Airwell WELLEA SPLIT A R3 Installationsanleitung Seite 23

7.2.2 Mode set control
Outdoor
1
Modbus
Code Assembly unit
1 Outdoor unit
2 Indoor unit
3 User interface
5 Balance tank (Field supply)
5.1 Automatic air purge valve
5.2 Drainage valve
6 P_o: Outside circulation pump (Field
supply)
7 SV2: 3-way valve (Field supply)
13 Expansion vessel (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(7) keeps
OFF, P_o(6) starts running;
2) When the system is in heating mode, which means one or more "HL" close and all "CL" open, SV2(7)
keeps ON, P_o(6) starts running.
Indoor
2
3
RT1
17 17
15
5.1
19
18
5
5.2
19
Code
15
17
18
19
23
24
FHL
1...n
RT 1
FCU
1...n
22
FCU1
13
FHL1
6
Assembly unit
Filter (Accessory)
Shut-off valve (Field supply)
Filling valve (Field supply)
Drainage valve (Field supply)
Collector/distributor (Field supply)
Bypass valve (Field supply)
Floor heating loop (Field supply)
Low voltage room thermostat (Field supply)
Fan coil unit (Field supply)
23
24
FCU2 FCUn
23
FHL2 FHLn