en
20
Installation
Indications,
functions and options
Messages
Commissioning
Operation and function
System 12: Solar system with store loading in layers and thermostatic backup heating
The controller compares the temperature at sensor S1 to the temperatures at
sensors S2 and S3. If the measured temperature differences are higher than the
adjusted switch-on temperature differences, the pump (R1) will be activated and
the corresponding store zone will be loaded up to the adjusted store maximum
or set temperature respectively via the valve (R3). The priority logic effects prior
loading of the upper zone of the store.
Backup heating (R4) can be carried out with a thermostat function (S3). If the
value at S3 reaches the switch-on temperature for the backup heating, the relay
is switched on. If the value exceeds the switch-off temperature for the backup
heating, the relay is switched off again.
Sensors
S1
Temperature collector
1 / GND
S2
Temperature store
base
2 / GND
S3
Temperature store
return preheating /
Temperature backup
heating
3 / GND
S4
Free
4 / GND
S5
Free
5 / GND
Relay
R1
Solar pump
R1 / N / PE
R2
Free
R2 / N / PE
R3
Solar valve
R3 / N / PE
R4
Backup heating / Store
loading pump
R4 / N / PE
R4
R3
R1
S2
S3
S1
Durchflussrichtung
im stromlosen Zustand
Temp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PW
M
1
PW
M
2
N
R4
V40
VBus GN
D
L'
VFS
RPS
Flow direction when
normally open