Ariston GENUS 27 RFFI SYSTEM Manuel d'instructions d'installation - Page 13
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Fig. 2.11
Exhaust
Type
C12 (xx)
Coaxial
C32 (xx)
Systems
C42 (xx)
C12 (xy)
C32 (xy)
Twin Pipe
Systems
C42 (xy)
C52 (xy)
B004
In Fig. 2.11 below, several different types of flue systems are shown.
For additional information regarding the flue accessories, please consult the
Flue Pipe Accessories manual.
Diameter
Maximum Extension
Exhaust/Air
27 kW
30kW
3 m
4 m
3 m
4 m
3 m
4 m
50 m
46 m
46 m
50 m
50 m
46 m
15 m
17 m
(*) L = Length of Piping
In calculating the lengths of the pipes, the maximum length must also take into
consideration the values for the exhaust/air intake end terminals, as well as 90°
elbows for coaxial systems.
The C52 types must comply with the following requirements:
1. The discharge/intake vent pipes must have the same diameter of
2. If an elbow is inserted into the discharge/ventilation system, the calculation of
the overall extension must take into consideration the values for each curve, as
indicated in the table.
3. The exhaust pipe must extend at least 0.5 m above the ridge of the roof if it is
located on a side other than that for the air intake (this is not obligatory if the
exhaust and air intake pipes are located on the same side of the building).
Use of Restrictor on Discharge Side
42 mm
of Pipes
27 kW
(mm)
ø 60/100
L * < 0.5 m
ø 60/100
L * < 0.5 m
ø 60/100
L * < 0.5 m
ø 80
L < 5 m
ø 80
L < 5 m
ø 80
L < 5 m
ø 80
L < 5 m
Risk of
45 mm
Condensation Forming
30 kW
27 kW
L * < 0.5 m
L * < 0.5 m
L * < 0.5 m
L < 7.5 m
L > 6.5 m
L < 7.5 m
L > 6.5 m
L < 7.5 m
L > 6.5 m
L < 7.5 m
L < 5.3 m
023A
30 kW
L > 4.5 m
L > 4.5 m
L > 4.5 m
L > 4.5 m
80 mm.
ø
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