Charnwood LA 45, LA 50iB Operating & Installation Instructions Manual

Operating & Installation Instructions

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®

CONTENTS

OPERATING INSTRUCTIONS

Fuel

Door Operation

Grate

Controlling the Fire

Riddling

Refuelling

Ash Clearance

Overnight Burning

Cleaing and Maintenance

Throat Plate and Flueway Cleaning

Chimney sweeping

Trouble Shooting

Health & Safety Precautions

Performance

Specification

Chimney

Hearth & Fire Surround

Central Heating Sytem

System Controls

Connection to Flues

Soot Doors

Thermostat

Pre Lighting Check

Commissioning

Dimensions

Parts Lists

Certification

4

4

4

5

5

5

5

5

6

6

6

7

9

9

9

9

10

11

12

12

12

13

13

13

14

15

16

INSTALLATION INSTRUCTIONS

4

Lighting

Ref. Country LA50iB 2.01

DOOR OPERATION

LIGHTING

CONTROLLING THE FIRE

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.

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.

The rate of burning and hence the output is controlled by the
control knob on the left hand side of the appliance, shown in
Fig. 1. 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.

GENERAL POINTS

FUELS

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.

This appliance has been designed to conform with BS.3378. It
has obtained the approval of HETAS Ltd. (formerly DSFAAS
Ltd.) for burning the following Smokeless Fuels.

HETAS Ltd. approval covers the burning of the following
smokeless fuels on this appliance:

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

HETAS Ltd. approval does not cover the use of other fuels
either alone or mixed with the above fuels, nor does it cover
instructions for the use of other fuels.

The above fuels are all suitable for use in smoke control areas.
In non-smoke control areas your Housing Authority will be
able to advise you if other fuels may be burnt. For instructions
on burning other fuels please ask your supplier or Housing
Authority for the "Charnwood Instruction Supplement"?.

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.

PETROLEUM COKE IS NOT SUITABLE FOR USE ON

THIS APPLIANCE, ITS USE WILL INVALIDATE THE

GUARANTEE

4

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charnwood

OPERATING INSTRUCTIONS

1

2

3

4

5

0

Fig. 1. Thermostat Control

Control

Air Inlet

Knob

Damper

There is also a manual secondary air control which is located
above the door opening as shown in Fig. 2. To adjust the
setting, open the doors and use the door opening tool to
move the flap to the desired position. This control should be in
the closed position when burning any of the recommended
smokeless fuels except for anthracite and homefire which
should be burnt with the secondary air inlet 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 Homefire, 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.

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

RUNNING THE FIRE WITH THE DOORS

OPEN

SYSTEM CONTROLS

For correct firing we recommend the use of a stove pipe
thermometer which may be purchased from your supplier or from
ourselves.

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.

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 ashpan/riddling tool provided to remove the ashpan,
the fold up carrying handle may be held with a heat proof
glove and/or the door opening tool as shown in Fig.2a

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

available. This may be purchased from your supplier

or, in case of difficulty, from ourselves.

Riddling twice a day is usually 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.

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.

ASH CLEARANCE

RIDDLING

Charnwood ash

carrier

5

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OPERATING INSTRUCTIONS

Fig. 2. Secondary Air Control

Open

Secondary Air
Flap (shown
closed)

Use the door
opening tool to hold the carrying handle

a heat proof glove and/or

Use the ashpan/riddling tool
to support the front of the ashpan

Fig. 2a. Handling The Ashpan

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