System Layout 6 - Viessmann SCU224 User Manual

SCU224

System layout 6

The controller calculates the temperature differences
between collector sensor S1 and tank sensors S2 and S3. If
the differences are larger than or identical to the adjusted
switch-on temperature differences (DT1O / DT2O), the
solar pumps will be operated by relay 1 and / or relay 2,
and the respective tank will be loaded until the switch-off
temperature differences (DT1F / DT2F) or the maximum
Arr 6
S1
S4
R1 R2
Display Channels
Channel Description
COL x Temperature collector
TST1 x Temperature tank 1 bottom
TST2 x Temperature tank 2 bottom
S4 x Temperature sensor 4
n1 % x Pump speed R1
n2 % x Pump speed R2
h P1 x Operating hours R1
h P2 x Operating hours R2
TIME x Time
20
|
tank temperatures (S1MX / S2MX) are reached. The priority
logic causes priority loading of the selected tank (PRIO), if
possible. Loading both tanks simultaneously is possible as
well (PRIO = 0).
Sensor S4 can optionally be connected for measurement
purposes.
Tank 1
S2
Tank 2
S3
Terminal Page
S1 37
S2 37
S3 37
S4 37
R1 38
R2 38
R1 38
R2 38
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