35
In order to ensure that the appliance functions correctly and efficiently, the flue connection between the boiler and the
flue terminal must be made using original components specifically designed for condensing boilers.
Traditional flue components cannot be used for conveying exhaust fumes from condensing boilers, nor vice versa.
It is recommended that:
- for the exhaust discharge duct, the entire length of the flue slopes upwards towards the exterior in order to facilitate the flow of
condensate back to the combustion chamber, which has been specifically designed to collect and drain the acidic condensate;
- for the air intake, the entire length of the duct slopes upwards towards the boiler to prevent the entry of rainwater, dust or foreign
bodies into the pipe;
- in the case where a horizontal coaxial system is installed, the coaxial terminal must be positioned horizontally in that the exhaust duct
has been specifically designed with the required slope (Ø 60) and the air intake (Ø 100) has been suitably protected against the
weather.
4.5.3
Ø 100/60 mm air/flue gas coaxial duct system
The below data are referred to air intake/flue gas discharge system, implemented with original, rigid and smooth ducts,
delivered by the manufacturer.
Type C13
KC 24 and KR 24
Minimum permissible length of horizontal coaxial pipes is 1 meter,
without accounting for the first elbow connected to the boiler.
Maximum permissible length of Ø 100/60 mm horizontal coaxial
pipes is 9.5 meter not including the first elbow connected to the
boiler.
For each additional 1 meter straight pipe maximum permissible
length is to be reduced by 1 meter.
For each additional 90° elbow, maximum permissible length is to
be reduced by 1 meter.
For each additional 45° elbow, maximum permissible length is to
be reduced by 0.5 meter.
The wall terminal reduces maximum permissible length by 1.5
meters.
The air intake duct is to be tilted by 1% toward its exit, in order to
avoid rain water to enter it.
KC 28 and KR 28
Minimum permissible length of horizontal coaxial pipes is 1 meter,
without accounting for the first elbow connected to the boiler.
Maximum permissible length of Ø 100/60 mm horizontal coaxial
pipes is 7.5 meter not including the first elbow connected to the
boiler.
For each additional 1 meter straight pipe maximum permissible
length is to be reduced by 1 meter.
For each additional 90° elbow, maximum permissible length is to
be reduced by 1 meter.
For each additional 45° elbow, maximum permissible length is to
be reduced by 0.5 meter.
The wall terminal reduces maximum permissible length by 1.5
meters.
The air intake duct is to be tilted by 1% toward its exit, in order to
avoid rain water to enter it.
KC 32 and KR 32
Minimum permissible length of horizontal coaxial pipes is 1 meter,
without accounting for the first elbow connected to the boiler.
Maximum permissible length of Ø 100/60 mm horizontal coaxial
pipes is 6.5 meter not including the first elbow connected to the
boiler.
For each additional 1 meter straight pipe maximum permissible
length is to be reduced by 1 meter.
For each additional 90° elbow, maximum permissible length is to
be reduced by 1 meter.
For each additional 45° elbow, maximum permissible length is to
be reduced by 0.5 meter.
The wall terminal reduces maximum permissible length by 1.5
meters.
The air intake duct is to be tilted by 1% toward its exit, in order to
avoid rain water to enter it.
Type C33
KC 24 and KR 24
Minimum permissible length of vertical coaxial pipes is 1 meter.
Maximum permissible length of Ø 100/60 mm vertical coaxial
pipes is 9.5 meters.
For each additional 1 meter of straight pipe maximum permissible
length is to be reduced by 1 meter.
For each additional 90° elbow, maximum permissible length is to
be reduced by 1 meter.
For each additional 45° elbow, maximum permissible length is to
be reduced by 0.5 meter.
The roof terminal reduces maximum permissible length by 1.5
meters.
KC 28 and KR 28
Minimum permissible length of vertical coaxial pipes is 1 meter.
Maximum permissible length of Ø 100/60 mm vertical coaxial
pipes is 7.5 meters.
For each additional 1 meter of straight pipe maximum permissible
length is to be reduced by 1 meter.
For each additional 90° elbow, maximum permissible length is to
be reduced by 1 meter.
For each additional 45° elbow, maximum permissible length is to
be reduced by 0.5 meter.
The roof terminal reduces maximum permissible length by 1.5
meters.
KC 32 and KR 32
Minimum permissible length of vertical coaxial pipes is 1 meter.
Maximum permissible length of Ø 100/60 mm vertical coaxial
pipes is 6.5 meters.
For each additional 1 meter of straight pipe maximum permissible
length is to be reduced by 1 meter.
For each additional 90° elbow, maximum permissible length is to
be reduced by 1 meter.
For each additional 45° elbow, maximum permissible length is to
be reduced by 0.5 meter.
The roof terminal reduces maximum permissible length by 1.5
meters.
Summary of Contents for Tahiti Condensing 24 kW Combi (KC)
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