Trane 4TWB4 Heat Pump User Manual


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Trane
www.trane.com
02/12
Trane has a policy of continuous product and product data improvement and it reserves the right to change
design and specifications without notice.
Mechanical
Specification Options
General
The4TWB4isfullychargedfromthe
factoryforupto15feetofpiping.This
unit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certied.The
unitiscertiedtoUL1995.Exterioris
designedforoutdoorapplication.
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weather-
proofCMBP-G30DuraTuff™base.
Refrigerant Controls
Refrigerationsystemcontrolsinclude
condenserfanandcompressorcontac-
tor.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:centrifugal
oilpumpandlowvibrationandnoise.
Condenser Coil
Theoutdoorcoilprovideslowairow
resistanceandefcientheattransfer.
Thecoilisprotectedonallfoursidesby
louveredpanels.
Low Ambient Cooling
Asmanufactured,thisunithasacool-
ingcapabilityto55°F.Theadditionof
anevaporatordefrostcontrolwithTXV
permitslowambientcoolingto20°F.
Accessories
Thermostats—Coolingonlyandheat/
cooling(manualandautomaticchange-
over).Sub-basetomatchthermostat
andlockingthermostatcover.
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