Water Source Units

WS-G - Water Source Units

Cooling and heating units, manufactured in various sizes, for a wide variety of applications for indoor & outdoor installation. Easy access is provided to all internal components. Evaporator for outdoor installation is optional. Units can be manufactured as split (evaporator and condenser) or as packaged one.



Housing construction is made of high quality galvanized metal sheet. Most evaporator units have bottom access opening for more efficient service in split versions.


Units are isolated with 1” neoprene coated thermo-acoustic fiberglass insulation.


WS Models use high quality scroll and rotary compressors


  • High C.O.P
  • Hermetically sealed
  • Extremely quiet operation
  • Complete motor protection
  • Internal and external vibration absorbers
  • Double layered base for extra silencing

Evaporator Coils

Constructed of seamless 7mm or 3/8” corrugated edge aluminum fins in galvanized steel frames. Tubes are mechanically expended into die-formed fin collars, providing a uniform mechanical bond that assures maximum heat transfer efficiency.

Evaporator Fans

Furnished with double-inlet, forward-curved blades, constructed of galvanized steel. Fan units are direct driven with 5 velocity stages, which enable complete suitability for the required pressure. Furthermore, an option to adjust the motor to the customer needs is available. Motors life span is more than 40,000 hours.

Condenser Heat Exchangers

  • Coaxial Tube-in-Tube or Tube-in-Shell heat exchanger
  • Made of inner copper tube and external steel tube Refrigerant System
  • High quality, carefully selected components ensure reliable and efficient system operation
  • Capillary tube for low capacity units (Class A)
  • Expansion valve, sight glass, filter-drier & suction accumulator for high capacity units (Class B)

Electronic Controller

  • Step capacity control, cooling & heating - up to 8 steps
  • Phase control relay – optional Protection Control
  • High Pressure pressurestat in all models
  • Low Pressure pressurestat in all models
  • Overload protection (compressors & fans)
  • Contactor for fire hazard (alarm system) – optional


  • Washable high quality Poli-flo filters – 1/2” thick
  • All filters produced under the highest international fire hazard standards General
  • For more efficient and convenient installation, units can be supplied with left or right piping and drainage each unit is pre-tested and factory-run on packaged versions.

Optional Features

  • Evaporator coil 6 rows deep (or other)
  • Double skin construction
  • Super quiet operation
  • Copper-fin coils, coil coating (Blygold, Thermo-guard, Energy-guard, Epoxy or anti-bacterial coating, hydrophobic or hydrophilic coatings) and marine aluminum fins
  • Capacitors for cos. φ correction
  • High temperature water condensing operation
  • Mixing box with manual or motorized dampers
  • Hot gas bypass
  • Compressor attenuator cover
  • Special rigid, 4 seasons, outdoor units
  • Pressure gauge for suction and discharge indication


Class A

  • Controller including electronic thermostat with delay for compressor.
  • All electric motors are protected by thermal overload.
  • All steel parts are galvanized for corrosion protection.
  • Thermo-acoustic fiberglass isolation 1" thick for evaporator side.
  • Statically and dynamically balanced centrifugal blowers.
  • Overload protection for triple phased units.
  • Sealed and waterproof outdoor electrical system.
  • Low pressure protection.
  • High pressure protection.
  • Units are designed with access panels for ease of use.

Class B

  • Bi-directional expansion valve.
  • Sight glass (split units only).
  • Filter dryer.
  • Liquid separator for split type units.

*The data that appears in the website is the most up to date.


WS-G Catalog

Select a Series

Select Model

    Cooling Capacity Air Flow
Model Btu/h Kw CFM M³/h
14,500 4.25 450 765
18,500 5.4 600 1,020
24,100 7.1 800 1,360
30,500 8.9 1,000 1,700
36,600 10.7 1,200 2,040
44,300 13 1,400 2,380
52,000 15.2 1,600 2,720
65,000 19.1 2,000 3,400
75,000 22.1 2,500 4,250
86,000 25.2 2,800 4,760
98,500 28.9 3,200 5,440
127,500 37.4 4,000 6,800
144,000 42.2 5,000 8,500
188,000 55.3 6,000 10,200