Manifold DN25 for 3 to 5 Heating Circuits (3 top / 2 bottom) up to 110 kW, Huch EnTEC R040402002 with mounting bracket

The DN25 manifold by Huch EnTEC is a hydraulic distributor designed for 3 to 5 heating circuits arranged as three outlets on the top and two on the bottom. Intended for systems with a combined output up to 110 kW, the unit centralizes flow and return connections for boilers, heat pumps or zoned heating installations. The manifold is supplied with a mounting bracket (DWZ) to enable neat, compact installation in plant rooms or distribution cabinets and to simplify pipe routing and commissioning for residential or light-commercial heating systems.

Advantages

This DN25 manifold provides organized separation of flow and return lines for multiple circuits, reducing installation time and the risk of connection errors. The design supports compact mounting via the included bracket, improving accessibility for service and balancing. Compatibility with common heating sources such as boilers and heat pumps makes it suitable for retrofit and new-build projects, while the 110 kW capacity covers most multi-zone residential and small commercial applications.

Suitable for

• Multi-zone domestic heating systems with 3 to 5 circuits
• Small commercial heating installations up to 110 kW
• Integration with boilers and heat pumps
• Retrofit projects needing compact manifold mounting
• Systems requiring organized flow and return distribution

Key specifications

• Nominal pipe size: DN25
• Number of circuits: configurable for 3 to 5 heating circuits (3 top outlets, 2 bottom outlets)
• Maximum system capacity: suitable for systems up to 110 kW combined output
• Included mounting: mounting bracket supplied for wall or panel installation
• Intended fluids: central heating water (glycol mixtures subject to compatibility)
• Typical applications: boilers, heat pumps and zoned heating distribution

How to use

Install the manifold on a solid vertical surface or inside a distribution cabinet using the supplied mounting bracket, ensuring correct orientation with the three outlets on the top and two on the bottom. Connect supply and return lines to the manifold in accordance with system drawings, observing recommended pipe diameters and flow directions. Fit appropriate shut-off valves, balancing valves and measuring points as required by the project. After connections are complete, flush the circuit, fill with treated heating fluid and purge air pockets before commissioning. Verify flow distribution and balance each circuit according to design flow rates.

Usage recommendations

Use corrosion-inhibited heating fluid and follow local regulations for water treatment. When integrating with heat pumps, confirm compatibility of operating temperatures and pressure ratings. For best results, install individual balancing valves and isolating valves on each circuit and perform professional commissioning to ensure balanced flow and efficient operation.