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position as required (the tool should
be horizontal for solid fuel or vertical
for wood or peat).

REFUELLING

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, 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.

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.

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 may be
necessary to find the setting most
suitable for the particular fuel used
and the draw on the chimney.

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 knob to maximum. When the
fire is burning well load on more fuel
as necessary and turn the control
knob to the desired setting.

When burning wood do not riddle but
simply turn the air control to
maximum until the fire picks up and
then set the air control at the desired

setting and refuel as necessary.

THROAT PLATE AND

FLUEWAY CLEANING

It is important that every month the
throat plate and all the appliance
flueways are thoroughly cleaned. 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 run at low levels for long
periods. If this is the case then more
frequent cleaning will be necessary.

SPECIAL POINTS

WHEN BURNING

COAL

When burning housecoal keep the
secondary air control open all the
time.

When loading the fire 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.

CLEANING AND

MAINTENANCE

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.

The glass in the doors is a zero
expansion ceramic glass which will
not crack due to the heat of the fire.
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

Page 5

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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