Trane CVGF - Manual (Page 4)

CTV-PRC001-GB 4
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
Standard CVGF Features
The following features are provided as
standard with all Trane 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
Auto Transformer 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
Features and
Benefits