Manifold/collector assembly - for underfloor heating - without cabinet - 1 "xEK; 8-way; brass IVAR.CS 553 VP

Product detailed description

This manifold/collector assembly is used in underfloor heating applications in residential and commercial buildings. It connects individual heating loops to the central heating system, ensuring balanced distribution of heat. Installers typically integrate these units into radiant floor systems to manage flow rates and isolate circuits. The unit is intended for use in systems where precise control over water flow is required.

As part of a larger hydronic system, the assembly allows for efficient zoning and helps maintain even heat distribution. It is often used in conjunction with thermostats and circulators. The compact design makes it suitable for both embedded and surface-mounted installations.

Technical parameters

Installation and connection

Installers should ensure all components are correctly assembled before mounting. The manifold includes regulating flow meters on the distributor side and shut-off valves on the collector side. Connect supply and return lines using 1 x EK fittings. Verify that all connections are sealed properly and that the unit is mounted level to prevent air entrapment. Common errors include incorrect orientation of flow meters and failure to purge air during commissioning.

Compatibility and accessories

This unit is compatible with standard underfloor heating systems. Accessories such as mounting brackets and insulation sleeves are included. When ordering, specify the cabinet type — the code 553976BS denotes a version without a cabinet. Additional components such as circulation pumps or expansion vessels may be needed depending on system configuration.

Technical background for designers

The distributor controls flow to individual heating loops while the collector returns water to the boiler. CW617N brass ensures resistance to chemical attack from common antifreeze solutions and water impurities. Proper sizing of the manifold depends on the total number of circuits and required flow rates per loop.

Service and operation

Before commissioning, it is essential to flush the entire system according to the manufacturer’s instructions, especially if combining underfloor heating with radiators. Regular visual inspections should be carried out to detect leaks or blockages. Any issues with flow regulation or pressure drops may indicate the need for cleaning or recalibration.

Frequently asked questions

Can this manifold be used in mixed heating systems?
Yes, provided the system is flushed thoroughly prior to commissioning to remove debris that could damage internal components.

Is a cabinet required for installation?
No, the code 553976BS indicates a version without a cabinet. However, an enclosure can be added separately if needed for protection or aesthetics.

What is the recommended maintenance procedure?
It is advised to follow the manufacturer’s flushing and cleaning guidelines before initial operation and periodically thereafter to ensure optimal performance.

Are additional valves included with the assembly?
Yes, the package includes two ball valves with locknuts, two connecting manifolds with automatic air vents and drain valves, and other necessary fittings for immediate installation.