Harman Stove Company Stove P43 User Manual

installation & Operating Manual

P43 Pellet Stove Owners Manual

“Ce manuel est disponible en Français sur demande”

SaFetY nOtice

PleaSe read thiS entire Manual beFOre YOu inStall and uSe YOur new rOOM heater. Failure

tO FOllOw inStructiOnS MaY reSult in PrOPertY daMage, bOdilY injurY, Or even death.

FOr uSe in the u.S. and canada. Suitable FOr inStallatiOn in MObile hOMeS.

iF thiS harMan StOve iS nOt PrOPerlY inStalled, a hOuSe Fire MaY reSult. FOr YOur SaFetY, FOl-

lOw inStallatiOn directiOnS.

cOntact lOcal building Or Fire OFFicialS abOut reStrictiOnS and inStallatiOn inSPectiOn

reQuireMentS in YOur area.

cOntact YOur lOcal authOritY (Such aS MuniciPal building dePartMent, Fire dePartMent, Fire

PreventiOn bureau, etc.) tO deterMine the need FOr a PerMit.

cette guide d'utiliSatiOn eSt diSPOnible en FrancaiS. chez vOtre cOnceSSiOnnaire de harMan

StOve cOMPanY.

Save theSe inStructiOnS.

Manual item# 3-90-04301

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introduction

The P43 Pellet Stove has huge features in a small package, giving you 0 to 43,000 BTU when you need

it, automatically. You basically need to set your desired room temperature and ﬁll the hopper. With the P43

you will notice even heat throughout your zone and a level of convenience you never thought possible.

The P43 epitomizes the capability of Harman Pellet Stoves, taking advantage of Harman’s ꢀ0+ years

of pellet stove design, technology and manufacturing. This 43,000 BTU stove has the smartest controls

coupled with minimal maintenance. The P43's output is managed by a microprocessor that senses the room

temperature and the ﬁre temperature with tiny thermistor probes and then determines the best feed rate for

your heating demand. This improved and smarter control also has a diagnostic port which allows a service

representative to attach an external display showing live working data for ease in troubleshooting.

The platinum combination is Harman’s Patented Feeder & Burn Pot, and ESP Control which have been

developed to their highest state. These features work together to allow amazing heat output with little

regard for fuel quality.

table of contents

Safety Information

Installation

Venting

ESP Control

ꢀ0

ꢀ1

ꢀꢀ

ꢀ6

ꢀ7

ꢀ9

3ꢀ

Serial #:

Automatic Operation

Manual Operation

Low Draft Voltage Adjustment

Room Sensor

Maintenance

This label is located on the back of the unit.

Please copy the Serial Number for future reference.

Manufactured By / Fabrique Par:

LISTED PELLET FUEL BURNING ROOM HEATER APPAREIL DE CHAUFFAGE CATALOGUÉ DE

MODÈLE POUR BRÛLER DES BOULETTES COMBUSTIBLES.

MODEL / MODÈLE: "PP 38+" / "P43"

DO NOT REMOVE THIS LABEL.

NE PAS ENLEVER CETTE ÉTIQUETTE.

352 MOUNTAIN HOUSE ROAD

HALIFAX, PA 17032

W/N 02531

TESTED TO : UL 1482 ASTM E1509

OREGON 814-23-900

ULC-S627

WHI -

INSTALL WITH MINIMUM CLEARANCES TO WALLS AS

SHOWN

INSTALLER AVEC LES DISTANCES MINIMUM

DE SECURITÉ COMME INDIqUÉ.

BAR CODE LABEL

AVEC LES

PROTECTEURS

DE CÔTÉ

SANS LES

PROTECTEURS

DE CÔTÉ

ESPACES LIBRES MINIMUM

DES MATÉRIAUX COMBUSTIBLES:

DU MÛR DE CÔTÉ AU POÊLE

SIDEWALL-BACkWALL

INSTALLATION WITH

SIDE SHIELDS

SIDEWALL-BACkWALL

INSTALLATION WITHOUT

SIDE SHIELDS

WH-PN 025

TEST DATE: JUNE 1997

MINIMUM CLEARANCES

TO COMBUSTIBLES:

SIDEWALL TO STOVE

BACKWALL TO STOVE

CEILING TO STOVE TOP

STOVE CORNER TO DIAGONAL WALL

PREVENT HOUSE FIRES, OPERATE WITH VIEWING & ASH DOOR CLOSED.

UNIT MUST BE PLACED ONANON-COMBUSTIBLE FLOOR PROTECTOR EXTENDING

6" TO THE FRONT, 6" TO SIDES AND 1" TO REAR. MEASURE FRONT FROM GLASS.

EXHAUSTTYPE:LISTEDTYPELORPLVENTINSTALLEDTOVENTMANUFACTURER'S

INSTRUCTIONS AND LOCAL BUILDING CODES.

ELECTRICAL RATING: 6 AMPS, 120 VOLTS, 60 HERTZ

FUEL: PELLETIZED OR BIOMASS

INSTALL AND USE ONLY IN ACCORDANCE WITH MANUFACTURER'S INSTALLATION

AND OPERATING INSTRUCTIONS. CONTACT LOCAL BUILDING OR FIRE OFFICIALS

ABOUT RESTRICTIONS & INSTALLATION INSPECTION IN YOUR AREA.

EPA EXEMPT PER 40 CFR 60.534, METHOD 28A.

406 mm

51 mm

254 mm

51 mm

457 mm

229 mm

2"/51mm

2"/ 51mm

WITHOUT

SIDE SHIELDS

WITH

SIDE SHIELDS

DU MÛR ARRIÈRE AU POÊLE

DU PLAFOND AU DESSUS DU POÊLE

DU COIN DU POÊLE AU MÛR DIAGONAL

457 mm

229 mm

16"

18"

10"

18"

16"

406mm

PRÉVENIR LES FEUX DE MAISONS. OPÉRER SEULEMENT AVEC LA PORTE

D'OUVERTURE ET LA PORTE DES CENTRES FERMÉES. L'APPAREIL DOIT ÊTRE

PLACÉSURUNPLANCHERPROTECTEURINCOMBUSTIBLE,CELUI-CIS'ÉTENDANT

DE 152 mm EN AVANT, DE 152 mm DES CÔTÉS ET D 25 mm DE L'ARRIÈRE.

10"

254mm

DISTANCES AUX MURS

LATÉRAL ET ARRIÈRE AVEC

PROTECTIONS MURALES

DISTANCES AUX MURS

LATÉRAL ET ARRIÈRE SANS

PROTECTIONS MURALES

SORTE D'ÉCHAPPEMENT: VENTILATEUR DE TYPE

OU PL INSTALLÉ SELON

LES INSTRUCTIONS DU FABRICANT ET SELON LES CODES LOCAUX DE LA

CONSTRUCTION.

FLOOR PROTECTOR

MINIMUM SIzE

1"/25mm

CORNER INSTALLATION 9" WITH

OR WITHOUT SIDE SHIELDS

PUISSANCE ÉLECTRIqUE: 6 AMPS, 120 VOLTES, 60 HERTZ

COMBUSTIBLE: DE BOULETTES COMBUSTIBLES OU BIOMASSES.

INSTALLER ET UTILISER SELON LES INSTRUCTIONS D'INSTALLATION ET

D'OPÉRATIONDEFABRICANT.CONTACTERLEBUREAUDELACONSTRUCTIONOU

LE BUREAU DES POMPIERSAU SUJET DES RESTRICTIONS ET DES INSPECTIONS

D'INSTALLATION DANS VOTRE VOISINAGE.

EXEMPTION EPA PAR 40 CFR 60.534, DE MÉTHODE 28a

APPROUVÉ POUR L'USAGE DANS LES MAISONS MOBILES

PUISSANCE ESTIMÉE: .75 À 5.5 LBS PAR HEURE.

9" / 229mm

Trouble Shooting

Feeder Parts

152mm

APPROVED FOR USE IN MOBILE HOMES.

INPUT RATING: .75 TO 5.5 LBS PER HOUR.

152mm

TAILLE MINIMALE

DE LA PROTECTION DE SOL.

INSTALLATION EN ANGLE 229mm

AVEC OU SANS PROTECTIONS

MURALES

DO NOT CONNECT THIS UNIT TO A CHIMNEY SERVING ANOTHER APPLIANCE.

NE PAS CONNECTER CET APPAREIL À UNE CHEMINÉE SERVANT UN AUTRE

APPAREIL.

MADE IN USA

P.N. 3-90-04300

Speciﬁcations

Options

Please read this entire manual before you install

and use your new room heater. Failure to fol-

low instructions may result in property damage,

bodily injury, or even death.

Wiring Diagram

Parts List

Warranty

35ꢀ Mountain House Road

Halifax, PA 1703ꢀ

P43 Pellet Stove

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iMPOrtant nOteS

warning

dO nOt inStall a Flue daMPer in the

eXhauSt venting SYSteM OF thiS

unit.

MObile/ManuFactured hOMe

S ta n d a r d S d O n O t a l l O w

inStallatiOn in rOOMS deSignated

FOr SleePing.

dO nOt cOnnect thiS unit tO a

chiMneY Flue Serving anOther

aPPliance.

cautiOn

the Structural integritY OF the

MObile hOMe FlOOr, wall, and

ceiling/rOOF MuSt be Maintained.

SPecial nOte:

due tO FlY aSh builduP, it iS StrOnglY

recOMMended that YOu have YOur

StOve PrOFeSSiOnallY cleaned and

Serviced annuallY. thiS includeS all

PartS OF the StOve, and the entire

venting SYSteM.

MObile hOMe inStallatiOn ShOuld

be dOne in accOrdance with the

ManuFactured hOMe and SaFetY

Standard (hud), cFr 3280, Part 24.

cautiOn

KeeP cOMbuStible MaterialS (Such

aS graSS, leaveS, etc.) at leaSt 3

Feet awaY FrOM the Flue Outlet

On the OutSide OF the building.

cautiOn

alwaYS be Sure there iS nO

unburned Fuel in the aSh Pan

PriOr tO lighting a Fire. thiS will

cauSe SMOKe and SOOt and Other

unwanted reSultS.

inStallatiOn and rePair OF thiS

harMan StOve ShOuld be dOne bY a

QualiFied Service PerSOn. we recOM-

Mend that the StOve be inSPected

beFOre uSe andat leaSt annuallY bY

a QualiFied Service PerSOn. PeriOdic

cleaning iS reQuired thrOughOut

the heating SeaSOnandat the end OF

each winter FOr the StOve tO wOrK

eFFicientlY. See cleaning inStruc-

tiOnS On Page 22.

P43 Pellet Stove

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assembly and installation

unpacking

The P43 is bolted (1/4 x 1" hex head bolts) to the

skid to prevent movement during shipping.

To free the stove from the skid you must remove

the hold-down bolts in the rear of the pedestal

base.

removing rear cover panels

The rear cover panels are secured to the stove

with three bolts each. Two ot the bolts need

only be loosened, not removed, to remove the

panels. It is recommended that the rear covers

are installed after the unit is in place and the vent

pipe is installed, to prevent contact with hot or

moving parts.

Firebrick

Install the firebrick horizontally on the angle

bracket above the burnpot.

Flame guide

Install the cast iron ﬂame guide on top of the

burn pot. Make sure that the ﬂame guide is fully

seated on the vertical sides of the burn pot and

that the back of the guide rests against the body

of the stove.

Shipping Bolts

Note: These same holes

are used for securing the

stove in mobile home

installation.

Fig. 1

INSTALL EXHAUST VENT AT CLEARANCES

SPECIFIED BY THE MANUFACTURER. Most

pellet vent pipe requires a minimum of 3" of

clearance to combustible materials allthough

some can be installed at 1" clearance.

Rear Cover

Panels

P43 Pellet Stove

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installation

installing

Place the stove on a noncombustible ﬂoor protector

that extends a minimum of 6 inches to the front, (mea-

sured from the glass) 6 inches to the sides and 1 inch

to the rear of the hopper. In some places, it is required

that ﬂoor protection be installed under any horizontal

venting.The minimum ﬂoor protector material is 20

gauge sheet metal. Other ﬂoor protector materials are

ceramic tile, stone, brick, etc.

Place the stove away from combustible walls at

least as far as shown in Figures 3,4 and 5. Note the

difference in side wall clearance with and without side

shields.

9" With or Without Side Shields

Note that the clearances shown are minimum for

safety but do not leave much room for access when

cleaning or servicing.

Fig. 3

Connect the power cord to a 1ꢀ0 V.A.C. 60Hz

grounded receptacle. (A surge protector is recom-

mended to protect the circuit board.) If the voltage

entering your home is below 116 volts your stove may

not work properly. Also be sure that the polarity of the

outlet that the stove is plugged into is correct.

Prior to installing the ﬂue pipe, connect a draft meter.

(The draft meter must have a minimum range of 0-

.5.)Record the ﬁrst reading. Connect ﬂue pipe to stove

and be sure all doors and windows in the home are

closed. Record the second draft reading_______. If

the second reading is more than .05" lower than the

ﬁrst reading, check for possible restrictions or the need

for outside air (see page 9). For more information on

the draft test procedure, refer to Page ꢀ0.

Mobile home installation

10"

Fig. 4

When installing this unit in a mobile home, several

requirements must be followed:

1. The unit must be bolted to the ﬂoor. This can be

done with 1/4" lag screws through the ꢀ holes in the

base plate.

16"

ꢀ. The unit must also be connected to outside air.

See page 9.

3. Floor protection and clearances must be followed

as shown.

4. Unit must be grounded to the metal frame of the

mobile home.

cautiOn: this appliance must be vented to the

outside.

Due to high temperatures, the stove should be placed

out of trafﬁc and away from furniture and draperies.

Children and adults should be alerted to the hazards

of high surface temperatures and should stay away to

avoid burns to skin and/or clothing.

Fig. 5

Floor Protection must be 2 inches to each side, 6

inches to the front, and 1 inch to the back of the

stove. Floor Protector minimum: 32½" wide x 33"

deep.

3ꢀ½" minimum

Young children should be carefully supervised when

they are in the same room as the stove.

Clothing and other ﬂammable materials should not

be placed on or near this unit.

warning

Mobile/Manufactured home Standards

do not allow installation in rooms

designated For Sleeping.

6"(measured

from glass)

Fig. 6

P43 Pellet Stove

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venting

requirements for terminating the venting

WARNING: Venting terminals must not be recessed

into a wall or siding.

I. The clearance to service regulator vent outlet must

be a minimum of 6 feet.¹

J. The clearance to a non-mechanical air supply inlet

to the building or the combustion air inlet to any other

appliance must be a minimum of 48”.¹

NOTE: Only approved pellet vent pipe, wall pass-

throughs, and ﬁre stops should be used when venting

through combustible materials.

NOTE: Always take into consideration the effects

of the prevailing wind direction or other wind currents

that may cause ﬂyash and/or smoke when placing the

termination of the vent.

in addition, the following must be observed:

A. The clearance above grade must be a minimum

of 18".¹

B. The clearance to a window or door that may be

opened must be a minimum of 48" to the side, 48" be-

low the window/door, and 1ꢀ" above the window/door.¹

(with outside air installed, 18” to the side or below)

C. A 1ꢀ" clearance to a permanently closed win-

dow is recommended to prevent condensation on

the window.

K. The clearance to a mechanical air supply inlet

must be a minimum of 10 feet.¹

(with outside air installed, 6 feet )

L. The clearance above a paved sidewalk or a paved

driveway located on public property must be a mini-

mum of 7 feet.^1,2

M. The clearance under a veranda, porch, deck or

balcony must be a minimum of 1ꢀ inches.^1,3

NOTE: The clearance to vegetation and other exte-

rior combustibles such as mulch is 36” as measured

from the center of the outlet or cap. This 36” radius

continues to grade or a minimum of 7 feet below the

outlet.

¹Certain Canadian and/or Local codes or regula-

tions may require different clearances.

D. The vertical clearance to a ventilated sofﬁt located

above the terminal within a horizontal distance of ꢀ

feet (60 cm) from the center-line of the terminal must

be a minimum of 18".

E. The clearance to an unventilated sofﬁt must be

a minimum of 1ꢀ".

²A vent shall not terminate directly above a side-

walk or paved driveway which is located between two

single family dwellings and serves both dwellings.

³Only permitted if veranda, porch, deck, or balcony

is fully open on a minimum of ꢀ sides beneath the

ﬂoor.

F. The clearance to an outside corner is 11" from

center of pipe.

G. The clearance to an inside corner is 1ꢀ".

H. A vent must not be installed within 3 feet (90 cm)

above a gas meter/regulator assembly when measured

from the horizontal center-line of the regulator.¹

nOte: where passage through a wall, or partition

of combustible construction is desired, the

installation shall conform to can/cSa-b365. (if

in canada)

= Vent terminal

P43 Pellet Stove

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venting

A combustion blower is used to extract the

iMPOrtant nOtice

Approved Pellet Vent Pipe Such As, Type "L"

Or "PL", Must Be Used.

combustion gases from the ﬁrebox. This causes a

negative pressure in the ﬁrebox and a positive pres-

sure in the venting system as shown in Fig. 7. The

longer the vent pipe and more elbows used in the

system, the greater the ﬂow resistance. Because

of these facts we recommend using as few elbows

as possible and 15 feet or less of vent pipe. The

maximum horizontal run should not exceed 48".

If more than 15 feet of pipe is needed, the interior

diameter should be increased from 3" to 4" because

a larger pipe causes less ﬂow resistance. be sure

to use approved pellet vent pipe wall and ceiling

pass-through ﬁttings to go through combustible

walls and ceilings. The use of a starting collar is

not always necessary. The ﬁrst piece of pipe should

be fastened securely with at least ꢀ fasteners to the

ﬂue collar of the stove. If a starting collar is used to

attach the venting system to the stove, the starting

collar must be sealed to the stove with high temp

silicone caulking.

vent Pipe

Pellet venting pipe (known as L or PL vent) is

constructed of two layers with air space between

the layers. This air space acts as an insulator and

reduces the outside surface temperature to allow

a clearance to combustibles of 1 to 3 inches. The

sections of pipe lock together to form an air tight

seal in most cases. However, in some cases a

perfect seal is not achieved. For this reason and

the fact that the P43 operates with a positive vent

pressure we specify that the joints also be sealed

with silicone. Aluminum tape can also be used for

any joint that is 1ft. or more from the outlet of the

stove.

= Positive Static Pressure

= Negative Static Pressure

Fig. 7

We cannot emphasize enough, the importance

of sealing every seam and joint in the venting system

which is inside the home. Even the smallest pin hole

can leak and when it does you will smell wood smoke

or a creosote smell in the room. If this occurs check

for leaks. Leaks are easiest to see during start-up.

Alternatively you can use a smoke pellet to leak test

the venting before lighting your ﬁrst ﬁre.

P43 Pellet Stove

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venting

Outside air

Here are four beneﬁts of outside air:

Outside air ﬂex pipe

goes here.

1. Having air introduced from outside the living

area boosts thermal efﬁciency. Because the make

up air is not being drawn in through leaky windows

or doors.

ꢀ. Outside air connection eliminates draft problems

that can occur in tight homes.

3. Outside air connection reduces smoke spillage in

the event of a power failure.

4. Outside air connection allows your vent termination

to be as close as 18" from windows or doors.

Flex pipe part#

1-00-08543 (25')

Outside air is optional, except in mobile homes

and where building codes require. The beneﬁt of

outside air is mainly noticed in small, very tight,

houses.

Inlet Cover part#

1-10-08542

To install outside air use ꢀ 3/8" I.D. non-combus-

tible ﬂex pipe. There is a break-away hole on the

rear panel of the P43 stove which must be removed

before connecting the ﬂex pipe. The pipe should be

run outside and terminate to the side or below the

vent pipe outlet so the ﬂue outlet is more than 12"

from the inlet cover. The maximum length run of this

pipe is 15 feet. If a longer run is needed the size

must be increased to 3". Inlet cover, part number

1-10-0854ꢀ should be used to keep birds, rodents,

etc.out of the pipe.

Direct Vent Wall Passthrough Kit

(part #1-00-677077)

You may choose to use the optional Direct Vent

Wall Passthrough Kit (part #1-00-677077) which

incorporates the venting passthrough and outside

air inlet into one component.

hrv

When installing in a house with a Heat Reclaim-

ing Ventilation System (HRV) be sure the system is

balanced and is not creating a negative pressure in

the house.

P43 Pellet Stove

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venting

#1 Preferred method

This method provides excellent venting for

normal operation and allows the stove to be in-

stalled closest to the wall. Two inches from the wall

is safe; however, four inches allows better access

to remove the rear panel. The vertical portion of the

vent should be three to ﬁve feet high. This vertical

section will help provide natural draft in the event of

a power failure. note: do not place joints within

wall pass-throughs.

3 ft.

to combustibles

Fig. 8

3 ft.

to combustibles

#2 Preferred method

This method also provides excellent venting

for normal operation but requires the stove to be

installed farther from the wall. The vertical portion

of the vent should be three to ﬁve feet high and at

least three inches from a combustible wall. This

vertical section will provide natural draft in the event

of a power failure.

If the stove is installed below grade be sure the

vent termination is at least 18" above grade. The

outlet must also be 1 foot from the house/building.

Note: Do not place joints within wall pass-

throughs.

3 ft.

to combustibles

cautiOn

Keep combustible materials (such as grass,

leaves, etc.) at least 3 feet away from the ﬂue

outlet on the outside of the building.

12" min. wall to outlet

3 ft.

Fig. 9

to combustibles

36" min

clearance to any

combustible

material

P43 Pellet Stove

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venting

#4 installing into an existing

chimney

This method provides excellent venting for

normal operation. This method also provides

natural draft in the event of a power failure. If the

chimney condition is questionable* you may want

to install a liner as in method #7.

In some places in the US and Canada it is

required that the vent pipe extend all the way to the

top of the chimney.

*The chimney should be inspected and cleaned

before installing your stove. If you discover that the

chimney does not have a clay tile liner or has cracks

or ﬂaking of the tile liner you will need to install a

stainless steel liner within the chimney. In most cases

the inside diameter of this liner should be 4". Either

ﬂexible or rigid liner may be used for this purpose.

Refer to Method 6 & 7.

Be sure to design the venting so that it can be easily

cleaned.

#5 installing into an existing

Fig. 10

ﬁreplace chimney

This method provides excellent venting for

normal operation. This method also provides natural

draft in the event of a power failure. If the chimney

condition is questionable* you may want to install a

liner as in method #6.

In some places in the US and Canada it is

required that the vent pipe extend all the way to the

top of the chimney.

*The chimney should be inspected and cleaned

before installing your stove. If you discover that the

chimney does not have a clay tile liner or has cracks

or ﬂaking of the tile liner you will need to install a

stainless steel liner within the chimney. In most cases

the inside diameter of this liner should be 4". Either

ﬂexible or rigid liner may be used for this purpose.

Refer to Method 6 & 7.

The chimney should be sealed at the damper

using a steel plate, or with insulation at the ﬁrst ﬂue

tile. In both cases the connector pipe should extend

through the smoke chamber to the base or into the

ﬁrst ﬂue tile.

Be sure to design the venting so that it can be

easily cleaned.

Fig. 11

P43 Pellet Stove

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venting

#6 Installing into an existing ﬁreplace

chimney

This method provides excellent venting for

normal operation. This method also provides natural

draft in the event of a power failure.

In some places in the US and Canada it is re-

quired that the vent pipe extend all the way to the top

of the chimney. The pipe or liner inside the chimney

should be 4"diameter.

In this method a cap should also be installed

on the chimney to keep out rain. Be sure to use ap-

proved pellet vent pipe ﬁttings. Seal pipe joints with

silicone or aluminum tape in addition to the sealing

system used by the manufacturer. Pipe size should

be increased to 4" using this method.

Fig. 12

#7 installing into an existing

chimney

This method provides excellent venting for

normal operation. This method also provides natural

draft in the event of a power failure.

In some places in the US and Canada it is re-

quired that the vent pipe extend all the way to the top

of the chimney. The pipe or liner inside the chimney

should be 4"diameter.

In this method a cap should also be installed

on the chimney to keep out rain.

1ꢀ

Fig. 13

P43 Pellet Stove

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venting

Storm collar

Flashing

1ꢀ" min.

3" min.

PL vent manufacturer's

firestop spacer and

support

Minimum flue vent

conﬁguration

It is recommended that outside

air be installed with this venting

conﬁguration to reduce smoke

and creosote smell in the room

in the event of power failure.

No insulation or

other combustible

m a t e r i a l s a r e

allowed within

3" of the pellet

vent pipe. Unless

specified by the

pipe manufacturer

(See Page 6 for

corner installation

clearances)

3" min.

Fig. 14

#8 installing through the ceiling

Through the ceiling vent, follow PLvent

manufacturers recommendations when using wall

and ceiling pass through. note: do not place joints

within wall pass-throughs.

Fig. 15

12" min. wall to outlet

36" min clearance to any

combustible material

Fig. 16

P43 Pellet Stove

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P43 autOMatic ignitiOn eSP cOntrOl

Feed adjuster

Sets the maximum

feed rate

Power Light

Indicates power to the

control.

Test

Runs all motors at full

speed for one minute to

check operation. After

two minutes the stove

will go to minimum burn

and the blowers will

alternate from high to

low every minute to

remind you that you are

still in "Test Mode".

Status Light

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 listed below.

Igniter switch

Set to appropriate

Start-Up mode.

Indicates power to

distribution blower.

Distribution Blower

speed adjustment

range.

Indicates power to

combustion blower

L = low

H = high

Indicates power to the

feed motor.

V a r i a b l e s p e e d

anywhere between L

and H; although as the

stove temp. goes up ,

so does the low end of

the scale.

Indicates power to the

igniter

Mode Selector

Temp dial

Dealer Diagnostic Port

For dealer maintenance

only. RequiresspecialDDM

monitorsuppliedtoHarman

Dealers exclusively.

Allows you to choose between

RoomTempMode,StoveTemp

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.

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.

Status light error messages:

1 blink: Indicates control board self diagnostic fail-

ure. This requires a manual reset*.

3 blinks: Indicates ESP (Exhaust Sensing Probe)

failure. This requires a manual reset*.

4 blinks: Can occur only in Room Temp Mode and

indicates Room Sensing Probe failed or not installed.

If a Room Sensing Probe is then installed, the status

light will automatically reset.

5 blinks (in igniter auto. Mode Only): Indicates

that the unit has failed to light within the 36 minute

start cycle. To reset - Turn Mode Selector to "OFF",

then turn to either mode again.

6 blinks : Indicates that the control has calculated

poor or incomplete combustion occurring for more

than 50 minutes.

A six blink status may be set if the stove is allowed

to run out of pellets. To reset, turn mode selector to

"OFF" then back on to the desired mode. If the unit

was not out of pellets, see Troubleshooting section,

Page ꢀ6, for more details.

* Manual reset- disconnect power cord for a few

seconds and reconnect. If error still occurs call your

Dealer.

P43 Pellet Stove

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P43 AUTOMATIC IGNITION/OPERATION

The P43 is a fully automatic stove that features two

room temperature Mode

operating modes; Stove temperature Mode and room

temperature Mode. In Stove Temperature Mode, you

select a burn rate and the stove will remain at the same

burn rate regardless of the room temperature.

In the Room Temperature Mode the stove constantly

monitors the temperature in the room and adjusts the

size of the ﬁre and the heat output of the stove so that the

room is kept at a constant temperature. Room mode, in

theAUTO position, has the added advantage of turning

the stove off if no heat is required and turning the stove

on again when the room temperature drops below your

desired room temperature.

room temperature Mode

Most consumers use the stove in the RoomTemperature

Mode because it is the easiest and most efﬁcient method

of keeping the room at a given temperature. In the

Room Temperature Mode, the Room Sensing Probe

constantly monitors room temperature. As the weather

changes outside and your home needs varying amounts

of heat to be at a desired temperature, the stove will

automatically increase ﬁre size and heat output so

that a constant even temperature is maintained. If the

weather warms up and no heat is required, the stove

will gradually shut down. When the house cools down,

the stove will automatically bring the room temperature

to the precise temperature you desire.

In the Room Temperature Mode you can select either

auto or Manual modes for the igniter, using the igniter

toggle switch. When the toggle switch is in the Auto

position, the igniter, located inside the burn pot, is ready

to automatically light the ﬁre when required. When the

toggle switch set to the Manual position the stove can

be lit manually with either a gel or a wax type ﬁre starter.

(see lighting instructions on page 19.) With the igniter

toggle switch set in the Manual position the stove will

automatically adjust heat output, but the stove will not

automatically shut down if no heat is required. Instead it

will go to its lowest setting and remain there. The Manual

position on the igniter toggle switch lets you light the

stove manually, should the igniter fail for any reason.

Secondly if you are using the Harman battery back up

system, the Manual setting will prevent the stove from

turning off and on during a power failure, which would

drain the back up battery, and possibly cause damage

to the back-up or the stove.

room temperature Mode: This setting, see above,

will produce a room temperature of 70 degrees with the

distribution blower at medium speed.

circuit board dipswitches:

On the face of the circuit board,

there is a series of 8 switches.

These "ON-OFF" switches

are used to set the timings

and temperatures for the

different models of stove. For

a P43, the switches numbered

5 and 8 should be on, with

the rest of them off. never

adjuSt theSe SwitcheS

YOurSelF, aS SeriOuS

iSSueS cOuld develOP.

Also know that if there is a need

to replace an ESP probe,a

In the Room Temperature Mode, the distribution blower

speed can be increased or decreased by adjusting the

Room Temp/Off/Stove Temp dial between L and H. As

output of the stove increases, the speed of the blower

will increase automatically to insure that more heat is

transferred out into the room. The distribution blower

will shut off as the room reaches the set temperature,

this will prevent overheating of the room.

switch change may also be

needed. It is strongly recommended to have a trained service

representative make any repairs to the appliance.

P43 Pellet Stove

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P43 AUTOMATIC IGNITION/OPERATION

Stove temperature Mode

Shut down Procedure

In the Stove Temperature Mode and with the igniter

toggle switch in the Auto position, the stove will light

automatically and can be adjusted to the desired setting

using the same temperature control dial as is used in

the Room Temperature Mode. The heat output and fuel

consumption will remain constant regardless of room

temperature. The settings from 1 to 7 on the inner ring

of the temperature dial provide for relative heat output

settings with 1 being low and 7 being the maximum.

The best way to shut down the stove is to simply let it

run out of pellets. The stove will shut down automatically.

Alternatively, you can turn the Mode Selector to “off”.

This will cause the ﬁre to gradually die down and go out.

The ﬁre will not go out immediately and may take more

than an hour to fully shut down.

If the stove is left to run out of fuel, you may get a 6

blink status light. If this happens simply reset the control

board by turning the mode selector to OFF and back

In Stove Temperature Mode, the stove will not

automatically shut off unless the stove runs out of fuel

or is turned off.

ON.

Never pull the plug to shut down the stove. This will stop

the combustion blower and smoke will escape through

window and door gaskets.

When the igniter toggle switch is set to manual in this

mode, the distribution blower will not turn on with a

temperature dial setting from 1 to 5. The advantage of

this mode is to allow the operator to have a large viewing

ﬁre without blowing extra heat into the room.

Stove temperature Mode

During manual operation, with the temperature dial set

at #5 or less, the distribution fan will not operate. A #5

on the temperature dial and a #5 on the feed adjuster is

approximately 80% output. It is not necessary to operate

the distribution blower below this point. Therefore, the

control allows a higher burn rate ( a larger viewing ﬁre)

without an excess of hot air blowing into the room.

An example of when to use the Manual Stove Tempera-

ture Mode is if you want to watch a large ﬁre and the

room is already up to temperature. The Stove Tempera-

ture Mode allows you to have a larger ﬁre and a lower

sound level, without the distribution blower.

The setting above will produce continuous medium heat

output with the distribution blower at low speed.

nOte: during the use of this mode, if you keep

increasing the temperature dial setting to increase

the ﬁre size, the distribution blower will automati-

cally come on when the eSP temperature reaches

350^oF, or 81% output.

Feed adjuster Knob

For most premium grade pellet fuels the Feed Adjuster

Knob should be set at 4. If higher ash fuels are used

the setting should be increased to 5 or 6. Also higher

settings are required if you would like to get the

maximum heat output from the stove. At the maximum

burn rate (with the temperature dial on 7/90° and the

feed adjuster at 6) there should be 1" or more of ash on

the front of the burn pot. If there is less than 1" of ash,

turn the feed adjuster knob down to a lower setting.

The setting above will produce continuous maximum heat

output with the distribution blower at full speed.

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P43 autOMatic Start uP

Starting First Fire

igniter Switch to"autO"(up position)

Make sure the unit is plugged into a 1ꢀ0 VAC, 60

HZ electrical source. The power light should be the

only light lit.

SeeHint #7.

Fig. 17

Flame Guide

nOtice: be sure there is no unburned fuel

or other combustibles in the ash pan prior

to lighting.

1. turn Mode Selector to "OFF".

ꢀ. Fill hopper with pellets.¹

3. clean burn pot with scraper, if necessary.⁵

Fig. 18

4. if starting after an empty hopper, turn Feed

adjuster to "teSt" (for one 60 second cycle).^ꢀ

This will purge pellets into the auger tube and also

allow you to check the motors for operation.

nOte: the auger motor will not operate with

the view door or ash pan door open.³

helpful hints

1. Fines are small pieces of broken pellets (sawdust). Fines do not

ﬂow easily and often build up on the hopper funnel bottom angles.

You can push these ﬁnes into the feeder opening and then ﬁll the

hopper with pellets. As the system works, they will be burned. Or

you can clean them out before ﬁlling the hopper.

2. The "TEST" cycle will operate the feeder motor for exactly one

minute. Turning to "TEST" again and again may purge too much

fuel into the burn pot causing excessive smoke on start-up.

3. The ﬁrebox low pressure switch will not allow the auger motor

or the igniter element to operate if the view door or the ash pan

door are open.

5. turn Feed adjuster to #4.⁴

6. Flip the igniter Switch up into the "AUTO"

position.

4. Adjust Feed Rate. If this is your ﬁrst ﬁre or you are trying different

pellets, set the feed adjuster to #4, Fig. 17. This is a conservative

number and will probably need to be increased. After you know a

feed rate setting that works well, use that setting. Remember, if your

feed rate is too high you may waste fuel.

7. turn the temperature dial to the desired

temperature.

8. turn Mode Selector to Room Temperature or

Stove Temperature.

5. This is usually a weekly maintenance procedure. Cleaning the

burn pot with the scraper with a small amount of new fuel in the

bottom is not a problem. First, scrape the ashes off the front of the

burn pot into the ash pan. Then, scrape the top surface of the burn

pot downward into the base of the burn pot. When the stove is ignited

these scrapings will be pushed out by the feeder and burned.

6. The ash pan can hold the ashes from approximately 1 ton of

premium fuel. This means the ashes will only need to be emptied

a few times a year.

7. Setting the feed adjuster # for maximum burn: With the unit

burning in "AUTO", turn to "Stove Mode" and put the fan on "H".

Set the Temperature Dial to #7. Allow the unit to burn for about 30

minutes and check ash on front of burn pot. Fig. 18. If the ash line

is larger than 1", turn the feed adjuster from #4 to #5. Allow another

30 minutes of burn time and check again. If , at #6 setting, a 1" or

less ash bed is not obtainable, it is not a problem. The 1" ash bed

is only a maximum burn rate and at most normal settings the ash

bed will be larger.

9. Fill hopper with pellets and remove ashes as

required.⁶

warning

"never uSe gaSOline, gaSOline-tYPe lantern

Fuel, KerOSene, charcOal lighter Fluid, Or

SiMilar liQuidS tO Start Or "FreShen uP " a

Fire in thiS heater. KeeP all Such liQuidS

well awaY FrOM the heater while in uSe".

warning

OnlY uSe wOOd Pellet Fuel. dO nOt burn

garbage in StOve.

P43 Pellet Stove

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P43 Manual ignitiOn/OPeratiOn

The P43 Pellet Stove is capable of manual operation. This also allows the operator

to manually control operation during an emergency (i.e. igniter failure, when using a

50ꢀH battery backup, as opposed to the 51ꢀH, or when using certain generators.)

The unit can be switched between "AUTO" and "MANUAL" at any time during op-

eration.

nOte: when starting the unit in the "autO"

mode and switching to "MANUAL", the ﬁre must be

Room Temperature Mode: This

large enough to start the distribution blower. the

starting of the blower is a signal that the start cycle

is completed and the ﬁre will not go out.

setting, see below, will produce a

room temperature of 70 degrees

with the distribution blower at

medium speed.

igniter Switch to "Manual"

room temperature Mode

The ﬁre will have to be lit with starting gel and a

match, or started automatically, see "Automatic Opera-

tion" on Page 15. Turn to "Manual" position when the

ﬁre is established.

The difference between "AUTO" Room Temperature

Mode and "Manual" Room Temperature Mode is that

the ﬁre will not go out as the room temperature goes

above the control board setting. The unit can only go to

low burn and will remain there until it runs out of fuel or

until more heat is needed and the feed rate increases.

Feed rate adjustments and dial settings are the same

as "AUTO" settings. The blower will shut off com-

pletely if the temperature on the ESP is too low.

Manual Stove temperature Mode

igniter Switch to "Manual"

Stove temperature Mode

The advantage of this mode is to allow the operator

to have a large viewing ﬁre without blowing extra heat

into the room.

During operation, with the temperature dial set at

#5 or less, the distribution fan will not operate. A #5 on

the temperature dial and a #5 on the feed adjuster is

approximately 80% output. It is not necessary to oper-

ate the distribution blower below this point. This control

setting allows a higher burn rate (a larger viewing ﬁre)

without an excess of hot air blowing into the room.

An example of when to use the Manual Stove Tem-

perature Mode is if you want to watch a large ﬁre and

the room is already up to temperature. The Stove

Temperature Mode allows you to have a larger ﬁre and

a lower sound level, without the distribution blower.

nOte: during the use of this mode, if you keep

increasing the temperature dial setting to increase

the ﬁre size, the distribution blower will automati-

cally come on when the eSP temperature reaches

350^oF, or 81% output.

This setting will produce a large viewing ﬁre

without a distribution blower operating.

P43 Pellet Stove

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P43 Manual Start uP

Starting First Fire

igniter Switch to"Manual"

(down position)

Fig. 20

Make sure the unit is plugged into a 1ꢀ0

VAC, 60 HZ electrical source. The power light

should be the only light lit.

Fig. 19

See Hint #7.

nOtice: be sure there is no unburned fuel

or other combustibles in the ash pan prior

to lighting.

1. turn Feed adjuSter to desired feed rate.

No. 4 is good for most pellets.⁴

2. turn the MOde SelectOr to “OFF” and

then to the desired mode. This will reset con-

trol and start the combustion motor.

Fig. 21

helpful hints

1. Fines are small pieces of broken pellets (sawdust). Fines do not

ﬂow easily and often build up on the hopper funnel bottom angles.

You can push these ﬁnes into the feeder opening and then ﬁll the

hopper with pellets. As the system works, they will be burned. Or

you can clean them out before ﬁlling the hopper.As the system

works, they will be burned.

2. The "TEST" cycle will operate the feeder motor for exactly one

minute. Turning to "TEST" again and again may purge too much

fuel into the burn pot causing excessive smoke on start-up.

3. The ﬁrebox low pressure switch will not allow the auger motor

or the igniter element to operate if the view door or the ash pan

door are open.

4. Adjust Feed Rate. If this is your ﬁrst ﬁre or you are trying different

pellets, set the feed adjuster to #4, Fig. 19. This is a conservative