Expansion Tank Cimm ERE CE 400 L

Product detailed description

Expansion tanks are essential components in closed heating systems, compensating for thermal expansion of water and maintaining stable pressure levels. In residential and commercial buildings, these tanks are typically installed in boiler rooms, utility areas or near the heating plant. They help prevent overpressure and damage to system components. The Cimm ERE CE 400 L model is suited for systems with higher thermal loads, such as large residential complexes, industrial facilities or commercial buildings with extensive heating requirements. Installers should ensure the tank is mounted vertically and connected to the system at the correct point to allow for proper function.

Proper sizing of the expansion tank is crucial for system efficiency and longevity. The tank must accommodate the maximum volume of water expansion expected under normal operating conditions. This is determined by factors such as system volume, temperature range and the type of heat source. The Cimm ERE CE 400 L provides a large internal volume to handle significant thermal expansion, making it suitable for systems with high water content or frequent temperature fluctuations.

Technical parameters

Height	1550 mm
Item number	820400/001
Name/capacity	ERE CE 400 L
Diameter	650 mm
Connection thread	M 1" G
Operating pressure	2.5 bar
Maximum overpressure	6.0 bar
Operating temperature	-10+100 °C
Color	red
EAN	8033003527665
Code	820400/001
Brand	Cimm

The technical parameters of the Cimm ERE CE 400 L are key to determining its suitability for a given application. The 400 L capacity is appropriate for systems with a large water volume, while the M 1″ G connection ensures compatibility with standard piping. The operating pressure of 2.5 bar and maximum overpressure of 6.0 bar define the pressure range within which the tank can function safely. The temperature range of -10 to 100°C indicates that the tank is suitable for both heating and cooling applications, including those with glycol mixtures.

Installation and connection

Installation of the Cimm ERE CE 400 L should be carried out by qualified personnel following the manufacturer’s guidelines. The tank must be mounted vertically to ensure proper air separation and water flow. The M 1″ G connection requires a compatible pipe fitting with a male thread of the same size. Prior to installation, the system should be depressurised and the tank inspected for any visible damage. The tank should be connected to the expansion line, typically between the boiler and the safety valve. A common mistake is incorrect orientation, which can lead to poor performance and premature failure. Installers should also ensure that the tank is not overfilled and that the pressure relief valve is correctly set.

Compatibility and accessories

The Cimm ERE CE 400 L is compatible with a wide range of heating systems, including those using natural gas, oil or electric boilers. It is suitable for use with both closed and open expansion systems, provided the pressure and temperature limits are respected. To ensure full functionality, the tank should be connected to a pressure relief valve and a safety valve. Additional accessories such as isolation valves and pressure gauges may also be required, depending on the system design. No related products are specified for this model.

Technical background for designers

The Cimm ERE CE 400 L operates on the principle of thermal expansion compensation. As water heats up, it expands, increasing the pressure within the closed system. The expansion tank provides a space for this excess volume, preventing damage to the system components. The tank is typically constructed from durable materials that can withstand the specified pressure and temperature range. The internal diaphragm or bladder separates the water from the air or gas chamber, ensuring that the system remains sealed. The service life and efficiency of the tank depend on the quality of the internal components, the frequency of pressure checks and the overall system maintenance. Designers should consider the tank’s dimensions and weight when planning the installation location, ensuring that the mounting surface is stable and accessible.

Service and operation

Regular maintenance of the Cimm ERE CE 400 L is essential to ensure continued performance. Installers should periodically check the tank’s pressure and ensure that it is within the specified range. The tank should also be inspected for signs of corrosion, leaks or damage to the internal components. No specific service intervals are provided in the brief, so maintenance should be carried out according to the manufacturer’s recommendations or as part of routine system checks. In the event of a malfunction, the tank should be isolated from the system and inspected by a qualified technician.

Frequently asked questions

Can the Cimm ERE CE 400 L be connected to a system with glycol?
Yes, the tank is suitable for use with glycol-based systems, provided the temperature and pressure limits are within the specified range.

Is the Cimm ERE CE 400 L suitable for outdoor installation?
No, the tank is designed for indoor use only, as it is not weatherproof and may be damaged by exposure to the elements.

Can the tank be used in a system with multiple boilers?
Yes, the tank can be used in multi-boiler systems, provided the total system volume and pressure requirements are within the tank’s capacity and pressure range.

What should be done if the tank shows signs of overpressure?
If the tank is experiencing overpressure, the system should be depressurised and the pressure relief valve checked for proper function. If the issue persists, the tank should be inspected by a qualified technician.

Documents for download

• Documentation for download (PDF)
• Documentation for download (PDF)
• Documentation for download (PDF)