Charnwood Gas Heater SLX20 User Manual

CHARNWOOD  
SLX20 Multi-Fuel  
Roomheater  
Operating  
and  
Installation Instructions  
Bishops Way, Newport, Isle of Wight, PO30 5WS, U.K.  
Tel: +44(0)1983 537799 Fax: +44(0)1983 537788  
 
OPERATING INSTRUCTIONS FOR THE  
CHARNWOOD SLX20  
GENERAL POINTS  
PETROLEUM COKE IS NOT SUITABLE FOR USE ON  
Before lighting the fire check with the installer that the work  
and checks described in the installation instructions have  
been carried out correctly and that the chimney has been  
swept, is sound, and free of any obstructions.  
WARNING There must not be an extractor fan fitted in the  
same room as this appliance as this can cause the appliance  
to emit smoke and fumes into the room.  
If the appliance is fitted in place of an open fire then the  
chimney should be swept one month after the installation to  
clear any soot falls which may have occurred due to the  
difference in combustion between the appliance and the  
open fire.  
THIS APPLIANCE, ITS USE WILL INVALIDATE THE  
GUARANTEE  
At first you may find it helpful to try several fuels to find the  
most suitable. If you are unable to obtain the fuel you want,  
ask your supplier or an approved fuel distributor to suggest  
an alternative, or ring the Solid Fuel Association Helpline on  
Freephone 0800 600 000.  
When using the fire in situations where children or infirm  
people are present please use a fire guard to prevent  
accidents. The fire guard should be manufactured in  
accordance with BS 6539.  
FUELS  
The following smokeless fuels are suitable for use on this  
appliance:  
Ancit (Phurnacite Plus),  
Anthracite Large Nuts,  
Centurion,  
Cosycoke,  
Extracite,  
Maxibrite,  
Phurnacite,  
Welsh Dry Steam Coal (large Nuts)  
Turn handle  
clockwise to open  
Thermostat Control Knob  
The above fuels are all suitable for use in smoke control  
areas. In other areas the following fuels may also be burnt:  
Thermostat flap (behind side panel)  
COAL  
Housecoal Doubles, Trebles or cobbles may all be burnt. Do  
not use singles, small nuts, or coal dust. It is important that  
the large size coal is used (i.e. Larger than 2” or 50mm in  
size).  
Airwash Control  
pull to open  
The coal should be dry.When burning bituminous coal a  
little extra care is needed. Please Take note of the section  
“Special Points For Burning Coal”  
Wood  
Only Dry well seasoned wood should be burnt on this  
appliance as burning wet unseasoned wood will give rise to  
heavy tar deposits. For the same reason hard wood is better  
than soft wood. Burning wet unseasoned wood will also  
result in considerably reduced outputs. The wood should be  
cut and split and then left to season in a well ventilated dry  
place for at least one year preferably two years Before use.  
PEAT  
Ensure that the peat is well dried before use. Burning wet  
peat will give rise to heavy tar deposits and reduce outputs.  
Fig. 1. Controls  
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SLX20 9.03  
 
DOOR OPERATION  
The doors are opened by raising the door handle as shown  
in Fig. 1.Whenthefireisalight,avoidtouchingthedoors  
other than on the knobs as the metal will become hot.  
When closing the doors do not use excessive force.  
MULTIFUEL GRATE  
Your Charnwood is fitted with a multifuel grate which  
enables solid fuel, wood and peat to be burned equally  
effectively.  
The grate has two positions. One for solid fuel, the other  
for wood and peat.When in the solid fuel position ash can  
fall through the grate and into the ashpan.When in the  
wood position ash is able to build up on the grate as is  
necessary for effective wood or peat burning. Movement of  
the grate from one position to the other is effected using  
the tool supplied. The grate is put into the wood position by  
moving the tool up until the tool is vertical. The grate is put  
into the solid fuel position by moving the tool down until the  
tool is horizontal.  
Tool to be  
Vertical  
For Wood  
Or Peat  
Do Not Go Beyond  
45° Position  
When Riddling  
Riddle Between  
Horizontal &  
45° Positions  
Tool To Be  
Horizontal  
For Solid Fuel  
If a mixture of wood and solid fuel, or peat and solid fuel, is  
to be burnt then keep the grate in the solid fuel position.  
LIGHTING  
Place some paper and dry kindling wood or fire lighters on  
the grate and cover with a small amount of fuel. Turn the  
thermostat control knob to maximum setting and light the  
paper or fire lighters. Close the doors and allow the fire to  
burn until the fuel is well ignited then load with more fuel  
and adjust the thermostat to the required level.  
Fig. 2. Grate Operation  
RUNNING THE FIREWITHTHE  
DOORS OPEN  
On initial lighting, the fire may smoke and give off an odour  
as the silicon paint with which the firebox is painted reacts  
to the heat. This is normal and will cease after a short time.  
In the meantime the room should be well ventilated.  
The fire may be run with the doors open if desired although  
this will result in a reduction in efficiency and hence output.  
The more reactive fuels, like homefire, will burn better  
when the doors are left open than fuels like phurnacite and  
ancit.  
Before relighting the fire, riddle, remove any clinker from  
the firebed and empty the ashpan.  
For safety reasons, if the fire is to be left unattended with  
the doors left open then use a spark guard which complies  
to BS 3248.  
CONTROLLING THE FIRE  
The rate of burning and hence the output is controlled by  
the control knob on the left hand side of the appliance and  
the airwash control on the right, shown in fig. 1. Use the  
control knob on the left to control the heat output from the  
fire and keep the airwash control slightly open most of the  
time to keep the glass clean. It will not be possible to keep  
the glass clean if the ashwash control is fully closed,  
particularly after refuelling. The number at the top of the  
control knob is the number at which it is set, the higher the  
number the faster the burning rate.  
ASH CLEARANCE  
The ashpan should be emptied regularly before it comes too  
full. The most convenient time to remove the ash is just  
before riddling the fire since the ash will be at it’s coolest.  
Use the ashpan/riddling tool provided to remove the  
ashpan, the fold up carrying handle should be held with a  
heat proof glove.  
Never allow the ash to accumulate in the ashpan so that it  
comes in contact with the underside of the grate as this will  
seriously damage the grate bars. Ensure that the air inlet  
damper is not prevented from closing by spillage fuel or ash.  
Care should be taken to ensure that the ash is cool before  
emptying it into plastic liners or bins.  
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SLX20 9.03  
 
THROAT PLATE AND FLUEWAY  
CLEANING  
To make ash removal easier there is a special Charnwood  
ash carrier available. This may be purchased from you  
supplier or, in case of difficulty, from ourselves.  
It is important that the throat plate and all the appliance  
flueways are kept clean. When burning smokeless fuels they  
should be cleaned at least monthly. When burning other  
fuels they should be cleaned once a week, and more  
frequently if found necessary.  
RIDDLING  
Riddling twice a day is usually sufficient.  
The fire should be riddled with the doors shut. Place the  
tool on the knob and rotate between the horizontal and the  
45° position several times as shown in Fig. 2.  
The throat plate and flue ways may be cleaned with a low  
fire still burning. Use the scraper tool to scrape any sooty  
deposits off the front of the plate until they drop into the  
fire.  
Caution: when riddling the grate using solid fuel do not go  
beyond the 45° position as this can cause the grate to jam.  
More soot will be deposited on the throat plate and in the  
flueways if the appliance is run at low levels for long periods.  
If this is the case then more frequent cleaning will be  
necessary.  
If jamming does occur then the fire should be allowed to  
burn for approximately half an hour before riddling the  
grate again as described above.  
Too much riddling can result in emptying unburnt fuel into  
the ashpan and should therefore be avoided Clinker should  
regularly be removed from the firebed.  
SPECIAL POINTSWHENBURNING  
COAL  
After riddling, the grate should be put back into the solid  
fuel or wood position as required (the tool should be  
horizontal for solid fuel or vertical for wood).  
When burning housecoal keep the airwash control at least  
sightly open all the time (refer to Fig. 1.)  
When loading the appliance take care not to smother the  
fire, instead fill the firebox in two stages waiting for the  
flames to appear above the fire.  
REFUELLING  
Keep the firebox well filled (the fuel may be sloped up from  
the front fire bars), but not to allow the fuel to spill over the  
top of the front fire bars. Take care, especially when  
burning wood, that the fuel does not project over the front  
fire bars or damage to the glass may be caused when the  
doors are closed.  
After a period of slumbering always turn the air control up  
to maximum and wait until flames appear above the fuel  
bed before opening the doors.  
Burning coal will produce more soot deposits than other  
fuels, especially if the fire is run at low levels for a long  
periods. It is therefore vital to clean the throat plate  
regularly, weekly cleaning is recommended.  
OVERNIGHT BURNING  
Empty the ashpan, if necessary, and then riddle the fire if  
you are burning solid fuel. If the fire is very low then it may  
be necessary to add a little fuel and turn the thermostat  
control up to maximum for a brief period until the fire is  
burning brightly before filling with fuel. When burning  
wood use large logs overnight as they will burn more slowly  
than small ones.  
CLEANING AND MAINTENANCE  
Cleaning  
The appliance is finished in vitreous enamel. To clean the  
surfaces simply wipe over with a dry cloth. Abrasive pads  
and scouring cleaners must not be used as these will  
damage the finish. Care should be taken not to knock the  
enamel with hard objects as it will chip.  
Some experimentation may be necessary to find the setting  
most suitable for the particular fuel used and the draw on  
the chimney, but generally the thermostat should be turned  
down to the minimum setting.  
Cleaning the Glass  
The glass in the doors is a special ceramic glass which is able  
to withstand high temperatures. Before cleaning the glass  
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.  
Some deposits on the glass may be burnt off simply by  
running the fire at a fast rate for a few minutes. Do not use  
abrasive cleaners or pads as these can scratch the surface  
which will weaken the glass and cause premature failure.  
Aerosol spray cleaners should not be used near the  
appliance whilst it is under fire.  
For overnight burning the fire doors must be closed.  
To revive the fire, empty the ashpan if necessary, riddle  
(when burning solid fuel) and turn the thermostat control  
to maximum. When the fire is burning well load more fuel  
as necessary and turn the control knob to the desired  
setting.  
When burning wood do not riddle but simply set the air  
controls to maximum until the fire picks up and then set  
them at the required setting and refuel as necessary.  
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SLX20 9.03  
 
When not in use  
b) the thermostat knob is turned down to the minimum  
setting and the airwash is closed,  
c) the air inlet damper is closed (at the bottom left of the  
appliance, see Fig. 1.) and that it is not prevented from  
closing completely by a piece of ash,  
d) a suitable fuel is being used,  
e) the door seals are in good condition.  
If the fire is going to be out of use for a long period, (for  
instance in the summer,) then to prevent condensation, and  
hence corrosion, the thermostat should be left at the  
maximum setting and the main doors left ajar. It is also  
advisable to sweep the chimney and clean out the fire.  
Spraying the inside of the doors and firebox with a light oil,  
such as WD40, will also help to keep all internal parts  
working well.  
Over-Firing  
If the fire is over- firing it will cause premature failure of the  
internal fire parts. Overfiring is occurring when any internal  
parts of the fire begin to glow red. To prevent over-firing  
ensure that:  
Door Seals  
For the fire to operate correctly it is important that the  
door seals are in good condition. Check that they do not  
become worn or frayed and replace them when necessary.  
Servicing  
It is recommended that the fire is serviced once a year to  
keep it in first class working order. After cleaning out the  
firebox thoroughly, check that all internal parts are in good  
working order, replacing any parts that are beginning to  
show signs of wear. Check that the door seals are in good  
condition and that the doors seal correctly. Check the  
operation of the thermostat, both when cold and hot. A  
servicing guide, TIS 48. is available on request.  
a) the door seals are kept in good condition, and that the  
doors are sealing correctly,  
b) the thermostat on the fire is working correctly,  
c) a suitable fuel is being used.  
Fume Emission  
Warning Note: Properly installed and operated this  
appliance will not emit fumes. Occasional fume from de-  
ashing and re-fueling may occur. Persistent fume emission  
is potentially dangerous and must not be tolerated. If  
fume emission does persist then take the following  
immediate actions should be taken:  
CHIMNEY SWEEPING  
a) Open the doors and windows to ventilate the room.  
b) Let the fire out and safely dispose of fuel from the  
appliance.  
c) Check for flue or chimney blockage, and clean if  
required.  
d) Do not attempt to relight fire until cause of fume has  
been identified, if necessary seek professional advise.  
The chimney should be swept at least twice a year. In most  
installations it will be possible to sweep the chimney through  
the appliance.  
First remove the front firebars and the throat plate. Then  
sweep the chimney ensuring that soot is removed from all  
horizontal surfaces after sweeping.  
The most common cause of fume emission is flueway or  
chimney blockage. For you own safety these must be kept  
clean.  
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  
appliance must be cleaned with a flue brush.  
Freezing  
If a boiler is fitted do not light the fire if there is any  
possibility that any parts of the system may be frozen.  
After cleaning any soot from within the fire, replace the  
throat plate and the front firebars.  
Chimney fires  
If the chimney is thoroughly and regularly swept, chimney  
fires should not occur. However, if a chimney fire does  
occur then turn the control knob to the minimum setting  
(see Fig. 1), and tightly close the doors of the appliance.  
This should cause the chimney fire to go out in which case  
the control should be kept at the minimum setting until the  
fire in the appliance 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.  
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.  
TROUBLE SHOOTING  
Fire Will Not Burn.  
After a chimney fire the chimney should be carefully  
examined for any damage. Expert advise should be sought if  
necessary.  
Check that:  
a) the air inlet is not obstructed in any way,  
b) chimneys and flueways are clear,  
c) a suitable fuel is being used,  
d) there is an adequate air supply into the room,  
e) an extractor fan is not fitted in the same room as the fire.  
Door Glass Backs Up  
Differences in chimney draughts mean that the best setting  
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:  
Fire Blazing Out Of Control.  
Check that:  
a) the doors are tightly closed,  
a) The airwash relies on a supply of heated air to keep the  
Page 6  
SLX20 9.03  
 
glass clean, therefore, when lighting the stove allow the  
firebed to become well established before turning the  
thermostat down. It may sometimes be beneficial to also  
keep the doors slightly ajar whilst the fire becomes  
established. This can also apply when re-fuelling.  
b) When re-fuelling keep the fuel back a little from the front  
firebars, do not try to fit too much fuel into the firebox.  
c) Never completely clse the airwash control - as a guide it  
should be at least a quarter open.  
It is always more difficult to keep the glass clean when  
running the stove very slowly for long periods.  
If blackening of the glass still occurs check that all flue  
connections are well sealed. It is also important that the  
chimney draw is sufficient and that it is not affected by  
down-draught.Whenthechimneyis warm a draught  
reading of at least 2.5mm (0.10 inches) water gauge should  
be obtained.  
d) Wet wood or logs overhanging the front firebars will  
cause the glass to blacken.  
Page 7  
SLX20 9.03  
 
INSTALLATION INSTRUCTIONS FOR THE  
CHARNWOOD SLX20  
checked, it must be in good condition, free from cracks and  
HEALTH AND SAFETY  
PRECAUTIONS  
blockages, and should not have a excessive cross sectional  
area (e.g. Greater than 250mm x 250mm). 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 found necessary to line the chimney then a lining  
suitable for Solid Fuel must be used.  
WARNING please take care when installing the appliance  
that the requirements of the Health and Safety at Work Act  
are met.  
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.  
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  
If there is a possibility of disturbing any asbestos in the  
course of installation then please use appropriate  
equipment.  
manufacturers instructions and Building Regulations.  
Single wall flue pipe is suitable for connecting the appliance  
to the chimney but is not suitable for using for the complete  
chimney.  
There must not be an extractor fan in the same room as the  
appliance as this can cause the appliance to emit fumes into  
the room.  
If it is found there is excessive draw in the chimney then a  
draught stabiliser should be fitted.  
There must be an adequate air supply to 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.  
HEARTH AND FIRE  
SURROUND  
In addition to these instructions the requirements of  
BS:8303 and BS:6461 Pt 1&2; 1984 must be fulfilled. Local  
Authority Bye-laws and Building Regulations regarding the  
installation of Solid Fuel burning appliances, flues and  
chimney must be observed.  
The appliance must be installed on a fireproof hearth and  
must be situated at least 300mm (12 inches) from any  
combustible material. The positioning of the appliance and  
the size of the hearth are governed by building regulations  
for Class 1 appliances. These building regulations state that  
the hearth must extend in front of the appliance by at least  
300mm (12 inches) and to the sides by at least 150mm (6  
inches). If in doubt as to the positioning of the appliance  
expert advise should be sought either from the supplier or  
the local building inspector.  
PERFORMANCE  
The rated output for the SLX20 is 5.4 kW (18500btu/h) to  
the room.  
The fireplace must allow good circulation of air around the  
appliance, especially above it, to ensure that maximum heat  
is transferred to the room and also to prevent the fireplace  
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, beam or  
surround is used in the fireplace it should be a minimum of  
460mm (18 inches), and preferably 600mm (24 inches)  
above the appliance. In some situations it may be necessary  
to shield the beam or mantelpiece to protect it.  
This is the output obtained burning smokeless fuel with the  
doors closed over a 4 hourly re-fueling interval.  
There is an optional add-in domestic hot water boiler  
available with an output of 2.0 kW (6800 btu/h). If this is  
fitted then the output to the room will be reduced by a  
corresponding amount.  
CHIMNEY  
In order for the appliance to perform satisfactorily the  
chimney height must not be less than 4 metres measured  
from the outlet of the fire to the top of the chimney. The  
chimney should preferably be 175mm (7 inches) or 200mm  
(8 inches) internal diameter or square with sides of 175mm  
or 200mm internally and MUST NOT BE LESS THAN  
150mm (6 INCHES) INTERNAL DIAMETER OR 150 x  
150MM INTERNAL SQUARE.  
PREPARATION OF THE FIREPLACE  
Before fitting the appliance into an existing fireplace remove  
the fire back and any loose in-fill material.  
The surround and opening for the appliance must conform  
with Figs. 3. The flat area around the opening must be a  
minimum of 750mm wide and 660mm high. Ensure that the  
hearth and the base in the opening are flat, level, and at  
If an existing chimney is to be used it must be swept and  
Page 8  
SLX20 9.03  
 
the open vent.  
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.  
The shaded area on the face of  
the surround is the minimum flat  
area required.  
750 mm  
FITTING THE  
OPTIONAL ADD-IN  
BOILER  
B
660 mm  
A
The boiler replaces the rear firebrick and is reversible so  
that the 1” B.S.P. male tappings may come on either the left  
or the right hand side of the boiler.  
Dim. A:  
Max. 470mm (18 1/2")  
Min. 405mm (16")  
Dim. B:  
Max. 575mm (22 2/3")  
Min. 555mm (21 3/4")  
The boiler tappings protrude from the sides of the appliance  
and it will therefore be necessary to fit the boiler into the  
appliance after positioning the appliance in the fireplace if  
the fire surround is already fitted.  
Fig. 3. Limiting Dimensions Of  
Surround And Opening  
Before fitting the boiler, remove the front firebars, the side  
and back fire plates and the firebricks. Knock out the knock-  
outs for the boiler tappings on the appropriate side of the  
firebox.  
right angles to the surround.  
Make a hole in the font of the chimney breast to give access  
for infilling and fixing the flue pipe. If the optional boiler is  
to be fitted it will also be necessary to make a hole in the  
side of the chimney breast to give access for the pipework.  
Remove the backnuts and fibre washers from the boiler  
tappings and fit the boiler into the appliance. Place the fibre  
washers over the tappings on the outside of the appliance  
and fit the 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.  
FITTING THE FIRE  
In some cases it may be necessary to place the connecting  
flue pipe in the chimney before fitting the fire into the  
fireplace.  
When re-fitting the firebricks, note that the short side  
firebrick supplied with the boiler must be fitted on the same  
side as the boiler tappings. One of the original sidebricks is  
fitted on the other side, and the rear brick is discarded. The  
firebricks are held in position by the retaining brackets.  
Apply fire cement to the rear face of the sealing flange on  
the appliance. Fit the appliance into the opening ensuring  
that it is central and that a good seal is made between the  
sealing flange and the face of the surround.  
Remove any excess fire cement from around the sealing  
flange.  
The appliance should be screwed to the hearth through the  
22mm Open Vents  
Feed and Expansion Tank  
Cold Water Tank  
holes at the base of the sealing flange.  
Overflow  
Overflow  
HOT WATER SYSTEM  
Domestic Hot Water Draw Off  
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.  
Drain Cock  
Indirect Hot Water Cylinder  
The hot water system should be a gravity circuit and must  
be correctly vented as shown in Fig. 4.  
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 stainless steel.  
Drain Cock at Lowest Point  
All pipework in the primary circuit must be 28mm diameter  
and the flow pipe must rise continuously from the boiler to  
Fig. 4. Typical Gravity Hot Water System  
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SLX20 9.03  
 
Replace the back fireplate, the side fireplates, the front  
firebar and the throat plate.  
Flaunching  
Connect the boiler to the heating system ensuring that the  
flow pipe rises from the boiler. Fill the system with water  
and check for leaks.  
Take Flue Pipe  
Up To Narrowest  
Part Of Chimney.  
FLUE CONNECTION  
AND INFILLING  
150° Elbow  
Part No. 010/AV12  
Make the flue connection with the special 150° elbow, Part  
No. 010/AV12. Please note that this item is ordered  
separately from the appliance. The legs of the elbow may be  
cut on site to suit the chimney. Also note that the legs of the  
elbow are different lengths to enable some situations to be  
catered for by turning the elbow around.  
Vermiculite  
Infill  
150°  
The end of the flue pipe must line up with the centre-line of  
the chimney, and must also extend to the point where the  
chimney narrows to its final size. Any large voids must be  
filled and flaunched to the flue pipe to ensure that all soot  
deposits can be cleared when the appliance is swept, and to  
prevent problems with the operation of the appliance.  
Ensure that the flue pipe is not obstructed or restricted in  
any way and that all joints are well sealed.  
Before infilling cover the front of the appliance to protect it.  
Ensure that the flue pipe is central and then fill the space  
between the body of the appliance and the structural  
brickwork with vermiculite (e.g. Micafil or similar) concrete.  
Ensure that there are no air pockets. The recommended  
mix is six volumes of vermiculite to one volume of portland  
cement throughly mixed together. Enough water should be  
added so that no more than one or two drops of water are  
released when a handful ofmixture is squeezed.  
Fig. 5. Typical Installation  
After filling with vermiculite flaunch the top of the flue  
connector pipe to the chimney with lime mortar. Ensure  
that the flue pipe is well sealed to the chimney.  
Flap Just Closed With  
Knob Set To Minimum  
Make good hole(s) in the chimney breast making sure that it  
is completely airtight. A typical installation is shown in fig. 5.  
In most installations it will be possible to sweep the chimney  
through the appliance. If this is not possible then some  
alternative means (such as a soot door) must be provided.  
The free inset method of installation may be used instead of  
infilling. Details are available on request.  
THERMOSTAT  
Before lighting the fire check the cold setting distance of the  
thermostat.  
Locking Nut  
Thermostat Flap  
With the control knob at the minimum setting the flap  
should be just closed as shown in Fig. 6. To adjust the  
distance slacken the locking nut and adjust as necessary.  
When set correctly re-tighten the locking nut. Ensure that  
the flap opens and closes freely as the knob is turned.  
Fig. 6. Thermostat Setting  
Page 10  
SLX20 9.03  
 
ASSEMBLY  
Fit the side panels and the hood onto the appliance.  
Instructions for this are enclosed with the panel pack.  
Replace any internal parts previously removed.  
PRE LIGHTING  
CHECK  
Before initial lighting check the following points:  
1. The bottom grate bars must all be fitted and should move  
freely and easily when the riddling mechanism is operated.  
2. The plates round the sides and back of the grate must be  
in position and sitting correctly.  
3. The throat plate must be fitted in the roof of the  
appliance.  
COMMISSIONING  
On completion of the installation and after allowing time for  
the fire cement and mortar to dry out, the fire should be lit  
and checked to ensure that the smoke and fumes are taken  
from the appliance up the chimney and emitted safely. Also  
check all joints and seals.  
On completion of the installation and commissioning please  
leave the operating instructions with the customer and  
advise on the use of the appliance.  
Knock outs for optional boiler  
either side  
150°  
394  
156  
i/d  
84  
547  
608  
506  
405  
265  
199  
260  
147  
170  
548  
SLX20 Dimensions  
(All dimensions are in mm)  
Page 11  
SLX20 9.03  
 

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