Rain central RAIN1-25 EM 2551469

Wilo-RAIN1-25 EM rainwater harvesting system – efficient rainwater utilization

The Wilo-RAIN1-25 EM rainwater harvesting system is a complete system for collecting and utilizing rainwater in homes and smaller facilities. The device automatically draws water from the rainwater tank, and if it is empty, switches to the mains water supply. This ensures a continuous supply of water for various purposes, such as flushing toilets, washing, garden irrigation or surface cleaning. Its compact design and easy installation make it an ideal solution for people who value ecology and savings.

Construction and functionality

The system consists of a self-priming pump, a 10-liter separation tank and a controller providing automatic operation. The pump allows water to be drawn from the tank even from a depth of up to 8 meters, and the device's capacity is a maximum of 5.25 m³/h with a head of up to 49.1 meters. The built-in protection system protects against dry running and motor overload with a power of 0.7 kW (output power 0.5 kW). The device also has a function to signal operation and failures, which makes it easier to monitor its status.

Benefits of use

• Water saving: Using rainwater significantly reduces the consumption of drinking water, which translates into lower bills.

• Ecology: Collecting and using rainwater reduces the load on stormwater drainage and limits water intake from natural resources.

• Convenience: Automatic operation of the system eliminates the need to manually switch between water sources.

• Safety: Protection against dry running and motor overload guarantees reliable operation of the device.

• Hygiene: The system prevents backflow, meeting DIN 1989 and EN 1717 standards, ensuring hygiene of the water used.

• Easy installation: The compact design and various connection options make it easy to install the system in the basement, garage or other utility room.

• Versatility: Possibility of using water for flushing toilets, washing, garden irrigation and cleaning outdoor surfaces.

Technical parameters in practice

The Wilo-RAIN1-25 EM system has been designed with efficiency and durability in mind. The tank material (ABS) and pump body (PP-GF) provide resistance to corrosion and mechanical damage. The impeller made of polypropylene (PP) guarantees quiet operation of the device (up to 59 dB(A)). The pump speed is 2900 1/min, and the nominal voltage range is 230…230 V at a frequency of 50 Hz. The degree of protection IP indicates resistance to the ingress of solids and water – although the specific classification has not been provided in the technical data, the device is adapted to work in conditions typical for utility rooms (ambient temperature from 5 to 40°C). Inlet and outlet connections with a diameter of 1 inch (25 mm) with a cylindrical external gas thread (BSPP) facilitate integration with the existing hydraulic installation. The maximum working pressure is 8 bar.