Brass 8 way manifold for underfloor heating

Product detailed description

Underfloor heating systems in residential and commercial buildings require precise flow distribution to ensure even heat output across all zones. This brass 8-way manifold is specifically designed for such applications, offering a compact and durable solution for balancing and regulating water flow in radiant heating and cooling systems. Installers working on new builds or renovations of residential, office or retail spaces will find this manifold suitable for systems using PEX-AL-PEX 16 x 2 pipe. The unit supports both heating and cooling operations within a temperature range of -10 °C to 120 °C, making it adaptable to a wide range of climate control needs.

The manifold is constructed from pressed brass (Ms 58) and nickel-plated for corrosion resistance. It includes integrated shut-off valves and flow meters with locking capability, allowing for accurate flow control and system balancing. The design incorporates a pressure relief system with an automatic air vent and a swivel drain valve, ensuring safe and efficient operation. The unit is designed for use with Eurocone fittings and 1 inch threaded connections, ensuring compatibility with standard underfloor heating installation practices.

Technical parameters

EAN	5900308730225
Valve material	Pressed brass Ms 58, nickel-plated
Length of manifold without valves	445 mm
Length of manifold with valves	535 mm
Fluids	Heating water, cooling water, water 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	Eurocone fittings for ALPEX 16 x 2 ALU-EK pipe
Recommended enclosures	Manifold enclosures
Flat sealing	WS 3825
Number of circuits	Eight
Measurement accuracy	+/- 10 %
Flow rate	1.12 m³/h
Flow meters	Dual-regulating with locking capability
Branch connections	Eurocone
Inlet and outlet connections	1 inch
Allowable 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.08H
Brand	AVANSA

The technical parameters define the operating limits and compatibility of the manifold. The maximum allowable working pressure of 6 bar and a test pressure of 10 bar ensure the unit can handle typical system pressures. The temperature range of -10 °C to 120 °C allows for use in both heating and cooling applications. The flow meters have a measuring range of 0–5 l/min with an accuracy of ±10%, which is suitable for balancing underfloor heating circuits. The recommended pipe size of PEX-AL-PEX 16 x 2 ensures proper flow and compatibility with the manifold's connection system.

Installation and connection

Installation begins with positioning the manifold in a dedicated enclosure, ensuring accessibility for maintenance. The 1 inch threaded connections for inlet and outlet should be aligned with the system's main piping. Eurocone fittings are used for connecting the manifold to the individual heating loops, and it is important to ensure a secure fit to prevent leaks. The automatic air vent and drain valve are pre-installed and should be oriented correctly to allow for proper function. The total length of the manifold without valves is 445 mm, and with valves it extends to 535 mm, so sufficient space should be allocated in the installation area. Common installation mistakes include incorrect orientation of the air vent and failure to check the tightness of Eurocone fittings, which can lead to system inefficiencies or leaks.

Compatibility and accessories

This manifold is designed for use with PEX-AL-PEX 16 x 2 pipe and requires Eurocone fittings for secure connections. It is recommended to use EPDM sealing rings for all joints to ensure a watertight seal. The unit is compatible with standard underfloor heating enclosures and should be installed in a dedicated housing to protect it from physical damage. Additional accessories such as flow meters and shut-off valves are already included in the unit. For a complete installation, it is necessary to order the appropriate enclosures and ensure that the system's piping is correctly sized and prepared for connection.

Technical background for designers

The manifold operates by distributing heated or cooled water through multiple circuits, each of which can be individually regulated using the integrated flow meters. The flow meters allow for precise balancing of the system, which is essential for achieving even heat distribution across the floor. The design supports both heating and cooling applications, making it suitable for use in radiant systems that require seasonal operation. The material properties of brass and the nickel plating contribute to the unit's durability and resistance to chemical corrosion from water additives. The integration of the manifold into the system depends on the overall design of the underfloor heating network and the number of circuits required for the space being heated.

Service and operation

Regular inspection of the manifold is recommended to ensure all connections remain tight and the flow meters function correctly. The automatic air vent should be checked for blockages, and the drain valve should be used periodically to remove any accumulated sediment. The EPDM seals should be inspected for signs of wear or degradation, and replaced if necessary. No specific service intervals are provided in the technical data, but routine maintenance is advised to maintain system efficiency and prevent leaks. The unit's design allows for easy access to all components, facilitating quick and efficient servicing without the need for complete system shutdown.

Frequently asked questions

Can the manifold be used with other types of pipe besides PEX-AL-PEX 16 x 2?
It is specifically recommended for use with PEX-AL-PEX 16 x 2 pipe due to the connection system and flow characteristics. Using other pipe types may affect performance and compatibility.

Is it possible to lock the flow meters in a specific position?
Yes, the flow meters are dual-regulating and include a locking mechanism to maintain a set flow rate during operation.

What is the maximum allowable working temperature for the manifold?
The maximum allowable working temperature is +80 °C, although the unit can handle fluid temperatures up to 120 °C for short periods.

Can the manifold be installed in a vertical position?
While the unit is typically installed horizontally, it can be mounted vertically if space constraints require it. However, the orientation of the air vent and drain valve should be adjusted accordingly to ensure proper function.

Documents for download

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