CONTENTS SPECIAL INFORMATION Shutdown ��������������������������������������������������� 19 Troubleshooting �������������������������������������������� 19 OPERATION 13.1 Fault table �������������������������������������������������������� 20 General information �����������������������������������������4 13.2 Resetting the safety pressure limiter ����������������������� 20 Safety instructions ����������������������������������������������� 4 13.3 Resetting the high limit safety cut-out ��������������������� 20 Other symbols in this documentation ����������������������� 4 13.4 Motor overload relay �������������������������������������������...
SPECIAL INFORMATION SPECIAL INFORMATION - Install a type-tested safety valve in the cold water supply line. - The maximum pressure in the cold water line - The appliance may be used by children aged 8 must be at least 20 % below the response pres- and older and persons with reduced physical, sure of the safety valve.
OPERATION General information OPERATION Symbol Meaning Appliance disposal f This symbol indicates that you have to do something. The ac- General information tion you need to take is described step by step. The chapters "Special Information" and "Operation" are intended Units of measurement for both the user and qualified contractors.
OPERATION Safety General safety instructions Material losses Operate the appliance only when fully installed and with all safety Never cover the appliance. Covering the air intake or air discharge leads to a reduced air supply. If the air supply equipment fitted. is restricted, the operational reliability of the appliance cannot be guaranteed.
OPERATION Appliance description Appliance description DHW heating This appliance enables DHW to be supplied efficiently to several draw-off points using renewable energy. The appliance extracts heat from the ambient air. This heat is used to heat up the water in the DHW cylinder with added electric power. The amount of electrical energy and time required to heat up the DHW depend on the temperature of the air drawn in.
OPERATION Settings Appliance operation outside the application limits f To guarantee fault-free operation of the appliance, make sure e l c t r o n i c c o m f o r t you operate the appliance within its application limits (see chapter "Specification / Data table").
OPERATION Settings Settings Note In standard display mode, the display shows amount of mixed For reasons of hygiene, never set the DHW temperature water. lower than 50 °C. Set temperature 1 is the DHW temperature to which the appliance Note regulates if no external signal transmitter is connected and active. 15 seconds after every adjustment, the appliance auto- Set temperature 1 is set to 55 °C at the factory.
OPERATION Settings Rapid heating key Operation with external signal transmitter (220 V input) As standard, the appliances feature the ability to allocate a spe- Press the rapid heating key. cific, individual set DHW temperature (set temperature 2) to a connected external signal transmitter, such as a PV system or a The heat pump and electric emergency/ low tariff transmitter.
OPERATION Maintenance and care the fault codes are added together (see fault code table in chapter Appliance compo- Care and maintenance tips "Troubleshooting"). The fault key continues to flash. The electric nents emergency/booster heater is activated. DHW cylinders The DHW cylinder is equipped with a mainte- nance-free impressed current anode to safeguard The current set temperature (set temperature 1 or set tempera- it against corrosion.
OPERATION Troubleshooting Troubleshooting Problem Cause Remedy Service/fault sym- See chapter "Fault codes". Notify a qualified contractor. bol is continuously Problem Cause Remedy illuminated. No hot water is No power at the appli- Check that the appliance available. ance. is connected to the power supply.
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OPERATION Troubleshooting Fault code Application scenarios for emergency mode If the service/fault symbol is flashing or continuously illuminated If the appliance shows fault code 8, you can manually activate on the display, you can call up a fault code. emergency mode. If a different fault occurred previously, but did not cause the appliance to switch off, the display may show a fault Repeatedly press the menu key until the code that is the result of several faults added together.
INSTALLATION Safety INSTALLATION Preparations Transport Safety CAUTION Injury f Observe the weight of the appliance. Only a qualified contractor should carry out installation, commis- f Use suitable transport aids (e.g. a sack truck) and sioning, maintenance and repair of the appliance. enough personnel for transportation.
INSTALLATION Preparations - The floor of the installation room must be level and have sufficient load bearing capacity. Take note of the weight of the appliance with a full DHW cylinder (see "Specification / Data table"). A floor with insufficient load bearing capacity is in danger of collapse.
INSTALLATION Preparations Siting the appliance Minimum clearances f Carefully undo the cardboard packaging at the clips. 1 Cardboard packaging clips ≥400 ≥400 The appliance is secured to the pallet with metal brackets and screws. The metal brackets are hooked on to the feet underneath the floor plate of the appliance.
INSTALLATION Installation 10. Installation Safety valve The appliance is a sealed unvented DHW cylinder. Provide the appliance with a pressure relief valve. WARNING Injury Incorrect installation can lead to serious injury or ma- f Install a type-tested safety valve in the cold water supply terial losses.
INSTALLATION Installation 10.3.1 Standard connection without external signal transmitter Material losses Ensure condensate cannot back up. f Use a condensate drain hose with a diameter great- er than the diameter of the condensate drain bend. GNYE f Ensure the condensate drain hose is not kinked. f Route the condensate drain hose with a continuous fall.
INSTALLATION Commissioning Example 2: Photovoltaic signal via on-site relay and phase routed outside the appliance Note The relay in the inverter must meet the following re- quirements: - Potential-free relay (240 V AC / 24 V DC, 1 A) with N/O contact - Adherence to safety regulations and standards for safety extra low voltage 1 Strain relief - The switching output must be programmed so that...
INSTALLATION Shutdown 12. Shutdown f Check the function of the appliance. f Check the function of the safety assembly. Material losses Note If you disconnect the appliance from the power supply, it Following an interruption of the power supply, the is no longer protected against frost or corrosion.
INSTALLATION Maintenance and cleaning 13.1 Fault table Fault Cause Remedy The appliance Excessive pressure in Eliminate the cause of the in- switches off the refrigerant circuit. crease in pressure in the refriger- unexpectedly The safety pressure lim- ant circuit. and does not iter has responded.
INSTALLATION Maintenance and cleaning Material losses An earth cable is connected to the inside of the casing ring. The casing ring can only be removed after the earth cable has been detached. f Remove the control fascia. f A lead connects the operating controls to the appliance PCB. If necessary, pull the plug from the back of the control fascia to fully remove the control fascia.
INSTALLATION Maintenance and cleaning 14.7 Valves f Open the drain valve installed in the cold water supply line (see chapter "Water connection"). If no drain valve has been Regularly check the valves in the system (safety valve, pressure installed, undo the cold water supply line at the "Cold water reducing valve, drain valve) to ensure the operational reliability inlet"...
INSTALLATION Specification 15.1.2 WWK 303 electronic WWK 303 electronic Entry electrical cables Cold water inlet Male thread DHW outlet Male thread T&P valve Female thread G 3/4 Condensate drain Male thread G 3/4 Air intake Air discharge Cover for manufacturing aperture 15.2 Wiring diagram Material losses If X0/2 is connected, the power supply to the appliance...
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INSTALLATION Specification Behälter / storage tank bn bk bn bu Behälter / storage tank Kappe / cap Mantel / coat gnye Electronic assembly (control unit) Compressor Electronic assembly (programming unit) Temperature sensor Thermostat TSR Run capacitor Defrost controller Heating element Resistance High limit safety cut-out TSR DIP switch...
INSTALLATION Specification 15.3 Data table WWK 223 electronic WWK 303 electronic 234406 234405 Hydraulic data Nominal capacity Application limits Max. DHW temperature with heat pump only °C Maximum DHW temperature with emergency/booster heater °C Application limit heat source for heat pump operation min./max.
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INSTALLATION Specification The output data refers to new appliances with clean heat ex- changers. Nominal data to EN 16147 – heat pump for recirculation air Note on the energy efficiency class: This information complies with the official requirements for water heaters (EU regulation no. 812/2013) that will be mandatory from September 2015, based on the data for DHW heat pumps to EN 16147.
GUARANTEE Guarantee The guarantee conditions of our German companies do not apply to appliances acquired outside of Germany. In countries where our subsidiaries sell our products a guarantee can only be issued by those subsidiaries. Such guarantee is only grant- ed if the subsidiary has issued its own terms of guarantee.
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