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Supersedes
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Trane has a policy of continuous product and product data improvement and it reserves the right to change
design and specifications without notice.
Trane
www.trane.com
Mechanical
Specification Options
General
The 2TWB3 is designed to operate at
outdoor ambient temperatures as high
as 115°F. Cooling capacities are
matched with a wide selection of air
handlers and furnace coils that are AHRI
certified. The unit is certified to UL 1995.
Exterior is designed for outdoor applica-
tion.
Casing
Unit casing is constructed of heavy
gauge, G90 galvanized steel and painted
with a weather-resistant powder paint on
all louvers, panels, prepaint on all other
panels. Corrosion and weatherproof
CMBP-G30 DuraTuff™ base.
Refrigerant Controls
Refrigeration system controls include
condenser fan, compressor contactor
and low pressure switch. High and low
pressure controls are inherent to the
compressor. A factory installed liquid line
drier is standard.
Compressor
The Climatuff
®
compressor features
internal over temperature and pressure
protection and total dipped hermetic
motor. Other features include: roto lock
suction and discharge refrigerant
connections, centrifugal oil pump and
low vibration and noise.
Condenser Coil
The outdoor coil provides low airflow
resistance and efficient heat transfer.
The coil is protected on all four sides
by louvered panels.
Low Ambient Cooling
As manufactured, this unit has a cooling
capability to 55°F. The addition of an
evaporator defrost control permits
operation to 40° F. The addition of an
evaporator defrost control with TXV
permits low ambient cooling to 30° F.
Accessories
Thermostats — Cooling only and heat/
cooling (manual and automatic
changeover). Sub-base to match thermo-
stat and locking thermostat cover.
Evaporator Defrost Control — See Low
Ambient Cooling.
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