliance
An audible repeated bleep warning indicates that the appliance batteries need changing or charging (if rechargeable
batteries have been used).
Important: Batteries should be changed as soon as possible as the appliance will not light if the battery
power gets to low.
The Appliance is for use on Natural Gas (G20 @ 20mbar) only.
Failure to install appliance correctly could lead to prosecution.
In GB (Great Britain), the appliance must be installed by a competent person i.e. GAS SAFE registered, in
accordance with the GAS SAFETY (INSTALLATION AND USE) REGULATIONS, The Building Regulations (or The
Building Regulations (Scotland) or The Building Regulations (Northern Ireland)) and The Current I.E.E. Wiring
Regulations, if appropriate.
In IE (Ireland), the appliance must be installed by a competent person and installed in accordance with the
current edition of I.S.813 Domestic Gas Installation, the current Building Regulations and the current ETCI
rules for electrical installation, if appropriate.
Although the INFINITY 780 BF is fitted with a glass front which acts as a dress guard it is strongly
recommended that a fireguard should be used for the protection of children, the elderly or infirm.
Fireguards should conform to B. S. 6539 (1984) (Fireguards for use with solid fuel appliance).
Care should be taken to prevent any damage being caused to surrounding soft furnishings or decoration.
Many wall coverings may become discoloured if placed too close to the appliance, it is strongly
recommended that any proposed wall covering intended for use immediately above the appliance should be
tested in the hottest position (immediately above) first. Run the fire on high over a few days
All combustible material must be removed from behind the fire and fire trim.
The first time you light your new appliance a smell may occur due to its new condition. This is quite normal
and will soon disappear after a few hours use at maximum setting (open a window until the smell
disappears)
With use the inside of the air box will change colour, particularly the sides and rear. This is quite normal and
often adds to the overall effects of the appliance.
The appliance MUST NOT be used if the glass panel is not correctly fitted or if this panel is cracked or
broken.
Any debris should be cleaned from the appliance. A vacuum cleaner can be used but only after all the loose
shapes have been removed.
Prior to removing or cleaning the logs refer to the ‘Health and Safety Notice’ located on page 3 of this
booklet.
The appliance should be serviced annually by a competent person i.e. a GAS SAFE registered engineer in
accordance with these instructions.
The glass or any part of the appliance MUST NOT be cleaned or wiped whilst the appliance is HOT, to do so
could be dangerous and may damage the paintwork of the appliance.

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SECTION TWO Introduction (users instructions)
The INFINITY 780 BF is an inset room sealed decorative fuel-effect gas appliance designed for use in locations
that do not have a conventional chimney. The appliance must be installed against an outside wall because
the air to support combustion is taken from the outside and the products of combustion are expelled to the
outside.
The appliance incorporates a safety device in the form of a FLAME SUPERVISION DEVICE, which constantly
monitors the flame and will cause the gas to be switched off if the flames are extinguished for any reason.
THIS DEVICE MUST NOT BE OVERRIDDEN. If this situation occurs on a regular basis have the appliance
checked by a qualified engineer. The problem may be due to a blocked or restricted flue.
Before removing the, trim, glass shapes for cleaning the fire should be turned off, and left to cool down.
NOTE: In use some discoloration of the components will take place in the combustion box, this is normal, but
can be kept to a minimum if the shapes are placed correctly (i.e. after cleaning). See Section 4.
As with all heating appliances certain areas (Working Surfaces) become very hot when the appliance is in
use.
SECTION THREE Operation (users instructions)
To light the appliance using the remote hand set:
A. Point the remote control hand set in the direction of the
appliance and press the button. Continue to hold the
button for approximately 2 seconds and release. When
released a bleep should be and heard the appliance will
automatically go through the ignition sequence and the
pilot should ignite. Once the pilot is alight the appliance
will automatically go to the high setting (approximately
20-25sec).
B. If the ignitor stops sparking and the pilot fails to light press
the button for at least 2 seconds and release, again a
bleep should be heard. Then repeat the lighting procedure.
C. With the appliance lit, by pressing key the operational mode is switched from manual to Room thermostat
setting and vice versa. When Room thermostat mode is active, the display shows the set temperature value
and the “AUTO” icon will appear on the LCD display. By using the arrow key the desired room temperature
can be set. When manual mode is active, the display shows the “MAN” icon plus the flame icon and a five
level bar icon setting. By pressing the arrow key, the flame picture can be adjusted at five stages between
high and low flame. If level 5 is currently active, the icon max below the flame icon will appear.
D. To switch off the appliance press the button for at least 2 seconds and on releasing the button the
appliance will bleep and then shut off. For pilot setting press the for 1 second and release.The pilot symbol
will appear on the LCD display.Pressing the button will bring the fire back onto main flame.
E. The appliance can be switched off with out using the hand set by removing the appliance batteries located
below the air grill cover. When the batteries are removed there will be a delay (up 3minutes) after which,
double bleeps may be heard and shortly after the appliance will extinguish. Ensure that the battery is
reconnected once the fire as been extinguished. The appliance cannot be operated without the use of the
handset.

8 LT6863 (ISS 02)
Room Thermostat mode
The remote handset checks the room temperature at a fixed time intervals. Depending on the difference between
set room temperature and the actual room temperature the remote proceeds to modulate in one level steps. Once
the room temperature is reached it moves to standby position pilot only.
The icon “PILOT” will appear on the LCD display. As soon as the actual room temperature falls below the SET room
temperature, the system will move from standby to the high flame level. From this point it will proceed again the
modulation process.
Note: Due to the temperature checks at timed intervals, the display temperature on the handset may exceed the
room setting temperature before the appliance defaults to the pilot setting.
To Replace Battery In Hand Set (3 AAA type batteries)
Remove the cover from the rear of the handset and fit replacement battery.
Clock Regulation
As soon as the batteries are fitted the timer digits will blink. Using the arrow key increase
or decrease the hour, minutes and week`s value. By pressing the Owill set and shift setting
until complete.
Changing Clock Setting During Operation
To amend timer setting press both the and O keys simultaneously for three seconds, the written clock will
appear. To change the clock settings, repeat the above described operation.
Change From Celsius to Fahrenheit
With remote OFF, keeping pressed key at least for 5 seconds, the temperature unit changes from Celsius to
Fahrenheit degrees and vice versa.
Battery level indication (Handset)
When the batteries have to be changed in the handset, the related icon will appear.
Setting the sleep mode
To activate the sleep mode: With the fire switched on press the O button. The sleep symbol will appear top
right. The sleep symbol replaces the time indicator in this mode. Using the arrow key increase the sleep mode in
15-minute intervals (a small star will be visible next to the sleep symbol once any time is set) .Once the set time
is reached, the fire will completely switch off without any further intervention.

www.charltonandjenrick.co.uk 9 LT6863 (ISS 02)
To Deactivate the sleep mode:
When the fire is next operated, the sleep mode will automatically appear unless it is re-set to zero. This can be done
by pressing the O key and using the button to decrease the time set by 15 minute intervals until back to zero.
If you experience unexplained outing on the fire please check that the sleep mode is switched off.
Child Lock (Handset)
To activate `Child Lock` : Press and hold the Mode Key O button for 5 seconds, this will lock and disable the
handset and a “padlock” symbol will appear on the bottom of the screen. This can be done while the fire is “off” or
“on”. To deactivate this function press and hold the Mode Key O for 5 seconds and the “padlock” symbol will
disappear.
LOW BATTERY INDICATION (APPLIANCE)
If you hear a repeated ‘bleep’ sound come from the appliance this indicates the appliance battery pack is low and
should be changed. If this is ignored the system will go into a lock out mode, which will not allow the appliance to be
used until a new set of batteries are loaded.
NOTE: The appliance cannot be used when the battery is completely discharged.
TO REPLACE APPLIANCE BATTERIES (6 High Power Alkaline C 1.5V)
A. Remove the Decorative in fills LH and RH.
B. Lift and remove the inlet cover located within the fireplace frame.( This is located at the bottom of the fire
between the glass panel and fireplace frame.
C. Remove the battery holder from within the battery holder and replace the six high power alkaline C batteries
as a complete set.
WARNING, batteries will overheat if fitted incorrectly, when fitting the batteries ensure that they are fitted as per
the marking on the rear of the holder (i.e. minus of battery against spring).
D. Once the new batteries are loaded the fire will continue to bleep until re-set. Press the ON / OFF key for at
least 2 seconds, on release a bleep sound will be heard and the ignition process will start. If the fire
continues to bleep this may indicate a loose connection or badly loaded batteries.

10 LT6863 (ISS 02)
SECTION FOUR Cleaning & Laying the fuel bed (users instructions)
Warning:-Before you clean any part of the appliance ensure that the appliance is switched off and cool.
CLEANING: BLACK PAINTED SURFACES
These surfaces should be dusted regularly and any marks removed with a soft cloth.
Abrasive or chemical cleaner should never be used.
CLEANING: GLASS PANEL
From time to time it may be necessary to clean the glass
panel.
We recommend you use a Ceramic Hob Cleaner (brands
such as HOB BRITE and VITRO CLEN have been found to be
acceptable) these are available from most leading
Supermarkets.
Remove the glass panel as follows:
Carefully lift out the in fill covers LH and RH.
Remove the top fixing cover.
Remove the three of fixing bracket located on the top and sides of the glass panel.
Carefully lift the glass panel up out off the bottom location. Lay the glass panel down on a flat working
surface on top of an old opened newspaper with
the side to be cleaned uppermost.
Follow the Instructions on the Hob Cleaner Bottle.
On stubborn stains (where the appliance has been used for
a long period without glass panel being cleaned), use a new
Brillo Pad well wetted with the Hob cleaner applied directly
to it.
Ensure all the residues of the cleaner are removed with a
damp cloth and the glass panel is completely dry before
fitting to the appliance.
Note: - If the loose shapes have not been placed correctly,
causing the gas flame to contact the glass this may result in
glass staining that cannot be removed by cleaning.
Re-assemble in reverse order ensuring a tight seal against glass assembly.
Re-fit the fascia.

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CLEANING AND REPLACING fuel bed shapes
Important: - Refer to the ‘Health & Safety Notice located on page 3 of this booklet before cleaning or
replacing any refractory material.
Use only the shapes provided NO OTHER SHAPES SHOULD BE ADDED to the appliance
The Fuel bed set consists of:
11 Log Shapes.
Bark chippings
1 Bag Embaglow
Log Fuel Bed Layout.
Within this packed appliance is one packet of Ember glow. Only half of the packet should be used per install, the
spare half of the pack is provided for the first annual service. Failure to place the correct amount of flakes and in
the correct burner area can result in producing a poor flame picture and sooty deposits.
Make sure the grouped burner ports highlighted are free of embaglow

12 LT6863 (ISS 02)
Lay the bark chippings and small log shape as shown.
Place two log shapes upon the shelf above the inlet baffle as shown.

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Place a further two log shapes along the front edge of the burner cover.
Place a further two log shapes as shown.
Place a further two log shapes as shown.
Place a further two log shapes as shown.
Finally place a further two log shapes as shown.

14 LT6863 (ISS 02)
SECTION FIVE Appliance Data (installation instructions)
Fire Box dimensions: Height 740mm
Width 843mm
Forward Projection: 42mm
Weight: 35kg
Flue Length………………………………………...100mm (minimum) to 600mm (maximum)
No bends or joined flue pipes should be used in the flue system.
Pressure Test Point Location: Gas inlet elbow
Gas Connection: 8.0mm O/D, tube.
Data Badge Location: On bottom right hand side of firebox behind trim.
MODEL
Natural Gas (G20) Version
Category of appliance
CII
NOXClass
4
Efficiency Class
1
Gas Category
I2H
Gas Type
G20 Natural Gas
Gas Pressure +/- 1.0mbar
20 mbar
Gas Input (Max)
5.1 KW Gross
(Min)
2.4 kW Gross
Injectors size
MK360A Mark
NOTE: The efficiency of this appliance has been measured as specified in BS EN613-2001 and the result is 75.8%
natural gas. The gross calorific value of the fuel has been used for this efficiency calculation. Gastec have certified
the test data from which it has been calculated. The efficiency value maybe used in the UK Government’s Standard
Assessment Procedure (SAP) for energy rating of dwellings.

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SECTION SIX Regulations and Warnings (installation instruction)
This appliance must only be installed in Great Britain or Ireland.
The appliance is available in natural gas only.
This appliance must be installed on a suitable outside wall.
No special ventilation bricks or vents are required into the room containing the appliance.
In GB (Great Britain)
It is the law that all gas appliances must be installed by a competent person; i.e. a GAS SAFE registered installer, in
accordance with the current Gas Safety (Installation and Use) Regulations (as amended), all relevant parts of the
local and national building regulations and all relevant recommendations of the current British Standards. Failure to
do so could lead to prosecution.
The following are the relevant codes of practice and British Standards: -
B.S. 5871 PART 2 B.S. 5440 PART 1
B.S. 6891 B.S. 1945
Note:- This appliance must be installed to current versions of the above standards and include any relevant
amendments.
The Building Regulations issued by The Department of the Environment.
The Building Standards (Scotland) (Consolidated) Regulations issued by The Scottish Development Office.
IN IE, (Ireland)
The appliance must be installed by a competent person and installed in accordance with the current edition of
I.S.813 Domestic Gas Installation, the current building regulations, and the current ETCI rules for electrical
installation, if appropriate.
WARNINGS
As this appliance has components, which get very hot as with all such fires, it is recommended that a
fireguard should be used for the protection of children, the elderly, or the infirm. Fireguards should conform
to B.S.6539 (1984) (Fireguards for use with solid fuel appliances).
During initial use, an odour may be evident. This will soon disappear if the fire is run on its maximum setting
for a few hours.
Care must be taken to prevent any damage being caused to surrounding soft furnishing or decoration, e.g.
wall coverings may become discoloured if placed too close to the appliance.

16 LT6863 (ISS 02)
SECTION SEVEN Siting the Appliance (installation instructions)
(When installing in a timber framed dwelling reference must be made to the specific installation requirements stated
in Section 8 Installing the Appliance in Timber Framed Dwelling).
GENERAL REQUIREMENTS
The flue and air duct length must be between 100mm to 600mm.
The fire is supplied with a standard pipe length of 600mm.
The flue and air duct must not have any bends.
The flue outlet must terminate on a suitable outside wall.
The minimum flue terminal clearances, which must be maintained, are as shown below.
A. Directly below an openable window or other opening. E.g. air brick 300mm
B. Below gutters, soil pipes or drain pipes 300mm
C. Below eaves 300mm
D. Below balconies or carport roofs 600mm
E. From vertical drain pipes and soil pipes 75mm
F. From internal and external corners 300mm
G. Above ground, roof or balcony level 370mm
H. From a surface facing the terminal 600mm
I. From a terminal facing the terminal 1200mm
J. From an opening in a car port into a dwelling e.g. door, window, etc 1200mm
K. Vertically from a terminal on the same wall 1500mm
L. Horizontally from a terminal on the same wall 300mm
Please note with early cavity wall design prior to 1970. The minimum depth requirement may well be difficult to
obtain. This could result in the need for the firebox to be spaced further from the internal surface of the plaster
and to achieve this larger rebated surround maybe necessary.

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Ensure that gas supply is suitably sited
Check with the supplier or manufacturer that
the surround meets 1500C minimum rating
(attention should especially be given to
manmade materials such as resin).
When installing in a timber framed dwelling
reference must be made to the specific
installation requirements stated in
Clearance to Shelf
Minimum clearance from hearth or base of opening to
underside of combustible shelf should be 880mm
provided the shelf depth is 75mm (3”). This gives a
minimum clearance above the appliance of 140mm.
For a shelf of 150mm (6”) the minimum height above
the hearth or base of opening must be 960mm. This
will give a minimum clearance above the appliance of 220mm.
Clearance to Sides of Fire
Minimum width between vertical sides of combustible surround should not be less than 875 mm provided fire is
central to the surround and sides do not project more than 150 mm. When vertical side forward projection is
increased by 12.5 mm add 50 mm to inside width of surround.
SECTION EIGHT Preparing the Appliance for Installation (installation instructions)
Carefully unpack the appliance from the carton and check the contents.
Lift away the Box of ceramics, glass panel and Fire frame components.
Remove the refractory components from the inside of the packaging.
The appliance is now ready for installation.
INSTALLING THE APPLIANCE INTO CAVITY WALL Ensure it is a suitable outside wall constructed of non-combustible
materials and that the flue position meets the requirements previously described in Section 8.
Mark a vertical line on the wall at the intended centre of the appliance up from the horizontal line for a height
of 887mm.
If insetting into the wall mark the position for a lintel (Minimum 1040mm) above the top horizontal line.
Using a long masonry drill, make one pilot holes completely through the wall. Ensure the holes are drilled
accurately at the centres and square to the wall both horizontally and vertically at the cross points previously
marked.
If insetting into the wall proceed as follows: Cut out the brickwork of the inner skin of the cavity wall for the
lintel, and fix the lintel.
Cut out the brickwork under the lintel, between the two outside vertical lines into the cavity. Ensure the cutout
width is square and try the appliance into the opening.
ALL DIMENSIONS IN mm
B
“A
”
HEARTH TO SHELF
750 MIN
853 MIN
870 MAX.
170 MIN

18 LT6863 (ISS 02)
Using 150mm core drill cut a holes following the pilot holes. Drill from the outside through to the cavity to give a
good finish on the outside.
Remove any cavity insulation from the cutout opening and for a further 100mm into the cavity gap each side
and above.
Pack “Rockwool” around the sides and top of the opening into the cavity for a depth of 100mm. Also put
some behind the firebox if space is available.
Offer the appliance into the opening and mark through the gas pipe entry hole (see connecting the gas
supply section).
Pass a tape measure through the core-drilled holes and record the distance from the spigots to the surface
of the outside wall. Include the length of the spigots themselves in this measurement and increase both the
recorded distances by 15mm (5/8”) each for the engagement allowance.
Remove the appliance from the opening, and position the gas supply (see connecting the gas supply later in
this manual), taking account of the relative gas regulations regarding a gas pipe in a cavity (sleeving and
sealing etc). Note the gas feed must be fitted with an isolation valve supplied.
Push the appliance back into the opening and fill any space behind the appliance with “Rockwool”.
Complete the gas connection (see connecting the gas supply later in this manual).
Drill the four fixing holes through the hole in the flange of the appliance and fix back using plug and screws.
If the flue outlet is fitted below 2m from the floor or a balcony then the flue terminal guard must be fitted.
MARKING OUT WALL FOR
CAVITY RECESSED
INSTALLATIONS
FLOORSURFACE
CENTRELINEOF
INSTALLATION
HEARTH SURFACE LINE
OR BASE LINE FOR
HOLE IN WALL (150mm min. from floor)
MARK POSITION
OF LINTEL
605.00
490.00
63
1
750
Measurement taken from
floor Level to the flue pilot
height and lintel minimum
clearance

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TIMBER FRAMED DWELLING
This method allows for installation in timber frame buildings. Where removal of any part of the inner timber leaf
of the wall is involved the structural integrity of the wall must be maintained and the advice of your local Building
Control Department should be sought. If the property is under N.H.B.C. cover, it is advised that their advice
should also be sought. Reference should be made to the British Gas Publication DM2 "Guide For Gas Installations
In Timber Frame Housing" or Gas Safe “Gas installations in Timber Frame Buildings” ISBN1-902632-30-3
Special attention must be paid to the location of the studwork frames of the inner leaf and the appliance positioned
accordingly. Electrical cables and pipe work that run within the inner timber leaf must also be located and taken into
account when positioning the appliance.
Find a suitable position between the wall panel frames and carefully open the hole (minimum dimension
1065mm wide x 850mm High). The timber frame assemble included a frame adjustment bracket cover the
cavity depth . ( Min 200mm to 265mm Max). Careful attention must be made to secure the damp proof
membrane back into position.( Note : to achieve the minimum depth requirement it may be necessary to
deepen the cavity by building up the wall surface with an appropriate none combustible material.
The 2 weep vents within the kit should now be fitted using the guide lines below into the external brick.

20 LT6863 (ISS 02)
TIMBER FRAMED DWELLING
With the opening prepared slide the timber
frame within the opening. Secure the frame
assembly back using suitable screws and wall
plug.
Loosen the 8 fixing screws retaining the
adjustment bracket and slide against the rear
fascia brick surface. Secure using suitable
screws and wall plugs.
With the frame secured seal the adjustment
fixing bracket against the brick work face
using high temperature silicone sealant which is rated up to 300 degrees C.
Fit a piece of 10mm thick super lux board
within the support ledge LH and RH. The width
of the board will require to be cut to a length
of 975mm. To obtain the depth measurement
will depend on the cavity depth.
At this point routing of the gas suppy must be
carried out in line with the
recommendatations specified in the British
Gas Publication DM2 “Guide for gas
installation in Timber Frame Housing”.
Finally offer the Fire box
Assembly within the Timber
frame kit and retain using the
fixing screws provided.