Solar expansion vessel IBAIONDO 24L

Product detailed description

Solar expansion vessels are essential components in closed-loop solar thermal systems, where thermal expansion of the heat transfer fluid must be accommodated safely. These systems are typically found in residential and commercial solar water heating and space heating applications. Installers working with solar collectors and heat exchangers must ensure that the expansion vessel is correctly sized and integrated to maintain system pressure and prevent over-pressurisation. The IBAIONDO 24L model is specifically designed for use in closed solar circuits, where the working conditions can exceed the parameters of standard heating system vessels.

When designing or maintaining solar thermal systems, it is crucial to understand the role of the expansion vessel in managing thermal expansion and maintaining system integrity. The vessel must be installed in a location that allows for easy access for inspection and maintenance, and it must be compatible with the glycol-based heat transfer fluid typically used in solar applications. The vessel's ability to withstand short-term temperature peaks is a key factor in ensuring the longevity and efficiency of the system.

Technical parameters

Type	Solar expansion vessel
Volume	24 l
Max. working pressure	10 bar
Pre-charge pressure	2.5 bar
Working temperature	-10°C to +100°C (peaks up to 130°C)
Membrane	DIN 4807-3
Max. glycol content	50 %
Colour	White
Connection	3/4 inch
Net weight	4.020 kg
Warranty	2 years
EAN	5900308748800
Code	NS.24.IB
Brand	Hydroland

The technical parameters of the IBAIONDO 24L solar expansion vessel are critical for proper system sizing and selection. The 24L capacity is suitable for systems with a moderate heat transfer fluid volume, and the maximum working pressure of 10 bar ensures compatibility with standard solar system pressure ranges. The pre-charge pressure of 2.5 bar is set to accommodate the expected thermal expansion under normal operating conditions. The working temperature range, including short-term peaks up to 130°C, allows the vessel to handle the thermal stress that can occur during collector stagnation in hot weather.

Installation and connection

The IBAIONDO 24L solar expansion vessel is equipped with a 3/4 inch threaded connection, which must be matched with the corresponding pipe size in the system. During installation, the vessel should be mounted in a stable position, preferably vertically, to ensure proper fluid distribution and membrane function. The pre-charge pressure must be verified using a pressure gauge before system commissioning. Common installation mistakes include incorrect orientation, which can lead to uneven fluid distribution, and failure to check the pre-charge pressure, which can result in system pressure fluctuations. It is also important to ensure that the vessel is not subjected to mechanical stress from adjacent components.

Compatibility and accessories

The IBAIONDO 24L solar expansion vessel is designed for use in closed solar systems and is compatible with glycol-based heat transfer fluids up to 50% concentration. It is typically used in conjunction with solar collectors, heat exchangers, and system pumps. No additional accessories are required for basic installation, but a pressure gauge may be recommended for monitoring system pressure during operation. This vessel is not intended for use in open systems or with other types of heat transfer media.

Technical background for designers

The IBAIONDO 24L solar expansion vessel operates on the principle of separating the heat transfer fluid from the compressed air or gas within the vessel using a flexible membrane. This membrane is constructed according to DIN 4807-3 standards and is designed to withstand the thermal and chemical stresses associated with solar applications. The powder-coated steel construction provides corrosion resistance and durability in outdoor or semi-outdoor environments. The vessel's ability to handle short-term temperature peaks up to 130°C is a key factor in its suitability for solar systems, where collector stagnation can lead to elevated temperatures. The vessel's integration into the system must account for the expected thermal expansion and the need to maintain stable pressure levels to prevent system failure.

Service and operation

The IBAIONDO 24L solar expansion vessel requires minimal maintenance during normal operation. The pre-charge pressure should be checked periodically to ensure it remains within the specified range. If the pressure drops below the recommended level, it must be adjusted using a suitable pump. No other service intervals are specified in the product documentation. During routine inspections, the vessel should be checked for signs of mechanical damage, corrosion, or membrane degradation. Any issues should be addressed promptly to prevent system pressure fluctuations and potential damage to other components.

Frequently asked questions

Can the IBAIONDO 24L be connected to an open heating system?
No, this vessel is specifically designed for closed solar systems and is not suitable for open systems.

What is the maximum glycol concentration supported by this vessel?
The vessel supports a maximum glycol concentration of 50% in the heat transfer fluid.

Is the membrane compatible with high-temperature solar applications?
Yes, the DIN 4807-3 membrane is designed to withstand short-term temperature peaks up to 130°C, making it suitable for solar applications.

Can the pre-charge pressure be adjusted after installation?
Yes, the pre-charge pressure can be adjusted using a suitable pump if the pressure drops below the recommended level.