Hygiene memory without solar register with a insulation

Heating water buffer tank with domestic hot water heating WGJ-BN INOX

Structure and intended use

The WGJ-BN INOX combines a buffer tank for heating water with an integrated domestic hot water heater. Inside, a stainless steel corrugated pipe acts as a heat exchanger, providing a large contact surface for fast and efficient heat exchange and enabling instantaneous water heating. The maximum operating pressure of the tank is 0.3 MPa.

The housing is made of black sheet steel, the thermal insulation is provided by 100 mm foamed, removable polystyrene foamA laminate sheath protects the insulation. If necessary, ELEKTROMET EJK 1500 ÷ 9000 electric cartridge heaters can be used to heat the boiler water.

Features and Benefits

The combination of buffer tank and stainless steel corrugated pipe enables continuous and space-saving hot water production without the need for an additional storage tank. The large surface area of ​​the corrugated pipe achieves high heat transfer rates and short heat-up times.

The storage tank is suitable for integration into central heating systems such as boilers or heat pumps and offers additional flexibility in heat provision thanks to optional electric heating cartridges.

Safety measures and installation requirements

The storage tank may only be operated in closed heating systems with a functioning safety valve. A safety valve with an opening pressure of no more than 0.3 MPa must be installed on the heating water return line; this valve should be installed according to the markings on the housing. No shut-off valves may be installed between the safety valve and the storage tank.

A safety valve with a nominal opening pressure of 0.67 MPa (6.7 bar) must be installed on the cold water inlet to the stainless steel pipe. Temporary leakage of water from the safety valve may occur even during normal operation and is an indication of its proper functioning. The outlet opening must never be blocked or obstructed.

Recommended filters and protective measures

To increase the service life of the storage tank and the functionality of the safety valve, the manufacturer recommends the use of mechanical filter systems (e.g., wound filters) on the cold water inlet directly upstream of the safety valve. These filters remove solid contaminants such as sand, corrosion particles, or sludge.

Maintenance and operation

The functionality of the safety valve must be checked at least once a month and always before restarting the storage tank after decommissioning. Operating the storage tank without safety valves or with defective safety valves is prohibited and dangerous.

Repairs to storage tanks and water installations may only be carried out by qualified personnel with the appropriate licenses. The installation and operation of filter and safety components must be carried out in accordance with the respective manufacturer's instructions.

Installation of a heating cartridge

During the warranty period, only electric cartridge heaters with insulated heating elements may be used to avoid voiding the warranty. ELEKTROMET's EJK type cartridge heaters meet this requirement and are intended for use.

The heating cartridge must be installed in accordance with the respective heating cartridge's installation and operating instructions. Work on electrical components should be performed by qualified personnel.

Technical data

Scope of delivery

• Hygiene storage 800 or 1.000 liters
• 100 mm A insulation (2 half shells removable)
• Assembly & Operating instructions