Filling; Adaption To The Individual Requirements - Würth LATENTO XXL 300 Instrucciones De Montaje

Calibration
During calibration, keep the button pressed with the system switched off until
"RESET" appears in the display. Then press the button briefly again so that an
"X" appears under the "J". After the display has gone out again, calibration is
automatically completed. After calibration, the display initially indicates an empty
tank even when it is full. As after battery replacement, a slight increase in filling
level will lead to the correct filling level being indicated again.

6.5 Filling

After installation the filling level & temperature display must be calibrated (see
chapter 6.4)!
Fill the LATENTO XXL with drinking water via the filling and draining valve. Open
the cover for the optional E-heating rod to allow the air displaced by the filling
process to escape.
When using the E-heating rod:
Screw the heating rod as far out of the thread as necessary to allow displaced air
to escape.
Fill the system with water until the segment display of the filling level indicator is
at "OPT". Since the filling level sensor is only located in the topmost 40 cm of the
LATENTO, it takes some time for the filling level to be indicated on the display. Put
the display into filling mode during filling! With the system switched off, keep the
button pressed until the word "LONG" appears in the display. The display then
remains switched on for about 15 minutes.
After filling, close the KFE valve and the cover for the E-heating rod again.
7. Adaption to individual requirements
The LATENTO XXL has primarily been designed to store free solar heat. The con-
ventional reheating should be limited to a minimum in order to store as much
solar heat as can be.
There are some tips in the following on how you can achieve this goal:
Select the storage tank temperature low enough so that it can just cover your
hot water requirements. The lower this temperature, the more can be stored
through the solar yield.
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