The Onnline PAW HEATBLOC BASIC31 is a professional-grade DN 25 pump group engineered for efficient heat distribution in hydronic heating systems. This unit serves as a robust foundation for managing heating circuits, providing essential shut-off and flow control capabilities. Designed for versatility, this model is supplied without a mixer and without a circulation pump, offering installers the freedom to select and integrate components that best suit the specific hydraulic requirements of the project.
Advantages
The primary benefit of the Onnline PAW HEATBLOC BASIC31 is its modular and flexible design, which allows for custom configuration of the heating circuit. The unit features high-quality thermal insulation that minimizes heat loss, contributing to the overall energy efficiency of the HVAC system. Its compact construction simplifies installation in tight spaces, while the durable materials ensure long-term reliability and consistent performance in demanding professional heating applications.
Suitable for
- Residential and commercial heating system distribution
- Systems requiring flexible pump and mixer selection
- Hydronic heating circuits with DN 25 piping
- Professional HVAC installations where thermal efficiency is critical
When it may not be suitable
This pump group is not suitable for systems that require integrated mixing valves for temperature control, as this model is designed without a mixer. It is also not appropriate for applications requiring a pre-installed circulation pump, as the unit is delivered as a base assembly only.
Key specifications
- Nominal diameter: DN 25
- Configuration: Without mixer and without circulation pump
- Application: Heating system distribution
- Thermal insulation: Integrated high-efficiency housing
How to use
To use the Onnline PAW HEATBLOC BASIC31, mount the unit onto the heating manifold or wall bracket according to the system layout. Select a compatible circulation pump that meets the flow and head requirements of your specific heating circuit and install it into the designated space. Connect the supply and return piping to the DN 25 ports, ensuring all seals are properly tightened to prevent leaks. Once the components are installed, verify the integrity of the connections and proceed with system filling and air purging.
What to consider before purchase
- Ensure the DN 25 size matches your existing piping infrastructure
- Verify that you have a compatible circulation pump available for installation
- Confirm whether your system requires a mixing valve, as this model does not include one
- Check the space requirements for the compact housing dimensions
Usage recommendations: Always perform a pressure test after installation to ensure all connections are secure. It is recommended to use professional-grade sealing materials and to follow the specific technical guidelines provided by the circulation pump manufacturer to ensure optimal system performance.
