With Danfoss systems you never need to worry about legionella or insufficient or cold water in the bathrooms. Our domestic hot water solutions include water heaters that can be connected to multiple tanks as well as storage and charge systems, hot water valves that prevent legionella, temperature controllers and self-limiting heating cables that are used for temperature maintenance. When used together, these combine the demand for high performance, comfort, hygiene and resource efficient operation – even during peak loads.
Production of hot water
Production of hot water is done by one of our water heaters. These can be equipped with one or more storage tanks to provide enough hot water at peak loads. They can also be equipped with a storage charging principle. They meet hygienic, safety and temperature requirements and can be connected to different energy sources. Adding hot water valves and temperature controllers help prevent legionella. All together a high performance, comfortable, hygienic and resource efficient production of DHW is achieved.
Distribution of hot water
The hot water is then distributed to the water tap points. In most cases the size of the building requires a series of risers circulating the hot water. Our Thermal balancing valves ensure the proper hydronic balance that avoids long waiting times. As these control the water temperature they also avoid too hot water causing lime, corrosion and energy inefficiency. Normally these valves are set to a temperature that avoids legionella to grow.
Smart and energy efficient legionella risk reduction
The thermal balancing valves can be equipped with thermostatic or electronic disinfection modules, allowing periodic flushing of the system to kill the legionella bacteria. The electronic temperature registration system monitors all the temperatures and initiates the safe and energy efficient disinfection cycle. It also stores the temperature data for logging purposes. The electronic controller can be easy accessed on mobile devices using Wi-Fi or be integrated into Building Management Systems (BMS) for remote control, monitoring and alarm purposes.
Close to the water tap points, there is sometimes a need to lower the hot water temperature. Our hot water mixing valves ensure the outlet water temperature is safe for consumption.
Self-limiting heating cables provide power only where needed adapting output according to the ambient temperature. It helps to reduce water waste as you can get hot water immediately providing appropriate disinfection to suppress the Legionella bacteria.
How to balance domestic hot water systems?
What are the issues and challenges in domestic hot water systems in non-residential buildings?See why hydronic balancing is important, what type of balancing is the best and how that can solve the issues.
How we can help you
One partner with high DHW expertise
High performance and energy efficiency
Resource efficient operation
Reduced risk of legionella contamination
Lowest possible operating costs
Thermal balancing valves
Thermal balancing valves provide a dynamic, temperature based, balancing solution for domestic hot water applications. The valves optimize the temperatures in DHW systems having constant hot water circulation. As result heat losses and risk of legionella are significantly reduced.
Self-acting temperature controllers
Thermostatic temperature controllers are used to control the flow temperature in instantaneous/storage domestic hot water and heating systems. In multi-family houses and commercial buildings, they are used for hot water systems and for return temperature limitation in district heating applications.
Denmark's new climate-friendly hospitality giant depends on Turbocor® oil-free chiller
The new Alsik hotel in Southern Denmark sets a higher standard in energy-efficiency and is built to reach 76% CO₂-neutrality. A main contributor is the 900-kW chillers by Clint (a company of G.I. Industrial Holding) which features award-winning Danfoss Turbocor oil-free compressors.
Heating facility reconstruction in Kopaonik mountain resort, Serbia
Application: Hydronic balance, control and monitoring of a heating system
Challenge: Improve the energy efficiency of old heating system
Solution: Danfoss installed motorized control valves, hydronic balancing valves and electronic controllers with monitoring software
High-end climate solutions in Waldorf Astoria by Hilton, Amsterdam, the Netherlands
Application: Hydronic balancing and control for radiator heating and fan coil cooling
Challenge: Establish top level comfort and minimum energy consumption for heating and cooling
Solution: Fan-coil units for cooling; 8 heating risers and radiators equipped with Danfoss products.
Radiator thermostats for the only 7-star hotel in the world, Morgan Plaza, China
The Beijing Olympics began on the 8th of August 2008, but the preparation went on for years. That included the building of the so far only fourth 7-star hotel in the world – ‘The Beijing 7-stars Morgan Plaza'.
Construction of Morgan Plaza began in 2002 and finished just in time for the Beijing Olympics.
Savings on energy costs in Sunway resort, Kuala Lumpur, Malaysia
Application: Hydronic balancing and control of water-based cooling system
Challenge: Proof effectiveness of PIBCV valves
Solution: Comparison test with Hydronic analyzer between traditional and PIBCV balancing and control options
Legionella prevention, the smart way24 September 2018
For many years Danfoss has played an important role to establish safe Domestic Hot Water systems in hospitals, hotels, multi-family apartments and other buildings. Now our MTCV thermal balancing valves and new CCR2+ electronic controller for automatic disinfection have been significantly improved to your benefit.