Operation manual of solar controller SR1568
Page 70 of 87
The monitoring period PDIS starts as soon as the temperature at the allocated sensor falls
below the disinfection temperature TDIS, once the monitoring period PDIS ends, disinfect
period SDIS starts, the allocated reference relay activates the after-heating, and SDIS
disinfect time count down “Disinfect 15” displays and flashes on the screen.
If the temperature at the allocated sensor exceeds the disinfection temperature, thermal
disinfection heating period DDIS starts, disinfect 15 counts down time displays, count down
time ends, thermal disinfection function stops.
OPARR（Parallel relay）
With this function, e. g. a valve can be controlled in parallel to the pump via a separate relay.
If solar loading takes place (R1 and / or R2) or if a solar function is active, the parallel relay
selected will be energized. The parallel relay can also be energized inversely.
INVER OFF means R1/R2 triggered, parallel reply also triggered.
INVER ON, means R1/R2 triggered, parallel reply is switched-off
Icon displays on the screen, it means parallel relay function is activated.
Icon displays on the screen, it means parallel relay function is in operation.
Note: If R1 and / or R2 are in the manual mode, the selected parallel relay will not be
energized.
OHQM (Heat quantity measurement)
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