FURNACE START-UP
Onstartupofthefurnace,youmayexperiencesomeodorsrelatingtofirsttimeoperationoftheheatingcompo
nents.Theremayalsobeanodorassociatedwithdustaccumulationinthesystemifthefurnaceisshutdownfor
anextendedperiodoftime.Uponrestart,allowingthefurnacetochargetoitsmaximumbrickcorechargelevel
willhelpexpeltheseodorsinatimelymanner.
Duringoperation,itisnormalforthefurnace,likeanyheatingsystem,toproduceexpansionnoises.Thesenoises
aretheresultoftheinternalcomponentsreactingtothetemperaturechangestheyareexposedto.
ROOM TEMPERATURE CONTROL
Roomtemperatureisadjustedatthewallthermostat.Withaheatcalltothethermostat,thecoreblowerinthe
furnaceisenergizedtocirculatehotbrickcoreairthroughthefurnace’sheatexchanger.Thecoreblower
automaticallyadjustsits'speed(loworhigh)inrelationtothebrickcoretemperature.Thebloweroperatesinlow
speedwithahotbrickcoreandinhighspeedwithlowerbrickcoretemperatures.
Afterthebrickcoreairwarmstheheatexchanger,thesupplyairblowerisenergized.Thesupplyairblower
circulatestheroomairthroughtheheatexchangertowarmit;and,then,deliversitbackintothelivingspace
throughtheductsystem.
Thedelaybetweenthecorebloweroperatingandthesupplyairblowerbeingenergizedensuresonlywarm,
comfortable,evenheatisbeingdeliveredintothelivingarea.Intermittentsupplyairbloweroperationmayoccur
withlowerbrickcoretemperaturesinanefforttomaintainaconstanttemperatureandevendistributionofheat
intothelivingarea.
Somethermostatsincorporatearoomtemperaturesetbackfeaturewhichallowsforroomtemperatureto
automaticallybesetbackaspecificnumberofdegreesatspecifiedtimes.Ifusingathermostatwiththisfeature
inaprogramwherethepowercompanyhas8ormoreconsecutivehoursofcontrol,itisimportanttobringthe
roomtemperaturebacktothedesiredoccupiedtemperatureaminimumofthree(3)hoursbeforetheoffpeak
(charge)periodends.Thiswillensureoptimumheatstorageformaintainingthedesiredroomtemperature
throughouttheonpeak(control)period.
BRICK TEMPERATURE CONTROL (CORE CHARGING)
Theamountofheatstoredinthebrickcoreofthefurnaceisregulatedautomaticallyinrelationtooutdoortem
peratureandtoitscontrolpanelsettings.Theoutdoortemperaturesensorthatshipswiththefurnaceasstandard
equipmentMUSTbemountedoutside.Itprovidestemperatureinformationtothefurnaceforproperbrickcore
charging.
Instandardconfigurationfromthefactory,theoutdoorsensorsignalsthefurnacetomaintainalevel1(1/3)brick
corechargeata55
o
Foutsidetemperature,alevel2(2/3)corechargeat35
o
F,andalevel3(maximum)core
chargeat15
o
F.Attemperaturesabove55
o
F,thefurnacewillnotmaintainacorecharge;however,ifthereisa
heatcallfromthethermostatduringoffpeaktimes,1/3oftheelementswillbeenergizedtoprovideheatforthe
durationoftheheatcall.(RefertoTable1,BrickCoreChargingSchedule,formoreinformationoncharging
levelsinrelationtooutdoortemperatureandthefurnacecontrolpanelsettings.)
If outdoor temperature charging set points other than the standard configuration are pre
ferred, the sensor must be specially ordered from the factory.
Operating the Furnace 7
2
3
1
NOTE
