ELIZ EL 41 Instant Water Heater

Product detailed description

Direct-flow water heaters like the ELIZ EL 41 are commonly used in residential and small-scale commercial applications where immediate access to hot water is required. Installers often encounter these units in kitchens, bathrooms, or utility rooms of homes, chalets, and social facilities lacking a central hot water system. The ELIZ EL 41 is designed for low-pressure, non-pressurised systems, and requires a dedicated water draw point. It is typically installed above a sink or kitchen basin, where it is connected directly to the cold water supply and controlled via a specially designed valve. The system operates without the need for storage tanks or additional pressure regulation, making it suitable for simple, cost-effective hot water solutions.

It is not intended for simultaneous multiple draws or high-volume applications. The heater must be used with the supplied low-pressure valve assembly, which prevents incorrect operation and ensures safe and efficient performance. The compact size and lightweight design facilitate easy mounting and minimal space requirements. The unit’s sealed heating element reduces the risk of limescale buildup and air bubble issues in the water supply, contributing to long-term reliability and ease of maintenance.

Technical parameters

The 3500 W power rating indicates the maximum energy input for heating water under nominal conditions. The 230 V supply voltage is standard for single-phase domestic systems in most European countries. The IP 24 rating means the unit is protected against solid objects larger than 1 mm and splashing water, making it suitable for indoor use but not for outdoor or high-moisture environments. The 1/2 inch water connection is typical for standard plumbing fittings, and the minimum activation pressure of 2 bar ensures reliable operation once the flow is initiated. The thermal fuse and sealed heating element contribute to the unit’s safety and durability, particularly in areas with hard water or fluctuating water pressure.

Installation and connection

Installation of the ELIZ EL 41 involves securing the unit above the designated draw point using the provided mounting brackets. The water inlet is connected to the cold water supply using a 1/2 inch threaded fitting, and the outlet connects to the low-pressure valve assembly. The electrical supply must be connected to a 230 V circuit with a 16 A fuse, and the cable should be routed away from water contact points. A grounding connection is essential for compliance with electrical safety standards. The unit must be operated exclusively with the supplied low-pressure valve to ensure correct flow control and prevent damage to the internal components.

Common installation errors include incorrect valve orientation, failure to secure the unit properly, or using non-matching valve assemblies. It is important to verify that the water supply meets the minimum activation pressure of 2 bar and that the electrical circuit is correctly sized. The unit should be mounted vertically and positioned so that the cable does not hang freely or create a trip hazard. After installation, a flow test should be performed to confirm that the heater activates and deactivates as expected when the valve is opened and closed.

Compatibility and accessories

The ELIZ EL 41 is specifically designed to work with the included low-pressure valve assembly. This valve must be used for all installations to ensure correct operation and to maintain the unit’s safety features. The heater is compatible with standard domestic water supplies and does not require additional pressure regulation or expansion vessels. No further accessories are required for basic operation, and the unit is delivered with a 110 cm power cable with plug, ready for connection to a standard socket. It is important to ensure that the installation environment is free from excessive moisture and that the electrical supply meets local regulations.

Technical background for designers

The ELIZ EL 41 operates on the principle of direct-flow heating, where water is heated as it passes through the unit. The sealed heating element is designed to resist limescale buildup and air bubble effects, ensuring consistent performance even in areas with hard water. The unit’s thermal fuse and temperature regulation system help prevent overheating and maintain safe operating conditions. The low-pressure design allows for integration into existing plumbing systems without the need for additional pressure boosters or storage tanks. The compact dimensions and lightweight construction make it suitable for installation in tight spaces and limit the impact on overall system layout. Long-term efficiency and service life depend on maintaining proper water pressure, avoiding excessive flow rates, and ensuring regular inspection of the valve and electrical connections.

Service and operation

The ELIZ EL 41 requires minimal maintenance due to its sealed heating element and integrated safety features. Routine checks should include verifying that the water supply pressure remains within the acceptable range and that the valve assembly functions correctly. The indicator light provides visual confirmation of active heating, and any irregularities in operation should prompt further investigation. The unit includes a thermal fuse that can be reset if tripped due to overheating. There are no scheduled service intervals specified in the technical documentation, and the unit is designed for continuous operation under normal conditions. In the event of malfunction, the unit should be disconnected from the power supply and inspected by a qualified technician.

Frequently asked questions

Can the ELIZ EL 41 be connected to a standard cold water supply?
Yes, the ELIZ EL 41 is designed for use with a standard cold water supply, provided the minimum activation pressure of 2 bar is met. It does not require a separate hot water system or pressure booster.

Is the ELIZ EL 41 suitable for simultaneous use at multiple outlets?
No, the ELIZ EL 41 is intended for single-point use only. It cannot support multiple simultaneous draws or high-volume applications due to its low-pressure design.

Can the ELIZ EL 41 be used with a different valve than the one supplied?
No, the ELIZ EL 41 must be used with the supplied low-pressure valve assembly. Using a different valve may compromise the unit’s performance and safety features.

What should I do if the heater stops working during use?
If the heater stops working, disconnect the power supply and check the water pressure and valve operation. The thermal fuse may have tripped due to overheating and can be reset if necessary. If the issue persists, contact a qualified technician for further assistance.

Documents for download

• Technical documentation (PDF)