System Layout 2 - Viessmann SCU224 User Manual

SCU224

System layout 2

The controller calculates the temperature difference bet-
ween collector sensor S1 and tank sensor S2. If the diffe-
rence 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 tank will be loaded until the
switch-off temperature difference (DT F) or the maximum
tank temperature (S MX) is reached.
Arr 2
S1
R1
Display Channels
Channel Description
x*
INIT ODB initialization active
FLL x* ODB filling time active
x*
STAB ODB stabilization in progress
COL x Temperature collector
TST1 x Temperature tank 1 bottom
TSTT x Temperature tank 1 at the top
TST2 x Temperature tank 2 bottom
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
8
|
Heat exchange from tank 1 to tank 2 will be operated by
relay 2, if the temperature difference between sensors S3
and S4 is larger than or identical to the adjusted switch-on
temperature difference (DT3O), until the adjusted minimum
(MN3O) and maximum (MX3O) temperature thresholds of
the respective tanks are reached.
Tank 1
S3
S2
Tank 2
S4
R2
Terminal
-
-
-
S1
S2
S3
S4
R1
R2
R1
R2
-
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