Charnwood DX20i MkII User Manual

CHARNWOOD

DX20i MkII

Multifuel Roomheater

Operating

and

Installation Instructions

Bishops Way, Newport, Isle Of Wight, PO3O 5WS, U.K.

Tel: [phone] Fax: [phone]

OPERATING INSTRUCTIONS FOR THE

CHARNWOOD DX20i MKII

GENERAL POINTS

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.

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 installation
to clear any soot falls which may
have occurred due to the difference in
combustion between the appliance
and the open fire.

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 fuels may be burnt on
this fire. Please pay careful attention
to the special points made with each
type of fuel as they will help you to
get the best from your fire. It must be
remembered that only smokeless fuels
may be burnt in smoke control areas
on this fire. If you are not sure

whether you are in a smoke control
area, then please check with your
Local Authority.

Smokeless Fuels

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

Ancit (Phurnacite Plus),
Anthracite Large Nuts,
Centurion,
Extracite,
Maxibrite,
Phurnacite,
Sunbrite Doubles,
Welsh Dry Steam Coal (Large Nuts).

The above fuels are all suitable for
use in smoke control areas. New
smokeless fuels are regularly
produced, and your fuel supplier will
be able to recommend those which
will be suitable.

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 50mm or 2" 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".

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.

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, or ring the Solid Fuel
Association Helpline on Freephone
0800 600 000.

DOOR OPERATION

Use the spanner type tool to open and
close the doors. Turn the knob on the
right hand door anti-clockwise to
open and clockwise to close. When
closing the doors do not push on the
enamel with the tool as this can chip
the enamel, instead push the doors on
the door knobs.

There is a safety device fitted to the
fire which prevents the main doors
being closed when the ashpit door is
open. This is to prevent accidental
over-firing.

The sequence for opening and closing
the doors is as follows:

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Open the main doors Open the ashpit
door Close the ashpit door Close the
main doors

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 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, fully
open the airwash control and light
the paper or fire lighters. Leave the
doors slightly ajar until the fuel is
well ignited then load with more fuel,
close the doors and adjust the
thermostat and airwash control to the
desired setting. Leaving the main
doors slightly ajar when lighting will
keep the glass clean while the
airwash is warming up.

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.

Airwash

Control

Closed Open

Fig.2. AirwashAir Co ntrol

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 airwash 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.

RUNNING THE FIRE

WITH THE DOORS

Control
Knob

Air Inlet Damper

Fig.1.Therm ostat Control

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, (see Figs. 1 & 2.) Use the
control knob on the left to control the
heat output from the fire and keep the

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OPEN

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

For safety reasons, if the fire is to be
left unattended with the doors open
then use a spark guard which
complies with BS 3248.

ASH CLEARANCE

The ashpan must 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 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.

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.

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.

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 the fire is very
low then it may be necessary to add a
little fuel and turn the thermostat
control up for a brief period until the
fire is burning well before filling with
fuel. When burning wood use large
logs overnight as they will burn more
slowly than small ones.

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° position several times as
shown in Fig. 3.

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

ToolTo Be

Ve rtical For

Do Not GoBeyond
45ºPositi on
WhenRi ddling

Riddl eBetween
Horizontal&
45ºPositi ons

ToolToBe
Hori zontal For
SolidFuel

Wood

Fig. 3. GrateOperation

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 or peat).

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
and the airwash control nearly closed
overnight.

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 and open
the airwash control. When the fire is
burning well load on more fuel as
necessary and set the thermostat and
airwash controls 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 desired setting
and refuel as necessary.

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