1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Wilo Stratos PICO plus high-efficiency heating circulation pump. Please read these instructions carefully before installation and initial operation. Keep this manual for future reference.
The Wilo Stratos PICO plus is designed as a circulation pump for hot water heating systems and various climate control applications. It features advanced technology for energy efficiency and ease of use.
2. Safety Information
Always observe the following safety instructions to prevent personal injury and damage to the equipment:
- Installation and maintenance must only be carried out by qualified personnel in accordance with local regulations and standards.
- Ensure the power supply is disconnected before any installation or maintenance work.
- The pump operates with electrical voltage. Avoid contact with live parts.
- Do not operate the pump if it is damaged or if the electrical cable is faulty.
- Protect the pump from frost.
- Wear appropriate personal protective equipment (PPE) during installation and maintenance.
3. Setup and Installation
The Wilo Stratos PICO plus pump is designed for comfortable replacement and compact installation. It features a Wilo Connector for quick and tool-free electrical wiring.
3.1 Mounting the Pump
Mount the pump in the heating system piping. Ensure the flow direction arrow on the pump housing matches the system's flow direction. The pump can be installed horizontally or vertically, but the motor shaft must always be horizontal.

Figure 1: Wilo Stratos PICO plus pump installed in a typical heating system setup, showing its compact integration with existing pipes and gauges.

Figure 2: Two Wilo Stratos PICO plus pumps integrated into a larger heating system, demonstrating their versatility and ease of installation in various configurations.
3.2 Electrical Connection
The Wilo Connector simplifies electrical wiring. Ensure the power supply matches the pump's specifications (230 Volts). Connect the pump to a properly grounded electrical circuit.

Figure 3: Close-up view of the Wilo Stratos PICO plus pump, highlighting the Wilo Connector for electrical wiring and the insulation shell.
The pump comes with an insulation shell (Dämmschale) included in the scope of delivery to minimize heat loss.
4. Operating Instructions
The Wilo Stratos PICO plus features an intuitive LC display and precise setting options for optimal performance.
4.1 LC Display and Controls
The large LC display shows current power consumption, cumulative kWh, and volume flow. Functions and modes are displayed on the LC display and activated directly via the green button technology.

Figure 4: Detailed view of the Wilo Stratos PICO plus LC display, showing various operational parameters and settings, including power consumption and volume flow.

Figure 5: Close-up of the Wilo Stratos PICO plus LC display, providing a clear view of the digital readouts for power (W), volume flow (m³/h), and cumulative energy consumption (kWh).
4.2 Operating Modes and Functions
- Optimized Dynamic Adapt Function: Automatically adjusts pump performance to the system's requirements, ensuring energy efficiency.
- Manual De-aeration Routine: Helps to remove air from the pump and system, preventing noise and ensuring proper operation.
- Automatic Deblocking Function: Prevents the pump from seizing up after long periods of inactivity.
Refer to the on-screen menu for detailed navigation and setting adjustments using the green control button.
5. Maintenance
The Wilo Stratos PICO plus is designed for low maintenance. Regular checks can help ensure its longevity and efficient operation.
- Visual Inspection: Periodically check the pump for any signs of leaks, corrosion, or damage.
- System Pressure: Ensure the heating system pressure is within the recommended range.
- Air Removal: Utilize the manual de-aeration routine if you notice gurgling noises or reduced heating performance.
- Cleaning: Keep the exterior of the pump clean and free from dust and debris.
For any complex maintenance or repairs, contact a qualified service technician.
6. Troubleshooting
If you encounter issues with your Wilo Stratos PICO plus pump, refer to the following common troubleshooting steps:
- Pump Not Running:
- Check the power supply and circuit breaker.
- Ensure the electrical connection is secure.
- Verify the pump is not in a standby or off mode on the display.
- Noisy Operation / Gurgling:
- Perform the manual de-aeration routine to remove trapped air.
- Check system pressure.
- Reduced Heating Performance:
- Check pump settings on the LC display.
- Ensure there is no air in the system.
- Verify system pressure and flow.
- Pump Seized:
- The automatic deblocking function should prevent this. If it occurs, contact a qualified technician.
If the problem persists after attempting these steps, contact Wilo customer support or a certified service professional.
7. Specifications
Below are the technical specifications for the Wilo Stratos PICO plus 25/1-3-130 pump:
| Feature | Value |
|---|---|
| Manufacturer | WILO SE |
| Product Dimensions (L x W x H) | 15.6 x 18.6 x 11.6 cm |
| Weight | 2.04 kilograms |
| Item Model Number | Stratos PICO plus 25/1-3-130 |
| Color | Green |
| Style | Modern |
| Material | Metal, Carbon Steel |
| Power Source | Electric Cable |
| Voltage | 230 Volts |
| Quantity of Items | 1 |
| Batteries Included | No |
| Batteries Required | No |
| Spare Parts Availability | Information unavailable |
| International Article Code | 04048482754451 |

Figure 6: Performance curve for Wilo Stratos PICO plus pumps, illustrating head (H/m) versus flow rate (Q/m³/h) for different models (15, 25, 30/1-6 and 15, 25, 30/1-4).
8. Warranty and Support
For warranty information, please refer to the documentation provided with your purchase or contact your local Wilo representative. For technical support, spare parts, or service, please visit the official Wilo website or contact their customer service department.





