Som 9s – STIEBEL ELTRON SOM 9s User Manual
Page 21
© Stiebel 11091_SOM_9s.mon
us.ind
d
21 |
SOM 9s
System 7
Solar system with east-/west collectors
The controller compares the temperatures at the collector
sensors S1 and S5 to the tank temperature at sensor S2.
If one of the measured temperature differences is higher
than the adjusted switch-on temperature differences, the
corresponding pump (R1, R2) will be activated and the tank
will be loaded.
Sensor/Ter-
minal
Designation
Description
S1
TCOL1
Temperature collector 1
S2
TSTB
Temperature tank bottom
S3
Optional sensor for measurement
purposes or options
S4
S5
TCOL2
Temperature collector 2
VFS
Optional sensor for measurement
purposes or options
RPS
V40
Adjustment channels
Channel
Sub channel 1
Sub channel 2 Factory
setting
Change to
Description
Page
ARR
1
7
System
78
LOAD >
Loading
DT O
12 °R
Switch-on temperature difference
78
DT F
8 °R
Switch-off temperature difference
78
DT1S
20 °R
Set temperature difference
78
RIS
4 °R
Rise
78
S MAX
140 °F
Tank maximum limitation
78
SMAXS
2
Sensor tank max
79
COL 1 >
Collector 1
CEM1
270 °F
Collector emergency temperature 1
80
OCCO1**
OFF
Option collector cooling 1
80
CMAX1
230 °F
Maximum collector temperature 1
80
OCMI1
OFF
Option collector minimum limitation 1
80
CMIN1
50 °F
Minimum collector temperature 1
80
OTCO1
OFF
Option evacuated tube collector function 1 81
R2
R1
S5
S2
S1
Temp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM
1
PWM
2
N
R4
V40
L'
VFS
RPS
out
in