Bosch CW 400 - Setting the summer;winter switchover threshold

6 720 820 871 (2016/12)CR 400 | CW 400 | CW 800
Working with the main menu | 25
5.3.3 Automatic adaptation of the time program
Menu: Start opt. time prog.
5.3.4 Setting the summer/winter switchover threshold
This menu item is only available with weather-compensated
control. In order to be able to use weather-compensated
control, an outside temperature sensor must be installed.
The heating system is switched off in summer mode, the
heating system in switched on in winter mode. DHW heating is
independent of the switching between summer and winter
modes.
Menu: Sum./wint. changeover
Menu item Description
Start opt.
time prog.
1)
1) Depending on the installed system, it may be necessary to
select a heating circuit (heating circuit 1 ... 8).
• If the cut-in optimisation is switched on,
the heating phases in the time program
are brought forward so that the set room
temperature is reached in advance of the
required times.
• If the cut-in optimisation is switched off,
the heating system is switched on at the
required times. The set room
temperature is reached slightly later.
Table 19 Settings for the cut-in optimisation of the time
programs
NOTICE: System damage
▶ Do not switch over to summer mode if
there is a risk of frost.
The switching between summer and winter
modes is only active in automatic mode (by
taking account of the time program). For
constant heating circuits (e.g. for a swimming
pool or a ventilation unit) the switching
between summer and winter modes is not
available.
Menu item Description
Sum./wint.
changeover
• In summer, heating mode can be switched
off (Permanently summer).
• The heating mode can be shut down based
on the outside temperature (Summer
mode from); this is only available if the
automatic mode is active in the heating
circuit.
• The heating mode can be active constantly
(Permanently winter). However, the heat
source only goes into operation if it is too
cold inside.
If more than one heating circuit is installed,
heating circuit 1 ... 8 is displayed instead of
this menu item.
Summer
operation
from
1)
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.
If the adjusted outside temperature
2)
exceeds
the temperature threshold set here, the
heating system is switched off.
If the adjusted outside temperature falls below
the temperature threshold set here by 1 °C, 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.
2) When the outside temperature is adjusted, changes to the
measured outside temperature are delayed and
fluctuations reduced.
Table 20 Settings for the switching between summer and
winter modes