Vaso de expansión para ACS modelo CMR de Ibaiondo - Q-Tech ®

Expansion vessel for DHW, Ibaiondo CMR model

Capacity
Regular price€42,48
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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 Ibaiondo CMR DHW Expansion Vessel is the essential component specifically designed for efficient pressure management in open Domestic Hot Water (DHW) systems. Its specialized design, featuring materials suitable for contact with drinking water, makes it the technical solution that ensures hydraulic safety and water quality in residential and commercial installations.

This diaphragm vessel absorbs the increase in water volume generated by heating, preventing constant dripping from faucets and unnecessary activation of the safety valve.

💧 Sanitary Quality and Distinctive Design

The Ibaiondo CMR model offers a dual design guarantee that adapts to various capacity needs without compromising hygiene or durability.

  • Suitable for Drinking Water: Complies with the EN 13831 standard, ensuring the water maintains its sanitary quality and is safe for human consumption.

  • Optimized Connections: Small models (up to 24 liters) include a dielectric union to isolate the vessel and prevent galvanic corrosion.

  • Professional Durability: Large-capacity models (starting from 35 liters) incorporate a stainless steel water connection, maximizing service life.

  • European Certification: CE-certified product, in compliance with Directive 97/23/EC, for complete technical and legal peace of mind.


Diaphragm Types and Capacity

The CMR model is distinguished by the type of internal diaphragm based on the volume.

Compact CMR Vessel (Up to 24 Liters)

  • Diaphragm: Fixed, suitable for drinking water.

  • Advantage: Compact and economical design, ideal for homes and small systems.

  • Key Detail: Includes a dielectric union for connection.

Modular CMR Vessel (35 to 1000 Liters)

  • Diaphragm: Replaceable, suitable for drinking water.

  • Advantage: Allows for simple and economical long-term maintenance without the need to replace the entire vessel.

  • Key Detail: Water connection made of stainless steel, offering maximum corrosion resistance.


Technical Specifications

The unified technical data sheet for the Ibaiondo CMR model.

  • Primary Use: Open Domestic Hot Water (DHW) systems.

  • Sanitary Standards: EN 13831 (Diaphragm suitable for drinking water).

  • Operating Temperature Range: From -10º to +100º.

  • External Finish: Protective epoxy paint, white.

  • Air Pre-charge Pressure (Factory): 3 bar.

  • Certification: CE (Directive 97/23/EC).

    Ibaiondo expansion vessels for domestic hot water

Frequently Asked Questions (FAQPage)

Why does the 35-liter and larger CMR model have a replaceable diaphragm?

Larger capacity expansion vessels, used in communal or industrial installations, typically require periodic maintenance. The replaceable diaphragm significantly reduces costs and downtime, as there is no need to uninstall the entire vessel in the event of a diaphragm failure.

Is the dielectric union necessary on small models?

Yes, the dielectric union isolates the vessel's steel from the copper or brass piping. This prevents galvanic corrosion (electrolysis) that occurs when dissimilar metals are in contact and facilitates drainage during future inspections.

How should I adjust the 3 bar pre-charge?

The 3 bar pre-charge pressure is the factory setting. For the final installation, the pre-charge should ideally be adjusted to a value slightly lower than the minimum water mains or booster pump pressure, always respecting the maximum pressure of the DHW system.


📞 Specialized Support for DHW Projects

If you are sizing a complex Domestic Hot Water system or need to verify the exact volume for your installation, our technical support service is at your disposal. Contact our experts to receive advice on the Ibaiondo CMR DHW Expansion Vessel and ensure compliance with regulations.

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