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RTH Radiation value (radiation threshold) in W/m
2
above which rinsing is allowed.
Without a radiation sensor, the computer calculates the necessary temperature
increase for the long-term mean that launches rinsing from this value.
(ex works = 150W/m
2
)
Adjustment range 0 to 990 W/m² in 10 W/m² steps
PRT Pump run-time (rinsing time) in seconds. During this time, the pump should
have pumped roughly half of the content of the collector’s heat transfer medium
past the collector sensor. (ex works = 15s)
Adjustment range 0 to 99 seconds
INT(max) Maximum allowable interval between two rinses. This time is automatically
reduced according to the temperature increase after rinsing. (ex works = 20min)
Adjustment range 0 to 99 minutes
NSA Number of start attempts (= counter). The system is automatically reset for a
start attempt if the last start attempt was more than four hours ago.
After-running time ART
During the start phase, the pumps may repeatedly switch on and off for a long time, espe-
cially with solar and heating systems with long hydraulic system lines. This response can be
reduced by using a speed control or increasing the pump after-run time.
After-running time
output
AT After-running time output (ex works = 0)
Setting range: 0 (no after-running time) to 9 minutes in increments of 10 seconds
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