04 / HEAT REJECTIONCondenser-Water and Cooling-Tower Requirements
The condenser-water circuit carries both the evaporator load and compressor heat to the heat-rejection equipment. The cooling tower or alternative heat sink must therefore be selected for total heat rejection, not only nominal chiller capacity. Required inputs include design wet-bulb temperature, tower approach and range, condenser-water flow, water quality and the approved minimum and maximum condenser-water temperatures.
Water treatment, filtration, bleed control and tube or passage cleaning are part of reliable operation. Actual requirements depend on local water chemistry, materials and the selected heat exchanger. Pump head must cover piping, valves, condenser pressure drop and the heat-rejection equipment at design flow.
05 / PROCESS FLUIDSProcess Fluids, Glycol and Low-Temperature Duty
Water is common for above-freezing duty. Propylene glycol, ethylene glycol or another approved secondary fluid may be required for freeze protection or low-temperature process service. The exact fluid and concentration must be declared because they change specific heat, density, viscosity, heat-transfer performance and pump pressure drop.
Low leaving-fluid temperature does not define a standard chiller by itself. Selection must also include return temperature, flow, glycol concentration, ambient or condenser-water condition, pull-down requirement and operating profile. GESON confirms the achievable temperature range and capacity for the selected model in writing.
06 / REFRIGERANT SCOPERefrigerant and Project Scope
GESON can supply new chillers using R454B or R513A where the selected equipment, destination requirements and written project scope permit. Refrigerant choice affects safety classification, components, controls, installation and service procedures. It is confirmed for the exact model rather than promised as a universal option.
GESON can also provide parts or refrigerant-related service for legacy GESON R22 equipment. This does not mean that R22 is specified for new equipment or that a refrigerant conversion is automatically approved. The original unit, local rules, component compatibility and service scope must be reviewed first.
07 / CONTROLS & RELIABILITYConstruction, Controls and Reliability Review
The written submittal should identify compressor configuration, evaporator and condenser type, wetted materials, refrigerant circuits, controls, electrical supply, design pressure, protection devices and connection requirements. Materials are selected from fluid chemistry, water quality, corrosion risk, pressure and temperature; they should not be assumed from a generic product page.
For critical processes, review staged capacity, independent circuits, standby pumps, alarms, remote communications and the consequence of a shutdown. Applicable GESON units have 40,000-hour trouble-free operating capability within the approved application, installation, operation and maintenance conditions. Model-specific scope must be confirmed in writing.
