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Service menu
4.4
DHW settings
General DHW settings
The settings of the DHW systems can be adapted in this menu. These
settings are only available if the system is designed and configured
accordingly. Default temperature settings depend on the installed heat
source.
CAUTION
Risk of scalding!
The maximum DHW temperature can be set above 60 °C and during
thermal disinfection the DHW is heated to above 60 °C.
▶ Inform all people concerned and make sure that a mixing device is
installed.
The DHW system is activated by default at delivery.
▶ If no DHW system is installed, deactivate DHW system in the
commissioning or in the DHW menu.
Perform thermal disinfection to kill off pathogens (e.g. legionella) on a
regular basis. In the case of larger DHW systems, there may be statutory
requirements for thermal disinfection.
DHW settings menu
Menu item
Control range: Function description
DHW operation
[Switch-on temp. EM]: Set the switch on DHW-
energy manager
temperature from the energy management system.
[Switch-off temperature EM]: Set the switch-off DHW-
temperature from the energy management system.
DHW comfort
[Switch-on temperature]
[15... 65] °C: start (minimum) temperature for the DHW in
comfort mode (depending on the installed heat source).
[Switch-off temperature]
[15... 65] °C: stop (maximum) temperature for the DHW in
comfort mode (depending on the installed heat source).
[Ramp-up delay]
[4... 10...36] h: Start delay for the DHW mode.
DHW Eco
[Switch-on temperature]
[15... 65] °C: start (minimum) temperature for the DHW in
Eco mode (depending on the installed heat source).
[Switch-off temperature]
[15... 65] °C: stop (maximum) temperature for the DHW in
Eco mode (depending on the installed heat source).
[Ramp-up delay]
[4... 30...36] h: Start delay for the DHW mode.
DHW Eco+
[Switch-on temperature]
[15... 65] °C: start (minimum) temperature for the DHW in
Eco+ mode (depending on the installed heat source).
[Switch-off temperature]
[15... 65] °C: stop (maximum) temperature for the DHW in
Eco+ mode (depending on the installed heat source).
[Ramp-up delay]
[4... 48...50] h: Start delay for the DHW mode.
DHW circ. pump
[DHW circ.pump installed]: if a DHW circulation pump is
installed and to be controlled by the heat source, the DHW
circulation pump must be activated here as well.
[Off]: the DHW circulation pump cannot be controlled by
the heat source.
14
Menu item
Control range: Function description
Circulation oper.
[Off]: circulation off.
mode
[On]: circulation permanently on (by taking the start
frequency into account).
[As DHW system]: Activate the same time program for
circulation as for DHW heating. Further information and
settings of the customised time program ( user interface
operating instructions).
[Own time program]: activate customised time program
for circulation. Further information and settings of the
customised time program ( user interface operating
instructions).
DHW circ. start
If the DHW circulation pump is active via the time program
freq.
for the DHW circulation pump or if it is permanently
switched on (DHW circulation pump operating mode:
[On]), this setting affects the DHW circulation pump
operation.
[1 x 3 minutes/h] ...[3 x 3 minutes/h]...
[6 x 3 minutes/h]: the DHW circulation pump goes into
operation once ... 6 times per hour for 3 minutes.
[Permanent]: the DHW circulation pump is permanently in
operation.
Autom. therm.
[Yes]: the thermal disinfection is started automatically at
disinfect.
the set time. If a solar system is installed, the thermal
disinfection must also be activated for this ( Technical
documentation [MS 100] or [MS 200]).
[No]: the thermal disinfection is not started automatically.
Therm.
[Monday] ... [Tuesday] ... [Sunday]: weekday on which
disinfection day
thermal disinfection is performed.
[Daily heat-up]: thermal disinfection is performed daily.
Therm.
[00:00 ... 02:00 ... 23:45]: time of day for the start of
disinfection time
thermal disinfection at the set day.
Therm.
[60 ...65...80] °C: temperature to which the DHW volume
disinfection temp.
is heated during thermal disinfection.
Maximum duration [60 min...180...240] min: Maximum duration of the
thermal disinfection.
Heat maint. time
[0 h...1...6] h: Time during which the temperature is held
at thermal disinfection.
Daily heat-up
[Yes]: The DHW volume is automatically heated up daily at
the same time to 60 °C.
[No]: No daily heat-up.
Daily heat-up time [00:00 ... 02:00 ... 23:45]: time for the start of the daily
heat-up.
DHW alternating
[Yes]: If a simultaneous heat requirement from the heating
operation
system and the DHW system are present, the heat source
will alternating supply the heating system or DHW based on
set times.
[No]: DHW heating has the higher priority and interrupts
heating mode, if necessary.
[Prioritise DHW for]:
[0...30...120] min: Duration of DHW heating.
[Heating priority for]:
[5...20...120] min: Duration of heating mode.
Heat. circ. p. on,
[Yes] | [No]: Set if all heating circulation pumps should run
DHW op.
when DHW heating is active.
Table 17 Settings in the DHW menu
HPC 410 – 6721832682 (2021/02)
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