Airwell Wellea Split A R32 - Page 23

22
7.2.2 Mode set control
Code
Assembly unit
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)
15 Filter (Accessory)
FCU
1...n
Fan coil unit (Field supply)
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.
Space heating
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.
2
19
5
5.2
5.1
13
17
15
17
18
Modbus
Outdoor
19
Indoor
1
RT1
3
FCU1 FCUnFCU2
FHL1 FHL2 FHLn
23
23
24
6
7
M
FHL
1…n
Floor heating loop (Field supply)
RT 1
Low voltage room thermostat (Field supply)
17 Shut-off valve (Field supply)
18 Filling valve (Field supply)
19 Drainage valve (Field supply)
23 Collector/distributor (Field supply)
24 Bypass valve (Field supply)