ELIZ EHT 3.5 Instant Water Heater

Product detailed description

Compact instant water heaters like the ELIZ EHT 3.5 are commonly used in residential and commercial settings where point-of-use hot water is required. These units are typically installed under or over sinks in kitchens and bathrooms. They integrate directly into the plumbing system and are activated by water flow. Installers must ensure proper electrical and hydraulic connections to maintain system efficiency and safety. The EHT 3.5 is suitable for applications where a continuous supply of hot water is needed at a single point of use, such as for handwashing, dishwashing, or small-scale cleaning tasks.

The EHT 3.5 is designed for installation in locations with limited space, such as under a kitchen sink or above a basin. It operates on a hydraulic activation system, meaning it only consumes power when water is flowing through the heater. This ensures energy efficiency and eliminates heat loss from long pipe runs. The unit is compatible with both pressure and non-pressure taps, making it adaptable to various plumbing configurations.

Technical parameters

Type	EHT 3.5
Power	3500 W
Voltage	230 V
Current	16 A
Electrical protection	IP 25
Water connection	3/8 inch
Maximum operating water pressure	1.0 MPa
Minimum operating water pressure	0.1 MPa
Hot water flow rate (Δt=25°C)	2.0 l/min
Hot water flow rate (Δt=35°C)	1.3 l/min
Activation water flow rate	1.3 l/min
Thermal cut-out	Yes
Wall mounting	Yes
Product weight	1.5 kg
Product dimensions	186 x 135 x 87 mm
Warranty	2 years
EAN	8588006687521
Code	ELZ_3277
Brand	ELIZ

The 3500 W power rating ensures rapid heating of water, suitable for a flow rate of up to 2.0 l/min at a 25°C temperature rise. The 230 V supply and 16 A current draw must be matched with appropriate electrical infrastructure. The IP 25 rating indicates protection against solid objects and splashing water, making it suitable for use in wet environments. The operating pressure range of 0.1 to 1.0 MPa ensures compatibility with standard domestic water supplies. The 3/8 inch threaded connection is standard for most plumbing fixtures, simplifying installation.Installation and connection The ELIZ EHT 3.5 is designed for wall mounting and can be installed either under or above a sink. The installation process involves securing the unit to the wall, connecting the water supply using 3/8 inch male threads, and routing the power cable to a 230 V supply. The unit must be positioned to allow for proper drainage and airflow. The hydraulic activation system ensures that the heater only operates when water is flowing, reducing the risk of dry firing. Installers should verify that the water pressure is within the specified range and that the electrical circuit is protected by a 16 A fuse or circuit breaker. Common installation mistakes include incorrect orientation of the unit, improper sealing of the water connections, and failure to allow sufficient clearance for ventilation.Compatibility and accessories The EHT 3.5 is compatible with standard pressure and non-pressure taps, including those with 30 mm outlet spacing. It is supplied with a flow-regulating insert, which helps maintain an optimal flow rate of 2 l/min. This insert is particularly useful in systems with low incoming cold water temperatures. The unit is designed for single-point use and is not suitable for supplying hot water to showers or other high-flow applications. No additional accessories are required for basic installation, but installers may need to provide mounting brackets or sealing materials depending on the site conditions.Technical background for designers The EHT 3.5 operates using a direct heating element that activates when water flows through the unit. The hydraulic switch ensures that the heater only draws power when water is present, preventing damage from dry operation. The unit is constructed from durable materials that can withstand the operating pressure and temperature range. The compact design allows for integration into tight spaces, and the 360° installation flexibility ensures compatibility with various sink and basin configurations. The thermal cut-out provides protection against overheating, and the IP 25 rating ensures safe operation in wet environments. The unit's efficiency is maximized by its point-of-use design, which eliminates heat loss in pipework.Service and operation The EHT 3.5 requires minimal maintenance due to its simple design and robust construction. The thermal cut-out can be manually reset if it trips due to overheating. Regular checks should be performed to ensure that the water connections are secure and that the unit is operating within the specified pressure range. The electrical connections should be inspected for signs of wear or damage, and the power cable should be routed to avoid mechanical stress. The unit is covered by a two-year warranty, which includes protection against manufacturing defects. No scheduled service intervals are required under normal operating conditions.Frequently asked questions

Can the EHT 3.5 be installed above a sink?
Yes, the EHT 3.5 can be mounted above a sink and is compatible with any faucet with 30 mm outlet spacing. The unit is designed for 360° installation flexibility.

Is the EHT 3.5 suitable for use with low-pressure water supplies?
Yes, the EHT 3.5 operates within a pressure range of 0.1 to 1.0 MPa, making it suitable for use with low-pressure water supplies. The hydraulic activation system ensures reliable operation even at low flow rates.

Can the EHT 3.5 be used with a non-pressure faucet?
Yes, the EHT 3.5 is compatible with both pressure and non-pressure faucets. The hydraulic activation system ensures that the heater only operates when water is flowing through the unit.

What is the maximum flow rate of the EHT 3.5?
The EHT 3.5 can deliver up to 2.0 l/min of heated water at a 25°C temperature rise. The flow rate decreases to 1.3 l/min at a 35°C temperature rise due to the increased energy required for higher temperature increases.

Documents for download

• Application PDF