5Operating Instructions ForThe Stratford Multifuel Sf & Si.1. INTRODUCTION - THE PRINCIPLE OF THE FIREYour Aarrow Fire is built to the highest standard of craftsmanship using the best materials and the most modernequipment available. It is a highly efficient and sophisticated piece of machinery and when properly installed andoperated it should provide a lifetime of heating satisfaction.Safety is the most important consideration when installing your fire. If not properly installed and operated ahouse fire may result. You should check your local Building Regulations and conform to all relevant fire safetystandards.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 isconstructed 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 completecombustion 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 aroundthe 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 orby the thermostatically controlled damper where fitted.The provision of two inlets gives a wide range of primary air/secondary air, under draught/over draughtcombinations. The optimum settings will only be established by experience in the firing the appliance, and willdepend 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 airin 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 pitchamber. The air wash can be opened a little to allow sufficient air to keep the glass clean and provide secondaryair for afterburn.WoodWood burns very efficiently on a bed of its own ash and an over draught. It will also burn successfully with anunder draught, and on appliances fitted with a thermostat this should be the main source of combustion air inorder for the thermostatic control to be effective.Mixed Solid Fuel and WoodWhen burning mixed fuels the grate should be set to the coal burning position with combustion air enteringequally 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.