Low height evaporative condensers with centrifugal fans are the best solution when space is limited, especially in height. They are often designed with a vertical air intake when the installation is in a well. All W-tech evaporative condensers are PED certified.



An evaporative condenser condenses a refrigerant gas from a gaseous state to a liquid. By traveling along a coil from top to bottom sprayed with water with air in countercurrent, the refrigerant gas condenses and changes phase. Medium-large capacity refrigeration systems are usually water-condensed, especially if they use ammonia as a refrigerant. It is essentially a hybrid between an air-cooled condenser and a water-cooled condenser that uses heat rejection principles to follow an evaporative process.

The choice of a water-cooled condensing unit such as W-tech evaporative condensers over air-cooled units is simple:
Consistency of performance

during the year thanks to lower condensation temperatures

Greater thermal efficiency

during the winter/summer months

Optimal performance

thanks to the use of falling recirculating water with counter-current air

Lower electrical absorption

compared to an air unit



W-Tech CCR, low profile centrifugal type evaporative condenser, are manufactured and assembled in accordance to our Quality System certified by ISO 9001.


All our machines as standard are constructed of Magnelis®, which is an environmentally sustainable alloy consisting of 93.5 percent zinc, 3.5 percent aluminum and 3 percent magnesium. The percentage of magnesium allows the self-repair process during cutting and punching operations and protect against deformations. Another characteristic of this material is resistance to corrosion, superior even in environments rich in chloride and ammonia. The maximum workability and greater resistance, compared to other processes, allows the use of a smaller amount of metal coating and therefore a greater lightness of the machines.


The standard unit is constructed of sheet metal panels type Magnelis® (steel, zinc, aluminum, magnesium) panels to grant the maximum level of surface protection. Comparable empirically to a galvanized sheet with over 1000 g/m2 of zinc. The single panels, after the phase of cutting and folding, are assembled with AISI 304 (A2-70) on request AISI 316 (A4-80) e guarnizione in butyl mastic highly adhesive reinforced with polyester mesh inside to guarantee great shape stability and resistance to temperature variations. During the assembling of the structure, welding operations are not foreseen (self-supporting). The coloring of the sheet metal type Magnelis® is a RAL 9006.


Basin section is made with heavy thick panels of Magnelis® ZM310 thick and is equipped with a removable anti-cavitation type filter AISI 304L (to protect the primary circuit pump) and water make-up valve with brass/stainless steel body and stainless steel or polypropylene floating ball. Basin configuration permits water volume reduction and a lower weight when operating. Basin surface is sloping to permit complete drainage, emptying during maintenance and preventing then the growth of bacteria. All the unit connections are in galvanized steel (AISI 304L on request).


Standard heat exchange coil is made of smooth carbon steel (AISI 304L on request) tubes (finned on request) of suitable diameter and thickness, following our proprietary design. Coil is hot-dip galvanized according to UNI EN ISO 1461:2009 to ensure a perfect corrosion protection. After that, coil is tested in accordance to PED-CE rule.
Coil is delivered filled with nitrogen at a pressure of 3 bar.


Water is evenly distributed by a piping system inside the machine made of PVC with sheet metal distribution box Magnelis®. Spray nozzles are of suitable diameter to prevent any clogging and are made in ABS and easily replaceable in case of maintenance.



Centrifugal fans, forward blades type, are made in galvanized steel statically and dynamically balanced. Fans are assembled on a painted steel shaft supported at both ends by self- aligning ball bearings, supports in cast iron. Protection fans grids in galvanized steel, are placed as for the most recent safety rule. Motors, IE3 efficiency class, with mechanical protection IP55, F insulation class, continue service S1, B3 form, are assembled on strong adjustable mechanical slides made in galvanized steel and placed in a position protected from atmospheric agents. Motion transmission is realized by “V” belts, calculated at 150% of nominal power. Motors are suitable to use together with frequency inverter (VSD-Inverter) 30-50 Hz. Electric motors are in accordance to the EU 2019/1781 norm. The terminals for power connection and the connection of any extras optional (anti-condensation heater and ptc thermistor) are inside the terminal box of the electric motor.


Drift eliminators are made in PVC (PP on request) and divided in various sections to facilitate their removal in case of replacement or inspection of ventilation and water distribution system. The used drift eliminators allow a passage of drops equal to 0.001% of the droplets present at the entrance, removing water loss, potential aerosols drift that might contain Legionella bacteria.


All components are supplied assembled. Each unit, prior to delivery, undergoes hydraulic testing to ensure that there are no water leaks in the tank, and electrical testing to verify that the electric motors have a power draw in line with the nameplate data.


Catalog list.



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