ELDOM BCE 500

ELDOM BCE 500 cooling / heating buffer tank for heat pumps

The ELDOM BCE 500 cooling / heating buffer tank is designed for higher-output heat pump heating and cooling systems where efficient storage of the generated heat energy, smooth system operation and protection of the heat generator are important. Connected into the central heating system, the buffer tank captures and stores the energy not used directly for heating or cooling, and then feeds it back into the system as needed.

Using it reduces the number of on/off cycles of the heat pump, boiler or other heating/cooling appliance, allowing the system to operate in a more balanced way. It can be particularly useful in systems with multiple heating circuits or circuits operating at different temperatures, as it can help moderate the resulting loads.

The tank is made of rolled steel sheet with internal enamelling and tank protection with 2 anodes. The fixed, rigid PU insulation and the water-repellent PVC outer jacket help retain heat, while the design rated for 6 bar operating pressure ensures reliable use. The ELDOM BCE 500 is prepared for both wall-hung and floor-standing installation, so it can be integrated into a variety of mechanical installations.

The tank features 2 x 4 internally threaded 2” heating system connections, along with 1 x 6/4” auxiliary socket and 2 x 1/2” measuring points for temperature sensors.

A factory heating element with a 180 mm diameter and an output between 3 and 12 kW can be fitted into the lower inspection opening. The tank's 6/4” auxiliary socket also allows an additional heating unit to be installed. This means the water in the heating system can be heated even without operating the central heat generator, such as a boiler.

Thanks to the internal enamelling and official drinking water certification, the tank is also suitable for storing domestic hot water or cold water, so it can also be used as a DHW tank.

Key features

• 500-litre cooling / heating buffer tank for heat pump systems
• Rolled steel sheet tank body
• Internal enamelling and tank protection with 2 anodes
• Fixed, rigid PU insulation
• Water-repellent PVC outer jacket
• 2 x 4 internally threaded 2” heating system connections
• 1 x 6/4” auxiliary socket
• 2 x 1/2” measuring points for temperature sensors
• Maximum operating pressure: 6 bar
• Operating temperature range: 7–95 °C
• Total tank body diameter: 800 mm
• Energy efficiency class: B
• Prepared for wall-hung or floor-standing installation
• Can also be used as a DHW tank
• Holds official drinking water certification

Standard equipment

• Steel tank body with insulation
• External PVC jacket
• 3 threaded feet
• Installation manual in Hungarian
• 10-year warranty on the tank body's weld quality and against water leakage

Useful information about capacity

For hot water tanks, a distinction is often made between nominal, gross and net capacity. The nominal capacity is a rounded figure intended for guidance, which typically also appears in the product name. The gross capacity refers to the actual internal tank volume, while the net capacity indicates the usable water volume. For tanks without a heat exchanger, the gross and net capacities are typically identical.

Recommended use

The ELDOM BCE 500 buffer tank is recommended for heat pump heating and cooling systems, mechanical installations requiring larger water volumes, and multi-circuit systems. Using it can make system operation more stable, reduce the start-up frequency of the heat generator, and allow the generated heat energy to be managed more efficiently.