Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Uponor 1090262 Vario Plus Actuator. This actuator is designed for use in underfloor heating systems, ensuring efficient and reliable control of water flow. It replaces the Uponor 1000138 model and features a clip-on design for simplified installation.

Figure 1: The Uponor 1090262 Vario Plus Actuator, showing the blue actuator body, electrical cable, and the VA02 adapter with a red pin.
Setup and Installation
The Uponor 1090262 Vario Plus Actuator is designed for straightforward installation. Ensure all power to the heating system is disconnected before proceeding with installation.
Components Included:
- Uponor 1090262 Vario Plus Actuator
- VA02 Adapter 30x1,5
Installation Steps:
- Prepare the Manifold: Ensure the manifold valve where the actuator will be installed is clean and free from debris.
- Attach the Adapter: Screw the VA02 Adapter 30x1,5 onto the valve body of the manifold. Ensure it is securely tightened by hand.
- Mount the Actuator: The actuator features a pre-opened, clip-on design. Align the actuator with the adapter and press it firmly until it clicks into place. This secure connection ensures proper function.
- Electrical Connection: Connect the actuator's electrical wires to the appropriate terminals on your heating control system. This actuator operates on 24V and consumes 1W. Refer to your heating system's wiring diagram for correct polarity and connection points.
- Verify Installation: After installation, visually inspect all connections to ensure they are secure. Restore power to the system and test the actuator's operation.
Note: Professional installation is recommended for electrical connections to ensure safety and proper system function.
Operating Instructions
The Uponor 1090262 Vario Plus Actuator is a Normally Closed (NC) device. This means that when no power is supplied to the actuator, the valve it controls remains closed, preventing water flow. When 24V power is applied, the actuator opens the valve, allowing water to circulate through the underfloor heating circuit.
Functionality:
- Normally Closed (NC): Valve is closed when de-energized.
- Opening: When 24V power is supplied, the actuator slowly opens the valve.
- Closing: When 24V power is removed, the actuator slowly closes the valve.
The actuator works in conjunction with a thermostat or heating control system, which sends the 24V signal to open or close the valve based on room temperature requirements.
Maintenance
The Uponor 1090262 Vario Plus Actuator is designed for long-term, maintenance-free operation. However, periodic checks can help ensure optimal performance.
Recommended Checks:
- Visual Inspection: Annually inspect the actuator for any signs of physical damage, corrosion, or loose connections.
- Functionality Check: Periodically observe the actuator's operation. When the heating system calls for heat, the actuator should open the valve. When the call for heat ends, it should close.
- Cleanliness: Keep the actuator and surrounding area free from dust and debris to prevent interference with its mechanical parts.
Do not attempt to disassemble the actuator. If a malfunction occurs, refer to the troubleshooting section or contact a qualified technician.
Troubleshooting
If you experience issues with your Uponor 1090262 Vario Plus Actuator, consult the following table before contacting support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Actuator does not open/close | No power supply (24V) Loose electrical connection Faulty thermostat/controller Actuator malfunction | Check power supply to the actuator. Verify electrical connections are secure. Test the thermostat/controller. If other solutions fail, the actuator may need replacement. |
| Heating circuit not warming up | Actuator not opening valve Air in the heating circuit System pressure issues | Check actuator operation as above. Bleed air from the heating system. Check system pressure and adjust if necessary. |
| Unusual noise from actuator | Mechanical obstruction Internal component wear | Ensure no debris is interfering with the actuator's movement. If noise persists, contact a qualified technician. |
Technical Specifications
| Feature | Detail |
|---|---|
| Model Number | 1090262 |
| Manufacturer | Uponor |
| Voltage | 24 Volt |
| Wattage | 1 Watt |
| Current | 300 Nanoampere |
| Product Dimensions | 10 x 10 x 5 cm |
| Weight | 2 Kilogram |
| Included Components | VA02 Adapter 30x1,5 |
| Thread Size | MT 30x1,5 |
| Actuator Type | Normally Closed (NC) |
Warranty Information
For specific warranty terms and conditions related to the Uponor 1090262 Vario Plus Actuator, please refer to the documentation provided with your purchase or contact Uponor directly. Warranty coverage typically addresses manufacturing defects under normal use.
Customer Support
If you require further assistance, have questions not covered in this manual, or need to report a product issue, please contact your authorized Uponor dealer or the Uponor customer service department.
You can find contact information on the official Uponor website or through your product supplier.





