Specifications

 c. Accessibleservicegageconnectionsonbothsuction
anddischargelinestocharge,evacuate,and
measurerefrigerantpressureduringanynecessary
servicingortroubleshooting,withoutlosingcharge.
 d. Theunitshallhavetwoindependentrefrigerant
circuits,equallysplitin50%capacityincrements.
UnitControls:
 a. Unitshallbecompletewithself-containedlow-voltage
controlcircuitprotectedbyaresettablecircuitbreaker
onthe24-volttransformerside.
 b. Unitshallincorporatealockoutcircuitwhichprovides
resetcapabilityatthespacethermostatorbaseunit
shouldanyofthefollowingstandardsafetydevices
tripandshutoffcompressor:
 • Loss-of-charge/Low-pressureswitch.
 • High-pressureswitch.
 • Freeze-protectionthermostat,evaporatorcoil.If
anyoftheabovesafetydevicestrip,anLED
(light-emittingdiode)indicatorshallflasha
diagnosticcodethatindicateswhichsafety
switchhastripped.
 c. Unitshallincorporate“AUTORESET”compressor
overtemperature,overcurrentprotection.
 d. Unitshalloperatewithconventionalthermostat
designsandhavealowvoltageterminalstripfor
easyhook-up.
 e. Unitcontrolboardshallhaveon-boarddiagnostics
andfaultcodedisplay.
 f. Standardcontrolsshallincludeanti-shortcycleand
lowvoltageprotection,andpermitcoolingoperation
downto0ºF.
 g. Controlboardshallmonitoreachrefrigerantsafety
switchindependently.
 h. Controlboardshallretainlast5faultcodesinnon-
volatilememory,whichwillnotbelostintheeventof
apowerloss.
GAS HEATING SECTION
Heatexchangerandexhaustsystemshallbe
constructedofaluminizedsteelandshallbedesigned
withinduceddraftcombustionwithpostpurgelogic,
energysavingdirectsparkignition,andredundantmain
gasvalve.Theheatexchangershallbeofthetubular
type,constructedofT1-40aluminizedsteelforcorrosion
resistanceandallowingminimummixedairentering
temperatureof40ºF.Burnersshallbeofthein-shot
type,constructedofaluminum-coatedsteel.Allgas
pipingshallentertheunitcabinetatasinglelocation,
througheitherthesideorbottom,withoutanyfield
modifications.Anintegratedcontrolboardshallprovide
timedcontrolofevaporatorfanfunctioningandburner
ignition.Heatingsectionshallbeprovidedwiththe
followingminimumprotection:
 a. Primaryandauxiliaryhigh-temperaturelimitswitches.
 b. Induceddraftpressuresensor.
 c. Flameprovingcontrols.
 d. Alltwostagegasunitsshallhavetwoindependent
stagesofcapacity(70%or75%1ststage,100%2nd
stage)3through5tonand(60%1ststage,100%2nd
stage)6-1/2through12-1/2ton.
UNIT OPERATING CHARACTERISTICS
Unitshallbecapableofstartingandrunningat125ºF
outdoortemperature,exceedingmaximumloadcriteria
ofAHRIStandard340/360.Thecompressor,with
standardcontrols,shallbecapableofoperationdownto
0ºFoutdoortemperature.Unitshallbeprovidedwithfan
timedelaytopreventcoldairdeliverybeforeheat
exchangerwarmsup.(Gasheatonly)
ELECTRICAL REQUIREMENTS-Allunitpowerwiring
shallenterunitcabinetatasinglefactoryprovided
locationandbecapableofsideorbottomentryto
minimizeroofpenetrationsandavoidunitfield
modifications.Separatesideandbottomopeningsshall
beprovidedforthecontrolwiring.
STANDARD LIMITED WARRANTIES-Compressor–5
Years,HeatExchanger–10Years,StainlessSteelHeat
Exchanger–15Years,Elect.HeatElem.–5Years,
Parts–1Year.
FACTORY INSTALLED OPTIONAL OUTDOOR AIR
(Shallbemadeavailablebyeither/or):
ADDITIONAL FACTORY INSTALLED OPTIONS
• BAS Controls–Includesupplyairsensor,returnair
sensor,dirtyfilterindicatorandairprovingswitch.
FIELD INSTALLED OPTIONS
UnitarySalesToolv1.5.8.0 Informationissubjecttochangewithoutnotice.Checklocalcodes. Printed10/20/2014

Guide Specification for
Luxaire Ovation
Page:7
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