Instruction of SR81 Split Pressurized Solar Hot Water System
Page 13 of 48
►Press “+/-” button to select submenu,
►Press “SET” button to enter the value adjust interface
►Press “+/-” to adjust value
►Press “SET” or “ESC” to confirm the value you set
►Press “ESC”, exit the submenu.
Note: Enter the menu adjustment interface, if you don’t press any button within 3 minutes,
screen will exit the adjustment and turn to main interface.
6.3 Value checking and function checking
Under normal running status of controller, press “ +/-“ button
to check the measured value of temperature of collector and
tank, value of flow rate (L/M) , status of thermal sterilization
function , status of auxiliary functions , status of voltage of
battery(VOL), running time of display ( DAYS), running time of controller ( MDAY), program version
of display (SW), and program version of main controller (SW-M)
Note:
Flow rate, thermal sterilization function, auxiliary functions can only be displayed only when
these functions are triggered.
When thermal sterilization function is running, time of thermal sterilization can be checked.
When one of any auxiliary functions is running, its corresponding signal blinks on the display.
SW: program version of display, SW-M: program version of controller.
DAYS:running time of display; MDAY:running time of controller
When you already in the interface of value checking function, if no any button is pressed
within 3 minutes, the display will return to the main interface.
7. Functions operation and parameters setting (for user)
7.1 Timing heating
Function description:
Electrical heater or gas / oil boiler is normally used as back-up heating source of a solar hot water
system. Through this timing heating function controller can keep the tank temperature constantly.
When tank temperature (T3) drops below the switch-on thermostats temperature, back-up heating
output HR is triggered, when T3 rises up to the switch-off thermostats temperature, HR is ceased.
Set time sections and temperature for timing heating
Factory set:
The first time section: default at 4:00 to start heating, and at 5:00 to stop heating, and
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