Trane manual Standard CVGF Features, Environmental Features and Benefits, Optional Features

Features and Benefits

Standard CVGF Features

The following features are provided as standard with allTrane Model CVGF chillers:

•Hermetic two-stage centrifugal compressor-motor assembly with integral lubrication system and economizer cycle

•Evaporator and condenser assembly

•Prewired instrument and control panel

•Oil charge

•Integral oil heaters

•Isolation pads

•Wiring and oil system interconnection to main control panel

•Advance motor protection

•Two-stage gear drive with economized cycle for high efficiency and high reliability

•Liquid cooled hermetic induction motor; the motor operates at lower temperatures for longer motor life

Optional Features

•Unit and remote wye-delta mounted starters

•Unit mounted, floor mounted, and wall mounted solid state starters.

•Across-the-line, Primary Reactor, and AutoTransformer Remote mounted starter for medium/high voltage

•Marine waterboxes for evaporator and condenser

•Factory-applied thermal insulation

•One-inch deflection spring isolators for vibration-sensitive installations

•Refrigerant available from a local distributor

•Building automation systems (BAS) Interface

•Factory testing

Applications

•Comfort cooling

•Industrial process cooling

Patents

•Polygon drive for refrigeration compressor impellers

•Centrifugal compressor sump demister

•Internal oil filter

•Thermosiphonic oil cooler

•Compressor height and alignment adjustment

•Oil return using hot gas for motive force

•Centrifugal impeller assembly

•Internal oil filter

Orifice System

•Simplified orifice system with improved part load performance down to 20 percent part load

Advanced Heat Transfer Surfaces

•Evaporator and condenser tubes use the latest heat transfer surfaces

•Less refrigerant needed due to advanced patented evaporator design

Compact Size

•Designed with the retrofit and replacement market in mind

•The 400 to 500 NTON sizes can fit through most double-width doors

•Small footprint of the CVGF chiller saves valuable equipment room space

Simple Installation

•Simplified piping; the only water piping required is for the evaporator and condenser

•Simple power connection

•Unit mounted starter eliminates additional jobsite labor requirements

Environmental Features and Benefits

Improved Efficiency:

•High Efficiency: 0.55 kW/Ton at ARI conditions

•Motor cooling vented to economizer cycle, efficiency advantage

•HFC-134 optimized inlet guide vanes and impellers for improved cycle efficiency using computational fluid dynamics

Reduced Emissions:

•Over 30 percent joint reduction in compressor/motor assembly compared to previous designs

•Patented integral heaters imbedded into the compressor casting, no seals no leaks

•Beaded flat gasket technology instead of O-rings, lower susceptibility to developing leaks

•Minimal NPT pipe threads on chiller system, SAE O-ring boss fitting, lower leak potential

•Oil sump internal to compressor/ motor assembly with internal pump/ motor; eliminates vent and drain lines, leak prevention

•Patented internal oil filter prevents leaks and contamination from pipes; filter is isolated and easily replaced

•Advanced evaporator design minimizes the refrigerant charge; a reduced charge reduces the exposure to the environment in the event of a catastrophic charge loss

Additional Features and Benefits

•Patented polygon attachment instead of a keyed shaft, self-balancing

•Easy to replace motor terminals

•Motor/stator assembly is easily removed; speed assembly can be removed independent of the high- speed assembly

•Rolling element bearings

•Hydrodynamic bearings

•Advanced evaporator design: no eliminator necessary with an advanced suction baffle design

•All metric fasteners

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