Pressure expansion vessel - heating and cooling systems - 80l; 10bar; 3/4"; vertical with base. IVAR.ERCE 80 - AQUAHOT

Product detailed description

Pressure expansion vessels play a critical role in closed heating and cooling systems by accommodating thermal expansion of the fluid. These vessels are commonly installed in residential, commercial and industrial buildings where central heating systems, heat pumps or chilled water systems are in use. The IVAR A112L37 is specifically designed for integration into such systems, ensuring stable pressure levels and preventing damage from overpressure. Installers typically encounter these vessels in systems where temperature fluctuations are common, such as in underfloor heating, solar thermal systems or combined heat and power units.

Proper selection and installation of an expansion vessel is essential for system performance and longevity. The vessel must be sized according to the system's volume and operating parameters to ensure it can handle the expected expansion. The IVAR A112L37 is suitable for systems with a working pressure up to 10bar and a fluid temperature range of -10°C to +99°C, with a recommended operating temperature of up to +80°C. The vessel's vertical orientation with base allows for secure mounting in tight spaces or standard mechanical rooms.

Technical parameters

Code	A112L37
Brand	IVAR

The 80L capacity and 10bar pressure rating of the IVAR A112L37 are key factors in determining its suitability for a given system. The vessel is designed for systems with a maximum non-freezing fluid concentration of 50%, making it compatible with glycol-based mixtures commonly used in low-temperature applications. The operating temperature range ensures compatibility with a wide range of heating and cooling systems, including those with mixed media or seasonal temperature variations.

Installation and connection

The IVAR A112L37 is equipped with a 3/4 inch connection, which must be matched with the corresponding pipe size in the system. The vessel should be installed in a location that is easily accessible for inspection and maintenance, and where it is not subject to mechanical stress or vibration. The vertical orientation with base requires secure mounting to prevent tilting or movement. During installation, the system pressure must be checked to ensure it is within the vessel's operating range. Common installation errors include incorrect orientation, failure to secure the base properly, or connecting to a system with incompatible pressure or temperature parameters.

Compatibility and accessories

The IVAR A112L37 is compatible with a wide range of heating and cooling systems, including those with mixed media or seasonal temperature variations. It is typically used in conjunction with pressure-reducing valves, safety valves and temperature sensors to ensure system stability. When installing the vessel, it is important to ensure that all system components are compatible with the vessel's pressure and temperature ratings. Additional components such as mounting brackets or pipe fittings may be required depending on the installation site and system configuration.

Technical background for designers

The IVAR A112L37 operates on the principle of separating the expansion fluid from the system using an internal diaphragm made of SBR (styrene-butadiene rubber). This diaphragm allows the vessel to absorb thermal expansion while maintaining a stable pressure within the system. The SBR material is selected for its resistance to temperature fluctuations and compatibility with a range of fluids, including water and glycol mixtures. The vessel's vertical orientation with base ensures that the diaphragm remains in a stable position during operation, reducing the risk of mechanical failure. The vessel's design also allows for integration into systems with limited space, making it suitable for retrofitting or new installations in compact mechanical rooms.

Service and operation

Regular inspection of the IVAR A112L37 is recommended to ensure it is functioning correctly. Key checkpoints include verifying the system pressure, checking for signs of leakage or corrosion, and ensuring the vessel is securely mounted. The vessel should be inspected for any changes in performance, such as unusual pressure fluctuations or reduced expansion capacity. No specific service intervals are provided in the technical data, but maintenance should be carried out according to the manufacturer's recommendations and local regulations.

Frequently asked questions

Can the IVAR A112L37 be used with glycol-based fluids?
Yes, the vessel is suitable for use with glycol-based fluids, provided the concentration does not exceed 50%. This makes it compatible with non-freezing mixtures commonly used in low-temperature applications.

Is the IVAR A112L37 suitable for outdoor installation?
No, the vessel is designed for indoor use only. It should be installed in a location that is protected from extreme weather conditions and temperature fluctuations outside its operating range.

Can the IVAR A112L37 be mounted horizontally?
No, the vessel is designed for vertical installation with a base. Mounting it horizontally may affect its performance and could lead to premature failure of the internal diaphragm.

What is the maximum operating temperature for the IVAR A112L37?
The recommended operating temperature is up to +80°C, although the vessel can tolerate temperatures up to +99°C.