Pressure expansion vessel-heating and cooling systems - 250l; 10bar; 1"; vertical with base IVAR.ERCE 250 - AQUAHOT

Product detailed description

Pressure expansion vessels are essential components in closed heating and cooling systems, ensuring stable pressure levels as the system expands and contracts with temperature changes. This model is commonly used in residential and commercial buildings, including multi-family dwellings, industrial facilities, and commercial HVAC systems. Installers and technicians working with hydronic systems must ensure correct sizing and integration to maintain system efficiency and safety.

These vessels are typically installed in mechanical rooms or utility areas, where they are connected to the system via a dedicated pipe. The vessel must be mounted securely and positioned to allow for easy access during maintenance. The vertical orientation with a base ensures stability and minimises space requirements in tight installation environments.

Technical parameters

Code	A112L49
Brand	IVAR

The 250L capacity and 10bar pressure rating are key parameters for determining the vessel's suitability for a specific system. The 1 inch connection size ensures compatibility with standard piping systems. The operating temperature range from -10°C to +99°C allows for use in both heating and cooling applications, although the recommended maximum operating temperature is +80°C. These specifications are critical for proper system design and performance.

Installation and connection

Installation should be carried out in accordance with the manufacturer's guidelines and local regulations. The vessel must be mounted vertically with the base in contact with a stable surface. The 1 inch connection requires appropriate fittings and sealing to prevent leaks. It is important to check the pressure settings and ensure that the vessel is pre-charged with air to the correct pressure level before commissioning. Common installation errors include incorrect orientation, failure to secure the base, and improper connection to the system piping.

Compatibility and accessories

This pressure expansion vessel is compatible with IVAR's range of heating and cooling system components. It is suitable for use with glycol-based heat transfer fluids, provided the concentration does not exceed 50%. Additional components such as pressure gauges, safety valves, and control systems may be required for complete system integration. Installers should also consider the need for insulation if the vessel is installed in an area with extreme temperature fluctuations.

Technical background for designers

The vessel operates on the principle of separating the system fluid from the compressed air chamber using an SBR membrane. This ensures that the system remains sealed while allowing for expansion and contraction. The SBR material is chosen for its durability and resistance to temperature and chemical variations. The vessel is integrated into the system to absorb pressure fluctuations and prevent damage to pipes and components. The service life and efficiency of the vessel are influenced by the quality of the installation, the operating conditions, and the maintenance schedule.

Service and operation

Regular inspection is recommended to ensure the vessel is functioning correctly. Key checkpoints include the pressure level, the condition of the membrane, and the integrity of the connections. The vessel should be checked for signs of wear, corrosion, or leakage. If the pressure drops below the recommended level, it should be recharged with air. No specific service intervals are provided in the technical documentation, so maintenance should be carried out as needed based on system performance and visual inspection.

Frequently asked questions

Can the IVAR A112L49 be used with glycol mixtures?
Yes, the vessel is suitable for use with glycol mixtures, provided the concentration does not exceed 50%.

Is the vessel suitable for outdoor installation?
No, the vessel is designed for indoor use. It should be installed in a protected environment to avoid exposure to extreme weather conditions.

What is the maximum operating temperature for the vessel?
The recommended maximum operating temperature is +80°C, although the vessel can withstand temperatures up to +99°C.

Can the vessel be mounted horizontally?
No, the vessel is designed for vertical installation with a base. Horizontal mounting is not supported and may affect performance.