Rainwater Units

The WISY rainwater units take water from the cistern and feed it under pressure into the rainwater pipe network. When the toilet is flushed the rainwater unit ensures that more water is added.

It controls the entire rainwater system. It monitors the fill level in the cistern and automatically replenishes it with drinking water if there is insufficient rainfall. This ensures that all consumers are supplied with water at all times.

Multimat
- Pumping water from the storage tank directly to the appliances
- Submersible pressure pump:
  Extremely compact and no pump noise indoors
- Mains water top-up directly into the storage tank
- ZETA 02 pump controller:
  Less than 0.2 watts in standby mode
- For long distances or large height differentials
Sigma
- Compact and economical
- Self-priming suction pump in wall unit for pumping water from rainwater storage tank to appliances
- Mains water top-up in the integral top-up tank
- ZETA 02 pump controller:
  Less than 0.2 watts in standby mode
Optima

Regenwasserwerk Optima von WISY
- Family homes
- Up to 25 m supply line between the storage tank and the rainwater unit
- Up to 65 Litres per Minute
- Efficient Stand-By-Mode
- Rainwater for toilet flushing, washing machine, cleaning and garden irrigation
Optima Plus
- Family homes
- Over 25 m supply line between the storage tank and the rainwater unit
- Efficient Stand-By-Mode
- Rainwater for toilet flushing, washing machine, cleaning and garden irrigation
Maxima
- Automatic switchover between rainwater operation and mains water operation, additional manual switch possible at any time
- System supplied ready to connect, no electrical work required
- Quiet in operation thanks to submersible pumps, no suction problems
- High supply and operational reliability even during periods of peak consumption