Manifold/collector assembly - for underfloor heating - without cabinet - 1 "xEK; 2-way; brass IVAR.CS 553 VP

Product detailed description

This manifold/collector assembly is commonly used in residential and commercial buildings where underfloor heating systems are installed. It enables precise control over heat distribution by separating supply and return circuits. Installers typically work with this unit during new construction or renovation projects, ensuring balanced flow rates and proper zoning of heated areas.

The unit supports integration into both radiant floor heating and hybrid systems with radiators. Its modular design allows flexibility in layout planning and commissioning. For optimal performance, it should be mounted securely and aligned with the piping network to avoid stress on connections.

Technical parameters

Material	Brass CW617N
Operating temperature	+90 °C
Nominal pressure	PN 10
Code	553970BS
Brand	IVAR

The operating temperature limit of +90°C and PN 10 pressure rating ensure suitability for standard central heating applications. These parameters guide correct system sizing, particularly when determining pipe diameters and pump capacity. They also confirm compatibility with most European district heating and boiler-based systems.

Installation and connection

Installation requires securing the unit with provided mounting brackets and connecting to 1-inch external thread (EK) fittings. Each circuit should be checked for alignment and torque specifications to prevent leaks. Common errors include misaligned manifolds or over-tightening threaded joints, which can damage brass components. Verify that all ball valves operate smoothly and that the purge and bleed functions are accessible after installation.

Compatibility and accessories

This unit is compatible with standard underfloor heating pipe systems using 1-inch connections. Accessories such as expansion vessels, circulation pumps and balancing tools are typically required for full system functionality. Additional components like insulation plates or control panels may also be needed depending on the system configuration.

Technical background for designers

The unit operates by distributing heated water through individual circuits and returning cooled fluid to the heat source. Constructed from CW617N brass, it offers high resistance to corrosion and thermal cycling. The material’s mechanical strength ensures long-term durability in fluctuating pressure and temperature environments. System efficiency depends on correct zoning and balancing, while longevity is enhanced by regular cleaning and chemical treatment of the system as recommended by the manufacturer.

Service and operation

Periodic checks should focus on valve operation, sealing integrity and the presence of debris in the system. Before commissioning, a thorough flushing of the entire system is essential to remove particulate matter that could cause blockages or wear components. Maintenance should also include verifying that all bleed and drain functions operate correctly to prevent air locks and water stagnation.

Frequently asked questions

Can this manifold be used in combination with radiator heating?
Yes, provided that the system is properly balanced and the operating conditions remain within the specified parameters of +90°C and PN 10.

What preparation is needed before system commissioning?
A complete system flush according to the manufacturer's instructions is required to remove contaminants. Using a protective additive such as GEL.LONG LIFE 100 is also recommended.

Is it necessary to specify the enclosure type separately?
Yes. When ordering, append the code with N for wall mount, BS for no enclosure, or no suffix for a room-mounted version.

How should the manifold be mounted?
Mounting brackets are included. Secure the unit horizontally to ensure even weight distribution and avoid stressing pipe connections.