INSTRUCTIONS FOR THE INSTALLER
7
2.
2.3.5.1.
Rear flue socket
Figure 4A:
Secure the flue socket onto the rear of
the appliance using the screws and
washers supplied.
2.3.5.2.
Top flue socket
Figure 4B:
Secure the flue socket onto the rear of
the appliance using the screws and
washers supplied.
Figure No.4 -
Diagram for rear flue socket
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
appliances
(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
cowl or a smoke extraction fan, or reshape
the chimney.
Never make 90º bends, except the one
on stove outlet, due to the great loss of
draught they cause, and reduce 45º bends
down to an absolute minimum. Each 45º
bend is equivalent to a 0.5m reduction in
flue length. Horizontal flue sections should
not be installed because they cut
updraught a great deal.
If the flue draws at more than 20 Pa on
12Pa appliances, then an effective damper