Table of Contents
Advertisement
1.17 Flue exhaust to flue/chimney.
Flue exhaust does not necessarily have to be connected to a
branched type traditional flue. The flue exhaust can be connected
to a special LAS type multiple flue. Multiple and combined flues
must be specially designed according to the calculation method
and requirements of the standards, by professionally qualified
technical staff. Chimney or flue sections for connection of the
exhaust pipe must comply with requisites of technical standards
in force.
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
1.18 Ducting of flues or technical slots.
Ducting is an operation through which by the introduction of one
or more relevant pipes, a system is realised for the evacuation 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). Ducting requires the use of
ducts declared to be suitable for the purpose by the manufacturer.
Follow the installation and user instructions provided by the
manufacturer and the requirements set forth by standards.
1.19 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
135
136
57
58
101
106
59
58
6,4
7,2
2,4
2,8
100
100
180
30
Advertisement
Table of Contents
