OPTIMA Rainwater Plant

WISY’s compact comfort rainwater module combines the advantages of a non-suction technique with a potable water feed on demand in the house, in one package.

Long suction distances of 12 m (39.37 ft.) head and 40 m (131.23 ft.) length can be covered, due to the inclusion of the submersible loading pump in the rainwater collection tank. The loading pump feeds rainwater to the in-house wall-mounted unit.
The integrated multistage rotary pump inside the wall-mounted unit then distributes the water pressurised to the individual points of consumption.

For exceptionally long distances between the outside rainwater storage tank and the in-house rainwater supply module, the OPTIMA Plus Rainwater Plant with multistage submersible loading pump is available.

The Optima Rainwater Plant furthermore controls the water level inside the rainwater collection tank and provides an automatic and highly dependable potable water feed during prolonged dry periods.

Plug-in equipment for easy on-site commissioning.
Meets high security standards DIN 1989 and DIN EN 1717.


  • delivered as a plug-in-unit, no electric installations necessary
  • high supply safety with loading pump, no suction pipe problems
  • pressurised rainwater supply with integrated pressure pump
  • long distances between storage tank and wall mounted unit possible
  • manual switching from rainwater supply to potable water feed possible
  • innovative basic hydro-mechanical technique
  • cost- & energy-efficient operation, high quality
  • space saving compact construction

includes ZETA 02 Pressure Switch

White Bay House Whitegate Co. Cork, Ireland
T: +353 (0)21 - 4 66 11 22
F: +353 (0)21 - 4 66 11 12
GEMGATE LTD. Online Shop
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