Trane 4TWB4 Heat Pump User Manual


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6 22-1834-09
General
Data
AHRI Standard Capacity Rating Conditions
AHRI STANDARD 210/240 RATING CONDITIONS —
(A)Cooling80°FDB,67°FWBairenteringindoorcoil,
95°FDBairenteringoutdoorcoil.
AHRI STANDARD 270 RATING CONDITIONS —(Noise
ratingnumbersaredeterminedwiththeunitincoolingopera-
tion.)StandardNoiseRatingnumberisat95°Foutdoorair.
Accessory Description and Usage
Anti-Short Cycle Timer—Solidstatetimingdevicethat
preventscompressorrecyclinguntil5minuteshaveelapsed
aftersatisfyingcallorpowerinterruptions.Useinareawith
questionablepowerdelivery,commercialapplications,long
lineset,etc.
Evaporator Defrost Control—SPSTTemperatureactuated
switchthatcyclesthecondenseroffasindoorcoilreaches
freeze-upconditions.Usedforlowambientcoolingto30°F
withTXV.
Rubber Isolators —5largerubberdonutstoisolatecon-
densingunitfromtransmittingenergyintomountingframeor
pad.Useonanyapplicationwheresoundtransmissionneeds
tobeminimized.
Hard Start kit —Startcapacitorandrelaytoassistcompres-
sormotorstartup.Useinareaswithmarginalpowersupply,
onlonglinesets,lowambientconditions,etc.
Extreme Condition Mount Kit —Bracketkitstosecurely
mountcondensingunittoaframeorpadwithoutremoving
anypanels.Useinareaswithhighwinds,oroncommercial
rooftops,etc.
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