Charnwood LA30iB Running the Fire with the Doors Open, Heating System, ASH Clearance, Riddling

anthracite, or homefire which should be burnt with the secondary air inlet open.

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 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.

Open

Secondary Air

Flap (shown

closed)

Fig. 2. Secondary Air Control

HEATING SYSTEM

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 fire. The thermostat on the fire will simply control the temperature of 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 itís 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

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.

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.

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After riddling, the grate should be put back into the solid fuel position (the tool should be horizontal).

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 that fuel does not project over the front fire bars or damage to the glass may be caused when the doors are closed. If any pieces of fuel have been inadvertently loaded onto the top of the throat plate, then remove them using the scraper tool.

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 to maximum for a brief period until the fire is burning

Do Not Go Beyond

45° Position

When Riddling

Riddle Between

Horizontal&

45° Positions

AfterRiddling

Move Tool

To Horizontal

Position

Fig. 3. Grate Operation

LA30iB 3.99