Manifold/collector assembly - for underfloor heating - without cabinet - 1 "xEK; 9-way; brass IVAR.CS 553 VP

Product detailed description

This manifold/collector assembly is designed for use in underfloor heating installations where precise flow control and system balancing are essential. Typically found in residential and commercial buildings, it supports both new construction and retrofit projects. The system integrates with standard hydronic heating circuits and requires careful planning to ensure even heat distribution across the floor surface.

Installers working with this unit will often handle multiple loops in large floor areas. The brass construction provides durability and resistance to corrosion, making it suitable for long-term operation in closed-loop systems. The assembly is intended for installation without an enclosure, allowing direct access to controls and valves for regular maintenance and adjustments.

Technical parameters

Installation and connection

The manifold is connected using 1-inch external threads (EK), which must be matched with corresponding fittings and piping. Before installation, verify the thread type and diameter of the connecting pipes. The unit is supplied with mounting brackets for secure fixing to walls or floors. During installation, ensure that the distributor and collector are aligned and level to prevent uneven flow distribution.

Avoid cross-threading during fitting and double-check that all connections are sealed correctly using appropriate gaskets or thread sealant. Ensure that the flow meters and shut-off valves are installed in the correct orientation. A common mistake is reversing the direction of flow meters, which can lead to inaccurate readings and improper system performance. After installation, conduct a pressure test to confirm the integrity of the system before commissioning.

Compatibility and accessories

This manifold is compatible with standard copper or PEX piping used in underfloor heating systems. It is designed for use with standard circulation pumps and thermostatic controls. When ordering, specify the required configuration without an enclosure (BS suffix). Additional components such as expansion vessels, filters, and balancing valves should be selected according to the system design and load requirements.

The unit is supplied with two ball valves with handwheels, two bypass valves with automatic air vents and drain cocks, and two plugs. These components allow for isolation and maintenance of individual loops. Installers should also consider including a system filter upstream of the manifold to prevent blockage of the flow meters and valves due to debris.

Technical background for designers

The manifold operates by distributing heated water through multiple parallel loops and collecting the return flow for recirculation. The CW617N brass used in the body offers high mechanical strength and resistance to thermal cycling. The PN10 rating ensures that the unit can handle typical domestic and light commercial pressures without deformation or leakage.

Designers should account for the thermal expansion of the manifold and associated pipework when planning the layout. The use of flexible connections or expansion joints may be necessary in larger systems. The integration of this manifold into the overall system depends on the number of loops and the desired heat output per zone. Regular maintenance of the flow meters and valves will ensure consistent performance over time.

Service and operation

During routine service, check the condition of the valves and flow meters for signs of wear or blockage. Ensure that the air vent and drain functions are working correctly. Clean the internal passages if necessary, following the manufacturer’s guidelines. A complete system flush is recommended before commissioning, especially if the system has been idle for an extended period or if there are signs of contamination.

Use of a system treatment such as GEL.LONG LIFE 100 is advised to prevent scaling and corrosion. Any issues arising from poor water quality or contamination are not covered by the manufacturer’s warranty. Follow the manufacturer’s instructions for maintenance and repair procedures to avoid voiding the warranty or causing further damage.

Frequently asked questions

Can this manifold be used with a boiler operating at higher than 90°C?
No, the unit is rated for a maximum operating temperature of +90°C. Exceeding this limit may cause material degradation and failure.

Is it possible to add more branches to the manifold later?
No, the 9-way configuration is fixed and cannot be expanded after installation. Plan the number of loops accordingly during the design phase.

What is the recommended method for sealing the threaded connections?
Use a suitable thread sealant or gasket to ensure a leak-free connection. Avoid over-tightening, which can damage the brass fittings.

Can this unit be mounted horizontally or vertically?
It is typically mounted horizontally for ease of access and proper flow meter operation. Vertical mounting may require additional support and alignment checks.