Manifold/collector assembly - without housing - 5/4 "xEK; 3-way; brass IVAR.CS 553 D

Product detailed description

This manifold/collector assembly is commonly used in residential and commercial heating systems where precise flow control and system balancing are required. It is ideal for installations involving multiple radiators or circuits, especially when integrating different types of heating such as radiators and underfloor heating. The unit is typically installed in central heating rooms or mechanical spaces, where access for maintenance and adjustments is necessary. The brass construction ensures durability and resistance to corrosion, making it suitable for long-term use in closed heating systems.

When installing this assembly, it is important to ensure compatibility with existing piping and control systems. The 3-way design allows for separate supply and return lines while maintaining a compact footprint. The inclusion of control and shut-off valves facilitates individual circuit regulation and isolation for maintenance. The assembly is intended for use in dry environments and requires proper insulation if exposed to cold ambient conditions.

Technical parameters

Material	Brass CW617N
Operating temperature	+120 °C
Nominal pressure	PN 10
Code	400283
Brand	IVAR

The operating temperature limit of +120°C means this assembly is suitable for standard central heating applications but not for high-temperature systems such as those using steam or solar thermal. The PN10 rating indicates it can withstand a nominal pressure of 10 bar, which is typical for most domestic and low-rise commercial heating systems. These parameters are essential for determining correct component selection and ensuring compatibility with the overall system design.

Installation and connection

The assembly is connected via 5/4 inch EK threads, which require standard pipe wrenches and thread sealant or PTFE tape for secure sealing. Prior to installation, verify that all components are free from transport damage and that the internal passages are unobstructed. Mounting brackets should be fixed to a stable surface using appropriate fasteners to prevent movement during operation. Connect the distributor to the supply line and the collector to the return line, ensuring correct orientation of the valves. After installation, perform a visual inspection for leaks and confirm that all valves operate smoothly. Common installation errors include incorrect thread sealing, misalignment of the manifold body, and failure to align valve actuators for easy access.

Compatibility and accessories

This brass manifold/collector assembly is compatible with standard heating systems using copper or steel piping and is suitable for integration with thermostatic radiator valves and balancing devices. Additional components such as insulation covers, flow meters, or pressure gauges may be required depending on system requirements. For larger installations or systems requiring protection from dust and debris, an external housing can be added separately. No specific related products are listed for this model.

Technical background for designers

The assembly operates as a central distribution and collection point for heating circuits. The distributor channels hot water to individual radiators or circuits, while the collector returns cooled water back to the boiler. The brass CW617N material offers high strength and corrosion resistance, making it suitable for closed heating systems. The 3-way configuration allows for separate supply and return lines while maintaining a compact footprint. System efficiency and longevity depend on correct sizing, proper balancing of flow rates, and regular maintenance to prevent sediment buildup. The operating temperature and pressure ratings are critical for ensuring safe and reliable performance over time.

Service and operation

Regular maintenance is recommended to ensure optimal performance. This includes checking for leaks around threaded connections and verifying that all valves operate smoothly. Before commissioning the system, especially when combining different heating types, the entire system should be flushed according to the manufacturer’s instructions to remove any debris. It is also recommended to treat the system with a preparation such as GEL.LONG LIFE 100 to protect against corrosion and scale. No specific service intervals are provided in the technical documentation.

Frequently asked questions

Can this manifold be used in a hybrid heating system with both radiators and underfloor heating?
Yes, the 3-way configuration supports integration with multiple heating types. However, the system must be thoroughly flushed and treated before operation to prevent blockages.

Is it possible to connect this assembly to a system with a pressure higher than PN10?
No, the maximum working pressure is limited to PN10. Exceeding this could result in component failure or leaks.

What should be done if the valves become stiff during operation?
Disassemble the affected valves and clean the internal parts. Apply a suitable lubricant to moving components and reassemble carefully to avoid damage.

Can the assembly be mounted vertically?
Yes, but ensure that the mounting brackets are securely fixed and that all valves remain accessible for adjustment and maintenance.