Expansion Tank Cimm ERE CE 18 L

Product detailed description

Expansion tanks are essential components in closed heating systems, where water expands due to temperature changes. This expansion must be absorbed to prevent pressure surges that could damage the system. The Cimm ERE CE 18 L is suitable for residential and commercial buildings with hydronic heating systems, including underfloor heating and central heating units. It is commonly installed in mechanical rooms, boiler houses, or utility areas where space allows for vertical installation. The tank must be positioned in a location that allows for easy access for inspection and maintenance, and where the system’s expansion can be effectively managed without risking overpressure.

When integrating an expansion tank into a heating system, it is important to consider the system’s volume, the type of fluid used, and the expected temperature fluctuations. The tank must be sized to accommodate the maximum expansion volume without exceeding the tank’s capacity. In multi-zone systems, the tank must be sized to handle the combined expansion of all zones. The Cimm ERE CE 18 L is suitable for systems with moderate expansion requirements and is typically used in smaller to medium-sized installations.

Technical parameters

Height	395 mm
Article number	820018
Name/volume	ERE CE 18 L
Diameter	285 mm
Connection thread	M 3/4 inch G
Operating pressure	1.5 bar
Maximum overpressure	4.0 bar
Operating temperature	-10+100 °C
Color	White
EAN	8033003528129
Code	831840
Brand	Cimm

The technical parameters of the Cimm ERE CE 18 L are crucial for proper sizing and system integration. The operating pressure of 1.5 bar indicates the maximum pressure the tank can safely handle during normal operation. The maximum overpressure of 4.0 bar is the pressure threshold at which the tank must not be operated to avoid damage. The temperature range of -10 to 100°C ensures compatibility with a wide range of heating applications, including those with seasonal temperature variations. The tank’s dimensions (height 395 mm, diameter 285 mm) determine its physical space requirements and must be considered during installation planning.

Installation and connection

The Cimm ERE CE 18 L is connected to the system via an M 3/4 inch G thread. This connection must be made using a compatible pipe fitting and sealed with an appropriate gasket or thread sealant to prevent leaks. The tank should be installed in a vertical position, with the connection point at the bottom. It is important to ensure that the tank is not subjected to mechanical stress from adjacent components or piping. A pressure gauge and safety valve should be installed in the system to monitor and control pressure levels. Common installation mistakes include incorrect orientation, insufficient space for maintenance access, and failure to account for thermal expansion in the piping system.

Compatibility and accessories

The Cimm ERE CE 18 L is compatible with standard heating systems that use water as the heat transfer medium. It is suitable for use with boilers, heat pumps, and underfloor heating systems. To ensure proper operation, the tank should be connected to the system’s expansion line, typically near the boiler or heat source. Accessories such as pressure gauges, safety valves, and isolation valves may be required for full system functionality. These components are not included with the tank and must be ordered separately. The tank is not compatible with systems using glycol-based fluids unless specified in the manufacturer’s technical documentation.

Technical background for designers

The Cimm ERE CE 18 L operates on the principle of a diaphragm or bladder separating the air and water compartments. As the system water expands, it compresses the air in the tank, allowing the tank to absorb the excess volume without increasing system pressure. The tank is constructed from durable materials that resist corrosion and thermal stress. The white exterior indicates a standard coating suitable for indoor environments. The tank’s performance depends on the correct pre-charge pressure, which must be set according to the system’s operating conditions. The tank’s integration into the system must account for the total system volume, fluid type, and expected temperature range to ensure long-term efficiency and service life.

Service and operation

Regular inspection of the Cimm ERE CE 18 L is recommended to ensure it remains in good working condition. The tank should be checked for leaks, correct pressure levels, and signs of wear or corrosion. The pre-charge pressure should be verified periodically and adjusted if necessary. If the tank shows signs of reduced performance, such as excessive pressure fluctuations or water leakage, it should be replaced. No specific service intervals are provided in the brief, but it is advisable to inspect the tank during routine system maintenance. The tank should be replaced if the diaphragm or bladder is damaged or if the tank cannot maintain the required pressure levels.

Frequently asked questions

Can the Cimm ERE CE 18 L be connected to a central heating system with a boiler?
Yes, the tank is suitable for use with central heating systems that use water as the heat transfer medium. It must be connected to the system’s expansion line and sized according to the system’s volume and operating conditions.

Is the tank suitable for use with glycol-based fluids?
No, the tank is designed for use with water as the heat transfer medium. If glycol-based fluids are used, the tank must be checked for compatibility according to the manufacturer’s technical documentation.

What is the maximum operating pressure of the tank?
The maximum operating pressure is 1.5 bar. The tank must not be operated beyond this pressure to avoid damage or failure.

Can the tank be installed horizontally?
No, the tank must be installed in a vertical position to ensure proper operation and prevent mechanical stress on the internal components.

Documents for download

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