Percy Doughty & Co Firefox 5CB Manual

Firefox 5CB (Clean Burn)
DEFRA APPROVED FOR BURNING WOOD IN A SMOKE CONTORLLED AREA
C
E
APPR
O
VED
.
This appliance must be installed by a competent person and must
comply with all building regulations including those referring to local
authority by-laws, National and European Codes of Practice . Unless the
installer is qualified to approve the installation, then approval must be
sought from your local building control officer. It is an offence under UK
law not to comply with this advice. After installation the appliance should
be ready for use and instruction as to use and control given.
Clean burn cast iron wood burning stove
Installation & o
p
eratin
g
instructions. To be left with user.
FFXCB01/10A

Health & Safety
- The Firefox 5 CB stove does not contain asbestos.
- Do not use in a shared flue.
- Do not use this appliance as an incinerator.
- Use only the recommended fuel – do not use liquid fuels.
- The surfaces, glass panel, and stove pipe reach very high temperatures. All
persons in the vicinity of the stove must be warned of the potential dangers
- No combustible materials to be within 450mm from any surface of the stove,
including the stove pipe.
- No soft furnishings to be within 900mm of stove surfaces or stove pipe.
- Fire cement contains caustic material, avoid contact with skin.
- Do not make any unauthorised modifications to this appliance.
- If replacement parts are required, use only parts recommended by manufacturer.
Fires can be dangerous - the Firefox 5 CB stove operates at very high temperatures.
Always use a fire guard to BS6539 specification in the presence of children, the
elderly or the infirm. Inform all persons the dangers of high temperatures during
operation of appliance including the stove pipe and use the operating tools
provided. The mitten provided is a tool.
Do not over fire - it is possible to fire the stove beyond its design capacity. This
could damage the stove, so watch for signs of over-firing, if any part of the stove
starts to glow red, the fire is in an over fire situation and the controls should be
adjusted accordingly. Never leave the stove unattended for long periods without
adjusting the controls to a safe setting. Careful air supply control should be
exercised at all times.
Warning- Fume emissions - properly installed and operated, this appliance will not
emit fumes. Occasionally fumes from de-ashing and refuelling may occur.
Persistent fume emission must NOT be tolerated.
If fume emission does persist, then following immediate action should be taken-
1. Open doors and windows to ventilate the room.
2. Let the fire out, or eject and safely dispose of fuel from the appliance.
3. Check for flue chimney blockage, and clean if required.
Do not attempt to relight the fire until the cause has been identified. If necessary
seek professional advice.
Do not fit an extractor fan in the same room as the appliance







ItemDescriptionPartNoQty
1FlueCollarFFX008CB1
2StoveTopPanelFFX003CB1
3StoveBackPanelFFX034CB1
4HeatShieldFFX030CB1
5CeramicChamberLiningFFX023CB1
6RightSidePanelFFX036CB1
7SideBrickFFX012CB1
8BackBrickFFX013CB1
9GrateRiddlingRod&KnobFFX015CB1
10AshPanFFX014CB1
11BasePanelFFX002CB1
12LegFFX010CB4
13DataPlateFFX031CB1
14FretFFX011CB1
15DoorHandleFFX016CB2
16PrimaryAirSlideKnobFFX022CB1
17PrimaryAirSlide FFX020CB1
18DoorFFX004CB1
19GlassFFX018CB1
20GrateSupportPlateFFX005CB1
21GrateFFX006CB1
22LeftSidePanelFFX036CB1
23SideBrickFFX012CB1
24FrontPanelFFX035CB1
25SecondaryAirDuctFFX024CB1
26TopBrickAssemblyFFX009CB1
Parts & Assembly
Stove Assembly
The stove legs will be found inside the stove, they will require fitting. The two front
legs have optional positions either at front of ash lip or rearward inline with body
panels. Two of the legs have holes for hearth fixing fit these in desired position.
Fitment of legs - lean stove backwards and prop under base panel, fit studs
supplied in desired position for legs, locate legs, fit washers and nuts and tighten.
Lean stove forwards and prop under base panel, fit rear legs using studs washers
and nuts provided. Note - the Firefox 5 CB is heavy take care when handling.

ItemDescriptionPartNoQty
27BafflePlateFFX007CB1
ItemsNotShownonDiagram
28GlassPanelSealFFX027CB1
29DoorSealFFX026CB1
30OperatingtoolFFX029CB1
31MittenFFX1CB1
32DoorCatchFFX017CB1
33DoorGlassRetainingTabsFFX019CB4
34HingePinFFX028CB2
35De‐ashingToolFFX039CB1

Installation
Check the chimney is in good condition, dry, free from cracks and obstructions. The
diameter of the flue should not be less than 150mm and not more than 230mm. If
any of these requirements are not met, the chimney should be lined by a suitable
method.
The chimney height and the position of the chimney terminal should conform to
Building Regulations.
A flue draught of minimum 12 Pascals water gauge is required for satisfactory
appliance performance. The flue draught should be checked under fire at high
output and if it exceeds the recommended maximum, a draught stabiliser must be
fitted so that the rate of burning can be controlled, and to prevent over firing.
If you have any doubts about the suitability of your chimney, consult your local
dealer/stockist.
The chimney must be swept before connection to the stove and swept every six
months thereafter. If there is an excessive build up of soot, then the chimney must
be swept and the reason for build up investigated.
An existing fireplace opening can be bricked up or sealed with a register plate,
2.5mm steel sheet or concrete. A short length of flue pipe no smaller in diameter
then the stove flue outlet or the manufacturer’s stated flue size may then be used to
connect the stove to the chimney. This flue pipe should be of cast iron, 316 grade
stainless steel or vitreous enamelled, nominal thickness 1.2mm. Ensure that the pipe
end is no closer than 76mm to the side or rear chimney walls.
Ideally, the old fireplace should be filled in so that there is a smooth streamlined
entry into the flueway.
The length of any horizontal run of the flue pipe must not exceed the flue outlet
diameter on the stove.
It is essential that all connections between the stove and chimney-flue are sealed
and made airtight.
Both chimney and flue pipe must be accessible for cleaning and if ALL parts of the
chimney cannot be reached through the stove, a soot door must be fitted to
enable this to be done.
If a change in direction is required in the pipe work then it should be no less than 45
degrees. If a 90 degree bend is required then a swept elbow should be used, or 2 x
45 degree elbows. A clean out point at every change of direction is
recommended.


Installation Continued
The stove can be recessed in a suitable sized fireplace but a permanent free air
gap of at least 100mm must be left around the sides and top to obtain maximum
heat output and for access to the rear of the stove. There should not be any
combustible material within a distance of 450mm from any surface of the stove.
Furniture and general soft furnishings should not be within 900mm of any stove
surfaces including the stove pipe. In all instances the stove In all instances the stove
should be positioned on a non-combustible hearth. Allow an apron of at least
300mm at the front of the stove and 150mm on either side. The hearth on which the
stove is to be placed should not be less than 125mm thick if the floor is made of
combustible material, and care should be taken to level the stove and secure the
hearth. If existing floors do not have adequate load bearing capacity then suitable
modifications i.e. load bearing plates must be adopted.
When the stove is desired position mark hearth through holes in feet, remove stove
drill and plug hearth for securing stove and levelling.
Upon completion of installation, the appliance should be checked under fire for
soundness of joints and seals, and also that all smoke and fumes are taken from the
appliance, up the chimney and emitted safely.
Care should be taken that all flues, hearths, and combustion air supplies are in
accordance with the current Building Regulations, Local Authority Bye-Laws, British
Standards and Codes of Practice. The Firefox 5 CB has no ventilation requirement
but a fixed vent is advisable as this will enhance the pull of the chimney and reduce
unwanted draughts. Care should be taken that these opening cannot become
obstructed. Considerations and provisions must be made for any other appliances
requiring ventilation. An extractor fan must not be used in the same location as the
appliance. This appliance is not to be used with a shared chimney.
Operating Instructions
The appliance uses the down burn principle unlike conventional stoves where the
flame path rises up to the baffle plate in the top of the stove, circulates around the
baffle then out through the flue outlet. The down burn stove has a throat at the
bottom rear of the fire box. Behind the back brick is a combustion chamber that
has its own air supply, the flame passes up into the fire box then down into the
throat, it then enters the combustion chamber where it is injected with pre-heated
air. This causes a rise in temperature burning off smoke particles, creating cleaner
emissions. After entering the combustion chamber the hot gasses circulate around
the inner baffle and out round the flue outlet.
The secondary and tertiary air supplies create the clean burn function; these air
supplies are not adjustable. The primary air supply controls the burn rate. There is a
fixed primary air bleed on the door located above the primary air slide.

Operating Instructions

The appliance has been extensively tested and meets all the requirements
necessary to burn wood in smoke controlled areas and is DEFRA approved. If the
appliance is installed, operated and regularly serviced correctly it will offer many
years of reliable service.
The primary air slide at the bottom of the door is the only variable control for the
fire. It is marked (+) meaning more air, and (-) meaning less air. When the slide is in
the maximum (+) direction, the stove will achieve its maximum heat output. When
the slide is in its minimum (-) direction, this stove is in a high efficiency tick-over
mode.
Note - When the stove is stove is in high output mode, more fuel will be consumed.
It is necessary to establish a good ash bed and generate heat to the combustion
chamber and flue (chimney), before significant restriction of primary air.
Chimney type, atmospheric conditions and fuel quality will affect the efficiency of
the stove so some practice will be required to get the stove running correctly in
your particular environment.
Warning - Do not load with excessive amounts of fuel, the clean burn efficiency
will be affected, and internal panels could be dislodged.
Lighting the stove
We recommend that you have two or three small fires before you operate your
stove to its maximum heat output. This is to allow the paint to cure and castings
to relax and consolidate location we recommend ‘running in’ procedure after
long shutdowns to preserve life of stove. During this you may notice an
unpleasant smell. It is not toxic, but for your comfort we would suggest that during
this period you leave all doors and windows open.
Although screwed up paper can be used to light the fire in the stove, we
recommend the use of firelighters. Place one firelighter at the back of grate in
front of the flue throat and ignite. Place kindling wood on closed grate in front of
the firelighter, then place one firelighter in front of kindling wood. Leave the stove
door ajar for 10 minutes as the fire establishes. Close stove door and open primary
air supply at bottom of door.
Note - Don’t forget to close stove door after approximately 10 minutes. When
kindling is well alight, place medium sized logs on grate and allow to ignite
gradually then build up to maximum size logs. When the fire bed is established
close down primary air slide to desired position.
This stove is designed to be operated with the door closed. Except for establishing
a fire and refuelling it is unsafe to operate with the door open.

Operating Instructions
Notes on Wood Burning - Wood burns best on a bed of ash and it is therefore only
necessary to remove surplus ash from the grate occasionally. Burn only dry, well
seasoned wood, which should have been cut, split and stacked for at least 12
months, with free air movement around the sides of the stack to enable it to dry
out. Burning wet or unseasoned wood will create tar deposits in the stove and
chimney and will produce unsatisfactory heat output.
Re-Fuelling
The stove will stay hot for sometime after the volatiles in the wood have been
consumed. When more fuel is added it will ignite quickly, and primary air settings
need not be adjusted. If the stove has cooled down too much but red embers
are still visible then the primary air will require opening fully to ignite the new fuel
added. Wood burns best on a bed of ash, so it is not necessary to remove the ash
completely. But removal of ash from the throat is advisable and can be just
dragged forwards. When re-fuelling, the air control should be fully opened for
approximately 1 minute or until ignition is well established, then close to the
desired setting.
De-ashing
De-ashing is only required when excessive amounts of ash have built up.
The grate has two positions, open or closed. The open position is for de-ashing
only. To de-ash open grate with control knob, scrape ash through grate opening
with tool provided.
IMPORTANT - MAKE SURE ANY ASH BLOCKING THE FLUE THROAT (BOTTOM REAR OF
THE FLUE BOX) IS REMOVED.
Recommended Fuels
Seasoned wood- moisture content less than 20%.
Should any difficulties arise over fuel quality or suitability consult your local supplier
or the solid fuel advisory service.
General Maintenance
Basic maintenance can be carried out by the appliance operator, i.e. removal of
baffle plate, bricks, grate, and glass replacement, must be done when the
appliance is cold. Any structural repairs, i.e. panel or stove pipe replacement
must be carried out by a suitably qualified engineer.
Cleaning
It will be necessary to clean fly-ash off baffle plate in the top of the stove at least
once a month. When in regular use and after long shut down periods. To gain
access to baffle lift top brick and slide it side and backwards, remove right hand
side brick. Now top brick can be manipulated out of the stove door. You can now
gain access to the baffle plate. This can be removed, cleaned off and replaced.
The top brick is manipulated back into position and side brick replaced. Make
sure top brick has located all round.

General Maintenance

Stove Body
The stove is finished with a heat-resistant paint and this can be cleaned with a soft
brush. Do not clean whilst the stove is hot; wait until it has cooled down. The finish
can be renovated with a suitable brand of paint.
Glass Panels
Clean the glass panel when cool with a proprietary glass cleaner. Highly abrasive
substances should be avoided as these can scratch the glass and make
subsequent cleaning more difficult. Wet logs on heated glass, a badly aimed
poker or heavy slamming of doors could crack the glass panels. The glass will not
fracture from heat.
Chimney
Check your chimney each year before starting to use your stove for the winter.
Birds may have nested in the chimney or the masonry may have cracked. Both
chimney and flue pipe must be swept at least once a year.
Grate Removal
To remove the centre grate, un-screw control knob from riddling rod, rotate grate
anti-clockwise until rod passes out of guide hole. Now, manipulate grate out of
stove door opening. Note the position of the hook on the end of the riddling rod
as it connects to the grate. If it becomes disconnected then re-connect by
passing the hook under and up through the grate arm.
Seasonal Maintenance
If the appliance is not used for any length of time e.g. summer months then it is
recommended that the appliance is cleaned out thoroughly. Air slides, hinge
pins and door catches should be lightly oiled. Regular monitoring of internals will
highlight condensation problems or water ingress. If these problems occur then
the appliance needs drying and the cause of the problem investigating. It is
advisable that after a seasonal shut down the appliance is re-cleaned. Remove
baffle plate, brick linings and operation of grate. Check flue for any possible
blockages. It is advisable to have the chimney swept at least once or twice a
year if the appliance is in constant use. The use of poor quality wood makes flues
soot or tar up more frequently.

Trouble Shooting
POOR HEAT OUTPUT
A) Stove too small for a room. Seek advise from a Qualified Heating Engineer as to
(KW) output required for room size as a guideline the volume of the room in cubic
feet divided by 500 i.e. room 15’x15’x8’ would require 3.6kw approx.
B) Chimney and/or flue pipe restricted, room ventilation restricted. On installation
these will have been checked but regular maintenance is necessary as
conditions can change i.e. soot build up, birds nesting, masonry fall, dust build up
or furniture blocking vents.
C) Poor quality fuel. Only burn dry seasoned timber, soft woods have a lower
heat output then hard woods per hour. Solid fuels vary in heat value check with
your coal merchant as to suitability.
DIRTY GLASS PANEL
A) Generally caused by poor fuel quality, see (1c)
B) Fire burning to low, open air vents on stove create hot fire this may ‘burn’ glass
clean.
C) If glass requires cleaning use glass cleaner recommended by your supplier,
only use glass cleaner or cold glass. DO NOT USE any abrasives or scrapers as
these will scratch glass causing tar build up harder to remove.
UNBURNT FUEL IN FIREBOX
Insufficient air reaching fuel. Open primary air slide, this will supply combustion
air to burn fuel fully (unless it has reached a ‘point of return’). Check ash pan is
full, empty if required, grate may be blocked de-ash with riddler. Check for
jammed clinker or nails in grate when fires out and cold.
SMOKE AND FUMES ENTERING ROOM
These are very dangerous and must NOT be tolerated. Open window and allow
fire to burn out, seek expert advice immediately. DO NOT USE stove until the
problem is solved.
CHIMNEY FIRE
Identified by loud roaring sounds, dense smoke and sparks emitting from chimney.
Shut down the air supply by closing the air vents, close the stove door fully and
call the fire brigade immediately. Regular chimney maintenance will prevent
chimney fires. Seek advice from a qualified chimney sweep

Installation Diagrams

Typical Top Flue Installation using steel closure plate incorporating clean out door
for chimney sweeping.


Installation Diagrams

Typical Installation For Inglenook Fireplaces
Inglenook fireplaces can have very large bore chimneys. Check with your installer
– you may need stainless steel flexible liner for solid fuel fitting.


Installation Diagrams
Typical Installation Into In Filled Masonry Fireplaces




Specifications
Dimensions may vary slightly. The manufacturer reserves the right to adjust them without notice.

Technical Information
Nominal Heat Output kW 4.9
Efficiency % 72
Flue Gas Temp ˚C 313
Refuel Period Hour
1
Sides mm 450
Safe Distance to Combustibles Rear mm 400
Flue Outlet Size mm 125
g/s 5.1
Flue Gas Mass Flow
% 0.36
CO emission at 13% O2
kg 75
Appliance Weight

PercyDoughty&Co
ImperialPoint,ExpressTradingEstate
StonehillRd,Farnworth,Bolton,BL49TN
