OPERATION AND INSTALLATION Electronically controlled instantaneous water heater » DEL 18 AU » DEL 27 AU M1 Tmax M2
CONTENTS | SPECIAL INFORMATION SPECIAL INFORMATION OPERATION 1. 1.1 1.2 1.3 General information �����������������������������������������3 Safety instructions ����������������������������������������������� 3 Other symbols in this documentation ����������������������� 3 Units of measurement ������������������������������������������ 3 2. 2.1 2.2 2.3 2.
OPERATION General information 1. 1.2 Other symbols in this documentation Note Notes are bordered by horizontal lines above and below the text. General information is identified by the symbol shown on the left. ff Read these texts carefully. General information The chapter "Operation" is intended for appliance users and qualified contractors. The chapter "Installation" is intended for qualified contractors.
OPERATION Safety 2. Safety 2.1 Intended use This appliance is intended for domestic use. It can be used safely by untrained persons. The appliance can also be used in a non-domestic environment, e.g. in a small business, as long as it is used in the same way. This pressure-tested appliance is suitable for heating domestic hot water or for reheating preheated water. The appliance can supply one or more draw-off points. 2.
4. Settings and displays 4.1 User interface 1 Set temperature setting range 30 - 60 °C (without end-stop) 35 °C ... 43 °C in 0.5 °C increments, other temperature ranges in 1 °C increments 2 Call up preferred temperatures 3 Set the temperature limit Memory keys M1 and M2 can each be assigned a preferred temperature. ff Select a preferred temperature. ff Press one of the M keys for 3 seconds to save the preferred temperature . The temperature is confirmed with 1x flashing.
OPERATION Cleaning, care and maintenance Inlet temperature information If the inlet temperature is higher than the preferred temperature, e.g. if water has been preheated by solar energy, the display alternates between showing "hot" and the measured inlet temperature. The LED scalding risk indicator also flashes. Recommended setting for operation with a thermostatic valve and water preheated by solar energy ff Set the temperature at the appliance to the max. temperature. 4.4 ! 5.
INSTALLATION 8. Appliance description 8.1 Standard delivery If the flow rate is not sufficient to switch on the appliance even when the tap is open, remove the flow limiter and replace it with the plastic profile washer supplied.
INSTALLATION Installation 9.1 ! Installation site 10. Installation Material losses Only install the appliance in rooms free from the risk of frost. 10.1 Standard installation ff Always install the appliance vertically near the draw-off point. The appliance is suitable for undersink and oversink installations.
160 1 26_02_02_0824_ 30 1 Installation aid ff Prepare the power cable. Preparing the water connection Material losses Carry out all water connection and installation work in accordance with regulations. Installing the appliance D0000041720 ! Note ff Install the blue flow limiter (7.5 l/min) as standard. ff Use the brown flow limiter (12 l/min) in the following instances: -- With an increased cold water inlet temperature, e.g. in the case of water preheated by solar energy.
INSTALLATION Installation Lower back panel installation 1 ff Screw the pre-assembled parts with flat gaskets to the cold water and DHW pipes of the appliance. ff Fit the cold water inlet pipe and the DHW outlet pipe from the pipework with flat gaskets to the extensions from the appliance. Making the electrical connection WARNING Electrocution Carry out all electrical connection and installation work in accordance with relevant regulations.
ff When installing connection pipes that are not offset, break off the tabs on the cover guides. ff Click the cover guides into place in the pipe apertures. ff Position the back panel guides on the extensions. Push them together. Then push the guides until they are resting against the back panel. Note This type of connection changes the protection rating of the appliance. ff Change the type plate. Cross out "IP 25" and mark the box "IP 24". Please use a ballpoint pen to do this. 10.
INSTALLATION Installation D0000043291 ff Rotate the wall mounting bracket 180° and mount it on the wall. Use the existing drill holes. Installation with offset tiles 20 2 Damage to the appliance and environment The strainer must be fitted for the appliance to function. ff When replacing the appliance, check that the strainer is present. ff Screw the connection pipes from the appliance with flat gaskets to the tee. ff Open the shut-off valve in the cold water inlet line.
INSTALLATION Commissioning 11.1 Initial start-up Operation with preheated water ENGLISH You can limit the maximum inlet temperature by installing a central thermostatic valve. Anti-scalding protection / temperature limit 60 43 1 D0000040985 2 1 Position 43: Maximum temperature setting 43 °C 2 Position 60: No temperature limit, for temperature setting range, see chapter "Specification / Data table". ff Remove the appliance cover. ff Slide the switch to the required position.
INSTALLATION Shutting down the system 11.2 Recommissioning See chapter "Settings and displays / Following an interruption to the water supply" 12. Shutting down the system ff Isolate all poles of the appliance from the power supply. ff Drain the appliance (see chapter "Maintenance"). 13. Troubleshooting WARNING Electrocution In order to check the appliance it must be connected to the power supply. 13.
INSTALLATION Troubleshooting Indicator options Red Yellow Green ENGLISH 13.2 Indicator options for LED diagnostic traffic light Illuminates in the event of a fault Illuminates during heating mode Flashing: Appliance is supplied with mains power 13.3 Fault table LED diagnostic Fault traffic light No display No hot water. Cause Remedy The fuse/MCB in the fuse box has blown/responded. Inadequate flow rate. The flow sensor (DFE) plug has not been inserted.
INSTALLATION Maintenance 15. Specification 14. Maintenance WARNING Electrocution Before any work on the appliance, disconnect all poles from the power supply. 15.1 Dimensions and connections 225 140 ≤ 20 105 Draining the appliance You can drain the appliance for maintenance work or to protect it from frost. 478 35 b02 30 Cleaning the strainer A strainer is located in the tee from the cold water inlet pipe. In case of contamination, you can remove this strainer and clean it.
15.2 Wiring diagram 85_02_02_0005_ 3/PE ~ 380-415 V 1 Heater 2 High limit safety cut-out 3 Safety pressure limiter 15.3 DHW output DHW output is subject to the mains voltage, the appliance's connected load and the cold water inlet temperature. The rated voltage and rated output can be found on the type plate (see chapter "Troubleshooting"). Connected load in kW 38 °C DHW output in l/min. Rated voltage Cold water inlet temperature 380 V 400 V 415 V 5 °C 10 °C 15 °C 10.1 4.4 5.2 6.3 11.0 4.8 5.6 6.8 12.
INSTALLATION Specification 15.7 Data table DEL 18 AU 233741 Electrical data Rated voltage Rated output Rated current Fuse/MCB rating Phases Frequency Specific resistance ρ15 ≥ (at ϑcold ≤25 °C) Specific conductivity σ15 ≤ (at ϑcold ≤25 °C) Specific resistance ρ15 ≥ (at ϑcold ≤45°C) Specific conductivity σ15 ≤ (at ϑcold ≤45°C) Max. mains impedance at 50Hz Max. mains impedance at 380V / 60Hz Max. mains impedance at 400V / 60Hz Connections Water connection Application limits Max. permissible pressure Max.
Warranty The warranty conditions of our German companies do not apply to appliances acquired outside of Germany. In countries where our subsidiaries sell our products, it is increasingly the case that warranties can only be issued by those subsidiaries. Such warranties are only granted if the subsidiary has issued its own terms of warranty. No other warranty will be granted. We shall not provide any warranty for appliances acquired in countries where we have no subsidiary to sell our products.
WARR$NTY | ENVIRONMENT AND RECYCLING 12.3. The unit has not been operated or maintained in accordance with the Operating and Installation Guide. 12.4. The unit does not bear its original Serial Number or Rating Label. 12.5.
ENGLISH NOTES www.stiebel-eltron.
NOTES 22 | DEL AU www.stiebel-eltron.
ENGLISH NOTES www.stiebel-eltron.
Deutschland STIEBEL ELTRON GmbH & Co. KG Dr.-Stiebel-Straße 33 | 37603 Holzminden Tel. 05531 702-0 | Fax 05531 702-480 info@stiebel-eltron.de www.stiebel-eltron.de Verkauf Tel. 05531 702-110 | Fax 05531 702-95108 | info-center@stiebel-eltron.de Kundendienst Tel. 05531 702-111 | Fax 05531 702-95890 | kundendienst@stiebel-eltron.de Ersatzteilverkauf Tel. 05531 702-120 | Fax 05531 702-95335 | ersatzteile@stiebel-eltron.de Australia STIEBEL ELTRON Australia Pty. Ltd.
