Introducció
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Wilo YONOS PICO 25/1-8 (ROW) circulator pump. Please read this manual thoroughly before installation and operation to ensure proper use and to prevent damage to the product or injury to persons.
The Wilo YONOS PICO 25/1-8 (ROW) is an energy-efficient circulator pump designed for heating and cooling systems.
Producte acabatview

Image: The Wilo YONOS PICO 25/1-8 (ROW) circulator pump, featuring a green pump housing and a grey control unit with a digital display and a green rotary knob for settings adjustment.
The Wilo YONOS PICO 25/1-8 (ROW) is a high-efficiency pump designed for various applications in heating and cooling systems. Its compact design allows for easy integration into existing setups.
Característiques principals:
- Maximum ease of use: Controls intuïtius per a un funcionament senzill.
- Optimised energy efficiency: Achieved through EC engine technology, 0.1 m adjustment, and a power consumption display.
- Quick and easy installation: Designed for convenient setup and replacement.
- Easy maintenance and long running time: Built for durability and minimal upkeep.
- Highest operating safety: Ensures reliable performance through proven technology.
Instruccions de seguretat
Always observe the following safety instructions to prevent personal injury and damage to the pump:
- La instal·lació i el manteniment només els ha de dur a terme personal qualificat.
- Assegureu-vos que el subministrament elèctric estigui desconnectat abans de qualsevol treball d'instal·lació o manteniment.
- Protect the pump from frost and extreme temperatures.
- No feu funcionar la bomba en sec.
- Refer to local regulations and standards for electrical connections.
Configuració i instal·lació
Proper installation is crucial for the optimal performance and longevity of your Wilo YONOS PICO pump. Follow these steps carefully:
- Desembalatge: Carefully remove the pump from its packaging. Inspect for any visible damage.
- Posició de muntatge: Install the pump in a horizontal position with the motor shaft horizontal. Ensure sufficient space for maintenance and ventilation.
- Connexió de canonades: Connect the pump to the heating/cooling system pipes using appropriate fittings. Ensure all connections are watertight.
- Connexió elèctrica:
- Ensure the main power supply is off.
- Connect the pump to a 240V AC power source.
- Follow the wiring diagram provided with the pump or consult a qualified electrician.
- Assegureu-vos una correcta connexió a terra.
- Filling and Venting: After installation, fill the system with water and vent the pump and system thoroughly to remove any trapped air. The pump may have an automatic venting function.
Instruccions de funcionament
The Wilo YONOS PICO 25/1-8 (ROW) is designed for user-friendly operation. The control panel allows for easy adjustment of settings.
Tauler de control acabatview:

Image: Close-up of the control panel on the Wilo YONOS PICO pump, showing the digital display, a central green rotary knob, and various indicator lights and buttons for mode selection and power display.
- Pantalla digital: Shows current power consumption (W) and head (m).
- Pom giratori: Used to select operating modes and adjust settings. Turn to navigate, press to confirm.
- Modes de funcionament: The pump offers various operating modes, typically including constant differential pressure (Δp-c), variable differential pressure (Δp-v), and constant speed. Refer to the symbols on the control panel for specific mode selection.
- Pantalla de consum d'energia: The display indicates the real-time power consumption of the pump, aiding in energy monitoring.
Inici de la bomba:
- Ensure the system is filled and vented.
- Switch on the main power supply to the pump.
- The pump will typically start in a default mode. Use the rotary knob to select your desired operating mode and adjust the required head or speed.
Manteniment
Regular maintenance ensures the long-term reliability and efficiency of your Wilo YONOS PICO pump. Always disconnect power before performing any maintenance.
- Neteja: Keep the pump and its surroundings clean. Avoid using abrasive cleaners.
- Qualitat de l'aigua del sistema: Ensure the heating/cooling system water quality meets manufacturer specifications to prevent corrosion and deposits.
- Aïllament: Check the insulation around the pump and pipes for any damage.
- Comprovació de fuites: Periodically inspect all connections for leaks.
- Inspecció professional: It is recommended to have the pump and system inspected by a qualified technician annually.
Resolució de problemes
This section provides solutions to common issues you might encounter with your Wilo YONOS PICO pump. For problems not listed here, contact qualified service personnel.
| Problema | Causa possible | Solució |
|---|---|---|
| La bomba no arrenca | No power supply; Air in pump; Motor blocked. | Check power connection and circuit breaker; Vent the pump and system; Contact service if motor is blocked. |
| Insufficient flow/heating | Air in system; Incorrect operating mode/setting; System pressure too low. | Vent the system; Adjust operating mode/setting; Check system pressure and refill if necessary. |
| Soroll/vibració inusuals | Air in pump/system; Cavitation; Loose mounting. | Vent the pump/system; Check system pressure; Secure mounting bolts. |
| Codi d'error a la pantalla | Internal fault; Specific system issue. | Note the error code and consult the detailed troubleshooting guide (if available) or contact Wilo service. |
Especificacions
Detailed technical specifications for the Wilo YONOS PICO 25/1-8 (ROW) circulator pump:
| Atribut | Valor |
|---|---|
| Número de model | 4215517 |
| Marca | Wilo |
| Voltage | 240 Volts |
| Wattage | 1.8 watts |
| Pressió màxima | 10 barres |
| Dimensions del producte (L x A x A) | 14.24 x 10.18 x 18 cm |
| Pes de l'article | 2 quilos |
| Color | Verd |
| Tipus de font d'alimentació | AC |
| Mètode de refrigeració | Líquid |
Garantia i Suport
Wilo provides a warranty for its products. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Wilo weblloc.
For technical support, spare parts, or service inquiries, please contact your local Wilo representative or authorized service partner. You can find contact information on the official Wilo weblloc: www.wilo.com
When contacting support, please have your product model number (4215517) and serial number (if applicable) ready.





