Assessments - 2, GPA: 4.5 ( )

Fabricante : Dimplex Arquivo Tamanho: 1.49 mb Arquivo Nome : Língua de Ensino:

An incorrect setting may result in various error symptoms and an increased elec-tric power consumption. To correctly set the overflow valve, the following procedure is recommended: Close all of the heating circuits which may also be closed during operation (depending on the type of heat pump usage) so that the least favourable operating state - with respect to the water flow rate - is achieved. Normally, these heating circuits are those of the rooms located on the south and west sides of buildings. At least one heating circuit must remain open (e.g. bathroom). The overflow valve is to be opened to such an extent that based on the current heat source temperature the maximum temperature difference between heating supply and return flow temperature is obtained, as indicated in the table below. The temperature difference should be measured as closely to the heat pump as possible. In mono-energetic systems, the electric heating element is to be deactivated. Heat source temperature max. difference between heating supply and return temperature from to -5° C 0° C 10 K 1° C 5° C 11 K 6° C 9° C 12 K 10° C 14° C 13 K 15° C 20° C 14 K 21° C 25° C 15 K Any malfunctions occurring during operation are displayed on the heat pump controller and can be corrected as described in the operating manual of the heat pump controller. E-5 English English 9 9 Care/Cleaning 9.1 Care The heat pump is maintenance-free. To prevent malfunctions due to sediments in the heat exchangers, care must be taken that no im-purities can enter the heat source system and the heating installation. In the event that operating malfunctions due to contamination occur nevertheless, the system should be cleaned as described below. 9.2 Cleaning og Heating Side The ingress of oxygen into the heating water circuit, in particular if it contains steel components, may result in the formation of oxidation products (rust). These can enter the heating system via valves, circulating pumps or plastic tubing. It is therefore important - in particular with respect to the piping of underfloor heating systems - that the installation be executed in a diffusion-proof manner. A ATTENTION!_ To prevent the accumulation of deposits (e.g. rust) we recommend using a suitable corrosion protection system. In the case of severe contamination leading to a reduction in the performance of the condenser in the heat pump, the system must be cleaned by a heating technician. Based on current knowledge, we recommend cleaning with a 5% phosphoric acid solution or, in the case that cleaning needs to be performed more frequently, with a 5% formic acid solution. In either case, the cleaning fluid should be at room temperature. It is recommended that the heat exchanger be cleaned in the direction opposite to the normal flow direction. To prevent acidic cleaning agents from entering the circuit of the heating installation we recommend that the flushing device be fitted directly to the supply and return lines of the condenser of the heat pump. Thereafter the system must be thoroughly flushed using appropriate neutralising agents in order to prevent any damage caused by cleaning agent residues that may still be present in the system. All acids must be used with great care, all relevant regulations of the employers' liability insurance associations must be adhered to. If in doubt, contact the manufacturer of the chemicals! 9.3 Cleaning of Heat Source Side A ATTENTION!_ The supplied strainer must be fitted in the heat source inlet of the heat pump in order to protect the evaporator against the ingress of impurities. The filter screen of the strainer should be cleaned one day after commissioning, thereafter every week. If no more contamination can be noticed any more, the strainer filter can be removed in order to reduce pressure losses. 10 Malfunctions / Troubleshooting This heat pump is a quality product and designed for trouble- and maintenance-free operation. In the event that a malfunction occurs nevertheless, it will be indicated on the display of the heat pump controller. Simply consult the Malfunctions and Troubleshooting table contained in the in-stallation and operating manual of the heat pump controller (manager). If you cannot correct the malfunction yourself, please contact the after-sales service agent in charge. A ATTENTION!_ All work on the heat pump may only be performed by an authorised an qualified after-sales service. A ATTENTION!_ Disconnect all electrical circuits from the power supply before opening the enclosure. 11 Decommissioning / Disposal Before removing the heat pump, disconnect the unit from the power source and close all valves. Environment-relevant requirements regarding the recovery, recycling and disposal of service fuels and components in accordance with all relevant standards must be adhered to. Particular attention must hereby be paid to the proper disposal of refrigerants and refrigeration oils. E-6 12...

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