STIEBEL ELTRON SOM 10 - Manual (Page 14)

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5.1 Basic systems and hydronic variants
The controller is preprogrammed for 9 basic systems.
The selection depends on the number of heat sources
(collector fields) and heat sinks (stores, pool). Factory
setting is system 1.
A solar system with vertical tank loading is im-
plemented as a 2-store system
(store top = store 1; store bottom = store 2).
The selection of the basic solar system is one of the
most important adjustments and is thus requested al-
ready in the commissioning menu.
First, the basic system is adjusted by means of the
number of stores and collectors fields, then the hy-
dronic variant.
The selected system is visualized by the correspon-
ding number of store and collector symbols. The fi-
gure to the left shows system 6 which consists of 3
stores and 2 collector fields ("east- / west collectors").
System 0: no solar system
System 1: 1 collector field
- 1 store
System 2: east- / west collectors - 1 store
System 3: 1 collector field
- 2 stores
System 4: east- / west collectors - 2 stores
System 5: 1 collector field
- 3 stores
System 6: east- / west collectors - 3 stores
System 7: 1 collector field
- 4 stores
System 8: east- / west collectors - 4 stores
System 9: 1 collector field
- 5 stores
System Variant
The hydronic variant refers to the different actua-
tors that are to be controlled. They are visualized on
the display by means of symbols, when the variant
is selected. The upper symbol indicates the actuator
belonging to the collector fields, the lower one the
actuators belonging to the stores.
The exemplary figure shows the display indicated
when system 6, variant 2 has been selected. In this
case, each collector field has a 2-port valve, the stores
are loaded by means of pump logic.
For each variant, the controller allocates the corre-
sponding relays and sensors. The allocations of the
most important combinations are shown in 5.2.