RAIN3
System
Rainwater utilisation via touchscreen.
- Easy installation thanks to its ready-to-plug system and compact design with various hydraulic connection options
- A unique combination of intuitive LCD touch screen operation and a wide range of control functions facilitate convenient operation and easy-to-use settings
- High level of reliability thanks to integrated self-protection routines
- Non-return valve and replenishment reservoir in accordance with DIN 1989 and EN 1717 ensure hygienic safety
- Quiet operation in installations close to living space
- Controls can be conveniently updated by Wilo Service via Wi-Fi
| Product description | Mains connection | Rated power P2 | Gross weight, approx. m | Article number | |
|---|---|---|---|---|---|
RAIN3-24 EM | 1~230 V, 50 Hz | 0.4 kW | 28.5 kg | 2551471 | |
RAIN3-25 EM | 1~230 V, 50 Hz | 0.5 kW | 28.9 kg | 2551472 | |
RAIN3-45 EM | 1~230 V, 50 Hz | 0.8 kW | 30.9 kg | 2551473 |
Recommended services
FAQ
Is the new Wilo-RAIN3 series equivalent to the old one? Are the new products covering the same duty points?
- Wilo-AF Comfort MC304 can be replaced by Wilo-RAIN3-24
- Wilo-AF Comfort MC305 can be replaced by Wilo-RAIN3-25
- Wilo-RAIN3-45 is a new version for higher volume flows in large residential buildings and light commercial
What is the standard scope of delivery?
- Fixation material to hang the system on the wall
- Operating instructions
- 4.20mA level sensor with 20m length cable. 30m cable length version available as accessory
- 2 stickers: ”Do not expose to frost” and ”No drinking water”
Why the overflow funnel is not provided anymore?
The break tank has 2 overflow drains, a flexible hose can be connected directly to the fitting beneath the break tank to drain overflow water towards wastewater. In case of clogging the overflow water can still flow freely through the big opening according to EN1717 standard. The water flooding risk is reduced thanks to this optimised design and the funnel becomes useless.
Wilo-RAIN3 has an overflow switch installed by default to warn the user if an overflow is detected in the break tank.
How often should the system be maintained?
Once a year it is recommended to:
- Check the water tightness of the installation.
- Drain the break tank and clean it.
- Check the float valve filter and clean/replace it.
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Design
Ready-to-plug single-pump rainwater utilisation systemApplication
Rainwater utilisation system is designed for applications that do not require drinking water supply such as:
- Toilets flushing tanks
- Washing machines
- Garden irrigation
(Please check that the application complies with local regulations)
Equipment/function
Ready for connection module with compact construction, consisting of:
- HiMulti 3 P self-priming centrifugal pump, mounted on a base frame with oscillation absorbers
- 11 l replenishment reservoir for fresh water replenishment with float valve
- 3-way valve
- Front and rear cover
- Connection on the discharge side, G 1″ hose
- Connection on the suction side, G 1″ hose
- Connection for municipal water supply network: G ¾″
- 3 m mains connection cable and plug
- 4 … 20 mA filling level sensor with 20 m cable for rainwater level monitoring in the storage tank
- 4 … 20 mA pressure sensor
- Overflow sensor installed in the replenishment reservoir
- Acoustic alarm
- Potential-free contact available for optional external alarm or fault message
- Relay for optional submersible pump (rainwater storage tank pump)
- Electronic control device
- Colour LCD touchscreen
Main functions:
- Fully automatic rainwater utilisation
- Run signals and fault messages
- Logging of the last 10 faults
- Dry-running protection of pump
- Self-priming support
- Automatic water replacement replenishment reservoir
- Permanent display for the fill level in the rainwater storage tank, system pressure on the pressure side, operating status of the control interface
Type key
NO VALUE |
Technical data
- Mains connection: 1~230 V, 50 Hz
- Connection cable: 3 m length
- IP rating: IPX4
- Motor with integrated thermal motor protection probe
- Max. operating pressure: 8 bar
- Triggering pressure: 1.5 bar
- Max. negative suction head: 8 m
- Max. fluid temperature: +5 °C to +30 °C
- Ambient temperature: +5 °C to +40 °C
- 11 l replenishment reservoir volume
- Nominal connection diameters:
- Discharge port: G 1″ thread, union nut
- Suction port: G 1″ thread, union nut
- Connection for municipal water supply network at float valve: G ¾″ (male thread)
Materials
HiMulti 3 P:
- Pump housing in Technopolymer
- Impellers and stage casing made of Noryl 30% GF
- Pump cover and shaft made of stainless steel
- Mechanical seal made of ceramic/carbon
Construction
Ready-to-plug single-pump rainwater-supply unit as compact module for residential and light commercial buildings.
The system fulfils the criteria outlined in DIN 1989 and EN 1717.
All parts that come into contact with the fluid are corrosion resistant.
Scope of delivery
- Ready-to-connect rainwater utilisation system with fixation material
- Installation and operating instructions
- 4 ... 20 mA level sensor
- Sticker ”Do not expose to frost”
- Sticker ”No drinking water”
Options
- Rainwater storage tank pump
- A submersible pump can be installed in the rainwater storage to overcome pressure losses due to suction distance being too great (depending on installation).
- External alarm
- Sensor for overflow or backflow detection