The solar drain-units are solar pump stations with a built-in drain-back system. By draining, the solar collectors’ problems with over-temperature and freezing can be avoided.
Safety valve: 3 bar.
Flow indication range: 2 to 12 l/min.
Max. separation volume: 8 litres.
Height:* 3 to 5 m.
No. of Collectors:** 1 to 5.

* Height from the top of the solar collectors to the lowest point of the drain-unit.
**Calculated for a collector capacity of 1.25 litres.