Expansion vessel for ACS model CMR from Ibaiondo
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He ACS CMR Ibaiondo Expansion Vessel It is the essential component specifically designed for efficient pressure management in Open Domestic Hot Water (DHW) SystemsIts specialized design, with materials suitable for contact with drinking water, makes it the technical solution that guarantees hydraulic safety and water quality in domestic and commercial installations.
This membrane vessel absorbs the increase in water volume generated by heating, preventing constant dripping in taps and unnecessary activation of the safety valve.
The Ibaiondo CMR model offers a double design guarantee that adapts to various capacity needs without compromising hygiene or durability.
Suitable for drinking water: It complies with the EN 13831 standard, ensuring that the water maintains its sanitary quality and is safe for human consumption.
Connections Optimization: Small models (up to 24 liters) include a dielectric sleeve to isolate the vessel and prevent galvanic corrosion.
Professional Durability: The high-capacity models (starting from 35 liters They incorporate a water connection of stainless steelmaximizing useful life.
European Certification: CE certified product, in accordance with Directive 97/23/EC, for complete technical and legal peace of mind.
The CMR model differs in the type of internal membrane according to the volume.
Membrane: Non-replaceable, suitable for drinking water.
Advantage: Compact and economical design, ideal for homes and small systems.
Key Detail: Includes dielectric sleeve for connection.
Membrane: Replaceable, suitable for drinking water.
Advantage: It allows for simple and economical long-term maintenance, without the need to replace the entire glass.
Key Detail: Water connection made of stainless steel, offering maximum resistance to corrosion.
The unified technical data sheet for the CMR model of Ibaiondo.
Primary Use: Open Domestic Hot Water (DHW) systems.
Health Regulations: EN 13831 (Membrane suitable for drinking water).
Operating Temperature Range: From -10º until +100º.
Exterior Finish: Protective epoxy paint, white color.
Air Precharge Pressure (Factory Set): 3 bar.
Certification: EC (Directive 97/23/EC).

Larger capacity expansion vessels, used in community or industrial installations, usually require periodic maintenance.The replaceable membrane significantly reduces costs and downtime, as it is not necessary to remove the entire vessel in the event of membrane failure.
Yes, the dielectric sleeve isolates the steel vessel from the copper or brass pipe. This prevents galvanic corrosion (electrolysis) that occurs when dissimilar metals are in contact and facilitates draining during future servicing.
The preload pressure of 3 bar This is the factory setting. For final installation, the pre-charge should ideally be adjusted to a value slightly lower than the minimum pressure of the water mains or pressure booster, always respecting the maximum pressure of the domestic hot water system.
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 ACS CMR Ibaiondo Expansion Vessel and ensure compliance with regulations.