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1. INTRODUCTION - THE PRINCIPLE OF THE FIRE
Your Aarrow Fire is built to the highest standard of craftsmanship using the best materials and the most modern
equipment available. It is a highly efficient and sophisticated piece of machinery and when properly installed and
operated it should provide a lifetime of heating satisfaction.
Safety is the most important consideration when installing your fire. If not properly installed and operated a
house fire may result. You should check your local Building Regulations and conform to all relevant fire safety
standards.
Aarrow Fires produce a variety of appliances that range from the traditional in appearance to the ultra modern,
all bristling with "High tech" features.
Model types include simple room heaters, convectors, integral boiler models and inset units. Your Aarrow fire is
constructed from twin wall steel strengthened where necessary. Cast iron is used where appropriate for long life.
All fire doors are fitted with special high temperature ceramic glass panels through which the fire can be viewed.
All units are fitted with a cast iron grate to give full multifuel facility and positive de-ashing.
All models except integral boiler models and insets are lined with heat reflective panels which ensure complete
combustion and provide a good heat store to even out fluctuations in burning.
An internal throat plate produces turbulence to encourage secondary combustion and directs the flue gas around
the whole upper firebox before allowing it to escape to the chimney.
The primary air for burning enters the ash pit chamber beneath the grate, controlled by the air inlet mechanism or
by the thermostatically controlled damper where fitted.
The provision of two inlets gives a wide range of primary air/secondary air, under draught/over draught
combinations. The optimum settings will only be established by experience in the firing the appliance, and will
depend on type of fuel, the position of the appliance in the house, condition of chimney etc.
Aarrow fires are also fitted with an "air wash" so called because it provides a curtain of high speed preheated air
in front of the glass to help keep it clean and to provide secondary air/over draught.
Solid Fuel.
To burn solid fuel efficiently the main source of combustion air should be under draught entering the ash pit
chamber. The air wash can be opened a little to allow sufficient air to keep the glass clean and provide secondary
air for afterburn.
Wood
Wood burns very efficiently on a bed of its own ash and an over draught. It will also burn successfully with an
under draught, and on appliances fitted with a thermostat this should be the main source of combustion air in
order for the thermostatic control to be effective.
Mixed Solid Fuel and Wood
When burning mixed fuels the grate should be set to the coal burning position with combustion air entering
equally from above the fire through the air wash, and below through the ash pit door.
Diagrams and notes on the features of the different types of fires are set out in the sections following this one.