SystemAir Combi Unit Genius, Installation, Operation And Maintenance Instructions

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Changing the heating curve
NOTE
The default settings ensure usually a comfortable operation with high energy efficiency. The temperature can be
adjusted individually.
Any reduction of the setpoint room temperatures by 1 °C leads to an energy saving of about 6%. However, you should never give up
comfort. Therefore, a heating curve was stored as a default setting in Settings . This curve provides a gradual increase of the setpoint
temperature with decreasing outdoor temperature (see Settings ).
This compensates the influence of the lower surface temperatures of room walls and windows to comfort. A parallel offset and other set -
point settings enable the user an individual adjustment.
Individual room temperature control
A special control is the individual room temperature control. This is the most energy consuming but also the most convenient control
method, as the PTC elements are constantly activated. Different temperature control of bedrooms and living rooms provide a comfortable
profit especially in very cold winter periods. These periods and therefore also the energy consumption is limited.
The combination of outdoor temperature compensated and individual room temperature control ensures highest comfort, but is also
energy intensive. Different user behaviour and demands can be taken into regard by different control options.
Residential ventilation
A manual window ventilation is not required due to the system integrated controlled residential ventilation. This is especially important in
winter and as a basic requirement for proper heating.
Window shading
The windows should not be shaded to ensure a solar input and thus to reduce the heating demand.
Night setback
A night setback is integrated in the control. In a building with very good thermal insulation, the effect of the night setback has a negligible
importance. A night setback can be recommended for the outdoor compensated room setpoint offset (factory setting), because an auto-
matic setpoint increase can be avoided or compensated.
13.2.2 Summer Operation
Active cooling
Due to modern building standards, active cooling has become considerably more important. It is very difficult to nearly impossible to
carry away the generated heat of unintended solar entry or increased internal loads in summer.
The combi unit
Genius realizes the cooling function by a reverse cycle. However, this feature is not comparable to an air conditioning
system, since the maximum input power and thus the possible cooling performance of the heat pump is limited due to the design accord-
ing to the heating load. In addition, negative side effects of an air conditioning system can be avoided, such as high power consumption
or unpleasant low air temperatures.
RECOMMENDATION
Ensure in summer that the solar entry will be largely minimized as well as to minimize and control internal loads. This
is a fundamental condition for energy efficiency houses ensure a comfortable living standard in general as well as for a
proper cooling function of the unit.
However, activate the cooling function when needed in time. Otherwise, the cooling load can be reduced only inad-
equate.
By the cooling curve stored in the control (see Settings ), the temperature setpoint is gradually increased in order to avoid large tempera-
ture differences between indoor and outdoor temperature. In addition, the cooling energy consumption is reduced. A useful side effect of
active cooling is an associated dehumidification. It improves the comfort especially on hot, humid days.
Basically, it is in the users discretion whether, and if so, how he uses the cooling function. The increased power consumption must be
considered even during the summer months when intensively used.
The starting point for the active cooling is freely selectable (see Settings , default settings 26 °C). The minimum supply air temperature for
cooling mode is activated by default to 16.5 °C for comfort reasons.
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Genius - V 1.0
Comfort and Energy Efficiency