Chimney Flue; Type Of Flue - Lacunza Tarbes Instruction Book

This is the best option because it means
that draughts are not created in and
oxygen is not consumed from the room in
which the appliance is fitted. A further
advantage is that there is no danger of
downdraught which may hinder the correct
updraught of the appliance when an
extractor or mechanical
appliance is used in the same room as the
central-heating appliance or in another one
alongside it.
Figure No.8 - Air conduction for the
combustion chamber
If this is not possible, ensure that the
appliance receives air for combustion.
Outside air connection via the wall
1. Make an opening in the wall (see
the measurements of the appliance
on the section 1.1 to see the exact
position of the hole).
2. Close the
hermetically to the wall.
INSTRUCTIONS FOR THE INSTALLER
ventilation
air connection

2.4. Chimney flue

The chimney flue must comply with
present standards on the installation of
chimneys.
In rooms equipped with Controlled
Mechanical Ventilation, the ventilation
outlet must never be connected to the
flue.
The appliance must always have its own
chimney flue, never sharing a chimney flue
with another appliance.

2.4.1. Type of flue

The flue must be made of special
material designed to resist the products of
combustion (e.g. stainless steel, enamelled
steel, etc.).
Non-central-heating
(without back boiler) require an insulated,
double-sleeve flue only on those sections
that run outdoors or through cold areas.
Single piping can be used inside the
building, the heat of the gases serving to
heat rooms, insulating only those sections
where excess temperature may cause
damage.
If the chimney is constructed, then it is
necessary to pipe and insulate it to ensure
correct updraught.
The diameter of the pipe must be the
same as the diameter of the flue socket on
the appliance over its entire length in order
to ensure correct operation.
The flue must prevent the entry of
rainwater.
The flue must be clean and airtight over
its entire length.
The flue must be at least 6m tall and the
chimney cap must not hinder the free
release of gases.
If the flue tends to suffer from
downdraught, then it is necessary to fit an
effective anti-downdraught cowl, a static
9
2.
appliances