Manifold - fitted with shut-off valves - 5/4 "xEK; 11-way; brass IVAR.CS 553

Product detailed description

Manifolds with integrated shut-off valves are essential components in hydronic heating systems, particularly in floor heating applications where individual loop control is required. Installers working on residential or commercial buildings with combined floor and radiator heating systems often use such manifolds to manage flow distribution and isolate specific circuits for maintenance or zoning. The system compatibility and material properties are critical for ensuring long-term reliability and thermal efficiency in environments with fluctuating temperatures and pressures.

This manifold is typically installed in central heating systems where precise control of return flow is necessary. It is commonly used in underfloor heating systems with multiple circuits, allowing for the isolation of individual loops for maintenance or temperature adjustment. The design supports integration with both manual and automated control systems, making it suitable for both traditional and smart building applications.

Technical parameters

Material	Brass CW617N
Operating temperature	+120 °C
Nominal pressure	PN 10
Code	400031
Brand	IVAR

The operating temperature of +120°C and PN 10 pressure rating are key factors in determining the suitability of this manifold for specific heating systems. These parameters ensure compatibility with standard floor heating systems that operate within typical temperature and pressure ranges. The CW617N brass material provides good corrosion resistance and mechanical strength, making it suitable for long-term use in closed heating circuits.

Installation and connection

The manifold features two inlet ports: one with a 1-inch female thread and another with a 5/4-inch female thread. The 11 outlets are threaded in 3/4-inch EK format, with a 50 mm spacing between each. Installers should ensure that all connections are properly sealed with appropriate thread sealant or PTFE tape to prevent leaks. The manual shut-off valves are pre-installed and can be replaced with electric actuators if automated control is required. Common installation errors include incorrect thread orientation, failure to use sealing compounds, and improper alignment of the manifold with the piping layout. It is essential to verify the direction of flow and ensure that the manifold is installed in a location that allows for easy access to the valves for maintenance and adjustment.

Compatibility and accessories

This manifold is compatible with standard floor heating systems and can be integrated with both manual and electric actuators. For automated control, the manual shut-off valves can be replaced with electric actuators such as IVAR.TE 3040, IVAR.TE 4040, IVAR.TE 3041, and IVAR.TE 4041. These actuators allow for remote or programmable control of individual circuits, enhancing system flexibility and efficiency. When installing, ensure that the system includes appropriate flow regulators and balancing valves to maintain even distribution of heat. Additional components such as pressure gauges and expansion vessels may also be required depending on the system design.

Technical background for designers

The manifold operates by distributing and regulating the flow of heated water through multiple circuits. The CW617N brass body provides good thermal conductivity and resistance to corrosion, ensuring long-term performance in closed heating systems. The PN 10 rating indicates that the manifold can withstand a nominal pressure of 10 bar, which is suitable for most residential and commercial heating applications. The integration of shut-off valves allows for individual circuit isolation, which is important for system maintenance and zoning. The material properties of the brass and the design of the manifold contribute to its durability and thermal efficiency. Proper system design, including correct pipe sizing and flow balancing, is essential for maximizing the manifold’s performance and minimizing energy consumption.

Service and operation

Regular inspection of the manifold and its connections is recommended to ensure that there are no leaks or blockages. The shut-off valves should be checked for smooth operation and proper sealing. If electric actuators are used, ensure that the electrical connections are secure and that the actuators are functioning correctly. The manufacturer recommends a system flush before commissioning, especially when combining floor and radiator heating systems. This helps to remove any debris or contaminants that could affect system performance. The use of a system treatment such as GEL.LONG LIFE 100 is also recommended to extend the lifespan of the manifold and other components.

Frequently asked questions

Can the manual shut-off valves be replaced with electric actuators?
Yes, the manual shut-off valves can be replaced with electric actuators such as IVAR.TE 3040, IVAR.TE 4040, IVAR.TE 3041, and IVAR.TE 4041 for automated control of individual circuits.

What is the maximum operating temperature of the manifold?
The manifold is rated for an operating temperature of up to +120°C, making it suitable for use in standard floor heating systems.

What type of thread is used for the outlets?
The outlets are threaded in 3/4-inch EK format, which is a common connection type for heating system components.

Is a system flush required before commissioning?
Yes, the manufacturer strongly recommends a system flush before commissioning to remove any debris or contaminants that could affect system performance.