Manual La Nordica GEMMA FORNO 5.0 CERAMICA (page 27 of 92) (English, German, French, Italian, Spanish)

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Rev.04 aggiunto SIMBOLI Extraame.

Rev.05 : cambiato NOTA x dimensionam. canna fumaria - Robert 23.11.2017 ok!

ENGLISH

FLUE

ESSENTIAL REQUIREMENTS FOR CORRECT APPLIANCE OPERATION:

• the internal section must preferably be circular;

• the appliance must be thermally insulated and impermeable and built with suitable materials which are resistant to heat,

combustionproductsandanycondensation;

• there must be no narrowing and vertical passages with deviations must not be greater than 45°;

• if already used, it must be clean;

• all the sections of the ue gas duct must be accessible to inspection;

• inspection openings must be provided for cleaning.

• the technical data from the instruction manual must be respected;

IF THE FLUES ARE OF A SQUARE OR RECTANGULAR SECTION, THE INTERNAL EDGES MUST BE ROUNDED WITH A RADIUS OF NOT LESS THAN 20

MM. FOR THE RECTANGULAR SECTION, THE MAXIMUM RATIO BETWEEN THE SIDES MUST BE ≤ 1.5.

A section which is too small causes a reduction in draught. A minimum height of 4 m is advisable.

The following materials are FoRbiddEn and compromise the good operation of the appliance: asbestos cement, galvanised steel, rough and

porous internal surfaces. Picture1 shows some example solutions.



FORACORRECTINSTALLATIONPLEASERESPECTTHESECTIONS/LENGTHSOFTHEFLUESHOWNINTHETECHNICALDATA

TABLE.BYINSTALLATIONSWITHDIFFERENT DIMENSIONSTHEFLUEMUSTBE SUITABLYSIZED INACCORDANCEWITH

EN13384-1.

THE DRAUGHT CREATED BY YOUR FLUE MUST BE SUFFICIENT BUT NOT EXCESSIVE.

A section of the ue which is too large can present a volume which is too large to heat and therefore cause operating diculties for the

appliance; to avoid this, it is necessary to intubate the appliance for its entire height. A section which is too small causes a reduction in draught.

ATTENTION: AS FAR AS CONCERN THE REALISATION OF THE FLUE CONNECTION AND FLAMMABLE MATERIALS PLEASE FOLLOW

THE REQUIREMENTS PROVIDED BY UNI 10683 STANDARD. THEFLUEMUSTBEATASUITABLYDISTANCEFROMFLAMMABLE

ORCOMBUSTIBLEMATERIALUSINGSUITABLEINSULATIONORANAIRSPACE.

IT IS FoRbiddEn TO PASS SYSTEM PIPING OR AIR DUCTS INSIDE THE FLUE. IT IS ALSO FORBIDDEN TO CREATE MOVEABLE OR

FIXED OPENINGS ON THE FLUE ITSELF, FOR THE CONNECTION OF FURTHER DIFFERENT APPLIANCES (See Chapter CONNECTING

A FIREPLACE OR OPEN HEARTH TO THE FLUE).

CHIMNEYPOT

THEFLUEDRAUGHTDEPENDSONTHESUITABILITYOFTHECHIMNEYPOT.

IT IS THEREFORE ESSENTIAL THAT, IF BUILT IN A HANDCRAFTED WAY, THE EXIT SECTION IS MORE THAN TWICE THE INTERNAL SECTION

OF THE FLUE (Picture2) .

As it must always go past the ridge of the roof, the chimney pot must ensure exhaust even in the presence of wind (Picture3).

The chimney pot must meet the following requirements:

• Have an internal section equivalent to that of the chimney.

• Have a useful exit section of double the internal section of the ue.

• Be built so as to prevent rain, snow or any foreign body entering the ue.

• Be easy to inspect, for any maintenance and cleaning operations.

CONNECTIONTOTHECHIMNEY

Products with automatic door closing (type 1) must operate, for safety reasons, with the furnace door closed (except during the fuel loading

or ash removal phases).

Products with non-automatic door closing (type 2) must be connected to their own ue.

Operation with doors open is only allowed when supervised.

THE CONNECTION PIPE TO THE FLUE MUST BE AS SHORT AS POSSIBLE, STRAIGHT HORIzONTAL AND POSITIONED SLIGHTLY IN ASCENT,

AND WATERTIGHT.

CONNECTION MUST BE CARRIED OUT WITH STABLE AND ROBUST PIPES,COMPLY WITH ALL CURRENT STANDARDS AND REGULATIONS

AND TO THOSE ENVISIONED BY THE LAW, AND BE HERMETICALLY SECURED TO THE FLUE.

The internal diameter of the connection pipe must correspond to the external diameter of the appliance ue gas exhaust stub pipe (DIN 1298).

ATTENTION: AS FAR AS CONCERN THE REALISATION OF THE FLUE CONNECTION AND FLAMMABLE MATERIALS PLEASE FOLLOW

THE REQUIREMENTS PROVIDED BY UNI 10683 STANDARD. THE FLUE MUST BE PROPERLY SPACED FROM ANY FLAMMABLE

MATERIALS OR FUELS THROUGH A PROPER INSULATION OR AN AIR CAVITY. MINIMUMDISTANCESAFETY25CM.

Thechimneypressure(DRAUGHT)mustbeatleast - Pascal (see chap. TECHNICAL DATA SHEET).The measurement has always to be carried

out with hot device (rated thermal performance).

When the depression exceeds 17 Pa (=1.7 mm of column of water), it is necessary to reduce the same by installing an additional draught

regulator (buttery valve) on the exhaust pipe or in the chimney, according to the regulations in force.



FOR CORRECT APPLIANCE OPERATION, IT IS ESSENTIAL THAT SUFFICIENT AIR FOR COMBUSTION IS INTRODUCED INTO THE

PLACE OF INSTALLATION (see paragraph VENTILATION AND AERATION OF THE INSTALLATION PREMISES).

2727

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