Optima Rainwater Unit

2 ,076.55 2 ,195.55 

  • Pressure stabilized by two pumps: Loading pump in the rainwater storage tank and pressure pump in the wall unit
  • Automatic switchover between rainwater and mains water depending on availability
  • Regulation-compliant mains water top-up with open outlet in the integral top-up tank
  • With ZETA 02 pump controller: Less than 0.2 watts in standby mode

Installation and operating instructions for this product are only available in German or English. You need to understand German or English to install and use this product safely.


The rainwater unit OPTIMA combines all components essential for operation in a single device. Pumps the rainwater out of the storage tank and feeds it under pressure into the rainwater supply circuit. Controls the entire rainwater system, monitors the fill level of the storage tank and automatically tops up with mains water in the wall unit when required.
Supplied ready to connect, complies with DIN EN 1717and DIN 1989.

The scope of supply consists of:

  • Wall unit in the house with:
    • non-self-priming, multi-stage centrifugal pump
    • Pump controller Zeta 02, cut-in pressure 1.5 bar with pressure gauge – Automatic mains water top-up by 9 l top-up tank
    • Cover, wall-mounting bracket
  • Storage tank equipment with:
    • Provedo VX submersible pressure pump with fixed vertical float switch, 20 m connecting cable, 1“ nozzle at discharge end with non-return valve, 3 m lifting strap and hook with screw thread
    • Stainless-steel baseplate 22 cm x 22 cm (8 in. x 8 in.) for submersible pressure pump
    • Stainless-steel floating fine suction filter, mesh size 0.3 mm (0.01 in.), with 0.75 m (2.46 ft.) flexible suction tube
  • Labelling set