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Secondary Air 

Secondary air is controlled via the sliding vent above the door, it is this ‘airwash’ that 

keeps a clean and uninterrupted view of the fire, also aiding in good secondary combustion of 
fuel and reducing emissions into the chimney and environment. To adjust the secondary air 
intake, simply move the slider left (-) for less air or right (+) for more air. 
 
The stove has a pre-determined amount of fixed air supply on the primary and secondary air 
sliders.  This is factory set and should not be adjusted or altered as it  
facilitates the clean burn function. 
 
Because of the pre-set air supply it is important that the flue draught requirements are adhered 
to, i.e. minimum = 12 pascals, maximum = 15 pascals.  If the flue draught exceeds the  
maximum requirements then over firing can occur and suitable measures to control draught 
must be adopted. 
 
Note: Over firing due to fixed air supply will not be dangerously high but efficiency may be 
compromised. 
 
 
Damper Assembly (optional) 
When burning wood only, a flue damper assembly may be fitted. When the damper is set in 
the open position the chimney draws at full draught, increasing the volume of air flow through 
the stove and flue. Shutting the damper restricts the flow, slowing the rate of burning. This is 
an after market product and will be of the type with positive open and closed indication to  
prevent misunderstanding. 
 

THE FLUE DAMPER SHOULD NOT BE FITTED WHEN BURNING SOLID FUELS 

 

De-Ashing 
It is important that the riddler is used to remove the ash to ensure an airflow through the 
firebed and allow the fire to burn over the entire area of the grate. Insert peg on operating tool 
into hole in riddling rod, draw tool forwards and backwards with a slow positive action. Set rod 
in back position after de-ashing.  
 
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 not 
produce a satisfactory heat output. 
 
The clean burn function will be compromised if: the maximum fuel load is exceeded; the fuel is 
not dry/seasoned correctly; the fuel is contaminated i.e. paint, tar resins; or if the flue draught 
is insufficient. 
 
 
Notes On Solid Fuel Burning 
Always de-ash before refuelling and do not let the ash build up to the underside of the grate 
bars. Solid fuel produces ash, which if allowed to build up will stifle the air flow through the 
grate and eventually cause the fire to die. 

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5) Chimney Fire 
 

Identified by loud roaring sounds, dense smoke and sparks exiting chimney. 
Shut down air supply to stove by closing air vents, close stove door fully, call 
fire brigade immediately. Regular chimney maintenance will prevent chimney 

fires. Seek advice from a Qualified Chimney Sweep. Chimneys must be checked  
annually more often when bituminous coal and poor quality smoky fuels are used. 
 
If this appliance is well maintained and used correctly in accordance with these  
instructions it will give many years of efficient service and prove to be an excellent  
investment. 

Summary of Contents for FIREFOX 5 CLEAN BURN II

Page 1: ...ercydoughty com web www percydoughty co uk Essential characteristic Test fuel Beech Anthracite Fire Safety Pass Pass Emission of combustion products related to 13 O2 CO 0 11 vol Dust 73 mg m0 3 NOx 98...

Page 2: ...Dimensions may vary slightly the manufacturers reserve the right to adjust them without notice 15 Key To Dimensions A Height B Width C Centreline of Flue D Height To Centre of Rear Flue E Depth F Rea...

Page 3: ...1 FFX012 Side Brick 12 FFX013 Back Brick 13 FFX010 Leg 14 15 FFX004 Stove Door Front Panel 16 FFX014 Ash Pan 17 FFX011 Fret 18 FFC024 Secondary Air Duct 19 FFX018 Door Glass 20 FFX027 Glass Panel Seal...

Page 4: ...nts 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...

Page 5: ...ombustible 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...

Page 6: ...he firebed and allow the fire to burn over the entire area of the grate Insert peg on operating tool into hole in riddling rod draw tool forwards and backwards with a slow positive action Set rod in b...

Page 7: ...uel Anthracite large nuts briquette smokeless fuel i e Ancit Phurnacite Taybrite Homefire Ovals suitable for closed appliances Please note that when refuelling with solid fuel do not pile fuel higher...

Page 8: ...el collar replacement or stove pipe must be carried out by a suitably qualified engineer 9 General Maintenance Baffle Plate This should be removed at least once a month to prevent any build up of soot...

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