Bosch Compress 3000 DW FOO Installation Instructions Manual page 32

32 | Appliance status information
Weekday programming of the "Leg" function
▶ Select " " by using "+" and "-" keys.
▶ Press „ok".
„Leg" function activated and day of the week for the
disinfection flashing.
Define the day of the week for disinfection.
▶ Select the day, by using the „+" and „-" keys.
▶ Press „ok".
Define the time to start disinfection
▶ Select the time, by using the „+" and „-" keys.
▶ Press „ok".
Upon reaching a temperature of 60 °C at the bottom part of the
tank for more than 35 minutes, the appliance returns to normal
operation according with the previous settings.
In case a programed period (P1, P2 or P3) is
selected, the auto-activation of the LEG
mode will be postponed to the next
activation of the selected programed period.
The finalization of the thermal disinfection
will have priority over the end of the
programed period,i.e., in case the
programed period is too short to allow the
conclusion of the LEG mode, the appliance
will be forced to operate until the thermal
disinfection is concluded.
Manual activation of the „Leg" function
▶ Access the „Leg" function and press „ok".
▶ Select " " by using "+" and "-" keys.
▶ Press „ok".
„Leg" function activated.
Upon reaching a temperature of 60 °C at the bottom part of the
tank for more than 35 minutes, the device returns to the
previously selected mode.
The disinfection cycle manually activated will
not inhibit the automatically scheduled
disinfection cycle.
6 720 808 869 (2014/06)
The legionella disinfection may take
additional 6 to 8 hours to be conclude after
the regular heating assured by the heat pump
cycle. To draw off hot water from the tank
during the last stage of the legionella
disinfection may extend the process. In case
24 hours have passed since the legionella
process has been activated, the appliance
will turn on the auto-boost to speed it up.
Therefore, to maximize the appliance
efficiency, it is recommended to always
program the legionella to a period where no
hot water consumption is expected for a
longer period of time combined with low
energy tariffs: for instance, program the start
of the legionella cycle to the end of the
afternoon allowing the appliance to recover
during the evening and conclude the
disinfection during dawn.
In situations where high consumption of hot
water are combined with shorter periods of
no consumption, the water speed selector
should be adjust to position "III" (see
section 4.8) in order to minimize the
probability of not having the disinfection
process concluded in due time (less than
48h after starting).
During the final period of the legionella
control cycle, when the electrical element
ensures the disinfection, the appliance will
remain silent while flashing LEG on the
display screen.
Furthermore, to increase the energy savings
and ensure that the water is not overheated,
the electrical element works intermittently.
Hence, there are periods when the electrical
heater remains off but the unit is still
performing the legionella disinfection.
Compress 3000 DW FOO