Additional programming options
8
Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
68
8.5 Thermal disinfection
If "Therm. disinfect" has been selected for your heating system, the DHW is
brought to a temperature once or several times a week that is high enough,
for
example, to kill off legionella bacteria.
The cylinder primary pump and DHW circulation pump (if installed) run
constantly during thermal disinfection.
Thermal disinfection is started according to the times set at the factory. If
required, your heating contractor can alter these settings.
Thermal disinfection is indicated by the LED display Z on the FM441 and
FM445 modules.
WARNING!
RISK OF SCALDING
from hot water in the DHW circuit of the heating system if it is not equipped
with a thermostatic mixer.
z During and shortly after thermal disinfection, do not open any hot water tap
without mixing in some cold water as well.
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