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

ALPHA Solar

Model
Regular price €572,30 Sale price€462,56
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Shipping calculated at checkout.

  • 3 in stock
  • Backordered, shipping soon

At Q-TECH, we apply the same clear rules for everyone: the law protects you, and when applied correctly, it protects us as well. By processing your purchase, you accept our General Terms and Conditions of Sale. If you are purchasing as a consumer (B2C), nothing stated herein limits the rights granted to you by mandatory law (RDL 1/2007, TRLGDCU): the 3-year legal warranty of conformity and the right of withdrawal under the terms and with the exceptions legally provided, which are detailed below. References to "B2B" apply only to businesses and professionals.

Your guarantees

  • Rights intact: 14 days of withdrawal from receipt for most products—subject to the legal exceptions you will see below, such as goods made to your specifications—and a 3-year legal warranty of conformity, under the terms of the TRLGDCU.
  • Conformity with the description: we guarantee that the equipment will correspond to the published technical description and what one could reasonably expect from it (arts. 115 et seq. TRLGDCU). Images and videos are for guidance only: the manufacturer may supply a more recent revision of the product or introduce minor aesthetic, packaging, or firmware changes, without this constituting a lack of conformity as long as the described characteristics and performance are maintained.
  • Traceability that also protects you: we document the condition, serial number, and seal of each piece of equipment upon shipment, and we video-record the opening of returns; this is your proof of the condition in which the goods were delivered.

Responsible use and your part

  • If you are thinking of returning it, keep it as you received it: without installing or activating it, with its seals, accessories, and packaging intact. This is how to ensure a full refund, without deductions.
  • Handling that exceeds inspection reduces value: handling the equipment beyond what is necessary to verify its nature and operation may result in a real, assessed, and case-by-case justified deduction (art. 108.2 TRLGDCU), never a fixed percentage. In particular: activating or registering the serial number, linking it to a manufacturer's account or app, circulating water through hydraulic equipment, unsealing probes, or installing software or consumables. Initial inspection of the product does not lead to a deduction.
  • The same item must be returned: withdrawal requires returning the supplied unit. Different equipment, or equipment with prior use, age, or wear prior to purchase, does not constitute a valid withdrawal.
  • Installation and cybersecurity, shared responsibility: this is technical hardware; you are responsible for correct installation, credentials, patches, and backups, while we deliver a compliant product. Q-TECH is not liable for damages resulting from poor installation, incorrect configuration, or omission of patches by the customer or third parties (in B2C, without prejudice to the legal warranty and liability for intent or negligence, arts. 86 and 130 TRLGDCU).
  • Delivery of bulky goods: delivery is made to the curb. B2C: transport risk is ours until physical delivery (art. 66 ter); we recommend noting visible damages on the delivery note and notifying us of breakages within 24-48 hours with photographs to activate the insurance. B2B: inspection and notation on the delivery note are mandatory; hidden damages must be reported within 24 hours (art. 366 CCom). Unjustified rejection or incorrect shipping information will entail the actual outbound and return costs (approx. €85-550 for heavy machinery).

Made to your measure (Advanced Pre-Assembly)

  • If your order includes equipment, racks, hydraulic assemblies, or technical rooms made or configured according to your specifications (permanent joints, custom cuts or wiring, parameterization, pressure testing), these are custom goods without the right of withdrawal from the conclusion of the contract (art. 103.c TRLGDCU; CJEU Case C-529/19), which is informed before purchasing and documented in the signed Order Note. A test you request without permanent modification retains your right of withdrawal, with only the actual loss of value caused by that test being deducted. Would you prefer to receive it tested, configured, and ready to connect, without assuming these risks? Contract our Advanced Pre-Assembly or the prior technical audit.

If you are purchasing as a business or professional (B2B)

  • The transaction is governed by the Commercial Code: firm sale, without the right of withdrawal; notification of defects within 4 days (apparent) / 30 days (hidden), arts. 336 and 342. Q-TECH acts as a distributor and excludes indirect damages, loss of profit, and data loss, limited to the price of the equipment, without prejudice to the manufacturer's commercial warranty.

Product warnings v1.0 · June 2026. Information summary; the complete and binding conditions are those published at q-tech.es.

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Grundfos ALPHA SOLAR circulator pump for a highly efficient solar water system.

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

Grundfos ALPHA SOLAR offers very easy installation and low noise levels. 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 highly efficient
The PWM signal generates an analog signal using a digital source to control the pump speed and performance, optimize solar energy collection, and ensure minimum energy consumption.

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

Remote troubleshooting
A dry-running warning is available as a PWM feedback signal.

Easy handling
Very easy installation, low noise levels, and maintenance-free.

Technical specifications of the Grundfos Alpha solar electronic circulator pump:

- Liquid temperature: +2°C to +130°C at 60°C ambient temperature /  +2°C to +110°C at 70°C ambient temperature

- Ambient temperature: 0°C to +70°C

- Maximum relative air humidity: 95%

- System pressure: Maximum 1.0 MPa (10 bar)

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

- Protection class: IPX4D

- Insulation class: F

- Sound pressure level: <43 dB(A)

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

- Motor protection: No external motor protection required.

- Power cable: 1m without plug

- External monitoring option: PWM profile C

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

Documentation for the Grundfos Alpha solar electronic circulator pump:

Download product catalog 

Availability and lead times: this item is in stock at our warehouse. Occasionally, depending on the time of year, an error may occur in the stock update. If no units are available at the time of your order, we will order them urgently and immediately inform you of the updated delivery time.

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