Water hardness reduction cartridge BWT AQA therm HRC Large 240020583

Protection of the heating installation against scale and loss of efficiency

The BWT AQA therm HRC Large water hardness reduction cartridge is a key component for modern heating systems, operating directly within the supply circuit. Its primary task is to reduce water hardness, which prevents limescale buildup on heat exchangers and in pipes. This ensures the installation maintains high energy efficiency throughout its service life and keeps heating costs stable. The device operates based on a proven ion exchange process – it replaces calcium and magnesium ions (responsible for hardness) with sodium ions, which do not form scale.

Simple integration and operating conditions

Cartridge installation is uncomplicated and does not require the additional installation of a check valve, which accelerates installation work. The device is designed to operate in water temperatures from 4 to 30 °C and in ambient temperatures up to 40 °C. The maximum flow rate is 5 liters per minute, and the permissible working pressure range is from 1 to 6 bar. With an ion exchange capacity of 14 m³ x °d, the cartridge effectively handles larger installations before replacement is necessary. The weight of the cartridge itself is approximately 4.7 kg (without water), facilitating handling during service.

Critical material limitations

Before purchase and installation, the materials used in the given heating installation must be strictly checked. The AQA therm HRC Large cartridge must not be used in systems containing aluminum components. In such cases, sodium ions may accelerate aluminum corrosion. If such components are present in the circuit, it is necessary to use the dedicated AQA therm SRC (salt reduction) cartridge. To ensure full protection against corrosion in descaled water, the use of corrosion inhibitors and heating water conditioning agents in accordance with standards is also recommended.