STIEBEL ELTRON DHE 18 User Manual

Vollelektronisch geregelter Komfort-Durchlauferhitzer | Fully electronically controlled
comfort instantaneous water heater | Chauffe-eau instantané confort à régulation
entièrement électronique | Volledig elektronisch geregelde comfort-doorstromer | Plně
elektronicky regulovaný komfortní průtokový ohřívač | Całkowicie elektronicznie regulowany
komfortowy przepływowy ogrzewacz wody |
» DHE 18/21/24
» DHE 27
BEDIENUNG UND INSTALLATION
OPERATION AND INSTALLATION
UTILISATION ET INSTALLATION
BEDIENING EN INSTALLATIE
OBSLUHA A INSTALACE
OBSŁUGA I INSTALACJA
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STIEBEL ELTRON DHE 18 Specifications

General

Type	Instantaneous Water Heater
Power Output	18 kW
Voltage	400 V
Control	Electronic
Protection Class	IP25
Installation	Wall-mounted
Dimensions (H x W x D)	478 x 225 x 105 mm
Phases	3/PE
Frequency	50/60 Hz
Specific water volume at Δt 30 K	8.6 l/min
Specific water volume at Δt 35 K	7.4 l/min
Specific water volume at Δt 25 K	10.3 l/min
Energy efficiency class	A
Application	Domestic

Summary

Product Overview and Model Information

Appliance Identification and Languages

Lists product names in multiple languages and specifies product models DHE 18/21/24 and DHE 27.

Special Information

User and Child Safety Guidelines

Guidelines for safe use by children and persons with reduced capabilities, emphasizing supervision.

Operational Temperature Warnings

Information on high tap temperatures and scalding risks during operation.

Electrical Isolation and Supply Requirements

Details on power supply isolation, voltage matching, and earthing for safe operation.

Operation - General Information

Manual Usage and Target Audience

Clarifies who the 'Special Information' and 'Operation' chapters are for, and who 'Installation' is for.

Understanding Safety Instructions

Explains the meaning of keywords and symbols used in safety instructions.

Operation - General Information (Continued)

Safety Symbols, Keywords, and Other Icons

Explains safety symbols, risk types, keywords (DANGER, WARNING, CAUTION), and other documentation symbols.

Units of Measurement Specification

Specifies that measurements are provided in millimeters unless otherwise indicated.

Operation - Safety

Intended Use of the Appliance

Details the appliance's suitability for domestic hot water and preheated water, and use in non-domestic environments.

General Safety Instructions and Burn Warnings

Provides safety advice regarding high temperatures, scalding risks, and use by vulnerable individuals.

Operation - Appliance Description

Appliance Use Safety and Frost Protection

Covers safety for children and preventing frost damage to the appliance.

Appliance Functionality Overview

Describes how the appliance heats water, temperature control, and electronic features.

Declaration of Conformity Details

Provides information about the EU Declaration of Conformity and where to find the full text.

Operation - Settings and Displays

Heating System Description and Air Detector

Details the heating system and the air detector's role in preventing damage.

User Interface Overview

Identifies and explains the components of the appliance's user interface, including displays and buttons.

Operation - Settings and Displays (Continued)

Display Symbols and Temperature Selection

Explains display symbols and how to select and adjust the water temperature.

Temperature Limit via Anti-Scalding Protection

Describes setting a permanent temperature limit by a qualified contractor for safety.

Operation - Settings and Displays (Continued)

User-Adjustable Temperature Limit and Memory Buttons

Allows users to set temperature limits and save preferred temperatures to memory buttons.

Inlet Temperature Information and Info Menu

Details how inlet temperature is displayed and how to access the info menu for consumption data.

Operation - Settings and Displays (Continued)

Parameter Menu Navigation and ECO Function

Guides on navigating the parameter menu and using the ECO energy-saving function.

Temperature Limit (Tmax) Setting Details

Details the user-adjustable temperature limit and contractor-set limit for anti-scalding.

Operation - Settings and Displays (Continued)

Wellness Shower Programs Explained

Details four different wellness shower programs with specific water temperature and timing sequences.

Operation - Settings and Displays (Continued)

Water Volume Control, Units, and Time Settings

Covers automatic water volume control, unit selections, and time format settings.

Operating Lock and Reset Functions

Explains how to enable/disable the operating lock and reset appliance settings or consumption values.

Operation - Settings and Displays (Continued)

Display Backlighting and Wireless Module Pairing

Allows adjustment of display backlight and details pairing/unpairing wireless remote controls.

Operation - Recommended Settings

Recommended Temperature Settings for Energy Saving

Provides recommended temperature settings for energy saving and specific uses like sinks and showers.

Interruption to Water Supply Procedures

Outlines steps for recommissioning the appliance after an interruption to the water supply.

Operation - Troubleshooting

Troubleshooting Common Appliance Issues

Lists common problems like no power, cold water flow, or inability to set temperature, with causes and remedies.

Contacting Qualified Contractors for Faults

Instructs users to contact a qualified contractor if faults cannot be remedied and to provide serial number.

Installation - Safety

Installation Safety Responsibility and Contractor Use

States that only qualified contractors should perform installation, commissioning, maintenance, and repair.

Shower Operation and Preheated Water Safety

Safety precautions for shower operation and use with preheated water, including temperature limits.

Inlet Temperature, Pressure Limits, and Electrical Safety

Covers inlet temperature limits, pressure, capacitor discharge warning, and general electrical safety.

Installation - Appliance Description

Water Resistivity and Standard Delivery Contents

Details water resistivity requirements and lists all items included in the standard delivery package.

Available Accessory Information

Lists available accessories such as wireless remote controls, fittings, and installation kits.

Installation - Preparation

Pipe Assembly, Load Shedding Relay, and Thermostatic Valve

Describes pipe assemblies, load shedding relay installation, and central thermostatic valve usage.

Installation Site Requirements and Installation Types

Specifies site requirements, frost protection, and suitability for undersink/oversink installations.

Installation - Preparation (Continued)

Minimum Clearance Requirements for Installation

Illustrates and explains the necessary minimum clearances around the appliance for operation and maintenance.

Water Installation Procedures and Fittings

Details flushing water lines, using appropriate pressure taps, and the function of the 3-way ball shut-off valve.

Installation - Installation

Permissible Water Lines and Flow Rate Requirements

Lists approved water line materials and explains the importance of achieving the correct flow rate for activation.

Factory Settings and Standard Installation

Details factory settings for anti-scalding protection and connected load, and shows standard installation options.

Installation - Installation (Continued)

Appliance Opening and Wall Mounting Bracket Installation

Guides on opening the appliance and fitting the wall mounting bracket using an installation template.

Preparing Power Cable and Back Panel Removal

Details preparing the power cable and removing the back panel for installation.

Installation - Installation (Continued)

Installing Nipples, Strainer, and Water Connections

Instructions for installing twin nipples, ensuring the strainer is fitted, and making water connections.

Securing Appliance and Back Panel

Instructions for installing the appliance and securing the back panel with a screw if using flexible pipes.

Installation - Installation (Continued)

Cable Grommet, Back Panel, and Pipe Fitting Procedures

Guides on fitting cable grommets, routing power cables, securing the back panel, and fitting pipe connections.

Installation - Installation (Continued)

Making the Electrical Connection Safely

Emphasizes electrical safety, permanent connection, isolation, and earthing during connection.

Fitting the Lower Back Panel Section

Instructions for fitting the lower back panel section and securing the appliance.

Installation - Commissioning

Internal Anti-Scalding Protection Setup

Explains how to install the jumper for internal anti-scalding protection at the desired temperature.

Commissioning Safety Warnings for Preheated Water

Warns about potential exceeding of temperature limits with preheated water and suggests using a thermostatic valve.

Installation - Commissioning (Continued)

Changing Connected Load and Initial Start-Up

Details changing connected load via jumper and initial start-up procedures like purging air and checking tightness.

Installation - Commissioning (Continued)

Connecting Programming Unit and Appliance Cover

Instructions for connecting the programming unit cable and fitting the appliance cover securely.

Appliance Handover to User and Safety Briefing

Guidelines for explaining appliance functions, potential dangers (scalding), and handing over instructions.

Installation - Appliance Shutdown

Recommissioning After Water Supply Interruption

Steps to recommission the appliance after a water supply interruption to prevent heating system damage.

Appliance Shutdown Procedure and Installation Alternatives Overview

Instructions for safely shutting down the appliance and a summary of installation alternatives.

Installation - Installation Alternatives

Electrical Connection from Above on Unfinished Walls

Detailed steps for electrical connection when the cable entry is from above on unfinished walls.

Installation - Installation Alternatives (Continued)

Electrical Connection from Below and on Finished Walls

Instructions for electrical connection from below with short cable and on finished walls, including IP rating changes.

Installation - Installation Alternatives (Continued)

Connecting Load Shedding Relay and Water Installation on Finished Walls

Instructions for connecting a load shedding relay and performing water installation on finished walls.

Installation - Installation Alternatives (Continued)

Water Installation with Solder or Press Fittings

Instructions for connecting copper or plastic pipes using solder or press fittings.

Installation - Installation Alternatives (Continued)

Lower Back Panel Section Installation with Threaded Fittings

Details the installation of the lower back panel section for threaded fittings on finished walls.

Installation - Installation Alternatives (Continued)

Wall Mounting Bracket Replacement and Offset Tile Installation

Guidance on replacing a wall mounting bracket and installing with offset tiles.

Installation - Installation Alternatives (Continued)

Rotated Appliance Cover and Preheated Water Operation

Instructions for rotating the appliance cover for undersink use and safety for preheated water operation.

Installation - Installation Alternatives (Continued)

Horizontal Installation Considerations and Preparation

Notes on points for horizontal installation, including direct wall mounting and preparing the cover with a condensate drain.

Installation - Service Information

Drilling Holes and Securing Back Panel

Instructions for drilling holes in the appliance cover and securing the back panel.

Service Information - Overview of Key Components

Diagrams and labels for key internal components like the motorised valve, flow sensor, and NTC sensor.

Installation - Troubleshooting

Appliance Cover Retainer and Diagnostic Light Troubleshooting

Shows the cover retainer and explains how to use diagnostic traffic lights for troubleshooting.

Installation - Troubleshooting (Continued)

Diagnostic Traffic Light Fault Diagnosis and Remedies

A table correlating diagnostic light patterns with faults, causes, and remedies for no heat or no DHW.

Installation - Troubleshooting (Continued)

Fault Code Display and Specific Error Codes

Details how to access fault codes (E1, E2, E3) and their associated causes and remedies.

Installation - Maintenance

Maintenance Safety, Draining, and Strainer Cleaning

Covers safety precautions, draining procedures, and cleaning the appliance strainer.

Installation - Specification

Dimensions, Connections, and Alternative Options Diagram

Provides dimensions, connection points, and diagrams for alternative electrical cable entry options.

Installation - Specification (Continued)

Wiring Diagram and Priority Control Wiring

Shows the internal wiring diagram and the wiring for priority control with a load shedding relay.

Installation - Specification (Continued)

DHW Output Tables and Application Areas

Provides tables showing DHW output and details application areas and electrical properties.

Installation - Specification (Continued)

Pressure Drop, Fault Conditions, and Energy Consumption Data

Lists pressure drop for fittings, potential fault conditions, and energy consumption figures.

Installation - Specification (Continued)

Comprehensive Technical Data Table

A table listing electrical data, connections, application limits, and hydraulic data for DHE models.

Installation - Specification (Continued)

Appliance Versions, Dimensions, and Weights

Lists appliance versions, adjustable connected load, IP rating, dimensions, and weights.

Guarantee and Environment

Guarantee Conditions and International Variations

Explains the terms and conditions of the product guarantee, including international variations.

Environment and Recycling Guidelines

Provides guidance on environmentally responsible disposal of the appliance materials.