Airwell WELLEA SPLIT A R3 Installationsanleitung Seite 24

7.2.3 Double zone 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: zone 1 circulation pump (Field supply)
8 Mixing station (Field supply)
8.1 SV3: Mixing valve (Field supply)
8.2 P_c: zone 2 circulat ion pump
Space heating
Zone1 can operate in cooling mode or heating mode, while zone2 can only operate in heating mode; While
installation, for thermostat in zone1, only "H、L" terminals need to be connected. For thermostat in zone2, only
"C、L" terminals need to be connected.
1) The ON/OFF of zone1 is controlled by the room thermostat in zone1. When "HL" of thermostat in zone1 close,
zone1 turns ON. When "HL" turn OFF, zone1 turns OFF; Target temperature and operation mode are set on the
user interface;
2) In heating mode, the ON/OFF of zone2 is controlled by the room thermostat in zone2. When "CL" of thermostat
in zone2 close, zone2 turns ON. When "CL" open, zone2 turns OFF. Target temperature is set on the user
interface; Zone 2 can only operate in heating mode. When cooling mode is set on the user interface, zone2 keeps
in OFF status.
The circulation pump operation
When zone 1 is ON, P_o(6) starts running; When zone 1 is OFF, P_o(6) stops running;
When zone 2 is ON, SV3(8.1) is ON, P_c(8.2) starts running; When zone 2 is OFF, SV3(8.1) is OFF, P_c(8.2)
stops running .
Indoor
2
3
RT2
RT1
17 17
15
5.1
19
18
5
5.2
19
Code
15
17
18
19
23
RT 1-2
Tw2
13
RAD.
1...n
FHL
1...n
23
13
6
8
Tw2
8.1 8.2
FHL1
Assembly unit
Filter (Accessory)
Shut-off valve (Field supply)
Filling valve (Field supply)
Drainage valve (Field supply)
Collector/distributor (Field supply)
Low voltage room thermostat (Field supply)
Zone 2 water flow temperature sensor
(Optional)
Expansion vessel (Field supply)
Radiator (Field supply)
Floor heating loop (Field supply)
RAD.1
ZONE1
RAD.2
RAD.n
23
ZONE2
FHL2 FHLn