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manual abstract
rust) in the condenser of the heat pump. A ATTENTION!_ Any work on the heat pump may only be performed by authorised and qualified after-sales service technicians. A ATTENTION!_ Disconnect all electrical circuits from the power source prior to opening the device. 1.2 Legal Regulations and Directives This heat pump conforms to all relevant DIN/VDE regulations and EU directives. Refer to the EC Declaration of Conformity in the appendix for details. The heat pump must be connected to the power supply in compliance with all relevant VDE, EN and IEC standards. Any further connection requirements stipulated by local utility companies must also be observed. The heat pump is to be connected to the heat source system and the heating system in accordance with all applicable regulations. Persons, especially children, who are not capable of operating the device safely due to their physical, sensory or mental abilities or their inexperience or lack of knowledge, must not operate this device without supervision or instruction by the person in charge. Children must be supervised to ensure that they do not play with the device. 1.3 Energy-Efficient Use of the Heat Pump By operating this heat pump you are helping to protect our environment. Both the heating system and the heat source must be properly designed and dimensioned to ensure efficient operation. It is particularly important to keep water flow temperatures as low as possible. All connected energy consumers should therefore be suitable for low flow temperatures. Raising the heating water temperature by 1 K corresponds to an increase in energy consumption of approx. 2.5 %. Low-temperature heating systems with flow temperatures between 30 °C and 50 °C are particularly well-suited for energy-efficient operation. 2 Purpose of the Heat Pump 2.1 Application The water-to-water heat pump is designed for use in existing or newly built heating systems. Water is used as the heat transfer medium. It can be supplied by wells or other water systems. In order to eliminate the risk of corrosion at the evaporator, the well water must be evaluated regarding the corrosion behaviour of metallic materials according to DIN 50930. Details can be found in the project planning and installation manual for heat pumps for heating purposes. A ATTENTION!_ The well water must comply with the required water quality standards. 2.2 Operating Principle A well pump conveys the water to the evaporator of the heat pump. There the heat is transferred to the refrigerant in the refrigerating circuit. The refrigerant is drawn in by the electrically driven compressor, compressed and “pumped” to a higher temperature level. The electrical power needed to run the compressor is not lost in this process. Most of it is absorbed by the refrigerant as well. Subsequently, the refrigerant is passed through the condenser where it transfers its heat energy to the heating water. Depending on the set operating point (thermostat setting), the heating water is thus heated up to a max. of 60 °C. E-2 4 3 Basic Device 4 Transport The basic device consists of a ready-to-use heat pump for indoor installation, complete with casing, switch box and integrated controller. The refrigerating cycle contains the refrigerant R407C. The refrigerant is CFC-free, non-ozone depleting and non-combustible. All components required for the operation of the heat pump are located in the switch box. An external wall temperature sensor including fixing accessories and a dirt trap are supplied with the heat pump. The power feed for the load current and the control current must be installed by the customer. The supply lead of the well pump (to be provided by the customer) must be connected to the switch box. It is important to ensure that the integrated motor protection is sufficient for the pump provided by the customer. 1 2 A lift truck is suited for transporting the unit on a level surface. Carrying straps may be used if the heat pump needs to be transported on an uneven surface or carried up or down stairs. These straps can be passed directly underneath the wooden pallet. A ATTENTION! A ATTENTION!_ The heat pump must not be tilted more than 45° (in any direction). Use the holes provided in the sides of the frame to lift the unit without the pallet. The side panel assemblies must be removed for this purpose. Any commercially available length of pipe can be used as a carrying aid. A ATTENTION!_ Do not use the holes in the panel assemblies for lifting the device! 1) Evaporator 2) Switch box 3) Liquifier 4) Compressor E-3 English English 5 5 Set-up 5.1 General Information The unit may only be installed indoors in rooms with low humidity on a level, smooth and horizontal surface. The entire base of the frame should lie directly on the floor to ensure a good soundproof seal. If this is not the case, additional sound insulation measures may be necessary. The heat pump must be installed so tha...
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