Connections; Chimney Connection; Components; Boiler-System Connection - Ravelli HR EVØ 250 SMART Bedienungs- Und Wartungshandbuch

EN
Rev.1 08/09/2021
Pag.28

CONNECTIONS

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The connections must be set up by a technician that is qualified and/or authorised by the Manufacturer.
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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.
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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