Expansion Tank CIMM ERE CE 500 L

Product detailed description

Expansion tanks are essential components in closed heating systems, ensuring pressure stability and compensating for thermal expansion of the fluid. The CIMM ERE CE 500 L is suited for installations in residential, commercial and industrial buildings where larger system volumes require a higher capacity expansion vessel. It is commonly used in central heating systems with boilers, heat pumps or solar thermal collectors. The tank is installed in the primary circuit, typically after the boiler or heat source, and connected to the system via a dedicated pipe. It is important to ensure that the tank is positioned at a height that allows for proper air venting and that the system is correctly balanced to avoid over-pressurisation.

When integrating an expansion tank into a system, the designer must account for the total system volume, the type of fluid, and the expected temperature range. The tank must be sized to accommodate the maximum expansion of the system under normal operating conditions. The CIMM ERE CE 500 L is suitable for systems with a higher thermal mass, such as those with large radiators, underfloor heating or buffer tanks. The tank is not intended for use with open systems or for applications involving aggressive media.

Technical parameters

Height	1535 mm
Item number	820500
Name/capacity	ERE CE 500 L
Diameter	750 mm
Connection thread	M 1" G
Operating pressure	2.5 bar
Maximum overpressure	6.0 bar
Operating temperature	-10+100 °C
Colour	red
EAN	8033003527689
Code	820500
Brand	Cimm

The technical parameters of the CIMM ERE CE 500 L are critical for correct system integration. The 500 L capacity ensures it can handle the thermal expansion of larger systems, while the operating pressure of 2.5 bar and maximum overpressure of 6.0 bar define the limits within which the tank can safely function. The temperature range of -10+100 °C allows for use in both heating and cooling applications. These parameters must be matched with the system design to ensure long-term reliability and prevent damage due to pressure or temperature fluctuations.

Installation and connection

The CIMM ERE CE 500 L is installed using a M 1″ G threaded connection, which must be tightened to the manufacturer's specifications. The installation should be carried out in a location that is easily accessible for maintenance and inspection. It is important to ensure that the tank is not subject to mechanical stress from the piping, and that the connection is properly sealed to prevent leaks. A pressure gauge and safety valve should be installed upstream of the tank to monitor and control system pressure. Common installation errors include incorrect orientation, failure to bleed the system after installation, and neglecting to check the pre-charge pressure of the internal bladder. These issues can lead to reduced performance or premature failure.

Compatibility and accessories

The CIMM ERE CE 500 L is compatible with standard heating systems that use water or glycol-based fluids. It is designed for use with closed-loop systems and should not be connected to open systems or those with high levels of suspended solids. To ensure proper operation, it is recommended to install a pressure relief valve and a pressure gauge in the system. Additional accessories such as mounting brackets or insulation may be required depending on the installation environment. No related products are specified for this model.

Technical background for designers

The CIMM ERE CE 500 L operates on the principle of a diaphragm or bladder separating the air and fluid compartments. As the system heats up, the fluid expands and compresses the air in the tank, maintaining a stable pressure. The tank is constructed from durable materials capable of withstanding the operating conditions specified. The internal bladder is typically made from butyl rubber or similar material, chosen for its resistance to thermal cycling and chemical stability. The tank's performance is influenced by the pre-charge pressure, system temperature, and the type of fluid used. Proper integration into the system ensures that the tank functions efficiently and extends its service life.

Service and operation

Regular inspection of the CIMM ERE CE 500 L is recommended to ensure continued performance. Key checkpoints include the pre-charge pressure, the integrity of the bladder, and the absence of leaks or corrosion. The tank should be checked for signs of over-pressurisation or under-pressurisation, which can affect system stability. No specific service intervals are provided in the technical data. If the tank is suspected of failure, it should be isolated and replaced to prevent damage to the system. Maintenance should be carried out by a qualified technician using appropriate tools and following the manufacturer's guidelines.

Frequently asked questions

Can the CIMM ERE CE 500 L be connected to a solar thermal system?
Yes, the tank can be used in solar thermal systems provided the operating conditions match the technical specifications. The temperature range and pressure limits must be verified for compatibility.

Is the tank suitable for use with glycol mixtures?
Yes, the tank is compatible with glycol-based fluids as long as the concentration and properties are within the manufacturer's specifications.

Can the tank be installed in a vertical position?
Yes, the tank can be installed vertically. However, it must be secured to prevent movement and ensure proper air venting.

What is the maximum distance between the tank and the boiler?
There is no specified maximum distance, but the tank should be installed close enough to the boiler to ensure effective pressure regulation and minimal piping losses.

Documents for download

• Dokument na stiahnutie (PDF)
• Dokument na stiahnutie (PDF)
• Dokument na stiahnutie (PDF)