INSTRUMENTSANDCONTROLS99
Recirculation
Pressrecirculationtocirculatetheairinthecab.Onlyasmallamountofairistaken
directlyfromoutside.
Thelightinthebuttoncomesonwhenthebuttonispressedforairrecirculation.
TemperatureControlSettingsECC
MaximumColdSetting
Thetemperatureknobshouldbesettothefarleft.Thefanspeedknobshouldbesetto
AUTOandtheairdistributionknobshouldbeonAUTO.
MaximumHeatSetting
Thetemperatureknobshouldbesettothefarright.Thefanspeedknobshouldbeset
toAUTOandtheairdistributionknobshouldbeonAUTO.
NormalSetting
Whenthetemperaturecontrolissettoanytemperaturebetween18°Cand27°C(64°F
and80°F),theECCautomaticallyadjustsitselfclosetotheselectedtemperature,
similartoathermostat
FanSpeed
Thefanspeedsare1through4.Thefanwillnotoperatewhen"0"isselected,butair
willowwhensettofreshairmodeduetoramaireffectwhenthetruckismoving.
•TheECCautomaticallycirculatesairatfanspeed4whenthereisabigdifference
betweentheselectedtemperatureandthetemperaturemeasuredbythein-cab
sensor.However,asthetemperatureinthecabgetsclosertotheselected
temperature,thefanspeedbeginstoslowdown.
•Ifmaximumcoldormaximumheatareselected,theECCautomaticallycirculates
airatfanspeed4whenAUTisselected.Atanyotherselectedfanspeedthesystem
adjustsandconformstothechosenspeed.
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