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2.4.2. COMBI FLUE CONNECTION TYPES
Figure 28
Hermetic vertical split flue connection.
Figure 26
Hermetic concentric and vertical split
flue connection.
Figure 27
Vertical Type Hermetic Use with Split
Flue Set
Figure 30
Exhaust gas discharge through the
building chimney and fresh intake from the
building chimney with split flue sets
Figure 29
Building chimney connection with hermetic
split flue
Discharge with homocentric flue connection
Discharge to building chimney and fresh air intake with
split flue connection
For room sealed appliances of the type C8 boilers
a) overheat combustion products temperature; < 105 C°
b) G20 : CO
2
-content; 9.00 % ( tol%0,5 / -0,5%);
G30 / G31: CO
2
-content; 10.00 % ( tol%0,5 /
-0,5 %)
c) characteristics of the chimney to which the boiler may
be connected, according to fig 13.
d) condensate flow into the appliance is not allowed.
Exhaust gas discharge through the building chimney and
fresh intake from outside with split flue sets
For room sealed appliances of the type C6 boilers
overheat combustion products temperature for flue;
< 105 °C G20 : CO
2
content at nominal operating
conditions; 9.00 % (tolerance : +%0,5 / -0,5 % ) G30 /
G31 : CO
2
-content; 10.00 % (tolerance : +%0,5 / -0,5 %)
maximum allowable draught and maximum allowable
pressure difference between combustion air inlet and
flue gas outlet (including wind pressures); 120 Pa.
characteristics and the applications of the duct system
to which the boiler can be connected; condensate flow
into the appliance is not allowed. Maximum allowable
temperature of combustion air; 40 C° maximum allowable
recirculation rate of 10 % under wind conditions.
Attention:
The terminals for the supply of combustion air
and for the evacuation of combustion products shall not
be installed on opposite walls of the building.
Exhaust gas discharge through the building
chimney and fresh intake from outside with split
flue sets
Exhaust gas discharge and fresh air intake with
concentric flue kit and split flue kits
For room sealed appliances of the type C5 boilers
Attention:
The terminals for the supply of combustion
air and for the evacuation of combustion products
shall not be installed on opposite walls of the building.
Exhaust Gas Discharge Fresh Air Intake with Split
Flue Sets
The terminal outlets from separate combustion
and air supply circuits shall fit inside a square of 50
cm and that the distance between the planes of
the two orifices shall be less than 50 cm.
Air
Exhaust Gas
Figure 25
Hermetic (Concentric) and Flue (Split-Flue
type
C
13
C
53
C
53
C
33
B
23
C
C
83
