HOT WATER (LEGIONELLA CONTROL)

The PURION® H series systems have been specially developed for use at water temperatures above 40°C to combat legionella in drinking water systems and swimming pools. These systems work with a special amalgam technology, and the lamps used also achieve their optimum UVC yield in warm and hot water.

Legionnaires' disease or legionellosis is a dangerous form of pneumonia that is often fatal. In the USA alone, 15,000 deaths are thought to be caused by Legionella infection every year. The main route of infection is considered to be inhalation of aerosols containing the pathogen. There is therefore a risk of infection wherever water vapors are generated and a water-air mixture contaminated with bacteria can form. This risk is particularly present in showers, but also at washbasins.

OTHER HAZARD AREAS

Showers in hotels, hospitals, nursing homes
Whirlpools and other swimming pools with bubbling water attractions
Ventilation systems with wet scrubbers
Areas where water is sprayed for cooling and humidifying purposes

PARTICULARLY VULNERABLE RISK GROUPS

Stressed individuals
Travelers
Elderly people
Sick individuals (organ transplant recipients, chemotherapy patients, HIV-infected individuals)
Heavy smokers and people with high alcohol consumption

The operation of low-temperature circuits <60°C for the purpose of saving energy significantly increases the risk of legionella forming. Thermal disinfection of pipes, fittings and water is only possible at temperatures above 60 °C.

The aim is therefore a DVGW-compliant (worksheet W551) procedure to avoid legionella and other biological contamination despite lower temperatures in the hot water circuit:

Temperature reduction in the hot water circuit by 20 degrees to realize energy savings
1 day temperature increase every 2 weeks to ensure thermal disinfection
Installation of a special PURION H UV system (up to max. 90°C) for continuous UV-based disinfection of the hot water in the circuit (installation after boiler in riser)

Model calculations show that with this approach, taking into account all significant costs, potential savings of up to €460 per single-family home and up to €1,190 per multi-family home can currently be realized (see derivation in the document “Savings potential through PURION H systems” in the download).

Amortization calculation:

AMORTIZATION LEGIONELLA DE

All units in the PURION® H series are made of electropolished stainless steel approved for use with drinking water. They are supplied ready to plug in with connection cable and safety plug. The systems are designed for an irradiation dose of 400 J/m². All systems can also be equipped with an operating hours and/or UVC intensity monitor.

A complete PURION installation set is available for all systems.

Further details and dimensions can be found on the corresponding data sheet.

DOWNLOAD PURION® DATA SHEETS FOR INDIVIDUAL SYSTEMS

DATA SHEET PURION 1000 H

DATA SHEET PURION 2500 H

DATA SHEET PURION 2501 H

DATA SHEET PURION 2501 DVGW

DATA SHEET PURION 2501 DVGW CERT ALL-IN-ONE

DOWNLOAD PURION® DATA SHEETS DUAL SYSTEMS

DATA SHEET PURION 2500 DUAL H

DATA SHEET PURION 2501 DUAL H