Wilo-RainSystem AF 150 | Wilo
Your advantages
Wilo-RainSystem AF 150

Your advantages

  • Low-noise due to multistage centrifugal pumps
  • All parts in contact with the fluid are corrosion-free
  • Maximum operational reliability due to fully electronic RainControl Professional controller
  • High economic efficiency due to needs-based fresh water replenishment
  • High reliability, due to flow- and noise-optimised replenishment reservoir
Series description


Automatic rainwater utilisation system with run-down tank and 2 self-priming pumps


Rainwater utilisation in multi-family houses and small trade businesses for saving drinking water in conjunction with cisterns or tanks


Connection-ready module with compact construction, electrical and hydraulic connections already in place, mounted on vibration-insulated painted steel pipe frame, comprising:

  • 2 self-priming, corrosion-free, low-noise MultiCargo MC series centrifugal pumps
  • Pressure-side R 1 1/2 joint tubing including transmitter unit with 8 l diaphragm pressure vessel with flow-through design and shut-off device with drain
  • Pressure gauge 0-10 bar
  • Ball valve on suction and pressure side
  • Large-volume fresh water replenishment reservoir (150 litre) with mechanical float valve
  • RainControl Professional central switchgear with control electronics including solenoid valves, pressure transmitter 4–20 mA and level sensor with 20 m cable for monitoring levels
    • Menu-prompted operation and LCD display of run/fault signals
    • Steady system control by means of cyclical pump cycling and integrated test run on idle pumps
    • Automatic fault-actuated switchover and peak-load operation
    • Automatic water exchange in the replenishment reservoir
    • Automatic prevention of lime deposits on the solenoid valve
    • Permanent display of rainwater storage tank level, system pressure and operating status via LCD



Wilo-AF 150-2 MC 304 EM


Automatic rainwater utilisation and drinking water replenishment system (Aqua Feed)


Nominal content (l) of replenishment reservoir (hybrid tank)


Number of pumps


Non self-priming, horizontal, multistage centrifugal pump of the MultiCargo MP series


Volume flow (m3/h) at optimum efficiency


Number of stages


Single-phase AC motor 1~230 V, 50 Hz

Technical data

  • Suction head max. 8 m
  • Operating pressure max. 8 bar
  • Protection class: IP 41
  • Connections:
    • Pressure pipe/pressure-side joint tubing R 1 ½
    • Suction side 2 x 1/4G 1
    • Inlets R 1 ¼
    • Overflow connection DN 100


  • Pump housing stainless steel 1.4301
  • Impeller made of Noryl
  • Shaft stainless steel 1.4028
  • Mechanical seal made of ceramic/carbon
  • Stage chambers made of Noryl
  • Diaphragm expansion tank, steel, painted


  • Connection-ready double pump water-supply unit as compact module for multi-family houses and public buildings
  • For fully automatic supply of rainwater from an underground tank or rainwater storage tank.
  • High operational reliability through the use of two separately guided suction lines (to be provided on-site).
  • Large-volume replenishment reservoir for needs-based replenishment of drinking water into the consumer network when rainwater storage tank is not full
  • Standard-equipped with connection for back-up warning
  • Flow-through diaphragm pressure vessel in acc. with DIN 4807 for energy-saving with very small building leaks.
  • Consistent system control is achieved through cyclical pump cycling and an integrated test run when the pumps are at rest
  • Automatic fault-actuated switchover and peak-load cut-in guarantee maximum system availability.
  • Drinking water replenishment is fully automatic and demand-optimised
  • Pump-operation-dependent water replacement in the replenishment reservoir is also performed automatically.
  • With integrated electronic motor protection, integrated dry-running protection system for pump unit as well as automatic protection of the solenoid valve against lime deposits
  • Control device displays extensive signals; it is also equipped with potential-free contacts for collective run signals and collective fault signals
  • Operation and parameterisation of the fully electronic RainControl Professional controller is performed by means of menu-driven function keys
  • Permanent display of rainwater storage level, system pressure and operating status via LCD
  • System is ideal for connection to building automation system

Delivery state

  • Two self-priming, MC multistage centrifugal pumps
  • 150 l fresh water replenishment reservoir, transmitter unit with 8 l diaphragm pressure vessel,
  • RainControl Professional central switchgear with control electronics, level sensor
  • With 20 m cable, measurement range 0-5 m.

Installation and operating instructions

WILO-RainSystem AF150

Article Number 2515865
Edition 0309
Page format A4
Number of pages 30
PDF (1 MB)

General overview (Documents)

General overview 2019 International version

Article Number 2200591
Edition 2018
Page format 209.9 x 297.0 mm
Number of pages 74
PDF (40 MB)

General overview 2021 International version

Edition 2020
Page format 209.9 x 297.0 mm
Number of pages 74
PDF (10 MB)

Certificate REACH (Documents)

REACH regulation

Edition 2020-08
Page format 209.9 x 297.0 mm
Number of pages 2
PDF (158 KB)
Product list
Wilo-RainSystem AF 150

Wilo-RainSystem AF 150

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