installation 120 180 195 105 Fig. 9 For coaxial systems, the maximum flue lengths, mentioned in the table on page 28 also take into account an elbow. For twin flue systems the maximum flue length, mentioned in the table includes the exhaust gas/air intake terminal. Twin flue outlets should respect the following instructions: 1- Use the same ø 80 mm flue pipes for the air intakes and exhaust gas ducts. 2- If you need to insert elbows in the air intake and exhaust gas ducts, you should consider for each one the equivalent length to be included in the flue length calculation. 3- The exhaust terminal should jut above the roof by at least 0.5 m. 4- The intake and exhaust gas ducts in Type C13 + C53 must be installed on the same wall, or where the exhaust is vertical and the air intake horizontal, the terminals must be on the same side of the building. Fig. 10 26
installation Table of flue gas exhaust duct lengths COAXIAL SYSTEM FLUE TYPE MAX DIAMETER LENGTH of PIPE Equivalent length 45° 90° C13 12 16 m 48 m 60/100 80/125 Flue gas exhaust and air suction duct through external wall in the same range of pressure 18 24 14 m 42 m 12 m 36 m 60/100 80/125 60/100 80/125 C 33 12 16 m 56 m 60/100 80/125 Flue gas exhaust and air suction duct from outside with roof terminal in the same range of pressure 18 24 10 m 49 m 12 m 42 m 60/100 80/125 60/100 80/125 0.5 m 1 m C43 Individual or shared flue gas exhaust and air suction through flue ducting built into the building Note: A specialist flue system is required 12 18 24 16 m 0 m 14 m 0 m 12 m 0 m 60/100 80/125 60/100 80/125 60/100 80/125 27
installation 120 180 195 105 Fig. 9 For coaxial systems, the maximum flue lengths, mentioned in the table on page 28 also take into account an elbow. For twin flue systems the maximum flue length, mentioned in the table includes the exhaust gas/air intake terminal. Twin flue outlets should respect the following instructions: 1- Use the same ø 80 mm flue pipes for the air intakes and exhaust gas ducts. 2- If you need to insert elbows in the air intake and exhaust gas ducts, you should consider for each one the equivalent length to be included in the flue length calculation. 3- The exhaust terminal should jut above the roof by at least 0.5 m. 4- The intake and exhaust gas ducts in Type C13 + C53 must be installed on the same wall, or where the exhaust is vertical and the air intake horizontal, the terminals must be on the same side of the building. Fig. 10 26
installation Table of flue gas exhaust duct lengths COAXIAL SYSTEM FLUE TYPE MAX DIAMETER LENGTH of PIPE Equivalent length 45° 90° C13 12 16 m 48 m 60/100 80/125 Flue gas exhaust and air suction duct through external wall in the same range of pressure 18 24 14 m 42 m 12 m 36 m 60/100 80/125 60/100 80/125 C 33 12 16 m 56 m 60/100 80/125 Flue gas exhaust and air suction duct from outside with roof terminal in the same range of pressure 18 24 10 m 49 m 12 m 42 m 60/100 80/125 60/100 80/125 0.5 m 1 m C43 Individual or shared flue gas exhaust and air suction through flue ducting built into the building Note: A specialist flue system is required 12 18 24 16 m 0 m 14 m 0 m 12 m 0 m 60/100 80/125 60/100 80/125 60/100 80/125 27
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