Kit solar Serie VMC322 ESBE 31521100 - Q-Tech ®

ESBE VMC322 Series solar kit 31521100

Regular price€470,82
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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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The ESBE VMC322 Series Solar Thermal Kit is a dual-function unit essential for optimizing efficiency and safety in Domestic Hot Water (DHW) systems that integrate solar energy.

Designed by ESBE, this kit not only guarantees maximum utilization of the heat captured by the solar collector but also offers a crucial anti-scald safety function for the end user. It is the ideal solution for small-scale DHW installations that require precise and reliable temperature control.

✨ Dual Functionality and Operational Benefits (E-E-A-T)

The VMC322 is an advanced engineering component that intelligently manages the flow of domestic hot water.

Temperature Control and Intelligent Diversion

  • Maximum Solar Utilization: If the water from the solar collector is at an optimal temperature, it is directed straight to be mixed as DHW.

  • Guaranteed Thermal Support: If the solar water temperature is insufficient, the kit automatically diverts it to an additional heat source (such as a gas boiler) to ensure the service temperature.

  • Precise DHW Mixing: It acts as a thermostatic mixing valve to ensure the outlet water reaches the selected setpoint temperature (45ºC, 50ºC, or 60ºC).

  • Ideal for Compact Applications: Designed specifically for small-scale solar systems with optimal performance of Kvs = 1.5.

Anti-Scald Safety (Key Trust Feature)

  • Automatic Cold Water Failure Cut-off: In the unlikely event of a cold water supply failure, the hot water supply is shut off immediately.

  • Absolute Prevention: This safety feature prevents scalding from excessively hot water, increasing reliability and complying with safety regulations for DHW installations.

⚙️ Detailed Technical Specifications

The ESBE VMC322 is designed to operate with maximum efficiency and precision:

  • Main Applications: Solar heating systems and potable water circuits (DHW).

  • Maximum Collector Flow Rate: 0.7 L/s (42 L/min).

  • Maximum Collector Temperature: 95ºC.

  • Specific Performance: Kvs = 1.5 (for small-scale systems).

  • Connections: 1" external thread (available in various models).

  • Regulation: Determined by the control electronics of the heat pump or main regulation system.

Available Models of the VMC322 Series

The choice of model depends on the comfort temperature required by the installation:

  • VMC322 (1"): Fixed outlet temperature of 45ºC.

  • VMC322 (1"): Fixed outlet temperature of 50ºC.

  • VMC322 (1"): Fixed outlet temperature of 60ºC.


Are you an installer or an industry professional?

Correct selection and installation of the VMC300 series (or the VMC500 for larger systems) is crucial. Contact our specialized Technical Support Service for advice on sizing and connection diagrams. Call us or request technical documentation!

❓ Frequently Asked Questions (FAQ)

1. What is the role of the VMC322 Kit in a heat pump installation?

The kit is commonly used in heat pump installations to act as a hot water diverter between the radiator (or heating) circuit and the potable water production circuit (DHW). The heat pump's electronic unit sends the signal that determines when this diversion occurs.

2. When should I choose the VMC500 Series instead of the VMC322?

The VMC322 is designed for more compact solar heating systems with a Kvs of 1.5. If your installation is larger and requires a higher flow rate to handle more consumption points or larger collectors, you should consult and purchase the ESBE VMC500 Series, designed for higher performance.

3. How does the anti-scald safety function work?

This is a critical passive safety function. The internal mechanism automatically shuts off the hot water flow to the consumption point if it detects an interruption or insufficient pressure in the cold water line, thereby preventing an uncontrolled increase in outlet temperature.

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