Bosch Greenstar ZBR16-3A Operating Instructions Manual page 35

Performing a manual disinfection of the DHW tank and system
B Close all DHW taps.
B Advise occupants of the risk of scalding if no tempering valve
is installed.
B Set the time and DHW temperature accordingly on the heating
control unit with DHW program.
B Set any DHW recirculation pump to continuous operation.
B Turn DHW thermostat clockwise to max (approx. 158 °F (70 °C)).
Fig. 14
B Wait until the maximum temperature has been reached.
B Open all DHW taps, from the nearest to the one furthest away,
and draw off DHW until water at a minimum of 158 °F (70 °C)
has flown from all taps for at least 3 minutes.
B Reset the DHW thermostat, DHW recirculation pump, and
heating control unit to standard operation.
To cancel the thermal disinfection:
B Switch the appliance OFF and ON again.
The appliance starts up again and the current
supply temperature is displayed.
6 720 644 013 (2011/02)
3 4
2 5
1 6
max
Thermal disinfection | 35
reset
eco
4
3
e
2
1
6
max
6 720 614 156-16.1O