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71
AST 14 C 255/00
CONFIGURATION 2:
suitable for boilers with integrated water heater (P3=3), where the "complex" solar plant to
be managed is designed for heating the solar storage in a forced circulation system
through the pump PS with the option of transferring the excess solar energy to a
secondary item through the deviating valve VM.
Plant diagram is shown below:
Water heater filling function (pump ON)
Boiler temperature is set with parameter P19, which corresponds to a value ranging
from 10 to 90°C (
default 60°C
).
Solar pump PS is enabled in the following conditions:
Tsbc < P19 - 2°C
and
Tscs – Tsbs >
∆
T ON (P20)
and
Tscs > Tmin pump collector ON (P23)
and
Tscs < Tmax pump collector ON (P22 - 5°C)
Where Tsbc is the temperature detected by the upper solar water heater probe,
Tsbs by the lower one, and Tscs is the temperature detected by the solar collector
probe.
