Standing AISI 316L stainless steel tank for heating and storing domestic hot water. The indirectly heated tank is suitable for producing domestic hot water. The internal coil (heat exchanger) is a fixed welded smooth tube coil that can be connected to a heater, heated buffer tank, or solar collector system. The lower, larger surface heat exchanger is usually hydraulically connected to a solar collector system, while the upper heat exchanger is usually hydraulically connected to a boiler or high-temperature heating system. The tank body is suitable for connecting a spare electric heating element and a magnesium anode (element and anode not included). The tank has a cleaning flange on which periodic maintenance can be performed.

The insulation is available in several versions:

- Removable soft polyester insulation (F) for 800–2000 liters, with PVC coating on the outside.
- 200–500 liters non-removable, hard closed-cell insulation (R), with ABS coating on the outside.
- 800–2000 liters hard, but removable polyurethane shell insulation (FC), with PVC coating on the outside.

The maximum permissible operating pressure of the tank is 10 bar for up to 1000 liters, 6 bar for 1500-2000 liters. The heat exchangers can be used with a maximum pressure of 12 bar. The maximum operating temperature of the tank under pressure is 95°C, the heat exchanger can be used at 110°C.