en
33
Installation
Indications,
functions and options
Messages
Commissioning
Operation and function
Arrangement 25: Solar system with east-/west collectors, store loading in layers and thermostatic backup heating
The controller compares the temperatures at the collector sensors S1 and S5 to
the store temperature at sensors S2 and S3. If one of the measured temperature
differences is higher than the adjusted switch-on temperature differences, the cor-
responding pump (R1, R2) or both pumps will be activated and the corresponding
store zone will be loaded up to the adjusted store maximum via the valve (R3). The
priority logic effects prior loading of the upper zone of the store.
DHW backup heating (R4) can be carried out with a thermostat function (S3).
Sensors
S1
Temperature collector 1 1 / GND
S2
Temperature store base
2 / GND
S3
Temperature store top
3 / GND
S4
Free
4 / GND
S5
Temperature collector 2 5 / GND
Relay
R1
Solar pump collector 1
R1 / N / PE
R2
Solar pump collector 2
R2 / N / PE
R3
Solar valve
R3 / N / PE
R4
Backup heating / Store
loading pump
R4 /R4
R4
R3
R2
R1
S5
S2
S1
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
S3
Durchflussrichtung
im stromlosen Zustand
Flow direction when
normally open