48 VELUX
SECTION III: SOLAR CONTROL SYSTEM
SECTION III: SOLAR CONTROL SYSTEM
4.1.14 Option antifreeze function
The anti-freeze function activates the loading circuit
between collector and store if the adjusted anti-
freeze function is underrun in order to protect the
medium against freezing up or getting "thick"
(
is shown in the display (flashing)). If the adjust-
ed anti-freeze protection temperature is exceeded by
1°C, the loading circuit will be deactivated.
Please note:
As there is only a limited heat quantity
of the store available for this function, the anti-
freeze function should only be used in regions with
few days of temperatures around freezing point.
4.1.15 Oscillating charge
Respective adjustment values:
Factory setting
Adjustment range
Priority [PRIO]
1
0-2
Oscillating break-time [tSP]
2 min.
1-30 min.
Oscillating charge-time [tRUN]
15 min.
1-30 min.
The above-mentioned options and parameter are
only significant for multi-store systems
(system ARR = 4, 5, 6). If
priority 0
is adjusted, the
store swhich show a temperature difference to the
collector are loaded in numerical order (store 1 or
store 2). In general only one store is loaded at that
time. For ARR = 6
parallel loading
is also possible.
OCF / OCF1 / OCF2:
Antifreeze function
Adjustment range:
OFF/ON
Factory setting: OFF
CFR / CFR1 / CFR2:
Antifreeze tempera-
ture
Adjustment range:
-10 ... 10°C
Factory setting: 4.0°C
Priority logic:
0 = Store 1/2 coequal
1 = Priority store 1
2 = Priority store 2
Priority:
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