Harman Accentra - Motor And Component Location

Harman® • Accentra Owner’s Manual_R40 • 2002 -___ • 11/1522 3-90-08326c
The Low Draft Pressure Switchisadifferentialpressureswitch
that monitors the negative pressure (Draft) in the rebox. If the
draftbecomestoo low forpropercombustion,theswitch opens,
cuttingpowertothefeedmotorandtheignitercircuits.Thisswitch
isconnectedintotheAC(highvoltage)wiring.
The Control Board/ESP combination is responsible for all high
limitsafetycontrol.Thereare2highlimits,onenormaloperation
highlimitandonebackuphighlimit.Thecontrolhasanautomatic
diagnosticcircuitthatcontinuouslymonitorstheESPand Room
Sensorforfaults.Ifafaultshouldoccur,thecontrolsendsastatus
alertandatthesametimetheunitgoesdowntominimumfeed/
minimumburnasasafetycondition.
B. Motor and Component Location
Accentra Pellet Stove Safety Devices
ESP
Low Draft Pressure
Switch
Air Intake Flapper
Feed Motor
Combustion Blower
Distribution Blower 3" Flue Pipe Connector