Instructions for the installer
27
3.6
Air intake and flue gas venting system
Flue gas discharge into the atmosphere and air intake/flue gas venting systems must comply with applicable laws and standards in
the country of installation that are considered as fully transcribed herein.
DANGER
The boiler is equipped with a safety device for flue gas exhaustion check.
It is strictly forbidden to tamper with and/or prevent operation of such safety device.
Should an air/flue gas system malfunction occur, the device will shut-down the boiler by interrupting the gas supply to
the boiler and the LCD will display the E03 code.
In this case it is necessary to have safety device, boiler and the air intake/flue gas venting ducts promptly checked by a
service centre or a qualified service engineer.
In case of repeated stops, it is necessary to have safety device, boiler and the air intake/flue gas venting ducts checked
by a service centre or a qualified service engineer.
After each operation on the safety device or the air suction/flue gas exhaust system, it is necessary to perform a functio
-
nal test of the boiler.
In case it is necessary to replace the safety device use only original spare parts supplied by the Manufacturer.
On the open chamber model, the actual waiting time for the automatic reset of the combustion gas exhaust control device
is equal to 10 minutes. To reset the device before this time it is necessary to press "Reset".
On the sealed chamber model, to reset the combustion gas exhaust control device operation it is necessary to press
"Reset".
DANGER
Damage and/or injury caused by incorrect installation and/or incorrect use and/or unauthorized changes to the boiler
and/or non-observance of the manufacturer’s instructions and/or of the relative standards/laws in force in the country of
installation, shall release the manufacturer from any and all liability.
3.6.1 Natural draught boiler
Connecting to the exhaust chimney
The chimney is indispensable for correct boiler operation; it must therefore comply with the following requirements:
•
it must be made of waterproof material and be resistant to flue gas temperature and related condensate;
• it must have appropriate mechanical characteristics and low thermal conductivity;
• it must be perfectly sealed;
•
it must be as vertical as possible and the roof terminal is to have a cap ensuring efficient and constant flue gas exhaustion;
•
it must not be less wide than the boiler flue gas outlet diameter; squared or rectangular section chimneys must bear an internal
section, 10% larger than the section connected to the boiler draught excluder device;
• starting from the boiler, the duct connecting to the chimney is to follow a vertical direction and must be long not less than twice its
diameter before joining the chimney.
•
the connection pipe must be fixed to the boiler hood by means of a screw in the specific
A
hole (see
Fig. 9 Dimensions for connec-
tion to the flue gas system of the open chamber models).
