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Send emailThe autonomous controller EHR-ZKO is an additional device designed for air handling units with the option of air intake directly from the outside or via a ground heat exchanger:
- The ground heat exchanger is used by the controller in the cold season of the year when the outside temperature drops below the set limit - the intake air is heated by the heat of the ground heat exchanger. Similarly, in the warm season of the year, the ground heat exchanger is used when the temperature exceeds the set temperature limit - the intake air gives up its heat to the ground heat exchanger.
- For the ground air exchanger, the change of the intake (directly from outside or from the ground collector) takes place continuously within a certain adjustable range of outdoor temperature. For a ground liquid heat exchanger, the pump of the ground heat exchanger circuit is switched from certain limits of outdoor temperature.
The controller is mounted on the wall in the indoor space, the temperature sensor is placed on the north façade protected from direct weather. The controller shall be interfaced with either the actuator for controlling the damper of the ground air exchanger or the pump of the ground liquid exchanger.
The temperature for winter and summer operation and the steepness of the control (switching hysteresis) can be set on the controller.
The controller also includes an outdoor temperature sensor. Dimensions: 230 × 275 × 140 mm.
By following the instructions in the manual, no risk should arise regarding safety, health and the environment in accordance with the EC Directives (with CE marking). The same applies to other products used in the equipment or during installation. Please consider the following general information important:
- observe the safety instructions to avoid damage to the equipment or personal injury
- the technical information given in these instructions must not be altered
- it is forbidden to interfere with the equipment's motor
- in order to comply with the EC directives, the equipment must be connected to the mains in accordance with the applicable regulations
- the equipment must be installed in such a way that, the equipment must comply with the applicable regulations for the operation of electrical equipment
- it must always be disconnected from the power supply before any tampering with the equipment
- appropriate tools must be used when handling or maintaining the equipment
- the equipment must be used only for the following purposes, for which it is intended
- this appliance must not be used by children under the age of 8 years and by persons with reduced physical, sensory or mental abilities, or persons with a lack of experience and knowledge, unless they are supervised by a responsible person or have been adequately instructed in the safe use of the appliance and can understand the risks involved
- the user must ensure that children do not play with the appliance
- cleaning and maintenance of the appliance must not be carried out by unsupervised children
