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DeltaSol
®
BS/4
System layout 3
Arr 3
VBus
10
9
The controller calculates the temperature difference
between collector sensor S1 and store 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 relay 1, and the store will be loaded until the
switch-off temperature difference (DT F) or the maximum
store temperature (S MX) is reached.
If the maximum collector temperature (CMX) is reached, the
solar pump will be operated by relay 1 and the 3-way-valve
S1
S2
S4 / TR
R1
S3
R2
Display Channels
Channel
Description
Terminal
Page
COL
x
Temperature collector
S1
18
TST
x
Temperature store
S2
18
S3
x
Temperature sensor 3
S3
18
TSTT
x*
Temperatur store at the top
S3
18
S4
x
Temperature sensor 4
S4
18
TR
x*
Temperature return sensor
S4
18
n %
x
Pump speed relay
R1
18
h P1
x
Operating hours R1
R1
19
h P2
x
Operating hours R2
R2
19
kWh
x*
Heat quantity kWh
-
19
MWh
x*
Heat quantity MWh
-
19
TIME
x
Time
-
16
will be operated by relay 2 in order to direct the surplus
energy to a heat dump. For security purpose this will be
carried out only if the store temperature is below the non-
adjustable emergency shutdown of 200 °F.
Sensors S3 and S4 can optionally be connected for mea-
surement purposes. S3 can optionally be used as reference
sensor for the store emergency shutdown option (OSEM).
If heat quantity measurement (OHQM) is activated, sensor
S4 has to be connected as return sensor.