Manifold/collector assembly - for underfloor heating - without cabinet - 1 "xEK; 6-way; brass IVAR.CS 553 VP

Product detailed description

This manifold/collector assembly is suitable for underfloor heating systems in residential and commercial buildings. It is used to distribute and collect heated water through multiple circuits. The brass construction ensures durability in wet environments and long-term reliability in closed heating loops. Installers typically integrate this unit into systems with radiant floor panels, ensuring balanced flow distribution and efficient thermal performance.

The assembly supports standard underfloor heating configurations and is commonly used in conjunction with thermostats and circulators. The inclusion of flow meters and shut-off valves allows for precise flow control and isolation of individual circuits during maintenance. The unit is intended for use in systems operating at up to 90°C and requires careful system flushing prior to commissioning to avoid blockages.

Technical parameters

Material	Brass CW617N
Operating temperature	+90 °C
Nominal pressure	PN 10
Code	553974BS
Brand	IVAR

The operating temperature limit of +90°C and PN 10 pressure rating are critical for selecting this unit in underfloor heating applications. These values determine compatibility with standard radiant floor panels and ensure safe operation under normal heating conditions. The CW617N brass material is resistant to corrosion and suitable for long-term use with water-based heating media.

Installation and connection

Installers should follow a standard procedure: mount the manifold on a wall or support frame using the included brackets, connect the supply and return lines with 1" EK threads, and attach the individual circuit pipes. Ensure all connections are tightened to the manufacturer’s recommended torque to prevent leaks. Check for proper alignment of flow meters and correct orientation of shut-off valves. Common errors include incorrect thread sealing and misalignment of the manifold body, which can affect flow balance and system efficiency.

Compatibility and accessories

This manifold is compatible with standard underfloor heating systems using water as the heating medium. It is typically used with radiant floor panels and requires additional components such as circulators, expansion vessels, and thermostats. Accessories like insulation sleeves for pipes and mounting brackets should be ordered separately. Related products include pump units and control systems for automated flow regulation.

Technical background for designers

The manifold operates by dividing the incoming hot water into multiple circuits and collecting the cooled return water. The CW617N brass material offers good thermal conductivity and resistance to internal scaling. The PN 10 rating indicates suitability for low-pressure systems, while the maximum temperature of +90°C aligns with standard heating system parameters. For optimal performance, the system should be flushed before commissioning and treated with a long-life inhibitor to extend component lifespan.

Service and operation

Regular checks should include verifying the tightness of all connections, ensuring correct flow meter readings, and inspecting the shut-off valves for leaks. The automatic air vents and drain valves allow for periodic system maintenance. No scheduled service intervals are specified, but immediate inspection is recommended after any suspected contamination or performance drop.

Frequently asked questions

Can this manifold be used with both underfloor heating and radiator systems?
Yes, provided the entire system is flushed according to the manufacturer’s instructions before operation. This helps prevent blockages caused by debris.

Is it possible to add more circuits to this unit?
No, the unit is fixed at six circuits. Additional manifolds would need to be installed for larger systems.

What is the recommended treatment for the heating system before commissioning?
The system should be flushed thoroughly and treated with a long-life inhibitor to prevent corrosion and scaling.

Can the manifold be mounted in a cabinet?
Yes, but the cabinet must be selected separately. The unit is available in versions with or without a cabinet depending on the order code.