Ducting Of Flues Or Technical Slots; Configuration For C6 Flue Installation - Immergas EOLO STAR 24 4E Instructions And Warnings

1.14 DUCTING OF FLUES OR TECHNICAL SLOTS.

Ducting is an operation through which, via the introduction of
one or more relevant pipes, one achieves a system for the evacua-
tion of the combustion products of a gas appliance, made up from
the coupling of an existing or new ducting pipe with a chimney,
flue or technical slot (also in new buildings) (Fig. 26).
Ducting requires ducts declared to be suitable for the purpose by
the manufacturer, following the installation and user instruc-
tions, provided by the manufacturer and the requirements of the
regulations in force.
In any case, ducting operations must respect the provisions con-
tained in the standard and in current technical regulations;
The instructions in the project or technical report must likewise
be followed, in cases provided for by the standard and current
technical regulations.
To guarantee reliability and operation over time of the ducting
system, make sure:
- it is used in average atmospheric and environmental conditions,
according to current regulations (absence of combustion pro-
ducts, dusts or gases that can alter the normal thermophysical or
chemical conditions; existence of temperatures coming within
Gas type
Flue temperature at maximum output
Flue gas mass at maximum power
Flue temperature at minimum output
Flue gas mass at minimum power
CO at Q. max.
2
CO a Q. minimum
2
Maximum head available at the flue at maximum power
(maximum resistance value of the commercial flue system)
Maximum head available at the flue at minimum power
Maximum temperature achievable in the exhaust ducts
- Ducts must withstand condensation (only for con-
densing models);
- Air intake ducts must withstand working air tem-
peratures of up to 60°C;
- The maximum permissible percentage of flue gas
recirculation in windy conditions is 10%.
- Suction and exhaust pipes cannot be installed on opposing
walls;
- With flues in configuration C
flues is not permitted.
24
discharge into pressurised
6
the standard range of daily variation, etc.).
- Installation and maintenance must be performed according to
the indications supplied by the manufacturer included with the
"blue range" ducting system chosen and in compliance with the
regulations in force.
- The maximum length specified by the manufacturer must be
respected; in this regard:
• The max. possible length of the Ø 80 flexible ducting vertical
section is equal to 6.7 m. This length is obtained considering the
Ø 80 complete exhaust terminal, 1 m of Ø 80 pipe in exhaust,
two 90° Ø 80 bends at boiler outlet for connecting to the ducting
system and two direction changes of the flexible hose inside the
chimney/technical slot.
• The max. possible length of the Ø 80 flexible ducting vertical
section is equal to 27 m. This length is obtained considering the
complete Ø 80 exhaust terminal, 1 m of Ø 80 pipe in exhaust,
two 90° Ø 80 bends at boiler outlet.

1.15 CONFIGURATION FOR C6 FLUE INSTALLATION.

Appliance designed to be connected to a commercial exhaust/
intake system.
°C
kg/h
°C
kg/h
%
%
Pa
Pa
°C
G20 G31
128 133
53 54
108 110
55 57
6,9 7,8
3,2 3,5
89
89
180
C
52
26