With ues of greater efciency or taller chimneys, smoke clearance may be possible with the air supply lever almost
completely closed. Note that in the latter case, a small area is left open to guarantee chimney ventilation.
Damping down over long periods (overnight) with logs, the re should be allowed to die down before banking up
the fuel and closing the air supply to the minimum while maintaining smoke clearance. Banking up and closing
the air supply on a hot re may cause the re to roar away, overheat and burn out quickly. The right technique
comes with a little experience, and varies with the fuel being burnt.
Seasonal Use
In the summer months or at times when the re is not being used then the air supply lever may be closed to
eliminate draughts and to minimise the air loss from the room.
Fuels
FUEL DATA
MODEL
WOOD
MAXIMUM WOOD SIZE
Length & Diameter
MAXIMUM REFUEL
WEIGHT
MINIMUM REFUEL
INTERVAL
mm
Kg
Min
18i
200 Lth
Ø100
1.75*
60*
60i
400 Lth
Ø100
2.25*
60*
70i
500 Lth
Ø100
3*
60*
The data marked * on the 18i and 70i are Jetmaster estimated gures
The table shows the recommended fuel sizes, weights
and refuel interval to achieve the outputs given on
page 5 in accordance with EN13229: 2001.
Recommended Fuel Types
1. Smokeless Fuels
Smokeless fuels may be burned in basket grates.
Use smaller lumps and some slack when banking
down for longer periods of unattended burning.
Of the smokeless fuels, Coalite, Homere and
Anthracite are particularly suitable. Furnace fuels
and petroleum based solid fuels should not be used
in Jetmaster Stoves.
2. Wood (Recommeded and approved fuel for re to meet requirement of EN13229:2001)
Wood has about half the caloric value of coal, on a weight for weight basis. “Green” wood has a high moisture
content, which makes it difcult to burn, and reduces net heat output.
Buying a load of green rewood means you may have been buying as much water as you are wood. When wood
is burned, the water content is converted into steam. The large amount of heat necessary to do this accounts for
the reduction in useful heat. Air-drying, or seasoning, reduces moisture content, thus making it easier to burn.
Where green wood must be burned, rst build to a strong heat to ensure that enough excess heat is produced
to dispose of the moisture.
The readiness of wood to burn depends on the density and the size of each piece. Denser hardwoods are
generally better than softwoods such as pine, which when dry burn fast and split. A split log will catch and burn
better than a full round log. Only well seasoned wood should be used. This also helps to burn off more of the
tars, and to reduce the build up of tar deposits.
The re burning rate can thus be controlled by the amount of fuel that is used the size of fuel and the refuelling
interval as well as the control of the air supply lever. Kindling wood will burn fast, split logs at a medium rate and
whole logs a little slower. So by mixing the sizes that are burnt and used in conjunction with the air supply control
the re rate of burn and hence output can be controlled.
Any of the dense hardwoods are recommended such as:- Birch, Beech, Hornbeam, Oak, Ash, Elm and numerous
others not mentioned.
Cleaning and Maintenance
The visible front parts of the re can be repainted with heat resistant black paint. These parts can be repainted
every 1 or 2 years as required but generally dusting with a soft brush should keep the re looking good. The
interior of the rebox and the grate should not be painted.
To maintain the nish on Decorative Surrounds wipe with a soft damp cloth only. Do not use abrasive cleaners,
polish or solvents as these can damage the surface nish.
Glass Door
If over a period of time the glass door starts to soot then this maybe cleaned with a proprietary cleaner available
from your dealer.
ALL CLEANING MUST BE CARRIED OUT WITH THE APPLIANCE COLD.
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