ALPHA Solar - Q-Tech ®
ALPHA Solar - Q-Tech ®


Regular price €472,00 Offer price€451,00
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Grundfos ALPHA SOLAR circulator for a high efficiency solar water system.

ALPHA SOLAR is a circulator pump designed for solar thermal systems. It has three constant curve modes, and it is also possible to control the speed using a low voltage PWM signal from a solar controller.

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

Reliable and high efficiency
The PWM signal generates an analog signal using a digital source to control pump speed, performance and to optimize solar collection and ensure minimum energy consumption .

Easy Access
A manual release screw is accessible from the front of the pump.

Remote Troubleshooting
A dry run warning is available as a PWM feedback signal.

Easy handling
Very simple installation, low noise level and maintenance-free.

Technical characteristics:

- Liquid temperature: +2º to +130ºC at 60ºC ambient temperature / +2º to +110ºC at 70ºC ambient temperature

- Ambient temperature: 0ºC to +70ºC

- Maximum relative air humidity: 95%

- System pressure: Maximum 1.0 MPa (10 bar)

- Minimum inlet pressure: 0.05 MPa (0.50 bar) at 95ºC liquid temperature.

- Protection class: IPX4D

- Insulation degree: F

- Sound pressure level: <43 dB(A)

- Supply voltage: 1x230 V +10%/-15%, 50Hz

- Motor protection: External protection of the motor is not necessary.

- Power cable: 1m without plug

- Possibility of external monitoring: PWM Profile C

- Supply: Gaskets (without Fittings) and 1m of PWM signal cable


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    Don't just trust our words.


    Service 10!,

    Problems with transportation and after a WhatsApp and a call the next day we received our robot.

    They called us to confirm that everything was ok, highly recommended.

    Esther L.S.

    Marbella, Malaga


    Material received in 48 hours,

    20 minutes on the phone for installation questions and THANK YOU THANK YOU THANK YOU.

    100% professionals

    Alvaro P.

    B. of Salamanca, Madrid


    5 Stars. There are 5 of us and we are very happy with the hot water. After searching for information for almost a month on low-consumption hot water systems, we decided on b. heat only hot water. Delivery in just 3 days from the web order.

    Delivery was delayed a day due to the height of the package but then everything was perfect.

    Thank you :)

    Angela R. and Lucas A.

    El Limonar, Malaga