Publicité
Les langues disponibles
Les langues disponibles
Arrangement 5: Solar system with 2 stores and valve logic
The controller calculates the temperature difference between collector sensor S1
and store sensors S2 and S3. If the difference is larger than or identical to the
corresponding adjusted switch-on temperature differences (DT1O / DT2O), the
solar pump will be activated by relay 1, and the corresponding store will be loaded
until the switch-off temperature difference (DT1F / DT2F) or the maximum store
PWM 1/2
VFD
S1
Store 1
R1
S4 / VFD / TR
VBus
9 10
S4 / VFD / TFL
R2
Store 2
S2
temperature (S1MX / S2MX) is reached. The priority logic causes priority loading of
store 1. If store 2 is being loaded, relay 2 switches the 3-port valve.
If heat quantity measurement (OHQM) is activated, S4 and VFD are used as the flow
and return sensors respectively.
S3
27
Publicité
