EN
Rev.1 08/09/2021
Pag.28
CONNECTIONS
The connections must be set up by a technician that is qualified and/or authorised by the Manufacturer.
By the installer the type of cable, with relative section, to be installed in case of replacement is: H05RR-F sez.3G0,75
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Chimney connection
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The chimney must be sized so as to guarantee the draught declared by the Manufacturer.
The boiler must be connected to a single flue. It is forbidden to connect the boiler to a flue shared with other combustion
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appliances or with hood exhausts.
The flue must be inspectable for cleaning.
Components
This boiler is equipped with the following control and safety components:
•
3 bar safety valve;
•
Booster pump control thermostat (integrated in the functions of the electronic board);
•
Acoustic alarm activation thermostat (integrated in the functions of the electronic board);
•
Temperature indicator (integrated in the functions of the electronic board, with display);
•
Pressure indicator (integrated in the functions of the electronic board, with display);
•
Acoustic alarm (integrated in the functions of the electronic board);
•
Automatic regulation thermal switch (integrated in the functions of the electronic board);
•
Automatic blocking thermal switch (manual reset thermostat);
•
Circulation system;
•
Expansion system (Expansion vessel).
Local laws and regulations (for example the UNI 10412-2 standard valid in Italy) could provide for other safety components. In this
case they must be mounted in the system.
The construction of a heating system with the relative installation of the boiler must comply with all national and local regulations in
force in the place where the system is carried out.
Boiler-system connection
Connect the boiler to the hydraulic system so as not to constrain it excessively and to allow it to move slightly.
Before connecting the boiler, it is strongly recommended that the system be thoroughly washed in order to eliminate residues
and deposits.
Use and maintenance manual HR EVO Smart
3/4" Flow
Ø15 Safety drain
3/4" Return
Boiler system air
venting valve
Delivery pipe with
connections
Pressure transducer
Pressure relief valve
Hight efficiency
circulating pump
Return pipe with
connection
Membrane expansion
tank