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Figure 31
Exhaust gas discharge through the building chimney and fresh intake from the building chimney with split
flue sets
Attention:
The minimum usable
diameter must not be under 80 mm
or equivalent for the vertical duct
supplying the combustion air.
Attention:
a) nominal working combustion product temperature : > 70°C max
conditions
b) overheat combustion products temperature : 105° C
c) the minimum length of the specified connecting ducts; 1 mt / maximum
length of the specified connecting ducts; 10 mt
d) For size/shape of the end of the fitting please refer 2.2.14. Installation with
Vertical Flue Sets page 13, Fig.26.
e) Please re adjust TsP Paramater P22 = Flues gas pipe length ( value 1 = 1
meter ) according to actual flue lenght
f) Its MUST to use NON RETURN valve ON the flue gas system.
g) non-return valve function has to be checked annually by authorised
service.
Information for the design of the common duct system for a
type C(10) boiler
a) The boiler is designed to become connected to a common duct system
that is designed to operate where the static pressure in the common flue
duct might exceed the static pressure in the common air duct by 25 Pa
under the condition that n-1 boilers are running at maximum nominal heat
input (Qn,max) and 1 boiler at the minimum heat input allowed by the
controls
b) combustion product mass flow rate at maximum nominal heat input are
given technical table.
c) combustion product mass flow rate at minimum heat input allowed by the
controls are given technical table.
d) G20 : CO2 or O2 content of the combustion products at nominal operating
conditions 9 % ( +0,5/-0,5 )
G30 / G31 : CO2-content; 10.00 % ( tolerance : +%0,5 / -0,5 % )
e) minimum allowable pressure difference between combustion product
outlet and air inlet shall be declared as -200 Pa (including -100 Pa wind
pressure).
General for connection of a type C(10) boiler to a common duct
system
Characteristics and the applications of the common duct system to which
the boiler can be connected, with at least the following information:
a) the flue duct system shall be CE marked and comply with EN 15502
standart 12.2.1.4.111.2;
b) nominal combustion products temperature for dimensioning the common
duct system shall be declared as 25 °C;
c) the combustion product mass flow rate at maximum heat input shall be
specified for every connection point; the terminal of the common duct
shall be designed to induce a draft;
d) condensate flow into the boiler is allowed;
e) maximum allowable recirculation rate of 10 % under wind conditions;
f) the maximum allowable pressure difference between combustion
product inlet and air outlet of the common duct system shall not be
exceeded when n-1 boilers are running at maximum nominal heat input
(Qn,max) and 1 boiler at the minimum heat input allowed by the controls;
g) the common flue duct shall be appropriate for an overpressure of at least
200 Pa;
h) the duct system shall not include a draft diverter.
Warning:
the boiler if it is installed as a C (10) boiler and IF / when the
boiler is disconnected the air outlet and the combustion product inlet
openings shall be closed and checked on tightness.
C
C
10
