HOSSEVEN KH.2545, Instruction Manual

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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 th e fl ue
( 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 flue.
• Be built so as to prevent rain, snow or any foreign body entering the flue.
• Be easy to inspect, for any maintenance and cleaning operations.
The chimney pressure (DRAUGHT) must be at least 12 Pa Pascal (=1.2 mm of water column). The measurement must always be
carried out when the appliance is hot (nominal calorifc power). When the pressure exceeds 17 Pascal, it is necessary to reduce
it through the installation of an additional draught regulator (false air valve) on the exhaust pipe or in the chimney, according to the
regulations in force.
For correct appliance operation, it is essential that suffcient air for combustion is introduced into the place of installation.
CONNECTING A FIREPLACE OR OPEN HEARTH TO THE FLUE
The flue gas channel is the stretch of piping which connects the product to the flue. In the connection, these simple but extre mely
important principles must be respected:
• under no circumstances use a flue gas channel with a diameter less than that of the exhaust clamp with which the product is
equipped;
• each met er of the horizontal stretch of the flue gas channel causes a slight loss of head which must be compensated if necessary by
elevating the flue;
• the horizontal stretch must never exceed 2 met
ers.
• each bend of the flue gas channel slightly reduces the flue draught which must be compensated if necessary by elevating it suitably;
• Regulation requires that under no circumstances must there be more than 2 bends or variations in direction including the intake into
the flue. (Picture-17-18)
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ATTENTION: as far as concern the realisation of the flue connection and flammable materials please follow the
requirements provided by related 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 fxed openings on the flue itself, for the connection of
further different appliances (See chapter CONNECTING A FIREPLACE OR OPEN HEARTH TO THE FLUE)
!
ATTENTION: as far as concern the realisation of the flue connection and flammable materials please follow
the requirements provided by related 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.
!