Manifold - fitted with regulating screws - 5/4 "xEK; 5-way; brass IVAR.CI 553

Product detailed description

Manifolds are essential components in hydronic heating systems, particularly in underfloor heating installations where precise flow control is required. This 5-way manifold is commonly used in residential and commercial buildings to manage the distribution of heated water to multiple zones. Installers working on such systems must ensure accurate sizing and proper integration to maintain system efficiency and avoid thermal imbalances.

The IVAR CI 553 is a robust solution for balancing and regulating water flow in multi-loop floor heating systems. It is installed between the primary heating circuit and the secondary distribution loops, allowing for individual adjustment of each zone. The design supports both new installations and system upgrades, where existing manifolds may need to be replaced or expanded.

Technical parameters

Material	Brass CW617N
Operating temperature	+120 °C
Nominal pressure	PN 10
Code	400005
Brand	IVAR

The nominal pressure of PN 10 and maximum operating temperature of +120°C define the conditions under which the manifold can be safely used. These parameters are critical for system designers when selecting components that can withstand the thermal and hydraulic loads of the heating system. The brass material ensures good corrosion resistance and long-term reliability in wet environments.

Installation and connection

The manifold features side inlets of 1“ F and 5/4“ F, and 3/4“ EK threaded outlets. When installing, ensure that the inlets are connected to the primary heating circuit and the outlets to the individual floor heating loops. The 50 mm spacing between outlets must be considered when routing pipes to avoid interference with adjacent components. A common mistake is misaligning the outlet ports or failing to secure the manifold to a stable mounting surface, which can lead to vibration and leaks over time. Always verify that all connections are tightened to the manufacturer’s torque specifications and that the manifold is level to prevent uneven water distribution.

Compatibility and accessories

This manifold is compatible with standard floor heating systems using 3/4“ EK threaded connections. It is typically used in conjunction with temperature sensors, balancing valves, and insulation materials to optimise system performance. Additional components such as pipe insulation and mounting brackets may be required depending on the installation layout. No related products are specified for this model.

Technical background for designers

The IVAR CI 553 operates by allowing individual adjustment of each outlet via the integrated regulating and shut-off screws. This enables precise control of water flow to each heating zone, ensuring even heat distribution. The brass CW617N material offers good mechanical strength and resistance to corrosion, making it suitable for long-term use in wet environments. The design allows for easy access to the regulating screws for maintenance and adjustments. The manifold should be integrated into the system with proper insulation and support to prevent thermal losses and mechanical stress.

Service and operation

The manifold requires minimal maintenance due to its robust construction. Regular checks should include inspecting the connections for leaks and verifying that the regulating screws are functioning correctly. No specific service intervals are provided in the technical data. If flow irregularities are observed, the regulating screws should be adjusted to restore balance. In case of suspected internal blockage or corrosion, the manifold should be disassembled for inspection and cleaning if necessary.

Frequently asked questions

Can this manifold be used in systems with higher operating temperatures?
It is not recommended for use above +120°C as this exceeds the specified operating temperature.

What is the maximum pressure this manifold can handle?
The nominal pressure is PN 10, which means it is suitable for systems operating at up to 10 bar.

Is it possible to replace individual regulating screws?
Yes, the regulating and shut-off screws are designed for replacement if damaged or worn.

Can this manifold be used with plastic piping systems?
Yes, provided that the connections are compatible with the 3/4“ EK threaded outlets.