Compit SOLARCOMP 951 Installation And Operating Instructions Manual page 29

Variant no. 11
Two tanks loaded from two solar panels.
•
Tank loading
The loading of tanks can take place at the times set in parameter C.02 PANEL
ACTIVE. Outside those hours the pumps' operation is blocked.
First tank 1 is loaded. Loading of tank 2 can be started only after tank 1 has been
heated up to the set temperature. The set temperature of tank 1 is determined in
parameter B.01 DHW TANK SET TEMPERATURE. Set temperature of tank 2 is
determined in parameter B.02 DHW TANK 2 SET TEMPERATURE. Hysteresis of the set
temperature for both tanks is 2K.
Tank 1 loading from solar panel 1 takes place as a function of T1-T2 temperature
difference.
Tank 1 loading from solar panel 2 takes place as a function of T4-T2 temperature
difference.
Tank 2 loading from solar panel 1 takes place as a function of T1-T3 temperature
difference.
Tank 2 loading from solar panel 2 takes place as a function of T4-T3 temperature
difference.
Parameter
temperature difference between the solar panel and the tank for activating the solar pump.
Parameter
temperature difference between the solar panel and the tank for stopping the solar pump.
During tank loading the controller can modulate the speed of P1 pump for optimum
use of solar energy. Minimum speed of P1 pump is set in parameter D.01.P1 PUMP
MINIMUM SPEED. When 100% is selected, operation without speed modulation is
provided.
P3 pump's speed is not modulated.
S C 951 model u7.x, Rev. 1
OLAR OMP
D.02 PANEL-TANK DELTA FOR P1 PUMP ON
D.03 PANEL-TANK DELTA FOR P1 PUMP OFF
I II
T1 T4
P1 P3
Z
I II
T2 T3
determines the
determines the
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