214 OMEGA AIR: Compressed Air and Gas Treatment OWT SERIESAIR-COOLED WATER CHILLERS WITH ROTARY AND SCROLL COMPRESSORS 7 to 128 kw cooling capacity rto2” water connections diameter R410A refrigerant DESCRIPTION The OWT water chiller range is intended for the air conditioning and industrial processes cooling sector. The range is designed for outdoor installation and specifically designed to meet the industry application requirements, to provide accurate control of the chilled water temperature with continuous operation and absolute reliability. The range is air cooled with axial fans. It is composed of IE basic models, covering cooling capacities from 7 to 128 kW. All units are equipped with: • hermetic rotary or scroll compressors; • R410A ecological refrigerant gas; • plate evaporator; • aluminium micro channel finned coils; • fans with continuous speed control; • microprocessor controller; • ventilated electrical panel; • integrated storage tank; • hydraulic pump; • stainless steel condensers filters; • filter and shut-off valves for water; APPLICATIONS • Air conditioning and industrial processes cooling sector. REFRIGERANT CIRCUIT This is manufactured from top quality materials by skilled personnel according to strict procedures of brazing, compliant with Directive 97/23. It is composed of: • rotary (OWT007 and OWTOIO models) and scroll compressors designed for use with R410A; • evaporator assembled from AI51316 stainless steel brazed plate, • condenser assembled from micro channel aluminium; • filter dryer; • flow sight glass with moisture indicator • external equalisation thermostatic expansion valve. The thermostatic expansion valve regulates the injection of liquid refrigerant into the evaporator. The injection is a response to the refrigerant overheating. The range of thermostatic valves that we use are designed for specific applications and are connected to the circuit via bi-metal brazing; • unidirectional valves (only for multi-compressor units); • high pressure switch with manual reset and low pressure switch with automatic reset; • high and low pressure manometers; • pressure connections for checks and maintenance. HYDRAULIC CIRCUIT This consists of an evaporator and interior piping to the machine, it also includes: • an storage tank made of carbon steel and thermally insulated; • an electric stainless steel, thermally insulated pump; • a water bypass to prevent incidents • caused by the erroneous closure of the stop valves; • expansion vessel; • safety valve; • automatic vent valve; • water-level sensor • water differential pressure switch; • stop ball valves; • inlet unit water filter; • manometer;

Compressors power inputl,: Total absorbed current (1) (2) Maximum power input (total)0 Maximum absorbed current (total)11 P3 Pump power input P3 Pump absorbed current Power supply Compressor type Evaporator type Condenser type Brazed plates Sound pressure level (4) Water connections diameter Tank capacity - Option Expansion vessel capacity P5 Input pump power- Option P5 Absorbed pump current - Option Data referred to following conditions: water temperature in/out: 20/15‘C - ambient air temperature: 25°C - (2) Data referred to unit with standard P3 pump - (3) Data related to most heavy condition...