Expansion Tank Cimm ERE CE 300 L

Product detailed description

Expansion tanks are essential components in closed heating systems, ensuring safe operation by accommodating thermal expansion of the fluid. This model is commonly used in residential and commercial buildings where central heating systems require pressure stabilisation. Installers working on boiler systems, heat pumps or underfloor heating should consider the tank’s dimensions and pressure rating during planning. The tank must be installed in a location accessible for inspection and maintenance, typically near the boiler or circulation pump.

For systems with high water volume, such as those serving large buildings or multiple zones, the tank’s 300 L capacity is critical for maintaining stable pressure levels. The tank’s cylindrical shape allows for efficient space utilisation in mechanical rooms. The operating temperature range ensures compatibility with both low-temperature and conventional heating systems. The red colour provides visual identification for system diagnostics and maintenance.

Technical parameters

Height	1220 mm
Item number	820300
Name/capacity	ERE CE 300 L
Diameter	650 mm
Connection thread	M 1 inch G
Operating pressure	1.5 bar
Maximum pressure	6.0 bar
Operating temperature	-10+100 °C
Color	red
EAN	8033003527634
Code	820300
Brand	Cimm

The working pressure of 1.5 bar indicates the pressure at which the tank operates under normal conditions, while the maximum pressure of 6.0 bar defines the upper limit for safe operation. The temperature range of -10 to 100°C allows use in environments with freezing risk and high-temperature heating systems. The tank’s dimensions must be considered when selecting installation locations with sufficient clearance for servicing and inspection.Installation and connection The tank is connected via a standard M 1 inch G thread, compatible with most domestic and industrial heating systems. The installation process involves positioning the tank vertically, ensuring the connection point aligns with the system’s expansion line. It is important to verify that the pipe size matches the tank’s inlet and that the connection is sealed properly to prevent leaks. Common installation errors include incorrect orientation, failure to support the tank’s weight, and neglecting to isolate the tank during system pressurisation. Installers should also ensure that the tank is installed after the safety valve and pressure relief valve to prevent overpressure situations. The tank must not be subjected to mechanical stress from adjacent components. A correct installation includes verifying the tank’s orientation, checking the integrity of the connection and ensuring that the system pressure does not exceed the tank’s rated maximum.

Compatibility and accessories

The Cimm ERE CE 300 L expansion tank is compatible with central heating systems using water as the heat transfer medium. It integrates with boilers, heat pumps and solar thermal systems that require expansion management. For optimal performance, it should be used in conjunction with a pressure gauge and safety valve, both of which are not included with the tank. The tank’s red finish is standard and does not affect compatibility with other components. No alternative or related products are available for this model. Installers should ensure that all necessary accessories are ordered separately to complete the system configuration. The tank’s dimensions and connection type make it suitable for a wide range of standard heating installations.

Technical background for designers

The tank operates on the principle of a pre-pressurised chamber that absorbs excess fluid volume caused by thermal expansion. The internal diaphragm separates the air chamber from the water chamber, maintaining a balanced pressure within the system. The tank is constructed from durable materials capable of withstanding long-term exposure to water and fluctuating temperatures. The cylindrical shape optimises internal volume and minimises stress points in the tank’s structure. Designers should account for the tank’s dimensions and pressure rating when planning system layouts. The tank’s operating temperature range ensures compatibility with both low-temperature and conventional heating systems. The tank’s service life depends on the quality of the internal diaphragm and the stability of the system pressure. Regular monitoring of the tank’s pressure and condition is recommended to ensure continued performance.

Service and operation

Routine checks should include inspecting the tank for signs of wear, leakage or pressure loss. The tank does not require scheduled maintenance, but periodic verification of the system pressure is recommended. If the tank shows signs of reduced effectiveness, such as frequent pressure fluctuations or unusual noise, it should be inspected by a qualified technician. No specific service intervals are provided for this model. During operation, the tank should remain isolated from direct mechanical stress and extreme environmental conditions. The tank’s internal diaphragm is a critical component that should not be exposed to contaminants or excessive pressure. The tank’s design allows for straightforward replacement if necessary, without requiring major system modifications.

Frequently asked questions

Can the Cimm ERE CE 300 L be connected to a heat pump system?
Yes, the tank is suitable for use with heat pump systems that require expansion management. The tank’s pressure and temperature ratings are compatible with typical heat pump operating conditions.

Is the tank suitable for outdoor installation?
No, the tank is designed for indoor use only. The operating temperature range excludes prolonged exposure to freezing conditions that could affect the tank’s integrity.

What is the recommended location for installation?
The tank should be installed in a location with sufficient space for access and inspection, typically near the boiler or circulation pump. Avoid locations with high vibration or mechanical stress.

Can the tank be used with glycol-based systems?
No information is provided regarding compatibility with glycol-based systems. Refer to the manufacturer’s technical documentation for confirmation.

Documents for download

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