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INSTALLATION
2.9
Schematic hydraulic systems
Layout 1: circuit with boiler directly connected to heating system (check that the pump discharge head is suffi-
cient to ensure adequate circulation)
Components NOT managed
directly by the boiler
Layout 2: circuit with boiler directly connected to heating system and DHW tank (check that the pump discharge
head is sufficient to ensure adequate circulation)
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
SE
Outdoor temperature sensor
MI
High-temperature system delivery
RI
High-temperature system return
EAF
Cold water inlet
UAC
DHW outlet
MI
2
1
RI
1
5
3
6
11
7
2
1
6
SE
13
5
6
7
8
4
1
10 9 1
1
12
1
2
MI
RI
1
9
The DHW and heating circuits must be completed
with expansion vessels of adequate capacity and
correctly-sized safety valves. The discharge of the
safety valves and appliances 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.
24
EAF
SE
13
5
6
7
8
1
10 9 1
4
EAF
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