YN

The YN range of chillers are designed for water or water/glycol cooling. The twin screw compressor is open drive and close coupled to the motor. Heat exchangers are the flooded type with refrigerant passing through the cooler and condenser shells and water in the tubes. Capacity selection is computerised so that chiller components can be customed matched to meet individual building load energy requirements. A Cooling Tower or Dry Cooler is required for heat rejection. All units are designed for plant room installation. 

Features

High Efficiency Screw Compressor: 
The open drive twin rotary screw compressor has been engineered and constructed to meet the exact requirements of the industrial refrigeration market. It utilises state-of-the-art technology to provide the most reliable compressor, with high energy efficiency at all operating conditions.

Heat Exchangers: 
Shells - The flooded type evaporator and condenser shells are fabricated from rolled carbon steel plates with fusion welded seams. Carbon steel tube sheets, drilled and reamed to accommodate the tubes, are welded to the end of each shell. Intermediate tube supports are fabricated from 12 mm carbon steel plates. 
Tubes - The copper alloy heat exchanger tubes are externally and internally enhanced to provide optimum performance.

Smooth and accurate capacity control: 
Capacity control is achieved by use of a slide valve which provides fully modulating control from 100% to 10% of full load, depending upon the unit selection. The slide valve is actuated by oil pressure controlled by external solenoid valves via the OptiView control centre. Equipped with the optional Solid State Starter, the YN screw chiller starts €œsoftly,€ putting less stress on the motor and compressor, extending their life. In addition, the Solid State Starter includes an impressive array of safety controls that protect the chiller against: phase loss, phase reversal, phase imbalance, under-voltage, overvoltage, and over-current.