Heating circuit distributor with pump group & three-way mixer

Product overview heating circuit manifolds

The high-quality Sunex heating circuit manifold combines robust steel construction with corrosion-resistant brass nuts and 30 mm thick EPP insulation. It is available in DN20 and DN25 versions for two or three heating circuits and offers flexible connection options with external or internal threads.

Thanks to its compact design and clear labeling of the boiler and heating circuit sides, installation is simple and error-free – ideal for new buildings and modernizations alike.

Areas of application

Whether underfloor heating, radiators, or a mixed system: the heating circuit manifold optimizes heat distribution in residential buildings, commercial properties, offices, or workshops. Precise control ensures a high level of comfort, especially in systems with different flow temperatures.

Construction and materials

The high-quality steel manifold body reliably supports even high temperatures and pressures. Brass nuts ensure a durable and corrosion-resistant connection. EPP insulation minimizes heat loss and increases the efficiency of your system.

The M8 fasteners allow secure wall mounting without additional brackets, while all connections remain easily accessible.

Product overview pump group

The GPO-Sunex pump group DN 25 combines a Wilo Yonos Para 25/6 high-efficiency pump with a three-way mixing valve. It ensures precise temperature control and efficient circulation of heating and cooling media in a wide variety of systems.

Three-way mixing valve

The innovative three-way mixing valve controls heating and cooling flows precisely as needed, ensuring even temperature distribution. The powerful servo motor delivers a valve opening time of 124 seconds and a torque of 8 Nm.

High-quality EPDM insulation and durable components ensure reliable operation for many years.

Wilo Yonos Para high-efficiency pump

The Wilo Yonos Para 25/6 is characterized by low energy consumption, quiet operation, and intelligent automatic functions. It operates with a maximum power consumption of 0.44 A and an energy efficiency of 0.20.

Maximum water pressure: 6 bar, max. water temperature: 90 °C, flow rate: up to 3 m³/h.

Installation and possible uses

Thanks to its compact design and pre-assembled ball shut-off valves, integration into existing heating, cooling, or process heating systems is effortless. Thermometers in the supply and return lines provide precise temperature readings at all times, while the check valve on the supply line prevents unwanted backflow.

Ideal for new construction and modernization – in private, commercial and industrial facilities.

Technical data

Technical data heating circuit distributor

Version: DN25, 2 circuits
Dimensions (HxDxW): 193 × 137 × 552 mm
Weight: 6.05 kg
Max. operating temperature: 110 °C
Max. operating pressure: 6 bar
Max. power: 54 kW
Max. flow rate: 2.3 m³/h
Connection boiler side: 5/4" AG
Connection heating circuit side: 6/4" IG

Version: DN25, 3 circuits
Dimensions (HxDxW): 193 × 140 × 862 mm
Weight: 8.49 kg
Performance and pressure values ​​as for a 2-circuit system.

Technical data pump group

Pump: Wilo Yonos Para 25/6 SC
Power: 3–43 W
Wheelbase: 125 mm
Valve KVS: 12 m³/h
Connections above: 2 × 1" IG
Connections below: 2 × 1½" AG
Height/Width/Depth: 390 × 275 × 140 mm

Three-way mixing valve
Servo motor: 8 Nm, valve opening time: 124 s
Insulation: EPDM
Blue ball valve with thermometer (return line), red ball valve with integrated check valve (supply line)

Scope of delivery

• Heating circuit manifold DN25 of your choice
• 2 x GEMA pump group with three-way mixer