This system heats utility water via a fresh water station which operates in a continuous flow process.
In A17, the auxiliary heating heats the tank and, via the return boost, the heating loop; in A18, it only heats the tank, as there is no return increase.
Heating can additionally be incorporated into the system. The system A 17.1 has an external heat exchanger on the solar part, instead of a direct coil. The solar heating is supported by a return boost control as in A17.
System
| # | Hydronic Connections / Components | A17 | A17.1 | A18 |
|---|---|---|---|---|
| 1 | 1 or 2 collector loops | x | x | x |
| 2 | Bivalent buffer tank | x | x | x |
| 3 | Internal heat exchanger in the buffer tank | x | x | |
| 4 | External, solar heat exchanger | x | ||
| 5 | Auxiliary Heating | x | x | x |
| 6 | Return boost | x | x | |
| 7 | Heating Loop | x | x | x |
| 8 | Fresh water station | x | x | x |
The Fresh water station provides Trinkwarmwasser (TWW) with the needed Solltemperatur and Menge through the regulated discharge of the buffer tank, quickly available.
- Pumpe = Pump
- Temperaturfühler = Temperature sensor