Assembly manifold for heating elements - without cabinet, 1" x EC, 8-way

Product detailed description

Manifold assemblies are essential components in central heating systems, particularly in radiator-based configurations. This 8-way model is suitable for residential and commercial buildings where balanced heat distribution is required. It is commonly used in systems where multiple radiators are connected to a single heat source. Installers working with traditional radiator heating or combined systems with sanitary circuits will find this unit suitable for integration into the primary loop. The absence of a built-in pump means the system relies on the boiler or an external circulation pump for flow. The unit is designed for installation without an enclosure, requiring careful placement to ensure accessibility for maintenance and inspection.

Technical parameters

Spacing of outlets	50 mm
EAN	8595145902491
Weight	6.881 kg
Code	551756N
Brand	IVAR

The 50 mm spacing between the 3/4 inch EK outlets ensures compatibility with standard radiator connections. The 1 inch F inlets allow for secure integration with main supply lines. The 120°C operating temperature is suitable for conventional radiator systems with a recommended temperature drop of 75°C to 65°C. The PN 10 pressure rating ensures safe operation under typical domestic and light commercial conditions.

Installation and connection

The manifold should be mounted horizontally with the distributor above the collector to facilitate air venting. The 1 inch F inlets require threaded connections, while the 3/4 inch EK outlets use external threading. Installers should ensure all connections are tightened to the manufacturer's torque specifications to prevent leaks. A common mistake is incorrect orientation of the unit, which can lead to poor air venting and uneven flow. Before commissioning, the system should be flushed to remove debris, especially in mixed systems with underfloor heating and radiators. The unit must be installed at the highest point in the system to allow for proper air release, unless alternative venting methods are used in upper floors.

Compatibility and accessories

This manifold is compatible with standard radiator circuits and can be used in conjunction with external circulation pumps if required. The set includes mounting brackets, inlet ball valves, and an automatic air vent with a swing check valve. Additional components such as a circulation pump or enclosure must be ordered separately. It is suitable for use with the IVAR.CS 501 ND series and is not recommended for systems with high particulate content unless pre-filtration is in place.

Technical background for designers

The unit operates by distributing heated water through the 8 outlets to individual radiators and collecting the return flow via the collector. The nickel-plated brass (CW617N) construction provides resistance to corrosion and ensures long-term reliability in wet environments. The design allows for balanced flow distribution, which is critical in systems with multiple radiators. The absence of a built-in pump means the system must be sized to ensure adequate flow rates and pressure drop across the manifold. The material properties of CW617N also allow for thermal expansion and contraction without compromising the integrity of the connections.

Service and operation

Periodic inspection of the air vent and check valve is recommended to ensure they remain functional. The system should be flushed before initial operation and at regular intervals to prevent blockages caused by debris. The manufacturer notes that functional issues caused by system impurities are not the seller's responsibility, so proper filtration and flushing are essential. The unit does not require scheduled service intervals beyond these checks, but any signs of leakage or blockage should be addressed immediately.

Frequently asked questions

Can this manifold be used with an external circulation pump?
Yes, the unit is designed for use with an external pump. The absence of a built-in pump allows for greater flexibility in system configuration.

Is it suitable for mixed systems with underfloor heating and radiators?
Yes, but the system must be flushed thoroughly before commissioning. Careful planning is required for air venting in upper floors.

What is the maximum operating temperature?
The unit is rated for a maximum temperature of 120°C, suitable for radiator systems with a recommended temperature drop of 75°C to 65°C.

Can the unit be installed vertically?
No, the unit must be installed horizontally with the distributor above the collector to ensure proper air venting and flow balance.