Compit SOLARCOMP 951 Installation And Operating Instructions Manual page 27

Variant no. 9
Tank loaded from the solar panel – system with three sensors.
•
Central heating return support control.
•
Circulation pump control.
•
Tank loading
The loading of the tank is described on page 20.
CH support
CH support involves pre-heating of central heating return. This is done by means of
the switching valve.
Parameter D.13 MIN. TANK TEMPERATURE FOR BOILER SUPPORT protects the
DHW tank from excessive cooling. If tank temperature (T3) drops below the set value, CH
support is switched off. Hysteresis for parameter D.13 is 3K.
Return support depends on the temperature difference between the tank and CH
return (T3-T4).
CH support is switched on when T3-T4 difference is higher than 5K.
CH support is switched off when T3-T4 difference drops to 1K.
DHW circulation
DHW circulation is described on page 19.
S C 951 model u7.x, Rev. 1
OLAR OMP
T1
P3
P1
T4
Z
T3
T2
27