How to install

For an optimal experience, the distance between your boiler and shower is limited. The maximal distance depends on the diameter of the pipes. The volume of the water in the pipes should be lower than 10 liters (= storage volume), for the Therm-eau technology to provide instant hot water at the start.

For typical pipes (Copper 22/1 or Alpex 25/2.5), the maximum distance is 30 m. For other types of pipes, please check the specific pipe table.

A quick way to measure this volume of water in your hot water pipe is to open the tap at maximal temperature and measure the volume of cold water that comes out before the hot water. If you fill less than a full bucket of 10 liters, you’re good to go for this generation of Heau systems! If you fill more than 10 liters with cold water before the hot water kicks in, please contact us for a custom solution.

For optimal performance of the Therm-eau technology, we recommend setting a minimum temperature of 55°C of the incoming hot water. Higher temperatures will even further increase storage duration.

Regulations and Guidelines

• We emphasize maintaining a minimum hot water temperature of 55°C, in accordance with NEN1006. For lower temperatures, your hot water circuit is not according to regulations and can cause issues within the entire circuit.

Temperature Stability

• The hot water in the Therm-eau reservoir loses +/- 5°C per 24h at an ambient temperature of 20°C, retaining sufficient heat for at least 3 days. When the water temperature drops to 42°C, the heating element is activated to reheat the water.

Energy Storage

• Higher incoming water temperatures from the boiler enable greater energy storage capacity. This means longer periods of passive use (no electricity) before the heating element is activated.

  For example, with incoming hot water at 65°C, you can enjoy up to 4 days of stored energy, still providing comfortably hot water at the start of your shower without using electricity.

  When the water temperature drops below 42°C, the heating element automatically reactivates, ensuring you always have instant hot water whenever you need it.

Each time you shower, the advanced Therm-eau technology captures and stores heat for your next session.
For optimal passive performance, we recommend a minimum shower duration of 2 minutes. This allows the system to efficiently store sufficient energy for subsequent showers, without using electricity.

In a hurry? No problem. The integrated heating element guarantees instant hot water, anytime, in any situation.