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05.17 207646 Rev.103
EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
DESCRIPTION OF THE UNIT
The EKWXA / EKWXBA units are compact reversible WATER / AIR units for the production of hot / cold water. They are designed for
outdoor installation. Supplied with R-410A refrigerant charge, ready for installation.
These units are manufactured under a strict quality control throughout their process and once finished are tested in the factory, verifying
the correct operation of all its components.
The unit is composed by:
Hermetic compressor, alternative, with wide operating limits. It incorporates thermal protection of the windings (without requiring
additional protection), the oil load for its perfect lubrication and internal damping system. The compressor is mounted on the chassis
with shock absorbers and is acoustically insulated. All this guarantees a silent operation and without vibration.
External coils built with copper tube without welds and expanded in aluminum fins. Incorporate distributor with neck and calibrated
orifice (nozzle) to improve distribution of the gas in Cold mode.
Coolant-water exchanger made from stainless steel plates (AISI 316) welded with bronze base. It is perfectly insulated with insulating
heat material to prevent the exchange of heat with the outside. It has built-in electrical heaters as an anti-ice protection to avoid the
risks of breaking it by freezing the water in case of lack of flow.
Fan motor mounted with a square base and circular inlet embouchure suitable for the aerodynamic performance of the flow driven
by the fan itself. Ready for outdoor installation, totally closed, with permanent lubrication. It consists of aluminum blades designed
to obtain a low sound level, inserted into the outer rotor of a high efficiency motor, with IP-54 protection and class F winding
insulation. It has internal thermal probes incorporated for its protection, as well as external security grid.
Thermostatic expansion valve with MOP at the plate exchanger inlet for cooling mode operation. The expansion in the external coil,
when necessary (operation in heating mode), is realized through a hole.
Safety pressure switch connected to the compressor output (maximum pressure point) of manual reset. Its cut is calibrated at a
pressure of 42 bars.
Bidirectional dehydrator filter type mounted on the liquid line. It consists of a solid desiccant core that minimizes vibration and friction
during the operation of the equipment besides absorbing excess moisture and filter any impurities.
Tank to contain the variations of the refrigerant charge required by the machine when changing its operation between Cool/Heat.
Check valves only on Heat Pump units to bypass the expansion system of the secondary exchanger block. Cold mode performs the
bypass to battery, in Heat mode, it is done to the expansion valve.
The sheet metal structure of these equipments is resistant to the weather and is formed by galvanized steel sheet which is applied
an oven painting process by polymerization of powder paint which provides excellent overall coating and especially in corners and
edges. The self-supporting base is constructed with highly rigid steel. The rest of the structure is galvanized steel. The design is
done for an easy maintenance. The finished set has RAL 1013 color.
