Rainwater units for an uninterrupted water supply
What is a rainwater unit?
Precisely tailored to your individual application
Even though every rainwater system relies on the same components at its core, yours will have some individual specific requirements. WISY offers you a custom-fit solution for every situation - whether single-family or multi-family homes, commercial or industrial buildings, sports facilities or public facilities.
The right rainwater unit is selected according to the required system pressure, the desired flow rate and the distance and height difference from the cistern to the wall-mounted unit.
WISY offers rainwater units that pump the rainwater directly from the cistern using a submersible pressure pump (Multimat) or with a self-priming pump built into the wall-mounted unit (Sigma). A combination of both for long distances and height differences is also available (Optima and Optima Plus). If a particularly high supply capacity is required, the Maxima rainwater unit is used. Depending on the variant, it can supply up to eight households and is also used in industry and commerce.
Standard-compliant and energy-efficient
All WISY rainwater harvesting units ensure automatic and on-demand top up with tap water, so that an uninterrupted water supply is always guaranteed without your intervention. All top up devices are standard-compliant and therefore fully meet the requirements of codes and standards.
Thanks to the ZETA 02 pump controller which is integrated in all units, they only use 0.2 watts in standby mode, making them 97 % more economical during standby than conventional systems.
Overview of WISY rainwater units
Product information
Multimat rainwater unit
The Multimat rainwater unit uses a submersible pump to pump rainwater out of the storage tank and feeds it under pressure into the rainwater pipe network. It controls the system, checks the fill level of the storage tank and, if necessary, automatically ensures that mains water is fed into the rainwater storage tank.
The Multimat rainwater unit works with two separate cables from the cistern to the wall-mounted unit. This ensures simple installation and long-term operational reliability. Two sockets must be provided on site.
Important details
Product information
Sigma rainwater unit
The fully automatic Sigma rainwater unit supplies a single-family house with rainwater.
It takes rainwater from the cistern and feeds it under pressure into the rainwater pipe network. The unit controls the entire rainwater system, checks the fill level of the storage tank and automatically switches over to the use of mains water if necessary.
Important details
Product information
Optima rainwater unit
The rainwater unit combines all the components required for operation in one unit, pumps the water from the rainwater storage tank and feeds it under pressure into the rainwater pipe network.
The rainwater unit controls the entire rainwater system, checks the fill level of the storage tank and, if necessary, automatically switches over to mains water within the wall-mounted unit.
Important details
Product information
Optima Plus rainwater unit
The OPTIMA PLUS rainwater unit combines all the components required for operation in a single unit. It pumps the rainwater from the rainwater storage tank over long distances and large delivery heads and feeds it into the rainwater pipe network.
It controls the entire rainwater system, checks the fill level of the storage tank and, if necessary, automatically ensures mains water top up within the wall-mounted unit.
Important details
Product information
Maxima rainwater unit
The Maxima rainwater unit ensures a high supply capacity thanks to the large hybrid tank. It combines all components required for the operation of the rainwater supply system according to the two-pressure pump principle.
The rainwater is pumped from the rainwater storage tank into the buffer tank of the hybrid system by the submersible feeder pump in the tank. From the buffer tank the submersible pressure pump supplies the points of use. Mains water is replenished directly into the buffer tank when the rainwater tank is empty. The buffer volume is 350 l for high demand peaks.
Important details
