EN
7-3-4 Roof vent with 2 45-degree bends
7-3-5 Roof vent with horizontal
IDA
7-3.6 Venting through an existing chimney
EN 12
One meter of vertical vent pipe is always required first.
Then a passagewith two 45-degreebends is permitted up
to the maximum length of 12 meters. The roof vent unit is
not
included
in this
calculation.
Note!All bends are to be included when calculating the
horizontal
length.
bend
First make a drawing. Calculatethe horizontal pipe length
and the total length of the supply pipe needed. One meter
of vertical vent pipe is always required first.
Note!All bends are added to the horizontal length.
For intake/exhaust through an existing chimney, the
following
conditions
must be satisfied.
The maximum total length is 12 meters.
1.
2. The minimum opening required is 15 x 15 cm.
3. The flue must be clean and airtight.
4. A bend is permitted, but you must add 2 meters to the
horizontal length for two 45-degree bends.
Use the correct accessories: roof vent unit, flat plate,
5.
chimney flashing set and mantle iron, if required
(see the order form).