26
installation
For coaxial systems, the maximum ue lengths,
mentioned in the table on page 28 also take into
account an elbow.
For twin ue systems the maximum ue length,
mentioned in the table includes the exhaust gas/air
intake terminal.
Twin ue outlets should respect the following
instructions:
1- Use the same ø 80 mm ue 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
ue 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 horizon-
tal, the terminals must be on the same side of the
building.