Manifold/collector assembly - for underfloor heating - cabinet N-KLASIK 1 - 1 "xEK; 2-way; brass IVAR.CS 553 VP

Product detailed description

This manifold assembly is suitable for underfloor heating applications in residential and commercial buildings. It is typically used in hydronic heating systems where precise flow control and zoning are required. Installers and contractors working with radiant floor heating systems will find this unit ideal for balancing and regulating water flow across multiple circuits. The unit integrates into both new constructions and retrofit projects, particularly in systems where individual room temperature control is necessary.

The assembly includes a distributor equipped with flow control valves and a collector with shut-off valves. Additional components such as mounting brackets, ball valves, transition couplings, and temperature measurement points ensure a complete solution for system setup. The brass construction provides durability and resistance to corrosion, making it suitable for long-term operation in closed heating circuits.

Technical parameters

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

The operating temperature of +90°C and nominal pressure of PN10 are critical for selecting this manifold in systems using standard heating water. These parameters ensure compatibility with conventional central heating boilers and heat pumps operating within these limits. The CW617N brass alloy is chosen for its mechanical strength and resistance to thermal expansion, which is important for maintaining tight seals under varying load conditions.

Installation and connection

Prior to installation, verify that the manifold is compatible with the selected cabinet type—floor-mounted (standard), wall-mounted (suffix N), or without a cabinet (suffix BS). The unit connects via 1-inch external threads (EK) and requires secure mounting with provided brackets. Ensure that all threaded connections are tightened to the manufacturer’s torque specifications to prevent leaks. Common mistakes include incorrect orientation of the distributor and collector or failure to purge the system before commissioning, which can lead to blockages or inaccurate flow readings.

Compatibility and accessories

This manifold is designed for use with standard underfloor heating pipe diameters and is compatible with IVAR’s CS 553 VP system. Additional components such as circulation pumps, thermostats, and balancing tools may be required depending on the system configuration. Ensure that the cabinet type is specified at the time of order to avoid delays during installation.

Technical background for designers

The CW617N brass alloy is selected for its high tensile strength and resistance to thermal cycling. This material is well-suited for use in closed-loop heating systems where temperature fluctuations are expected. The manifold functions as a central hub for distributing and collecting heated water to and from individual heating loops. Proper sizing of the manifold ensures even flow distribution and minimises pressure losses. Long-term performance depends on correct installation, system flushing, and the use of protective additives such as GEL.LONG LIFE 100 to prevent internal corrosion and scaling.

Service and operation

Before commissioning, it is essential to flush the entire system according to the manufacturer’s instructions. This helps remove any debris or particulates that could affect valve function or cause blockages. Regular inspection of the manifold should include checking for signs of leakage around threaded connections and verifying the operation of shut-off and balancing valves. Although no specific service intervals are provided in the brief, periodic checks are recommended to maintain system efficiency.

Frequently asked questions

Can this manifold be used with a heat pump system?
Yes, provided the heat pump operates within the specified temperature range of +90°C and nominal pressure of PN10.

Is it possible to mount the manifold in a wall cabinet?
Yes, by ordering the unit with the suffix N, the cabinet is configured for wall mounting.

What should be done if air remains trapped in the system after installation?
Air should be manually purged through the automatic air vent included in the transition coupling. Repeat the process until no further air is released.

Can the manifold be used without a cabinet?
Yes, by ordering the unit with the suffix BS, the cabinet is omitted and the manifold is installed directly into the system layout.