2.000 m2 supermarket

In this case study we present the refurbishment of an establishment in the city centre with a sales room of 2,000 m2 in which the owner sought to reduce maintenance and electricity costs in the cooling and climate control installations.

Technical and economic constraints of the project:

In city centres we have technical constraints such as reduced space, need for low noise levels and other economic constraints, such as long opening hours and high cost of electricity and refrigerant gases.

Proposed solution:

In this case, the solution proposed by the installer was to eliminate the old central unit and replace it with ZEAS cooling mini-units, so that the large central cooling unit with a large amount of coolant could be replaced with various smaller central units with a lower coolant load and less risk of leakage of the total load, on sectorising the new installation.

Benefits of the proposed solution:

  • Low coolant load Since 2005, in Spain there has been an environmental tax on coolants which have the highest direct impact on global warming . ZEAS central units use an environmentally-friendly coolant, R-410 A, which has a low environmental tax. Additionally, coolant R-410 A has a greater cooling potential than traditional refrigerants, for this reason, in order to produce the same power, it only requires half the number of kgs of refrigerant Less kgs at a lower environmental cost reduces maintenance costs by up to 70% with respect to traditional systems.
  • Low noise level: ZEAS central cooling units are designed with the same noise level reduction criteria as Daikin’s climate control units, due to which their maximum noise level at full load is only 42 dB(A). This means that neighbours are not disturbed thanks to reduced noise levels.
  • Reduced space: Choosing the ZEAS central cooling units meant a reduction in the space taken up in the machine room of more than 50% with respect to traditional units. In this manner, the store owner can dedicate more space to the storage of products for sale.
  • Energy savings: ZEAS central cooling units include various energy savings measures, such as inverter adjustment of the compressor and fan motors, floating condensation and liquid subcooler. As a result, 25% of energy is saved with respect to the traditional solution previously installed on the premises.


Description of the installed units:

1. List of materials

Model Amount Description
LREQ10BY1 1 LV condensing unit
LREQ15BY1 2 MV condensing unit
LREQ20BY1 1 LV condensing unit
LREQ20BY1 1 MV condensing unit