Compact sewage lifting unit with integrated pump
Wilo-DrainLift S
Design
Application
Complete sewage lifting unit ready for connection in accordance with DIN EN 12050-1.
For the pumping of raw sewage that cannot be piped to the sewer system through the use of natural inclines. Wilo-DrainLift S meets the requirements of DIN EN 12050-1 and DIN EN 12056. Minimum dimensions, combined with space-optimised installation area enable a wide range of different application options for:
- Retrofitting installation of showers, toilets, saunas, etc.
- Installation of toilets in basement flats
- Expansion/renovation of flats and buildings
- Innovative combination of different installation options for sewage lifting units in a single system, e.g.:
- Direct toilet connection
- Drainage of individual rooms
- Front wall installation/recessed wall installation
Can be used in the following installation types:
As conventional sewage lifting unit for connection of a wall-mounted or stand-alone toilet or for complete room drainage. Due to compact design, system requires only minimum space.
In conjunction with front wall installation/recessed wall installation, used as sewage lifting unit, integrated into commercially available front wall installation systems, in recessed wall installation as well as in pedestal profiles.
Note:
It must be possible to both install and remove the system after laying tiles. Observe installation instructions and accessories.
Type key
Example: | DrainLift S1/5 (1~) |
S1 | Single-pump system |
/5 | Max. delivery head [m] |
(1~) | 1~: Single-phase version 3 ~: Three-phase version |
Special features/product advantages
- Space-saving installation, front-wall installation possible
- Retrospective installation possible for drainage of showers, toilets or other drainage objects
- Easy to install thanks to low weight and high scope of delivery, incl. non-return valve
- Flexible due to free selection of inlets
- Operational reliability, thanks to reliable, pneumatic level recording
Materials
- Motor housing: stainless steel 1.4404 (AISI 316L)
- Hydraulic housing: PE/PUR plastic
- Impeller: PUR plastic
- Tank: PE plastic
Technical data
- Mains connection 1~230 V, 50 Hz or 3~400 V, 50 Hz
- Power consumption P1 from 1.1 to 1.25 kW, depending on type
- Cable length from system to switchgear/plug 4 m
- Operating mode S3-15%, 120 sec
- Fluid temperature max. 35 °C, for short periods up to 60 °C
- Max. ambient temperature of 40 °C
- Free ball passage 40 mm
- Pressure port DN 80
- Inlet connection DN 40 / DN 100
- Ventilation connection DN 70
- Min. suction head (installation level to middle of inlet) 180 mm
- Protection class (without switchgear) IP 67
- Gross tank volume 45 l

Equipment/function
- Ready-to-plug
- Thermal motor monitoring
- Level control with pneumatic pressure transducer
- Potential-free contact
- Pump cable detachable
- Non-return valve
- Inlet seal
- Hole saw for inlet borehole
- Hose connection for ventilation
- Hose connection for diaphragm hand pump
- Fixation material
- Soundproofing material
Description/design
Stainless steel motor
Proven construction in modern INOX & Composite design, including efficiency-optimised vortex impeller.
Carrying handle and fastening strap
Easy handling, reliable standard-compliant installation and fixation (for buoyancy safeguards).
Inlet DN 40
For additional inlets from washbasins, bathtubs, etc.
Freely selectable inlets
Open areas on both lengthways sides and on a facing side provide the widest possible range of connection flexibility (see illustration). Observe the minimum suction head of the drainage fixtures.

Installation beading
For commercially available front-wall installation systems.
Standard sound absorption strips or material
Prevent structure-borne noise transmission.
Tank
Large inspection opening. Inclined collection space for deposit-free, reliable operation. Connection possibility for a DN 70 ventilation pipe and for a diaphragm hand pump
Scope of delivery
Sewage lifting unit ready for connection
- Sewage lifting unit ready for connection with cable and plug
- 1x inlet seal DN 100
- 1x hole saw for inlet connection DN 100
- 1x non-return valve DN 80
- 1x collar for connection of diaphragm hand pump or inlet connection Ø 50 mm
- 1x collar for ventilation connection DN 70
- 3x sound absorption strips for sound insulation installation
- Fixation material
- Installation and operating instructions