Riello NXHM - Typical Applications

75
ENGLISH
8 TYPICAL APPLICATIONS
The application examples given below are for illustration only.
8.1 Application 1
Space heating with a room thermostat connected to the unit
8.1
8.2
2
3
67
8
FHL1
----
FHL2 ---- FHLn
9
T
10
11
4
5
1
1.5
1.4
1.2
1.3
1.7
1.6
1.1
Code Assembly unit
1 Outdoor unit
1.1 Manometer
1.2 Pressure relief valve
1.3 Expansion vessel
1.4 Plate heat exchanger
1.5 Air purge valve
1.6 Flow switch
1.7 PUMP_I: Circulation pump inside the unit
2 <VKDSH¿OWHU
3 6WRSYDOYH¿HOGVXSSO\
4 Wired controller
5 5RRPWKHUPRVWDW¿HOGVXSSO\
6 'UDLQYDOYH¿HOGVXSSO\
7 )LOOYDOYH¿HOGVXSSO\
8 %DODQFHWDQN¿HOGVXSSO\
8.1 Air purge valve
8.2 Drain valve
9 ([SDQVLRQYHVVHO¿HOGVXSSO\
10 PUMP_ORXWVLGHFLUFXODWLRQSXPS¿HOGVXSSO\
11 &ROOHFWRUGLVWULEXWRU¿HOGVXSSO\
FHL
1… n
)ORRUKHDWLQJORRS¿HOGVXSSO\
NOTE
The volume of balance tank (8) should be greater than 40l. The drain valve (6) should be installed at the lowest positon of the system. PUMP_O
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For outside circulation pump PUMP_O).
Unit operation and space heating
When a room thermostat is connected to the unit and when there is a heating request from the room thermostat, the unit will start operating to
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ting mode, the unit will stop operating. The circulation pump (1.7) and (10) will also stop running. The room thermostat is used as a switch here.
NOTE
Make sure to connect the thermostat wires to the correct terminals, method B should be selected (see "For room thermostat" in 9.7.6 Connection
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