Assembly distributor IVAR.CS 553 D, 8-way

Product detailed description

This 8-way distributor assembly is commonly used in residential and commercial hydronic heating systems where multiple radiator circuits are required. It is typically installed in central heating systems that combine radiator and underfloor heating. The unit is designed for integration into systems operating at nominal pressure PN 10 and temperatures up to +120°C. It provides a compact solution for managing flow distribution and regulation in multi-circuit heating installations.

Installers working with this model typically handle systems requiring individual temperature control for each circuit. The assembly is suitable for use in both new builds and retrofit projects, particularly where zoning and precise flow control are required. The inclusion of control and shut-off valves allows for efficient system balancing and maintenance.

Technical parameters

Operating temperature	+120 °C
Nominal pressure	PN 10
EAN	8595145903191
Weight	6.299 kg
Code	553676
Brand	IVAR

The operating temperature of +120°C and nominal pressure of PN 10 are critical for determining the suitability of this distributor for specific heating systems. These parameters ensure compatibility with standard central heating circuits and allow for safe operation in systems with high-temperature heat sources such as condensing boilers or heat pumps. The pressure rating is essential for ensuring the distributor can handle the hydraulic demands of multi-circuit systems.

Installation and connection

The distributor is connected via a 1 inch x EK thread, which must be matched with the corresponding pipe or manifold. During installation, it is important to verify that all connections are clean and free of debris to prevent blockages. The unit must be mounted horizontally with the provided mounting brackets to ensure proper alignment and stability. Common installation errors include incorrect orientation of the valves or failure to follow the manufacturer’s flushing instructions before commissioning. Installers should also ensure that the system is fully drained and flushed before connecting the distributor to avoid damage from particulate matter.

Compatibility and accessories

The IVAR.CS 553 D is compatible with standard copper or plastic piping systems operating at PN 10. It is typically used in conjunction with thermostatic valves and flow meters to enable precise system balancing. For underfloor heating systems, it is recommended to install a separate set of temperature and flow meters to monitor and regulate the system effectively. Additional components such as insulation or protective covers may be required depending on the installation environment.

Technical background for designers

The distributor operates by dividing the incoming flow into multiple circuits and allowing individual control of each via the integrated control and shut-off valves. The body is constructed from brass CW617N, a material known for its corrosion resistance and durability in hot water environments. The design allows for integration into both open and closed heating systems. The service life and efficiency of the unit are influenced by the quality of the water in the system and the regularity of maintenance. Proper system flushing and chemical treatment are essential to prevent scaling and corrosion.

Service and operation

Regular inspection of the valves and connections is recommended to ensure continued performance. The manufacturer recommends a full system flush before commissioning, particularly when combining underfloor and radiator heating. No specific service intervals are provided, but any signs of leakage or reduced flow should be investigated immediately. The unit should be kept clean and free of debris to maintain optimal operation.

Frequently asked questions

Can the IVAR.CS 553 D be used with underfloor heating systems?
Yes, it can be used with underfloor heating systems, but it is recommended to install a separate set of temperature and flow meters for accurate regulation.

Is it necessary to install a system flush before commissioning?
Yes, the manufacturer strongly recommends a full system flush before commissioning to remove any debris that could cause blockages or damage.

Can the distributor be used in systems with higher pressure than PN 10?
No, it is designed for nominal pressure PN 10 and should not be used in systems exceeding this pressure rating.

What type of valves are included in the set?
The set includes control valves on the distributor side and shut-off valves on the collector side, allowing for individual circuit control and isolation.