Compit SOLARCOMP 951 Installation And Operating Instructions Manual page 26

Variant no. 8
Tank loaded from the solar panel – system with three sensors.
•
Solar tank loaded from an additional heat source based on temperature difference.
•
Circulation pump control.
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Tank loading
The loading of the tank is described on page 20.
Tank heating from the CH boiler
The set tank temperature, for which heating from the CH boiler is on, is determined in
parameter B.07 BOILER LOADED DHW SET TEMPERATURE.
Parameter B.08. BOILER BLOCKED WHEN PANEL ACTIVE makes it possible to
switch off tank heating if the solar pump is working.
Parameter D.12 MIN. BOILER TEMPERATURE FOR TANK LOADING determines the
minimum boiler temperature at which tank heating can be started. Hysteresis for the boiler
minimum temperature is 3K.
Tank heating from the CH boiler depends on the temperature difference between the
CH boiler and the tank T4-T3.
P2 pump is started when T4-T3 temperature difference exceeds 5K.
P2 pump is stopped when T4-T3 temperature difference drops to 1K.
Tank loading from the CH boiler is off in holiday mode.
Cooling with boiler
This function is activated in parameter B.09 COOLING WITH BOILER.
This function activates P2 pump if tank temperature (T3) exceeds the set temperature
by 5K and tank temperature (T4) is lower than tank temperature (T3). Tank cooling
continues until it reaches 3K below the set temperature.
DHW circulation
DHW circulation is described on page 19.
26
T1
P3
P1
S C 951 model u7.x, Rev. 1
OLAR OMP
T3
P2
T2
T4