Ariston A/23 MFFI Installation Instructions Manual page 12

Exhaust Type
C12 (xx)
Coaxial
System C32 (xx)
C42 (xx)
C12 (xy)
C32 (xy)
Twin Pipe
Systems C42 (xy)
C52 (xy)
12
Supplied By www.heating spares.co Tel. 0161 620 6677
Maximum Extension
Diameter of Pipes
Exhaust/Air
4 m ø 60 /100
4 m ø 60 /100
4 m ø 60 /100
23 kW 27 kW
54 m 46 m
54 m 46 m
54 m 46 m
17 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 build-
ing).
Use of a Restrictor
(mm) on the Discharge Side
L* < 0.5 m
L* < 0.5 m
L* < 0.5 m
ø 80
L < 7 m (23 kW) L < 5 m (27 kW)
ø 80
L < 7 m (23 kW) L < 5 m (27 kW)
ø 80
L < 7 m (23 kW) L < 5 m (27 kW)
ø 80
L < 7 m (23 kW) L < 5 m (27 kW)
Risk of Condensation Forming
L > 4 9 m (23 kW) L > 6.5 m (27 kW)
L > 4.9 m (23 kW) L > 6.5m (27 kW)
L > 4.9m (23 kW) L > 6.5m (27 kW)
L > 4.9m (23 kW) L > 5.3m (27 kW)
80 mm.
ø