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:_.
.—
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Temperaturelimitingcanreduceenergycosts
bylimitingthe lowesttemperaturethat canbe
obtainedoncoolingandthe highesttemperature
thatcanbeobtainedon heating.Temperature
limitingiscontrolledbysettingthefirstsixsmall
verticalslideswitchesina stripofninethatare
mountedon the auxiliarycontrolcircuitboard.
Thefirstthreeare usedto selectcoolingrange
limitsandthe nextThreeareusedto selectheating
rangelimits.
FanSwitch
COOLINGLIMITS
LIMIT SW!TCH
TEMP RANGE
UP
F
NONE 64t085
1 66t085
l&2 68t085
2 70t085
2&3
71 to85
l&2&3
73t085
l&3 75 to 85
3
77t085
HEATINGLIMITS
LIMIT SWITCH TEMP RANGE
UP
F
NONE — 60t085
4 60
to 80
4&5 60 to 76
5 60 to 74
58L6
60t073
4&5&6
60t071
4&6 60t069
6 60t067
[ The unithasa Diagnosisfeature.When the number
~ 8 switch ismoved to UP,[he unitwill goIhrough an
~ operations checl( of all components. This cheek is
? completed in approximately one minute.
:~
:1
FANSWITCH
Thisswitchissetat DOWNatthefactoryto
providecontinuousfanoperationincoolorheat
modes.LeavingtheswitchintheDOWNsetting
allowscontinuouscirculationofroomairandwill
resultina moreuniformtemperaturethroughout
theroom.Settingtheswitchat UPwill causethe
fanto cycleonandoffwith thecompressoror
resistanceheater.
FREEZESENTINEL
The unitisequippedwith a sensorthat
automaticallyturnsonthe resistanceheaterand
fan ifthe roomtemperature,assensedat the unit,
dropsto approximately45” F.andwill turnthe
heateroffwhen the temperaturereachesabout
50”F.The FreezeSentinelsystemhelpsprevent
damage dueto sub-freezingtemperaturesandwill
operateregardlessofthe mode settingofthe unit.
FreezeSentinelisactiveAS LONGAS POWERTO
THE UNIT HAS NOTBEENINTERRUPTED.
VENT%LATIONCONTROL
The VENTILATION controlleverislocatedat
the lower left sideofthe unit,behindthe
room cabinet.
This levercontrolsthe
vent doorand isset inthe
CLOSEpositionat the
factory sooutdoor airwill
not enter the rootnthrough
the vent and only indoor
air iscirculated bythe
air conditioner.
Movingthe leverto OPEN
opensthevent doorand
drawsoutdoorairthrough
the airconditionerandinto
the room.Leavingthevent
doorOPENduringextreme
temperatureconditionsreducesheatingorcooling
effectivenessandincreasesoperatingcosts.
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(--’-’”
.1
\
_,. .. .
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