Ariston UNO Installation Instructions Manual page 10

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 air intake cover;
2. Insert the adaptor into the opening (it is not necessary
to use a gasket or sillicone seal;
3. Insert the elbow into the air inlet and secure with the
screws supplied (Fig.2.7)
The components marked * in F
depending on the type of flue system used by the installer.
Ø 80 mm
F . 2.8
IG
123,5
F . 2.9
IG
* When running the twin flue pipes to the side from the
boiler, it is neccessary to reduce the height of the air
intake elbow by cutting 25mm from the bottom (F
2.8 are present or absent
IG
25
.2.9).
IG
F . 2.7
IG
123,5
60 mm
F . 2.10
IG
135
When fitting the twin pipe
system with a minimum
distance of 60mm to the
wall, it is necessar y to
create a hole 100mm in
diameter to allow the pipe
to be connected to the
elbow (F .2.10).
IG
10