33English RAIS - Manual for RAIS Poleo II, RAIS Epoca IIA single wall metal fluepipe is suitable for connecting the stove to the chimney but is notsuitable for using for the complete chimney. The chimney and connecting fluepipe musthave a minimum diameter of 125 mm. Any bend in the chimney or connecting fluepipeshould not exceed 45°. 90° bends should not be used.Combustible material should not be located where the heat dissipating through the wallsof fireplaces or flues could ignite it. Therefore when installing the stove in the presenceof combustible materials due account must be taken of the guidance on the separationof combustible material given in Building Regulations Approved Document J and also inthese stove instructions.If it is found that there is excessive draught in the chimney then either an adjustable fluedamper or alternatively a draught stabiliser should be fitted. The adjustable flue dampershould not close off the flue entirely but should in its closed position leave a minimumcontinuous opening free area of at least 20 % of the total cross sectional area of the flueor fluepipe.Adequate provision e.g. easily accessible soot door or doors must be provided for sweep-ing the chimney and connecting fluepipe.You should also familiarise yourself with the draught conditions for chimneys with 2 flues.The flue outlet spigot is either 150 mm (6”) in diameter, or 129 mm (5”) in diameter.For strong draughts, the chimney or flue should be fitted with a draught stabiliser. Inwhich case, it is important to ensure that there is a free flow-through area of minimum20 cm² when the regulating gate is shut. Otherwise, the fuel energy may not be usedoptimally. If, at any time, you are unsure about the condition of the chimney, you shouldcontact a chimney sweep.Remember that access to the access door should be kept clear.