STIEBEL ELTRON SOM 6 PLUS - Manual (Page 6)

6
S1
S2
S4 / TR
The controller calculates the temperature difference between
collector sensor S1 and tank sensor S2. If the difference is
larger than or identical to the adjusted switch - on temperature
difference (DT O), the solar pump will be operated by R1,
and the tank will be loaded until the switch-off temperature
difference (DT F) or the maximum tank temperature (S MX)
is reached.
R1 S3
1.4 Terminal allocation
Display Channels
Channel
Description Terminal Page
INIT x* ODB initialization active - 12
FLL x* ODB filling time active - 12
STAB x* ODB stabilization in progress - 12
COL x Temperature collector S1 12
TST x Temperature tank S2 12
S3 x Temperature sensor 3 S3 12
S4 x Temperature sensor 4 S4 12
TR x* Temperature return sensor S4 12
n % x Pump speed R1 R1 13
hP x Operating hours R1 R1 13
kWh x* Heat quantity kWh - 13
MWh x* Heat quantity MWh - 13
Sensors S3 and S4 can optionally be connected for
measurement purposes.
If energy metering (OHQM) is activated, sensor S4 has to be
connected as return sensor.
S1
S3
S2
S4/TR
R1
exemplary
Drainback system layout