5. Typical Central Heating & Hot Water System Low Limit Low Limit Thermostat Gravity Flow 28mmHigh Limit Thermostat High Limit ThermostatGravity Flow 28mm Drain Cock Indirect Hot Water Cylinder Gravity Radiator Domestic Hot Water Draw Off Cold Water Tank Overflow Feed and Expansion Tank 22mm Open Vents Overflow Central Heating Flow Central Heating Return Drain Cock at Lowest Point Gravity Return 28mm Circulating PumpThermostat Using 4 Boiler Tappings Fig. 4. Typical Central Heating & Hot Water S

FUELS Wood Wood must be dry and well seasoned. Ideally it should be cut, split and stacked under cover for at least a year and preferably two years before being burnt. Hard woods, such as Ash, Beech and Oak are preferable to Soft woods such as Pine. The wood should be burnt in a bed of ash on the flat base of the stove. Burning wet unseasoned wood will result in heavy tar deposits in the chimney and reduced outputs. Peat Cut peat should be dried before burning to reduce tar deposits. Peat should