Brass 9 way manifold for underfloor heating

Product detailed description

Underfloor heating systems require precise distribution of hot or cold water across multiple zones to ensure even thermal comfort. A 9-way manifold is a central component in such systems, particularly in residential and commercial buildings with complex heating layouts. Installers working on these systems often encounter the need to manage flow rates, pressure drops and zoning requirements. This brass 9-way manifold is designed to meet these demands, providing a durable and reliable solution for both heating and cooling applications. It is commonly used in radiant floor systems, where it connects to individual loops of PEX-AL-PEX piping, allowing for balanced flow distribution and temperature control.

The manifold is suitable for use in both new constructions and retrofit projects. It is particularly useful in multi-room buildings where each room or zone requires individual temperature regulation. The system compatibility with PEX-AL-PEX 16 x 2 piping ensures flexibility in installation, while the inclusion of flow meters and shut-off valves allows for accurate flow control and isolation of individual circuits. The manifold is also equipped with an automatic air vent and a drain valve, facilitating system maintenance and commissioning.

Technical parameters

EAN	5900308730232
Valve material	Pressed brass Ms 58, nickel-plated
Length without valves	495 mm
Length with valves	585 mm
Fluids	Heating water, cooling water, water-based mixtures with standard anti-corrosion non-freezing additives
Material	Brass
Maximum working pressure	4 - 6 bar
Maximum allowable operating temperature	+ 80 °C
Maximum allowable operating pressure	6 bar
Maximum test pressure	10 bar
Recommended pipe	PEX-AL-PEX 16 x 2
Recommended connections	Eurokonus compression fittings on ALPEX 16 x 2 ALU-EK pipe
Recommended enclosures	Manifold enclosures
Flat gasket	WS 3825
Number of circuits	Nine
Measurement accuracy	+/- 10 %
Flow rate	1.12 m³/h
Flow meters	Dual-regulation with locking option
Branch connection	Eurokonus
Inlet and outlet connection	1 inch
Permissible fluid temperatures	- 10 °C to 120 °C
Measurement range	0-5 l/min
Sealing	EPDM
Application	Heating and cooling systems
Thread	DIN ISO EN 228-1
Sound insulation	DIN 4109
Country of origin	Slovakia
Weight	3 kg
Code	ROZDZ.09H
Brand	AVANSA

The technical parameters of this manifold are essential for proper sizing and system integration. The maximum operating pressure of 6 bar and the test pressure of 10 bar indicate the robustness of the brass construction, suitable for typical underfloor heating systems. The operating temperature range of -10°C to 120°C ensures compatibility with both heating and cooling applications. The recommended pipe size of PEX-AL-PEX 16 x 2 and the Eurokonus connection type are critical for ensuring a secure and leak-free installation. The flow meters, with a measurement range of 0–5 l/min and an accuracy of +/- 10%, allow for precise flow control and monitoring.

Installation and connection

Installation of the 9-way manifold involves securing it to a mounting bracket and connecting the inlet and outlet with 1 inch threaded fittings. The Eurokonus connection type requires the use of compression fittings to connect the manifold to the PEX-AL-PEX 16 x 2 piping. Each circuit is connected using the same type of fitting, ensuring a uniform and reliable connection. The manifold should be mounted in a location that allows for easy access to the valves and flow meters, typically in a utility room or technical area.

During installation, it is important to verify that all connections are properly tightened and that the sealing material (EPDM gaskets) is intact. A common mistake is over-tightening the fittings, which can damage the threads or cause leaks. The automatic air vent and drain valve should be checked for proper operation before the system is filled with water. The manifold should be level to ensure even distribution of flow and to prevent air pockets in the system.

Compatibility and accessories

This manifold is compatible with PEX-AL-PEX 16 x 2 piping and requires Eurokonus compression fittings for connection. The recommended accessories include mounting brackets, sealing gaskets (WS 3825), and control panels for the flow meters. The manifold is also compatible with standard underfloor heating control systems, allowing for integration with thermostats and room sensors. When ordering, it is important to ensure that all necessary fittings and sealing materials are included to complete the installation.

Technical background for designers

The flow meters allow for individual circuit balancing, which is essential for achieving even heat distribution. The Eurokonus connection type ensures a secure and leak-free connection, while the EPDM sealing material provides a reliable seal against water and antifreeze solutions. The manifold is designed to operate within a wide temperature range, making it suitable for both heating and cooling applications. The inclusion of an automatic air vent and a drain valve simplifies system maintenance and reduces the risk of airlocks and waterlogging.

The manifold is integrated into the system by connecting it to the primary heating or cooling source, such as a boiler or heat pump. The flow meters and shut-off valves allow for precise control of each circuit, ensuring that the system operates efficiently and without overloading. The design of the manifold also includes provisions for future expansion, allowing for the addition of more circuits if required. The use of brass ensures that the manifold can withstand the pressures and temperatures typical of underfloor heating systems, providing a long service life with minimal maintenance.

Service and operation

Regular inspection of the manifold is recommended to ensure that all connections remain tight and that the flow meters are functioning correctly. The automatic air vent should be checked for blockages and cleaned if necessary. The drain valve can be used to empty the system during maintenance or seasonal shutdowns. No specific service intervals are provided in the technical data, but it is advisable to inspect the manifold periodically, especially after major system changes or if unusual flow patterns are observed. The EPDM sealing material should be replaced if it shows signs of wear or degradation.

Frequently asked questions

Can this manifold be used with antifreeze solutions?
Yes, the manifold is compatible with water-based antifreeze solutions containing standard corrosion inhibitors, as specified in the technical data.

What type of sealing material is used for the connections?
EPDM gaskets are used for sealing the connections, ensuring a reliable and leak-free installation.

Is it possible to expand the system with additional circuits?
The manifold is designed for a fixed number of circuits (nine), and expansion is not possible with this model.

What is the maximum operating pressure of the manifold?
The maximum operating pressure is 6 bar, with a test pressure of 10 bar to ensure structural integrity under stress.

Documents for download

• Hygienically certified test for manifolds, manifold supports and accessories (PDF)