Solar pump group AS1 Grundfos UPM3 Solar 25-75 2-12 l/min 3/4"

Introducing the single-line pump station AS1 Grundfos UPM3 Solar 25-75, the ideal solution for your solar heating system. This fully assembled and tested station is designed to ensure optimal circulation and efficiency in your system.

Key features and benefits

• Fully assembled: The station is ready for installation, saving time and effort.
• Tested and verified: Every station is tested to ensure reliability and trouble-free operation.
• Grundfos UPM3 Solar 25-75 circulation pump: High-efficiency pump with low energy consumption (2 ÷ 45 W) and long service life.

Return line

The return line is equipped with all the components needed for safe and efficient operation:

• Grundfos UPM3 Solar 25-75 180 circulation pump: Supply voltage: 230V, 50 Hz, temperature class TF 110, enclosure class IPX4D, Max: 1.0 MPa (10 bar). VDE, CE marking.
• Ball valve DN 20 with a 10 mbar non-return valve that can be removed for easy maintenance.
• Thermometer in the valve handle: For easy temperature monitoring (range 0-120 °C).
• 6 bar safety group with safety valve and pressure gauge with a diameter of 63 mm (0-10 bar) and a 3/4" M connection to a diaphragm expansion vessel.

Technical specifications and benefits

• Thermal insulation box: Made of expanded polypropylene (dimensions: 155×425×150 mm) to minimise heat losses.
• Mounting plate: Allows quick and easy installation on the back of the station.
• High resistance: Maximum operating pressure - 10 bar, PN 10. Continuous temperature up to 130 °C, resistant to low and high temperatures.
• Optimised for low flow rates: Ideal for collector arrays with an area of 2 to 12 m² and a heat output of up to 50 kW.
• Anti-corrosion coating: Resistant to water, aqueous glycol solutions and inhibitors.
• Ecodesign 2015: EEI≤0.20 part 3 – energy efficiency in line with the latest standards.
• Flow regulation: Flow regulator range: 2 ÷ 12 l/min, user-adjustable.
• Pipe connections: 3/4", external threads.
• European production: A guarantee of high quality and reliability.

Pump features

• Grundfos UPM3 Solar 25-75 180 circulation pump: Ensures reliable and efficient circulation of the heat transfer fluid.
• Pulse-width modulation (PWM signal): For precise speed control and optimisation of system operation.
• Power cable with connector included: For easy and quick connection.
• Anti-corrosion coating of the housing: Provides long-lasting corrosion protection.
• Wide temperature range: Temperature class: TF 110 (max. 110 °C).
• High degree of protection: Enclosure class: IPX4D.
• Compatibility: Suitable for use with differential temperature controllers (e.g. Sorel STDC, MTDC, LTDC, XTDC) to use the pump's PWM input (the Mini Superseal signal cable is not included and is ordered separately).

Invest in the single-line pump station AS1 Grundfos UPM3 Solar 25-75 and ensure reliable, efficient and long-lasting operation of your solar heating system. Enjoy comfort and savings with this high-quality product!

• Fully assembled and tested station.
• High-efficiency Grundfos UPM3 Solar 25-75 pump.
• Optimised for low flow rates and easy installation.