Technische Alternative UVR65, Programs, Installation, Electric Connection User Manual

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Example for threshold values Max/Min/Diff
For this example, program 928 is used.
MIN1 S6 Yes/No Activation/deactivation of this threshold
MIN1 S6 On Above this temperature at sensor S6, output A1 is enabled.
(FS = 45°C)
MIN1 S6 Off The output that has been enabled by Min1 On is blocked again
below this temperature. In some programs, Min prevents boilers
from sooting up, in this program it prevents the buffer from cooling
off. Recommendation: The activation threshold should be set about
3-5 K above he deactivation threshold. (FS = 40°C)
Min Off can‘t be set above MIN On.
MAX1 S4 Yes/No Activation/deactivation of this threshold
MAX1 S4 Off Above this temperature at sensor S4, output A2 is blocked.
(FS = 65°C)
MAX1 S4 On The output blocked by reaching Max1 Off is re-enabled below this
temperature. (FS = 60°C)
Max serves to limit cylinder temperatures in this case.
Recommendation: The deactivation threshold should be set about
3-5 K above the activation threshold.
Max On cannot be set above Max Off .
MIN3 S6
Min3/Max3
Below this temperature at sensor S6, the heating request A3 is acti -
vated (FS = 60°C)
MAX3 S6
Min3/Max3
If this temperature is reached, the heating request is disabled
(Hold circuit with
Min3 ) (FS = 85°C)
Min3 can‘t be greater than Max3 .
DIFF1 S6-S4 Yes/No Activation/deactivation of this threshold
DIFF1 S6-S4 On If the difference in temperature between the two sensors S6 and S4
exceeds this threshold, output A2 is enabled.
Diff is the basic functionality for differential control function of the
device. Recommendation: 3-5 K suffice for charging pumps.
(FS = 5.0K)
DIFF S6-S4 Off The output enabled by reaching Diff On is blocked again below this
difference in temperature. Recommendation: Diff Off should be set
to about 3-5K. In regard to the sensors‘ and the device‘s measuring
tolerances, a value below 2K is not recommended. Diff Off
can‘t be set above DIFF On (FS = 3K)