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the tool supplied. The grate is put
into the wood position by moving the
tool in the direction of the arrow ‘W’
(marked on the handle of the tool)
until the tool is vertical. The grate is
put into the solid fuel position by
moving the tool in the direction of
the arrow ‘C’ 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.

LIGHTING

Set the grate into either the wood
position or the solid fuel position as
required. 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. 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.

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. This is linked to a
thermostat which controls the boiler
temperature. The number at the top
of the knob is the number at which it
is set. Some experimentation may be
necessary to obtain the desired heat
output.

There is also a manual secondary air

control which is located below the
right hand side panel. When the arm
is pointing forwards it is closed,
when pointing to the right it is open
This control should be in the closed
position when burning most
smokeless fuels and in the open
position when burning coal, wood,
peat, anthracite, or homefire.

RUNNING THE FIRE

WITH THE DOORS

OPEN

The fire may be run with the doors
open. This will result in a reduction
in efficiency and hence heat output,
particularly to the boiler. The more
reactive fuels, like coal, homefire,
wood, and peat, will burn better when
the doors are open than fuels like
phurnacite, sunbrite and ancit.

For safety reasons use a spark guard
and do not leave the fire unattended
with the doors open.

SYSTEM CONTROLS

The heating system controls may
consist of time switches, room
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 CLEARANCE

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 its
coolest. Use the tool provided to
remove the ashpan.

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.

RIDDLING

When burning solid fuels riddling
twice a day is usually sufficient.
When burning wood or peat, ash
should be allowed to build up and
generally riddling every other day
will be sufficient.

The fire should be riddled with all
doors shut. Place the tool on the knob
and rotate between the horizontal and
the 45 degree position several times.

When burning wood or peat do not
riddle all the ash into the ashpan,
keep a layer about 12 mm (1/2 inch)
thick on the grate.

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

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

Page 4

CW40B 3/95

Summary of Contents for CW40B

Page 1: ...Operating and Installation Instructions Charnwood CW40B Multifuel Roomheater With Boiler Bishops Way Newport Isle of Wight PO3O 5WS U K Tel 01983 537799 Fax 01983 537788 ...

Page 2: ... Burning 5 Throat Plate Flueway Cleaning 5 Special Points When Burning Coal 5 Cleaning Maintenance 5 Chimney Sweeping 6 Trouble Shooting 6 Installation Instructions Health Safety Precautions 7 Performance 7 Chimney 7 Hearth 7 Connections To Flues 8 Soot Doors 8 Central Heating System 8 System Controls 8 Thermostat 9 Pre Lighting Check 9 Commissioning 10 Overall Dimensions 10 Exploded Parts Drawing...

Page 3: ...for use in smoke control areas 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 ie larger than 2 or 50 mm 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 When Burning Coal on page 5 Wood Only dry well seasoned woo...

Page 4: ...d and do not leave the fire unattended with the doors open SYSTEM CONTROLS The heating system controls may consist of time switches room 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 ...

Page 5: ...ed It is not necessary to let the fire out completely to do this The throat plate should be lowered using the tool The method of doing this is shown in Fig 1 Any sooty deposits should then be swept from the plate and into the fire Using the tool provided the two boiler tubes should be cleaned as shown in Fig 2 More soot will be deposited on the throat plate and in the flueways if the appliance is ...

Page 6: ...o sweeping should be consulted TROUBLE SHOOTING 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...

Page 7: ...red vertically from the outlet of the fire to the top of the chimney The chimney should 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 c...

Page 8: ...e must be incorporated into the system as shown in Fig 9 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 at least one unvalved radiator When the appliance is not connected to a domestic hot water system the unvalved radiator s on the grav...

Page 9: ...re that the flap opens and closes freely as the knob is turned 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 The location of the side fire plates the back fire plate ...

Page 10: ...itted 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 Charnwood CW40B Overall D...

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