Ventilation Detection; Automatic Hydraulic Balancing; Automatic Operating Mode Change - Bosch Src 100 Rf Installations- Und Bedienungsanleitung

Detailed functional description
6.6

Ventilation detection

The individual control for radiators can detect a rapid drop in the room
temperature, such as occurs during ventilation in winter. In this case, the
individual control automatically reduces the temperature. The set room
temperature is lowered for a few minutes and an open window is shown
on the display.
6.7

Automatic hydraulic balancing

Automatic hydraulic balancing is based on an adaptive (self-learning)
thermal process. As with static (classic) hydraulic balancing, the aim is
to ensure that all rooms are supplied evenly with the required amount of
heat.
In simple terms, the static procedure is based on a calculation and
subsequent adjustment of the heating water flows for each radiator.
With automatic hydraulic balancing, this radiator-related calculation and
adjustment is no longer necessary. The system takes care of this. A
central element here is the room temperature, which is constantly
recorded by the individual controls and passed on to the system.
• Calibration is carried out by determining the heat-up times of the
individual rooms (individual controls).
• Subsequently, the heat-up times of all rooms are continuously
equalised
– in rooms that heat up more quickly than other rooms, the volume
flow is reduced (throttling in the valve)
– in rooms that heat up more slowly than other rooms, the volume
flow is reduced less or not at all
The benefit compared to the static method is the continuous
optimisation and thus permanent adaptation to changing boundary
conditions, such as a change in user behaviour or insulation of the
building.
When and where can automatic hydraulic balancing be used?
The prerequisite is always that the heating system has been properly and
professionally designed and installed. Then automatic hydraulic
balancing can be used with the following boundary conditions:
• 2-pipe heating circuit with radiators
• up to 16 free-standing or freely suspended radiators (not concealed)
• all radiators equipped with networked individual controlled radiators
Automatic hydraulic balancing does not replace the correct design and
setting of the heating circuit pump. Balancing is carried out on a radiator-
specific basis.
Special features to be considered
If one or more radiators are undersized, radiators that are correctly
designed can be throttled unnecessarily. This would significantly reduce
the heating capacity (heat-up speed) in these rooms.
If the radiator(s) in a room have been designed to be larger than normally
required for particularly rapid heating, the radiators can be throttled
back relatively sharply. This would noticeably reduce the heating
capacity (heat-up speed) in this room.
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6.8

Automatic operating mode change

The individual controls follow the operating mode of the heating/cooling
circuit to which the individual controls are assigned. It is not necessary
to manually change the operating mode of each individual control, which
is the case with non-networked systems. The individual controls switch
automatically between Heating, Cooling, Off , and Holiday mode.
• Heating circuit in Heat. mode HC1 = all individual controls in heating
mode
• Heating circuit in Cooling mode = all individual controls in cooling
mode.
• Heating circuit Off (e.g. wall hung condensing boilers in summer
mode) = all individual controls in OFF mode.
OFF appears in the display of the individual control. In this case,
operation of the individual control is blocked to a large extent as no
heating water is supplied by the wall hung condensing boiler, for
example.
• The respective settings ((Auto or Manual plus set for set room
temperature or Off) for the respective operating mode (heating or
cooling mode) are saved for each individual control. If, for example,
an individual control is in Heat. mode HC1 and operating mode Auto
is active, but was previously in Cooling mode in Off operating mode,
the operating mode of this individual control changes from Auto to
Off when the operating mode changes from Heat. mode HC1 to
Cooling mode. The Bosch HomeCom Easy app can be used to
configure in advance, if the corresponding operating mode is not yet
active, which operating mode the respective individual controls
should adopt.
• Heating circuit in Holiday mode = all individual controls in holiday
function.
The set room temperature of the individual controls corresponds to
the set room temperature set for the holiday function.
If the Holiday mode is active, changes to the set room temperature (e.g.
manual change on the individual control) are automatically reset by the
individual control system to the set room temperature set for the holiday
function after a short time.
SRC 100 RF – 6721856014 (2024/11)