Instruction of SR81 Split Pressurized Solar Hot Water System
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►Press “+”, “R2” displays, repeat above steps to set the manual output of R2, R3, HR.
Note:
when an output is triggered manually, only this output is triggered, others running
output will be stopped.
8.8 BLPR Blocking protection
Function description:
In order to protect the pumps against blocking after standstill, the controller is equipped with
a blocking protection function. This function switches on the relays one after another every
day at 12:00 am and let them run for 10s.
Menu Structure
Function setting
►Select BLPR main menu,
►Press “SET”, “BLPR OFF” displays
►Press “SET”, “OFF” blinks
►Press “+/-”, to activate this function, “BLPR ON” displays on the screen
►Press “SET” or “ESC” to save the setting
8.9 OTDI Thermal Sterilization Function
Function description:
This function helps to prevent the spread of Legionella in DHW tanks by systematically
activating the after-heating.
For thermal disinfection, the temperature at the allocated sensor has to be monitored. During
the monitoring period PDIS, this protection ensures the disinfection temperature is
continuously exceeded the disinfection temperature TDIS for the entire disinfection period
DDIS. Thermal disinfection can only be completed when the disinfection temperature is
exceeded for the duration of the disinfection period without any interruption.
The monitoring period PDIS starts as soon as the temperature at the allocated sensor falls
