Harman P35I - C. General Operating Information

24
P35i Fireplace Insert
Pellets or Corn/Pellet Mixture Only
Save These Instructions
3-90-775R15_04/13
C. General Operating Information
TheP35i'sESPcontrolwillmaintainanoutputleveltotyourtemperaturedemands.Therearetwomodesof
operation;"StoveTemp"mode,wherethecontrolwillmaintainaspeciedconstanttemperature,regardlessof
thesurroundingenvironmenttemperatureconditions,Or"RoomTemp"mode,wherethecontrolwilladjustthe
rateofburn tomeetaspeciedroomtemperaturesetting.Youalso havethechoiceofAutomaticor Manual
ignition.Regardless ofthemode selected,operationiscontrolledbyboth,
exhausttemperature-beingreportedbytheESP(ExhaustSensingProbe),
andthemicroprocessorcircuitboard.
We'lldiscussthesecontroldevicesandtheirfunctionsnow.
1. ESP (Exhaust Sensing Probe)
The ESP is a tiny thermistor located in the exhaust stream. The probe
changes it's thermalresistancebased on minute changes in temperature,
whichismonitoredbythecircuitboardandusedtodeterminetheneedfor
changesintheburnratetomeetthetemperaturedemand.
2. Circuit Board
Asstatedpreviously,thecircuitboardisamicroprocessor,whichmeansithas
theabilityto"think"andadjustitselfbasedonboth,reportedtemperatures
anddemandtemperature.Thecircuitboardwillalsoashacodesequence
ontheStatuslightifanerrorisdetected.
ESP Location

Sets the maximum feed rate.

Runs all motors at full speed for one
minute to check operation. Afterwards
the combustion blower will remain on
low burn voltage.

Allows you to adjust the room temperature in
Room Temp Mode using the outer scale marked
in degrees Fahrenheit. It also allows you to adjust
the stove temperature while in Stove Temp Mode
using the inner scale marked from 1 to 7.

Allows you to choose between Room
Temp Mode, Stove Temp Mode, or
OFF. Also allows you to vary the
distribution blower speed by turning
the knob to the high or low side of
each mode.
Distribution Blower speed adjustment
range. L = low
H = high
Variable speed anywhere between L
and H; although as the stove temp.
goes up , so does the low end of the
scale.

Indicates power to the control.
Indicates power to the feed motor.
Indicates power to combustion blower.

Will be lit in either stove or room temp
mode when pointer is not within off
position band except after normal shut
down. Blinks to indicate errors detected.
Indicates power to distribution blower.

For dealer maintenance
only. Requires special DDM
monitor supplied to Harman®
Dealers exclusively.
Low Draft Adjustment Screw (see
page 26)
Indicates power to the igniter.

Set to appropriate Start-Up mode.