124
Solar priority
This menu entry is only displayed if a program with solar priority is set up.
While charging the consumer with
lower priority
the device monitors the insolation on the
radiation sensor or the collector‘s temperature. If the collector temperature reaches the ac
-
tivation difference of the currently targeted consumer while the pump is already running (col
-
lector reference), the priority timer is activated. When using a radiation sensor, the insolation
must exceed a threshold, rather than the temperature difference. The priority timer deacti
-
vates the pump for the idle time (60 sec).
After the flushing time (1, 3) the device calculates the increase of the collector‘s tempera
-
ture. It predicts, whether or not the set delay time will suffice to to heat up the collector to
the priority temperature (5).
In the second case, the switching of the priority will be waited out, because the collector tem
-
perature will reach the activation temperature for the prioritized consumer before the delay
time runs out.
If the device detects that the increase within the delay time will not suffice (case 4) , the pro
-
cess is aborted and the priority timer can only be reactivated after the pump run time and
idle time have passed (60 seconds). The system remains set to lower priority within the
pump run time.
With the pump run time set to 0, lower priority will only be allowed after reaching the max
-
imum temperature of the priority (= absolute priority).
monitored outputs
Outputs which are to be monitored. If one of these outputs is
active, no starting function attempt will be made. Range: Combi
-
nation of all outputs (FS
1
= A1, FS
2
= A2)
Flushing outputs
Outputs used for flushing. If a control output is assigned to the
output, the analogue level for full speed will be output. Range:
Combination of all outputs (FS
1
= A1, FS
2
= A2)
Pump run time
Flushing time in seconds. The pump should be able to pump
about half the collector‘s fluid content past the collector sensor
within this time. (FS = 15s)
Interval time
Maximum allowed interval time between two flushing processes.
This time is lowered automatically with a rise in temperature fol
-
lowing a flushing process. (FS = 20 min)
Range: 5m to 1h 39m in 1 minute steps
Counter start
attempts
Number of starting attempts made. The counter is automatically
reset if the last starting attempt is more than 4 hours past.
Summary of Contents for UVR65
Page 2: ......
