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• The air outlet must not be connected to chimney flues or combustion
gas ducts. The air outlet must under no circumstances be connected
toventilationductsforroomsinwhichfuel-burningappliancesare
installed.
• Itisadvisabletoapplyforauthorizationfromtherelevantcontrolling
authority when connecting the outlet to an unused chimney flue or
combustion gas duct.
The air outlet installation must comply with the regulations laid down
bytherelevantauthorities.
• When the unit is used in its extractor version, a sufficiently large
ventilationholemustbeprovided,withdimensionsthatare
approximately the same as the outlet hole.
• Nationalandregional building regulations imposeanumberof
restrictionsonusinghoodsandfuel-burningappliancesconnectedto
a chimney, such as coal or oil room-heaters and gas fires, in the
sameroom.
• Hoods can only be used safely with appliances connected to a
chimneyiftheroomand/orflat (air/environment combination) is
ventilatedfromoutsideusing a suitable ventilation hole approximately
500-600cm2 largeto avoid thepossibilityof a depression being
createdduring operation of the hood.
• Ifyouhaveanydoubts, contact the relevant controlling authority or
buildinginspector’soffice.
• Since the rule for rooms with fuel burning appliances is “outlet hole of
the same size as the ventilation hole”, a hole of 500-600 cm2, which
is to say a larger hole, could reduce the performance of the extractor
hood.
• If the hood is used in its filter version, it will operate simply and
safelyin the above conditionswithout the need for any of the
aforementionedmeasures.
• When the hood is used in its extractor function, the following rules
mustbefollowedtoobtain optimal operation:
— short and straight outlet hose
— keep bends in outlet hose to a minimum
— never install the hoses with an acute angle, they must
always follow a gentle curve only
— keep the hose as large as possible (preferably the same diameter
as the outlet hole).
• Failure to observe these basic instructions will drastically reduce the
performanceandincreasethenoiselevelsoftheextractorhood.