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Details the DHCE flow-controlled instantaneous water heater and its heating mechanism.
Provides crucial installation and usage guidelines, including safety and material specifications.
Outlines cleaning procedures and emphasizes maintenance by qualified installers.
Presents specifications like type, pressure, connections, and power ratings for different models.
Lists components and technical details relevant for installer reference.
Stipulates compliance with local regulations and secure electrical installation requirements.
Emphasizes strict adherence to instructions for safety, operation, and installation.
Specifies requirements for installing the unit in a closed, frost-free room vertically.
Guide for explaining unit operation, hazards, and handing over instructions to the user.
This document provides comprehensive instructions for the operation and installation of the DHCE 6/6E/8/8E instantaneous water heater, a pressure-type unit designed for comfort through technology. It is crucial that all installation, commissioning, and servicing of this water heater be performed by approved service technicians, adhering strictly to the guidelines outlined in this manual.
The DHCE instantaneous water heater operates on a flow-controlled principle, heating water as it flows through the unit. The heating power is automatically activated once the minimum flow rate is exceeded, indicated by the "Power" light illuminating. The unit features electronic control over the heat input into the water, allowing users to adjust the desired heat level using a knob on the front cover. Additionally, the outlet temperature can be further controlled at the draw-off point, providing flexibility and precision in water temperature management.
The DHCE water heater offers several user-friendly features designed for convenience and efficiency. The rotary control on the front cover allows for easy adjustment of the water temperature, ranging from a "warm shower" setting to "hot shower" and "bath filling" options. An "E" setting is available for energy-optimized operation, promoting energy savings. The unit is designed for continuous hot water supply, making it suitable for various household needs.
For safety, the unit includes a manual reset thermal cut-out that permanently cuts off power in the event of excessive heating. Should this occur, a qualified technician must be called for service. The "Power" light serves as a clear indicator that the heating system is active.
Maintaining the DHCE water heater is straightforward, primarily involving basic cleaning and periodic checks. For routine cleaning, the housing can be wiped with a damp cloth; abrasive cleaning agents or solvents should not be used. Any maintenance work beyond simple cleaning, such as filter cleaning or internal adjustments, must be performed by a qualified installer to ensure safety and proper functioning.
The unit incorporates a filter and seal at the cold water inlet, which may require cleaning if the water flow is reduced or if the water is not hot enough. The manual provides detailed steps for disconnecting the union nut, removing the washer and filter, cleaning them, and reassembling them in reverse order. This procedure should only be carried out after isolating the unit from the mains and shutting off the water connection.
In case of operational issues, the manual includes a fault elimination guide for the user. This guide helps identify common problems such as no hot water or insufficient hot water, and suggests rectifications like cleaning the shower head, increasing flow volume, turning on the circuit breaker, or resetting the thermal cut-out. For more complex issues, or if the problem persists, it is advised to contact a qualified technician.
The DHCE is designed for installation in a closed, frost-free room, and must be installed vertically on a wall with the hot water connection downwards. Proper installation, including secure electrical connections and earthing, is critical for the unit's safe and efficient operation. The cable seal must be used to protect against water penetration.
The unit's design, including features like the "Test," "Trip," and "Reset" buttons (if the ELSD option is present), facilitates diagnostic checks and troubleshooting by qualified personnel. The internal components, such as the heating element, electronic control set, flow switch, triac set, and thermal cut-out, are accessible for servicing by technicians. The unit is also equipped with a leakage current sensor (if optioned) for enhanced safety.
Adherence to local power and water supply company regulations, as well as the technical data provided in the manual, is essential for the proper installation and long-term performance of the DHCE water heater. The device must be capable of being isolated from the mains with an isolating distance of at least 3 mm in all poles.
General| Type | Instantaneous Water Heater |
|---|---|
| Power Rating | 6 kW |
| Voltage | 230 V |
| Temperature Range | 30 - 60 °C |
| Amperage | 26 A |
| Phase | Single Phase |
| Temperature Control | Electronic |
| Protection Class | IP25 |
| Maximum Flow Rate | 3.5 l/min |
| Water Connection | 1/2 inch |
