Installation , Operation and Maintenance Instructions Genius
An increase or decrease of the minimum value is only useful in exceptional cases. It may be necessary e.g. according to an unintended
high solar entry, to reduce the supply air temperature over a certain time period to discharge the cooling load.
Cooling recovery by the rotating heat exchanger
The cooling recovery by the rotary heat exchanger can not to be compared to active cooling. The warm outdoor air is only pre-heated by
the cooler extract air. The cooling capacity is low. However, when the night cooling is activated (see Settings), this power is increased.
The setting Night cooling is particularly suitable for a considerably cooling-down of the outside temperature in the night.
13.2.3 Hot Water Generation
Energy-efcient hot water comfort is a challenge, especially for heat pumps. An intelligent control as well as a corresponding user behav-
iour is important for this.
Setpoint temperature change
The setpoint temperature is preset at 45 °C, i.e. the hot water generation starts at a value of 44 °C and ends at 47 °C. This so-called hys-
teresis is adjustable in the service level. It should remain unchanged in order to ensure an adequate working zone. In contrast, the set-
point can be gradually reduced to optimize this setting so that the comfort for the entire house is secured as well as high working coef-
cient is reached. A constant water exchange must be ensured, which is usually given in a single-family area. In case of longer absence,
the setpoint temperature must be raised or the legionella function must be activated.
Electric heating rod
The combi unit Genius includes an electric heating rod of 3 kW. It ensures hot water comfort even during a failure of the heat pump
(emergency operation), with a short-term high demand (quick charge, parallel operation with the heat pump) and during long periods of
cold weather.
The bivalence point represents the performance limit of the heat pump depending on the outside temperature. If the bivalence point is
undergone, the electric heating rod is switched on for hot water generation and to ensure the required heat demand. The default setting
is -7 °C and should normally be maintained. If a decreasing DHW comfort occurs, this value must be corrected upwards. As days with
average temperatures below -5 °C are very rare, the heating rod is hardly used.
In addition, the heating rod is activated in parallel with the heat pump from the actual temperature of 53 °C at setpoint temperatures of
52 °C.
Electric heating rod for legionella mode
The water is heated to a temperature of 60 °C with an activated legionella function. This happens once a week, on the night of Sunday to
Monday.
Circulation system
A hot water circulation is not recommended for energetic reasons. If a hot water circulation is necessary due to unfavourable ducting, it
must be carried out according to the standards. When using a circulation pump, a timer must be integrated, because an additional time
program in the control is omitted intentionally. Alternatively, the use of a so-called self-learning pump is recommended.
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Comfort and Energy Efficiency
Genius - V 1.0