ALPHA SOLAR is a circulator pump designed for thermal solar systems. It features three constant-curves modes, and the speed can also be controlled by a low-voltage PWM signal from a solar controller.

The high-efficiency ALPHA SOLAR circulator pump from Grundfos comes with a permanent magnet motor and is designed to be integrated in thermal solar pump systems. Four constant-curve settings are available and the speed can be controlled by a low-voltage PWM signal to optimise solar harvesting and reduce power consumption.

Grundfos ALPHA SOLAR offers very simple installation and a low noise level. This high-efficiency and reliable pump is built to be maintenance-free with durable ceramic bearings and shaft, as well as corrosion-resistant stainless-steel components.

Application for

• Commercial heating
• Domestic heating
• Industrial heating

Reliable and high efficiency 

The PWM signal generates an analog signal using a digital source to control pump speed, performance and to optimise solar harvesting and ensure minimal power consumption.  

• Easy Access - A manual deblocking screw is accessible from the front of the pump.
• Remote troubleshooting - A dry-running warning is available as a PWM feedback signal. 
• Easy operation - Very simple installation, low noise level and no maintenance required.