Ferroli OMNIA M 3.2 Installation And Owner's Manual page 115

8.2.2 Mode set control
Outdoor
1
Coding Assembly unit
1 Main unit
2 User interface
Balance tank (Field supply )
4
4.1 Automatic air purge valve
4.2 Drainage valve
5 P_o: Outside circulation pump (Field supply) RT
Expansion vessel (Field supply )
10
12 Filter (Accessory)
14 Shut-off valve (Field supply )
Space heating
Cooling or heating mode is set via the room thermostat, water temperature is set on the user interface.
1) When any "CL" of all the thermostats close, system will be set at cooling mode.
2) When any "HL" of all the thermostats close and all "CL" open, system will be set at heating mode.
The circulation pumps operation
1) When the system is in cooling mode, which means any "CL" of all the thermostats closes, SV2 keeps
OFF, P_o starts running.
2) When the system is in heating mode, which means one or more "HL" close and all "CL" open, SV2
keeps ON, P_o starts running.
2
RT2 RT3
21
RT7
RT6
RT8
RT1
14
17
15
14
12
16
16
Coding
16
19
20
21
22
RT8
FHL
1... n
FCU
1...n
16
Indoor
RT4
RT5
10
4.1
5
4
4.2
Assembly unit
Drainage valve (Field supply)
Collector/distributor
Bypass valve (Field supply)
Thermostat transfer board (Field supply)
SV2: 3 - way valve (Field supply
Low voltage room thermostat
High voltage room thermostat
Floor heating loop (Field supply)
Fan coil unit (Field supply )
19
20
FCU1 FCU2 FCUn
19
FHL1 FHL2 FHLn