en-US/C
A
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The priority tank will be loaded if its switch-on condi-
tions are fulfi lled and if it is not blocked. If the priority
tank is not blocked but its switch-on conditions are
not fulfi lled, the tank sequence control starts provided
that the switch-on conditions of the subordinate tank
are fulfi lled. If a subordinate tank can be loaded, it will
be loaded for the oscillating loading time tRUN. After
the loading time has ended, the pump is switched off
for the adjustable loading break tLB. If during this time
the priority tank can be loaded, it will be loaded. If the
priority tank has reached its maximum temperature,
the subordinate tank next in priority will be loaded. If
the switch-on conditions for the fi rst subordinate tank
are not fulfi lled, but the switch-on conditions for the
last subordinate tank are fulfi lled, the tank sequence
control will start working on both subordinate tanks.
If the fi rst subordinate tank has also reached its maxi-
mum temperature, the last subordinate tank will be
loaded up to its maximum temperature, if possible,
without tank sequence control.
2. In successive loading (SuLA), the priority tank will
be loaded up to its maximum temperature fi rst. Only
when the priority tank is fully loaded, will the subordi-
nate tank(s) next in priority be loaded.
3. In progressive loading (StUF), the tank with the low-
est temperature is loaded fi rst. As soon as the tem-
perature of the tank being loaded exceeds the tem-
perature of the next tank by 5 K, loading switches to
the cooler tank. If the temperature of that tank is by 5
K higher than the temperature of the third tank, load-
ing switches to the third tank. From then on, progres-
sive loading will continue in a loop, as long as there is
a suffi cient temperature difference between the tank
being loaded and the collector.
4. In parallel loading (PAr), all tanks with a suffi cient
temperature difference to the collector are loaded in
parallel up to their maximum temperatures.
This option is only available if each tank has its own
pump (ARR = 3, 4, 6).
LLOGI/LogiC/bLO1 (2)
Loading in blocks
Selection:
PRIO, SuLA, StUF
Factory setting: PRIO
5. In systems with 3 tanks or 2 tanks and vertical tank
loading, bLO loading is possible. This means that 2
tanks are combined to one. The PRIO1...3 adjust-
ment determines the loading priority and which tanks
are being combined. Tanks with the same PRIO adjust-
ment are combined. This common value is used as the
loading priority of the combined tank.
In the channel BLO1, the loading type of the com-
bined tank, in relation to the single remaining tank,
can be adjusted.
In the channel BLO2, the loading type of the two in-
dividual tanks of the combined tank can be adjusted.
BLO1
BLO2
Summary of Contents for SCU345
Page 71: ...en US CA 71 Notes ...
