Charnwood Stove WOODBURNER User Manual

CHARNWOOD  
COUNTRY 8 & 12 WOODBURNER  
Operating  
and  
Installation Instructions  
Bishops Way, Newport, Isle Of Wight, PO3O 5WS, U.K.  
Tel: (01983) 527552 Fax: (01983) 821267  
 
open for long periods as this can cause  
over-firing. For overnight burning they  
should be closed.  
in contact with the underside of the grate  
as this will seriously damage the grate.  
Care should be taken to ensure that ash is  
cool before emptying it into plastic liners  
or bins. After emptying the ashpan, poke  
the fire with a poker to clear the firebed  
of ash.  
the fire is very low then open the air  
controls and revive the fire, adding a  
small amount of fuel if necessary. Empty  
the ashpan and poke the fire, load with  
fuel, and then close the door air slides.  
The airwash control should be kept  
slightly open to help keep the door glass  
clean.  
The airwash control is used most of the  
time to control the burning rate and to  
keep the glass clean. Fully extended gives  
full airwash for faster burning and clean  
glass whereas fully closed gives slow  
overnight burning. It will not be possible  
to keep the glass clean if this control is  
fully closed, particularly just after  
refuelling.  
To make ash removal easier, when  
burning coal or smokeless fuel, there is a  
special Charnwood ash carrier available.  
This enables the whole ashpan to be  
placed in the sealed carrier and taken  
outside. These may be purchased from  
your supplier or, in case of difficulty,  
from ourselves.  
Some experimentation may be necessary  
to find the setting most suitable for the  
type of fuel being used and the draw on  
the chimney.  
To revive the fire, empty the ashpan, (if  
burning coal or smokeless fuel), poke the  
fire, and open the air controls to  
maximum. When the fire is burning well  
load on more fuel as necessary and adjust  
the air controls to the desired setting.  
REFUELLING  
Keep the firebox well filled but do not  
allow fuel to spill over the top of the  
front fire bars.  
SPECIAL POINTS WHEN  
BURNING HOUSE COAL  
Care should be taken, especially when  
burning wood, that fuel does not project  
over the front fire bars or damage to the  
glass may be caused when the doors are  
closed, it can also cause the glass to black  
up.  
When loading the stove take care not to  
smother the fire, instead fill the firebox  
in two stages waiting between each stage  
for the flames to appear above the fire.  
CLEANING AND  
MAINTENANCE  
The stove is finished with a high  
After a period of slumbering always open  
the door air slides and wait until flames  
appear above the fuel bed before opening  
the doors.  
temperature paint which will withstand  
the temperatures encountered in normal  
use. This may be cleaned with a damp  
lint-free cloth when the stove is cold.  
Should re-painting become necessary,  
high temperature paints are available  
from your supplier or from stove shops.  
ASH CLEARANCE  
When burning wood or peat the ash  
should be allowed to build up on the base  
of the fire. It will only be necessary to  
remove some ash once or twice a week  
when it begins to restrict the flow of air  
through the front fence.  
Burning coal will produce more soot  
deposits than other fuels, especially if the  
fire is run at low levels for long periods.  
It is therefore vital to clean the throat  
plate regularly, weekly cleaning is  
recommended.  
Most deposits on the glass may be burnt  
off simply by running the fire at a fast  
rate for a few minutes. If it becomes  
necessary to clean the glass then open the  
doors and allow them to cool. Clean the  
glass using a damp cloth and then wiping  
over with a dry cloth. Any stubborn  
deposits on the glass may be removed  
with a proprietary stove glass cleaner or  
ceramic hob cleaner. Do not use abrasive  
cleaners or pads as theses can scratch the  
surface which will weaken the glass and  
cause premature failure.  
When burning coal or smokeless fuel the  
ashpan should be emptied regularly  
before it becomes too full, generally once  
or twice a day. Never allow the ash to  
accumulate in the ashpan so that it comes  
Never fully close the Airwash control  
when burning coal.  
RUNNING THE FIRE WITH  
THE DOORS OPEN  
The fire may be run with the doors open  
if required. The more reactive fuels, such  
as wood, peat, coal and homefire, will  
burn better with the doors open than fuels  
like phurnacite and ancit. Do not leave  
the fire unattended with the doors open.  
Throat Plate  
THROAT PLATE AND  
FLUEWAY CLEANING  
OVERNIGHT BURNING  
It is important that the throat plate and all  
the stove flueways are kept clean in order  
to prevent potentially dangerous fume  
emission. They should be cleaned at least  
monthly, and more frequently if  
necessary. It is not necessary to let the  
fire out completely to carry out these  
operations.  
For overnight burning the fire doors must  
be closed.  
Pull Forward  
and Swing Down  
When burning wood load some large logs  
on the fire and allow to burn for half an  
hour before closing the door air slides,  
(this will help to reduce tar deposits in  
the chimney.) Leave the airwash control  
slightly open to help keep the glass clear.  
Fig. 2. Throat Plate Position  
and Lowering.  
The front of the throat plate is pulled  
forward and then lowered as shown in  
Fig. 2. Any sooty deposits should then be  
When burning coal or smokeless fuel, if  
Page 3  
Country 8 &12 WB 6/97  
 
swept from the plate and into the fire.  
that the best settings of the air controls  
will vary for different installations. A  
certain amount of experimentation may  
be required, however the following points  
should be noted and with a little care  
should enable the glass to be kept clean  
in most situations:  
the room.  
b) Let the fire out and safely dispose of  
the fuel from the appliance.  
c) Check for flue or chimney blockage,  
and clean if required.  
d) Do not attempt to re-light the fire  
until cause of fume has been identified,  
if necessary seek professional advice.  
Return the throat plate to its correct  
position - raise the front of the plate,  
push it back and then lower it onto the  
retaining lugs.  
CHIMNEY SWEEPING  
a) The airwash relies on a supply of  
heated air to keep the glass clean,  
therefore, when lighting the stove allow  
the firebed to become well established  
before closing the airslides. This may  
also be necessary when re-fuelling the  
stove.  
The chimney should be swept at least  
twice a year. Where the top outlet or  
vertical rear flue connector is used it will  
generally be possible to sweep the  
chimney through the appliance.  
The most common cause of fume  
emission is flueway or chimney blockage.  
For your own safety these must be kept  
clean.  
Fire blazing out of control  
First remove the front fence and the  
throat plate. Then sweep the chimney  
ensuring that soot is removed from all  
horizontal surfaces after sweeping.  
b) When re-fuelling keep the fuel as far  
back from the front fence as possible, do  
not try to fit too much fuel into the  
firebox.  
Check that :  
a) The doors are tightly closed.  
b) The airslides are turned down to the  
minimum setting.  
c) The airwash control is closed.  
d) A suitable fuel is being used.  
e) Door seals and airwash slide are intact.  
In situations where it is not possible to  
sweep through the appliance the installer  
will have provided alternative means,  
such as a soot door. After sweeping the  
chimney the appliance flue outlet and the  
flue pipe connecting the stove to the  
chimney must be cleaned with a flue  
brush.  
c) Never completely close the airwash  
control - as a guide it should be at least a  
quarter open.  
d) The airslides in the doors may be kept  
slightly open to assist in keeping the  
glass clean.  
Chimney Fires.  
If the chimney is thoroughly and regularly  
swept, chimney fires should not occur.  
However, if a chimney fire does occur  
close the door air slides and the airwash  
control, and tightly close the doors of the  
appliance. This should cause the chimney  
fire to go out in which case the controls  
should be kept closed until the stove has  
gone out. The chimney and flueways  
should then be cleaned. If the chimney  
fire does not go out when the above  
action is taken then the fire brigade  
should be called immediately.  
e) Wet wood or logs overhanging the  
front fence will cause the glass to  
blacken.  
After clearing any soot from within the  
stove, replace the throat plate (see Fig.  
2.) and the front fence.  
It is always more difficult to keep the  
glass clean when running the stove very  
slowly for long periods.  
Different types of sweep’s brushes are  
available to suit different flueways. For  
standard brick chimneys a wire centre  
sweep’s brush fitted with a guide wheel  
is recommended. For prefabricated  
insulated chimneys the manufacturers  
instructions with regard to sweeping  
should be consulted.  
If blackening of the glass still occurs  
check that all flue connections and the  
blanking plate are well sealed. It is also  
important that the chimney draw is  
sufficient and that it is not affected by  
down-draught.. When the chimney is  
warm a draught reading of at least 2.5  
mm (0.10 inches) water gauge should be  
obtained.  
After a chimney fire the chimney should  
be carefully examined for any damage.  
Expert advice should be sought if  
necessary.  
TROUBLE SHOOTING  
Fire Will Not Burn.  
When burning coal some blackening of  
the glass may occur below the level of the  
front fence. This will not obscure the  
view of the fire or affect its performance.  
Check that:  
a) the air inlet is not obstructed in any  
way,  
b) chimneys and flueways are clear,  
c) that a suitable fuel is being used,  
d) that there is an adequate air supply  
into the room,  
e) that an extractor fan is not fitted in the  
same room as the stove.  
f) there is sufficient draw in the chimney.  
Once the chimney is warm a draught  
reading of at least 2.5 mm (0.10 inches)  
water gauge should be obtained.  
Fume Emission.  
Warning Note: Properly installed and  
operated this appliance will not emit  
fumes. Occasional fume from de-ashing  
and re-fuelling may occur. Persistent  
fume emission is potentially dangerous  
and must not be tolerated. If fume  
emission does persist, then the  
following immediate actions should be  
taken:  
Door Glass Blacks Up  
Differences in chimney draughts mean  
a) Open doors and windows to ventilate  
Page 4  
Country 8 &12 WB 6/97  
 
CHARNWOOD COUNTRY 8 & 12 WB  
INSTALLATION INSTRUCTIONS  
from the outlet of the stove to the top of  
the chimney. The internal dimensions of  
the chimney should preferably be 175 mm  
(7 inches) or 200mm (8 inches) either  
square or round and MUST NOT BE  
LESS THAN 150 mm (6 INCHES).  
regulations state that the hearth must  
HEALTH AND SAFETY  
PRECAUTIONS  
extend in front of the stove by at least  
300mm (12 inches) and to the sides of  
the stove by at least 150mm (6 inches). If  
in doubt as to the positioning of the stove  
expert advice should be sought either  
from the supplier or the local building  
inspector.  
Please take care when installing the stove  
that the requirements of the Health and  
Safety at Work Act 1974 are met.  
If an existing chimney is to be used it  
must be swept and checked, it must be in  
good condition, free from cracks and  
blockages, and should not have an  
excessive cross sectional area. If you find  
that the chimney is in poor condition then  
expert advice should be sought regarding  
the necessity of having the chimney lined.  
If it is found necessary to line the  
Some types of fire cement are caustic and  
should not be allowed to come into  
contact with the skin. In case of contact  
wash with plenty of water.  
The fireplace must allow good circulation  
of air around the appliance to ensure that  
maximum heat is transferred to the room  
and also to prevent the fireplace from  
overheating. A gap of 150mm (6 inches)  
each side and 300mm (12 inches) above  
the appliance should give sufficient air  
circulation. If a wooden mantelpiece or  
beam is used in the fireplace it should be  
a minimum of 460mm (18 inches), and  
preferably 600mm (24 inches) from the  
appliance. In some situations it may be  
necessary to shield the beam or  
If there is a possibility of disturbing any  
asbestos in the course of installation then  
please use appropriate protective  
equipment.  
chimney then a lining suitable for Solid  
Fuel must be used.  
There must not be an extractor fan fitted  
in the same room as the stove as this can  
cause the appliance to emit fumes into  
the room.  
If there is no existing chimney then a  
prefabricated block chimney or a twin  
walled insulated stainless steel flue to  
BS.4543 can be used either internally or  
externally. These chimneys must be fitted  
in accordance with the manufacturers  
instructions and Building Regulations.  
There must be an adequate air supply  
into the room in which the appliance is  
installed totalling at least 100 square cm.  
(16 square inches) to provide combustion  
air. This is particularly necessary if the  
room is double glazed.  
mantelpiece to protect it.  
HOT WATER SYSTEM  
The optional add-in boiler which may be  
fitted in the appliance has an output  
sufficient for domestic hot water heating.  
If the boiler is fitted then the room  
heating will be reduced.  
Single wall flue pipe is suitable for  
connecting the stove to the chimney but is  
not suitable for using for the complete  
chimney.  
In addition to these instructions the  
requirements of BS.8303 and BS.6461 Pt  
1&2; 1984 must be fulfilled. Local  
Authority Bylaws and Building  
Regulations regarding the installation of  
Solid Fuel burning appliances, flues and  
chimneys must also be observed.  
If it is found that there is excessive draw  
in the chimney then a draught stabilizer  
should be fitted.  
The hot water system should be a gravity  
circuit and must be correctly vented as  
shown in Fig. 3.  
It is important that there is sufficient  
draw in the chimney and that the chimney  
does not suffer from down-draught. When  
the chimney is warm the draw should be  
not less than 2.5mm (0.10 inches) water  
gauge. If in doubt about the chimney seek  
expert advice.  
A double feed indirect hot water storage  
cylinder to BS:1566 part 1 should be used  
in most situations, unless the appliance is  
to be fitted in a soft water area in which  
case a direct hot water cylinder may be  
used provided that the boiler is glass  
lined.  
PERFORMANCE  
The output of the Country 8 WB is 8.0  
kW (27,300 Btu/h). The output of the  
Country 12 WB is 12.0 kW (40,900  
Btu/hr). The optional add-in boiler has an  
output of 2.9 kW (10,000 Btu/h), if the  
boiler is fitted then the heat output to the  
room will be reduced by this amount.  
HEARTH AND FIRE  
SURROUND  
All pipework in the primary circuit must  
be 28mm diameter and the flow pipe  
must rise continuously from the boiler to  
the open vent.  
These outputs are based on a 2 hourly  
re-fuelling cycle burning seasoned  
hardwood logs, or a 4 hourly re-fuelling  
cycle burning coal or smokeless fuel.  
The stove must stand on a fireproof  
hearth and must be situated at least  
300mm (12 inches) from any combustible  
material. There must be a gap behind the  
stove of at least 25mm to allow air to  
enter the airwash inlets. The positioning  
of the stove and the size of the hearth are  
governed by building regulations for  
Class 1 appliances. These building  
If an indirect cylinder is used then the  
primary circuit should be filled with a  
suitable inhibitor to prevent the build up  
of scale and corrosion.  
CHIMNEY  
In order for the appliance to perform  
satisfactorily the chimney height must not  
be less than 4 metres measured vertically  
Page 5  
Country 8 &12 WB 6/97  
 
Soot Door  
In Side or Rear  
Of Chimney  
22mm Open Vents  
Feed and Expansion Tank  
Overflow  
Cold Water Tank  
Overflow  
Register Plate  
Domestic Hot Water Draw Off  
Fig. 4. Vertical Register Plate  
With Bricked Up Fireplace  
Drain Cock  
Indirect Hot Water Cylinder  
Alternative  
Soot Door  
Positions  
Register Plate  
With Soot Door  
Drain Cock at Lowest Point  
Fig. 3. Typical Gravity Hot Water System  
Fig. 5. Horizontal Register Plate  
With Rear Flue Connection  
Alternative  
Soot Door  
Positions  
FITTING THE OPTIONAL  
CONNECTIONS TO FLUES  
ADD-IN BOILER  
There are several ways of connecting the  
stove to the flue. These are illustrated in  
Figs. 4 to 7.  
The boiler replaces the rear firebrick.  
Before fitting the boiler, remove the front  
fence, the throat plate and the rear  
firebrick. Knock out the knock-outs for  
the boiler tappings in the back of the  
firebox.  
Register P  
If the optional vertical rear flue connector  
is used then the chimney may be swept  
through the appliance.  
With Soot  
Horizontal lengths of flue must be kept to  
a minimum and should not be more than  
150mm (6 inches) long. The sealing face  
of the flue collar must be coated with fire  
cement before fixing to the body of the  
stove using the two screws provided. The  
blanking plate must be removed, sealed  
with fire cement and refitted, care being  
taken to ensure that the fold on the  
clamping plate is in line with the lugs on  
the firebox as shown in Fig. 8. Ensure  
that the clamping plate does not prevent  
the throat plate from seating correctly. All  
flue connections must be well sealed.  
Remove the back nuts and washers  
supplied with the boiler and fit the boiler  
into the appliance. Place the fibre  
washers over the tappings on the outside  
of the appliance and fit the two backnuts,  
ensuring that the boiler is held tightly  
against the rear inside face of the  
appliance and that the top edge of the  
boiler is level or runs uphill to the flow  
tapping.  
Fig. 6. Horizontal Register Plate  
With Top Flue Connection  
Alternative  
Soot Door  
Positions  
Register Plate  
With Soot Door  
Gaps between the boiler and the  
firebricks should be filled with fire  
cement.  
SOOT DOORS  
Connect the boiler to the heating system  
ensuring that the flow pipe rises  
continuously from the boilerto the open  
vent. Fill the system with water and  
check for leaks.  
It is possible to pass a 16 inch diameter  
sweeps brush through the appliance but  
in most back outlet installations it will be  
necessary to have a soot door to enable  
the chimney to be swept. The optional  
vertical rear flue connector does allow the  
Fig. 7. Horizontal Register Plate  
With Optional Vertical Rear Flue  
Connector  
Page 6  
Country 8 &12 WB 6/97  
 
chimney to be swept through the stove.  
of the stove, light a small fire and check  
to ensure that smoke and fumes are taken  
from the appliance up the chimney and  
emitted safely. Also check all joints and  
seals.  
Back of the Stove  
Blanking Plate  
Soot doors may either be in the actual  
brickwork of the chimney or in the  
register plate. Various positions of soot  
doors are shown in Figs. 4 to 7.  
On completion of the installation and  
commissioning please leave the operating  
instructions with the customer and advise  
them on the use of the appliance.  
PRE LIGHTING CHECK  
Clamping Plate  
with fold horizontal  
Blanking Plate  
Ensure that the throat plate is fitted in the  
roof of the appliance. The location and  
positioning of the throat plate is shown in  
Fig. 2.  
Clamping plate finishes  
flush with inside face of  
firebox top and bottom.  
Before initial lighting check that the front  
fence is fitted correctly and that the doors  
tighten properly.  
COMMISSIONING  
Seal Blanking Plate  
with fire cement  
On completion of the installation and  
after allowing a suitable period of time  
for the fire cement and mortar to dry out,  
make a layer of ash or sand on the base  
Fig. 8. Flue Blanking Plate.  
Page 7  
Country 8 &12 WB 6/97  
 

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