Stainless steel manifold 7 way for underfloor heating

Product detailed description

Underfloor heating systems in residential and commercial buildings require precise flow control and reliable distribution of heated or cooled water. This 7-way stainless steel manifold is designed for such applications, ensuring even heat distribution across multiple zones. It is commonly used in radiant floor heating, radiant ceiling systems, and hydronic cooling systems. The manifold allows for individual regulation of each loop, which is essential in large or complex installations where thermal comfort and energy efficiency are critical. The compact design and Euroconus connections simplify installation and reduce the risk of leaks.

Installers working with underfloor heating systems must consider factors such as loop length, flow rates, and pressure drops. This manifold is suitable for use with PEX-AL-PEX 16 x 2 piping and is designed to handle the typical operating conditions found in modern hydronic systems. The inclusion of flow meters and shut-off valves ensures accurate monitoring and control of each circuit. The manifold is also equipped with automatic air vents and drain valves, which aid in system maintenance and commissioning.

Technical parameters

Valve material	Pressed brass Ms 58, nickel-plated
Length of manifold without globe valves	445mm
Length of manifold with globe valves	495mm
Fluids	Heating water, cooling water, water-based mixtures with standard anti-corrosion non-freezing additives
Material	Brass, heat-resistant plastics, stainless steel 1.4301
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	Euroconus compression on ALPEX 16 x 2 ALU-EK pipe
Recommended enclosures	Enclosures for manifolds
Flat gasket	WS 3825
Number of circuits	Seven
Measurement accuracy	+/- 10 %
Flow rate	1.12 m³/h
Flow meters	Dual-regulation with locking option
Branch connections	Euroconus
Inlet and outlet connections	1"
Permissible fluid temperatures	- 10 °C to 120 °C
Measurement range	0-5 l/min
Sealing material	EPDM
Application	Heating and cooling systems
Thread standard	DIN ISO EN 228-1
Sound insulation	DIN 4109
Country of origin	Germany
Code	HR1103-7
Brand	AVANSA

The technical parameters of this manifold are essential for correct system sizing and component selection. The maximum operating pressure of 6 bar and temperature of +80°C define the limits under which the manifold can safely operate. The flow rate of 1.12 m³/h indicates the total capacity of the manifold, while the flow meters provide individual loop monitoring with an accuracy of +/- 10%. The recommended pipe size and connection type ensure compatibility with standard underfloor heating tubing and fittings.

Installation and connection

Installation begins with positioning the manifold in an accessible location, typically in a mechanical room or utility area. The manifold is connected to the main supply and return lines using 1" threaded connections as specified. Each loop is connected using Euroconus fittings to the ALPEX 16 x 2 piping. It is important to ensure that all connections are tightened to the manufacturer's torque specifications to prevent leaks. The flow meters should be installed in the correct orientation, and the shut-off valves should be fully open during initial testing. A common mistake is incorrect alignment of the Euroconus fittings, which can lead to poor sealing and potential system failure. After installation, the system should be pressure tested to 10 bar to verify integrity.

Compatibility and accessories

This manifold is compatible with PEX-AL-PEX 16 x 2 piping and requires Euroconus fittings for secure connections. It is recommended to use the specified sealing compound (WS 3825) to ensure a leak-free seal. Additional accessories include drain valves, air vents, and control panels for automated regulation. When ordering, ensure that all required components are included to avoid delays in installation.

Technical background for designers

The manifold operates by distributing heated or cooled water evenly across multiple circuits. The use of stainless steel and brass ensures long-term durability and resistance to corrosion, even in systems with antifreeze additives. The Euroconus connection system provides a secure and leak-free interface between the manifold and the piping. The flow meters allow for real-time monitoring of each loop, which is essential for balancing the system and maintaining efficiency. The design of the manifold ensures minimal pressure drop across the circuits, which is important for maintaining consistent flow rates and reducing pump energy consumption. The thermal expansion properties of the materials used are compatible with the typical operating conditions of underfloor heating systems.

Service and operation

Regular maintenance of the manifold includes checking for leaks, inspecting the seals, and verifying the operation of the flow meters and shut-off valves. The automatic air vents should be checked for blockages, and the drain valves should be used to purge air from the system during commissioning. The EPDM seals should be inspected for wear or degradation, and replaced if necessary. The system should be pressure tested periodically to ensure the integrity of all connections. No specific service intervals are provided in the technical data, so maintenance should be performed as part of routine system checks.

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. The materials used are resistant to the effects of such mixtures.

What is the maximum number of loops that can be connected?
Seven loops can be connected to this manifold. Each loop is equipped with a flow meter and shut-off valve for individual control.

Is it possible to integrate this manifold with a building automation system?
Yes, the manifold can be integrated with a building automation system through the use of compatible control panels and sensors. The flow meters provide data that can be used for system optimization.

What is the recommended sealing compound for the connections?
The recommended sealing compound is WS 3825. It ensures a secure and leak-free connection between the manifold and the piping.