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INSTALLATION
Layout 5: circuit with boiler connected to heating system and DHW tank via separator
Components NOT managed
directly by the boiler
UAC
5
4
6
1 10 9 1
EAF
1
1
Disconnector valve
2
Non-return valve
3
Anti-burn mixer valve
4
Expansion vessel
5
Safety valve
6
Discharge
7
Pressure gauge
8
Minimum pressure switch
9
Softener filter
10
Pressure reducer
11
Storage tank
12
Diverting valve
13
Boiler circulator
High-temperature system circulator (*managed
18
by boiler with specific accessory)
SE
Outdoor temperature sensor
MI
High-temperature system delivery
RI
High-temperature system return
EAF
Cold water inlet
UAC
DHW outlet
2.10 Removing the casing
To access the internal components, remove the casing as
explained below:
ƒ locate and loosen the 2 screws (A) fixing the casing to
the boiler, levering the fixing clips (C) and detaching
the lower part of the casing
ƒ raise the casing to release it from the upper tabs (B),
then remove it.
1
5
3
6
11
7
2
1
6
B
A
C
A
18*
MI
1
2
1
RI
1
9
The domestic hot water and central heating circuits
must be completed with expansion vessels of ade-
quate capacity and suitable, correctly-sized safety
valves. The discharge of the safety valves and ap-
pliances must be connected to a suitable collection
and disposal system (see the price list catalogue for
compatible accessories).
9
The selection and installation of the system com-
ponents is the responsibility of the installer, who
must respect the standards of good practice and
current legislation.
9
Special supply/make-up water must be conditioned
using suitable treatment systems.
a
It is forbidden to operate the boiler and circulators
without water.
9
On these types of models, the diverting valve (12)
can be installed in the boiler.
9
If the side panels are removed, refit them in their
initial position (referring to the label on the panel
itself).
9
If the front panel is damaged, it must be replaced.
9
The noise-absorbing panels in the front and side
walls ensure the airtight seal of the air supply duct
in relation to the place of installation.
9
It is therefore CRUCIAL to reposition the components
correctly to ensure the boiler seal.
2.11 Gas connections
The gas connection must be made respecting the instal-
lation regulations in force, and sized to ensure the cor-
rect gas delivery to the burner.
Before making the connection, check that:
9
The gas type is suitable for the appliance
9
If the appliance needs to be adapted for use with
another gasseous fuel, contact your local Aftersales
Service to have the necessary modifications made.
These operations must not be carried out by the in-
staller under any circumstances.
9
The piping is thoroughly clean
26
13
5
6
7
8
1
10 9 1
4
12
SE
EAF
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