Main Menu; Heating Settings; Dhw Settings - Bosch Compress 3400iAWS E Operation Manual

3.3

Main menu

Depending on the heating appliance and how the user interface is used,
not all menu items will be available for selection; see overview of main
menu at the end of this document.
3.3.1

Heating settings

Menu: Heating
Menu item Description
Op. mode Select the heating operating mode: optimised or
based on time program.
Temperature Temperatures for the levels [Heating], [Setback ]or
settings [Optimised operation] can be set in this menu.
 see Tab. 5
Time program
 see Tab. 6
Summer/winter
changeover
 see Tab. 7
DHW alternating
operation
Table 4 Heating settings
Adapting the Time program for the automatic mode
Menu: Time program
Menu item Description
Activate time Activating automatic mode triggers control of the
program room temperature according to the settings in the
selected time program [My time program 1] or [My
time program 2].
My time program 2 switching times can be set for each day or group of
1 days. One of the two operating modes (or a
temperature) can be assigned to each switching
time in automatic mode. The minimum duration of a
time slot between two switching times is
15 minutes.
Resetting prog. The default setting for [My time program 1] can be
restored here.
 See [My time program 1]
My time program
2
Resetting prog. The default setting for [My time program 2] can be
restored here.
Rename time The names of the time programs can be changed in
prog. the same way as the names of the heating circuits.
This helps to select the correct time program,
e.g. "family" or "night shift".
Table 5 Time program settings for heating
Setting the summer/winter switchover threshold
CAUTION
Risk of system damage!
▶ Do not switch over to summer mode if there is a risk of frost.
Compress 3400iAWS E – 6721852787 (2023/01)
Menu: Summer/winter changeover
Menu item Description
Heating/Cooling • In summer, heating/cooling mode can be
switched off [Continuous summer].
• The heating/cooling mode can be activated/shut
down based on the outside temperature (this is
only available if the [Automatic mode] is active in
the heating circuit).
• The heating mode can be active [Continuous
heating]. However, heating starts only if it is too
cold inside.
• The cooling mode can be active [Cooling].
However, cooling starts only if it is too hot inside.
If more than one heating circuit is installed, [Heating
circuit 1 ... 4] is displayed instead of this menu item.
Heating mode If the outside temperature
1)
from temperature threshold set here, the heating system
is switched on. In systems with more than one
heating circuit, this setting always relates to the
corresponding heating circuit in each case.
Cooling mode If the outside temperature exceeds the temperature
from threshold set here, the heating system is switched
off and cooling is enabled. In systems with more
than one heating circuit, this setting always relates
to the corresponding heating circuit in each case.
1) This menu item is only displayed if the outdoor-temperature-dependent
switching between summer and winter modes is active for the heating circuit
concerned.
2) When the outside temperature is adjusted (damped), changes to the measured
outside temperature are delayed and fluctuations reduced.
Table 6 Settings for the summer/winter changeover
Setting the DHW alternating operation
If DHW alternating operation is not activated, DHW heating has priority
and interrupts the heat requirement of the heating system, if necessary.
Menu: DHW alternating operation
Menu item Description
DHW alt. In the event of simultaneous DHW and heating
operation on demand, the system will alternate between DHW
heating and heating mode based on the times set in
[Prioritise DHW for] and [Heating priority for].
Prioritise DHW Duration of DHW heating.
for
Heating priority Duration of heating mode.
for
Table 7 Settings for the DHW alternating operation
3.3.2

DHW settings

Using the extra DHW, thermal disinfection or daily heat up functions can
lead to higher electricity cost as the electric booster heater may be
activated.
If a fresh water station is installed, setting the DHW temperature ≥ 52 °C
can lead to higher electricity cost as the electric booster heater may be
activated.
Operation
2)
falls below the
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