en
60
Installation
Indications,
functions and options
Messages
Commissioning
Operation and function
Collector minimum limitation
OCN / OCN1 / OCN2
Collector minimum limitation option
Adjustment range: OFF / ON
Factory setting: OFF
CMN / CMN1 / CMN2
Minimum collector temperature
Adjustment range:
10.0 … 90.0 °C [50.0 … 190.0 °F]
Factory setting: 10.0 °C [50.0 °F]
If the collector minimum limitation option is activated, the pump (R1 / R2) will only
be switched on, if the adjustable collector minimum temperature is exceeded. The
minimum temperature prevents the pump from being switched on too often at low
collector temperatures. A hysteresis of 5 K [10 °Ra] is set for this function. If the
collector minimum limitation is active,
❄
is displayed (flashing).
Note
If OSTC or OCF is active, the collector minimum limitation will be over-
ridden. In that case, the collector temperature may fall below CMN.
Antifreeze function
OCF / OCF1 / OCF2
Antifreeze function option
Adjustment range: OFF / ON
Factory setting: OFF
CFR / CFR1 / CFR2
Antifreeze temperature
Adjustment range:
-40.0 … +10.0 °C [-40.0 … +50.0 °F]
Factory setting: +4.0 °C [+40.0 °F]
The antifreeze function activates the loading circuit between the collector and the
store when the temperature falls below the adjusted antifreeze temperature. This
will protect the fluid against freezing or coagulating. If the adjusted antifreeze tem-
perature is exceeded by 1 K [2 °Ra], the loading circuit will be deactivated.
If the antifreeze function is activated,
❄
is displayed. If the antifreeze function is
active,
⓵
and
❄
are displayed (flashing).
Note
Since this function uses the limited heat quantity of the store, the anti-
freeze function should only be used in regions with few days of tempera-
tures around the freezing point.
The antifreeze function will be suppressed if the store temperature falls
below +5 °C [+40 °F] in order to protect the store from frost damage.
Priority logic
Note
Priority logic can be used in 2-store system only (Arr = 4, 5, 6).
PRIO
Priority
Adjustment range: SE 1, SE 2, Su 1, Su 2, 0, 1, 2
Factory setting: Arr 4: 2, Arr 5, 6: 1
If a 2-store system has been selected, the priority logic determines how the heat is
divided between the stores. Different types of priority logic are adjustable:
• spreaded loading (SE 1 and SE 2)
• successive loading (Su 1 and Su 2)
• parallel loading (0)
• store sequence control (1 and 2)
If priority PRIO SE 1 or SE 2 (only available in Arr 6) is adjusted, the subordinate
store will be loaded in parallel to the priority store if the temperature difference
between the collector and the priority store (store 1 for SE 1, store 2 for SE 2)
exceeds the adjusted value DTSE and the subordinate store has not reached its
maximum temperature.
Parallel loading will stop as soon as the temperature difference between the collec-
tor and the priority store falls by 2 K [4 °Ra] below DTSE or the subordinate store
reaches its maximum temperature.
If priority PRIO Su 1 or Su 2 is adjusted, the stores are loaded successively. The
subordinate store will only be loaded if the priority store (store 1 for Su 1, store
2 for Su 2) has reached its adjusted maximum temperature (S1MX or S2MX).
