Overview To Room Individual Settings; Timer Programs; Auto Start Function - Rehau NEA SMART 2.0 Service Manual

4.6.4

Overview to room individual settings

The figure below is taken from the installation wizard and shows room
individual settings:
1
2
3
4
5
6
7
8
9
Fig. 4-4 Room configuration page
and are the set points which belong to heating and cooling
1 2
mode for the energy levels NORMAL (room is used) and REDUCED
(room is not used at this time).
is the set point for holiday mode (absent)
3
4 is the weekly timing program which switches in timer mode
between NORMAL and REDUCED
is the optimization method "Autostart" which optimizes the
5
transition between reduced and normal mode
Pilot rooms influence flow temperature and the activation of
6
heating and cooling mode
7 is the activation of heating and cooling mode
Function of external input of room unit (in this case temperature
8
limitation of floor)
Limits of floor temperature for heating and cooling mode
9
4.6.5

Timer programs

Daily and weekly programs are predefined but can be changed. The
5 weekly programs contain for each day of the week one of the 10
daily programs.
For typical applications, it is sufficient to use one or two of the weekly
programs and assign them to the different rooms (see 4).
It is also possible to use for a room not one of the weekly programs,
but for each day of the week one of the 10 daily programs.
When the room is running in timer mode, the set points, which are
1 2
defined in and are used in normal and reduced energy level.
See next chapter for optimization of transition between normal and
reduced energy levels.
The energy level of the rooms determines the operating
of the assigned mixed circuit. As long as there is a room
in energy level NORMAL, the supply by the mixed circuit is
running in the NORMAL condition.
4.6.6

Auto start function

The auto start function uses a permanently updated set of data, which
contains the heat up/cool down gradient of room temperature for different
outside temperatures. These gradients are individual for each room.
When activated (5), the system tries to reach the next set point at the
time which is defined in the timing program.
The auto start function is used in heating and in cooling mode.
It has to be differed between the transitions from REDUCED to
NORMAL (case A) and NORMAL to REDUCED (case B).
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