EAS ELECTRIC EMCH Serie Manual De Instrucciones página 75

8.2.3 Double zone control
Outdoor
1
1
Modbus
14
12 14 16
Code A ssembly unit
Main unit
1
2 User interf ace
Buffer tank (Field supply)
4
Automatic air purge valve
4.1
4.2 Drainage valve
P_o: zone 1 circulation pump (Field supply)
5
10
Expansion vessel (Field supply)
12 Filter (Accessory)
Shut-off valve (Field supply)
14
Filling valve (Field supply )
15
Zone1 can operate in cooling mode or heating mode, while zone2 can only operate in heating mode;
Operation mode and water temperature are set on the user interface, the unit ON/OFF is controlled by the
room thermostat. While installing the system, only "H L" terminals need to be connected for the
thermostat in zone1, only "C L" terminals need to be connected for the thermostat in zone2.
1) When "HL" keeps closing for 15s, zone1 turns ON. When "HL" keeps opening for 15s, zone1 turns OFF.
2) When "CL" keeps closing for 15s, zone2 turns ON. When "CL" keeps opening for 15s, zone2 turns OFF.
The circulation pump and valve operation
When zone 1 is ON, P_o starts running; When zone 1 is OFF, P_o stops running;
When zone 2 is ON, SV3 switches between ON and OFF according to the set TW2, P_C keeps ON; When
zone 2 is OFF, SV3 is OFF, P_c stops running.
The floor heating loops require a lower water temperature in heating mode compared to radiators or
fancoil unit. To achieve these two set points, a mixing station is used to adapt the water temperature
according to requirements of the floor heating loops. The radiators are directly connected to the unit water
circuit and the floor heating loops are after the mixing station. The mixing station is controlled by the unit.
1) Make sure to install the 3-way valve SV2/SV3 correctly. Please refer to 9.6.6 "Connection for
other components".
2) Make sure the wirings of the room thermostat is correct. Please refer to 9.6.6 "Connection
for other components".
Indoor
2
RT
10
4.1
4
4.2
15
16
Code
16
19
23
23.1
23.2
RT
Tw 2
FHL 1...n Floor heating loop (Field supply)
RAD. 1...n Radiator (Field supply)
14
5
23
19
Tw2
23.123.2
FHL1 FHL2
A ssembly unit
Drainage valve (Fie ld sup ply )
Collector/distributor (Field supply )
Mixing station (Field supply)
SV3: Mixing valve (Field supply)
P_c: zone 2 circulation pump (Field supply)
Low voltage room thermostat (Field supply)
Zone 2 water flow temperature
sensor (Optional)
RAD.1
ZONE1
RAD.2
RAD.n
ZONE2
FHLn
V.1