Installation and Operation Guide for Sanela SLW 02N Automatic Toilet Flusher
A comprehensive guide for the Sanela SLW 02N automatic toilet flusher. Includes installation steps, wiring instructions, parameter settings, and maintenance advice for the SLR 21 system.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
The Sanela SLW 02N is an automatic toilet flushing unit designed for the SLR 21 installation system. Crucial: The unit must be connected to a constant 24V DC power supply. Do not connect the power supply behind a light switch, as the unit requires constant voltage for proper operation. Ensure water pressure is between 0.1 and 0.6 MPa and the sieve dimension is ≤ 90 µm.
Device Description
The SLW 02N is a stainless steel automatic flushing unit. It features an infrared sensor for automatic flushing and a manual flush button. It is compatible with the SLR 21 mounting frame for wall-hung toilets.
Installation
Before installation, ensure you have read the safety instructions. The installation process involves mounting the unit into the SLR 21 frame and connecting the power supply.



- Ensure the installation frame SLR 21 is correctly positioned.
- Follow the mounting sequence provided in the manual (steps 1-16).
- Connect the 24V DC power supply. Warning: The power supply must be constant. Do not connect it to a switched lighting circuit.
- Verify all electrical connections are secure and protected.
Operation and Settings
The unit operates automatically via an infrared sensor. Flush parameters can be adjusted using the SLD 03 remote control.

- Flush Logic: The system distinguishes between short and long flushes based on the duration of presence.
- Factory Settings: The unit comes with pre-configured flush times (e.g., 2s for short flush, 5s for long flush).
- Adjustments: Use the SLD 03 remote control to adjust sensor range and flush duration parameters.
Maintenance
Regular maintenance is recommended to ensure the longevity and proper function of the flushing unit. Refer to the official Sanela maintenance manual available at www.sanela.cz/servis-ke-stazeni for detailed procedures.
Accessories
The following accessories are recommended for use with the SLW 02N:
- SLD 03: Remote control for adjusting infrared sensor parameters.
- Power Supplies: Various 24V DC power supplies are available (SLZ 01Y, SLZ 01Z, SLZ 04Y, SLZ 04Z, SLZ 04X) depending on the number of flushing units being powered.
Official resources from the manual
Manufacturer information
SANELA spol. s r. o.
Practical help
Common problems
Verify that the unit is connected to a constant 24V DC power supply and not a switched circuit.
Use the SLD 03 remote control to adjust the flush time parameters.
Check the sensor range settings using the SLD 03 remote control.
Before use
- Ensure a constant 24V DC power supply is available.
- Verify water pressure is between 0.1 and 0.6 MPa.
- Check that the sieve dimension is ≤ 90 µm.
- Ensure the SLR 21 installation frame is properly installed.
- Read all safety instructions before beginning installation.
Images and diagrams
- Page 1: Illustrates the automatic flush logic (short vs. long flush).
- Page 3: Step-by-step mounting sequence for the unit.
- Page 4: Wiring diagram for the 24V DC power connection.
Model compatibility
- Compatible with SLR 21 installation system.
- Requires 24V DC power supply.
- Do not connect power supply to a switched light circuit.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.