Supply Of Combustion Air - Contura C i6 Installation Instruction

Supply of combustion air

For optimum function and heat exchange a supply air connection
(accessory) is recommended via a separate duct. The air can be
supplied indirectly via a vent in the outer wall, or directly through a
duct from outside.
The connector on the supply air connector has an outer diameter
Connection kit back
Used when there is sufficient space to the rear.
Requirements for the chimney
• The insert meets the requirements for connecting to chimneys
dimensioned for 350°C flue gas temperatures.
• The connection sleeve's outer diameter is 125 mm.
• The insert requires a draft in the chimney of at least –12
Pa. The draft is affected both by the length and area of
the chimney, and by how well sealed it is. The minimum
recommended chimney length is 3.5 m and suitable cross-
sectional area is 120-175 cm² (125-150 mm in diameter).
of Ø65 mm. When duct routing further than 1 m the pipe diameter
must be increased to 100 mm and a correspondingly larger wall
vent must be selected. The amount of air needed for combustion is
approx. 20 m3/h.
Connector downward
Used when there is insufficient space to the rear.
• A flue with sharp bends and horizontal routing reduces the
draught in the chimney. The maximum horizontal flue is 1 m,
on the condition that the vertical flue length is at least 5 m.
• It must be possible to sweep the full length of the flue and the
soot doors must be easily accessible.
• Carefully check that the chimney is sealed and that there is no
leakage around soot doors and flue connections.
GB
INSTAllATION 101