Ariston microSYSTEM 15 RFFI Installation Instructions Manual - Page 10
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In addition, it is also possible to use a split (twin pipe) system by
fitting a special adaptor to the flue connector and using the
aperture for the air vent intake located on the top part of the
combustion chamber.
To utilise the air intake it is necessary to:
1. Remove the bottom of the air intake by cutting it with a suitable
knife (see F
. 2.7);
IG
2. Insert the elbow into the air intake until it reaches the lower
end. (There is no need to use gaskets or sealing compounds).
F
. 2.9
IG
Exhaust
Type
15 RFFI
C12 (xx)
Coaxial
Systems
C32 (xx)
C42 (xx)
ø 60/100
Exhaust
Type
15 RFFI
Twin Pipe
C12 (xy)
Systems
C32 (xy)
ø 80/80
C42 (xy)
T
P
WIN
IPE
S
YSTEMS
Ø 80 mm
Maximum
Restrictor
Extension
ø 41 mm
Exhaust/Air
L min = 0.5 m
L = 5 m
L max = 1 m
Restrictor
Maximum
Extension
ø 41 mm
Exhaust/Air
L max = 30 m
78 m
F
. 2.8
IG
Risk of Condensation Forming
Piping not insulated
ø 41
restrictor
NO restrictor
NONE
NONE
Risk of Condensation Forming
Piping not insulated
ø 41
NO
restrictor
restrictor
1.2 m
2.5 m
F
. 2.10
IG
In calculating the lengths of the pipes, the
maximum length "L" must also take into
consideration the values for the exhaust/air
intake end terminals, as well as 90° elbows for
coaxial systems.
10
Piping insulated
ø 41
restrictor
NO restrictor
NONE
NONE
Piping insulated
ø 41
NO
restrictor
restrictor
8 m
11.0 m
L = Sum of the total length of exhaust + air
intake piping.
T
2.1
ABLE