Rainsystem AF 400-2 MP 305 | Wilo
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Rainsystem AF 400-2 MP 305

Technical data
Tender text

Automatic rainwater supply and fresh water replenishment pump as a compact module for commercial and industrial rainwater supply from a ground reservoir or a rainwater storage tank using submersible motor pumps acting as feeding pumps (see the Wilo Drain series) comprising two (to four) absolute low-noise, non-self-priming, multistage, horizontal high-pressure centrifugal pumps. Ball valve and non-return valve on suction and pressure side per pump with joint tubing on the pressure side.

Large-volume hybrid tank (400  l) with needs-based replenishment of drinking water when the rainwater storage tank is not filled. Flow-through diaphragm pressure vessel in accordance with DIN 8 4807 for energy-saving with very small building leaks. All parts that come in contact with the fluid are corrosion-free. RainControl Hybrid electronic control for connection of water supply- and cistern pumps with main switches, control switches for each pump with Manual-0-Automatic function. Even system control by activation/deactivation of the pumps in a cascade, pump cycling and integrated test run when pumps are at rest. Automatic fault-actuated switchover and peak-load cut-in guarantee maximum system availability. System/level control in the low-voltage area, automatic control of feeding pump, integrated electronic motor protection and dry-running protection. Comprehensive signals in the switchgear as well as potential-free contacts for collective running and fault signals. Ideally suited for connection to the building management system (BMS/DDC). Electrically and hydraulically connection-ready; installed on grid pipe frame with anti-corrosive paint, vibration-insulated and height-adjustable.


Extension module, rainwater storage tank fill level indicator, operating hour meter, individual running- und individual fault signals, time switch, 60Hz versions.

Pump control:

Control of rainwater supply- and rainwater storage tank pumps, control via pressure transmitter 4-20 mA and reed contacts. Monitoring of levels in hybrid tanks. Motor protection.

Drinking water replenishment:

DVGW certified solenoid valve R 1 with free drain in accordance with DIN 1988 (make-up funnel and non-splashing intake, integrated on the tank side), rainwater storage tank pump connecting piece Ø 50 (non-splashing intake, integrated on the tank side)

Pump housing Stainless steel
Shaft Stainless steel
Impeller PPE/PS-GF30
Operating data
Min. fluid temperature Tmin 5 °C
Max. fluid temperature Tmax 35 °C
Maximum operating pressure p 10.0 bar
Max. ambient temperature Tmax 40 °C
Motor data
Mains connection 3~400 V, 50 Hz
Rated speed n 2900 1/min
Rated current IN 1.95 A
Power factor cos φ 0.83
Protection class motor IP54
Insulation class F
Installation dimensions
Overflow connection Ø110-PN0
Pipe connection on the suction side DNs Rp 1
Pipe connection on the discharge side DNd Rp 1
Ordering information
Net weight, approx. m 91 kg
Brand Wilo
Product description Rainsystem AF 400-2 MP 305
Article number 2504588

Installation and operating instructions

Wilo-RainSystem AF400

Article Number 2515864
Edition 0309
Page format A4
Number of pages 1
ZIP (3 MB)

Wilo-RainSystem AF400

Article Number 2515864
Edition 0309
Page format A4
Number of pages 25
PDF (1 MB)

Certificate REACH (Documents)

REACH regulation

Edition 2021-10
Page format 209.9 x 297.0 mm
Number of pages 2
PDF (162 KB)


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