Operation and Maintenance Instructions

Transcription

1 Operation and Maintenance Instructions Pressure resistant electric water heater with control panel of the series EKA EKR EWH EKL Wall-mounted storage tank with 3 connecting pieces Wall-mounted storage tank with heat exchanger Wall-mounted storage tank with one heating element Wall-mounted storage tank horizontal Please pass to the user Id.Nr.:

2 Electric water heater EKA, EKR, EWH, EKL Dear client! You have decided to purchase a water heating product with electric storage tank manufactured by Austria . Thank you for your trust. You have purchased an elegantly shaped device that represents the state of the art, that is in conformity with the applicable rules and regulations and that has been safety tested by ÖVE (Austrian Electrotechnical Association). The sophisticated enamelling coat is the result of continuous research and development efforts. Due to the constant quality checks during production, our hot water storage tanks boast technical properties that you will appreciate anew every time. Because of the environmentally friendly CFC-free insulation foam, the standby energy consumption is extraordinarily low. The ARA license of Austria AG lets you return of packaging of your device, which will then be disposed of expertly to avoid environmental damage. Installation and commissioning must be performed exclusively by an authorised installation company in accordance with these instructions. In this small manual, you will find all the information you will need for the proper installation and operation of the device. Nevertheless, please ask your concessionaire to explain how the device works and to demonstrate how it is operated. Of course, our customer service and our sales department will be more than pleased to assist you with any advice you may need. We are confident that your electric storage tank will give you many years of trouble-free operation. 2 Id.Nr.:

3 Electric water heater EKA, EKR, EWH, EKL Table of contents... Page 1. Function Hot water requirement Energy saving Standby energy consumption of the individual series Series EWH, EKA, EKR Series EKL Operation...5. Temperature setting Thermometer Setting range limitation (EWH, EKR, EKA) Prerequisites for operation...7. Installation and safety advice Dimensioned drawing Series EWH, EKA, EKR Series EKL Schematic drawing of the device Water connection Pressure resistant connection Pressureless connection Connection storage tank with 3 connecting pieces Central heating connection (only EKR) Electrical connection General information Reconnection possibilities Connection diagram EWH Connection diagram EKA, EKR, EKL Commissioning Decommissioning, draining Checking, maintenance, care Malfunctions...22 Warranty...23 Id.Nr.:

4 Electric water heater EKA, EKR, EWH, EKL 1. Function The water stored in the enamelled interior tank is heated by an electrical heater insert. A user-adjustable knob is available to preset the desired temperature. At the times determined by the responsible power supply company, the temperature controller automatically switches on the heating. Once the desired temperature in the storage tank is reached, the temperature controller switches the heater off again. If the water temperature drops, for instance because water is used up or as a result of natural cooling (an effect that is minimised by the high-quality CFC-free PU foam insulation), the heating will switch on until the preset storage water temperature is reached again. If the storage tank is equipped with a heater battery (EKR), the water may be heated with the system s water heater as an alternative to electrical heating. 2. Hot water requirement The hot water requirement of the household depends on the number of persons in the household, the sanitary installations of the flat or house, the insulation, the piping and the individual user s habits. The following table provides a list of standard consumption values for orientation. Hot water demand in litres Required storage water quantity in litres at 37 C at 55 C with 80 C with 0 C Full bath Shower Washing hands , - 3,1 Hair wash (short hair) ,4 4,2 -,3 Hair wash (long hair) ,7 -, 5,2-9,4 Use of bidet ,4-5,5,3-7,8 Washing dishes for 2 persons per day 1 14 for 3 persons per day 20 12,5 18 for 4 persons per day 24 15,2 21,5 House cleaning per bucket of cleaning water,3 9 In this table, it was assumed that the temperature of the cold water required for mixing to the indicated hot water temperature is approximately 12 C. 4 Id.Nr.:

5 3. Energy saving Electric water heater EKA, EKR, EWH, EKL The high-quality CFC-free PU foam insulation and the fitted temperature control means that our electric storage tanks are genuine energy savers. Low storage water temperatures are especially economic. Therefore, the infinitely variable temperature setting should be set to the lowest value that is actually required to cover the real hot water requirement. This helps save energy and reduces the build-up of limescale deposits in the tank. 4. Standby energy consumption of the individual series If no water is used for a long time after the end of the water heater s heating interval, the water in the tank will cool down slowly but continuously due to losses at the unit s surface. The speed of this cooling process depends on the type of device, its size, the thickness and the quality of the tank insulation. This behaviour is measured during a 24-hour period at a storage water temperature of 5 C, considering the energy input in kwh that is necessary to keep the water temperature constant during this period. 4.1 Series EWH, EKA, EKR Nominal content in litres Standby energy consumption kwh/24hrs, measured according to EN ,52 0,71 0,78 0,83 0,95 1, Series EKL Nominal content in litres Standby energy consumption kwh/24hrs, measured according to EN ,15 1,25 1,29 1,52 1,84 5. Operation All operating elements required for the operation of the electric storage tanks (EWH, EKA, EKR) (button to adjust the temperature controller) and monitoring elements (operation indicator lamp and thermometer) are included in a control panel on the front wall of the device. Wall-mounted storage tanks (EWH, EKL) do not have an operation indicator lamp. The button to adjust the temperature controller of the horizontal storage tank (EKL) is located on the front (connection side). This device is not designed to be used by persons (including children) with physical, sensory or mental disabilities or lacking experience and/or lacking knowledge, unless these are supervised by a person who is responsible for their safety or have received instructions on how to use this device from any such person. Children should be supervised in order to ensure that they do not play with this device. Id.Nr.:

6 Electric water heater EKA, EKR, EWH, EKL. Temperature setting For easier adjustment, the button to adjust the temperature controller of the electric heater has 4 main settings. These are: Setting: Protects the storage tank against freezing (up to 30 C) Approximately 40 C, hand-hot storage water Approximately 5 C, moderately hot storage water it is recommended to use this setting to prevent accidental scalding with excessively hot water. If this setting is selected, the operation of the device is extraordinarily eco nomical. Heat losses are small and the build-up of limescale is largely prevented. Low standby energy consumption. Approximately 85 C, hot storage water N.B.: Setting the control button all the way to the left does not switch off the heater (no zero setting). If the device is operated on daytime current, it is recommended to set the temperature controller to max. Pos ( approximately 5 C). Due to the hysteresis of the temperature control (± 7 K) and possible radiation losses (coolingdown of the pipelines), the temperature specifications are subject to an accuracy of ± K. EWH ❶ EKR, EKA ❶ ❹ ❷ ❹ ❷ ❸ ❸ Id.Nr.:

7 7. Thermometer To monitor the storage water temperature, types EWH, EKR, EKA are equipped with a remote thermometer. The displayed value depends on the temperature controller setting. The maximum display value is reached only if the control button is set to Pos. at the end of the respective heating cycle. If any other controller setting is chosen, the pointer will indicate a lower temperature value. Electric water heater EKA, EKR, EWH, EKL Remote reading thermometer 8. Setting range limitation (EWH, EKR, EKA) In order to exclude the risk of accidental scalding with hot water, the setting range of the temperature controller can be limited to max. 5 C. Electrically disconnect the device from the mains (all poles must be disconnected). Set control button to Pos.. Open the connection chamber and pull out the bolt from the bore in the back wall of the control panel. Reinsert bolt in the bore, inserting the long shaft first. 9. Prerequisites for operation The storage tanks must be used exclusively in accordance with the conditions specified on the rating plate. In addition to national regulations and standards recognised in the laws, compliance with the connection conditions of the local electricity company and water supply works as well as the installation and operation instructions is required. The room where the device is operated must be free of frost. The device must be installed in a reasonably expected location, i.e. if the device needs to be maintained, repaired or replaced, it must be readily accessible. If the water is very hard, either of the following options is recommended: to connect a commercially available standard descaling device upstream of the tank, to use an antiscaling tank of Austria AG or to observe a maximum operating temperature of approximately 5 C (setting Pos. ). The bare-tube heat exchanger of the EKR series must be flushed properly before the initial installation is performed. If the bare-tube heat exchanger is not used, the outer tube ends must be sealed to prevent back-cooling. The drinking water quality must be appropriate to ensure proper operation. It is recommended to fit a water filter upstream of the device to keep the tank free of dirt and other particles. Should a device, at the point of delivery, clearly display a malfunction, damage or other defect, this must not be fitted, installed or used in the system. Subsequent complaints regarding devices with an obvious defect which have been connected and installed are expressly excluded under the warranty and guarantee. Id.Nr.:

8 Electric water heater EKA, EKR, EWH, EKL. Installation and safety advice a) Important installation advice! Do not bend the hook, otherwise it could break. A failure to observe this warning can cause injury as the device may fall down! b) To mount the upper hook, a wall rail is provided with every device. The wall rail, which carries the device, is mounted on the wall with two screws. Two further screws are required (reference is made to the drawing stating the dimensions of the device) to fasten the lower wall bracket of the device to the wall. However, this bracket only provides support against the wall and prevents side-to-side movements. Do not mount wall-mounted water heaters horizontally. c) The distance between the hooks i.e. mounting dimension A - can be changed at 50mm intervals by inserting the screws in the back wall of the storage tank in different bores of the hook (only litres). Caution: Do not use any other hook than the hook provided by AE! d) With regard to the installation of the device, it is necessary to observe the dimensioned drawings of the device and the enclosed indicating labels, if any. e) Caution: In order to ensure that the mounting surface for the device and the choice of the place of installation are appropriate in consideration of the load to be supported and the strength of the mounting surface, it is necessary to take into account both the weight of the water heater and the weight of the water inside the heater (i.e. of the nominal content). Special installation systems: see thin wall and ceiling installation. f) If an envelope (or jacket) is fitted to a water heater or if the water heater is fitted in small narrow rooms or in suspended ceilings and similar, always ensure that the connection side of the device (water connections, electrical connection chamber resp. heating insert) are freely accessible and that there is no accumulation of heat. To remove the heating flange, a free space of 500mm must be available. To hook up the device in the wall rail, ensure that there is a minimum clearance of 50mm on top of the device. g) With regard to the choice or sequence of the installation materials used at the site of the installation (caution is required with mixed installations), it is necessary to consider the latest information concerning possible electrochemical processes (contact corrosion, e.g. copper/ steel). The use of insulation grade screw connections is recommended. h) If the water is particularly aggressive and requires special solutions at the site of installation, it may be necessary to consider the use of special versions of the storage tank (please consult our representation offices or our main office). i) Horizontal storage tanks: The fitting situation for horizontal tanks is determined by the function and must therefore be observed strictly. The cold water inlet (blue) and the hot water outlet (red) should be located next to each other on the same level and protrude in the lower part of the housing cover. j) The device is equipped with a safety temperature limiter that will switch off further heating once the water has reached a temperature of max. 1 C (EN ; ÖVE-EW41, Pt 2 (500) /1971). Therefore, when it comes to choosing the connection components (connection pipes, safety valve combinations etc.), it is necessary to ensure that the connection components are able to withstand a temperature of 1 C in the event of a malfunction of the temperature controller so that possible damages are prevented. k) Assembly and installation must be performed exclusively by authorised professionals. 8 Id.Nr.:

9 11. Dimensioned drawing Electric water heater EKA, EKR, EWH, EKL 11.1 Series EWH, EKA, EKR Type Nominal content in litres Variety A A changeable from to Dimensions in mm C H B T Weight in kg EWH 50 Wall-mounted storage tank EWH 80 Wall-mounted storage tank EWH 0 Wall-mounted storage tank EKR EKA 0 Wall-mounted storage tank with reater battery Wall-mounted storage tank - 3 connecting pieces EWH 120 Wall-mounted storage tank EKR EKA 120 Wall-mounted storage tank with reater battery Wall-mounted storage tank - 3 connecting pieces EWH 150 Wall-mounted storage tank EKR 150 Wall-mounted storage tank with reater battery Wall-mounted storage tank EWH Wall-mounted storage tank - 3 connecting pieces EKA View from below 3 connecting pieces Cable entry Id.Nr.:

10 Electric water heater EKA, EKR, EWH, EKL Wall-mounted storage tank with reater battery EKR Installation on a ceiling Heating flow Thin wall suspension Cable entry Heating return Id.Nr.:

11 11.2 Series EKL Electric water heater EKA, EKR, EWH, EKL Type Nominal content in litres Variety Dimensions in mm A C H B T E Weight in kg EKL 80 Horizontal storage tank EKL 0 Horizontal storage tank EKL 120 Horizontal storage tank EKL 150 Horizontal storage tank EKL 200 Horizontal storage tank Cable entry Brackets for EKL Id.Nr.:

12 Electric water heater EKA, EKR, EWH, EKL 12. Schematic drawing of the device PU insulation Outer jacket Height-adjustable hook Enamelled interior tank Hot water pipe Sensor tube Heater Magnesium anode Heater battery (only EKR) Control panel with thermometer and operation indikator lamp Lower wall bracket Adjustment knob Controller Removeable cover for the connection chamber Cable entry 12 Id.Nr.:

13 13. Water connection Electric water heater EKA, EKR, EWH, EKL 13.1 Pressure resistant connection Any warranty for our water heaters is rendered null and void if unsuitable or non-functioning storage tank connection fittings are used and if the stated operating pressure is exceeded. Water heaters whose rating plate states a nominal pressure of bar (atü or kp/cm2) are pressure resistant storage tanks. In this case, a closed connection with a line pressure of up to 5.5 bar (atü) is permitted. However, if the line pressure is higher, a pressurereducing valve must be fitted in the cold water supply line. Use only tested diaphragm safety valves or a diaphragm safety valve combination - connection fitting for pressure resistant storage tanks - for the water connection! A safety valve combination consists of stop valve, test valve, non-return valve, drain valve and safety valve with expansion water drain. It is fitted between the cold water supply line and the cold water inlet (blue) of the storage tank in the indicated order. As a general rule, the following should be observed: A faultless function of the connection fitting can only be guaranteed if it is installed in a frost-protected room. The drain of the safety valve must be open and observable. To prevent disturbances and clogging due to frost or dirt and similar, do not lead the drain line from the drip catcher (expansion water funnel) into the open. Furthermore, the drainpipe of the safety valve must be installed with a continuous downward inclination. It is not permitted to fit stop valves or another reducer between the safety valve and the cold water inlet of the storage tank. The response pressure setting of the safety valve must be lower than the nominal pressure ( bar) of the storage tank. The discharge openings of the safety valves (domestic water and heating circuits) must open out into an appropriate drainage object in order to avoid any damage caused by the escape of operating fluid. Before the final connection of the storage tank, the cold water supply line must be flushed. Once the water is connected and the storage tank is filled with (bubble-free) water, it is necessary to check the function of the connection fitting. Id.Nr.:

14 Electric water heater EKA, EKR, EWH, EKL a) To avoid limescale deposits from obstructing the air introduction system of the safety valve, operate the air introduction system of the safety valve from time to time during the operation of the facility. Check whether the valve closes once the air introduction system is released and whether the water drains completely through the funnel or the bleeding line. b) Where safety valves are fitted in front of water heaters, observe if the safety valve responds when the water heater heats up. This can be ascertained by checking that water exits the bleeding line. To be performed by: Operator, installation company Interval: every months Maintenance and repair: If no water exits when the water heater heats up or if the safety valve permanently leaks, try to activate the air introduction system repeatedly to get the valve unstuck or flush out foreign matter (for instance limescale particles) that might obstruct the sealing part. If this is not successful, get an installation company to carry out the repair. If the valve seat or sealing shim is damaged, the safety valve must be replaced completely. To be performed by: Installation company Interval: once per year To check the non-return valve, close the stop valve. If water exits through the open test valve, the non-return valve does not function properly. The operation of the storage tank is effected by the hot water valve of the fitting (mixer tap). Therefore, the storage tank is constantly exposed to line pressure. To protect the interior tank against overpressure during the heating process, the expansion water is let off through the safety valve. To avoid overpressure damage to the water heater, it is very important that calcified safety valves are replaced. In the event of a line pressure drop, the non-return valve prevents the hot water from flowing back into the cold water supply network. In this way, the boiler is protected against heating without water. The stop valve allows the storage tank to be separated from the cold water supply network, shutting out the water and pressure. If required, the storage tank can now be drained through the drain valve. 14 Id.Nr.:

15 13.2 Pressureless connection Electric water heater EKA, EKR, EWH, EKL By using fittings for pressureless connection (overflow mixer taps), it is also possible to make a pressureless connection for a pressure resistant storage tank. In the cold water supply line, no safety valve is required. However, a non-return valve, a stop valve and a drain valve are required! This type of connection is advantageous if only one hot water tapping point is needed. The operation of the storage tank is effected at the fitting (mixer tap) by the hot water valve it acts as a shut-off element in the cold water inlet of the storage tank. This means that the retrieval of hot water from the storage tank works as follows: by opening the hot water valve, cold water is pushed into the storage tank from below, allowing the hot water to exit freely through the upper hot water drain via the overflow mixer tap. The fittings for pressureless connection are built in such a way that the hot water drain always stays open, even if the hot and cold water valves are closed. Therefore, there is always a connection between the storage tank and the outside air. The expansion water produced by the heating procedure can flow out freely through the hot water drain. Where required, the stop valve can be used to separate the storage tank from the cold water supply network. The tank can now be drained through the drain valve. Id.Nr.:

16 Electric water heater EKA, EKR, EWH, EKL 13.3 Connection storage tank with 3 connecting pieces (EKA) The hot water and the cold water sides of the storage tank are connected to a fitting for pressureless connection (overflow mixer tap). Any number of pressure resistant fittings may be supplied from the third connecting piece. At these taps, approximately 1/3 of the content of the storage tank can be consumed as hot water of the same temperature. Renewed filling is required before the rest of the storage tank water is available through the pressureless fitting. To avoid damage, it is necessary to construct the connection of the storage tank with a detachable connection (union). Leaks from the storage tank as a result of an improper connection and damage and consequential damage caused by this are excluded from the guarantee and product liability. 14. Central heating connection (only EKR) The heat exchanger is suitable for connection to a water heater at a pressure of up to bar. A forced circulation with pump is required. If the storage tank is connected to alternating current, the pump can be controlled via the free charge pump contact. The temperature setting of this contact is identical to the temperature level of the two contacts for the fitted electric heater. The bare-tube heat exchanger of the EKR series must be flushed properly before the initial installation is performed. If the bare-tube heat exchanger is not used, the outer tube ends must be sealed to prevent back-cooling. In the event of a combination with boilers or gas fired water heaters, an additional sensor protection tube (clear width 9.5mm) is fitted in the heating flange for insertion of the sensor (to be provided on site capillary tube or electronic sensor). The sensor tube protrudes above the topmost coil of the heat exchanger. If a hot water storage tank with bare-tube heat exchanger is installed, a shut-off element or circulation brake should be fitted in the inflow line to prevent backheating into the heating circuit when the central heating is switched off and electric operation is active. 1 Id.Nr.:

17 Electric water heater EKA, EKR, EWH, EKL However, under no circumstances is it permissible to shut off the inflow line and the return line because this would make it impossible for the water inside the heat exchanger to expand, which could damage the heat exchanger. If the water heater is heated by its heat exchanger, then it must be ensured that in no case the hot water temperature exceeds 85 C, as otherwise the safety temperature limiter of the electric heater can trigger and render it inoperable. 15. Electrical connection 15.1 General information a) As a general rule, the electrical connection must be made in accordance with the wiring diagram glued inside the connection chamber of the storage tank! b) Ensure that the supply voltage is correct! c) Fit an all-pole disconnector with 3mm contact opening width in the electric feeder. Automatic circuit breakers can also be used as disconnectors. d) The connection cable must be fed through the cable screw connection into the connection chamber of the storage tank and protected with a strain relief mechanism against pulling out and twisting. Tanks with heater battery have a second cable entry point for the charge pump control cable. e) For installation and intrusive interventions into the device, the hot water storage tank must first be isolated completely (all poles) and on every side from the power supply in compliance with EN 501 (ÖVE, TAEV). Before carrying out any additional work, the system must be secured against being switched on again (remove the fuses, trigger the mains circuit breaker). Id.Nr.:

18 Electric water heater EKA, EKR, EWH, EKL 15.2 Reconnection possibilities For storage tanks with choice of heating time, the heating elements must be reconnected according to the wiring diagram glued inside the unit. The factory connection corresponds to a heating time of hours in ~ 230 V supply voltage. The three-phase current circuits 3 ~ 400 V, respectively 3 N ~ 400 V, available as an option for 0 litres and above, must also be reconnected according to the following table. EKA, EKR Reconnectable heating times, ratings and fusing current. Bold figures represent the factory connection ( hrs 230V) Heating times at mains voltage Heater clamping* Heating time hrs M 1 S 8 ~230V 3~400V 3N~400V S+M S+S 4 S+M+S 3 1/3 S+M+S wye conn /3 3 1/3 Storage tank content 50l kw A 0,30 2 0,5 0,95 1,30 1,0 Storage tank content 80l kw A 0,85 1,15 1,70 2,00 Storage tank content 0l kw A 1, 1,75 2,20 2,85 1 2,80 Storage tank content 120l kw A 1,35 2,00 2,70 1 3,35 1 3,20 Storage tank content 150l kw A 1,5 2,30 1 3,30 1 3,70 3,95 Storage tank content 200l kw A 2,30 2,95 4,70 5,25 * S = side heater in flange M = middle heater in flange 18 Id.Nr.:

19 EKL Electric water heater EKA, EKR, EWH, EKL Bold figures represent the factory connection ( hrs 230V) Heating times at mains voltage Heater clamping* Heating time hrs S 8 S+M ~230V 3~400V 3N~400V S+S 4 S+M+S 3 1/3 S+M+S wye conn /3 3 1/3 Horizontal storage tank content 80l kw A 1,00 1,5 2,00 2,5 2,0 Horizontal storage tank content 0l kw A 1, 1,75 2,20 2,85 1 2,80 Horizontal storage tank content 120l kw A 1,30 1,95 2,0 1 3,25 1 3, Horizontal storage tank content 150l kw A 1,5 2,30 1 3,30 1 3,70 3,95 Horizontal storage tank content 200l kw A 2, 2,75 1 4,40 4,85 * S = side heater in flange M = middle heater in flange 15.3 Connection diagram EWH L, N...Supply network Connection voltage ~230V l wall-mounted storage tank 8h l wall-mounted storage tank h l wall-mounted storage tank 4h CAUTION! Do not change internal connection! Id.Nr.:

20 Electric water heater EKA, EKR, EWH, EKL 15.4 Connection diagram EKA, EKR, EKL Tubular heater Reconnectable heating ratings in kw Type kw ~230V 3~400V 3N~400V r1 r2 r3 1 hrs. 8 hrs. hrs. 4 hrs. 3 1/3 hrs. 4 hrs. 3 1/3 hrs. 3 1/3 hrs. EKL 080 U 1,00 0,5 1,00 1,00 1,5 2,00 2,5 2,0 EKR 0 U, EKA 0 U, EKL 0 U 1, 0,5 1, 1, 1,75 2,20 2,85 2,80 EKL 120 U 1,30 0,5 1,30 1,30 1,95 2,0 3,25 3, EKR 120 U, EKA 120 U 1,35 0,5 1,35 1,35 2,00 2,70 3,35 3,20 EKR 150 U, EKL 150 U 1,5 0,5 1,5 1,5 2,30 3,30 3,70 3,95 EKL 200 U 2, 0,5 2, 2, 2,75 4,40 4,85 EKR 200 U 2,30 0,5 2,30 2,30 2,95 4,70 5,25 20 Id.Nr.:

21 1. Commissioning Electric water heater EKA, EKR, EWH, EKL Before the device is switched on electrically, the storage tank must be filled with water. The expansion water produced in the interior tank during heating must drip from the safety valve (pressure resistant connection), respectively from the overflow mixer tap (pressureless connection). Caution: First-time heating must be performed and supervised by a licensed professional. The hot water drainpipe and parts of the safety fitting may get hot. After heating, the set temperature and the actual temperature of the retrieved water should be approximately the same. 17. Decommissioning, draining If a water heater is shut down or not used for an extended period of time, it must be emptied and completely disconnected from the electrical power supply. Switch off supply line switch or circuit breakers. In rooms where there is a permanent risk of frost, the water heater has to be emptied before the start of the cold season if the device is not used for several days and if it is not operated in frost protection mode (see page, item ). Once the stop valve in the cold water supply line has been closed, the water is drained through the drain valve of the safety valve combination. Simultaneously, all hot water valves of the connected fittings are opened. Draining is also possible through the safety valve into the expansion water funnel (drip catcher). To do this, the safety valve wheel must be brought to test position. Caution: Hot water may flow out during the draining procedure. If there is a risk of frost, do not forget that not only the water in the water heater and in the hot water lines may freeze, but also in all cold water supply lines to the fittings and to the device itself. Therefore, it makes sense to drain all water-carrying fittings and pipelines (including the heating circuit = bare-tube heat exchanger) all the way back to the frostproofed part of the domestic water system (domestic water connection). If the storage tank is re-commissioned, it is absolutely necessary to ensure that it is filled with water and that bubble-free water comes from the hot water valves. Id.Nr.:

22 Electric water heater EKA, EKR, EWH, EKL 18. Checking, maintenance, care a) During heating, the expansion water must drip visibly from the drain of the safety valve (in case of a pressureless connection, the expansion water drips from the valve of the mixer tap). If the device is fully heated (approximately 85 C), the volume of the expansion water is approximately 3.5% of the content of the storage tank. The function of the safety valve must be checked regularly. When the safety valve check button is lifted or turned to the test position, the water must flow freely from the body of the safety valve into the drain funnel. Caution: The cold water inlet and parts of the storage tank connection fitting may get hot in the process. If the water heater is not heated, no water should drip from the safety valve. If water does drip from the safety valve, either the pressure in the water line is too high (above 5.5 bar: fit a pressure reducing valve), or the safety valve is defective. Please call the installation expert immediately! b) If the water is very hard, a professional must remove the limescale forming inside the interior tank as well as the freely deposited limescale after one to two years of operation. For cleaning, it is necessary to open the flange remove heating flange, clean storage tank, always use a new sealing when refitting the heating flange. Any contact between the specially enamelled interior tank of the water heater and boiler scale dissolver must be avoided do not work with the deliming pump. Scrape off deposited scale with wood and remove with a hoover or wipe with a cloth. Finally, flush the device thoroughly (according to ÖNORM H5195-1) and observe the heating procedure as if the device was first-time commissioned. c) To make a justified claim under the warranty granted by AE-AG, the fitted protective anode must be checked by a professional at max. 2-year intervals. Do not damage or remove the protective current discharge resistor underneath the heater fastening screw during maintenance work. d) Do not use abrasive cleaning agent and no paint thinners (such as nitro, trichlor compounds etc.) to clean the device. It is best to clean the device with a moist cloth, adding a few drops of a household cleaning liquid. 19. Malfunctions If the water in the storage tank is not heated, please check whether the circuit breaker in the distributor (MCB) has tripped or whether the fuse has blown. Also check the setting of the temperature controller. In all other cases, do not attempt to repair the malfunction yourself. Please contact either a licensed installation professional or our customer service. Often, a professional will be able to fix the storage tank in the blink of an eye. When making your call, please always state the type designation and the serial number. You will find it on the rating plate of your electric storage tank. 22 Id.Nr.:

23 Warranty, Guarantee and Product Liability The warranty is granted in accordance with the statutory provisions of the Republic of Austria, as well as of the EU. 1. Prerequisite for the provision of warranty services by Austria AG (hereinafter referred to as AE AG) shall be the presentation of the paid invoice for the purchase of the device for which the warranty service is claimed, whereby the identity of the device with regard to the model and the manufacturing number must be evident from the invoice and must be documented by the claimant. The General Terms and Conditions, Terms and Conditions of Sale and Delivery of AE AG shall apply exclusively. 2. To the extent required by the law, respectively in the Operator s Manual and Installation Instructions, the assembly, erection, connection and commissioning of the unit for which the claim is presented must have been carried out by a licensed electrician or installation firm, duly observing all applicable rules. The tank (without outer shell and plastic outer shell) must be protected from sunshine to avoid discolouring of the PU foam and potential warping of plastic components. 3. The room in which the device is operated must be free of frost. The unit must be mounted in a location that may reasonably be expected, i.e. it must be possible to access and replace the unit without difficulty for the purpose of necessary maintenance, repairs and possible replacement. The costs for any necessary changes to the structural conditions (e.g. doors and passages too narrow) are not governed by the guarantee and warranty declaration and therefore shall be rejected on the part of AE AG. If the water boiler is set up and operated in uncommon locations (e.g. attics, living rooms with water-sensitive floors, store rooms, etc.), the possibility of water leakage must be taken into account and provisions made for collecting and discharging the water leakage in order to prevent secondary damage within the meaning of product liability. 4. The following is not covered by the warranty and guarantee: inappropriate transport, normal wear and tear, intentional or negligent damage, use of force of any kind or description, mechanical damage or damage caused by frost or also by exceeding the operating pressure stated on the rating plate, even if only once, use of connection fittings that do not comply with the standard, use of defective tank connection fittings and unsuitable and defective service fittings. Breaking of glass and plastic components, possible colour differences, damage due to improper use, in particular non-observance of the mounting and operating instructions (Operating and Mounting Instructions), damage by external influence, connecting to incorrect voltage, corrosion damage as a consequence of aggressive waters (water not suitable for drinking) in accordance with the national regulations (e.g. Austrian ordinance on drinking water, TWV Fed. Law Gazette II No. 304/2001), deviations between the actual drinking water temperature at the tank fitting and the specified hot water temperature of up to K (hysteresis of the controller and possible cooling due to pipelines), Insufficient water conductivity (min. 150 µs/cm) operational wear of the magnesium anode (wearing part), natural formation of boiler scale, lack of water, fire, flood, lightning, overvoltage, power failure or other types of force majeure. Use of non-original and company-external components such as e.g. heating elements, reactive anode, thermostat, thermometer, ribbed tube heat exchanger, etc., Parts installed in an uninsulated condition with respect to the storage tank, ingress of foreign particles or electrochemical influences (e.g. mixed installations), failure to observe the design documents, unpunctual and undocumented renewal of the installed protective anode, no or improper cleaning and operation, as well as any deviations from the standard that reduce the value or functionality of the device only slightly. Fundamental compliance with all regulations in ÖNORM B 2531, DIN 1988 (EN 80), DIN 1717, VDI 2035 or the corresponding national regulations and laws must be ensured. 5. In the case of an authorised complaint, this must be reported to the next available customer service location of AE AG. The same reserves the right to decide whether a defect component shall be replaced or repaired or whether a defect device shall be replaced by an equivalent fault-free device. Furthermore, AE AG explicitly reserves the right to request that the rejected device be returned by the buyer.. Repairs under warranty must be performed exclusively by persons authorised to do so by AE AG. Replaced parts shall remain the property of AE AG. If a repair of the hot water heater should be required in connection with necessary service work, the Manufacturer shall invoice these as repair and prorated material costs. 7. Any intervention by third parties without our express instruction, even if performed by a licensed electrician, shall have the effect of voiding the warranty. Costs for repairs carried out by third parties shall be replaced only if AE AG has previously been requested to remove the defect and if AE AG shall have failed to satisfy its obligation to replace the defective item or repair the defect or if it shall have failed to do so within a reasonable period of time.

24 8. Neither the performance of works under warranty or guarantee, nor the performance of service and maintenance works shall renew or extend the term of warranty. 9. Transport damage shall be investigated and possibly accepted only if it is reported to AE AG in writing on the next following workday after delivery at the latest.. Claims over and above the warranty, if legally permissible, in particular claims with respect to compensation of damages and consequential damages, shall be excluded. Prorated labour time for repairs as well as the costs of restoring the original condition of the unit must be paid in full by the buyer. In accordance with this warranty declaration, the warranty shall apply only to repair or replacement of the unit. The provisions of the Terms and Conditions of Sale and Delivery of AE AG shall, unless amended by these Terms and Conditions of Warranty, remain fully in place. 11. Services that are not performed within the scope of these Terms and Conditions of Warranty shall be charged. 12. No claims under warranty shall be considered by AE AG unless full payment for the device has been made to AE AG and unless the claimant has fully satisfied all obligations arising to him vis-à-vis the seller. 13. The enamelled internal boiler for water heaters is warranted for the specified period from the delivery date provided all warranty terms described under Points 1 to 12 are observed with in full. If the warranty terms have not been met, the legal warranty requirements of the respective country from which the appliance was shipped shall prevail. 14. With regard to the assertion of claims pursuant to the Austrian Product Liability Act it must be noted: Potential claims under the title of product liability relating to the regulation of damages due to a defective product (e.g. a human s body is injured, his health is damaged or any corporeal property differing from the product is damaged) shall only be justified if all the prescribed measures and requirements for flawless and normal operation of the unit have been fulfilled. These include e.g. the mandatory and documented anode replacement, the connection to the correct operating voltage, any damage due to improper use must be avoided, etc. These standards are based on the assumption that if all the regulations (standards, assembly and operating instructions, general guidelines, etc.) are observed, the defect in the unit or product causal for occurrence of the secondary damage would not have occurred. It is further imperative that all the documentation necessary for handling of a claim, such as e.g. the type and fabrication number of the unit, the vendor s invoice and the invoice of the licensed electrician or installation firm, as well as a description of the malfunction be provided, as well as the defective unit itself for examination in the lab (absolutely necessary, as the unit will be investigated by an expert and the cause of the defect analysed). In order to exclude any possibility of mistaken identity of the unit during transportation, the unit must be labelled with a clearly legible label (ideally with the end customer s address and signature). Appropriate photographic documentation of the extent of damage, the installation (cold water inflow, hot water outflow, heating inflow and outflow, safety fittings, expansion vessel if applicable), as well as the defective part of the tank is required. AE AG further expressly reserves the right to demand the submission of documentation and units or unit components by the buyer for the purpose of clarification. The damaged party s full burden of proof that the damage was caused by the product of AE AG is prerequisite for the payment of any benefits under the title of product liability. Claims for damages pursuant to the Austrian Product Liability Act are moreover justified only for any amount exceeding the amount of 500 euros (deductible amount). Until all the facts and circumstances as well as the problem causally underlying the defect have been ascertained, any possible fault on the part of AE AG shall be ruled out explicitly. Any non-observance of the operating and assembly instructions as well as the relevant standards shall be deemed negligence and shall result in an exclusion of any liability for damages. The figures and data are not binding and may be amended without notice in the interest of technical improvement. Misprints and technical changes reserved.

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28 Austria AG Austriastraße A-8720 Knittelfeld Telefon: (03512) Fax: (03512) Internet: Austria in your area? For addresses and telephone numbers of our subsidiaries, visit our homepage at Print errors and changes of all kinds are reserved. Reproduction prohibited. Id.Nr.: