Bosch HPC 400 Operating Instructions Manual page 30

30 | Working with the main menu
Set correct time correction (Time correction)
Example of calculation of the value for time correction with a
deviation of approx. – 6 minutes per year (the control unit
clock runs 6 minutes late):
• – 6 minutes per year = – 360 seconds per year
• 1 year = 52 weeks
• – 360 seconds: 52 weeks = – 6.92 seconds per week
• Increase time correction to 7 seconds per week.
Calibrate room temperature sensor (Room temp. sen. adj.)
▶ Locate a suitable thermometer close to the user interface
so that they are both subject to the same heat influences.
▶ Keep heat sources such as direct sunlight and body heat,
etc., away from the user interface and the thermometer for
one hour.
▶ Open the menu for sensor calibration.
▶ Turn the selector to set the correction value for the room
temperature. For example, if the thermometer is showing a
temperature 0.7 °C higher than the user interface, increase
the setting value by 0.7 K.
▶ Press the selector.
The user interface operates with the modified settings.
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