Palazzetti Inserimento A70 Installation, User And Maintenance Manual page 31

5.4 FLUE GAS EXHAUST
The stove operates with negative pressure in the
combustion chamber, and consequently the flue
gas discharge must be airtight.
The stove must be connected to its own separate
flue gas exhaust system capable of ensuring
adequate atmospheric dispersion of the combustion
byproducts.
The components making up the flue gas exhaust
system must be suitable for the specific operating
conditions and bear the CE mark.
The flues should be suitably insulated (e.g. using
rock wool) or made using double wall steel pipes,
for all the chimney section inside the hood.
An initial vertical section measuring a minimum of
1.5 metres is required to ensure correct flue gas
exhaust.
There should be at least three changes in direction
along the flue, in addition to the flue connection
at the rear of the stove, using 45 or 90° angle
connectors or 'T' connectors.
Use always a 'T' connector with inspection cap on
all horizontal or vertical changes in flue direction.
The maximum length of horizontal sections is 2-3
m with an upwards slope of 3-5% (Fig. 5.4.1).
Anchor the flues to the wall using special collars.
The flue gas exhaust attachment MUST NOT BE
connected to:
- a chimney used by other heat generators
(boilers, stoves, fireplaces, etc.....);
- air exhaust systems (range hoods, vents,
etc.....) even if these are ducted.
Shut-off or draught valves must not be used.
Combustion byproducts must be discharged
through the roof.
If the flue is longer than 5 metres and there is
insufficient draught (many changes in direction,
unsuitable discharge terminal, etc.) flue gas
exhaust may be less than optimum. In these cases,
the operating parameters will need to be modified
(flue gas exhaust and pellet load) to adapt the stove
to the actual characteristics of the flue. Contact
technical service for this procedure.
"Ermetica" series stoves
For "Ermetica" series pellet stoves a special coaxial
pipe can be used to both discharge the flue gas and
duct the combustion air from the outside (Fig. 5.5
A, B=Air intake C, D=Flue gas outlet).
INSTALLATION
00 4776070 - 17/12/2018 - PN - Italy
Fig. 5.4.1
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