en
28
Installation Indications, functions and options MessagesCommissioningOperation and function
System 20: Solar system with east-/west collectors, return preheating and backup heating
The controller compares the temperatures at the collector sensors S1 and S5 to
the store temperature at sensor S2. If one of the measured temperature difference
is higher than the adusted switch-on temperature difference, the corresponding
pump (R1 and/or R2) will be switched on, thus loading the store until either the
switch-off temperature difference or the store maximum temperature is reached.
With another temperature differential function (S3 heat source / S4 heat sink) re-
turn preheating (heating circuit backup) is possible via another valve (R3).
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 1 / GND
S2 Temperature store base 2 / GND
S3 Temperature store top /
Temperature store
return preheating
3 / GND
S4 Temperature heating
return
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 Return preheating R3 / N / PE
R4 Backup heating / Store
loading pump
R4 / N / PE
R3
R4
R2R1
S5
S4
S2
S1
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus
GND
L'
VFS
RPS
S3
To Next Page
Loading...
Need help?
General
