Charnwood SLX45 MKII MULTI-FUEL Operating & Installation Instructions Manual

SLX45M K I I

MULTI-FUEL

Operating & Installation Instructions

charnwood

®

C O N T E N T S

O P E R AT I N G I N S T R U C T I O N S

General points

Fuels 4

Door Operation 5

Multi Fuel Grate 5

Controlling The Fire 5

System Controls 5

Refuelling 6

Overnight Burning

Throat Plate & Flueway Clearing 6

Special Points when Burning Coal 7

Maintenance

Chimney Sweeping 7

Trouble Shooting 8

CO Alarm

If You Need Further Help

INS TALLAT ION I NSTRUCT ION S

Health & Safety Precautions 10

CO Alarms

Performance

Chimney 10

1. Installation as an Inset Stove 11

Preparation of the Fireplace

Fitting the Fire 13

Flue Connections & Infilling

2. Installation as a Freestanding Stove 13

Thermostat 15

Assembly 15

Pre Lighting Check 15

Commissioning 15

Dimensions 16

Parts Lists 17

Certification 18

4

Lighting 5

Ash Clearance 6

Riddling 6

6

7

9

9

10

10

Specification 10

Hearth & Fire Surround 11

11

Central Heating System 12

System Controls 12

13

Ref. SLX45MKII 10.12

SLX45M K I I

MULTI- FUEL

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OPERATING INSTRUCTIONS

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GENE RAL POIN T S

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 8423:2010.

FUEL S

Coal

Housecoal doubles, trebles or cobbles may all be burnt. Do not use

singles, small nuts, or coal dust. It is important that large size coal is

used(i.e. larger than 2" or 50mm in size). 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’’.

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

from any obstructions.

Do not light the fire before the boiler and heating system

have been filled with water as this can damage the boiler.

If the appliance is fitted in place of an open fire then the chimney

should be swept one month after installation to clear any soot falls

which may have occurred due to the difference in combustion

between the appliance and the open fire.

Do not use an aerosol spray on or near the stove when it is alight.

There is a risk of explosion or flash ignition of the spray.

Your SLX45 stove has been designed to work with minimum effort. If

any operation - such as riddling the grate or opening and closing the

door - begins to require extra force then the cause must be

investigated to prev damage being caused to the

stove.

The stove is not suitable for use in a shared

flue system.

ent and correct

Remember that the stove will be hot and is made from hard material.

Ensure that you have good balance before operating the fire.

The following smokeless fuels are suitable for use on this appliance:

Ancit (Phurnacite Plus), Anthracite Large Nuts, Phurnacite,

Any fuel included on the HETAS list of Approved Smokeless Fuels for

Closed Appliances.

(http://guide.hetas.co.uk/guide/fuels_smokeless.html)

The above fuels are all suitable for use in smoke controlled areas. In

other areas the following fuels may also be burnt:

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 but 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 reduced outputs.

Fuel Type

Wood Logs

Smokeless Fuel

Output

5.8kW (19,800Btu/h)

6.3kW (21,500

Flue Gas Temp

326°C

336°C

Flue Gas Mass Flow

5.0 g/s

5.1 g/s

Max Hearth Temp.

90°C

182°C

Re-fuelling Cycle

0.84 hr (50 min)

4.0 hr

CO @ 13% O

2

0.16%

0.18%

Min Distance to
Combustible

INSET

FREESTANDING

Side

100mm

250mm

Above (inset)/ Rear

300mm

700mm

Min Flue Draft

25Pa (0.1in wg)

Stove Weight

125kg

Add-in Boiler

2.0 kW

XV080-CPD-2011

WOOD LOGS

0.16%

326°C

5.8

75.7

INSET

100mm
300mm

ANTHRACITE

0.18%

336°C

6.3kW

72.1%

FREESTANDING

250mm
700mm

Thermostat flap (behind side panel)

Airwash Control

pull to open

Turn handle

clockwise to open

Fig. 1. Controls

Thermostat Control Knob

PETROLEUM COKE IS NOT SUITABLE FOR USE ON 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

DOOR O PERATION

The doors are opened by raising the door handle as shown in Fig. 1.

When the fire is alight, avoid touching the doors other than on the

handle as the metal will become hot. When closing the doors do not

use excessive force.

LIGH TING

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 the 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. 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.

or

ring the Solid Fuel Association Helpline on

NOTE: This appliance has been approved by HETAS as a continuous

operating appliance for burning dry seasoned wood logs or

smokeless fuel.

HETAS approval does not cover the use of other fuels either alone or

mixed with wood logs nor does it cover the instructions for use of

other fuels.

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.

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.

0845 601 4406.

This is normal and will cease after a short time. In the meantime the

room should be kept well ventilated. Before relighting the fire, riddle,

remove any clinker from the firebed and empty the ashpan.

.

SYSTEM CON T ROLS

The heating system controls may consist of time switches, room

CONT ROLLI NG THE FIR E

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. The control knob is connected to the

water temperature sensing thermostat. 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.

For correct firing of the Freestanding model we recommend using a

stove pipe thermometer which may be purchased from your supplier

or from ourselves.

Liquid fuels are not to be used on this appliance

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OPERATING INSTRUCTIONS

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For Wood

Do Not Go Beyond
45° Position
When Riddling

Riddle Between
Horizontal &
45° Positions

Tool To Be
Horizontal
For Solid Fuel

Vertical

Tool to be

Or Peat

Fig. 2. Grate Operation

thermostats, outdoor temperature thermostats and thermostatic

radiator valves in virtually any combination. These will work in

conjunction with the thermostat control on the appliance. The

thermostat on the appliance will simply control the temperature of

the water coming from the boiler and hence the temperature of the

radiators and domestic hot water. The automatic controls (other than

thermostatic radiator valves) will switch the pump (and hence the

radiators) on and off. Your installer will be able to explain the

controls fitted to your system and how to operate them.

ASH CL EARANC E

The ashpan should be emptied regularly before it becomes too full.

The most convenient time to remove the ash is just before riddling

the fire since the ash will then 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 spilled fuel or ash.

Care should be taken to ensure that ash is cool before emptying it

into plastic liners or bins.

To make ash removal easier there is a special Charnwood ash

carrier available. This may be purchased from your supplier or, in

case of difficulty, from ourselves.

RIDD LING

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.

Caution: when riddling the grate using solid fuel do not go beyond the

45° position as this can cause the grate to jam.

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. Riddling twice a day is usually sufficient when

burning solid fuel. When burning wood, ash should be allowed to

build up and only riddled when the ash begins to cover the slots in the

rear fireplate.

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.

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).

For overnight burning the fire doors must be closed.

When burning solid fuel the ashpans should be emptied and the fire

riddled. 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

the new fuel has ignited, the thermostat control should be turned

down to the required setting and the airwash control moved to a low

setting. If the central heating pump is off overnight then the

thermostat may be left at the same setting for both day and night

operation. If the central heating pump is on overnight then set the

thermostat control to give the required level of heating.

Some experimentation will be necessary to find the settings most

suitable for the particular fuel used and the draw on the chimney. To

revive the fire, empty the ashpans, riddle, and open the air controls

to maximum. When the fire is burning well load on more fuel as

necessary and move the air controls to the desired setting.

When burning wood use large logs rather than small ones. Proceed

as above, but do not riddle the fire either when shutting down or

reviving.

REFU ELLING

OVERNIG H T BURNIN G

THROATPL AT E A ND
FLU EWAY CLEAN I NG

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 and more frequently if it is found necessary.

The throat plate and flueways 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 fall into the fire. Also scrape any soot

deposits from the sides and top of the firebox. Ensure that soot

deposits are not allowed to build up on the sides because if the

Keep the firebox well filled (the fuel may be sloped up from the front

firebars), but do not allow fuel to spill over the top of the front fire

bars. Take care that fuel does not project over the front fire bars or

damage to the glass may be caused when the doors are closed.

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OPERATING INSTRUCTIONS

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throat plate becomes tight between the faces this can cause it to fail

prematurely.

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.

SPEC IAL POINT S W HEN BURNI N G COAL

When loading the appliance 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.

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 long periods. It is

therefore vital to clean the throat plate regularly, daily cleaning is

recommended.

MAIN TENANC E

Cleaning

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.

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.

When not in use

If the fire is going to be out of use for a long period, (for instance in

When burning housecoal keep the airwash control at least slightly

open all the time (refer to Fig. 1.)

The appliance is finished in silicone paint or vitreous enamel.

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.

After long periods where the fire has been out of use, the chimney

and appliance flueways should be cleaned before lighting.

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 doors

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.

CHIM NEY SWEE P ING

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.

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 to the chimney must be cleaned

with a flue brush.

After clearing any soot from within the fire, replace the throat plate

and the front firebars.

Where the chimney previously served an open fire, it is possible that

the higher flue gas temperature from a stove may loosen soot

deposits with the consequent risk of flue blockage. It is therefore

recommended that the chimney be swept a second time within a

month of regular use after installation.

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OPERATING INSTRUCTIONS

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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.

TRO UBLE SHO OTING

Fire Will Not Burn

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.

Fire Blazing Out Of Control

Check that:

a) the doors are tightly closed,

b) the thermostat knob is turned down to the minimum setting,

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.

Over-Firing

If the fire is over-fired 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:

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,

d) the fire is not fitted onto a heating system which is too large.

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 (25Pa)

should be obtained.

Fume Emission

Warning Note: Properly installed, operated and maintained this

appliance will not emit fumes into the room. Occasional fumes

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:

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 and corrected, if necessary seek professional advise.

The most common cause of fume emission is flueway or chimney

blockage. For you own safety these must be kept clean.

a) Open doors and windows to ventilate the room and then leave

the premises..

b) Let the fire out and safely dispose of the fuel from the

appliance.

Freezing

Do not light the fire if there is any possibility that any parts of the

system may be frozen.

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.

After a chimney fire the chimney should be carefully examined for

any damage. Expert advice should be sought if necessary.

Lack of Heat To Radiators / Hot Water

Check that:

a) the fire is burning properly - if not then carry out the checks under

"Fire Will Not Burn".

b) the throat plate is fitted correctly, I.e. pushed back against the

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boiler, and that it Is not distorted.

c) the door seals are in good condition.

d) If the hot water goes cold when the pump is turned on, or if some

radiators are hotter than others, then the system may need balancing,

the pump may be pumping the water too quickly around the system,

or the radiators may need bleeding. Please ask your installer to check

these points.

Door Glass Blacks 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:

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 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 close the airwash control - as a guide it should

be at least a quarter open.

d) Wet wood or logs overhanging the front firebars will cause the

glass to blacken.

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. When the chimney is warm a

draught reading of at least 2.5mm (0.10 inches) water gauge should

be obtained.

CO ALA RM

Your installer should have fitted a CO alarm in the same room as the

appliance. If the alarm sounds unexpectedly, follow the instructions

given under “ Warning Note” abo ve.

IF YOU NEED FURTHER HELP

If you need further help with your Charnwood then your Installer will

be able to provide the answers to most questions. Your Local

Charnwood Premier Dealer has a great deal of experience and will

also be able to provide helpful advice. Further help is available from

the Charnwood Customer Services department who will be pleased

to give advice, if necessary.

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HEALTH AND SAF ET Y PRECAUTIONS

PERF ORMANC E

The rated outputs for the Charnwood SLX45 are shown in the

Specification table. These outputs are obtained during the standard

tests burning fuel with the doors closed over a 4 hourly re-fuelling

interval for solid fuel and 1.5 hourly period for wood.

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 a possibility of disturbing any asbestos in the course of

installation then please use appropriate equipment.

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.

There must be an adequate air supply to the room in which the

2 2

appliance is installed totalling at least 52 cm . (8 in ) to provide

combustion air. This is particularly necessary if the room is double

glazed.

This stove is capable of continuous operation when burning Wood

logs or Smokeless fuel.

This stove is not suitable for use in a shared flue system.

In addition to these instructions the requirements of BS.8303 and

BSEN 15287-1:2007 must be fulfilled. Local Authority Bylaws and

Building Regulations, including those referring to national and

European Standards, regarding the installation of Solid Fuel burning

appliances, flues and chimneys must also be observed.

CO ALA RMS

Building regulations require that whenever a new or replacement

fixed solid fuel or wood/biomass appliance is installed in a dwelling a

carbon monoxide alarm must be fitted in the same room as the

appliance. Further guidance on the installation of the carbon

monoxide alarm is available in BS EN 50292:2002 and from the

alarm manufacturer's instructions. Provision of an alarm must not be

considered a substitute for either installing the appliance correctly or

ensuring regular servicing and maintenance of the appliance and

chimney system.

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INSTALLATIO N I N S TRUCTIONS

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Fuel Type

Wood Logs

Smokeless Fuel

Rated Output

12.3kW(41,970Btu/h)

14.3kw (48,791Btu/h)

Space Heating Output

6.0kw (20,472 Btu/h)

4.6kw (15,695 Btu/h)

Water Heating

6.3kw (21,496 Btu/h)

Flue Gas Temp

343°C

433°C

Flue Gas Mass Flow

7.8 g/s

10.8 g/s

Max Hearth Temp.

62.4°C

181.6°C

Re-fuelling Cycle

1.5hr

4.0 hr

CO @ 13% O

2

0.78%

0.14%

Min Distance to
Combustible

INSET

FREESTANDING

Side

50mm

200mm

Above (inset)/ Rear

200mm

300mm

Max WaterPressure

1.5 Bar (50 foot water)

Boiler Volume

10.14 Litres

Min Flue Draft

25Pa (0.1in wg)

Stove Weight

135kg

9.7kw (33,096 Btu/h)

The heat output to the room is directly proportional to the heat

output to water as shown in Fig. 4. This means that if the water

heating load is less than the rated output then the room heating will

be reduced by the same proportion. This must be borne in mind

when calculating the heating requirements.

CHIM NEY

In order for the appliance to perform satisfactorily the chimney

height must not be less than 4 metres measured vertically from the

outlet of the fire to the top of the chimney. The chimney should

SPEC IFICATION

preferably be 175 mm (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.

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 (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 the stove is fitted in place of an open fire then the chimney should

be swept one month after installation to clear any soot falls which

may have occurred due to the difference in combustion between the

stove and the open fire

If it is found necessary to line the chimney then a lining suitable for

Solid Fuel must be used. If there is no existing chimney then a

prefabricated block chimney or a twin walled insulated stainless steel

flue to can be used either internally or

externally. These chimneys must be fitted in accordance with the

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.

If it is found that there is excessive draw in the chimney then a

draught stabilizer should be fitted.

BSEN 15287-1:2007

0

2.0

4.0

6.0

8.0

10.0

2.0

Boiler

Output

(kW)

Space Output (kW)

Fig. 4. Performance Chart

4.0 6.0

Solid Fuel

W

ood

1. INSTALLATION AS AN INSET STOVE

The SLX 45 is supplied with one of two panel packs that makes it

either an Inset stove SLX45i or a Freestanding stove SLX45fs. The

following sections apply specifically to the Inset Installation. The

Freestanding installation is mentioned later

HEARTH AND FI RE SURRO UND

The appliance must be installed on a fireproof hearth. The positioning

of the appliance and the size of the hearth are governed by building

regulations for Solid Fuel 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 advice should

be sought either from the supplier or the local building inspector.

The fireplace must allow sufficient airflow around the appliance to

provide combustion air and to allow the heat to be transferred to the

room. The fire surround must be able to withstand the temperatures

generated in normal use. If a wooden mantel is used it should be at

least 200mm (8 inches) above the appliance. Wooden surrounds

must be at least 100mm (4 inches) from the sides of the appliance. In

order for the appliance to fit into the fire surround there must be a

flat area around the opening, details are shown in Fig. 5.

PREPAR AT ION OF FIR E PLAC E

Before fitting the appliance into an existing fireplace remove the

fireback and any loose in-fill material.

The surround and opening for the appliance must conform with Fig.

5. The flat area around the opening should be a minimum of 750 mm

wide and 660 mm high. Ensure that the hearth and the base in the

opening are flat, level, and at right angles to the surround.

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INSTALLATIO N I N S TRUCTIONS

SLX 4 5

MU LTI -FU EL

11

Fig. 5. Limiting Dimensions Of Surround And Opening

A

B

Dim. A:

Dim. B:
Max. 575mm (22 2/3")
Min. 555mm (21 3/4")

Max. 470mm (18 1/2")
Min. 405mm (16")

The shaded area on the face of
the surround is the minimum flat
area required for Inset Installation.

660 mm

750 mm

Make two holes in the chimney breast, one in the front to give access

for infilling and fixing the flue pipe, and one in the side to give access

for the pipework.

CENT RAL HEATIN G SYSTE M

The central heating system must comply with BS:5449 part 1.

If the system is to be a combined heating and domestic hot water

system then a double feed indirect hot water storage cylinder to

BS:1566 part 1 should be used. In order to prevent the build up of

scale and corrosion a suitable inhibitor should be used. The system

must be correctly vented as shown in Figs. 6 and 7. The height

differential between the header tank and the appliance must not

exceed 15.2 metres (50 feet).

If all four boiler tappings are used then, if possible, diagonal pairs

should be connected for domestic hot water and central heating.

Where a common return is used an injector tee must be

incorporated into the system as shown in Fig. 8. This will ensure that

a good domestic hot water supply is maintained when the central

heating pump is operating.

The system must incorporate a gravity circuit which will normally heat

the domestic hot water and an unvalved radiator with an output of at

least 1 kW. When the appliance is not connected to a domestic hot

water system the unvalved radiator(s) on the gravity circuit must have

an output of at least 1.25 kW. This is to prevent boiling in case of

pump failure. All pipework in the primary circuit must be 28 mm

diameter and the gravity flow pipe must rise continuously from the

boiler to the open vent. Two typical systems are shown in Figures 6.

and 7.

If the appliance is used to heat a small central heating system then the

heat output to the room from the fire will be reduced. Fig. 4. shows

the ratio of space heating to water heating which can be expected.

Fitting a radiator in the same room as the fire is recommended as it

will allow greater flexibility In the way that the system is operated as

well as ensuring that there is sufficient heat.

SYSTEM CON T ROLS

The circulating pump may be controlled by means of time switches,

room thermostats or outdoor thermostats. Radiators may be either

manually or thermostatically controlled. These controls will all work

in conjunction with the thermostat on the appliance and the minimum

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INSTALLATIO N I N S TRUCTIONS

SLX 4 5

MU LTI -FU EL

Gravity Return

(28mm Pipe)

Central Heating Return

Common Return to Boiler

(28mm Pipe)

Fig. 8. Injector Tee

Fig. 7. Typical Central Heating & Hot
Water System Using 3 Tappings

Central Heating Return

Drain Cock at Lowest Point

Drain Cock

Gravity

Return

28mm

Gravity

Flow

28mm

Indirect Hot Water Cylinder

Domestic Hot Water Draw Off

Cold Water Tank

Overflow

Overflow

Feed and Expansion Tank

22mm Open Vents

Gravity Radiator

Circulating Pump

Injector Tee

Minimum Return Thermostat

Central Heating Flow

12

Fig. 6. Typical Central Heating & Hot
Water System Using 4 Boiler Tappings

Central Heating Flow

Central Heating Return

Drain Cock at Lowest Point

Drain Cock

Gravity

Return

28mm

Gravity

Flow

28mm

Indirect Hot Water Cylinder

Cold Water Tank

Overflow

Feed and Expansion Tank

22mm Open Vents

Gravity Radiator

Circulating Pump

Minimum Return
Thermostat

Overflow

Domestic Hot Water Draw Off

return thermostat.

We recommend fitting a pipe thermostat onto the gravity return pipe

and wiring it into the mains supply to the pump so that if the gravity

return temperature drops below 45° C then the pump will cut out.

This will help to prevent condensation forming on the boiler faces and

will thereby increase the life of the boiler. It will also ensure that

priority is given to the domestic hot water. These thermostats are

available from ourselves if you are unable to obtain them locally.

FITT ING THE FI R E

In some cases it may be necessary to place the connecting flue pipe in

the chimney before fitting the fire into the fireplace.

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

fire should be screwed to the hearth through the holes at the base of

the sealing flange.

Connect the heating system to the boiler ensuring that the primary

flow pipe rises from the appliance. Fill the system with water and

check for leaks.

FLU E CONNEC TION AND I N FILLIN G

Make the flue connection with a short length of 150mm (6’’) internal

diameter flue pipe (cast iron to BS41:1973, 1.0 mm thick stainless

steel, or 5.0mm thick mild steel).

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 chimney is swept. If necessary a flue offset is available. The offset

may be used directly with stainless steel flue pipe or may be used with

cast iron flue pipe in conjunction with a cast iron adaptor. If the flue

pipe has to be set at an angle then cut the ends so that it sits

correctly.

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 granules to one

volume of Portland cement thoroughly mixed together. Enough

water should be added so that no more than one or two drops of

water are released when a handful of the mixture is squeezed.

After filling with vermiculite flaunch the top of the flue connector

pipe to the chimney with lime mortar.

Make good the holes in the front and side of the chimney breast

making sure that they are completely airtight. A typical installation is

shown in Fig. 9.

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.

2. INS TA L LATION AS A
FREE STA NDING STOV E

The SLX45 may be installed as a Freestanding Stove when supplied

with the Freestanding Panel Pack 020/KV52. Typical installations are

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INSTALLATIO N I N S TRUCTIONS

SLX 4 5

MU LTI -FU EL

Fig. 9. Typical Installation into standard chimney

Vermiculite
Infill

Flaunching

Short Length

or Flue Offset.

Of Flue Pipe,

13

shown in Figs. 10 & 11 and may be either on a freestanding hearth or

in an ‘Inglenook’ type fireplace. In these configurations the minimum

distances to combustible materials must be 200mm from the sides of

the stove and 300mm from the back. Stud wall is counted as

combustible, and if this distance is required to be reduced, then

additional shielding must be provided.

The Hearth requirements are the same as the Inset Installation.

If the stove is to be installed on a freestanding hearth, as shown in

Fig.10, then the fireplace may be bricked up and filled with non-

combustible material, and the chimney breast broken into higher up

the wall, and a sleeve inserted to take the Fluepipe. The angle

between the vertical and the sleeve/fluepipe must be not less than

135°. It is advisable for the vertical section of the Fluepipe to be at

least 600mm long. A soot door for debris clearance / chimney

sweeping must be provided and this may be in the side or front of the

chimney breast, or outside.

If the stove is to be installed in an ‘Inglenook’ type Fireplace, then

there must be sufficient space around and above it for air to circulate,

and for access for servicing. This requires a minimum of 150mm each

side and 300mm above. There must not be any combustible materials

within these distances. A steel ‘Register’ plate will be fixed into the

chimney, preferably at a height where the chimney narrows down so

as to avoid having a large air void above the register plate. The

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INSTALLATIO N I N S TRUCTIONS

SLX 4 5

MU LTI -FU EL

14

Fig. 10. Freestanding Installation with
Chimney Connection above the Fireplace

Alternative
positions for
Soot Door
for sweeping
and debris
clearance

Masonry Chimney

135°
Min

150mm(6") Fluepipe
sleeved through
chimney wall

Old fireplace
filled with non­combustible material
and bricked up.

Metal Closure
Plate or
‘Register Plate’

Min 300mm from
combustible materials

Recommended
min vertical
section
600mm(24")

Alternative Soot Door Positions

Metal Closure Plate
or ‘Register Plate’
With Soot Door

Masonry
Chimney

Fig. 11. Freestanding Installation with Chimney
Connection in ‘Inglenook’ type Fireplace

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INSTALLATIO N I N S TRUCTIONS

SLX 4 5

MU LTI -FU EL

15

fluepipe from the stove will protrude a small amount through the

hole in the register plate, and will be sealed in position. This is shown

in Fig.11.

THER MOSTAT

Before lighting the fire check the cold setting distance of the

thermostat.

With the control knob at the minimum setting the flap should be just

closed as shown in Fig. 12. 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.

ASSE MBLY

Fit the side panels and hood onto the appliance. Instructions for this

are enclosed with the panel pack. Replace any internal parts

previously removed.

PRE LI GHTING C H ECK

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 and

should be pushed back so that it touches the knee of the boiler.

COMM ISSION I NG

On completion of the installation and after allowing a suitable period

of time for the fire cement and mortar to dry out, the fire should be

lit and checked to ensure that smoke and fumes are taken from the

appliance up the chimney and emitted safely. Also check all joints and

seals.

The central heating pump should be adjusted to give the correct

water flow against the circuit resistance and the system should be

correctly balanced.

On completion of the installation and commissioning please leave the

operating instructions with the customer and advise on the use of the

appliance and any controls on the system.

Fig. 12. Thermostat Setting

Thermostat Flap

Locking Nut

Flap Just Closed With

Knob Set To Minimum

170

548

147

547

250

464

280

357

394

236

ø168

608

1

0

4

5

2

3

2 Boiler tappings each side
1” B.S.P. Female.

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SLX45 DIMENSIONS (MM)

SLX 4 5

MU LTI -FU EL

601

126

610

469

546

135

408

590

531

549

Height to Top

of Flue Ring

Flue
Centre
Line

16

Issue A

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SLX45 MKII PARTS LIST

SLX 4 5

MU LTI -FU EL

®

char n w o od

T: [phone] • F :+44 ( 0) 198 3 5 377 88 • S PAR ES @C HA RNW OOD .C OM • W WW. CH ARNW OO D.CO M

BI SHOPS WAY, NE WP ORT, ISLE OF WI GHT P O30 5 WS , U NI TE D K IN GDOM

To obtain spare parts please contact your local stockist giving
Model, Part No. and Description. In case of difficulty contact
the manufacturer at the address shown.
This drawing is for identification purposes only.

* These items are not shown on the drawing.
## Please specify colour when ordering.
** These items are included in the Freestanding Panel Pack

17

Item Part No Description Item Part No Description

1* 008/KV35S Door Seal Set Inc. Adhesive 26 012/KV19 Riddler Rod
2* 008/FW29 Door Seal Adhesive 27 012/CG05 Idler Rod
3 006/KV18 Glass (Inc Seal) 28 008/FW48 Thermostat
4* 008/KV55 Glass Seal Kit 29 008/FV49 Thermostat Flap
5 004/KV23 Glass Retainer 30 005/KV04/## L.H. Side Panel
6 008/TV27 Hinge Post 31 005/KV05/## R.H. Side Panel
7 008/BW39/S Hinge Pin Set 32 005/KV06/## Lower Hood Panel
8 008/KV16 R.H. Door Handle 33 005/KV09/## Top Hood Panel
9 002/KV14 Door Catch Cam 34 003/TV01/## L.H. Door
10 008/KV13 L.H. Door Knob 35 003/TV02/## R.H. Door
11 010/RW21 Ashpan/Riddling Tool 36 009/SLX45/A Replacement Firebox/Boiler Assy.
12 012/FW34 Scraper Tool 37 012/KV12 Serial No. Label
13 008/BW50 Thermostat Knob 38 008/FFW010 Washer
14 002/KV07 Front Firebar 39 008/FFW015 M12 Double Coil Spring
15 002/KV11 Front Firebar Back Plate 40 004/ST008 Tabbed Locking Washer
16 002/KV08 Deepening Bar 41** 010/KV29 Freestanding Panel Fixing Bracket
17 002/AV31 Throat Plate 42** 020/KV52/## Freestanding Panel Pack
18 002/FW15 Side Fire Plate 43* 010/FW51 Ash Carrier (Optional Extra)
19 002/FW16 Back Fire Plate 44 008/FFN001 12mm Halfnut
20 002/CG01 Bottom Grate Bar 45 010/XV05 Airwash Manifold
21 002/CG01S10 Set of Grate Bars (10) 46 002/TW13 Air Slide Knob
22 004/KV17 Ashpan 47 012/XV09 Airwash Slide
23 012/KV33 Mover Bar 48 010/KV34 Air Inlet Manifold
24 002/KV30 Carrier Bar 49 012/XV09/03 Airwash Slide
24a 008/BW40 Carrier Bar Roll Pin (pair) 50 012/XV09/02 Airwash Slide guide
25 002/CG06 Riddler knob

24a215

42

49

11

42

3

42

25

30

29

41

12

28

36

18 22 23

67 8

42

32

9

24

35

34

26

14

15

3

50

10

16

13

18

19

31

45

47

46

17

33

48

27

20

37

9

40

39

44

38

1818

A Division of A.J.Wells & Sons Limited Registered in England No. 03809371

12

Bishops Way, Newport, Isle of Wight PO30 5WS, United Kingdom

A.J WELLS & SONS LTDA.J WELLS & SONS LTD

BSEN 13229:2001 EN13240:2001

SLX45M KI I

MULT I -F UE L

ROOMHE AT E R & BOILE R F I R E D BY S O LID FUE L

EC Certificate of conformity no:

KV080-CPD-2011

Maximum operating pressure:

1.5 bar

Fuel types:

WOOD LOGS

ANTHRACITE

Emission of CO in combustion products:

0.78%

0.14%

Mean flue gas temperature:

343°C

433°C

Thermal output:

12.3kW

14.3kW

Space heating output:

6.0kW

4.6kW

Water heating output:

6.3kW

9.7kW

Energy efficiency

75.5%

70.6%

Minimum distance to combustible materials
Side:
Above (inset) / rear:

INSET

50mm

200mm

FREESTANDING

200mm
300mm

A D i v i s i o n o f A . J . W e l l s & S o n s L i m i t e d R e g i s t e r e d i n E n g l a n d N o . 0 3 8 0 9 3 71

char n w o od

T : + 4 4 ( 0 ) 1 9 8 3 5 3 7 7 7 7 • F : + 4 4 ( 0 ) 19 83 5 3 7 7 8 8 • C O N T A C T U S A T W W W. C H A R N W O O D . C O M

BI SHOPS WAY, NE WP ORT, ISLE OF WI GHT P O30 5 WS , U NI TE D K IN GDOM

y ou r p re m ie r d ea l er

REV. SLX45MKII 10.12

®