Cooling water replenishment
The make-up water must also be treated in accordance with the standard VDI 6044. EN 1717 (DIN / ÖNORM / SN) is also applicable here. Our Heaty Complete range enables you to meet all regulations.

Professional replenishment for cooling water
Cooling systems must also always be fed with the right amount of water. This is ensured by our backfeed units for various system sizes.
With our various replenishment stations, it is very easy to treat the make-up water in accordance with VDI 6044. The digital display with simple menu guidance makes it easy to read off all values. When the system pressure drops, the filling combination automatically begins backfeeding the system with demineralised water.
For small systems, we recommend our Heaty Complete Advanced as well as the Heaty Complete Advanced XL. Both products are also available without a filling combination if a system separator is already available on site. Our Heaty Complete Home and Heaty Complete Home XL are also still available.
You are on the safe side with UWS repenishment units
Cooling systems are also used in detached houses and apartment buildings. These systems are also indispensable for industry all year round. If the cooling water is not of the right quality, this will lead to operating faults, efficiency losses and repair work. This will result in corrosion and deposits.
For medium-sized systems, we recommend our Heaty Complete Advanced or our Heaty Complete Home Duplex with 240 l/h filling capacity and a capacity – depending on the hardness of the water – of up to 5400 litres. The installed BA system separator prevents potentially contaminated water from flowing back out of the heating system. A pressure regulator ensures variable adjustment of the filling pressure.
The Heaty Complete Advanced XL enables automated backfeeding. The Heaty Complete Advanced has a digital display that makes it easy to read off values such as the capacity and the charge level of the battery. If the condition of the mixed bed resin becomes critical, an acoustic and visual alarm is triggered.
The product is also available without a filling combination if a system separator is already available on site.
With UWS backfeeding, you’re in the clear
Cooling systems are also indispensable for industry all year round. If the cooling water is not of the right quality, this will lead to operating faults, efficiency losses and repair work. This will result in corrosion and deposits.
We also have solutions for the treatment of make-up water in accordance with VDI 6044 for large systems. Both our Heaty Complete Fix range and the Heaty Complete GLT range ensure consistent water quality in on-site heating systems. An LED indicates the state of depletion of the mixed bed resin.
The Heaty Complete GLT is a replenishment unit with capacity control and output of a message to the BMS. The message is issued in the event of resin depletion or issues with the measuring technology. You can conveniently set the limit value for the conductivity of the water on the display. Both ranges are also available without a filling combination if a system separator is already available on site.
With UWS replenishment units, you’re in the clear
With our replenishment units, you can maintain important parameters such as a pH of 8–10 and conductivity < 100 µs/cm. The Heaty Complete range for large systems enables you to achieve sustainable heating water quality with an innovative full demineralisation cartridge, which also maintains the efficiency of the system. How does it work? It’s simple! By means of controlled backfeeding, whereby an LED or the building management system shows you the depletion level of the resin, making it possible to determine the salt content of the water.