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AST 14 C 255/00
P17=2 Solar plant reference
WATER HEATER FILLING
(P18=1)
Management of a forced-type solar plant pump (PS):
The function consists in controlling, on specific conditions, the solar pump through the
multifunction relay to heat a water heater. This is achieved by controlling two probes
located respectively on the solar collector (SCS) and at the bottom of the solar water
heater (SBS).
Water heater filling conditions (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:
Tsbs < 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 Tsbs is the temperature detected by the solar water heater probe and Tscs is the
temperature detected by the solar collector probe.
Electrical
connections:
PS
PS
21 22 23
