Vertical manifold VIESSMANN FKC-2S (DWZ) — hydraulic manifold for heating systems

Vertical manifold VIESSMANN FKC-2S (DWZ) is a hydraulic manifold designed for heating and hydronic distribution systems. The unit provides vertical supply and return separation in a compact housing to organize piping runs, connect multiple heating circuits and facilitate balanced flow distribution. Its construction suits installations where space-saving vertical mounting is required in residential and light commercial applications.

Advantages

The VIESSMANN FKC-2S (DWZ) manifold enables neat and accessible connection of several heating circuits while maintaining hydraulic balance between supply and return lines. The vertical arrangement reduces footprint and simplifies installation in shafts or narrow plant rooms. Built from materials selected for heating applications, the manifold supports reliable flow distribution and easier commissioning and maintenance compared with ad-hoc piping solutions.

Suitable for

• Residential underfloor heating and radiator circuits
• Small apartment blocks and light commercial heating installations
• Systems requiring compact vertical mounting in utility spaces
• Renovation projects where replacing or reorganizing distribution is needed

Key specifications

• Configuration: vertical supply and return manifold
• Function: central hydraulic distribution for multiple heating circuits
• Compatibility: designed for hydronic heating systems (radiators, underfloor heating)
• Mounting: vertical installation to minimize footprint
• Connections: multiple port connections for circuit linkage and balancing components
• Materials: corrosion-resistant materials suitable for heating water

How to use

Install the VIESSMANN FKC-2S (DWZ) manifold vertically on a stable wall or within a designated service shaft following local plumbing and heating regulations. Connect the supply and return mains to the manifold inlet and outlet, then attach each heating circuit to the provided ports. Integrate flow meters, balancing valves or actuators where required for regulation and commissioning. After completing hydraulic connections, perform pressure and leak tests, then carry out commissioning to set flow rates and verify balanced distribution across circuits.

Usage recommendations

Use appropriate balancing and control components (flow meters, manual or automatic balancing valves, actuators) to achieve even heat distribution and efficient system operation; follow manufacturer installation guidelines and local codes for safe and correct assembly.