Split system (Single phase and 3-phase type)
68 Maintenance Document 1544-1
4.3.6 DHW Functions
The control sets the DHW temperature, according to
the time program or continuously, to the desired
setpoint. The priority of DHW charging over room
heating is adjustable in this case.
The controller has a configurable legionella function
designed for protection against legionella in the
storage tank and the pipes. The circulation pump is
controlled according to the current time program and
operating mode.
Setpoint value
Line no. Programming line
1610 Nominal setpoint
1612 Reduced setpoint
The DHW is heated to various setpoint values. These
setpoints are active according to the selected
operating mode and allow the desired temperatures
to be reached in the DHW storage tank.
Important:
For optimal operation we recommend reducing the
setpoints to the lowest value.
Setpoints which are too high may interfere with
heating and cause some discomfort. In this case
DHW/Heating changeover cycles may successively
occur.
If DHW charge boosting is not desired during the day,
we recommend adjusting the reduced temperature
setpoint to 15°C. Full charging will occur during the
night at the nominal temperature.
Release
Line no. Programming line
1620 Release of DHW load
(24h/day / Heating circ time pgm / Time program 4/DHW / Low-tariff/ Time pgm 4/DHW or Low-tariff)
24h/day
(Not recommended)
Regardless of the time programs, the temperature of
the domestic hot water is continuously maintained at
the DHW nominal setpoint temperature.
Example:
Heating circuit time programs:
(Not recommended)
DHW reduced setpoint
Comfort setting DHW max setpoint
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