Sunex heating circuit manifolds – Efficient heat distribution for your heating system

Product overview

The Sunex heating circuit manifold is specifically designed for central heating systems with radiators, underfloor heating, and mixing systems. It enables reliable distribution of the heating water to two or three independent circuits, thus offering flexible application options in residential and commercial buildings.

Available in 2-circuit DN20, 2-circuit DN25, 3-circuit DN20, and 3-circuit DN25 versions, as well as a version with male threads (AG) for easy connection. The robust construction and high-quality EPP insulation ensure long-lasting performance and minimal heat loss.

Application areas

Ideally suited for new builds and renovations: Whether underfloor heating or radiators, the manifold adapts to your system and optimizes heat distribution. In mixed systems with different flow temperatures, it excels thanks to its precise controllability.

The Sunex heating circuit manifold also ensures consistent comfort in commercial buildings such as offices, medical practices, and workshops. Its wide range of variants allows it to be adapted to individual performance requirements.

Construction and materials

The main body of the manifold is made of high-quality steel that operates reliably even at high temperatures and pressures. The nuts are made of brass and ensure a corrosion-resistant connection.

A 30 mm thick EPP insulation reduces heat loss and improves the system's efficiency. The M8 mounting allows for easy and secure wall mounting without additional brackets.

Technology

Maximum operating temperature: 110 °C | Maximum operating pressure: 6 bar. The power output ranges from 29 kW (ΔT=20 K, 2 circuits DN20) to 54 kW (ΔT=20 K, 2-/3-circuit DN25).

Maximum flow rates: 1.2 m³/h for DN20 and 2.3 m³/h for DN25. Dimensions vary depending on the version between 193/137/552 mm and 193/140/862 mm (H/D/W), the weight between 5.7 and 8.9 kg.

Assembly and connection

Thanks to clear markings on both the boiler and heating circuit sides, connections can be made quickly and without errors. The boiler side is equipped with an external thread (AG). 1" or AG 5/4" available, the heating circuit side optionally with internal thread 1", IG 6/4" or AG 1".

The included mounting hardware allows for easy wall installation. Easy access to all connections facilitates maintenance and cleaning.

Advantages at a glance

The Sunex heating manifold combines a robust steel construction, corrosion-resistant brass nuts, and effective EPP insulation. It impresses with its high performance, easy installation, and flexible connection options.

Perfectly matched to modern heating systems, it offers reliable heat distribution, reduces energy losses and increases living comfort in every building.

Technical data

DN20 2 circuits

• Distributor material: steel
• Mother: Brass
• Insulation: EPP 30 mm thick
• Fastener: M8
• Dimensions (H x D x W): 193 x 137 x 552 mm
• Weight: 5.76 kg
• Maximum operating temperature: 110 °C
• Maximum operating pressure: 6 bar
• Maximum power: 29 kW
• Maximum flow rate: 1.2 m/h
• Connection on boiler side: 1" AG
• Connection on heating circuit side: 1" IG

DN20 3 circuits

• Distributor material: steel
• Mother: Brass
• Insulation: EPP 30 mm thick
• Fastener: M8
• Dimensions (H x D x W): 193 x 140 x 862 mm
• Weight: 8.44 kg
• max.Operating temperature: 110 °C
• Maximum operating pressure: 6 bar
• Maximum power: 54 kW
• Maximum flow rate: 2.3 m³/h
• Connection boiler side: 5/4" AG
• Connection on heating circuit side: 1" IG

DN25 2 circuits

• Distributor material: steel
• Mother: Brass
• Insulation: EPP 30 mm thick
• Fastener: M8
• Dimensions (H x D x W): 193 x 137 x 552 mm
• Weight: 6.05 kg
• Maximum operating temperature: 110 °C
• Maximum operating pressure: 6 bar
• Maximum power: 54 kW
• Maximum flow rate: 2.3 m³/h
• Connection boiler side: 5/4" AG
• Connection on heating circuit side: 6/4" IG

DN25 3 circuits

• Distributor material: steel
• Mother: Brass
• Insulation: EPP 30 mm thick
• Fastener: M8
• Dimensions (H x D x W): 193 x 140 x 862 mm
• Weight: 8.49 kg
• Maximum operating temperature: 110 °C
• Maximum operating pressure: 6 bar
• Maximum power: 54 kW
• Maximum flow rate: 2.3 m³/h
• Connection boiler side: 5/4" AG
• Connection on heating circuit side: 6/4" IG

DN20 AG 2 circuits

• Distributor material: steel
• Insulation: EPP 30 mm thick
• Fastener: M8
• Dimensions (H x D x W): 170 x 140 x 552 mm
• Weight: 5.7 kg
• Maximum operating temperature: 110 °C
• Maximum operating pressure: 6 bar
• Maximum power: 29 kW
• Maximum flow rate: 1.2 m/h
• Connection on boiler side: 1" AG
• Connection on heating circuit side: 1" IG

DN20 AG 3 circuits

• Distributor material: steel
• Insulation: EPP 30 mm thick
• Fastener: M8
• Dimensions (H x D x W): 170 x 140 x 862 mm
• Weight: 8.9 kg
• Maximum operating temperature: 110 °C
• Maximum operating pressure: 6 bar
• Maximum power: 54 kW
• Maximum flow rate: 2.3 m³/h
• Connection boiler side: 5/4" AG
• Connection on heating circuit side: 1" IG

Scope of delivery

• Heating circuit distributor of your choice
• Assembly & User manual

Download

• Datasheet