STIEBEL ELTRON SOM 10 - Manual (Page 33)

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In systems with 2 or more stores, the correspon-
ding number of seperate menu items (Store 1 to
Store 5) is displayed instead of Store.
For each store, an individual ∆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 / Ma-
ximum store temperatures, all stores are loaded up
to their Stset temperatures first (according to their
priority and the store sequence control). Only when
all stores have exceeded Stset will they be loaded
up to their Stmax temperatures, again according to
their priority and the store sequence control.
Store (1 / 2 / 3 / 4 / 5)
Solar / Basic settings / Store (1 / 2 / 3 / 4 / 5)
Adjustment channel Description Adjustment range / selection Factory setting
∆Ton Switch-on temperature difference 1.0 ... 20.0 K [2.0 ... 40.0°Ra] 6.0 K [12.0 °Ra]
∆Toff Switch-off temperature difference 0.5 ... 19.5 K [1.0 ... 39.0°Ra] 4.0 K [8.0 °Ra]
∆Tset Set temperature 1.5 ... 30.0 K [1.5 ... 60.0°Ra] 10.0 K [20.0 °Ra]
Stset Store set temperature 4 ... 95 °C [40 ... 204 °F] 45 °C [114 °F]
Stmax Maximum store temperature 4 ... 95 °C [40 ... 204 °F] 60 °C [140 °F]
Priority Priority 1
1 ... 5
(system-dependent)
HysSt
Hysteresis maximum store
temperature
0.1 ... 10.0 K [0.2 ... 20.0°Ra] 2.0 K [4.0 °Ra]
Rise Rise 1.0 ... 20.0 K [2.0 ... 40.0°Ra] 2.0 K [4.0 °Ra]
tmin Minimum runtime 0 ... 300 180
Min speed. Minimum speed 30 ... 100 % 30 %
Deactivated Blocked for solar loading Yes, No No