Ravelli HR EVO 200 SMART Use And Maintenance Manual page 151

EN
Rev.1 08/09/2021
Pag.34
Diagram 1 (boiler sensor)
Diagram 1 allows operating a heating system where there is also a boiler for DHW production. The boiler can be connected to other
heat production units, such as solar panels.
With this diagram, the appliance operates to bring the boiler to the set temperature; when the set water temperature is reached,
the three-way valve changes position and the appliance begins to exchange heat in the heating system. From now on, the boiler is
operated by an external thermostat or by the internal H2O set (as in diagram 0). The appliance reheats the boiler once the boiler water
temperature has fallen below the set-point value or when the flow switch (if connected) detects DHW being used.
If the appliance is in ECO STOP mode or in WATER STAND-BY mode, a request by the Boiler of flow meter is added to diagram 0
standard start-up conditions.
Stufa a Pellet
LEGEND
1- Pellet stove / boiler
2- Distribution manifolds
3- Radiators
4- Thermometer
5- Pressure gauge
6- Anti-condensation valve
The diagram shown here is indicative and may not display all the components required to properly operate the system. Rely on a
qualified thermal technician for the hydraulic system design.
Use and maintenance manual HR EVO Smart
7- Check valve
8- Group of direct distribution
9- Thermostatic distribution unit
10- Radiant panel (underfloor heating)
11- Shut-off valve
12- Thermostat
13- Expansion vessel (tank)
14- Pump station for solar thermal system
15- Solar thermal collector
16- Thermostatic mixing valve
17- Power separation system
18- Motorised three-way valve
19- Motorised three-way valve with spring return
20- Flow switch
21- DHW storage
22- Gas boiler