Johnson AURUM R32 M Serie Guide D'utilisation page 105

8.2.2 Mode set control
Outdoor
1
Code 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
15
14Shut-off valve
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
12 14 15
16
16
(Field supply )
16
Indoor
RT4
RT5
10
4.1
5
4
4.2
Code Assembly unit
16 Drainage valve (Field
19 Collector/distributor
20 Bypass valve (Field supply)
21
Thermostat transfer board (Field supply)
22 SV2: 3 - way valve (Field supply）
Low voltage room thermostat
RT8 High voltage room thermostat
FHL
Floor heating loop (Field
1... n
Fan coil unit (Field supply
FCU
1...n
19
20
FCU1 FCU2 FCUn
19
FHL1 FHL2 FHLn
supply)
supply)
)
V.1