PAW SC5.14, Manual, Page: 32 / 80

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Store (1 / 2 / 3 / 4)
Solar / Basic settings / Store (1 / 2 / 3 / 4)
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
D
Ton Switch-on temperature difference 1.0 … 20.0 K 6.0 K
D
Toff Switch-off temperature difference 0.5 … 19.5 K 4.0 K
DΤ
set Set temperature difference 1.5 … 30.0 K 10.0 K
Stset Store set temperature 4 … 95 °C 45 °C
Stmax Maximum store temperature 4 … 95 °C 60 °C
Priority Priority 1
1 … 4 (system-
dependent)
HysSt
Hysteresis maximum store tem-
perature
0.1 … 10.0 K 2.0 K
Rise Rise 1.0 … 20.0 K 2.0 K
tmin Minimum runtime 0 … 300 180
Min. speed Minimum speed (20) 30 … 100 % 30 %
Deactivated Blocked for solar loading Yes, No No
In systems with 2 or more stores, the corresponding number of seperate menu
items (Store 1 to Store 4) is displayed instead of Store.
For each store, an individual
D
T control, a set and a maximum temperature, the
priority, a hysteresis, a rise value, a minimum runtime and a minimum pump speed
can be adjusted.
In multi-store-systems with differing Store set / Maximum store temperatures,
all stores are loaded up to their Store set temperatures fi rst (according to their
priority and the store sequence control). Only when all stores have exceeded
Stset will they be loaded up to their Maximum store temperatures, again ac-
cording to their priority and the store sequence control.
Loading logic
Solar / Basic settings / Loading logic
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
Load. break Loading break time 1 … 5 2
Circ. Circulation time 1 … 60
15
Pause speed Pause speed Yes, No No
Speed Pause speed (20) 30 … 100 %
30 %
Pump del. Pump delay Yes, No No
Delay Delay time 5 … 600 s 15 s
In systems with 2 or more stores, loading logic adjustments can be made in this
menu.
In systems 1 and 2, only the menu item Pump delay will be available.
Store sequence control:
If the priority store cannot be loaded, the subordinate store next in priority is
checked. If useful heat can be added, it will be loaded for the circulation time (Circ.
– factory setting 15 min).
After this, the loading process stops and the controller monitors the increase in col-
lector temperature during the loading break time Load. break. If it increases by 2 K,
the break time timer starts again to allow the collector to gain more heat. If the col-
lector temperature does not increase suffi ciently, the subordinate store will be loaded
again for the Circ. time as before.
As soon as the switch-on condition of the priority store is fulfi lled, it will be loaded.
If the switch-on condition of the priority store is not fulfi lled, loading of the second
store will be continued. If the priority store reaches its maximum temperature,
store sequence control will not be carried out.
If store sequence control is active and the system switches to load the priority
store, the parameter Load. break also acts as a stabilisation time, during which the
switch-off condition is ignored while the system operation is stabilising.