TESY IWH 70 X02 BAH flow water heater

Product detailed description

This compact low-pressure electric flow water heater is commonly used in residential or commercial settings where a dedicated hot water supply is required at a single point of use. Installers often find it suitable for bathrooms, utility rooms, or in compact living spaces such as cabins, extensions or semi-detached properties. It integrates into standard electrical and plumbing systems and is particularly useful in scenarios where central heating or storage water heaters are impractical. The unit operates directly from the mains supply and heats water on demand, eliminating heat losses associated with storage systems.

Its design allows for straightforward mounting and connection, making it a preferred solution for plumbers and electricians working on point-of-use hot water installations. The unit supports multiple flow modes via the integrated showerhead and includes safety features such as overheat protection and visual heating indicators. Due to its low-pressure operation, it does not require additional pressure regulation, simplifying system integration.

Technical parameters

Installation	low-pressure
Power	7000 W
Constant flow for DHW at dT 25°C	4.0 L/MIN
Load profile	XS
Energy class ERP	A
Voltage	230 V
Heating	40 A
Height	200 mm
Width	130 mm
Depth with bracket	76 mm
Warranty	2 years
Electrical protection	24 IP
Net weight	1.85 kg
Annual electricity consumption (AEC)	467 kWh/year
EAN	3800879115945
Code	301662
Brand	TESY

The 7000 W power rating indicates the maximum thermal output for heating water on demand. The flow rate of 4.0 L/min at a temperature difference of 25°C is suitable for typical single-point applications such as showers or hand basins. The low-pressure design ensures compatibility with standard household water supplies without the need for boosting. The A energy rating reflects its efficiency in annual energy consumption, which is relevant for compliance with building regulations and energy standards.

Installation and connection

The installation process involves securing the unit to a wall using the supplied mounting kit and connecting the water inlet and outlet with appropriate pipe fittings. The electrical connection requires a 230 V supply with a dedicated circuit protected by a 40 A fuse. It is essential to ensure the water supply is free from excessive impurities or sediment, as these can affect performance and longevity. The inlet and outlet connections should be checked for tightness after installation to prevent leaks. A common mistake during installation is neglecting to verify the correct polarity of the electrical supply or failing to ground the unit properly, which could pose a safety risk.

Compatibility and accessories

The TESY IWH 70 X02 BAH is compatible with standard low-pressure water systems and can be paired with a range of showerheads or mixing valves for single-point use. The included mounting kit allows for secure wall fixation. Additional components such as extension cables or custom showerheads may be required depending on the installation layout. No specific alternative or related products are listed for this model.

Technical background for designers

The operating principle relies on direct electrical resistance heating, where cold water passes through a heating element that raises its temperature instantly. The compact size and low-pressure design make it suitable for integration into existing plumbing layouts without requiring major modifications. The unit’s housing is constructed from durable materials that resist corrosion and maintain structural integrity under normal operating conditions. Key factors affecting service life include water quality, frequency of use, and adherence to recommended maintenance practices. The inclusion of a built-in thermostat and overheat protection enhances reliability and user safety.

Service and operation

Routine checks should include verifying the integrity of electrical connections, inspecting for signs of corrosion or wear on the housing, and ensuring the water flow remains unobstructed. The unit does not require regular servicing beyond these basic checks. If the visual heating indicator fails to function correctly or the water output becomes inconsistent, the unit should be disconnected and inspected by a qualified technician. No specific service intervals are provided in the brief.

Frequently asked questions

Can the TESY IWH 70 X02 BAH be connected to a standard domestic water supply?
Yes, it is designed for low-pressure operation and is compatible with standard household water systems without the need for pressure boosting.

Is the unit suitable for use with a thermostatic mixing valve?
It can be used in conjunction with a thermostatic mixing valve, provided the valve is compatible with low-pressure water systems and the flow rate requirements are met.

Can the unit be installed in a location with limited space?
Yes, due to its compact dimensions (200 mm height, 130 mm width), it is suitable for installation in small spaces such as bathrooms or utility rooms.

Does the unit require a dedicated electrical circuit?
Yes, it requires a 230 V supply with a dedicated circuit protected by a 40 A fuse to ensure safe and stable operation.

Documents for download

• Dokument na stiahnutie (PDF)
• Dokument na stiahnutie (PDF)
• Dokument na stiahnutie (PDF)